drivers/net/ethernet/intel/i40e/i40e_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 /* ethtool support for i40e */
   5
   6 #include "i40e.h"
   7 #include "i40e_diag.h"
   8 #include "i40e_txrx_common.h"
   9
  10 /* ethtool statistics helpers */
  11
  12 /**
  13  * struct i40e_stats - definition for an ethtool statistic
  14  * @stat_string: statistic name to display in ethtool -S output
  15  * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
  16  * @stat_offset: offsetof() the stat from a base pointer
  17  *
  18  * This structure defines a statistic to be added to the ethtool stats buffer.
  19  * It defines a statistic as offset from a common base pointer. Stats should
  20  * be defined in constant arrays using the I40E_STAT macro, with every element
  21  * of the array using the same _type for calculating the sizeof_stat and
  22  * stat_offset.
  23  *
  24  * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
  25  * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
  26  * the i40e_add_ethtool_stat() helper function.
  27  *
  28  * The @stat_string is interpreted as a format string, allowing formatted
  29  * values to be inserted while looping over multiple structures for a given
  30  * statistics array. Thus, every statistic string in an array should have the
  31  * same type and number of format specifiers, to be formatted by variadic
  32  * arguments to the i40e_add_stat_string() helper function.
  33  **/
  34 struct i40e_stats {
  35         char stat_string[ETH_GSTRING_LEN];
  36         int sizeof_stat;
  37         int stat_offset;
  38 };
  39
  40 /* Helper macro to define an i40e_stat structure with proper size and type.
  41  * Use this when defining constant statistics arrays. Note that @_type expects
  42  * only a type name and is used multiple times.
  43  */
  44 #define I40E_STAT(_type, _name, _stat) { \
  45         .stat_string = _name, \
  46         .sizeof_stat = sizeof_field(_type, _stat), \
  47         .stat_offset = offsetof(_type, _stat) \
  48 }
  49
  50 /* Helper macro for defining some statistics directly copied from the netdev
  51  * stats structure.
  52  */
  53 #define I40E_NETDEV_STAT(_net_stat) \
  54         I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
  55
  56 /* Helper macro for defining some statistics related to queues */
  57 #define I40E_QUEUE_STAT(_name, _stat) \
  58         I40E_STAT(struct i40e_ring, _name, _stat)
  59
  60 /* Stats associated with a Tx or Rx ring */
  61 static const struct i40e_stats i40e_gstrings_queue_stats[] = {
  62         I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
  63         I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
  64 };
  65
  66 /**
  67  * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
  68  * @data: location to store the stat value
  69  * @pointer: basis for where to copy from
  70  * @stat: the stat definition
  71  *
  72  * Copies the stat data defined by the pointer and stat structure pair into
  73  * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
  74  * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
  75  */
  76 static void
  77 i40e_add_one_ethtool_stat(u64 *data, void *pointer,
  78                           const struct i40e_stats *stat)
  79 {
  80         char *p;
  81
  82         if (!pointer) {
  83                 /* ensure that the ethtool data buffer is zero'd for any stats
  84                  * which don't have a valid pointer.
  85                  */
  86                 *data = 0;
  87                 return;
  88         }
  89
  90         p = (char *)pointer + stat->stat_offset;
  91         switch (stat->sizeof_stat) {
  92         case sizeof(u64):
  93                 *data = *((u64 *)p);
  94                 break;
  95         case sizeof(u32):
  96                 *data = *((u32 *)p);
  97                 break;
  98         case sizeof(u16):
  99                 *data = *((u16 *)p);
 100                 break;
 101         case sizeof(u8):
 102                 *data = *((u8 *)p);
 103                 break;
 104         default:
 105                 WARN_ONCE(1, "unexpected stat size for %s",
 106                           stat->stat_string);
 107                 *data = 0;
 108         }
 109 }
 110
 111 /**
 112  * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
 113  * @data: ethtool stats buffer
 114  * @pointer: location to copy stats from
 115  * @stats: array of stats to copy
 116  * @size: the size of the stats definition
 117  *
 118  * Copy the stats defined by the stats array using the pointer as a base into
 119  * the data buffer supplied by ethtool. Updates the data pointer to point to
 120  * the next empty location for successive calls to __i40e_add_ethtool_stats.
 121  * If pointer is null, set the data values to zero and update the pointer to
 122  * skip these stats.
 123  **/
 124 static void
 125 __i40e_add_ethtool_stats(u64 **data, void *pointer,
 126                          const struct i40e_stats stats[],
 127                          const unsigned int size)
 128 {
 129         unsigned int i;
 130
 131         for (i = 0; i < size; i++)
 132                 i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
 133 }
 134
 135 /**
 136  * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
 137  * @data: ethtool stats buffer
 138  * @pointer: location where stats are stored
 139  * @stats: static const array of stat definitions
 140  *
 141  * Macro to ease the use of __i40e_add_ethtool_stats by taking a static
 142  * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
 143  * ensuring that we pass the size associated with the given stats array.
 144  *
 145  * The parameter @stats is evaluated twice, so parameters with side effects
 146  * should be avoided.
 147  **/
 148 #define i40e_add_ethtool_stats(data, pointer, stats) \
 149         __i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
 150
 151 /**
 152  * i40e_add_queue_stats - copy queue statistics into supplied buffer
 153  * @data: ethtool stats buffer
 154  * @ring: the ring to copy
 155  *
 156  * Queue statistics must be copied while protected by
 157  * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
 158  * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
 159  * ring pointer is null, zero out the queue stat values and update the data
 160  * pointer. Otherwise safely copy the stats from the ring into the supplied
 161  * buffer and update the data pointer when finished.
 162  *
 163  * This function expects to be called while under rcu_read_lock().
 164  **/
 165 static void
 166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
 167 {
 168         const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
 169         const struct i40e_stats *stats = i40e_gstrings_queue_stats;
 170         unsigned int start;
 171         unsigned int i;
 172
 173         /* To avoid invalid statistics values, ensure that we keep retrying
 174          * the copy until we get a consistent value according to
 175          * u64_stats_fetch_retry_irq. But first, make sure our ring is
 176          * non-null before attempting to access its syncp.
 177          */
 178         do {
 179                 start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
 180                 for (i = 0; i < size; i++) {
 181                         i40e_add_one_ethtool_stat(&(*data)[i], ring,
 182                                                   &stats[i]);
 183                 }
 184         } while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
 185
 186         /* Once we successfully copy the stats in, update the data pointer */
 187         *data += size;
 188 }
 189
 190 /**
 191  * __i40e_add_stat_strings - copy stat strings into ethtool buffer
 192  * @p: ethtool supplied buffer
 193  * @stats: stat definitions array
 194  * @size: size of the stats array
 195  *
 196  * Format and copy the strings described by stats into the buffer pointed at
 197  * by p.
 198  **/
 199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
 200                                     const unsigned int size, ...)
 201 {
 202         unsigned int i;
 203
 204         for (i = 0; i < size; i++) {
 205                 va_list args;
 206
 207                 va_start(args, size);
 208                 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
 209                 *p += ETH_GSTRING_LEN;
 210                 va_end(args);
 211         }
 212 }
 213
 214 /**
 215  * i40e_add_stat_strings - copy stat strings into ethtool buffer
 216  * @p: ethtool supplied buffer
 217  * @stats: stat definitions array
 218  *
 219  * Format and copy the strings described by the const static stats value into
 220  * the buffer pointed at by p.
 221  *
 222  * The parameter @stats is evaluated twice, so parameters with side effects
 223  * should be avoided. Additionally, stats must be an array such that
 224  * ARRAY_SIZE can be called on it.
 225  **/
 226 #define i40e_add_stat_strings(p, stats, ...) \
 227         __i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
 228
 229 #define I40E_PF_STAT(_name, _stat) \
 230         I40E_STAT(struct i40e_pf, _name, _stat)
 231 #define I40E_VSI_STAT(_name, _stat) \
 232         I40E_STAT(struct i40e_vsi, _name, _stat)
 233 #define I40E_VEB_STAT(_name, _stat) \
 234         I40E_STAT(struct i40e_veb, _name, _stat)
 235 #define I40E_VEB_TC_STAT(_name, _stat) \
 236         I40E_STAT(struct i40e_cp_veb_tc_stats, _name, _stat)
 237 #define I40E_PFC_STAT(_name, _stat) \
 238         I40E_STAT(struct i40e_pfc_stats, _name, _stat)
 239 #define I40E_QUEUE_STAT(_name, _stat) \
 240         I40E_STAT(struct i40e_ring, _name, _stat)
 241
 242 static const struct i40e_stats i40e_gstrings_net_stats[] = {
 243         I40E_NETDEV_STAT(rx_packets),
 244         I40E_NETDEV_STAT(tx_packets),
 245         I40E_NETDEV_STAT(rx_bytes),
 246         I40E_NETDEV_STAT(tx_bytes),
 247         I40E_NETDEV_STAT(rx_errors),
 248         I40E_NETDEV_STAT(tx_errors),
 249         I40E_NETDEV_STAT(rx_dropped),
 250         I40E_NETDEV_STAT(tx_dropped),
 251         I40E_NETDEV_STAT(collisions),
 252         I40E_NETDEV_STAT(rx_length_errors),
 253         I40E_NETDEV_STAT(rx_crc_errors),
 254 };
 255
 256 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
 257         I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
 258         I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
 259         I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
 260         I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
 261         I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
 262         I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
 263         I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
 264         I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
 265         I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
 266         I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
 267         I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
 268         I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
 269 };
 270
 271 struct i40e_cp_veb_tc_stats {
 272         u64 tc_rx_packets;
 273         u64 tc_rx_bytes;
 274         u64 tc_tx_packets;
 275         u64 tc_tx_bytes;
 276 };
 277
 278 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
 279         I40E_VEB_TC_STAT("veb.tc_%u_tx_packets", tc_tx_packets),
 280         I40E_VEB_TC_STAT("veb.tc_%u_tx_bytes", tc_tx_bytes),
 281         I40E_VEB_TC_STAT("veb.tc_%u_rx_packets", tc_rx_packets),
 282         I40E_VEB_TC_STAT("veb.tc_%u_rx_bytes", tc_rx_bytes),
 283 };
 284
 285 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
 286         I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
 287         I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
 288         I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
 289         I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
 290         I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
 291         I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
 292         I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
 293         I40E_VSI_STAT("tx_linearize", tx_linearize),
 294         I40E_VSI_STAT("tx_force_wb", tx_force_wb),
 295         I40E_VSI_STAT("tx_busy", tx_busy),
 296         I40E_VSI_STAT("tx_stopped", tx_stopped),
 297         I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
 298         I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
 299         I40E_VSI_STAT("rx_cache_reuse", rx_page_reuse),
 300         I40E_VSI_STAT("rx_cache_alloc", rx_page_alloc),
 301         I40E_VSI_STAT("rx_cache_waive", rx_page_waive),
 302         I40E_VSI_STAT("rx_cache_busy", rx_page_busy),
 303         I40E_VSI_STAT("tx_restart", tx_restart),
 304 };
 305
 306 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
 307  * but they are separate.  This device supports Virtualization, and
 308  * as such might have several netdevs supporting VMDq and FCoE going
 309  * through a single port.  The NETDEV_STATs are for individual netdevs
 310  * seen at the top of the stack, and the PF_STATs are for the physical
 311  * function at the bottom of the stack hosting those netdevs.
 312  *
 313  * The PF_STATs are appended to the netdev stats only when ethtool -S
 314  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
 315  */
 316 static const struct i40e_stats i40e_gstrings_stats[] = {
 317         I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
 318         I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
 319         I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
 320         I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
 321         I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
 322         I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
 323         I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
 324         I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
 325         I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
 326         I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
 327         I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
 328         I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
 329         I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
 330         I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
 331         I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
 332         I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
 333         I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
 334         I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
 335         I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
 336         I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
 337         I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
 338         I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
 339         I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
 340         I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
 341         I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
 342         I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
 343         I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
 344         I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
 345         I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
 346         I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
 347         I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
 348         I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
 349         I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
 350         I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
 351         I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
 352         I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
 353         I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
 354         I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
 355         I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
 356         I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
 357         I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
 358         I40E_PF_STAT("port.arq_overflows", arq_overflows),
 359         I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
 360         I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 361         I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
 362         I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
 363         I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
 364         I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
 365         I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
 366         I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
 367         I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
 368
 369         /* LPI stats */
 370         I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
 371         I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
 372         I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
 373         I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
 374 };
 375
 376 struct i40e_pfc_stats {
 377         u64 priority_xon_rx;
 378         u64 priority_xoff_rx;
 379         u64 priority_xon_tx;
 380         u64 priority_xoff_tx;
 381         u64 priority_xon_2_xoff;
 382 };
 383
 384 static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
 385         I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
 386         I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
 387         I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
 388         I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
 389         I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
 390 };
 391
 392 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 393
 394 #define I40E_MISC_STATS_LEN     ARRAY_SIZE(i40e_gstrings_misc_stats)
 395
 396 #define I40E_VSI_STATS_LEN      (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
 397
 398 #define I40E_PFC_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
 399                                  I40E_MAX_USER_PRIORITY)
 400
 401 #define I40E_VEB_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_veb_stats) + \
 402                                  (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
 403                                   I40E_MAX_TRAFFIC_CLASS))
 404
 405 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 406
 407 #define I40E_PF_STATS_LEN       (I40E_GLOBAL_STATS_LEN + \
 408                                  I40E_PFC_STATS_LEN + \
 409                                  I40E_VEB_STATS_LEN + \
 410                                  I40E_VSI_STATS_LEN)
 411
 412 /* Length of stats for a single queue */
 413 #define I40E_QUEUE_STATS_LEN    ARRAY_SIZE(i40e_gstrings_queue_stats)
 414
 415 enum i40e_ethtool_test_id {
 416         I40E_ETH_TEST_REG = 0,
 417         I40E_ETH_TEST_EEPROM,
 418         I40E_ETH_TEST_INTR,
 419         I40E_ETH_TEST_LINK,
 420 };
 421
 422 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 423         "Register test  (offline)",
 424         "Eeprom test    (offline)",
 425         "Interrupt test (offline)",
 426         "Link test   (on/offline)"
 427 };
 428
 429 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 430
 431 struct i40e_priv_flags {
 432         char flag_string[ETH_GSTRING_LEN];
 433         u64 flag;
 434         bool read_only;
 435 };
 436
 437 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
 438         .flag_string = _name, \
 439         .flag = _flag, \
 440         .read_only = _read_only, \
 441 }
 442
 443 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
 444         /* NOTE: MFP setting cannot be changed */
 445         I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
 446         I40E_PRIV_FLAG("total-port-shutdown",
 447                        I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED, 1),
 448         I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
 449         I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
 450         I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
 451         I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
 452         I40E_PRIV_FLAG("link-down-on-close",
 453                        I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
 454         I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
 455         I40E_PRIV_FLAG("disable-source-pruning",
 456                        I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
 457         I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
 458         I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
 459         I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
 460 };
 461
 462 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
 463
 464 /* Private flags with a global effect, restricted to PF 0 */
 465 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
 466         I40E_PRIV_FLAG("vf-true-promisc-support",
 467                        I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
 468 };
 469
 470 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
 471
 472 /**
 473  * i40e_partition_setting_complaint - generic complaint for MFP restriction
 474  * @pf: the PF struct
 475  **/
 476 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
 477 {
 478         dev_info(&pf->pdev->dev,
 479                  "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
 480 }
 481
 482 /**
 483  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
 484  * @pf: PF struct with phy_types
 485  * @ks: ethtool link ksettings struct to fill out
 486  *
 487  **/
 488 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
 489                                      struct ethtool_link_ksettings *ks)
 490 {
 491         struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
 492         u64 phy_types = pf->hw.phy.phy_types;
 493
 494         ethtool_link_ksettings_zero_link_mode(ks, supported);
 495         ethtool_link_ksettings_zero_link_mode(ks, advertising);
 496
 497         if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
 498                 ethtool_link_ksettings_add_link_mode(ks, supported,
 499                                                      1000baseT_Full);
 500                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 501                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 502                                                              1000baseT_Full);
 503                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 504                         ethtool_link_ksettings_add_link_mode(ks, supported,
 505                                                              100baseT_Full);
 506                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 507                                                              100baseT_Full);
 508                 }
 509         }
 510         if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
 511             phy_types & I40E_CAP_PHY_TYPE_XFI ||
 512             phy_types & I40E_CAP_PHY_TYPE_SFI ||
 513             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
 514             phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
 515                 ethtool_link_ksettings_add_link_mode(ks, supported,
 516                                                      10000baseT_Full);
 517                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 518                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 519                                                              10000baseT_Full);
 520         }
 521         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
 522                 ethtool_link_ksettings_add_link_mode(ks, supported,
 523                                                      10000baseT_Full);
 524                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 525                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 526                                                              10000baseT_Full);
 527         }
 528         if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
 529                 ethtool_link_ksettings_add_link_mode(ks, supported,
 530                                                      2500baseT_Full);
 531                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
 532                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 533                                                              2500baseT_Full);
 534         }
 535         if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
 536                 ethtool_link_ksettings_add_link_mode(ks, supported,
 537                                                      5000baseT_Full);
 538                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
 539                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 540                                                              5000baseT_Full);
 541         }
 542         if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
 543             phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
 544             phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
 545                 ethtool_link_ksettings_add_link_mode(ks, supported,
 546                                                      40000baseCR4_Full);
 547         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 548             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
 549                 ethtool_link_ksettings_add_link_mode(ks, supported,
 550                                                      40000baseCR4_Full);
 551                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
 552                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 553                                                              40000baseCR4_Full);
 554         }
 555         if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 556                 ethtool_link_ksettings_add_link_mode(ks, supported,
 557                                                      100baseT_Full);
 558                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 559                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 560                                                              100baseT_Full);
 561         }
 562         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
 563                 ethtool_link_ksettings_add_link_mode(ks, supported,
 564                                                      1000baseT_Full);
 565                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 566                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 567                                                              1000baseT_Full);
 568         }
 569         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
 570                 ethtool_link_ksettings_add_link_mode(ks, supported,
 571                                                      40000baseSR4_Full);
 572                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 573                                                      40000baseSR4_Full);
 574         }
 575         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
 576                 ethtool_link_ksettings_add_link_mode(ks, supported,
 577                                                      40000baseLR4_Full);
 578                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 579                                                      40000baseLR4_Full);
 580         }
 581         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
 582                 ethtool_link_ksettings_add_link_mode(ks, supported,
 583                                                      40000baseKR4_Full);
 584                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 585                                                      40000baseKR4_Full);
 586         }
 587         if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
 588                 ethtool_link_ksettings_add_link_mode(ks, supported,
 589                                                      20000baseKR2_Full);
 590                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
 591                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 592                                                              20000baseKR2_Full);
 593         }
 594         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
 595                 ethtool_link_ksettings_add_link_mode(ks, supported,
 596                                                      10000baseKX4_Full);
 597                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 598                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 599                                                              10000baseKX4_Full);
 600         }
 601         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
 602             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 603                 ethtool_link_ksettings_add_link_mode(ks, supported,
 604                                                      10000baseKR_Full);
 605                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 606                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 607                                                              10000baseKR_Full);
 608         }
 609         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
 610             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 611                 ethtool_link_ksettings_add_link_mode(ks, supported,
 612                                                      1000baseKX_Full);
 613                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 614                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 615                                                              1000baseKX_Full);
 616         }
 617         /* need to add 25G PHY types */
 618         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
 619                 ethtool_link_ksettings_add_link_mode(ks, supported,
 620                                                      25000baseKR_Full);
 621                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 622                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 623                                                              25000baseKR_Full);
 624         }
 625         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
 626                 ethtool_link_ksettings_add_link_mode(ks, supported,
 627                                                      25000baseCR_Full);
 628                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 629                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 630                                                              25000baseCR_Full);
 631         }
 632         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 633             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
 634                 ethtool_link_ksettings_add_link_mode(ks, supported,
 635                                                      25000baseSR_Full);
 636                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 637                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 638                                                              25000baseSR_Full);
 639         }
 640         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 641             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 642                 ethtool_link_ksettings_add_link_mode(ks, supported,
 643                                                      25000baseCR_Full);
 644                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 645                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 646                                                              25000baseCR_Full);
 647         }
 648         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 649             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 650             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 651             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 652             phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 653             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 654                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 655                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 656                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 657                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
 658                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 659                                                              FEC_NONE);
 660                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 661                                                              FEC_RS);
 662                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 663                                                              FEC_BASER);
 664                 }
 665         }
 666         /* need to add new 10G PHY types */
 667         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 668             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
 669                 ethtool_link_ksettings_add_link_mode(ks, supported,
 670                                                      10000baseCR_Full);
 671                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 672                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 673                                                              10000baseCR_Full);
 674         }
 675         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
 676                 ethtool_link_ksettings_add_link_mode(ks, supported,
 677                                                      10000baseSR_Full);
 678                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 679                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 680                                                              10000baseSR_Full);
 681         }
 682         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
 683                 ethtool_link_ksettings_add_link_mode(ks, supported,
 684                                                      10000baseLR_Full);
 685                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 686                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 687                                                              10000baseLR_Full);
 688         }
 689         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 690             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 691             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
 692                 ethtool_link_ksettings_add_link_mode(ks, supported,
 693                                                      1000baseX_Full);
 694                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 695                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 696                                                              1000baseX_Full);
 697         }
 698         /* Autoneg PHY types */
 699         if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
 700             phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
 701             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 702             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
 703             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 704             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 705             phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 706             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 707             phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
 708             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
 709             phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
 710             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
 711             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
 712             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
 713             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 714             phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
 715             phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
 716             phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
 717             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
 718             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
 719             phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 720             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 721             phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
 722             phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 723                 ethtool_link_ksettings_add_link_mode(ks, supported,
 724                                                      Autoneg);
 725                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 726                                                      Autoneg);
 727         }
 728 }
 729
 730 /**
 731  * i40e_get_settings_link_up_fec - Get the FEC mode encoding from mask
 732  * @req_fec_info: mask request FEC info
 733  * @ks: ethtool ksettings to fill in
 734  **/
 735 static void i40e_get_settings_link_up_fec(u8 req_fec_info,
 736                                           struct ethtool_link_ksettings *ks)
 737 {
