1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
4 /* ethtool support for iavf */
7 #include <linux/uaccess.h>
9 /* ethtool statistics helpers */
12 * struct iavf_stats - definition for an ethtool statistic
13 * @stat_string: statistic name to display in ethtool -S output
14 * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
15 * @stat_offset: offsetof() the stat from a base pointer
17 * This structure defines a statistic to be added to the ethtool stats buffer.
18 * It defines a statistic as offset from a common base pointer. Stats should
19 * be defined in constant arrays using the IAVF_STAT macro, with every element
20 * of the array using the same _type for calculating the sizeof_stat and
23 * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
24 * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
25 * the iavf_add_ethtool_stat() helper function.
27 * The @stat_string is interpreted as a format string, allowing formatted
28 * values to be inserted while looping over multiple structures for a given
29 * statistics array. Thus, every statistic string in an array should have the
30 * same type and number of format specifiers, to be formatted by variadic
31 * arguments to the iavf_add_stat_string() helper function.
34 char stat_string[ETH_GSTRING_LEN];
39 /* Helper macro to define an iavf_stat structure with proper size and type.
40 * Use this when defining constant statistics arrays. Note that @_type expects
41 * only a type name and is used multiple times.
43 #define IAVF_STAT(_type, _name, _stat) { \
44 .stat_string = _name, \
45 .sizeof_stat = sizeof_field(_type, _stat), \
46 .stat_offset = offsetof(_type, _stat) \
49 /* Helper macro for defining some statistics related to queues */
50 #define IAVF_QUEUE_STAT(_name, _stat) \
51 IAVF_STAT(struct iavf_ring, _name, _stat)
53 /* Stats associated with a Tx or Rx ring */
54 static const struct iavf_stats iavf_gstrings_queue_stats[] = {
55 IAVF_QUEUE_STAT("%s-%u.packets", stats.packets),
56 IAVF_QUEUE_STAT("%s-%u.bytes", stats.bytes),
60 * iavf_add_one_ethtool_stat - copy the stat into the supplied buffer
61 * @data: location to store the stat value
62 * @pointer: basis for where to copy from
63 * @stat: the stat definition
65 * Copies the stat data defined by the pointer and stat structure pair into
66 * the memory supplied as data. Used to implement iavf_add_ethtool_stats and
67 * iavf_add_queue_stats. If the pointer is null, data will be zero'd.
70 iavf_add_one_ethtool_stat(u64 *data, void *pointer,
71 const struct iavf_stats *stat)
76 /* ensure that the ethtool data buffer is zero'd for any stats
77 * which don't have a valid pointer.
83 p = (char *)pointer + stat->stat_offset;
84 switch (stat->sizeof_stat) {
98 WARN_ONCE(1, "unexpected stat size for %s",
105 * __iavf_add_ethtool_stats - copy stats into the ethtool supplied buffer
106 * @data: ethtool stats buffer
107 * @pointer: location to copy stats from
108 * @stats: array of stats to copy
109 * @size: the size of the stats definition
111 * Copy the stats defined by the stats array using the pointer as a base into
112 * the data buffer supplied by ethtool. Updates the data pointer to point to
113 * the next empty location for successive calls to __iavf_add_ethtool_stats.
114 * If pointer is null, set the data values to zero and update the pointer to
118 __iavf_add_ethtool_stats(u64 **data, void *pointer,
119 const struct iavf_stats stats[],
120 const unsigned int size)
124 for (i = 0; i < size; i++)
125 iavf_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
129 * iavf_add_ethtool_stats - copy stats into ethtool supplied buffer
130 * @data: ethtool stats buffer
131 * @pointer: location where stats are stored
132 * @stats: static const array of stat definitions
134 * Macro to ease the use of __iavf_add_ethtool_stats by taking a static
135 * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
136 * ensuring that we pass the size associated with the given stats array.
138 * The parameter @stats is evaluated twice, so parameters with side effects
141 #define iavf_add_ethtool_stats(data, pointer, stats) \
142 __iavf_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
145 * iavf_add_queue_stats - copy queue statistics into supplied buffer
146 * @data: ethtool stats buffer
147 * @ring: the ring to copy
149 * Queue statistics must be copied while protected by
150 * u64_stats_fetch_begin, so we can't directly use iavf_add_ethtool_stats.