 738         ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 739         ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 740         ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 741
 742         if ((I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) &&
 743             (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info)) {
 744                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 745                                                      FEC_NONE);
 746                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 747                                                      FEC_BASER);
 748                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 749         } else if (I40E_AQ_SET_FEC_REQUEST_RS & req_fec_info) {
 750                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 751         } else if (I40E_AQ_SET_FEC_REQUEST_KR & req_fec_info) {
 752                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 753                                                      FEC_BASER);
 754         } else {
 755                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 756                                                      FEC_NONE);
 757         }
 758 }
 759
 760 /**
 761  * i40e_get_settings_link_up - Get the Link settings for when link is up
 762  * @hw: hw structure
 763  * @ks: ethtool ksettings to fill in
 764  * @netdev: network interface device structure
 765  * @pf: pointer to physical function struct
 766  **/
 767 static void i40e_get_settings_link_up(struct i40e_hw *hw,
 768                                       struct ethtool_link_ksettings *ks,
 769                                       struct net_device *netdev,
 770                                       struct i40e_pf *pf)
 771 {
 772         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 773         struct ethtool_link_ksettings cap_ksettings;
 774         u32 link_speed = hw_link_info->link_speed;
 775
 776         /* Initialize supported and advertised settings based on phy settings */
 777         switch (hw_link_info->phy_type) {
 778         case I40E_PHY_TYPE_40GBASE_CR4:
 779         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 780                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 781                 ethtool_link_ksettings_add_link_mode(ks, supported,
 782                                                      40000baseCR4_Full);
 783                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 784                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 785                                                      40000baseCR4_Full);
 786                 break;
 787         case I40E_PHY_TYPE_XLAUI:
 788         case I40E_PHY_TYPE_XLPPI:
 789         case I40E_PHY_TYPE_40GBASE_AOC:
 790                 ethtool_link_ksettings_add_link_mode(ks, supported,
 791                                                      40000baseCR4_Full);
 792                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 793                                                      40000baseCR4_Full);
 794                 break;
 795         case I40E_PHY_TYPE_40GBASE_SR4:
 796                 ethtool_link_ksettings_add_link_mode(ks, supported,
 797                                                      40000baseSR4_Full);
 798                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 799                                                      40000baseSR4_Full);
 800                 break;
 801         case I40E_PHY_TYPE_40GBASE_LR4:
 802                 ethtool_link_ksettings_add_link_mode(ks, supported,
 803                                                      40000baseLR4_Full);
 804                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 805                                                      40000baseLR4_Full);
 806                 break;
 807         case I40E_PHY_TYPE_25GBASE_SR:
 808         case I40E_PHY_TYPE_25GBASE_LR:
 809         case I40E_PHY_TYPE_10GBASE_SR:
 810         case I40E_PHY_TYPE_10GBASE_LR:
 811         case I40E_PHY_TYPE_1000BASE_SX:
 812         case I40E_PHY_TYPE_1000BASE_LX:
 813                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 814                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 815                 ethtool_link_ksettings_add_link_mode(ks, supported,
 816                                                      25000baseSR_Full);
 817                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 818                                                      25000baseSR_Full);
 819                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 820                 ethtool_link_ksettings_add_link_mode(ks, supported,
 821                                                      10000baseSR_Full);
 822                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 823                                                      10000baseSR_Full);
 824                 ethtool_link_ksettings_add_link_mode(ks, supported,
 825                                                      10000baseLR_Full);
 826                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 827                                                      10000baseLR_Full);
 828                 ethtool_link_ksettings_add_link_mode(ks, supported,
 829                                                      1000baseX_Full);
 830                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 831                                                      1000baseX_Full);
 832                 ethtool_link_ksettings_add_link_mode(ks, supported,
 833                                                      10000baseT_Full);
 834                 if (hw_link_info->module_type[2] &
 835                     I40E_MODULE_TYPE_1000BASE_SX ||
 836                     hw_link_info->module_type[2] &
 837                     I40E_MODULE_TYPE_1000BASE_LX) {
 838                         ethtool_link_ksettings_add_link_mode(ks, supported,
 839                                                              1000baseT_Full);
 840                         if (hw_link_info->requested_speeds &
 841                             I40E_LINK_SPEED_1GB)
 842                                 ethtool_link_ksettings_add_link_mode(
 843                                      ks, advertising, 1000baseT_Full);
 844                 }
 845                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 846                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 847                                                              10000baseT_Full);
 848                 break;
 849         case I40E_PHY_TYPE_10GBASE_T:
 850         case I40E_PHY_TYPE_5GBASE_T_LINK_STATUS:
 851         case I40E_PHY_TYPE_2_5GBASE_T_LINK_STATUS:
 852         case I40E_PHY_TYPE_1000BASE_T:
 853         case I40E_PHY_TYPE_100BASE_TX:
 854                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 855                 ethtool_link_ksettings_add_link_mode(ks, supported,
 856                                                      10000baseT_Full);
 857                 ethtool_link_ksettings_add_link_mode(ks, supported,
 858                                                      5000baseT_Full);
 859                 ethtool_link_ksettings_add_link_mode(ks, supported,
 860                                                      2500baseT_Full);
 861                 ethtool_link_ksettings_add_link_mode(ks, supported,
 862                                                      1000baseT_Full);
 863                 ethtool_link_ksettings_add_link_mode(ks, supported,
 864                                                      100baseT_Full);
 865                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 866                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 867                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 868                                                              10000baseT_Full);
 869                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
 870                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 871                                                              5000baseT_Full);
 872                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
 873                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 874                                                              2500baseT_Full);
 875                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 876                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 877                                                              1000baseT_Full);
 878                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 879                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 880                                                              100baseT_Full);
 881                 break;
 882         case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
 883                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 884                 ethtool_link_ksettings_add_link_mode(ks, supported,
 885                                                      1000baseT_Full);
 886                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 887                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 888                                                      1000baseT_Full);
 889                 break;
 890         case I40E_PHY_TYPE_10GBASE_CR1_CU:
 891         case I40E_PHY_TYPE_10GBASE_CR1:
 892                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 893                 ethtool_link_ksettings_add_link_mode(ks, supported,
 894                                                      10000baseT_Full);
 895                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 896                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 897                                                      10000baseT_Full);
 898                 break;
 899         case I40E_PHY_TYPE_XAUI:
 900         case I40E_PHY_TYPE_XFI:
 901         case I40E_PHY_TYPE_SFI:
 902         case I40E_PHY_TYPE_10GBASE_SFPP_CU:
 903         case I40E_PHY_TYPE_10GBASE_AOC:
 904                 ethtool_link_ksettings_add_link_mode(ks, supported,
 905                                                      10000baseT_Full);
 906                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 907                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 908                                                              10000baseT_Full);
 909                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 910                 break;
 911         case I40E_PHY_TYPE_SGMII:
 912                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 913                 ethtool_link_ksettings_add_link_mode(ks, supported,
 914                                                      1000baseT_Full);
 915                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 916                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 917                                                              1000baseT_Full);
 918                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 919                         ethtool_link_ksettings_add_link_mode(ks, supported,
 920                                                              100baseT_Full);
 921                         if (hw_link_info->requested_speeds &
 922                             I40E_LINK_SPEED_100MB)
 923                                 ethtool_link_ksettings_add_link_mode(
 924                                       ks, advertising, 100baseT_Full);
 925                 }
 926                 break;
 927         case I40E_PHY_TYPE_40GBASE_KR4:
 928         case I40E_PHY_TYPE_25GBASE_KR:
 929         case I40E_PHY_TYPE_20GBASE_KR2:
 930         case I40E_PHY_TYPE_10GBASE_KR:
 931         case I40E_PHY_TYPE_10GBASE_KX4:
 932         case I40E_PHY_TYPE_1000BASE_KX:
 933                 ethtool_link_ksettings_add_link_mode(ks, supported,
 934                                                      40000baseKR4_Full);
 935                 ethtool_link_ksettings_add_link_mode(ks, supported,
 936                                                      25000baseKR_Full);
 937                 ethtool_link_ksettings_add_link_mode(ks, supported,
 938                                                      20000baseKR2_Full);
 939                 ethtool_link_ksettings_add_link_mode(ks, supported,
 940                                                      10000baseKR_Full);
 941                 ethtool_link_ksettings_add_link_mode(ks, supported,
 942                                                      10000baseKX4_Full);
 943                 ethtool_link_ksettings_add_link_mode(ks, supported,
 944                                                      1000baseKX_Full);
 945                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 946                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 947                                                      40000baseKR4_Full);
 948                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 949                                                      25000baseKR_Full);
 950                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 951                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 952                                                      20000baseKR2_Full);
 953                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 954                                                      10000baseKR_Full);
 955                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 956                                                      10000baseKX4_Full);
 957                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 958                                                      1000baseKX_Full);
 959                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 960                 break;
 961         case I40E_PHY_TYPE_25GBASE_CR:
 962                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 963                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 964                 ethtool_link_ksettings_add_link_mode(ks, supported,
 965                                                      25000baseCR_Full);
 966                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 967                                                      25000baseCR_Full);
 968                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 969
 970                 break;
 971         case I40E_PHY_TYPE_25GBASE_AOC:
 972         case I40E_PHY_TYPE_25GBASE_ACC:
 973                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 974                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 975                 ethtool_link_ksettings_add_link_mode(ks, supported,
 976                                                      25000baseCR_Full);
 977                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 978                                                      25000baseCR_Full);
 979                 i40e_get_settings_link_up_fec(hw_link_info->req_fec_info, ks);
 980
 981                 ethtool_link_ksettings_add_link_mode(ks, supported,
 982                                                      10000baseCR_Full);
 983                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 984                                                      10000baseCR_Full);
 985                 break;
 986         default:
 987                 /* if we got here and link is up something bad is afoot */
 988                 netdev_info(netdev,
 989                             "WARNING: Link is up but PHY type 0x%x is not recognized, or incorrect cable is in use\n",
 990                             hw_link_info->phy_type);
 991         }
 992
 993         /* Now that we've worked out everything that could be supported by the
 994          * current PHY type, get what is supported by the NVM and intersect
 995          * them to get what is truly supported
 996          */
 997         memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
 998         i40e_phy_type_to_ethtool(pf, &cap_ksettings);
 999         ethtool_intersect_link_masks(ks, &cap_ksettings);
1000
1001         /* Set speed and duplex */
1002         switch (link_speed) {
1003         case I40E_LINK_SPEED_40GB:
1004                 ks->base.speed = SPEED_40000;
1005                 break;
1006         case I40E_LINK_SPEED_25GB:
1007                 ks->base.speed = SPEED_25000;
1008                 break;
1009         case I40E_LINK_SPEED_20GB:
1010                 ks->base.speed = SPEED_20000;
1011                 break;
1012         case I40E_LINK_SPEED_10GB:
1013                 ks->base.speed = SPEED_10000;
1014                 break;
1015         case I40E_LINK_SPEED_5GB:
1016                 ks->base.speed = SPEED_5000;
1017                 break;
1018         case I40E_LINK_SPEED_2_5GB:
1019                 ks->base.speed = SPEED_2500;
1020                 break;
1021         case I40E_LINK_SPEED_1GB:
1022                 ks->base.speed = SPEED_1000;
1023                 break;
1024         case I40E_LINK_SPEED_100MB:
1025                 ks->base.speed = SPEED_100;
1026                 break;
1027         default:
1028                 ks->base.speed = SPEED_UNKNOWN;
1029                 break;
1030         }
1031         ks->base.duplex = DUPLEX_FULL;
1032 }
1033
1034 /**
1035  * i40e_get_settings_link_down - Get the Link settings for when link is down
1036  * @hw: hw structure
1037  * @ks: ethtool ksettings to fill in
1038  * @pf: pointer to physical function struct
1039  *
1040  * Reports link settings that can be determined when link is down
1041  **/
1042 static void i40e_get_settings_link_down(struct i40e_hw *hw,
1043                                         struct ethtool_link_ksettings *ks,
1044                                         struct i40e_pf *pf)
1045 {
1046         /* link is down and the driver needs to fall back on
1047          * supported phy types to figure out what info to display
1048          */
1049         i40e_phy_type_to_ethtool(pf, ks);
1050
1051         /* With no link speed and duplex are unknown */
1052         ks->base.speed = SPEED_UNKNOWN;
1053         ks->base.duplex = DUPLEX_UNKNOWN;
1054 }
1055
1056 /**
1057  * i40e_get_link_ksettings - Get Link Speed and Duplex settings
1058  * @netdev: network interface device structure
1059  * @ks: ethtool ksettings
1060  *
1061  * Reports speed/duplex settings based on media_type
1062  **/
1063 static int i40e_get_link_ksettings(struct net_device *netdev,
1064                                    struct ethtool_link_ksettings *ks)
1065 {
1066         struct i40e_netdev_priv *np = netdev_priv(netdev);
1067         struct i40e_pf *pf = np->vsi->back;
1068         struct i40e_hw *hw = &pf->hw;
1069         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1070         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1071
1072         ethtool_link_ksettings_zero_link_mode(ks, supported);
1073         ethtool_link_ksettings_zero_link_mode(ks, advertising);
1074
1075         if (link_up)
1076                 i40e_get_settings_link_up(hw, ks, netdev, pf);
1077         else
1078                 i40e_get_settings_link_down(hw, ks, pf);
1079
1080         /* Now set the settings that don't rely on link being up/down */
1081         /* Set autoneg settings */
1082         ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1083                             AUTONEG_ENABLE : AUTONEG_DISABLE);
1084
1085         /* Set media type settings */
1086         switch (hw->phy.media_type) {
1087         case I40E_MEDIA_TYPE_BACKPLANE:
1088                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
1089                 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
1090                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
1091                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1092                                                      Backplane);
1093                 ks->base.port = PORT_NONE;
1094                 break;
1095         case I40E_MEDIA_TYPE_BASET:
1096                 ethtool_link_ksettings_add_link_mode(ks, supported, TP);
1097                 ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
1098                 ks->base.port = PORT_TP;
1099                 break;
1100         case I40E_MEDIA_TYPE_DA:
1101         case I40E_MEDIA_TYPE_CX4:
1102                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1103                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1104                 ks->base.port = PORT_DA;
1105                 break;
1106         case I40E_MEDIA_TYPE_FIBER:
1107                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1108                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1109                 ks->base.port = PORT_FIBRE;
1110                 break;
1111         case I40E_MEDIA_TYPE_UNKNOWN:
1112         default:
1113                 ks->base.port = PORT_OTHER;
1114                 break;
1115         }
1116
1117         /* Set flow control settings */
1118         ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
1119         ethtool_link_ksettings_add_link_mode(ks, supported, Asym_Pause);
1120
1121         switch (hw->fc.requested_mode) {
1122         case I40E_FC_FULL:
1123                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1124                 break;
1125         case I40E_FC_TX_PAUSE:
1126                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1127                                                      Asym_Pause);
1128                 break;
1129         case I40E_FC_RX_PAUSE:
1130                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1131                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1132                                                      Asym_Pause);
1133                 break;
1134         default:
1135                 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1136                 ethtool_link_ksettings_del_link_mode(ks, advertising,
1137                                                      Asym_Pause);
1138                 break;
1139         }
1140
1141         return 0;
1142 }
1143
1144 /**
1145  * i40e_set_link_ksettings - Set Speed and Duplex
1146  * @netdev: network interface device structure
1147  * @ks: ethtool ksettings
1148  *
1149  * Set speed/duplex per media_types advertised/forced
1150  **/
1151 static int i40e_set_link_ksettings(struct net_device *netdev,
1152                                    const struct ethtool_link_ksettings *ks)
1153 {
1154         struct i40e_netdev_priv *np = netdev_priv(netdev);
1155         struct i40e_aq_get_phy_abilities_resp abilities;
1156         struct ethtool_link_ksettings safe_ks;
1157         struct ethtool_link_ksettings copy_ks;
1158         struct i40e_aq_set_phy_config config;
1159         struct i40e_pf *pf = np->vsi->back;
1160         struct i40e_vsi *vsi = np->vsi;
1161         struct i40e_hw *hw = &pf->hw;
1162         bool autoneg_changed = false;
1163         i40e_status status = 0;
1164         int timeout = 50;
1165         int err = 0;
1166         u8 autoneg;
1167
1168         /* Changing port settings is not supported if this isn't the
1169          * port's controlling PF
1170          */
1171         if (hw->partition_id != 1) {
1172                 i40e_partition_setting_complaint(pf);
1173                 return -EOPNOTSUPP;
1174         }
1175         if (vsi != pf->vsi[pf->lan_vsi])
1176                 return -EOPNOTSUPP;
1177         if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1178             hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1179             hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1180             hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1181             hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1182                 return -EOPNOTSUPP;
1183         if (hw->device_id == I40E_DEV_ID_KX_B ||
1184             hw->device_id == I40E_DEV_ID_KX_C ||
1185             hw->device_id == I40E_DEV_ID_20G_KR2 ||
1186             hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1187             hw->device_id == I40E_DEV_ID_25G_B ||
1188             hw->device_id == I40E_DEV_ID_KX_X722) {
1189                 netdev_info(netdev, "Changing settings is not supported on backplane.\n");
1190                 return -EOPNOTSUPP;
1191         }
1192
1193         /* copy the ksettings to copy_ks to avoid modifying the origin */
1194         memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1195
1196         /* save autoneg out of ksettings */
1197         autoneg = copy_ks.base.autoneg;
1198
1199         /* get our own copy of the bits to check against */
1200         memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1201         safe_ks.base.cmd = copy_ks.base.cmd;
1202         safe_ks.base.link_mode_masks_nwords =
1203                 copy_ks.base.link_mode_masks_nwords;
1204         i40e_get_link_ksettings(netdev, &safe_ks);
1205
1206         /* Get link modes supported by hardware and check against modes
1207          * requested by the user.  Return an error if unsupported mode was set.
1208          */
1209         if (!bitmap_subset(copy_ks.link_modes.advertising,
1210                            safe_ks.link_modes.supported,
1211                            __ETHTOOL_LINK_MODE_MASK_NBITS))
1212                 return -EINVAL;
1213
1214         /* set autoneg back to what it currently is */
1215         copy_ks.base.autoneg = safe_ks.base.autoneg;
1216
1217         /* If copy_ks.base and safe_ks.base are not the same now, then they are
1218          * trying to set something that we do not support.
1219          */
1220         if (memcmp(&copy_ks.base, &safe_ks.base,
1221                    sizeof(struct ethtool_link_settings)))
1222                 return -EOPNOTSUPP;
1223
1224         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1225                 timeout--;
1226                 if (!timeout)
1227                         return -EBUSY;
1228                 usleep_range(1000, 2000);
1229         }
1230
1231         /* Get the current phy config */
1232         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1233                                               NULL);
1234         if (status) {
1235                 err = -EAGAIN;
1236                 goto done;
1237         }
1238
1239         /* Copy abilities to config in case autoneg is not
1240          * set below
1241          */
1242         memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1243         config.abilities = abilities.abilities;
1244
1245         /* Check autoneg */
1246         if (autoneg == AUTONEG_ENABLE) {
1247                 /* If autoneg was not already enabled */
1248                 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1249                         /* If autoneg is not supported, return error */
1250                         if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1251                                                                    supported,
1252                                                                    Autoneg)) {
1253                                 netdev_info(netdev, "Autoneg not supported on this phy\n");
1254                                 err = -EINVAL;
1255                                 goto done;
1256                         }
1257                         /* Autoneg is allowed to change */
1258                         config.abilities = abilities.abilities |
1259                                            I40E_AQ_PHY_ENABLE_AN;
1260                         autoneg_changed = true;
1261                 }
1262         } else {
1263                 /* If autoneg is currently enabled */
1264                 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1265                         /* If autoneg is supported 10GBASE_T is the only PHY
1266                          * that can disable it, so otherwise return error
1267                          */
1268                         if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1269                                                                   supported,
1270                                                                   Autoneg) &&
1271                             hw->phy.media_type != I40E_MEDIA_TYPE_BASET) {
1272                                 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
1273                                 err = -EINVAL;
1274                                 goto done;
1275                         }
1276                         /* Autoneg is allowed to change */
1277                         config.abilities = abilities.abilities &
1278                                            ~I40E_AQ_PHY_ENABLE_AN;
1279                         autoneg_changed = true;
1280                 }
1281         }
1282
1283         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1284                                                   100baseT_Full))
1285                 config.link_speed |= I40E_LINK_SPEED_100MB;
1286         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1287                                                   1000baseT_Full) ||
1288             ethtool_link_ksettings_test_link_mode(ks, advertising,
1289                                                   1000baseX_Full) ||
1290             ethtool_link_ksettings_test_link_mode(ks, advertising,
1291                                                   1000baseKX_Full))
1292                 config.link_speed |= I40E_LINK_SPEED_1GB;
1293         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1294                                                   10000baseT_Full) ||
1295             ethtool_link_ksettings_test_link_mode(ks, advertising,
1296                                                   10000baseKX4_Full) ||
1297             ethtool_link_ksettings_test_link_mode(ks, advertising,
1298                                                   10000baseKR_Full) ||
1299             ethtool_link_ksettings_test_link_mode(ks, advertising,
1300                                                   10000baseCR_Full) ||
1301             ethtool_link_ksettings_test_link_mode(ks, advertising,
1302                                                   10000baseSR_Full) ||
1303             ethtool_link_ksettings_test_link_mode(ks, advertising,
1304                                                   10000baseLR_Full))
1305                 config.link_speed |= I40E_LINK_SPEED_10GB;
1306         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1307                                                   2500baseT_Full))
1308                 config.link_speed |= I40E_LINK_SPEED_2_5GB;
1309         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1310                                                   5000baseT_Full))
1311                 config.link_speed |= I40E_LINK_SPEED_5GB;
1312         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1313                                                   20000baseKR2_Full))
1314                 config.link_speed |= I40E_LINK_SPEED_20GB;
1315         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1316                                                   25000baseCR_Full) ||
1317             ethtool_link_ksettings_test_link_mode(ks, advertising,
1318                                                   25000baseKR_Full) ||
1319             ethtool_link_ksettings_test_link_mode(ks, advertising,
1320                                                   25000baseSR_Full))
1321                 config.link_speed |= I40E_LINK_SPEED_25GB;
1322         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1323                                                   40000baseKR4_Full) ||
1324             ethtool_link_ksettings_test_link_mode(ks, advertising,
1325                                                   40000baseCR4_Full) ||
1326             ethtool_link_ksettings_test_link_mode(ks, advertising,
1327                                                   40000baseSR4_Full) ||
1328             ethtool_link_ksettings_test_link_mode(ks, advertising,
1329                                                   40000baseLR4_Full))
1330                 config.link_speed |= I40E_LINK_SPEED_40GB;
1331
1332         /* If speed didn't get set, set it to what it currently is.
1333          * This is needed because if advertise is 0 (as it is when autoneg
1334          * is disabled) then speed won't get set.
1335          */
1336         if (!config.link_speed)
1337                 config.link_speed = abilities.link_speed;
1338         if (autoneg_changed || abilities.link_speed != config.link_speed) {
1339                 /* copy over the rest of the abilities */
1340                 config.phy_type = abilities.phy_type;
1341                 config.phy_type_ext = abilities.phy_type_ext;
1342                 config.eee_capability = abilities.eee_capability;
1343                 config.eeer = abilities.eeer_val;
1344                 config.low_power_ctrl = abilities.d3_lpan;
1345                 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1346                                     I40E_AQ_PHY_FEC_CONFIG_MASK;
1347
1348                 /* save the requested speeds */
1349                 hw->phy.link_info.requested_speeds = config.link_speed;
1350                 /* set link and auto negotiation so changes take effect */
1351                 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1352                 /* If link is up put link down */
1353                 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1354                         /* Tell the OS link is going down, the link will go
1355                          * back up when fw says it is ready asynchronously
1356                          */
1357                         i40e_print_link_message(vsi, false);
1358                         netif_carrier_off(netdev);
1359                         netif_tx_stop_all_queues(netdev);
1360                 }
1361
1362                 /* make the aq call */
1363                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1364                 if (status) {
1365                         netdev_info(netdev,
1366                                     "Set phy config failed, err %s aq_err %s\n",
1367                                     i40e_stat_str(hw, status),
1368                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1369                         err = -EAGAIN;
1370                         goto done;
1371                 }
1372
1373                 status = i40e_update_link_info(hw);
1374                 if (status)
1375                         netdev_dbg(netdev,
1376                                    "Updating link info failed with err %s aq_err %s\n",
1377                                    i40e_stat_str(hw, status),
1378                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1379
1380         } else {
1381                 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
1382         }
1383
1384 done:
1385         clear_bit(__I40E_CONFIG_BUSY, pf->state);
1386
1387         return err;
1388 }
1389
1390 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
1391 {
1392         struct i40e_netdev_priv *np = netdev_priv(netdev);
1393         struct i40e_aq_get_phy_abilities_resp abilities;
1394         struct i40e_pf *pf = np->vsi->back;
1395         struct i40e_hw *hw = &pf->hw;
1396         i40e_status status = 0;
1397         u32 flags = 0;
1398         int err = 0;
1399
1400         flags = READ_ONCE(pf->flags);
1401         i40e_set_fec_in_flags(fec_cfg, &flags);
1402
1403         /* Get the current phy config */
1404         memset(&abilities, 0, sizeof(abilities));
1405         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1406                                               NULL);
1407         if (status) {
1408                 err = -EAGAIN;
1409                 goto done;
1410         }
1411
1412         if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
1413                 struct i40e_aq_set_phy_config config;
1414
1415                 memset(&config, 0, sizeof(config));
1416                 config.phy_type = abilities.phy_type;
1417                 config.abilities = abilities.abilities |
1418                                    I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1419                 config.phy_type_ext = abilities.phy_type_ext;
1420                 config.link_speed = abilities.link_speed;
1421                 config.eee_capability = abilities.eee_capability;
1422                 config.eeer = abilities.eeer_val;
1423                 config.low_power_ctrl = abilities.d3_lpan;
1424                 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
1425                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1426                 if (status) {
1427                         netdev_info(netdev,
1428                                     "Set phy config failed, err %s aq_err %s\n",
1429                                     i40e_stat_str(hw, status),
1430                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1431                         err = -EAGAIN;
1432                         goto done;
1433                 }
1434                 pf->flags = flags;
1435                 status = i40e_update_link_info(hw);
1436                 if (status)
1437                         /* debug level message only due to relation to the link
1438                          * itself rather than to the FEC settings
1439                          * (e.g. no physical connection etc.)
1440                          */
1441                         netdev_dbg(netdev,
1442                                    "Updating link info failed with err %s aq_err %s\n",
1443                                    i40e_stat_str(hw, status),
1444                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1445         }
1446
1447 done:
1448         return err;
1449 }
1450
1451 static int i40e_get_fec_param(struct net_device *netdev,
1452                               struct ethtool_fecparam *fecparam)
1453 {
1454         struct i40e_netdev_priv *np = netdev_priv(netdev);
1455         struct i40e_aq_get_phy_abilities_resp abilities;
1456         struct i40e_pf *pf = np->vsi->back;
1457         struct i40e_hw *hw = &pf->hw;
1458         i40e_status status = 0;
1459         int err = 0;
1460         u8 fec_cfg;
1461
1462         /* Get the current phy config */
1463         memset(&abilities, 0, sizeof(abilities));
1464         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1465                                               NULL);
1466         if (status) {
1467                 err = -EAGAIN;
1468                 goto done;
1469         }
1470
1471         fecparam->fec = 0;
1472         fec_cfg = abilities.fec_cfg_curr_mod_ext_info;
1473         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
1474                 fecparam->fec |= ETHTOOL_FEC_AUTO;
1475         else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_RS |
1476                  I40E_AQ_SET_FEC_ABILITY_RS))
1477                 fecparam->fec |= ETHTOOL_FEC_RS;
1478         else if (fec_cfg & (I40E_AQ_SET_FEC_REQUEST_KR |
1479                  I40E_AQ_SET_FEC_ABILITY_KR))
1480                 fecparam->fec |= ETHTOOL_FEC_BASER;
1481         if (fec_cfg == 0)
1482                 fecparam->fec |= ETHTOOL_FEC_OFF;
1483
1484         if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
1485                 fecparam->active_fec = ETHTOOL_FEC_BASER;
1486         else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
1487                 fecparam->active_fec = ETHTOOL_FEC_RS;
1488         else
1489                 fecparam->active_fec = ETHTOOL_FEC_OFF;
1490 done:
1491         return err;
1492 }
1493
1494 static int i40e_set_fec_param(struct net_device *netdev,
1495                               struct ethtool_fecparam *fecparam)
1496 {
1497         struct i40e_netdev_priv *np = netdev_priv(netdev);
1498         struct i40e_pf *pf = np->vsi->back;
1499         struct i40e_hw *hw = &pf->hw;
1500         u8 fec_cfg = 0;
1501
1502         if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
1503             hw->device_id != I40E_DEV_ID_25G_B &&
1504             hw->device_id != I40E_DEV_ID_KX_X722)
1505                 return -EPERM;
1506
1507         if (hw->mac.type == I40E_MAC_X722 &&
1508             !(hw->flags & I40E_HW_FLAG_X722_FEC_REQUEST_CAPABLE)) {
1509                 netdev_err(netdev, "Setting FEC encoding not supported by firmware. Please update the NVM image.\n");
1510                 return -EOPNOTSUPP;
1511         }
1512
1513         switch (fecparam->fec) {
1514         case ETHTOOL_FEC_AUTO:
1515                 fec_cfg = I40E_AQ_SET_FEC_AUTO;
1516                 break;
1517         case ETHTOOL_FEC_RS:
1518                 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
1519                              I40E_AQ_SET_FEC_ABILITY_RS);
1520                 break;
1521         case ETHTOOL_FEC_BASER:
1522                 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
1523                              I40E_AQ_SET_FEC_ABILITY_KR);
1524                 break;
1525         case ETHTOOL_FEC_OFF:
1526         case ETHTOOL_FEC_NONE:
1527                 fec_cfg = 0;
1528                 break;
1529         default:
1530                 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
1531                          fecparam->fec);
1532                 return -EINVAL;
1533         }
1534
1535         return i40e_set_fec_cfg(netdev, fec_cfg);
1536 }
1537
1538 static int i40e_nway_reset(struct net_device *netdev)
1539 {
1540         /* restart autonegotiation */
1541         struct i40e_netdev_priv *np = netdev_priv(netdev);
1542         struct i40e_pf *pf = np->vsi->back;
1543         struct i40e_hw *hw = &pf->hw;
1544         bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1545         i40e_status ret = 0;
1546
1547         ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
1548         if (ret) {
1549                 netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
1550                             i40e_stat_str(hw, ret),
1551                             i40e_aq_str(hw, hw->aq.asq_last_status));
1552                 return -EIO;
1553         }
1554
1555         return 0;
1556 }
1557
1558 /**
1559  * i40e_get_pauseparam -  Get Flow Control status
1560  * @netdev: netdevice structure
1561  * @pause: buffer to return pause parameters
1562  *
1563  * Return tx/rx-pause status
1564  **/
1565 static void i40e_get_pauseparam(struct net_device *netdev,
1566                                 struct ethtool_pauseparam *pause)
1567 {
1568         struct i40e_netdev_priv *np = netdev_priv(netdev);
1569         struct i40e_pf *pf = np->vsi->back;
1570         struct i40e_hw *hw = &pf->hw;
1571         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1572         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1573
1574         pause->autoneg =
1575                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1576                   AUTONEG_ENABLE : AUTONEG_DISABLE);
1577
1578         /* PFC enabled so report LFC as off */
1579         if (dcbx_cfg->pfc.pfcenable) {
1580                 pause->rx_pause = 0;
1581                 pause->tx_pause = 0;
1582                 return;
1583         }
1584
1585         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1586                 pause->rx_pause = 1;
1587         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1588                 pause->tx_pause = 1;
1589         } else if (hw->fc.current_mode == I40E_FC_FULL) {
1590                 pause->rx_pause = 1;
1591                 pause->tx_pause = 1;
1592         }
1593 }
1594
1595 /**
1596  * i40e_set_pauseparam - Set Flow Control parameter
1597  * @netdev: network interface device structure
1598  * @pause: return tx/rx flow control status
1599  **/
1600 static int i40e_set_pauseparam(struct net_device *netdev,
1601                                struct ethtool_pauseparam *pause)
1602 {
1603         struct i40e_netdev_priv *np = netdev_priv(netdev);
1604         struct i40e_pf *pf = np->vsi->back;
1605         struct i40e_vsi *vsi = np->vsi;
1606         struct i40e_hw *hw = &pf->hw;
1607         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1608         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1609         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1610         i40e_status status;
1611         u8 aq_failures;
1612         int err = 0;
1613         u32 is_an;
1614
1615         /* Changing the port's flow control is not supported if this isn't the
1616          * port's controlling PF
1617          */
1618         if (hw->partition_id != 1) {
1619                 i40e_partition_setting_complaint(pf);
1620                 return -EOPNOTSUPP;
1621         }
1622
1623         if (vsi != pf->vsi[pf->lan_vsi])
1624                 return -EOPNOTSUPP;
1625
1626         is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1627         if (pause->autoneg != is_an) {
1628                 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1629                 return -EOPNOTSUPP;
1630         }
1631
1632         /* If we have link and don't have autoneg */
1633         if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1634                 /* Send message that it might not necessarily work*/
1635                 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
1636         }
1637
1638         if (dcbx_cfg->pfc.pfcenable) {
1639                 netdev_info(netdev,
1640                             "Priority flow control enabled. Cannot set link flow control.\n");
1641                 return -EOPNOTSUPP;
1642         }
1643
1644         if (pause->rx_pause && pause->tx_pause)
1645                 hw->fc.requested_mode = I40E_FC_FULL;
1646         else if (pause->rx_pause && !pause->tx_pause)
1647                 hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1648         else if (!pause->rx_pause && pause->tx_pause)
1649                 hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1650         else if (!pause->rx_pause && !pause->tx_pause)
1651                 hw->fc.requested_mode = I40E_FC_NONE;
1652         else
1653                 return -EINVAL;
1654
1655         /* Tell the OS link is going down, the link will go back up when fw
1656          * says it is ready asynchronously
1657          */
1658         i40e_print_link_message(vsi, false);
1659         netif_carrier_off(netdev);
1660         netif_tx_stop_all_queues(netdev);
1661
1662         /* Set the fc mode and only restart an if link is up*/
1663         status = i40e_set_fc(hw, &aq_failures, link_up);
1664
1665         if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1666                 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1667                             i40e_stat_str(hw, status),
1668                             i40e_aq_str(hw, hw->aq.asq_last_status));
1669                 err = -EAGAIN;
1670         }
1671         if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1672                 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1673                             i40e_stat_str(hw, status),
1674                             i40e_aq_str(hw, hw->aq.asq_last_status));
1675                 err = -EAGAIN;
1676         }
1677         if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1678                 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1679                             i40e_stat_str(hw, status),
1680                             i40e_aq_str(hw, hw->aq.asq_last_status));
1681                 err = -EAGAIN;
1682         }
1683
1684         if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1685                 /* Give it a little more time to try to come back */
1686                 msleep(75);
1687                 if (!test_bit(__I40E_DOWN, pf->state))
1688                         return i40e_nway_reset(netdev);
1689         }
1690
1691         return err;
1692 }
1693
1694 static u32 i40e_get_msglevel(struct net_device *netdev)
1695 {
1696         struct i40e_netdev_priv *np = netdev_priv(netdev);
1697         struct i40e_pf *pf = np->vsi->back;
1698         u32 debug_mask = pf->hw.debug_mask;
1699
1700         if (debug_mask)
1701                 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1702
1703         return pf->msg_enable;
1704 }
1705
1706 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1707 {
1708         struct i40e_netdev_priv *np = netdev_priv(netdev);
1709         struct i40e_pf *pf = np->vsi->back;
1710
1711         if (I40E_DEBUG_USER & data)
1712                 pf->hw.debug_mask = data;
1713         else
1714                 pf->msg_enable = data;
1715 }
1716
1717 static int i40e_get_regs_len(struct net_device *netdev)
1718 {
1719         int reg_count = 0;
1720         int i;
1721
1722         for (i = 0; i40e_reg_list[i].offset != 0; i++)
1723                 reg_count += i40e_reg_list[i].elements;
1724
1725         return reg_count * sizeof(u32);
1726 }
1727
1728 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1729                           void *p)
1730 {
1731         struct i40e_netdev_priv *np = netdev_priv(netdev);
1732         struct i40e_pf *pf = np->vsi->back;
1733         struct i40e_hw *hw = &pf->hw;
1734         u32 *reg_buf = p;
1735         unsigned int i, j, ri;
1736         u32 reg;
1737
1738         /* Tell ethtool which driver-version-specific regs output we have.
1739          *
1740          * At some point, if we have ethtool doing special formatting of
1741          * this data, it will rely on this version number to know how to
1742          * interpret things.  Hence, this needs to be updated if/when the
1743          * diags register table is changed.
1744          */
1745         regs->version = 1;
1746
1747         /* loop through the diags reg table for what to print */
1748         ri = 0;
1749         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1750                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
1751                         reg = i40e_reg_list[i].offset
1752                                 + (j * i40e_reg_list[i].stride);
1753                         reg_buf[ri++] = rd32(hw, reg);
1754                 }
1755         }
1756
1757 }
1758
1759 static int i40e_get_eeprom(struct net_device *netdev,
1760                            struct ethtool_eeprom *eeprom, u8 *bytes)
1761 {
1762         struct i40e_netdev_priv *np = netdev_priv(netdev);
1763         struct i40e_hw *hw = &np->vsi->back->hw;
1764         struct i40e_pf *pf = np->vsi->back;
1765         int ret_val = 0, len, offset;
1766         u8 *eeprom_buff;
1767         u16 i, sectors;
1768         bool last;
1769         u32 magic;
1770
1771 #define I40E_NVM_SECTOR_SIZE  4096
1772         if (eeprom->len == 0)
1773                 return -EINVAL;
1774
1775         /* check for NVMUpdate access method */
1776         magic = hw->vendor_id | (hw->device_id << 16);
1777         if (eeprom->magic && eeprom->magic != magic) {
1778                 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1779                 int errno = 0;
1780
1781                 /* make sure it is the right magic for NVMUpdate */
1782                 if ((eeprom->magic >> 16) != hw->device_id)
1783                         errno = -EINVAL;
1784                 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1785                          test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1786                         errno = -EBUSY;
1787                 else
1788                         ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1789
1790                 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1791                         dev_info(&pf->pdev->dev,
1792                                  "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1793                                  ret_val, hw->aq.asq_last_status, errno,
1794                                  (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1795                                  cmd->offset, cmd->data_size);
1796
1797                 return errno;
1798         }
1799
1800         /* normal ethtool get_eeprom support */
1801         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1802
1803         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1804         if (!eeprom_buff)
1805                 return -ENOMEM;
1806
1807         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1808         if (ret_val) {
1809                 dev_info(&pf->pdev->dev,
1810                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1811                          ret_val, hw->aq.asq_last_status);
1812                 goto free_buff;
1813         }
1814
1815         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1816         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1817         len = I40E_NVM_SECTOR_SIZE;
1818         last = false;
1819         for (i = 0; i < sectors; i++) {
1820                 if (i == (sectors - 1)) {
1821                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1822                         last = true;
1823                 }
1824                 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1825                 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1826                                 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1827                                 last, NULL);
1828                 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1829                         dev_info(&pf->pdev->dev,
1830                                  "read NVM failed, invalid offset 0x%x\n",
1831                                  offset);
1832                         break;
1833                 } else if (ret_val &&
1834                            hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1835                         dev_info(&pf->pdev->dev,
1836                                  "read NVM failed, access, offset 0x%x\n",
1837                                  offset);
1838                         break;
1839                 } else if (ret_val) {
1840                         dev_info(&pf->pdev->dev,
1841                                  "read NVM failed offset %d err=%d status=0x%x\n",
1842                                  offset, ret_val, hw->aq.asq_last_status);
1843                         break;
1844                 }
1845         }
1846
1847         i40e_release_nvm(hw);
1848         memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1849 free_buff:
1850         kfree(eeprom_buff);
1851         return ret_val;
1852 }
1853
1854 static int i40e_get_eeprom_len(struct net_device *netdev)
1855 {
1856         struct i40e_netdev_priv *np = netdev_priv(netdev);
1857         struct i40e_hw *hw = &np->vsi->back->hw;
1858         u32 val;
1859
1860 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1861         if (hw->mac.type == I40E_MAC_X722) {
1862                 val = X722_EEPROM_SCOPE_LIMIT + 1;
1863                 return val;
1864         }
1865         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1866                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1867                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1868         /* register returns value in power of 2, 64Kbyte chunks. */
1869         val = (64 * 1024) * BIT(val);
1870         return val;
1871 }
1872
1873 static int i40e_set_eeprom(struct net_device *netdev,
1874                            struct ethtool_eeprom *eeprom, u8 *bytes)
1875 {
1876         struct i40e_netdev_priv *np = netdev_priv(netdev);
1877         struct i40e_hw *hw = &np->vsi->back->hw;
1878         struct i40e_pf *pf = np->vsi->back;
1879         struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1880         int ret_val = 0;
1881         int errno = 0;
1882         u32 magic;
1883
1884         /* normal ethtool set_eeprom is not supported */
1885         magic = hw->vendor_id | (hw->device_id << 16);
1886         if (eeprom->magic == magic)
1887                 errno = -EOPNOTSUPP;
1888         /* check for NVMUpdate access method */
1889         else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1890                 errno = -EINVAL;
1891         else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1892                  test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1893                 errno = -EBUSY;
1894         else
1895                 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1896
1897         if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1898                 dev_info(&pf->pdev->dev,
1899                          "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1900                          ret_val, hw->aq.asq_last_status, errno,
1901                          (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1902                          cmd->offset, cmd->data_size);
1903
1904         return errno;
1905 }
1906
1907 static void i40e_get_drvinfo(struct net_device *netdev,
1908                              struct ethtool_drvinfo *drvinfo)
1909 {
1910         struct i40e_netdev_priv *np = netdev_priv(netdev);
1911         struct i40e_vsi *vsi = np->vsi;
1912         struct i40e_pf *pf = vsi->back;
1913
1914         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1915         strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1916                 sizeof(drvinfo->fw_version));
1917         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1918                 sizeof(drvinfo->bus_info));
1919         drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1920         if (pf->hw.pf_id == 0)
1921                 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1922 }
1923
1924 static void i40e_get_ringparam(struct net_device *netdev,
1925                                struct ethtool_ringparam *ring,
1926                                struct kernel_ethtool_ringparam *kernel_ring,
1927                                struct netlink_ext_ack *extack)
1928 {
1929         struct i40e_netdev_priv *np = netdev_priv(netdev);
1930         struct i40e_pf *pf = np->vsi->back;
1931         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1932
1933         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1934         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1935         ring->rx_mini_max_pending = 0;
1936         ring->rx_jumbo_max_pending = 0;
1937         ring->rx_pending = vsi->rx_rings[0]->count;
1938         ring->tx_pending = vsi->tx_rings[0]->count;
1939         ring->rx_mini_pending = 0;
1940         ring->rx_jumbo_pending = 0;
1941 }
1942
1943 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1944 {
1945         if (i40e_enabled_xdp_vsi(vsi)) {
1946                 return index < vsi->num_queue_pairs ||
1947                         (index >= vsi->alloc_queue_pairs &&
1948                          index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1949         }
1950
1951         return index < vsi->num_queue_pairs;
1952 }
1953
1954 static int i40e_set_ringparam(struct net_device *netdev,
1955                               struct ethtool_ringparam *ring,
1956                               struct kernel_ethtool_ringparam *kernel_ring,
1957                               struct netlink_ext_ack *extack)
1958 {
1959         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1960         struct i40e_netdev_priv *np = netdev_priv(netdev);
1961         struct i40e_hw *hw = &np->vsi->back->hw;
1962         struct i40e_vsi *vsi = np->vsi;
1963         struct i40e_pf *pf = vsi->back;
1964         u32 new_rx_count, new_tx_count;
1965         u16 tx_alloc_queue_pairs;
1966         int timeout = 50;
1967         int i, err = 0;
1968
1969         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1970                 return -EINVAL;
1971
1972         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1973             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1974             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1975             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1976                 netdev_info(netdev,
1977                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1978                             ring->tx_pending, ring->rx_pending,
1979                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1980                 return -EINVAL;
1981         }
1982
1983         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1984         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1985
1986         /* if nothing to do return success */
1987         if ((new_tx_count == vsi->tx_rings[0]->count) &&
1988             (new_rx_count == vsi->rx_rings[0]->count))
1989                 return 0;
1990
1991         /* If there is a AF_XDP page pool attached to any of Rx rings,
1992          * disallow changing the number of descriptors -- regardless
1993          * if the netdev is running or not.
1994          */
1995         if (i40e_xsk_any_rx_ring_enabled(vsi))
1996                 return -EBUSY;
1997
1998         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1999                 timeout--;
2000                 if (!timeout)
2001                         return -EBUSY;
2002                 usleep_range(1000, 2000);
2003         }
2004
2005         if (!netif_running(vsi->netdev)) {
2006                 /* simple case - set for the next time the netdev is started */
2007                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2008                         vsi->tx_rings[i]->count = new_tx_count;
2009                         vsi->rx_rings[i]->count = new_rx_count;
2010                         if (i40e_enabled_xdp_vsi(vsi))
2011                                 vsi->xdp_rings[i]->count = new_tx_count;
2012                 }
2013                 vsi->num_tx_desc = new_tx_count;
2014                 vsi->num_rx_desc = new_rx_count;
2015                 goto done;
2016         }
2017
2018         /* We can't just free everything and then setup again,
2019          * because the ISRs in MSI-X mode get passed pointers
2020          * to the Tx and Rx ring structs.
2021          */
2022
2023         /* alloc updated Tx and XDP Tx resources */
2024         tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
2025                                (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
2026         if (new_tx_count != vsi->tx_rings[0]->count) {
2027                 netdev_info(netdev,
2028                             "Changing Tx descriptor count from %d to %d.\n",
2029                             vsi->tx_rings[0]->count, new_tx_count);
2030                 tx_rings = kcalloc(tx_alloc_queue_pairs,
2031                                    sizeof(struct i40e_ring), GFP_KERNEL);
2032                 if (!tx_rings) {
2033                         err = -ENOMEM;
2034                         goto done;
2035                 }
2036
2037                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2038                         if (!i40e_active_tx_ring_index(vsi, i))
2039                                 continue;
2040
2041                         tx_rings[i] = *vsi->tx_rings[i];
2042                         tx_rings[i].count = new_tx_count;
2043                         /* the desc and bi pointers will be reallocated in the
2044                          * setup call
2045                          */
2046                         tx_rings[i].desc = NULL;
2047                         tx_rings[i].rx_bi = NULL;
2048                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
2049                         if (err) {
2050                                 while (i) {
2051                                         i--;
2052                                         if (!i40e_active_tx_ring_index(vsi, i))
2053                                                 continue;
2054                                         i40e_free_tx_resources(&tx_rings[i]);
2055                                 }
2056                                 kfree(tx_rings);
2057                                 tx_rings = NULL;
2058
2059                                 goto done;
2060                         }
2061                 }
2062         }
2063
2064         /* alloc updated Rx resources */
2065         if (new_rx_count != vsi->rx_rings[0]->count) {
2066                 netdev_info(netdev,
2067                             "Changing Rx descriptor count from %d to %d\n",
2068                             vsi->rx_rings[0]->count, new_rx_count);
2069                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
2070                                    sizeof(struct i40e_ring), GFP_KERNEL);
2071                 if (!rx_rings) {
2072                         err = -ENOMEM;
2073                         goto free_tx;
2074                 }
2075
2076                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2077                         u16 unused;
2078
2079                         /* clone ring and setup updated count */
2080                         rx_rings[i] = *vsi->rx_rings[i];
2081                         rx_rings[i].count = new_rx_count;
2082                         /* the desc and bi pointers will be reallocated in the
2083                          * setup call
2084                          */
2085                         rx_rings[i].desc = NULL;
2086                         rx_rings[i].rx_bi = NULL;
2087                         /* Clear cloned XDP RX-queue info before setup call */
2088                         memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
2089                         /* this is to allow wr32 to have something to write to
2090                          * during early allocation of Rx buffers
2091                          */
2092                         rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
2093                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
2094                         if (err)
2095                                 goto rx_unwind;
2096                         err = i40e_alloc_rx_bi(&rx_rings[i]);
2097                         if (err)
2098                                 goto rx_unwind;
2099
2100                         /* now allocate the Rx buffers to make sure the OS
2101                          * has enough memory, any failure here means abort
2102                          */
2103                         unused = I40E_DESC_UNUSED(&rx_rings[i]);
2104                         err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
2105 rx_unwind:
2106                         if (err) {
2107                                 do {
2108                                         i40e_free_rx_resources(&rx_rings[i]);
2109                                 } while (i--);
2110                                 kfree(rx_rings);
2111                                 rx_rings = NULL;
2112
2113                                 goto free_tx;
2114                         }
2115                 }
2116         }
2117
2118         /* Bring interface down, copy in the new ring info,
2119          * then restore the interface
2120          */
2121         i40e_down(vsi);
2122
2123         if (tx_rings) {
2124                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2125                         if (i40e_active_tx_ring_index(vsi, i)) {
2126                                 i40e_free_tx_resources(vsi->tx_rings[i]);
2127                                 *vsi->tx_rings[i] = tx_rings[i];
2128                         }
2129                 }
2130                 kfree(tx_rings);
2131                 tx_rings = NULL;
2132         }
2133
2134         if (rx_rings) {
2135                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2136                         i40e_free_rx_resources(vsi->rx_rings[i]);
2137                         /* get the real tail offset */
2138                         rx_rings[i].tail = vsi->rx_rings[i]->tail;
2139                         /* this is to fake out the allocation routine
2140                          * into thinking it has to realloc everything
2141                          * but the recycling logic will let us re-use
2142                          * the buffers allocated above
2143                          */
2144                         rx_rings[i].next_to_use = 0;
2145                         rx_rings[i].next_to_clean = 0;
2146                         rx_rings[i].next_to_alloc = 0;
2147                         /* do a struct copy */
2148                         *vsi->rx_rings[i] = rx_rings[i];
2149                 }
2150                 kfree(rx_rings);
2151                 rx_rings = NULL;
2152         }
2153
2154         vsi->num_tx_desc = new_tx_count;
2155         vsi->num_rx_desc = new_rx_count;
2156         i40e_up(vsi);
2157
2158 free_tx:
2159         /* error cleanup if the Rx allocations failed after getting Tx */
2160         if (tx_rings) {
2161                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2162                         if (i40e_active_tx_ring_index(vsi, i))
2163                                 i40e_free_tx_resources(vsi->tx_rings[i]);
2164                 }
2165                 kfree(tx_rings);
2166                 tx_rings = NULL;
2167         }
2168
2169 done:
2170         clear_bit(__I40E_CONFIG_BUSY, pf->state);
2171
2172         return err;
2173 }
2174
2175 /**
2176  * i40e_get_stats_count - return the stats count for a device
2177  * @netdev: the netdev to return the count for
2178  *
2179  * Returns the total number of statistics for this netdev. Note that even
2180  * though this is a function, it is required that the count for a specific
2181  * netdev must never change. Basing the count on static values such as the
2182  * maximum number of queues or the device type is ok. However, the API for
2183  * obtaining stats is *not* safe against changes based on non-static
2184  * values such as the *current* number of queues, or runtime flags.