151 * Assumes that queue stats are defined in iavf_gstrings_queue_stats. If the
152 * ring pointer is null, zero out the queue stat values and update the data
153 * pointer. Otherwise safely copy the stats from the ring into the supplied
154 * buffer and update the data pointer when finished.
156 * This function expects to be called while under rcu_read_lock().
159 iavf_add_queue_stats(u64 **data, struct iavf_ring *ring)
161 const unsigned int size = ARRAY_SIZE(iavf_gstrings_queue_stats);
162 const struct iavf_stats *stats = iavf_gstrings_queue_stats;
166 /* To avoid invalid statistics values, ensure that we keep retrying
167 * the copy until we get a consistent value according to
168 * u64_stats_fetch_retry. But first, make sure our ring is
169 * non-null before attempting to access its syncp.
172 start = !ring ? 0 : u64_stats_fetch_begin(&ring->syncp);
173 for (i = 0; i < size; i++)
174 iavf_add_one_ethtool_stat(&(*data)[i], ring, &stats[i]);
175 } while (ring && u64_stats_fetch_retry(&ring->syncp, start));
177 /* Once we successfully copy the stats in, update the data pointer */
182 * __iavf_add_stat_strings - copy stat strings into ethtool buffer
183 * @p: ethtool supplied buffer
184 * @stats: stat definitions array
185 * @size: size of the stats array
187 * Format and copy the strings described by stats into the buffer pointed at
190 static void __iavf_add_stat_strings(u8 **p, const struct iavf_stats stats[],
191 const unsigned int size, ...)
195 for (i = 0; i < size; i++) {
198 va_start(args, size);
199 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
200 *p += ETH_GSTRING_LEN;
206 * iavf_add_stat_strings - copy stat strings into ethtool buffer
207 * @p: ethtool supplied buffer
208 * @stats: stat definitions array
210 * Format and copy the strings described by the const static stats value into
211 * the buffer pointed at by p.
213 * The parameter @stats is evaluated twice, so parameters with side effects
214 * should be avoided. Additionally, stats must be an array such that
215 * ARRAY_SIZE can be called on it.
217 #define iavf_add_stat_strings(p, stats, ...) \
218 __iavf_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
220 #define VF_STAT(_name, _stat) \
221 IAVF_STAT(struct iavf_adapter, _name, _stat)
223 static const struct iavf_stats iavf_gstrings_stats[] = {
224 VF_STAT("rx_bytes", current_stats.rx_bytes),
225 VF_STAT("rx_unicast", current_stats.rx_unicast),
226 VF_STAT("rx_multicast", current_stats.rx_multicast),
227 VF_STAT("rx_broadcast", current_stats.rx_broadcast),
228 VF_STAT("rx_discards", current_stats.rx_discards),
229 VF_STAT("rx_unknown_protocol", current_stats.rx_unknown_protocol),
230 VF_STAT("tx_bytes", current_stats.tx_bytes),
231 VF_STAT("tx_unicast", current_stats.tx_unicast),
232 VF_STAT("tx_multicast", current_stats.tx_multicast),
233 VF_STAT("tx_broadcast", current_stats.tx_broadcast),
234 VF_STAT("tx_discards", current_stats.tx_discards),
235 VF_STAT("tx_errors", current_stats.tx_errors),
238 #define IAVF_STATS_LEN ARRAY_SIZE(iavf_gstrings_stats)
240 #define IAVF_QUEUE_STATS_LEN ARRAY_SIZE(iavf_gstrings_queue_stats)
242 /* For now we have one and only one private flag and it is only defined
243 * when we have support for the SKIP_CPU_SYNC DMA attribute. Instead
244 * of leaving all this code sitting around empty we will strip it unless
245 * our one private flag is actually available.
247 struct iavf_priv_flags {
248 char flag_string[ETH_GSTRING_LEN];
253 #define IAVF_PRIV_FLAG(_name, _flag, _read_only) { \
254 .flag_string = _name, \
256 .read_only = _read_only, \
259 static const struct iavf_priv_flags iavf_gstrings_priv_flags[] = {
260 IAVF_PRIV_FLAG("legacy-rx", IAVF_FLAG_LEGACY_RX, 0),
263 #define IAVF_PRIV_FLAGS_STR_LEN ARRAY_SIZE(iavf_gstrings_priv_flags)
266 * iavf_get_link_ksettings - Get Link Speed and Duplex settings
267 * @netdev: network interface device structure
268 * @cmd: ethtool command
270 * Reports speed/duplex settings. Because this is a VF, we don't know what
271 * kind of link we really have, so we fake it.
273 static int iavf_get_link_ksettings(struct net_device *netdev,
274 struct ethtool_link_ksettings *cmd)
276 struct iavf_adapter *adapter = netdev_priv(netdev);
278 ethtool_link_ksettings_zero_link_mode(cmd, supported);
279 cmd->base.autoneg = AUTONEG_DISABLE;
280 cmd->base.port = PORT_NONE;
281 cmd->base.duplex = DUPLEX_FULL;
283 if (ADV_LINK_SUPPORT(adapter)) {
284 if (adapter->link_speed_mbps &&
285 adapter->link_speed_mbps < U32_MAX)
286 cmd->base.speed = adapter->link_speed_mbps;
288 cmd->base.speed = SPEED_UNKNOWN;
293 switch (adapter->link_speed) {
294 case VIRTCHNL_LINK_SPEED_40GB:
295 cmd->base.speed = SPEED_40000;
297 case VIRTCHNL_LINK_SPEED_25GB:
298 cmd->base.speed = SPEED_25000;
300 case VIRTCHNL_LINK_SPEED_20GB:
301 cmd->base.speed = SPEED_20000;
303 case VIRTCHNL_LINK_SPEED_10GB:
304 cmd->base.speed = SPEED_10000;
306 case VIRTCHNL_LINK_SPEED_5GB:
307 cmd->base.speed = SPEED_5000;
309 case VIRTCHNL_LINK_SPEED_2_5GB:
310 cmd->base.speed = SPEED_2500;
312 case VIRTCHNL_LINK_SPEED_1GB:
313 cmd->base.speed = SPEED_1000;
315 case VIRTCHNL_LINK_SPEED_100MB:
316 cmd->base.speed = SPEED_100;
326 * iavf_get_sset_count - Get length of string set
327 * @netdev: network interface device structure
328 * @sset: id of string set
330 * Reports size of various string tables.
332 static int iavf_get_sset_count(struct net_device *netdev, int sset)
334 /* Report the maximum number queues, even if not every queue is
335 * currently configured. Since allocation of queues is in pairs,
336 * use netdev->real_num_tx_queues * 2. The real_num_tx_queues is set
337 * at device creation and never changes.
340 if (sset == ETH_SS_STATS)
341 return IAVF_STATS_LEN +
342 (IAVF_QUEUE_STATS_LEN * 2 *
343 netdev->real_num_tx_queues);
344 else if (sset == ETH_SS_PRIV_FLAGS)
345 return IAVF_PRIV_FLAGS_STR_LEN;
351 * iavf_get_ethtool_stats - report device statistics
352 * @netdev: network interface device structure
353 * @stats: ethtool statistics structure
354 * @data: pointer to data buffer
356 * All statistics are added to the data buffer as an array of u64.
358 static void iavf_get_ethtool_stats(struct net_device *netdev,
359 struct ethtool_stats *stats, u64 *data)
361 struct iavf_adapter *adapter = netdev_priv(netdev);
364 /* Explicitly request stats refresh */
365 iavf_schedule_request_stats(adapter);
367 iavf_add_ethtool_stats(&data, adapter, iavf_gstrings_stats);
370 /* As num_active_queues describe both tx and rx queues, we can use
371 * it to iterate over rings' stats.
373 for (i = 0; i < adapter->num_active_queues; i++) {
374 struct iavf_ring *ring;
377 ring = &adapter->tx_rings[i];
378 iavf_add_queue_stats(&data, ring);
381 ring = &adapter->rx_rings[i];
382 iavf_add_queue_stats(&data, ring);
388 * iavf_get_priv_flag_strings - Get private flag strings
389 * @netdev: network interface device structure
390 * @data: buffer for string data
392 * Builds the private flags string table
394 static void iavf_get_priv_flag_strings(struct net_device *netdev, u8 *data)
398 for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
399 snprintf(data, ETH_GSTRING_LEN, "%s",
400 iavf_gstrings_priv_flags[i].flag_string);
401 data += ETH_GSTRING_LEN;
406 * iavf_get_stat_strings - Get stat strings
407 * @netdev: network interface device structure
408 * @data: buffer for string data
410 * Builds the statistics string table
412 static void iavf_get_stat_strings(struct net_device *netdev, u8 *data)
416 iavf_add_stat_strings(&data, iavf_gstrings_stats);
418 /* Queues are always allocated in pairs, so we just use
419 * real_num_tx_queues for both Tx and Rx queues.