2185  *
2186  * If a statistic is not always enabled, return it as part of the count
2187  * anyways, always return its string, and report its value as zero.
2188  **/
2189 static int i40e_get_stats_count(struct net_device *netdev)
2190 {
2191         struct i40e_netdev_priv *np = netdev_priv(netdev);
2192         struct i40e_vsi *vsi = np->vsi;
2193         struct i40e_pf *pf = vsi->back;
2194         int stats_len;
2195
2196         if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
2197                 stats_len = I40E_PF_STATS_LEN;
2198         else
2199                 stats_len = I40E_VSI_STATS_LEN;
2200
2201         /* The number of stats reported for a given net_device must remain
2202          * constant throughout the life of that device.
2203          *
2204          * This is because the API for obtaining the size, strings, and stats
2205          * is spread out over three separate ethtool ioctls. There is no safe
2206          * way to lock the number of stats across these calls, so we must
2207          * assume that they will never change.
2208          *
2209          * Due to this, we report the maximum number of queues, even if not
2210          * every queue is currently configured. Since we always allocate
2211          * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
2212          * works because the num_tx_queues is set at device creation and never
2213          * changes.
2214          */
2215         stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
2216
2217         return stats_len;
2218 }
2219
2220 static int i40e_get_sset_count(struct net_device *netdev, int sset)
2221 {
2222         struct i40e_netdev_priv *np = netdev_priv(netdev);
2223         struct i40e_vsi *vsi = np->vsi;
2224         struct i40e_pf *pf = vsi->back;
2225
2226         switch (sset) {
2227         case ETH_SS_TEST:
2228                 return I40E_TEST_LEN;
2229         case ETH_SS_STATS:
2230                 return i40e_get_stats_count(netdev);
2231         case ETH_SS_PRIV_FLAGS:
2232                 return I40E_PRIV_FLAGS_STR_LEN +
2233                         (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
2234         default:
2235                 return -EOPNOTSUPP;
2236         }
2237 }
2238
2239 /**
2240  * i40e_get_veb_tc_stats - copy VEB TC statistics to formatted structure
2241  * @tc: the TC statistics in VEB structure (veb->tc_stats)
2242  * @i: the index of traffic class in (veb->tc_stats) structure to copy
2243  *
2244  * Copy VEB TC statistics from structure of arrays (veb->tc_stats) to
2245  * one dimensional structure i40e_cp_veb_tc_stats.
2246  * Produce formatted i40e_cp_veb_tc_stats structure of the VEB TC
2247  * statistics for the given TC.
2248  **/
2249 static struct i40e_cp_veb_tc_stats
2250 i40e_get_veb_tc_stats(struct i40e_veb_tc_stats *tc, unsigned int i)
2251 {
2252         struct i40e_cp_veb_tc_stats veb_tc = {
2253                 .tc_rx_packets = tc->tc_rx_packets[i],
2254                 .tc_rx_bytes = tc->tc_rx_bytes[i],
2255                 .tc_tx_packets = tc->tc_tx_packets[i],
2256                 .tc_tx_bytes = tc->tc_tx_bytes[i],
2257         };
2258
2259         return veb_tc;
2260 }
2261
2262 /**
2263  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
2264  * @pf: the PF device structure
2265  * @i: the priority value to copy
2266  *
2267  * The PFC stats are found as arrays in pf->stats, which is not easy to pass
2268  * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
2269  * of the PFC stats for the given priority.
2270  **/
2271 static inline struct i40e_pfc_stats
2272 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
2273 {
2274 #define I40E_GET_PFC_STAT(stat, priority) \
2275         .stat = pf->stats.stat[priority]
2276
2277         struct i40e_pfc_stats pfc = {
2278                 I40E_GET_PFC_STAT(priority_xon_rx, i),
2279                 I40E_GET_PFC_STAT(priority_xoff_rx, i),
2280                 I40E_GET_PFC_STAT(priority_xon_tx, i),
2281                 I40E_GET_PFC_STAT(priority_xoff_tx, i),
2282                 I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
2283         };
2284         return pfc;
2285 }
2286
2287 /**
2288  * i40e_get_ethtool_stats - copy stat values into supplied buffer
2289  * @netdev: the netdev to collect stats for
2290  * @stats: ethtool stats command structure
2291  * @data: ethtool supplied buffer
2292  *
2293  * Copy the stats values for this netdev into the buffer. Expects data to be
2294  * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
2295  * statistics must be copied in a static order, and the count must not change
2296  * for a given netdev. See i40e_get_stats_count for more details.
2297  *
2298  * If a statistic is not currently valid (such as a disabled queue), this
2299  * function reports its value as zero.
2300  **/
2301 static void i40e_get_ethtool_stats(struct net_device *netdev,
2302                                    struct ethtool_stats *stats, u64 *data)
2303 {
2304         struct i40e_netdev_priv *np = netdev_priv(netdev);
2305         struct i40e_vsi *vsi = np->vsi;
2306         struct i40e_pf *pf = vsi->back;
2307         struct i40e_veb *veb = NULL;
2308         unsigned int i;
2309         bool veb_stats;
2310         u64 *p = data;
2311
2312         i40e_update_stats(vsi);
2313
2314         i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2315                                i40e_gstrings_net_stats);
2316
2317         i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2318
2319         rcu_read_lock();
2320         for (i = 0; i < netdev->num_tx_queues; i++) {
2321                 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
2322                 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
2323         }
2324         rcu_read_unlock();
2325
2326         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2327                 goto check_data_pointer;
2328
2329         veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2330                      (pf->lan_veb < I40E_MAX_VEB) &&
2331                      (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2332
2333         if (veb_stats) {
2334                 veb = pf->veb[pf->lan_veb];
2335                 i40e_update_veb_stats(veb);
2336         }
2337
2338         /* If veb stats aren't enabled, pass NULL instead of the veb so that
2339          * we initialize stats to zero and update the data pointer
2340          * intelligently
2341          */
2342         i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2343                                i40e_gstrings_veb_stats);
2344
2345         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2346                 if (veb_stats) {
2347                         struct i40e_cp_veb_tc_stats veb_tc =
2348                                 i40e_get_veb_tc_stats(&veb->tc_stats, i);
2349
2350                         i40e_add_ethtool_stats(&data, &veb_tc,
2351                                                i40e_gstrings_veb_tc_stats);
2352                 } else {
2353                         i40e_add_ethtool_stats(&data, NULL,
2354                                                i40e_gstrings_veb_tc_stats);
2355                 }
2356
2357         i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2358
2359         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2360                 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2361
2362                 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2363         }
2364
2365 check_data_pointer:
2366         WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2367                   "ethtool stats count mismatch!");
2368 }
2369
2370 /**
2371  * i40e_get_stat_strings - copy stat strings into supplied buffer
2372  * @netdev: the netdev to collect strings for
2373  * @data: supplied buffer to copy strings into
2374  *
2375  * Copy the strings related to stats for this netdev. Expects data to be
2376  * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2377  * strings must be copied in a static order and the total count must not
2378  * change for a given netdev. See i40e_get_stats_count for more details.
2379  **/
2380 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2381 {
2382         struct i40e_netdev_priv *np = netdev_priv(netdev);
2383         struct i40e_vsi *vsi = np->vsi;
2384         struct i40e_pf *pf = vsi->back;
2385         unsigned int i;
2386         u8 *p = data;
2387
2388         i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2389
2390         i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2391
2392         for (i = 0; i < netdev->num_tx_queues; i++) {
2393                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2394                                       "tx", i);
2395                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2396                                       "rx", i);
2397         }
2398
2399         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2400                 goto check_data_pointer;
2401
2402         i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2403
2404         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2405                 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2406
2407         i40e_add_stat_strings(&data, i40e_gstrings_stats);
2408
2409         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2410                 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2411
2412 check_data_pointer:
2413         WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2414                   "stat strings count mismatch!");
2415 }
2416
2417 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2418 {
2419         struct i40e_netdev_priv *np = netdev_priv(netdev);
2420         struct i40e_vsi *vsi = np->vsi;
2421         struct i40e_pf *pf = vsi->back;
2422         unsigned int i;
2423         u8 *p = data;
2424
2425         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++)
2426                 ethtool_sprintf(&p, i40e_gstrings_priv_flags[i].flag_string);
2427         if (pf->hw.pf_id != 0)
2428                 return;
2429         for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++)
2430                 ethtool_sprintf(&p, i40e_gl_gstrings_priv_flags[i].flag_string);
2431 }
2432
2433 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2434                              u8 *data)
2435 {
2436         switch (stringset) {
2437         case ETH_SS_TEST:
2438                 memcpy(data, i40e_gstrings_test,
2439                        I40E_TEST_LEN * ETH_GSTRING_LEN);
2440                 break;
2441         case ETH_SS_STATS:
2442                 i40e_get_stat_strings(netdev, data);
2443                 break;
2444         case ETH_SS_PRIV_FLAGS:
2445                 i40e_get_priv_flag_strings(netdev, data);
2446                 break;
2447         default:
2448                 break;
2449         }
2450 }
2451
2452 static int i40e_get_ts_info(struct net_device *dev,
2453                             struct ethtool_ts_info *info)
2454 {
2455         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
2456
2457         /* only report HW timestamping if PTP is enabled */
2458         if (!(pf->flags & I40E_FLAG_PTP))
2459                 return ethtool_op_get_ts_info(dev, info);
2460
2461         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2462                                 SOF_TIMESTAMPING_RX_SOFTWARE |
2463                                 SOF_TIMESTAMPING_SOFTWARE |
2464                                 SOF_TIMESTAMPING_TX_HARDWARE |
2465                                 SOF_TIMESTAMPING_RX_HARDWARE |
2466                                 SOF_TIMESTAMPING_RAW_HARDWARE;
2467
2468         if (pf->ptp_clock)
2469                 info->phc_index = ptp_clock_index(pf->ptp_clock);
2470         else
2471                 info->phc_index = -1;
2472
2473         info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2474
2475         info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2476                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2477                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2478                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2479
2480         if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2481                 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2482                                     BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2483                                     BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2484                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2485                                     BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2486                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2487                                     BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2488                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2489
2490         return 0;
2491 }
2492
2493 static u64 i40e_link_test(struct net_device *netdev, u64 *data)
2494 {
2495         struct i40e_netdev_priv *np = netdev_priv(netdev);
2496         struct i40e_pf *pf = np->vsi->back;
2497         i40e_status status;
2498         bool link_up = false;
2499
2500         netif_info(pf, hw, netdev, "link test\n");
2501         status = i40e_get_link_status(&pf->hw, &link_up);
2502         if (status) {
2503                 netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2504                 *data = 1;
2505                 return *data;
2506         }
2507
2508         if (link_up)
2509                 *data = 0;
2510         else
2511                 *data = 1;
2512
2513         return *data;
2514 }
2515
2516 static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
2517 {
2518         struct i40e_netdev_priv *np = netdev_priv(netdev);
2519         struct i40e_pf *pf = np->vsi->back;
2520
2521         netif_info(pf, hw, netdev, "register test\n");
2522         *data = i40e_diag_reg_test(&pf->hw);
2523
2524         return *data;
2525 }
2526
2527 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
2528 {
2529         struct i40e_netdev_priv *np = netdev_priv(netdev);
2530         struct i40e_pf *pf = np->vsi->back;
2531
2532         netif_info(pf, hw, netdev, "eeprom test\n");
2533         *data = i40e_diag_eeprom_test(&pf->hw);
2534
2535         /* forcebly clear the NVM Update state machine */
2536         pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2537
2538         return *data;
2539 }
2540
2541 static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
2542 {
2543         struct i40e_netdev_priv *np = netdev_priv(netdev);
2544         struct i40e_pf *pf = np->vsi->back;
2545         u16 swc_old = pf->sw_int_count;
2546
2547         netif_info(pf, hw, netdev, "interrupt test\n");
2548         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2549              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2550               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2551               I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2552               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2553               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2554         usleep_range(1000, 2000);
2555         *data = (swc_old == pf->sw_int_count);
2556
2557         return *data;
2558 }
2559
2560 static inline bool i40e_active_vfs(struct i40e_pf *pf)
2561 {
2562         struct i40e_vf *vfs = pf->vf;
2563         int i;
2564
2565         for (i = 0; i < pf->num_alloc_vfs; i++)
2566                 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2567                         return true;
2568         return false;
2569 }
2570
2571 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2572 {
2573         return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2574 }
2575
2576 static void i40e_diag_test(struct net_device *netdev,
2577                            struct ethtool_test *eth_test, u64 *data)
2578 {
2579         struct i40e_netdev_priv *np = netdev_priv(netdev);
2580         bool if_running = netif_running(netdev);
2581         struct i40e_pf *pf = np->vsi->back;
2582
2583         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2584                 /* Offline tests */
2585                 netif_info(pf, drv, netdev, "offline testing starting\n");
2586
2587                 set_bit(__I40E_TESTING, pf->state);
2588
2589                 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2590                         dev_warn(&pf->pdev->dev,
2591                                  "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2592                         data[I40E_ETH_TEST_REG]         = 1;
2593                         data[I40E_ETH_TEST_EEPROM]      = 1;
2594                         data[I40E_ETH_TEST_INTR]        = 1;
2595                         data[I40E_ETH_TEST_LINK]        = 1;
2596                         eth_test->flags |= ETH_TEST_FL_FAILED;
2597                         clear_bit(__I40E_TESTING, pf->state);
2598                         goto skip_ol_tests;
2599                 }
2600
2601                 /* If the device is online then take it offline */
2602                 if (if_running)
2603                         /* indicate we're in test mode */
2604                         i40e_close(netdev);
2605                 else
2606                         /* This reset does not affect link - if it is
2607                          * changed to a type of reset that does affect
2608                          * link then the following link test would have
2609                          * to be moved to before the reset
2610                          */
2611                         i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2612
2613                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2614                         eth_test->flags |= ETH_TEST_FL_FAILED;
2615
2616                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
2617                         eth_test->flags |= ETH_TEST_FL_FAILED;
2618
2619                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
2620                         eth_test->flags |= ETH_TEST_FL_FAILED;
2621
2622                 /* run reg test last, a reset is required after it */
2623                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
2624                         eth_test->flags |= ETH_TEST_FL_FAILED;
2625
2626                 clear_bit(__I40E_TESTING, pf->state);
2627                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2628
2629                 if (if_running)
2630                         i40e_open(netdev);
2631         } else {
2632                 /* Online tests */
2633                 netif_info(pf, drv, netdev, "online testing starting\n");
2634
2635                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2636                         eth_test->flags |= ETH_TEST_FL_FAILED;
2637
2638                 /* Offline only tests, not run in online; pass by default */
2639                 data[I40E_ETH_TEST_REG] = 0;
2640                 data[I40E_ETH_TEST_EEPROM] = 0;
2641                 data[I40E_ETH_TEST_INTR] = 0;
2642         }
2643
2644 skip_ol_tests:
2645
2646         netif_info(pf, drv, netdev, "testing finished\n");
2647 }
2648
2649 static void i40e_get_wol(struct net_device *netdev,
2650                          struct ethtool_wolinfo *wol)
2651 {
2652         struct i40e_netdev_priv *np = netdev_priv(netdev);
2653         struct i40e_pf *pf = np->vsi->back;
2654         struct i40e_hw *hw = &pf->hw;
2655         u16 wol_nvm_bits;
2656
2657         /* NVM bit on means WoL disabled for the port */
2658         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2659         if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2660                 wol->supported = 0;
2661                 wol->wolopts = 0;
2662         } else {
2663                 wol->supported = WAKE_MAGIC;
2664                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2665         }
2666 }
2667
2668 /**
2669  * i40e_set_wol - set the WakeOnLAN configuration
2670  * @netdev: the netdev in question
2671  * @wol: the ethtool WoL setting data
2672  **/
2673 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2674 {
2675         struct i40e_netdev_priv *np = netdev_priv(netdev);
2676         struct i40e_pf *pf = np->vsi->back;
2677         struct i40e_vsi *vsi = np->vsi;
2678         struct i40e_hw *hw = &pf->hw;
2679         u16 wol_nvm_bits;
2680
2681         /* WoL not supported if this isn't the controlling PF on the port */
2682         if (hw->partition_id != 1) {
2683                 i40e_partition_setting_complaint(pf);
2684                 return -EOPNOTSUPP;
2685         }
2686
2687         if (vsi != pf->vsi[pf->lan_vsi])
2688                 return -EOPNOTSUPP;
2689
2690         /* NVM bit on means WoL disabled for the port */
2691         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2692         if (BIT(hw->port) & wol_nvm_bits)
2693                 return -EOPNOTSUPP;
2694
2695         /* only magic packet is supported */
2696         if (wol->wolopts & ~WAKE_MAGIC)
2697                 return -EOPNOTSUPP;
2698
2699         /* is this a new value? */
2700         if (pf->wol_en != !!wol->wolopts) {
2701                 pf->wol_en = !!wol->wolopts;
2702                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
2703         }
2704
2705         return 0;
2706 }
2707
2708 static int i40e_set_phys_id(struct net_device *netdev,
2709                             enum ethtool_phys_id_state state)
2710 {
2711         struct i40e_netdev_priv *np = netdev_priv(netdev);
2712         i40e_status ret = 0;
2713         struct i40e_pf *pf = np->vsi->back;
2714         struct i40e_hw *hw = &pf->hw;
2715         int blink_freq = 2;
2716         u16 temp_status;
2717
2718         switch (state) {
2719         case ETHTOOL_ID_ACTIVE:
2720                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2721                         pf->led_status = i40e_led_get(hw);
2722                 } else {
2723                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2724                                 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2725                                                       NULL);
2726                         ret = i40e_led_get_phy(hw, &temp_status,
2727                                                &pf->phy_led_val);
2728                         pf->led_status = temp_status;
2729                 }
2730                 return blink_freq;
2731         case ETHTOOL_ID_ON:
2732                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2733                         i40e_led_set(hw, 0xf, false);
2734                 else
2735                         ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2736                 break;
2737         case ETHTOOL_ID_OFF:
2738                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2739                         i40e_led_set(hw, 0x0, false);
2740                 else
2741                         ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2742                 break;
2743         case ETHTOOL_ID_INACTIVE:
2744                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2745                         i40e_led_set(hw, pf->led_status, false);
2746                 } else {
2747                         ret = i40e_led_set_phy(hw, false, pf->led_status,
2748                                                (pf->phy_led_val |
2749                                                I40E_PHY_LED_MODE_ORIG));
2750                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2751                                 i40e_aq_set_phy_debug(hw, 0, NULL);
2752                 }
2753                 break;
2754         default:
2755                 break;
2756         }
2757         if (ret)
2758                 return -ENOENT;
2759         else
2760                 return 0;
2761 }
2762
2763 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2764  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2765  * 125us (8000 interrupts per second) == ITR(62)
2766  */
2767
2768 /**
2769  * __i40e_get_coalesce - get per-queue coalesce settings
2770  * @netdev: the netdev to check
2771  * @ec: ethtool coalesce data structure
2772  * @queue: which queue to pick
2773  *
2774  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2775  * are per queue. If queue is <0 then we default to queue 0 as the
2776  * representative value.
2777  **/
2778 static int __i40e_get_coalesce(struct net_device *netdev,
2779                                struct ethtool_coalesce *ec,
2780                                int queue)
2781 {
2782         struct i40e_netdev_priv *np = netdev_priv(netdev);
2783         struct i40e_ring *rx_ring, *tx_ring;
2784         struct i40e_vsi *vsi = np->vsi;
2785
2786         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2787         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2788
2789         /* rx and tx usecs has per queue value. If user doesn't specify the
2790          * queue, return queue 0's value to represent.
2791          */
2792         if (queue < 0)
2793                 queue = 0;
2794         else if (queue >= vsi->num_queue_pairs)
2795                 return -EINVAL;
2796
2797         rx_ring = vsi->rx_rings[queue];
2798         tx_ring = vsi->tx_rings[queue];
2799
2800         if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2801                 ec->use_adaptive_rx_coalesce = 1;
2802
2803         if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2804                 ec->use_adaptive_tx_coalesce = 1;
2805
2806         ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2807         ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2808
2809         /* we use the _usecs_high to store/set the interrupt rate limit
2810          * that the hardware supports, that almost but not quite
2811          * fits the original intent of the ethtool variable,
2812          * the rx_coalesce_usecs_high limits total interrupts
2813          * per second from both tx/rx sources.
2814          */
2815         ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2816         ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2817
2818         return 0;
2819 }
2820
2821 /**
2822  * i40e_get_coalesce - get a netdev's coalesce settings
2823  * @netdev: the netdev to check
2824  * @ec: ethtool coalesce data structure
2825  * @kernel_coal: ethtool CQE mode setting structure
2826  * @extack: extack for reporting error messages
2827  *
2828  * Gets the coalesce settings for a particular netdev. Note that if user has
2829  * modified per-queue settings, this only guarantees to represent queue 0. See
2830  * __i40e_get_coalesce for more details.
2831  **/
2832 static int i40e_get_coalesce(struct net_device *netdev,
2833                              struct ethtool_coalesce *ec,
2834                              struct kernel_ethtool_coalesce *kernel_coal,
2835                              struct netlink_ext_ack *extack)
2836 {
2837         return __i40e_get_coalesce(netdev, ec, -1);
2838 }
2839
2840 /**
2841  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2842  * @netdev: netdev structure
2843  * @ec: ethtool's coalesce settings
2844  * @queue: the particular queue to read
2845  *
2846  * Will read a specific queue's coalesce settings
2847  **/
2848 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2849                                        struct ethtool_coalesce *ec)
2850 {
2851         return __i40e_get_coalesce(netdev, ec, queue);
2852 }
2853
2854 /**
2855  * i40e_set_itr_per_queue - set ITR values for specific queue
2856  * @vsi: the VSI to set values for
2857  * @ec: coalesce settings from ethtool
2858  * @queue: the queue to modify
2859  *
2860  * Change the ITR settings for a specific queue.
2861  **/
2862 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2863                                    struct ethtool_coalesce *ec,
2864                                    int queue)
2865 {
2866         struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2867         struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2868         struct i40e_pf *pf = vsi->back;
2869         struct i40e_hw *hw = &pf->hw;
2870         struct i40e_q_vector *q_vector;
2871         u16 intrl;
2872
2873         intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2874
2875         rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2876         tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2877
2878         if (ec->use_adaptive_rx_coalesce)
2879                 rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2880         else
2881                 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2882
2883         if (ec->use_adaptive_tx_coalesce)
2884                 tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2885         else
2886                 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2887
2888         q_vector = rx_ring->q_vector;
2889         q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2890
2891         q_vector = tx_ring->q_vector;
2892         q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2893
2894         /* The interrupt handler itself will take care of programming
2895          * the Tx and Rx ITR values based on the values we have entered
2896          * into the q_vector, no need to write the values now.
2897          */
2898
2899         wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2900         i40e_flush(hw);
2901 }
2902
2903 /**
2904  * __i40e_set_coalesce - set coalesce settings for particular queue
2905  * @netdev: the netdev to change
2906  * @ec: ethtool coalesce settings
2907  * @queue: the queue to change
2908  *
2909  * Sets the coalesce settings for a particular queue.