421 for (i = 0; i < netdev->real_num_tx_queues; i++) {
422 iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
424 iavf_add_stat_strings(&data, iavf_gstrings_queue_stats,
430 * iavf_get_strings - Get string set
431 * @netdev: network interface device structure
432 * @sset: id of string set
433 * @data: buffer for string data
435 * Builds string tables for various string sets
437 static void iavf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
441 iavf_get_stat_strings(netdev, data);
443 case ETH_SS_PRIV_FLAGS:
444 iavf_get_priv_flag_strings(netdev, data);
452 * iavf_get_priv_flags - report device private flags
453 * @netdev: network interface device structure
455 * The get string set count and the string set should be matched for each
456 * flag returned. Add new strings for each flag to the iavf_gstrings_priv_flags
459 * Returns a u32 bitmap of flags.
461 static u32 iavf_get_priv_flags(struct net_device *netdev)
463 struct iavf_adapter *adapter = netdev_priv(netdev);
464 u32 i, ret_flags = 0;
466 for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
467 const struct iavf_priv_flags *priv_flags;
469 priv_flags = &iavf_gstrings_priv_flags[i];
471 if (priv_flags->flag & adapter->flags)
479 * iavf_set_priv_flags - set private flags
480 * @netdev: network interface device structure
481 * @flags: bit flags to be set
483 static int iavf_set_priv_flags(struct net_device *netdev, u32 flags)
485 struct iavf_adapter *adapter = netdev_priv(netdev);
486 u32 orig_flags, new_flags, changed_flags;
490 orig_flags = READ_ONCE(adapter->flags);
491 new_flags = orig_flags;
493 for (i = 0; i < IAVF_PRIV_FLAGS_STR_LEN; i++) {
494 const struct iavf_priv_flags *priv_flags;
496 priv_flags = &iavf_gstrings_priv_flags[i];
499 new_flags |= priv_flags->flag;
501 new_flags &= ~(priv_flags->flag);
503 if (priv_flags->read_only &&
504 ((orig_flags ^ new_flags) & ~BIT(i)))
508 /* Before we finalize any flag changes, any checks which we need to
509 * perform to determine if the new flags will be supported should go
513 /* Compare and exchange the new flags into place. If we failed, that
514 * is if cmpxchg returns anything but the old value, this means
515 * something else must have modified the flags variable since we
516 * copied it. We'll just punt with an error and log something in the
519 if (cmpxchg(&adapter->flags, orig_flags, new_flags) != orig_flags) {
520 dev_warn(&adapter->pdev->dev,
521 "Unable to update adapter->flags as it was modified by another thread...\n");
525 changed_flags = orig_flags ^ new_flags;
527 /* Process any additional changes needed as a result of flag changes.
528 * The changed_flags value reflects the list of bits that were changed
532 /* issue a reset to force legacy-rx change to take effect */
533 if (changed_flags & IAVF_FLAG_LEGACY_RX) {
534 if (netif_running(netdev)) {
535 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
536 ret = iavf_wait_for_reset(adapter);
538 netdev_warn(netdev, "Changing private flags timeout or interrupted waiting for reset");
546 * iavf_get_msglevel - Get debug message level
547 * @netdev: network interface device structure
549 * Returns current debug message level.
551 static u32 iavf_get_msglevel(struct net_device *netdev)
553 struct iavf_adapter *adapter = netdev_priv(netdev);
555 return adapter->msg_enable;
559 * iavf_set_msglevel - Set debug message level
560 * @netdev: network interface device structure
561 * @data: message level
563 * Set current debug message level. Higher values cause the driver to
566 static void iavf_set_msglevel(struct net_device *netdev, u32 data)
568 struct iavf_adapter *adapter = netdev_priv(netdev);
570 if (IAVF_DEBUG_USER & data)
571 adapter->hw.debug_mask = data;
572 adapter->msg_enable = data;
576 * iavf_get_drvinfo - Get driver info
577 * @netdev: network interface device structure
578 * @drvinfo: ethool driver info structure
580 * Returns information about the driver and device for display to the user.