2910  **/
2911 static int __i40e_set_coalesce(struct net_device *netdev,
2912                                struct ethtool_coalesce *ec,
2913                                int queue)
2914 {
2915         struct i40e_netdev_priv *np = netdev_priv(netdev);
2916         u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2917         struct i40e_vsi *vsi = np->vsi;
2918         struct i40e_pf *pf = vsi->back;
2919         int i;
2920
2921         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2922                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2923
2924         if (queue < 0) {
2925                 cur_rx_itr = vsi->rx_rings[0]->itr_setting;
2926                 cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2927         } else if (queue < vsi->num_queue_pairs) {
2928                 cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
2929                 cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2930         } else {
2931                 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2932                            vsi->num_queue_pairs - 1);
2933                 return -EINVAL;
2934         }
2935
2936         cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2937         cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2938
2939         /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2940         if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2941                 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2942                 return -EINVAL;
2943         }
2944
2945         if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2946                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2947                            INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2948                 return -EINVAL;
2949         }
2950
2951         if (ec->rx_coalesce_usecs != cur_rx_itr &&
2952             ec->use_adaptive_rx_coalesce) {
2953                 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2954                 return -EINVAL;
2955         }
2956
2957         if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2958                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2959                 return -EINVAL;
2960         }
2961
2962         if (ec->tx_coalesce_usecs != cur_tx_itr &&
2963             ec->use_adaptive_tx_coalesce) {
2964                 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2965                 return -EINVAL;
2966         }
2967
2968         if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2969                 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2970                 return -EINVAL;
2971         }
2972
2973         if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2974                 ec->rx_coalesce_usecs = I40E_MIN_ITR;
2975
2976         if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2977                 ec->tx_coalesce_usecs = I40E_MIN_ITR;
2978
2979         intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2980         vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2981         if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2982                 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2983                            vsi->int_rate_limit);
2984         }
2985
2986         /* rx and tx usecs has per queue value. If user doesn't specify the
2987          * queue, apply to all queues.
2988          */
2989         if (queue < 0) {
2990                 for (i = 0; i < vsi->num_queue_pairs; i++)
2991                         i40e_set_itr_per_queue(vsi, ec, i);
2992         } else {
2993                 i40e_set_itr_per_queue(vsi, ec, queue);
2994         }
2995
2996         return 0;
2997 }
2998
2999 /**
3000  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
3001  * @netdev: the netdev to change
3002  * @ec: ethtool coalesce settings
3003  * @kernel_coal: ethtool CQE mode setting structure
3004  * @extack: extack for reporting error messages
3005  *
3006  * This will set each queue to the same coalesce settings.
3007  **/
3008 static int i40e_set_coalesce(struct net_device *netdev,
3009                              struct ethtool_coalesce *ec,
3010                              struct kernel_ethtool_coalesce *kernel_coal,
3011                              struct netlink_ext_ack *extack)
3012 {
3013         return __i40e_set_coalesce(netdev, ec, -1);
3014 }
3015
3016 /**
3017  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
3018  * @netdev: the netdev to change
3019  * @ec: ethtool's coalesce settings
3020  * @queue: the queue to change
3021  *
3022  * Sets the specified queue's coalesce settings.
3023  **/
3024 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
3025                                        struct ethtool_coalesce *ec)
3026 {
3027         return __i40e_set_coalesce(netdev, ec, queue);
3028 }
3029
3030 /**
3031  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
3032  * @pf: pointer to the physical function struct
3033  * @cmd: ethtool rxnfc command
3034  *
3035  * Returns Success if the flow is supported, else Invalid Input.
3036  **/
3037 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
3038 {
3039         struct i40e_hw *hw = &pf->hw;
3040         u8 flow_pctype = 0;
3041         u64 i_set = 0;
3042
3043         cmd->data = 0;
3044
3045         switch (cmd->flow_type) {
3046         case TCP_V4_FLOW:
3047                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3048                 break;
3049         case UDP_V4_FLOW:
3050                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3051                 break;
3052         case TCP_V6_FLOW:
3053                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3054                 break;
3055         case UDP_V6_FLOW:
3056                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3057                 break;
3058         case SCTP_V4_FLOW:
3059         case AH_ESP_V4_FLOW:
3060         case AH_V4_FLOW:
3061         case ESP_V4_FLOW:
3062         case IPV4_FLOW:
3063         case SCTP_V6_FLOW:
3064         case AH_ESP_V6_FLOW:
3065         case AH_V6_FLOW:
3066         case ESP_V6_FLOW:
3067         case IPV6_FLOW:
3068                 /* Default is src/dest for IP, no matter the L4 hashing */
3069                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
3070                 break;
3071         default:
3072                 return -EINVAL;
3073         }
3074
3075         /* Read flow based hash input set register */
3076         if (flow_pctype) {
3077                 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3078                                               flow_pctype)) |
3079                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3080                                                flow_pctype)) << 32);
3081         }
3082
3083         /* Process bits of hash input set */
3084         if (i_set) {
3085                 if (i_set & I40E_L4_SRC_MASK)
3086                         cmd->data |= RXH_L4_B_0_1;
3087                 if (i_set & I40E_L4_DST_MASK)
3088                         cmd->data |= RXH_L4_B_2_3;
3089
3090                 if (cmd->flow_type == TCP_V4_FLOW ||
3091                     cmd->flow_type == UDP_V4_FLOW) {
3092                         if (i_set & I40E_L3_SRC_MASK)
3093                                 cmd->data |= RXH_IP_SRC;
3094                         if (i_set & I40E_L3_DST_MASK)
3095                                 cmd->data |= RXH_IP_DST;
3096                 } else if (cmd->flow_type == TCP_V6_FLOW ||
3097                           cmd->flow_type == UDP_V6_FLOW) {
3098                         if (i_set & I40E_L3_V6_SRC_MASK)
3099                                 cmd->data |= RXH_IP_SRC;
3100                         if (i_set & I40E_L3_V6_DST_MASK)
3101                                 cmd->data |= RXH_IP_DST;
3102                 }
3103         }
3104
3105         return 0;
3106 }
3107
3108 /**
3109  * i40e_check_mask - Check whether a mask field is set
3110  * @mask: the full mask value
3111  * @field: mask of the field to check
3112  *
3113  * If the given mask is fully set, return positive value. If the mask for the
3114  * field is fully unset, return zero. Otherwise return a negative error code.
3115  **/
3116 static int i40e_check_mask(u64 mask, u64 field)
3117 {
3118         u64 value = mask & field;
3119
3120         if (value == field)
3121                 return 1;
3122         else if (!value)
3123                 return 0;
3124         else
3125                 return -1;
3126 }
3127
3128 /**
3129  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
3130  * @fsp: pointer to rx flow specification
3131  * @data: pointer to userdef data structure for storage
3132  *
3133  * Read the user-defined data and deconstruct the value into a structure. No
3134  * other code should read the user-defined data, so as to ensure that every
3135  * place consistently reads the value correctly.
3136  *
3137  * The user-defined field is a 64bit Big Endian format value, which we
3138  * deconstruct by reading bits or bit fields from it. Single bit flags shall
3139  * be defined starting from the highest bits, while small bit field values
3140  * shall be defined starting from the lowest bits.
3141  *
3142  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
3143  * and the filter should be rejected. The data structure will always be
3144  * modified even if FLOW_EXT is not set.
3145  *
3146  **/
3147 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3148                                         struct i40e_rx_flow_userdef *data)
3149 {
3150         u64 value, mask;
3151         int valid;
3152
3153         /* Zero memory first so it's always consistent. */
3154         memset(data, 0, sizeof(*data));
3155
3156         if (!(fsp->flow_type & FLOW_EXT))
3157                 return 0;
3158
3159         value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
3160         mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
3161
3162 #define I40E_USERDEF_FLEX_WORD          GENMASK_ULL(15, 0)
3163 #define I40E_USERDEF_FLEX_OFFSET        GENMASK_ULL(31, 16)
3164 #define I40E_USERDEF_FLEX_FILTER        GENMASK_ULL(31, 0)
3165
3166         valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
3167         if (valid < 0) {
3168                 return -EINVAL;
3169         } else if (valid) {
3170                 data->flex_word = value & I40E_USERDEF_FLEX_WORD;
3171                 data->flex_offset =
3172                         (value & I40E_USERDEF_FLEX_OFFSET) >> 16;
3173                 data->flex_filter = true;
3174         }
3175
3176         return 0;
3177 }
3178
3179 /**
3180  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
3181  * @fsp: pointer to rx_flow specification
3182  * @data: pointer to return userdef data
3183  *
3184  * Reads the userdef data structure and properly fills in the user defined
3185  * fields of the rx_flow_spec.
3186  **/
3187 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3188                                         struct i40e_rx_flow_userdef *data)
3189 {
3190         u64 value = 0, mask = 0;
3191
3192         if (data->flex_filter) {
3193                 value |= data->flex_word;
3194                 value |= (u64)data->flex_offset << 16;
3195                 mask |= I40E_USERDEF_FLEX_FILTER;
3196         }
3197
3198         if (value || mask)
3199                 fsp->flow_type |= FLOW_EXT;
3200
3201         *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
3202         *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
3203 }
3204
3205 /**
3206  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
3207  * @pf: Pointer to the physical function struct
3208  * @cmd: The command to get or set Rx flow classification rules
3209  * @rule_locs: Array of used rule locations
3210  *
3211  * This function populates both the total and actual rule count of
3212  * the ethtool flow classification command
3213  *
3214  * Returns 0 on success or -EMSGSIZE if entry not found
3215  **/
3216 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
3217                                      struct ethtool_rxnfc *cmd,
3218                                      u32 *rule_locs)
3219 {
3220         struct i40e_fdir_filter *rule;
3221         struct hlist_node *node2;
3222         int cnt = 0;
3223
3224         /* report total rule count */
3225         cmd->data = i40e_get_fd_cnt_all(pf);
3226
3227         hlist_for_each_entry_safe(rule, node2,
3228                                   &pf->fdir_filter_list, fdir_node) {
3229                 if (cnt == cmd->rule_cnt)
3230                         return -EMSGSIZE;
3231
3232                 rule_locs[cnt] = rule->fd_id;
3233                 cnt++;
3234         }
3235
3236         cmd->rule_cnt = cnt;
3237
3238         return 0;
3239 }
3240
3241 /**
3242  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
3243  * @pf: Pointer to the physical function struct
3244  * @cmd: The command to get or set Rx flow classification rules
3245  *
3246  * This function looks up a filter based on the Rx flow classification
3247  * command and fills the flow spec info for it if found
3248  *
3249  * Returns 0 on success or -EINVAL if filter not found
3250  **/
3251 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
3252                                        struct ethtool_rxnfc *cmd)
3253 {
3254         struct ethtool_rx_flow_spec *fsp =
3255                         (struct ethtool_rx_flow_spec *)&cmd->fs;
3256         struct i40e_rx_flow_userdef userdef = {0};
3257         struct i40e_fdir_filter *rule = NULL;
3258         struct hlist_node *node2;
3259         u64 input_set;
3260         u16 index;
3261
3262         hlist_for_each_entry_safe(rule, node2,
3263                                   &pf->fdir_filter_list, fdir_node) {
3264                 if (fsp->location <= rule->fd_id)
3265                         break;
3266         }
3267
3268         if (!rule || fsp->location != rule->fd_id)
3269                 return -EINVAL;
3270
3271         fsp->flow_type = rule->flow_type;
3272         if (fsp->flow_type == IP_USER_FLOW) {
3273                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
3274                 fsp->h_u.usr_ip4_spec.proto = 0;
3275                 fsp->m_u.usr_ip4_spec.proto = 0;
3276         }
3277
3278         if (fsp->flow_type == IPV6_USER_FLOW ||
3279             fsp->flow_type == UDP_V6_FLOW ||
3280             fsp->flow_type == TCP_V6_FLOW ||
3281             fsp->flow_type == SCTP_V6_FLOW) {
3282                 /* Reverse the src and dest notion, since the HW views them
3283                  * from Tx perspective where as the user expects it from
3284                  * Rx filter view.
3285                  */
3286                 fsp->h_u.tcp_ip6_spec.psrc = rule->dst_port;
3287                 fsp->h_u.tcp_ip6_spec.pdst = rule->src_port;
3288                 memcpy(fsp->h_u.tcp_ip6_spec.ip6dst, rule->src_ip6,
3289                        sizeof(__be32) * 4);
3290                 memcpy(fsp->h_u.tcp_ip6_spec.ip6src, rule->dst_ip6,
3291                        sizeof(__be32) * 4);
3292         } else {
3293                 /* Reverse the src and dest notion, since the HW views them
3294                  * from Tx perspective where as the user expects it from
3295                  * Rx filter view.
3296                  */
3297                 fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
3298                 fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
3299                 fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
3300                 fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
3301         }
3302
3303         switch (rule->flow_type) {
3304         case SCTP_V4_FLOW:
3305                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3306                 break;
3307         case TCP_V4_FLOW:
3308                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3309                 break;
3310         case UDP_V4_FLOW:
3311                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3312                 break;
3313         case SCTP_V6_FLOW:
3314                 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
3315                 break;
3316         case TCP_V6_FLOW:
3317                 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3318                 break;
3319         case UDP_V6_FLOW:
3320                 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3321                 break;
3322         case IP_USER_FLOW:
3323                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3324                 break;
3325         case IPV6_USER_FLOW:
3326                 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
3327                 break;
3328         default:
3329                 /* If we have stored a filter with a flow type not listed here
3330                  * it is almost certainly a driver bug. WARN(), and then
3331                  * assign the input_set as if all fields are enabled to avoid
3332                  * reading unassigned memory.
3333                  */
3334                 WARN(1, "Missing input set index for flow_type %d\n",
3335                      rule->flow_type);
3336                 input_set = 0xFFFFFFFFFFFFFFFFULL;
3337                 goto no_input_set;
3338         }
3339
3340         input_set = i40e_read_fd_input_set(pf, index);
3341
3342 no_input_set:
3343         if (input_set & I40E_L3_V6_SRC_MASK) {
3344                 fsp->m_u.tcp_ip6_spec.ip6src[0] = htonl(0xFFFFFFFF);
3345                 fsp->m_u.tcp_ip6_spec.ip6src[1] = htonl(0xFFFFFFFF);
3346                 fsp->m_u.tcp_ip6_spec.ip6src[2] = htonl(0xFFFFFFFF);
3347                 fsp->m_u.tcp_ip6_spec.ip6src[3] = htonl(0xFFFFFFFF);
3348         }
3349
3350         if (input_set & I40E_L3_V6_DST_MASK) {
3351                 fsp->m_u.tcp_ip6_spec.ip6dst[0] = htonl(0xFFFFFFFF);
3352                 fsp->m_u.tcp_ip6_spec.ip6dst[1] = htonl(0xFFFFFFFF);
3353                 fsp->m_u.tcp_ip6_spec.ip6dst[2] = htonl(0xFFFFFFFF);
3354                 fsp->m_u.tcp_ip6_spec.ip6dst[3] = htonl(0xFFFFFFFF);
3355         }
3356
3357         if (input_set & I40E_L3_SRC_MASK)
3358                 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
3359
3360         if (input_set & I40E_L3_DST_MASK)
3361                 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
3362
3363         if (input_set & I40E_L4_SRC_MASK)
3364                 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3365
3366         if (input_set & I40E_L4_DST_MASK)
3367                 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3368
3369         if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3370                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
3371         else
3372                 fsp->ring_cookie = rule->q_index;
3373
3374         if (rule->vlan_tag) {
3375                 fsp->h_ext.vlan_etype = rule->vlan_etype;
3376                 fsp->m_ext.vlan_etype = htons(0xFFFF);
3377                 fsp->h_ext.vlan_tci = rule->vlan_tag;
3378                 fsp->m_ext.vlan_tci = htons(0xFFFF);
3379                 fsp->flow_type |= FLOW_EXT;
3380         }
3381
3382         if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3383                 struct i40e_vsi *vsi;
3384
3385                 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
3386                 if (vsi && vsi->type == I40E_VSI_SRIOV) {
3387                         /* VFs are zero-indexed by the driver, but ethtool
3388                          * expects them to be one-indexed, so add one here
3389                          */
3390                         u64 ring_vf = vsi->vf_id + 1;
3391
3392                         ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3393                         fsp->ring_cookie |= ring_vf;
3394                 }
3395         }
3396
3397         if (rule->flex_filter) {
3398                 userdef.flex_filter = true;
3399                 userdef.flex_word = be16_to_cpu(rule->flex_word);
3400                 userdef.flex_offset = rule->flex_offset;
3401         }
3402
3403         i40e_fill_rx_flow_user_data(fsp, &userdef);
3404
3405         return 0;
3406 }
3407
3408 /**
3409  * i40e_get_rxnfc - command to get RX flow classification rules
3410  * @netdev: network interface device structure
3411  * @cmd: ethtool rxnfc command
3412  * @rule_locs: pointer to store rule data
3413  *
3414  * Returns Success if the command is supported.
3415  **/
3416 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3417                           u32 *rule_locs)
3418 {
3419         struct i40e_netdev_priv *np = netdev_priv(netdev);
3420         struct i40e_vsi *vsi = np->vsi;
3421         struct i40e_pf *pf = vsi->back;
3422         int ret = -EOPNOTSUPP;
3423
3424         switch (cmd->cmd) {
3425         case ETHTOOL_GRXRINGS:
3426                 cmd->data = vsi->rss_size;
3427                 ret = 0;
3428                 break;
3429         case ETHTOOL_GRXFH:
3430                 ret = i40e_get_rss_hash_opts(pf, cmd);
3431                 break;
3432         case ETHTOOL_GRXCLSRLCNT:
3433                 cmd->rule_cnt = pf->fdir_pf_active_filters;
3434                 /* report total rule count */
3435                 cmd->data = i40e_get_fd_cnt_all(pf);
3436                 ret = 0;
3437                 break;
3438         case ETHTOOL_GRXCLSRULE:
3439                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3440                 break;
3441         case ETHTOOL_GRXCLSRLALL:
3442                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3443                 break;
3444         default:
3445                 break;
3446         }
3447
3448         return ret;
3449 }
3450
3451 /**
3452  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3453  * @nfc: pointer to user request
3454  * @i_setc: bits currently set
3455  *
3456  * Returns value of bits to be set per user request
3457  **/
3458 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
3459 {
3460         u64 i_set = i_setc;
3461         u64 src_l3 = 0, dst_l3 = 0;
3462
3463         if (nfc->data & RXH_L4_B_0_1)
3464                 i_set |= I40E_L4_SRC_MASK;
3465         else
3466                 i_set &= ~I40E_L4_SRC_MASK;
3467         if (nfc->data & RXH_L4_B_2_3)
3468                 i_set |= I40E_L4_DST_MASK;
3469         else
3470                 i_set &= ~I40E_L4_DST_MASK;
3471
3472         if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3473                 src_l3 = I40E_L3_V6_SRC_MASK;
3474                 dst_l3 = I40E_L3_V6_DST_MASK;
3475         } else if (nfc->flow_type == TCP_V4_FLOW ||
3476                   nfc->flow_type == UDP_V4_FLOW) {
3477                 src_l3 = I40E_L3_SRC_MASK;
3478                 dst_l3 = I40E_L3_DST_MASK;
3479         } else {
3480                 /* Any other flow type are not supported here */
3481                 return i_set;
3482         }
3483
3484         if (nfc->data & RXH_IP_SRC)
3485                 i_set |= src_l3;
3486         else
3487                 i_set &= ~src_l3;
3488         if (nfc->data & RXH_IP_DST)
3489                 i_set |= dst_l3;
3490         else
3491                 i_set &= ~dst_l3;
3492
3493         return i_set;
3494 }
3495
3496 /**
3497  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3498  * @pf: pointer to the physical function struct
3499  * @nfc: ethtool rxnfc command
3500  *
3501  * Returns Success if the flow input set is supported.
3502  **/
3503 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3504 {
3505         struct i40e_hw *hw = &pf->hw;
3506         u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3507                    ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3508         u8 flow_pctype = 0;
3509         u64 i_set, i_setc;
3510
3511         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3512                 dev_err(&pf->pdev->dev,
3513                         "Change of RSS hash input set is not supported when MFP mode is enabled\n");
3514                 return -EOPNOTSUPP;
3515         }
3516
3517         /* RSS does not support anything other than hashing
3518          * to queues on src and dst IPs and ports
3519          */
3520         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3521                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
3522                 return -EINVAL;
3523
3524         switch (nfc->flow_type) {
3525         case TCP_V4_FLOW:
3526                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3527                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3528                         hena |=
3529                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3530                 break;
3531         case TCP_V6_FLOW:
3532                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3533                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3534                         hena |=
3535                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3536                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3537                         hena |=
3538                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3539                 break;
3540         case UDP_V4_FLOW:
3541                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3542                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3543                         hena |=
3544                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
3545                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3546
3547                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3548                 break;
3549         case UDP_V6_FLOW:
3550                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3551                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3552                         hena |=
3553                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
3554                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3555
3556                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3557                 break;
3558         case AH_ESP_V4_FLOW:
3559         case AH_V4_FLOW:
3560         case ESP_V4_FLOW:
3561         case SCTP_V4_FLOW:
3562                 if ((nfc->data & RXH_L4_B_0_1) ||
3563                     (nfc->data & RXH_L4_B_2_3))
3564                         return -EINVAL;
3565                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3566                 break;
3567         case AH_ESP_V6_FLOW:
3568         case AH_V6_FLOW:
3569         case ESP_V6_FLOW:
3570         case SCTP_V6_FLOW:
3571                 if ((nfc->data & RXH_L4_B_0_1) ||
3572                     (nfc->data & RXH_L4_B_2_3))
3573                         return -EINVAL;
3574                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3575                 break;
3576         case IPV4_FLOW:
3577                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3578                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3579                 break;
3580         case IPV6_FLOW:
3581                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3582                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3583                 break;
3584         default:
3585                 return -EINVAL;
3586         }
3587
3588         if (flow_pctype) {
3589                 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3590                                                flow_pctype)) |
3591                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3592                                                flow_pctype)) << 32);
3593                 i_set = i40e_get_rss_hash_bits(nfc, i_setc);
3594                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
3595                                   (u32)i_set);
3596                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
3597                                   (u32)(i_set >> 32));
3598                 hena |= BIT_ULL(flow_pctype);
3599         }
3600
3601         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
3602         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
3603         i40e_flush(hw);
3604
3605         return 0;
3606 }
3607
3608 /**
3609  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3610  * @vsi: Pointer to the targeted VSI
3611  * @input: The filter to update or NULL to indicate deletion
3612  * @sw_idx: Software index to the filter
3613  * @cmd: The command to get or set Rx flow classification rules
3614  *
3615  * This function updates (or deletes) a Flow Director entry from
3616  * the hlist of the corresponding PF
3617  *
3618  * Returns 0 on success
3619  **/
3620 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3621                                           struct i40e_fdir_filter *input,
3622                                           u16 sw_idx,
3623                                           struct ethtool_rxnfc *cmd)
3624 {
3625         struct i40e_fdir_filter *rule, *parent;
3626         struct i40e_pf *pf = vsi->back;
3627         struct hlist_node *node2;
3628         int err = -EINVAL;
3629
3630         parent = NULL;
3631         rule = NULL;
3632
3633         hlist_for_each_entry_safe(rule, node2,
3634                                   &pf->fdir_filter_list, fdir_node) {
3635                 /* hash found, or no matching entry */
3636                 if (rule->fd_id >= sw_idx)
3637                         break;
3638                 parent = rule;
3639         }
3640
3641         /* if there is an old rule occupying our place remove it */
3642         if (rule && (rule->fd_id == sw_idx)) {
3643                 /* Remove this rule, since we're either deleting it, or
3644                  * replacing it.
3645                  */
3646                 err = i40e_add_del_fdir(vsi, rule, false);
3647                 hlist_del(&rule->fdir_node);
3648                 kfree(rule);
3649                 pf->fdir_pf_active_filters--;
3650         }
3651
3652         /* If we weren't given an input, this is a delete, so just return the
3653          * error code indicating if there was an entry at the requested slot
3654          */
3655         if (!input)
3656                 return err;
3657
3658         /* Otherwise, install the new rule as requested */
3659         INIT_HLIST_NODE(&input->fdir_node);
3660
3661         /* add filter to the list */
3662         if (parent)
3663                 hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3664         else
3665                 hlist_add_head(&input->fdir_node,
3666                                &pf->fdir_filter_list);
3667
3668         /* update counts */
3669         pf->fdir_pf_active_filters++;
3670
3671         return 0;
3672 }
3673
3674 /**
3675  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3676  * @pf: pointer to PF structure
3677  *
3678  * This function searches the list of filters and determines which FLX_PIT
3679  * entries are still required. It will prune any entries which are no longer
3680  * in use after the deletion.
3681  **/
3682 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3683 {
3684         struct i40e_flex_pit *entry, *tmp;
3685         struct i40e_fdir_filter *rule;
3686
3687         /* First, we'll check the l3 table */
3688         list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3689                 bool found = false;
3690
3691                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3692                         if (rule->flow_type != IP_USER_FLOW)
3693                                 continue;
3694                         if (rule->flex_filter &&
3695                             rule->flex_offset == entry->src_offset) {
3696                                 found = true;
3697                                 break;
3698                         }
3699                 }
3700
3701                 /* If we didn't find the filter, then we can prune this entry
3702                  * from the list.
3703                  */
3704                 if (!found) {
3705                         list_del(&entry->list);
3706                         kfree(entry);
3707                 }
3708         }
3709
3710         /* Followed by the L4 table */
3711         list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3712                 bool found = false;
3713
3714                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3715                         /* Skip this filter if it's L3, since we already
3716                          * checked those in the above loop
3717                          */
3718                         if (rule->flow_type == IP_USER_FLOW)
3719                                 continue;
3720                         if (rule->flex_filter &&
3721                             rule->flex_offset == entry->src_offset) {
3722                                 found = true;
3723                                 break;
3724                         }
3725                 }
3726
3727                 /* If we didn't find the filter, then we can prune this entry
3728                  * from the list.
3729                  */
3730                 if (!found) {
3731                         list_del(&entry->list);
3732                         kfree(entry);
3733                 }
3734         }
3735 }
3736
3737 /**
3738  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3739  * @vsi: Pointer to the targeted VSI
3740  * @cmd: The command to get or set Rx flow classification rules
3741  *
3742  * The function removes a Flow Director filter entry from the
3743  * hlist of the corresponding PF
3744  *
3745  * Returns 0 on success
3746  */
3747 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3748                                struct ethtool_rxnfc *cmd)
3749 {
3750         struct ethtool_rx_flow_spec *fsp =
3751                 (struct ethtool_rx_flow_spec *)&cmd->fs;
3752         struct i40e_pf *pf = vsi->back;
3753         int ret = 0;
3754
3755         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3756             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3757                 return -EBUSY;
3758
3759         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3760                 return -EBUSY;
3761
3762         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
3763
3764         i40e_prune_flex_pit_list(pf);
3765
3766         i40e_fdir_check_and_reenable(pf);
3767         return ret;
3768 }
3769
3770 /**
3771  * i40e_unused_pit_index - Find an unused PIT index for given list
3772  * @pf: the PF data structure
3773  *
3774  * Find the first unused flexible PIT index entry. We search both the L3 and
3775  * L4 flexible PIT lists so that the returned index is unique and unused by
3776  * either currently programmed L3 or L4 filters. We use a bit field as storage
3777  * to track which indexes are already used.
3778  **/
3779 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3780 {
3781         unsigned long available_index = 0xFF;
3782         struct i40e_flex_pit *entry;
3783
3784         /* We need to make sure that the new index isn't in use by either L3
3785          * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3786          * L4 to use the same index.
3787          */
3788
3789         list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3790                 clear_bit(entry->pit_index, &available_index);
3791
3792         list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3793                 clear_bit(entry->pit_index, &available_index);
3794
3795         return find_first_bit(&available_index, 8);
3796 }
3797
3798 /**
3799  * i40e_find_flex_offset - Find an existing flex src_offset
3800  * @flex_pit_list: L3 or L4 flex PIT list
3801  * @src_offset: new src_offset to find
3802  *
3803  * Searches the flex_pit_list for an existing offset. If no offset is
3804  * currently programmed, then this will return an ERR_PTR if there is no space
3805  * to add a new offset, otherwise it returns NULL.
3806  **/
3807 static
3808 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3809                                             u16 src_offset)
3810 {
3811         struct i40e_flex_pit *entry;
3812         int size = 0;
3813
3814         /* Search for the src_offset first. If we find a matching entry
3815          * already programmed, we can simply re-use it.
3816          */
3817         list_for_each_entry(entry, flex_pit_list, list) {
3818                 size++;
3819                 if (entry->src_offset == src_offset)
3820                         return entry;
3821         }
3822
3823         /* If we haven't found an entry yet, then the provided src offset has
3824          * not yet been programmed. We will program the src offset later on,
3825          * but we need to indicate whether there is enough space to do so
3826          * here. We'll make use of ERR_PTR for this purpose.
3827          */
3828         if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3829                 return ERR_PTR(-ENOSPC);
3830
3831         return NULL;
3832 }
3833
3834 /**
3835  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3836  * @flex_pit_list: L3 or L4 flex PIT list
3837  * @src_offset: new src_offset to add
3838  * @pit_index: the PIT index to program
3839  *
3840  * This function programs the new src_offset to the list. It is expected that
3841  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3842  * that this offset is not programmed, and that the list has enough space to
3843  * store another offset.
3844  *
3845  * Returns 0 on success, and negative value on error.
3846  **/
3847 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3848                                 u16 src_offset,
3849                                 u8 pit_index)
3850 {
3851         struct i40e_flex_pit *new_pit, *entry;
3852
3853         new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3854         if (!new_pit)
3855                 return -ENOMEM;
3856
3857         new_pit->src_offset = src_offset;
3858         new_pit->pit_index = pit_index;
3859
3860         /* We need to insert this item such that the list is sorted by
3861          * src_offset in ascending order.
3862          */
3863         list_for_each_entry(entry, flex_pit_list, list) {
3864                 if (new_pit->src_offset < entry->src_offset) {
3865                         list_add_tail(&new_pit->list, &entry->list);
3866                         return 0;
3867                 }
3868
3869                 /* If we found an entry with our offset already programmed we
3870                  * can simply return here, after freeing the memory. However,
3871                  * if the pit_index does not match we need to report an error.
3872                  */
3873                 if (new_pit->src_offset == entry->src_offset) {
3874                         int err = 0;
3875
3876                         /* If the PIT index is not the same we can't re-use
3877                          * the entry, so we must report an error.
3878                          */
3879                         if (new_pit->pit_index != entry->pit_index)
3880                                 err = -EINVAL;
3881
3882                         kfree(new_pit);
3883                         return err;
3884                 }
3885         }
3886
3887         /* If we reached here, then we haven't yet added the item. This means
3888          * that we should add the item at the end of the list.
3889          */
3890         list_add_tail(&new_pit->list, flex_pit_list);
3891         return 0;
3892 }
3893
3894 /**
3895  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3896  * @pf: Pointer to the PF structure
3897  * @flex_pit_list: list of flexible src offsets in use
3898  * @flex_pit_start: index to first entry for this section of the table
3899  *
3900  * In order to handle flexible data, the hardware uses a table of values
3901  * called the FLX_PIT table. This table is used to indicate which sections of
3902  * the input correspond to what PIT index values. Unfortunately, hardware is
3903  * very restrictive about programming this table. Entries must be ordered by
3904  * src_offset in ascending order, without duplicates. Additionally, unused
3905  * entries must be set to the unused index value, and must have valid size and
3906  * length according to the src_offset ordering.
3907  *
3908  * This function will reprogram the FLX_PIT register from a book-keeping
3909  * structure that we guarantee is already ordered correctly, and has no more
3910  * than 3 entries.
3911  *
3912  * To make things easier, we only support flexible values of one word length,
3913  * rather than allowing variable length flexible values.
3914  **/
3915 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3916                                       struct list_head *flex_pit_list,
3917                                       int flex_pit_start)
3918 {
3919         struct i40e_flex_pit *entry = NULL;
3920         u16 last_offset = 0;
3921         int i = 0, j = 0;
3922
3923         /* First, loop over the list of flex PIT entries, and reprogram the
3924          * registers.
3925          */
3926         list_for_each_entry(entry, flex_pit_list, list) {
3927                 /* We have to be careful when programming values for the
3928                  * largest SRC_OFFSET value. It is possible that adding
3929                  * additional empty values at the end would overflow the space
3930                  * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3931                  * we check here and add the empty values prior to adding the
3932                  * largest value.
3933                  *
3934                  * To determine this, we will use a loop from i+1 to 3, which
3935                  * will determine whether the unused entries would have valid
3936                  * SRC_OFFSET. Note that there cannot be extra entries past
3937                  * this value, because the only valid values would have been
3938                  * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3939                  * have been added to the list in the first place.
3940                  */
3941                 for (j = i + 1; j < 3; j++) {
3942                         u16 offset = entry->src_offset + j;
3943                         int index = flex_pit_start + i;
3944                         u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3945                                                        1,
3946                                                        offset - 3);
3947
3948                         if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3949                                 i40e_write_rx_ctl(&pf->hw,
3950                                                   I40E_PRTQF_FLX_PIT(index),
3951                                                   value);
3952                                 i++;
3953                         }
3954                 }
3955
3956                 /* Now, we can program the actual value into the table */
3957                 i40e_write_rx_ctl(&pf->hw,
3958                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3959                                   I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3960                                                      1,
3961                                                      entry->src_offset));
3962                 i++;
3963         }
3964
3965         /* In order to program the last entries in the table, we need to
3966          * determine the valid offset. If the list is empty, we'll just start
3967          * with 0. Otherwise, we'll start with the last item offset and add 1.
3968          * This ensures that all entries have valid sizes. If we don't do this
3969          * correctly, the hardware will disable flexible field parsing.
3970          */
3971         if (!list_empty(flex_pit_list))
3972                 last_offset = list_prev_entry(entry, list)->src_offset + 1;
3973
3974         for (; i < 3; i++, last_offset++) {
3975                 i40e_write_rx_ctl(&pf->hw,
3976                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3977                                   I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3978                                                      1,
3979                                                      last_offset));
3980         }
3981 }
3982
3983 /**
3984  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3985  * @pf: pointer to the PF structure
3986  *
3987  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3988  * internal helper function for implementation details.
3989  **/
3990 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
3991 {
3992         __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
3993                                   I40E_FLEX_PIT_IDX_START_L3);
3994
3995         __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
3996                                   I40E_FLEX_PIT_IDX_START_L4);
3997
3998         /* We also need to program the L3 and L4 GLQF ORT register */
3999         i40e_write_rx_ctl(&pf->hw,
4000                           I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
4001                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
4002                                             3, 1));
4003
4004         i40e_write_rx_ctl(&pf->hw,
4005                           I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
4006                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
4007                                             3, 1));
4008 }
4009
4010 /**
4011  * i40e_flow_str - Converts a flow_type into a human readable string
4012  * @fsp: the flow specification
4013  *
4014  * Currently only flow types we support are included here, and the string
4015  * value attempts to match what ethtool would use to configure this flow type.
4016  **/
4017 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
4018 {
4019         switch (fsp->flow_type & ~FLOW_EXT) {
4020         case TCP_V4_FLOW:
4021                 return "tcp4";
4022         case UDP_V4_FLOW:
4023                 return "udp4";
4024         case SCTP_V4_FLOW:
4025                 return "sctp4";
4026         case IP_USER_FLOW:
4027                 return "ip4";
4028         case TCP_V6_FLOW:
4029                 return "tcp6";
4030         case UDP_V6_FLOW:
4031                 return "udp6";
4032         case SCTP_V6_FLOW:
4033                 return "sctp6";
4034         case IPV6_USER_FLOW:
4035                 return "ip6";
4036         default:
4037                 return "unknown";
4038         }
4039 }
4040
4041 /**
4042  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
4043  * @pit_index: PIT index to convert
4044  *
4045  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
4046  * of range.
4047  **/
4048 static u64 i40e_pit_index_to_mask(int pit_index)
4049 {
4050         switch (pit_index) {
4051         case 0:
4052                 return I40E_FLEX_50_MASK;
4053         case 1:
4054                 return I40E_FLEX_51_MASK;
4055         case 2:
4056                 return I40E_FLEX_52_MASK;
4057         case 3:
4058                 return I40E_FLEX_53_MASK;
4059         case 4:
4060                 return I40E_FLEX_54_MASK;
4061         case 5:
4062                 return I40E_FLEX_55_MASK;
4063         case 6:
4064                 return I40E_FLEX_56_MASK;
4065         case 7:
4066                 return I40E_FLEX_57_MASK;
4067         default:
4068                 return 0;
4069         }
4070 }
4071
4072 /**
4073  * i40e_print_input_set - Show changes between two input sets
4074  * @vsi: the vsi being configured
4075  * @old: the old input set
4076  * @new: the new input set
4077  *
4078  * Print the difference between old and new input sets by showing which series
4079  * of words are toggled on or off. Only displays the bits we actually support
4080  * changing.
4081  **/
4082 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
4083 {
4084         struct i40e_pf *pf = vsi->back;
4085         bool old_value, new_value;
4086         int i;
4087
4088         old_value = !!(old & I40E_L3_SRC_MASK);
4089         new_value = !!(new & I40E_L3_SRC_MASK);
4090         if (old_value != new_value)
4091                 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
4092                            old_value ? "ON" : "OFF",
4093                            new_value ? "ON" : "OFF");
4094
4095         old_value = !!(old & I40E_L3_DST_MASK);
4096         new_value = !!(new & I40E_L3_DST_MASK);
4097         if (old_value != new_value)
4098                 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
4099                            old_value ? "ON" : "OFF",
4100                            new_value ? "ON" : "OFF");
4101
4102         old_value = !!(old & I40E_L4_SRC_MASK);
4103         new_value = !!(new & I40E_L4_SRC_MASK);
4104         if (old_value != new_value)
4105                 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
4106                            old_value ? "ON" : "OFF",
4107                            new_value ? "ON" : "OFF");
4108
4109         old_value = !!(old & I40E_L4_DST_MASK);
4110         new_value = !!(new & I40E_L4_DST_MASK);
4111         if (old_value != new_value)
4112                 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
4113                            old_value ? "ON" : "OFF",
4114                            new_value ? "ON" : "OFF");
4115
4116         old_value = !!(old & I40E_VERIFY_TAG_MASK);
4117         new_value = !!(new & I40E_VERIFY_TAG_MASK);
4118         if (old_value != new_value)
4119                 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
4120                            old_value ? "ON" : "OFF",
4121                            new_value ? "ON" : "OFF");
4122
4123         /* Show change of flexible filter entries */
4124         for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
4125                 u64 flex_mask = i40e_pit_index_to_mask(i);
4126
4127                 old_value = !!(old & flex_mask);
4128                 new_value = !!(new & flex_mask);
4129                 if (old_value != new_value)
4130                         netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
4131                                    i,
4132                                    old_value ? "ON" : "OFF",
4133                                    new_value ? "ON" : "OFF");
4134         }
4135
4136         netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
4137                    old);
4138         netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
4139                    new);
4140 }
4141
4142 /**
4143  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
4144  * @vsi: pointer to the targeted VSI
4145  * @fsp: pointer to Rx flow specification
4146  * @userdef: userdefined data from flow specification
4147  *
4148  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
4149  * for partial matches exists with a few limitations. First, hardware only
4150  * supports masking by word boundary (2 bytes) and not per individual bit.
4151  * Second, hardware is limited to using one mask for a flow type and cannot
4152  * use a separate mask for each filter.
4153  *
4154  * To support these limitations, if we already have a configured filter for
4155  * the specified type, this function enforces that new filters of the type
4156  * match the configured input set. Otherwise, if we do not have a filter of
4157  * the specified type, we allow the input set to be updated to match the
4158  * desired filter.
4159  *
4160  * To help ensure that administrators understand why filters weren't displayed
4161  * as supported, we print a diagnostic message displaying how the input set
4162  * would change and warning to delete the preexisting filters if required.
4163  *
4164  * Returns 0 on successful input set match, and a negative return code on
4165  * failure.
4166  **/
4167 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
4168                                      struct ethtool_rx_flow_spec *fsp,
4169                                      struct i40e_rx_flow_userdef *userdef)
4170 {
4171         static const __be32 ipv6_full_mask[4] = {cpu_to_be32(0xffffffff),
4172                 cpu_to_be32(0xffffffff), cpu_to_be32(0xffffffff),
4173                 cpu_to_be32(0xffffffff)};
4174         struct ethtool_tcpip6_spec *tcp_ip6_spec;
4175         struct ethtool_usrip6_spec *usr_ip6_spec;
4176         struct ethtool_tcpip4_spec *tcp_ip4_spec;
4177         struct ethtool_usrip4_spec *usr_ip4_spec;
4178         struct i40e_pf *pf = vsi->back;
4179         u64 current_mask, new_mask;
4180         bool new_flex_offset = false;
4181         bool flex_l3 = false;
4182         u16 *fdir_filter_count;
4183         u16 index, src_offset = 0;
4184         u8 pit_index = 0;
4185         int err;
4186
4187         switch (fsp->flow_type & ~FLOW_EXT) {
4188         case SCTP_V4_FLOW:
4189                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
4190                 fdir_filter_count = &pf->fd_sctp4_filter_cnt;
4191                 break;
4192         case TCP_V4_FLOW:
4193                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
4194                 fdir_filter_count = &pf->fd_tcp4_filter_cnt;
4195                 break;
4196         case UDP_V4_FLOW:
4197                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
4198                 fdir_filter_count = &pf->fd_udp4_filter_cnt;
4199                 break;
4200         case SCTP_V6_FLOW:
4201                 index = I40E_FILTER_PCTYPE_NONF_IPV6_SCTP;
4202                 fdir_filter_count = &pf->fd_sctp6_filter_cnt;
4203                 break;
4204         case TCP_V6_FLOW:
4205                 index = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
4206                 fdir_filter_count = &pf->fd_tcp6_filter_cnt;
4207                 break;
4208         case UDP_V6_FLOW:
4209                 index = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
4210                 fdir_filter_count = &pf->fd_udp6_filter_cnt;
4211                 break;
4212         case IP_USER_FLOW:
4213                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
4214                 fdir_filter_count = &pf->fd_ip4_filter_cnt;
4215                 flex_l3 = true;
4216                 break;
4217         case IPV6_USER_FLOW:
4218                 index = I40E_FILTER_PCTYPE_NONF_IPV6_OTHER;
4219                 fdir_filter_count = &pf->fd_ip6_filter_cnt;
4220                 flex_l3 = true;
4221                 break;
4222         default:
4223                 return -EOPNOTSUPP;
4224         }
4225
4226         /* Read the current input set from register memory. */
4227         current_mask = i40e_read_fd_input_set(pf, index);
4228         new_mask = current_mask;
4229
4230         /* Determine, if any, the required changes to the input set in order
4231          * to support the provided mask.
4232          *
4233          * Hardware only supports masking at word (2 byte) granularity and does
4234          * not support full bitwise masking. This implementation simplifies
4235          * even further and only supports fully enabled or fully disabled
4236          * masks for each field, even though we could split the ip4src and
4237          * ip4dst fields.
4238          */
4239         switch (fsp->flow_type & ~FLOW_EXT) {
4240         case SCTP_V4_FLOW:
4241                 new_mask &= ~I40E_VERIFY_TAG_MASK;
4242                 fallthrough;
4243         case TCP_V4_FLOW:
4244         case UDP_V4_FLOW:
4245                 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
4246
4247                 /* IPv4 source address */
4248                 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4249                         new_mask |= I40E_L3_SRC_MASK;
4250                 else if (!tcp_ip4_spec->ip4src)
4251                         new_mask &= ~I40E_L3_SRC_MASK;
4252                 else
4253                         return -EOPNOTSUPP;
4254
4255                 /* IPv4 destination address */
4256                 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4257                         new_mask |= I40E_L3_DST_MASK;
4258                 else if (!tcp_ip4_spec->ip4dst)
4259                         new_mask &= ~I40E_L3_DST_MASK;
4260                 else
4261                         return -EOPNOTSUPP;
4262
4263                 /* L4 source port */
4264                 if (tcp_ip4_spec->psrc == htons(0xFFFF))
4265                         new_mask |= I40E_L4_SRC_MASK;
4266                 else if (!tcp_ip4_spec->psrc)
4267                         new_mask &= ~I40E_L4_SRC_MASK;
4268                 else
4269                         return -EOPNOTSUPP;
4270
4271                 /* L4 destination port */
4272                 if (tcp_ip4_spec->pdst == htons(0xFFFF))
4273                         new_mask |= I40E_L4_DST_MASK;
4274                 else if (!tcp_ip4_spec->pdst)
4275                         new_mask &= ~I40E_L4_DST_MASK;
4276                 else
4277                         return -EOPNOTSUPP;
4278
4279                 /* Filtering on Type of Service is not supported. */
4280                 if (tcp_ip4_spec->tos)
4281                         return -EOPNOTSUPP;
4282
4283                 break;
4284         case SCTP_V6_FLOW:
4285                 new_mask &= ~I40E_VERIFY_TAG_MASK;
4286                 fallthrough;
4287         case TCP_V6_FLOW:
4288         case UDP_V6_FLOW:
4289                 tcp_ip6_spec = &fsp->m_u.tcp_ip6_spec;
4290
4291                 /* Check if user provided IPv6 source address. */
4292                 if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6src,
4293                                     (struct in6_addr *)&ipv6_full_mask))
4294                         new_mask |= I40E_L3_V6_SRC_MASK;
4295                 else if (ipv6_addr_any((struct in6_addr *)
4296                                        &tcp_ip6_spec->ip6src))
4297                         new_mask &= ~I40E_L3_V6_SRC_MASK;
4298                 else
4299                         return -EOPNOTSUPP;
4300
4301                 /* Check if user provided destination address. */
4302                 if (ipv6_addr_equal((struct in6_addr *)&tcp_ip6_spec->ip6dst,
4303                                     (struct in6_addr *)&ipv6_full_mask))
4304                         new_mask |= I40E_L3_V6_DST_MASK;
4305                 else if (ipv6_addr_any((struct in6_addr *)
4306                                        &tcp_ip6_spec->ip6dst))
4307                         new_mask &= ~I40E_L3_V6_DST_MASK;
4308                 else
4309                         return -EOPNOTSUPP;
4310
4311                 /* L4 source port */
4312                 if (tcp_ip6_spec->psrc == htons(0xFFFF))
4313                         new_mask |= I40E_L4_SRC_MASK;
4314                 else if (!tcp_ip6_spec->psrc)
4315                         new_mask &= ~I40E_L4_SRC_MASK;
4316                 else
4317                         return -EOPNOTSUPP;
4318
4319                 /* L4 destination port */
4320                 if (tcp_ip6_spec->pdst == htons(0xFFFF))
4321                         new_mask |= I40E_L4_DST_MASK;
4322                 else if (!tcp_ip6_spec->pdst)
4323                         new_mask &= ~I40E_L4_DST_MASK;
4324                 else
4325                         return -EOPNOTSUPP;
4326
4327                 /* Filtering on Traffic Classes is not supported. */
4328                 if (tcp_ip6_spec->tclass)
4329                         return -EOPNOTSUPP;
4330                 break;
4331         case IP_USER_FLOW:
4332                 usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
4333
4334                 /* IPv4 source address */
4335                 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4336                         new_mask |= I40E_L3_SRC_MASK;
4337                 else if (!usr_ip4_spec->ip4src)
4338                         new_mask &= ~I40E_L3_SRC_MASK;
4339                 else
4340                         return -EOPNOTSUPP;
4341
4342                 /* IPv4 destination address */
4343                 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4344                         new_mask |= I40E_L3_DST_MASK;
4345                 else if (!usr_ip4_spec->ip4dst)
4346                         new_mask &= ~I40E_L3_DST_MASK;
4347                 else
4348                         return -EOPNOTSUPP;
4349
4350                 /* First 4 bytes of L4 header */
4351                 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4352                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4353                 else if (!usr_ip4_spec->l4_4_bytes)
4354                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4355                 else
4356                         return -EOPNOTSUPP;
4357
4358                 /* Filtering on Type of Service is not supported. */
4359                 if (usr_ip4_spec->tos)
4360                         return -EOPNOTSUPP;
4361
4362                 /* Filtering on IP version is not supported */
4363                 if (usr_ip4_spec->ip_ver)
4364                         return -EINVAL;
4365
4366                 /* Filtering on L4 protocol is not supported */
4367                 if (usr_ip4_spec->proto)
4368                         return -EINVAL;
4369
4370                 break;
4371         case IPV6_USER_FLOW:
4372                 usr_ip6_spec = &fsp->m_u.usr_ip6_spec;
4373
4374                 /* Check if user provided IPv6 source address. */
4375                 if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6src,
4376                                     (struct in6_addr *)&ipv6_full_mask))
4377                         new_mask |= I40E_L3_V6_SRC_MASK;
4378                 else if (ipv6_addr_any((struct in6_addr *)
4379                                        &usr_ip6_spec->ip6src))
4380                         new_mask &= ~I40E_L3_V6_SRC_MASK;
4381                 else
4382                         return -EOPNOTSUPP;
4383
4384                 /* Check if user provided destination address. */
4385                 if (ipv6_addr_equal((struct in6_addr *)&usr_ip6_spec->ip6dst,
4386                                     (struct in6_addr *)&ipv6_full_mask))
4387                         new_mask |= I40E_L3_V6_DST_MASK;
4388                 else if (ipv6_addr_any((struct in6_addr *)
4389                                        &usr_ip6_spec->ip6src))
4390                         new_mask &= ~I40E_L3_V6_DST_MASK;
4391                 else
4392                         return -EOPNOTSUPP;
4393
4394                 if (usr_ip6_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4395                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4396                 else if (!usr_ip6_spec->l4_4_bytes)
4397                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4398                 else
4399                         return -EOPNOTSUPP;
4400
4401                 /* Filtering on Traffic class is not supported. */
4402                 if (usr_ip6_spec->tclass)
4403                         return -EOPNOTSUPP;
4404
4405                 /* Filtering on L4 protocol is not supported */
4406                 if (usr_ip6_spec->l4_proto)
4407                         return -EINVAL;
4408
4409                 break;
4410         default:
4411                 return -EOPNOTSUPP;
4412         }
4413
4414         if (fsp->flow_type & FLOW_EXT) {
4415                 /* Allow only 802.1Q and no etype defined, as
4416                  * later it's modified to 0x8100
4417                  */
4418                 if (fsp->h_ext.vlan_etype != htons(ETH_P_8021Q) &&
4419                     fsp->h_ext.vlan_etype != 0)
4420                         return -EOPNOTSUPP;
4421                 if (fsp->m_ext.vlan_tci == htons(0xFFFF))
4422                         new_mask |= I40E_VLAN_SRC_MASK;
4423                 else
4424                         new_mask &= ~I40E_VLAN_SRC_MASK;
4425         }
4426
4427         /* First, clear all flexible filter entries */
4428         new_mask &= ~I40E_FLEX_INPUT_MASK;
4429
4430         /* If we have a flexible filter, try to add this offset to the correct
4431          * flexible filter PIT list. Once finished, we can update the mask.