582 static void iavf_get_drvinfo(struct net_device *netdev,
583 struct ethtool_drvinfo *drvinfo)
585 struct iavf_adapter *adapter = netdev_priv(netdev);
587 strscpy(drvinfo->driver, iavf_driver_name, 32);
588 strscpy(drvinfo->fw_version, "N/A", 4);
589 strscpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
590 drvinfo->n_priv_flags = IAVF_PRIV_FLAGS_STR_LEN;
594 * iavf_get_ringparam - Get ring parameters
595 * @netdev: network interface device structure
596 * @ring: ethtool ringparam structure
597 * @kernel_ring: ethtool extenal ringparam structure
598 * @extack: netlink extended ACK report struct
600 * Returns current ring parameters. TX and RX rings are reported separately,
601 * but the number of rings is not reported.
603 static void iavf_get_ringparam(struct net_device *netdev,
604 struct ethtool_ringparam *ring,
605 struct kernel_ethtool_ringparam *kernel_ring,
606 struct netlink_ext_ack *extack)
608 struct iavf_adapter *adapter = netdev_priv(netdev);
610 ring->rx_max_pending = IAVF_MAX_RXD;
611 ring->tx_max_pending = IAVF_MAX_TXD;
612 ring->rx_pending = adapter->rx_desc_count;
613 ring->tx_pending = adapter->tx_desc_count;
617 * iavf_set_ringparam - Set ring parameters
618 * @netdev: network interface device structure
619 * @ring: ethtool ringparam structure
620 * @kernel_ring: ethtool external ringparam structure
621 * @extack: netlink extended ACK report struct
623 * Sets ring parameters. TX and RX rings are controlled separately, but the
624 * number of rings is not specified, so all rings get the same settings.
626 static int iavf_set_ringparam(struct net_device *netdev,
627 struct ethtool_ringparam *ring,
628 struct kernel_ethtool_ringparam *kernel_ring,
629 struct netlink_ext_ack *extack)
631 struct iavf_adapter *adapter = netdev_priv(netdev);
632 u32 new_rx_count, new_tx_count;
635 if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
638 if (ring->tx_pending > IAVF_MAX_TXD ||
639 ring->tx_pending < IAVF_MIN_TXD ||
640 ring->rx_pending > IAVF_MAX_RXD ||
641 ring->rx_pending < IAVF_MIN_RXD) {
642 netdev_err(netdev, "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d] (increment %d)\n",
643 ring->tx_pending, ring->rx_pending, IAVF_MIN_TXD,
644 IAVF_MAX_RXD, IAVF_REQ_DESCRIPTOR_MULTIPLE);
648 new_tx_count = ALIGN(ring->tx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE);
649 if (new_tx_count != ring->tx_pending)
650 netdev_info(netdev, "Requested Tx descriptor count rounded up to %d\n",
653 new_rx_count = ALIGN(ring->rx_pending, IAVF_REQ_DESCRIPTOR_MULTIPLE);
654 if (new_rx_count != ring->rx_pending)
655 netdev_info(netdev, "Requested Rx descriptor count rounded up to %d\n",
658 /* if nothing to do return success */
659 if ((new_tx_count == adapter->tx_desc_count) &&
660 (new_rx_count == adapter->rx_desc_count)) {
661 netdev_dbg(netdev, "Nothing to change, descriptor count is same as requested\n");
665 if (new_tx_count != adapter->tx_desc_count) {
666 netdev_dbg(netdev, "Changing Tx descriptor count from %d to %d\n",
667 adapter->tx_desc_count, new_tx_count);
668 adapter->tx_desc_count = new_tx_count;
671 if (new_rx_count != adapter->rx_desc_count) {
672 netdev_dbg(netdev, "Changing Rx descriptor count from %d to %d\n",
673 adapter->rx_desc_count, new_rx_count);
674 adapter->rx_desc_count = new_rx_count;
677 if (netif_running(netdev)) {
678 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
679 ret = iavf_wait_for_reset(adapter);
681 netdev_warn(netdev, "Changing ring parameters timeout or interrupted waiting for reset");
688 * __iavf_get_coalesce - get per-queue coalesce settings
689 * @netdev: the netdev to check
690 * @ec: ethtool coalesce data structure
691 * @queue: which queue to pick
693 * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
694 * are per queue. If queue is <0 then we default to queue 0 as the
695 * representative value.
697 static int __iavf_get_coalesce(struct net_device *netdev,
698 struct ethtool_coalesce *ec, int queue)
700 struct iavf_adapter *adapter = netdev_priv(netdev);
701 struct iavf_ring *rx_ring, *tx_ring;
703 /* Rx and Tx usecs per queue value. If user doesn't specify the
704 * queue, return queue 0's value to represent.
708 else if (queue >= adapter->num_active_queues)
711 rx_ring = &adapter->rx_rings[queue];
712 tx_ring = &adapter->tx_rings[queue];
714 if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
715 ec->use_adaptive_rx_coalesce = 1;
717 if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
718 ec->use_adaptive_tx_coalesce = 1;
720 ec->rx_coalesce_usecs = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
721 ec->tx_coalesce_usecs = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
727 * iavf_get_coalesce - Get interrupt coalescing settings
728 * @netdev: network interface device structure
729 * @ec: ethtool coalesce structure
730 * @kernel_coal: ethtool CQE mode setting structure
731 * @extack: extack for reporting error messages
733 * Returns current coalescing settings. This is referred to elsewhere in the
734 * driver as Interrupt Throttle Rate, as this is how the hardware describes
735 * this functionality. Note that if per-queue settings have been modified this
736 * only represents the settings of queue 0.
738 static int iavf_get_coalesce(struct net_device *netdev,
739 struct ethtool_coalesce *ec,
740 struct kernel_ethtool_coalesce *kernel_coal,
741 struct netlink_ext_ack *extack)
743 return __iavf_get_coalesce(netdev, ec, -1);
747 * iavf_get_per_queue_coalesce - get coalesce values for specific queue
748 * @netdev: netdev to read
749 * @ec: coalesce settings from ethtool
750 * @queue: the queue to read
752 * Read specific queue's coalesce settings.
754 static int iavf_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
755 struct ethtool_coalesce *ec)
757 return __iavf_get_coalesce(netdev, ec, queue);
761 * iavf_set_itr_per_queue - set ITR values for specific queue
762 * @adapter: the VF adapter struct to set values for
763 * @ec: coalesce settings from ethtool
764 * @queue: the queue to modify
766 * Change the ITR settings for a specific queue.
768 static int iavf_set_itr_per_queue(struct iavf_adapter *adapter,
769 struct ethtool_coalesce *ec, int queue)
771 struct iavf_ring *rx_ring = &adapter->rx_rings[queue];
772 struct iavf_ring *tx_ring = &adapter->tx_rings[queue];
773 struct iavf_q_vector *q_vector;
776 itr_setting = rx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
778 if (ec->rx_coalesce_usecs != itr_setting &&
779 ec->use_adaptive_rx_coalesce) {
780 netif_info(adapter, drv, adapter->netdev,
781 "Rx interrupt throttling cannot be changed if adaptive-rx is enabled\n");
785 itr_setting = tx_ring->itr_setting & ~IAVF_ITR_DYNAMIC;
787 if (ec->tx_coalesce_usecs != itr_setting &&
788 ec->use_adaptive_tx_coalesce) {
789 netif_info(adapter, drv, adapter->netdev,
790 "Tx interrupt throttling cannot be changed if adaptive-tx is enabled\n");
794 rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
795 tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
797 rx_ring->itr_setting |= IAVF_ITR_DYNAMIC;
798 if (!ec->use_adaptive_rx_coalesce)
799 rx_ring->itr_setting ^= IAVF_ITR_DYNAMIC;
801 tx_ring->itr_setting |= IAVF_ITR_DYNAMIC;
802 if (!ec->use_adaptive_tx_coalesce)
803 tx_ring->itr_setting ^= IAVF_ITR_DYNAMIC;
805 q_vector = rx_ring->q_vector;
806 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
808 q_vector = tx_ring->q_vector;
809 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
811 /* The interrupt handler itself will take care of programming
812 * the Tx and Rx ITR values based on the values we have entered
813 * into the q_vector, no need to write the values now.
819 * __iavf_set_coalesce - set coalesce settings for particular queue
820 * @netdev: the netdev to change
821 * @ec: ethtool coalesce settings
822 * @queue: the queue to change
824 * Sets the coalesce settings for a particular queue.