4432          * If the src_offset changed, we will get a new mask value which will
4433          * trigger an input set change.
4434          */
4435         if (userdef->flex_filter) {
4436                 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
4437
4438                 /* Flexible offset must be even, since the flexible payload
4439                  * must be aligned on 2-byte boundary.
4440                  */
4441                 if (userdef->flex_offset & 0x1) {
4442                         dev_warn(&pf->pdev->dev,
4443                                  "Flexible data offset must be 2-byte aligned\n");
4444                         return -EINVAL;
4445                 }
4446
4447                 src_offset = userdef->flex_offset >> 1;
4448
4449                 /* FLX_PIT source offset value is only so large */
4450                 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
4451                         dev_warn(&pf->pdev->dev,
4452                                  "Flexible data must reside within first 64 bytes of the packet payload\n");
4453                         return -EINVAL;
4454                 }
4455
4456                 /* See if this offset has already been programmed. If we get
4457                  * an ERR_PTR, then the filter is not safe to add. Otherwise,
4458                  * if we get a NULL pointer, this means we will need to add
4459                  * the offset.
4460                  */
4461                 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
4462                                                  src_offset);
4463                 if (IS_ERR(flex_pit))
4464                         return PTR_ERR(flex_pit);
4465
4466                 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
4467                  * packet types, and thus we need to program both L3 and L4
4468                  * flexible values. These must have identical flexible index,
4469                  * as otherwise we can't correctly program the input set. So
4470                  * we'll find both an L3 and L4 index and make sure they are
4471                  * the same.
4472                  */
4473                 if (flex_l3) {
4474                         l3_flex_pit =
4475                                 i40e_find_flex_offset(&pf->l3_flex_pit_list,
4476                                                       src_offset);
4477                         if (IS_ERR(l3_flex_pit))
4478                                 return PTR_ERR(l3_flex_pit);
4479
4480                         if (flex_pit) {
4481                                 /* If we already had a matching L4 entry, we
4482                                  * need to make sure that the L3 entry we
4483                                  * obtained uses the same index.
4484                                  */
4485                                 if (l3_flex_pit) {
4486                                         if (l3_flex_pit->pit_index !=
4487                                             flex_pit->pit_index) {
4488                                                 return -EINVAL;
4489                                         }
4490                                 } else {
4491                                         new_flex_offset = true;
4492                                 }
4493                         } else {
4494                                 flex_pit = l3_flex_pit;
4495                         }
4496                 }
4497
4498                 /* If we didn't find an existing flex offset, we need to
4499                  * program a new one. However, we don't immediately program it
4500                  * here because we will wait to program until after we check
4501                  * that it is safe to change the input set.
4502                  */
4503                 if (!flex_pit) {
4504                         new_flex_offset = true;
4505                         pit_index = i40e_unused_pit_index(pf);
4506                 } else {
4507                         pit_index = flex_pit->pit_index;
4508                 }
4509
4510                 /* Update the mask with the new offset */
4511                 new_mask |= i40e_pit_index_to_mask(pit_index);
4512         }
4513
4514         /* If the mask and flexible filter offsets for this filter match the
4515          * currently programmed values we don't need any input set change, so
4516          * this filter is safe to install.
4517          */
4518         if (new_mask == current_mask && !new_flex_offset)
4519                 return 0;
4520
4521         netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4522                    i40e_flow_str(fsp));
4523         i40e_print_input_set(vsi, current_mask, new_mask);
4524         if (new_flex_offset) {
4525                 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4526                            pit_index, src_offset);
4527         }
4528
4529         /* Hardware input sets are global across multiple ports, so even the
4530          * main port cannot change them when in MFP mode as this would impact
4531          * any filters on the other ports.
4532          */
4533         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4534                 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4535                 return -EOPNOTSUPP;
4536         }
4537
4538         /* This filter requires us to update the input set. However, hardware
4539          * only supports one input set per flow type, and does not support
4540          * separate masks for each filter. This means that we can only support
4541          * a single mask for all filters of a specific type.
4542          *
4543          * If we have preexisting filters, they obviously depend on the
4544          * current programmed input set. Display a diagnostic message in this
4545          * case explaining why the filter could not be accepted.
4546          */
4547         if (*fdir_filter_count) {
4548                 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4549                           i40e_flow_str(fsp),
4550                           *fdir_filter_count);
4551                 return -EOPNOTSUPP;
4552         }
4553
4554         i40e_write_fd_input_set(pf, index, new_mask);
4555
4556         /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4557          * frames. If we're programming the input set for IPv4/Other, we also
4558          * need to program the IPv4/Fragmented input set. Since we don't have
4559          * separate support, we'll always assume and enforce that the two flow
4560          * types must have matching input sets.
4561          */
4562         if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4563                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
4564                                         new_mask);
4565
4566         /* Add the new offset and update table, if necessary */
4567         if (new_flex_offset) {
4568                 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
4569                                            pit_index);
4570                 if (err)
4571                         return err;
4572
4573                 if (flex_l3) {
4574                         err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
4575                                                    src_offset,
4576                                                    pit_index);
4577                         if (err)
4578                                 return err;
4579                 }
4580
4581                 i40e_reprogram_flex_pit(pf);
4582         }
4583
4584         return 0;
4585 }
4586
4587 /**
4588  * i40e_match_fdir_filter - Return true of two filters match
4589  * @a: pointer to filter struct
4590  * @b: pointer to filter struct
4591  *
4592  * Returns true if the two filters match exactly the same criteria. I.e. they
4593  * match the same flow type and have the same parameters. We don't need to
4594  * check any input-set since all filters of the same flow type must use the
4595  * same input set.
4596  **/
4597 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4598                                    struct i40e_fdir_filter *b)
4599 {
4600         /* The filters do not much if any of these criteria differ. */
4601         if (a->dst_ip != b->dst_ip ||
4602             a->src_ip != b->src_ip ||
4603             a->dst_port != b->dst_port ||
4604             a->src_port != b->src_port ||
4605             a->flow_type != b->flow_type ||
4606             a->ipl4_proto != b->ipl4_proto ||
4607             a->vlan_tag != b->vlan_tag ||
4608             a->vlan_etype != b->vlan_etype)
4609                 return false;
4610
4611         return true;
4612 }
4613
4614 /**
4615  * i40e_disallow_matching_filters - Check that new filters differ
4616  * @vsi: pointer to the targeted VSI
4617  * @input: new filter to check
4618  *
4619  * Due to hardware limitations, it is not possible for two filters that match
4620  * similar criteria to be programmed at the same time. This is true for a few
4621  * reasons:
4622  *
4623  * (a) all filters matching a particular flow type must use the same input
4624  * set, that is they must match the same criteria.
4625  * (b) different flow types will never match the same packet, as the flow type
4626  * is decided by hardware before checking which rules apply.
4627  * (c) hardware has no way to distinguish which order filters apply in.
4628  *
4629  * Due to this, we can't really support using the location data to order
4630  * filters in the hardware parsing. It is technically possible for the user to
4631  * request two filters matching the same criteria but which select different
4632  * queues. In this case, rather than keep both filters in the list, we reject
4633  * the 2nd filter when the user requests adding it.
4634  *
4635  * This avoids needing to track location for programming the filter to
4636  * hardware, and ensures that we avoid some strange scenarios involving
4637  * deleting filters which match the same criteria.
4638  **/
4639 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4640                                           struct i40e_fdir_filter *input)
4641 {
4642         struct i40e_pf *pf = vsi->back;
4643         struct i40e_fdir_filter *rule;
4644         struct hlist_node *node2;
4645
4646         /* Loop through every filter, and check that it doesn't match */
4647         hlist_for_each_entry_safe(rule, node2,
4648                                   &pf->fdir_filter_list, fdir_node) {
4649                 /* Don't check the filters match if they share the same fd_id,
4650                  * since the new filter is actually just updating the target
4651                  * of the old filter.
4652                  */
4653                 if (rule->fd_id == input->fd_id)
4654                         continue;
4655
4656                 /* If any filters match, then print a warning message to the
4657                  * kernel message buffer and bail out.
4658                  */
4659                 if (i40e_match_fdir_filter(rule, input)) {
4660                         dev_warn(&pf->pdev->dev,
4661                                  "Existing user defined filter %d already matches this flow.\n",
4662                                  rule->fd_id);
4663                         return -EINVAL;
4664                 }
4665         }
4666
4667         return 0;
4668 }
4669
4670 /**
4671  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4672  * @vsi: pointer to the targeted VSI
4673  * @cmd: command to get or set RX flow classification rules
4674  *
4675  * Add Flow Director filters for a specific flow spec based on their
4676  * protocol.  Returns 0 if the filters were successfully added.
4677  **/
4678 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4679                                  struct ethtool_rxnfc *cmd)
4680 {
4681         struct i40e_rx_flow_userdef userdef;
4682         struct ethtool_rx_flow_spec *fsp;
4683         struct i40e_fdir_filter *input;
4684         u16 dest_vsi = 0, q_index = 0;
4685         struct i40e_pf *pf;
4686         int ret = -EINVAL;
4687         u8 dest_ctl;
4688
4689         if (!vsi)
4690                 return -EINVAL;
4691         pf = vsi->back;
4692
4693         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4694                 return -EOPNOTSUPP;
4695
4696         if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4697                 return -ENOSPC;
4698
4699         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4700             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4701                 return -EBUSY;
4702
4703         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4704                 return -EBUSY;
4705
4706         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4707
4708         /* Parse the user-defined field */
4709         if (i40e_parse_rx_flow_user_data(fsp, &userdef))
4710                 return -EINVAL;
4711
4712         /* Extended MAC field is not supported */
4713         if (fsp->flow_type & FLOW_MAC_EXT)
4714                 return -EINVAL;
4715
4716         ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
4717         if (ret)
4718                 return ret;
4719
4720         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4721                               pf->hw.func_caps.fd_filters_guaranteed)) {
4722                 return -EINVAL;
4723         }
4724
4725         /* ring_cookie is either the drop index, or is a mask of the queue
4726          * index and VF id we wish to target.
4727          */
4728         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4729                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4730         } else {
4731                 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
4732                 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
4733
4734                 if (!vf) {
4735                         if (ring >= vsi->num_queue_pairs)
4736                                 return -EINVAL;
4737                         dest_vsi = vsi->id;
4738                 } else {
4739                         /* VFs are zero-indexed, so we subtract one here */
4740                         vf--;
4741
4742                         if (vf >= pf->num_alloc_vfs)
4743                                 return -EINVAL;
4744                         if (ring >= pf->vf[vf].num_queue_pairs)
4745                                 return -EINVAL;
4746                         dest_vsi = pf->vf[vf].lan_vsi_id;
4747                 }
4748                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4749                 q_index = ring;
4750         }
4751
4752         input = kzalloc(sizeof(*input), GFP_KERNEL);
4753
4754         if (!input)
4755                 return -ENOMEM;
4756
4757         input->fd_id = fsp->location;
4758         input->q_index = q_index;
4759         input->dest_vsi = dest_vsi;
4760         input->dest_ctl = dest_ctl;
4761         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4762         input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4763         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4764         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4765         input->flow_type = fsp->flow_type & ~FLOW_EXT;
4766
4767         input->vlan_etype = fsp->h_ext.vlan_etype;
4768         if (!fsp->m_ext.vlan_etype && fsp->h_ext.vlan_tci)
4769                 input->vlan_etype = cpu_to_be16(ETH_P_8021Q);
4770         if (fsp->m_ext.vlan_tci && input->vlan_etype)
4771                 input->vlan_tag = fsp->h_ext.vlan_tci;
4772         if (input->flow_type == IPV6_USER_FLOW ||
4773             input->flow_type == UDP_V6_FLOW ||
4774             input->flow_type == TCP_V6_FLOW ||
4775             input->flow_type == SCTP_V6_FLOW) {
4776                 /* Reverse the src and dest notion, since the HW expects them
4777                  * to be from Tx perspective where as the input from user is
4778                  * from Rx filter view.
4779                  */
4780                 input->ipl4_proto = fsp->h_u.usr_ip6_spec.l4_proto;
4781                 input->dst_port = fsp->h_u.tcp_ip6_spec.psrc;
4782                 input->src_port = fsp->h_u.tcp_ip6_spec.pdst;
4783                 memcpy(input->dst_ip6, fsp->h_u.ah_ip6_spec.ip6src,
4784                        sizeof(__be32) * 4);
4785                 memcpy(input->src_ip6, fsp->h_u.ah_ip6_spec.ip6dst,
4786                        sizeof(__be32) * 4);
4787         } else {
4788                 /* Reverse the src and dest notion, since the HW expects them
4789                  * to be from Tx perspective where as the input from user is
4790                  * from Rx filter view.
4791                  */
4792                 input->ipl4_proto = fsp->h_u.usr_ip4_spec.proto;
4793                 input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4794                 input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4795                 input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4796                 input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4797         }
4798
4799         if (userdef.flex_filter) {
4800                 input->flex_filter = true;
4801                 input->flex_word = cpu_to_be16(userdef.flex_word);
4802                 input->flex_offset = userdef.flex_offset;
4803         }
4804
4805         /* Avoid programming two filters with identical match criteria. */
4806         ret = i40e_disallow_matching_filters(vsi, input);
4807         if (ret)
4808                 goto free_filter_memory;
4809
4810         /* Add the input filter to the fdir_input_list, possibly replacing
4811          * a previous filter. Do not free the input structure after adding it
4812          * to the list as this would cause a use-after-free bug.
4813          */
4814         i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4815         ret = i40e_add_del_fdir(vsi, input, true);
4816         if (ret)
4817                 goto remove_sw_rule;
4818         return 0;
4819
4820 remove_sw_rule:
4821         hlist_del(&input->fdir_node);
4822         pf->fdir_pf_active_filters--;
4823 free_filter_memory:
4824         kfree(input);
4825         return ret;
4826 }
4827
4828 /**
4829  * i40e_set_rxnfc - command to set RX flow classification rules
4830  * @netdev: network interface device structure
4831  * @cmd: ethtool rxnfc command
4832  *
4833  * Returns Success if the command is supported.
4834  **/
4835 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4836 {
4837         struct i40e_netdev_priv *np = netdev_priv(netdev);
4838         struct i40e_vsi *vsi = np->vsi;
4839         struct i40e_pf *pf = vsi->back;
4840         int ret = -EOPNOTSUPP;
4841
4842         switch (cmd->cmd) {
4843         case ETHTOOL_SRXFH:
4844                 ret = i40e_set_rss_hash_opt(pf, cmd);
4845                 break;
4846         case ETHTOOL_SRXCLSRLINS:
4847                 ret = i40e_add_fdir_ethtool(vsi, cmd);
4848                 break;
4849         case ETHTOOL_SRXCLSRLDEL:
4850                 ret = i40e_del_fdir_entry(vsi, cmd);
4851                 break;
4852         default:
4853                 break;
4854         }
4855
4856         return ret;
4857 }
4858
4859 /**
4860  * i40e_max_channels - get Max number of combined channels supported
4861  * @vsi: vsi pointer
4862  **/
4863 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4864 {
4865         /* TODO: This code assumes DCB and FD is disabled for now. */
4866         return vsi->alloc_queue_pairs;
4867 }
4868
4869 /**
4870  * i40e_get_channels - Get the current channels enabled and max supported etc.
4871  * @dev: network interface device structure
4872  * @ch: ethtool channels structure
4873  *
4874  * We don't support separate tx and rx queues as channels. The other count
4875  * represents how many queues are being used for control. max_combined counts
4876  * how many queue pairs we can support. They may not be mapped 1 to 1 with
4877  * q_vectors since we support a lot more queue pairs than q_vectors.
4878  **/
4879 static void i40e_get_channels(struct net_device *dev,
4880                               struct ethtool_channels *ch)
4881 {
4882         struct i40e_netdev_priv *np = netdev_priv(dev);
4883         struct i40e_vsi *vsi = np->vsi;
4884         struct i40e_pf *pf = vsi->back;
4885
4886         /* report maximum channels */
4887         ch->max_combined = i40e_max_channels(vsi);
4888
4889         /* report info for other vector */
4890         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4891         ch->max_other = ch->other_count;
4892
4893         /* Note: This code assumes DCB is disabled for now. */
4894         ch->combined_count = vsi->num_queue_pairs;
4895 }
4896
4897 /**
4898  * i40e_set_channels - Set the new channels count.
4899  * @dev: network interface device structure
4900  * @ch: ethtool channels structure
4901  *
4902  * The new channels count may not be the same as requested by the user
4903  * since it gets rounded down to a power of 2 value.
4904  **/
4905 static int i40e_set_channels(struct net_device *dev,
4906                              struct ethtool_channels *ch)
4907 {
4908         const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4909         struct i40e_netdev_priv *np = netdev_priv(dev);
4910         unsigned int count = ch->combined_count;
4911         struct i40e_vsi *vsi = np->vsi;
4912         struct i40e_pf *pf = vsi->back;
4913         struct i40e_fdir_filter *rule;
4914         struct hlist_node *node2;
4915         int new_count;
4916         int err = 0;
4917
4918         /* We do not support setting channels for any other VSI at present */
4919         if (vsi->type != I40E_VSI_MAIN)
4920                 return -EINVAL;
4921
4922         /* We do not support setting channels via ethtool when TCs are
4923          * configured through mqprio
4924          */
4925         if (pf->flags & I40E_FLAG_TC_MQPRIO)
4926                 return -EINVAL;
4927
4928         /* verify they are not requesting separate vectors */
4929         if (!count || ch->rx_count || ch->tx_count)
4930                 return -EINVAL;
4931
4932         /* verify other_count has not changed */
4933         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4934                 return -EINVAL;
4935
4936         /* verify the number of channels does not exceed hardware limits */
4937         if (count > i40e_max_channels(vsi))
4938                 return -EINVAL;
4939
4940         /* verify that the number of channels does not invalidate any current
4941          * flow director rules
4942          */
4943         hlist_for_each_entry_safe(rule, node2,
4944                                   &pf->fdir_filter_list, fdir_node) {
4945                 if (rule->dest_ctl != drop && count <= rule->q_index) {
4946                         dev_warn(&pf->pdev->dev,
4947                                  "Existing user defined filter %d assigns flow to queue %d\n",
4948                                  rule->fd_id, rule->q_index);
4949                         err = -EINVAL;
4950                 }
4951         }
4952
4953         if (err) {
4954                 dev_err(&pf->pdev->dev,
4955                         "Existing filter rules must be deleted to reduce combined channel count to %d\n",
4956                         count);
4957                 return err;
4958         }
4959
4960         /* update feature limits from largest to smallest supported values */
4961         /* TODO: Flow director limit, DCB etc */
4962
4963         /* use rss_reconfig to rebuild with new queue count and update traffic
4964          * class queue mapping
4965          */
4966         new_count = i40e_reconfig_rss_queues(pf, count);
4967         if (new_count > 0)
4968                 return 0;
4969         else
4970                 return -EINVAL;
4971 }
4972
4973 /**
4974  * i40e_get_rxfh_key_size - get the RSS hash key size
4975  * @netdev: network interface device structure
4976  *
4977  * Returns the table size.
4978  **/
4979 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
4980 {
4981         return I40E_HKEY_ARRAY_SIZE;
4982 }
4983
4984 /**
4985  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
4986  * @netdev: network interface device structure
4987  *
4988  * Returns the table size.
4989  **/
4990 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
4991 {
4992         return I40E_HLUT_ARRAY_SIZE;
4993 }
4994
4995 /**
4996  * i40e_get_rxfh - get the rx flow hash indirection table
4997  * @netdev: network interface device structure
4998  * @indir: indirection table
4999  * @key: hash key
5000  * @hfunc: hash function
5001  *
5002  * Reads the indirection table directly from the hardware. Returns 0 on
5003  * success.
5004  **/
5005 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
5006                          u8 *hfunc)
5007 {
5008         struct i40e_netdev_priv *np = netdev_priv(netdev);
5009         struct i40e_vsi *vsi = np->vsi;
5010         u8 *lut, *seed = NULL;
5011         int ret;
5012         u16 i;
5013
5014         if (hfunc)
5015                 *hfunc = ETH_RSS_HASH_TOP;
5016
5017         if (!indir)
5018                 return 0;
5019
5020         seed = key;
5021         lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5022         if (!lut)
5023                 return -ENOMEM;
5024         ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
5025         if (ret)
5026                 goto out;
5027         for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5028                 indir[i] = (u32)(lut[i]);
5029
5030 out:
5031         kfree(lut);
5032
5033         return ret;
5034 }
5035
5036 /**
5037  * i40e_set_rxfh - set the rx flow hash indirection table
5038  * @netdev: network interface device structure
5039  * @indir: indirection table
5040  * @key: hash key
5041  * @hfunc: hash function to use
5042  *
5043  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
5044  * returns 0 after programming the table.
5045  **/
5046 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
5047                          const u8 *key, const u8 hfunc)
5048 {
5049         struct i40e_netdev_priv *np = netdev_priv(netdev);
5050         struct i40e_vsi *vsi = np->vsi;
5051         struct i40e_pf *pf = vsi->back;
5052         u8 *seed = NULL;
5053         u16 i;
5054
5055         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
5056                 return -EOPNOTSUPP;
5057
5058         if (key) {
5059                 if (!vsi->rss_hkey_user) {
5060                         vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
5061                                                      GFP_KERNEL);
5062                         if (!vsi->rss_hkey_user)
5063                                 return -ENOMEM;
5064                 }
5065                 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
5066                 seed = vsi->rss_hkey_user;
5067         }
5068         if (!vsi->rss_lut_user) {
5069                 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
5070                 if (!vsi->rss_lut_user)
5071                         return -ENOMEM;
5072         }
5073
5074         /* Each 32 bits pointed by 'indir' is stored with a lut entry */
5075         if (indir)
5076                 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
5077                         vsi->rss_lut_user[i] = (u8)(indir[i]);
5078         else
5079                 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
5080                                   vsi->rss_size);
5081
5082         return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
5083                                I40E_HLUT_ARRAY_SIZE);
5084 }
5085
5086 /**
5087  * i40e_get_priv_flags - report device private flags
5088  * @dev: network interface device structure
5089  *
5090  * The get string set count and the string set should be matched for each
5091  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
5092  * array.
5093  *
5094  * Returns a u32 bitmap of flags.
5095  **/
5096 static u32 i40e_get_priv_flags(struct net_device *dev)
5097 {
5098         struct i40e_netdev_priv *np = netdev_priv(dev);
5099         struct i40e_vsi *vsi = np->vsi;
5100         struct i40e_pf *pf = vsi->back;
5101         u32 i, j, ret_flags = 0;
5102
5103         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5104                 const struct i40e_priv_flags *priv_flags;
5105
5106                 priv_flags = &i40e_gstrings_priv_flags[i];
5107
5108                 if (priv_flags->flag & pf->flags)
5109                         ret_flags |= BIT(i);
5110         }
5111
5112         if (pf->hw.pf_id != 0)
5113                 return ret_flags;
5114
5115         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5116                 const struct i40e_priv_flags *priv_flags;
5117
5118                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
5119
5120                 if (priv_flags->flag & pf->flags)
5121                         ret_flags |= BIT(i + j);
5122         }
5123
5124         return ret_flags;
5125 }
5126
5127 /**
5128  * i40e_set_priv_flags - set private flags
5129  * @dev: network interface device structure
5130  * @flags: bit flags to be set
5131  **/
5132 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
5133 {
5134         struct i40e_netdev_priv *np = netdev_priv(dev);
5135         u64 orig_flags, new_flags, changed_flags;
5136         enum i40e_admin_queue_err adq_err;
5137         struct i40e_vsi *vsi = np->vsi;
5138         struct i40e_pf *pf = vsi->back;
5139         u32 reset_needed = 0;
5140         i40e_status status;
5141         u32 i, j;
5142
5143         orig_flags = READ_ONCE(pf->flags);
5144         new_flags = orig_flags;
5145
5146         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
5147                 const struct i40e_priv_flags *priv_flags;
5148
5149                 priv_flags = &i40e_gstrings_priv_flags[i];
5150
5151                 if (flags & BIT(i))
5152                         new_flags |= priv_flags->flag;
5153                 else
5154                         new_flags &= ~(priv_flags->flag);
5155
5156                 /* If this is a read-only flag, it can't be changed */
5157                 if (priv_flags->read_only &&
5158                     ((orig_flags ^ new_flags) & ~BIT(i)))
5159                         return -EOPNOTSUPP;
5160         }
5161
5162         if (pf->hw.pf_id != 0)
5163                 goto flags_complete;
5164
5165         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
5166                 const struct i40e_priv_flags *priv_flags;
5167
5168                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
5169
5170                 if (flags & BIT(i + j))
5171                         new_flags |= priv_flags->flag;
5172                 else
5173                         new_flags &= ~(priv_flags->flag);
5174
5175                 /* If this is a read-only flag, it can't be changed */
5176                 if (priv_flags->read_only &&
5177                     ((orig_flags ^ new_flags) & ~BIT(i)))
5178                         return -EOPNOTSUPP;
5179         }
5180
5181 flags_complete:
5182         changed_flags = orig_flags ^ new_flags;
5183
5184         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP)
5185                 reset_needed = I40E_PF_RESET_AND_REBUILD_FLAG;
5186         if (changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
5187             I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED))
5188                 reset_needed = BIT(__I40E_PF_RESET_REQUESTED);
5189
5190         /* Before we finalize any flag changes, we need to perform some
5191          * checks to ensure that the changes are supported and safe.
5192          */
5193
5194         /* ATR eviction is not supported on all devices */
5195         if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
5196             !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
5197                 return -EOPNOTSUPP;
5198
5199         /* If the driver detected FW LLDP was disabled on init, this flag could
5200          * be set, however we do not support _changing_ the flag:
5201          * - on XL710 if NPAR is enabled or FW API version < 1.7
5202          * - on X722 with FW API version < 1.6
5203          * There are situations where older FW versions/NPAR enabled PFs could
5204          * disable LLDP, however we _must_ not allow the user to enable/disable
5205          * LLDP with this flag on unsupported FW versions.
5206          */
5207         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5208                 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
5209                         dev_warn(&pf->pdev->dev,
5210                                  "Device does not support changing FW LLDP\n");
5211                         return -EOPNOTSUPP;
5212                 }
5213         }
5214
5215         if (changed_flags & I40E_FLAG_RS_FEC &&
5216             pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5217             pf->hw.device_id != I40E_DEV_ID_25G_B) {
5218                 dev_warn(&pf->pdev->dev,
5219                          "Device does not support changing FEC configuration\n");
5220                 return -EOPNOTSUPP;
5221         }
5222
5223         if (changed_flags & I40E_FLAG_BASE_R_FEC &&
5224             pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
5225             pf->hw.device_id != I40E_DEV_ID_25G_B &&
5226             pf->hw.device_id != I40E_DEV_ID_KX_X722) {
5227                 dev_warn(&pf->pdev->dev,
5228                          "Device does not support changing FEC configuration\n");
5229                 return -EOPNOTSUPP;
5230         }
5231
5232         /* Process any additional changes needed as a result of flag changes.
5233          * The changed_flags value reflects the list of bits that were
5234          * changed in the code above.
5235          */
5236
5237         /* Flush current ATR settings if ATR was disabled */
5238         if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
5239             !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5240                 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
5241                 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
5242         }
5243
5244         if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
5245                 u16 sw_flags = 0, valid_flags = 0;
5246                 int ret;
5247
5248                 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
5249                         sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5250                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
5251                 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
5252                                                 0, NULL);
5253                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
5254                         dev_info(&pf->pdev->dev,
5255                                  "couldn't set switch config bits, err %s aq_err %s\n",
5256                                  i40e_stat_str(&pf->hw, ret),
5257                                  i40e_aq_str(&pf->hw,
5258                                              pf->hw.aq.asq_last_status));
5259                         /* not a fatal problem, just keep going */
5260                 }
5261         }
5262
5263         if ((changed_flags & I40E_FLAG_RS_FEC) ||
5264             (changed_flags & I40E_FLAG_BASE_R_FEC)) {
5265                 u8 fec_cfg = 0;
5266
5267                 if (new_flags & I40E_FLAG_RS_FEC &&
5268                     new_flags & I40E_FLAG_BASE_R_FEC) {
5269                         fec_cfg = I40E_AQ_SET_FEC_AUTO;
5270                 } else if (new_flags & I40E_FLAG_RS_FEC) {
5271                         fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
5272                                    I40E_AQ_SET_FEC_ABILITY_RS);
5273                 } else if (new_flags & I40E_FLAG_BASE_R_FEC) {
5274                         fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
5275                                    I40E_AQ_SET_FEC_ABILITY_KR);
5276                 }
5277                 if (i40e_set_fec_cfg(dev, fec_cfg))
5278                         dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
5279         }
5280
5281         if ((changed_flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5282             (orig_flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)) {
5283                 dev_err(&pf->pdev->dev,
5284                         "Setting link-down-on-close not supported on this port (because total-port-shutdown is enabled)\n");
5285                 return -EOPNOTSUPP;
5286         }
5287
5288         if ((changed_flags & new_flags &
5289              I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
5290             (new_flags & I40E_FLAG_MFP_ENABLED))
5291                 dev_warn(&pf->pdev->dev,
5292                          "Turning on link-down-on-close flag may affect other partitions\n");
5293
5294         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5295                 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5296 #ifdef CONFIG_I40E_DCB
5297                         i40e_dcb_sw_default_config(pf);
5298 #endif /* CONFIG_I40E_DCB */
5299                         i40e_aq_cfg_lldp_mib_change_event(&pf->hw, false, NULL);
5300                         i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
5301                 } else {
5302                         status = i40e_aq_start_lldp(&pf->hw, false, NULL);
5303                         if (status) {
5304                                 adq_err = pf->hw.aq.asq_last_status;
5305                                 switch (adq_err) {
5306                                 case I40E_AQ_RC_EEXIST:
5307                                         dev_warn(&pf->pdev->dev,
5308                                                  "FW LLDP agent is already running\n");
5309                                         reset_needed = 0;
5310                                         break;
5311                                 case I40E_AQ_RC_EPERM:
5312                                         dev_warn(&pf->pdev->dev,
5313                                                  "Device configuration forbids SW from starting the LLDP agent.\n");
5314                                         return -EINVAL;
5315                                 case I40E_AQ_RC_EAGAIN:
5316                                         dev_warn(&pf->pdev->dev,
5317                                                  "Stop FW LLDP agent command is still being processed, please try again in a second.\n");
5318                                         return -EBUSY;
5319                                 default:
5320                                         dev_warn(&pf->pdev->dev,
5321                                                  "Starting FW LLDP agent failed: error: %s, %s\n",
5322                                                  i40e_stat_str(&pf->hw,
5323                                                                status),
5324                                                  i40e_aq_str(&pf->hw,
5325                                                              adq_err));
5326                                         return -EINVAL;
5327                                 }
5328                         }
5329                 }
5330         }
5331
5332         /* Now that we've checked to ensure that the new flags are valid, load
5333          * them into place. Since we only modify flags either (a) during
5334          * initialization or (b) while holding the RTNL lock, we don't need
5335          * anything fancy here.
5336          */
5337         pf->flags = new_flags;
5338
5339         /* Issue reset to cause things to take effect, as additional bits
5340          * are added we will need to create a mask of bits requiring reset
5341          */
5342         if (reset_needed)
5343                 i40e_do_reset(pf, reset_needed, true);
5344
5345         return 0;
5346 }
5347
5348 /**
5349  * i40e_get_module_info - get (Q)SFP+ module type info
5350  * @netdev: network interface device structure
5351  * @modinfo: module EEPROM size and layout information structure
5352  **/
5353 static int i40e_get_module_info(struct net_device *netdev,
5354                                 struct ethtool_modinfo *modinfo)
5355 {
5356         struct i40e_netdev_priv *np = netdev_priv(netdev);
5357         struct i40e_vsi *vsi = np->vsi;
5358         struct i40e_pf *pf = vsi->back;
5359         struct i40e_hw *hw = &pf->hw;
5360         u32 sff8472_comp = 0;
5361         u32 sff8472_swap = 0;
5362         u32 sff8636_rev = 0;
5363         i40e_status status;
5364         u32 type = 0;
5365
5366         /* Check if firmware supports reading module EEPROM. */
5367         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
5368                 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
5369                 return -EINVAL;
5370         }
5371
5372         status = i40e_update_link_info(hw);
5373         if (status)
5374                 return -EIO;
5375
5376         if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
5377                 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
5378                 return -EINVAL;
5379         }
5380
5381         type = hw->phy.link_info.module_type[0];
5382
5383         switch (type) {
5384         case I40E_MODULE_TYPE_SFP:
5385                 status = i40e_aq_get_phy_register(hw,
5386                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5387                                 I40E_I2C_EEPROM_DEV_ADDR, true,
5388                                 I40E_MODULE_SFF_8472_COMP,
5389                                 &sff8472_comp, NULL);
5390                 if (status)
5391                         return -EIO;
5392
5393                 status = i40e_aq_get_phy_register(hw,
5394                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5395                                 I40E_I2C_EEPROM_DEV_ADDR, true,
5396                                 I40E_MODULE_SFF_8472_SWAP,
5397                                 &sff8472_swap, NULL);
5398                 if (status)
5399                         return -EIO;
5400
5401                 /* Check if the module requires address swap to access
5402                  * the other EEPROM memory page.
5403                  */
5404                 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
5405                         netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
5406                         modinfo->type = ETH_MODULE_SFF_8079;
5407                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5408                 } else if (sff8472_comp == 0x00) {
5409                         /* Module is not SFF-8472 compliant */
5410                         modinfo->type = ETH_MODULE_SFF_8079;
5411                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5412                 } else if (!(sff8472_swap & I40E_MODULE_SFF_DDM_IMPLEMENTED)) {
5413                         /* Module is SFF-8472 compliant but doesn't implement
5414                          * Digital Diagnostic Monitoring (DDM).
5415                          */
5416                         modinfo->type = ETH_MODULE_SFF_8079;
5417                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5418                 } else {
5419                         modinfo->type = ETH_MODULE_SFF_8472;
5420                         modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
5421                 }
5422                 break;
5423         case I40E_MODULE_TYPE_QSFP_PLUS:
5424                 /* Read from memory page 0. */
5425                 status = i40e_aq_get_phy_register(hw,
5426                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5427                                 0, true,
5428                                 I40E_MODULE_REVISION_ADDR,
5429                                 &sff8636_rev, NULL);
5430                 if (status)
5431                         return -EIO;
5432                 /* Determine revision compliance byte */
5433                 if (sff8636_rev > 0x02) {
5434                         /* Module is SFF-8636 compliant */
5435                         modinfo->type = ETH_MODULE_SFF_8636;
5436                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5437                 } else {
5438                         modinfo->type = ETH_MODULE_SFF_8436;
5439                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5440                 }
5441                 break;
5442         case I40E_MODULE_TYPE_QSFP28:
5443                 modinfo->type = ETH_MODULE_SFF_8636;
5444                 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5445                 break;
5446         default:
5447                 netdev_err(vsi->netdev, "Module type unrecognized\n");
5448                 return -EINVAL;
5449         }
5450         return 0;
5451 }
5452
5453 /**
5454  * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
5455  * @netdev: network interface device structure
5456  * @ee: EEPROM dump request structure
5457  * @data: buffer to be filled with EEPROM contents
5458  **/
5459 static int i40e_get_module_eeprom(struct net_device *netdev,
5460                                   struct ethtool_eeprom *ee,
5461                                   u8 *data)
5462 {
5463         struct i40e_netdev_priv *np = netdev_priv(netdev);
5464         struct i40e_vsi *vsi = np->vsi;
5465         struct i40e_pf *pf = vsi->back;
5466         struct i40e_hw *hw = &pf->hw;
5467         bool is_sfp = false;
5468         i40e_status status;
5469         u32 value = 0;
5470         int i;
5471
5472         if (!ee || !ee->len || !data)
5473                 return -EINVAL;
5474
5475         if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
5476                 is_sfp = true;
5477
5478         for (i = 0; i < ee->len; i++) {
5479                 u32 offset = i + ee->offset;
5480                 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
5481
5482                 /* Check if we need to access the other memory page */
5483                 if (is_sfp) {
5484                         if (offset >= ETH_MODULE_SFF_8079_LEN) {
5485                                 offset -= ETH_MODULE_SFF_8079_LEN;
5486                                 addr = I40E_I2C_EEPROM_DEV_ADDR2;
5487                         }
5488                 } else {
5489                         while (offset >= ETH_MODULE_SFF_8436_LEN) {
5490                                 /* Compute memory page number and offset. */
5491                                 offset -= ETH_MODULE_SFF_8436_LEN / 2;
5492                                 addr++;
5493                         }
5494                 }
5495
5496                 status = i40e_aq_get_phy_register(hw,
5497                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5498                                 addr, true, offset, &value, NULL);
5499                 if (status)
5500                         return -EIO;
5501                 data[i] = value;
5502         }
5503         return 0;
5504 }
5505
5506 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
5507 {
5508         struct i40e_netdev_priv *np = netdev_priv(netdev);
5509         struct i40e_aq_get_phy_abilities_resp phy_cfg;
5510         enum i40e_status_code status = 0;
5511         struct i40e_vsi *vsi = np->vsi;
5512         struct i40e_pf *pf = vsi->back;
5513         struct i40e_hw *hw = &pf->hw;
5514
5515         /* Get initial PHY capabilities */
5516         status = i40e_aq_get_phy_capabilities(hw, false, true, &phy_cfg, NULL);
5517         if (status)
5518                 return -EAGAIN;
5519
5520         /* Check whether NIC configuration is compatible with Energy Efficient
5521          * Ethernet (EEE) mode.
5522          */
5523         if (phy_cfg.eee_capability == 0)
5524                 return -EOPNOTSUPP;
5525
5526         edata->supported = SUPPORTED_Autoneg;
5527         edata->lp_advertised = edata->supported;
5528
5529         /* Get current configuration */
5530         status = i40e_aq_get_phy_capabilities(hw, false, false, &phy_cfg, NULL);
5531         if (status)
5532                 return -EAGAIN;
5533
5534         edata->advertised = phy_cfg.eee_capability ? SUPPORTED_Autoneg : 0U;
5535         edata->eee_enabled = !!edata->advertised;
5536         edata->tx_lpi_enabled = pf->stats.tx_lpi_status;
5537
5538         edata->eee_active = pf->stats.tx_lpi_status && pf->stats.rx_lpi_status;
5539
5540         return 0;
5541 }
5542
5543 static int i40e_is_eee_param_supported(struct net_device *netdev,
5544                                        struct ethtool_eee *edata)
5545 {
5546         struct i40e_netdev_priv *np = netdev_priv(netdev);
5547         struct i40e_vsi *vsi = np->vsi;
5548         struct i40e_pf *pf = vsi->back;
5549         struct i40e_ethtool_not_used {
5550                 u32 value;
5551                 const char *name;
5552         } param[] = {
5553                 {edata->advertised & ~SUPPORTED_Autoneg, "advertise"},
5554                 {edata->tx_lpi_timer, "tx-timer"},
5555                 {edata->tx_lpi_enabled != pf->stats.tx_lpi_status, "tx-lpi"}
5556         };
5557         int i;
5558
5559         for (i = 0; i < ARRAY_SIZE(param); i++) {
5560                 if (param[i].value) {
5561                         netdev_info(netdev,
5562                                     "EEE setting %s not supported\n",
5563                                     param[i].name);
5564                         return -EOPNOTSUPP;
5565                 }
5566         }
5567
5568         return 0;
5569 }
5570
5571 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
5572 {
5573         struct i40e_netdev_priv *np = netdev_priv(netdev);
5574         struct i40e_aq_get_phy_abilities_resp abilities;
5575         enum i40e_status_code status = I40E_SUCCESS;
5576         struct i40e_aq_set_phy_config config;
5577         struct i40e_vsi *vsi = np->vsi;
5578         struct i40e_pf *pf = vsi->back;
5579         struct i40e_hw *hw = &pf->hw;
5580         __le16 eee_capability;
5581
5582         /* Deny parameters we don't support */
5583         if (i40e_is_eee_param_supported(netdev, edata))
5584                 return -EOPNOTSUPP;
5585
5586         /* Get initial PHY capabilities */
5587         status = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
5588                                               NULL);
5589         if (status)
5590                 return -EAGAIN;
5591
5592         /* Check whether NIC configuration is compatible with Energy Efficient
5593          * Ethernet (EEE) mode.
5594          */
5595         if (abilities.eee_capability == 0)
5596                 return -EOPNOTSUPP;
5597
5598         /* Cache initial EEE capability */
5599         eee_capability = abilities.eee_capability;
5600
5601         /* Get current PHY configuration */
5602         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
5603                                               NULL);
5604         if (status)
5605                 return -EAGAIN;
5606
5607         /* Cache current PHY configuration */
5608         config.phy_type = abilities.phy_type;
5609         config.phy_type_ext = abilities.phy_type_ext;
5610         config.link_speed = abilities.link_speed;
5611         config.abilities = abilities.abilities |
5612                            I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
5613         config.eeer = abilities.eeer_val;
5614         config.low_power_ctrl = abilities.d3_lpan;
5615         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
5616                             I40E_AQ_PHY_FEC_CONFIG_MASK;
5617
5618         /* Set desired EEE state */
5619         if (edata->eee_enabled) {
5620                 config.eee_capability = eee_capability;
5621                 config.eeer |= cpu_to_le32(I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5622         } else {
5623                 config.eee_capability = 0;
5624                 config.eeer &= cpu_to_le32(~I40E_PRTPM_EEER_TX_LPI_EN_MASK);
5625         }
5626
5627         /* Apply modified PHY configuration */
5628         status = i40e_aq_set_phy_config(hw, &config, NULL);
5629         if (status)
5630                 return -EAGAIN;
5631
5632         return 0;
5633 }
5634
5635 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
5636         .get_drvinfo            = i40e_get_drvinfo,
5637         .set_eeprom             = i40e_set_eeprom,
5638         .get_eeprom_len         = i40e_get_eeprom_len,
5639         .get_eeprom             = i40e_get_eeprom,
5640 };
5641
5642 static const struct ethtool_ops i40e_ethtool_ops = {
5643         .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
5644                                      ETHTOOL_COALESCE_MAX_FRAMES_IRQ |
5645                                      ETHTOOL_COALESCE_USE_ADAPTIVE |
5646                                      ETHTOOL_COALESCE_RX_USECS_HIGH |
5647                                      ETHTOOL_COALESCE_TX_USECS_HIGH,
5648         .get_drvinfo            = i40e_get_drvinfo,
5649         .get_regs_len           = i40e_get_regs_len,
5650         .get_regs               = i40e_get_regs,
5651         .nway_reset             = i40e_nway_reset,
5652         .get_link               = ethtool_op_get_link,
5653         .get_wol                = i40e_get_wol,
5654         .set_wol                = i40e_set_wol,
5655         .set_eeprom             = i40e_set_eeprom,
5656         .get_eeprom_len         = i40e_get_eeprom_len,
5657         .get_eeprom             = i40e_get_eeprom,
5658         .get_ringparam          = i40e_get_ringparam,
5659         .set_ringparam          = i40e_set_ringparam,
5660         .get_pauseparam         = i40e_get_pauseparam,
5661         .set_pauseparam         = i40e_set_pauseparam,
5662         .get_msglevel           = i40e_get_msglevel,
5663         .set_msglevel           = i40e_set_msglevel,
5664         .get_rxnfc              = i40e_get_rxnfc,
5665         .set_rxnfc              = i40e_set_rxnfc,
5666         .self_test              = i40e_diag_test,
5667         .get_strings            = i40e_get_strings,
5668         .get_eee                = i40e_get_eee,
5669         .set_eee                = i40e_set_eee,
5670         .set_phys_id            = i40e_set_phys_id,
5671         .get_sset_count         = i40e_get_sset_count,
5672         .get_ethtool_stats      = i40e_get_ethtool_stats,
5673         .get_coalesce           = i40e_get_coalesce,
5674         .set_coalesce           = i40e_set_coalesce,
5675         .get_rxfh_key_size      = i40e_get_rxfh_key_size,
5676         .get_rxfh_indir_size    = i40e_get_rxfh_indir_size,
5677         .get_rxfh               = i40e_get_rxfh,
5678         .set_rxfh               = i40e_set_rxfh,
5679         .get_channels           = i40e_get_channels,
5680         .set_channels           = i40e_set_channels,
5681         .get_module_info        = i40e_get_module_info,
5682         .get_module_eeprom      = i40e_get_module_eeprom,
5683         .get_ts_info            = i40e_get_ts_info,
5684         .get_priv_flags         = i40e_get_priv_flags,
5685         .set_priv_flags         = i40e_set_priv_flags,
5686         .get_per_queue_coalesce = i40e_get_per_queue_coalesce,
5687         .set_per_queue_coalesce = i40e_set_per_queue_coalesce,
5688         .get_link_ksettings     = i40e_get_link_ksettings,
5689         .set_link_ksettings     = i40e_set_link_ksettings,
5690         .get_fecparam = i40e_get_fec_param,
5691         .set_fecparam = i40e_set_fec_param,
5692         .flash_device = i40e_ddp_flash,
5693 };
5694
5695 void i40e_set_ethtool_ops(struct net_device *netdev)
5696 {
5697         struct i40e_netdev_priv *np = netdev_priv(netdev);
5698         struct i40e_pf          *pf = np->vsi->back;
5699
5700         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
5701                 netdev->ethtool_ops = &i40e_ethtool_ops;
5702         else
5703                 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
5704 }