826 static int __iavf_set_coalesce(struct net_device *netdev,
827 struct ethtool_coalesce *ec, int queue)
829 struct iavf_adapter *adapter = netdev_priv(netdev);
832 if (ec->rx_coalesce_usecs == 0) {
833 if (ec->use_adaptive_rx_coalesce)
834 netif_info(adapter, drv, netdev, "rx-usecs=0, need to disable adaptive-rx for a complete disable\n");
835 } else if ((ec->rx_coalesce_usecs < IAVF_MIN_ITR) ||
836 (ec->rx_coalesce_usecs > IAVF_MAX_ITR)) {
837 netif_info(adapter, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
839 } else if (ec->tx_coalesce_usecs == 0) {
840 if (ec->use_adaptive_tx_coalesce)
841 netif_info(adapter, drv, netdev, "tx-usecs=0, need to disable adaptive-tx for a complete disable\n");
842 } else if ((ec->tx_coalesce_usecs < IAVF_MIN_ITR) ||
843 (ec->tx_coalesce_usecs > IAVF_MAX_ITR)) {
844 netif_info(adapter, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
848 /* Rx and Tx usecs has per queue value. If user doesn't specify the
849 * queue, apply to all queues.
852 for (i = 0; i < adapter->num_active_queues; i++)
853 if (iavf_set_itr_per_queue(adapter, ec, i))
855 } else if (queue < adapter->num_active_queues) {
856 if (iavf_set_itr_per_queue(adapter, ec, queue))
859 netif_info(adapter, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
860 adapter->num_active_queues - 1);
868 * iavf_set_coalesce - Set interrupt coalescing settings
869 * @netdev: network interface device structure
870 * @ec: ethtool coalesce structure
871 * @kernel_coal: ethtool CQE mode setting structure
872 * @extack: extack for reporting error messages
874 * Change current coalescing settings for every queue.
876 static int iavf_set_coalesce(struct net_device *netdev,
877 struct ethtool_coalesce *ec,
878 struct kernel_ethtool_coalesce *kernel_coal,
879 struct netlink_ext_ack *extack)
881 return __iavf_set_coalesce(netdev, ec, -1);
885 * iavf_set_per_queue_coalesce - set specific queue's coalesce settings
886 * @netdev: the netdev to change
887 * @ec: ethtool's coalesce settings
888 * @queue: the queue to modify
890 * Modifies a specific queue's coalesce settings.
892 static int iavf_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
893 struct ethtool_coalesce *ec)
895 return __iavf_set_coalesce(netdev, ec, queue);
899 * iavf_fltr_to_ethtool_flow - convert filter type values to ethtool
901 * @flow: filter type to be converted
903 * Returns the corresponding ethtool flow type.
905 static int iavf_fltr_to_ethtool_flow(enum iavf_fdir_flow_type flow)
908 case IAVF_FDIR_FLOW_IPV4_TCP:
910 case IAVF_FDIR_FLOW_IPV4_UDP:
912 case IAVF_FDIR_FLOW_IPV4_SCTP:
914 case IAVF_FDIR_FLOW_IPV4_AH:
916 case IAVF_FDIR_FLOW_IPV4_ESP:
918 case IAVF_FDIR_FLOW_IPV4_OTHER:
919 return IPV4_USER_FLOW;
920 case IAVF_FDIR_FLOW_IPV6_TCP:
922 case IAVF_FDIR_FLOW_IPV6_UDP:
924 case IAVF_FDIR_FLOW_IPV6_SCTP:
926 case IAVF_FDIR_FLOW_IPV6_AH:
928 case IAVF_FDIR_FLOW_IPV6_ESP:
930 case IAVF_FDIR_FLOW_IPV6_OTHER:
931 return IPV6_USER_FLOW;
932 case IAVF_FDIR_FLOW_NON_IP_L2:
935 /* 0 is undefined ethtool flow */
941 * iavf_ethtool_flow_to_fltr - convert ethtool flow type to filter enum
942 * @eth: Ethtool flow type to be converted
946 static enum iavf_fdir_flow_type iavf_ethtool_flow_to_fltr(int eth)
950 return IAVF_FDIR_FLOW_IPV4_TCP;
952 return IAVF_FDIR_FLOW_IPV4_UDP;
954 return IAVF_FDIR_FLOW_IPV4_SCTP;
956 return IAVF_FDIR_FLOW_IPV4_AH;
958 return IAVF_FDIR_FLOW_IPV4_ESP;
960 return IAVF_FDIR_FLOW_IPV4_OTHER;
962 return IAVF_FDIR_FLOW_IPV6_TCP;
964 return IAVF_FDIR_FLOW_IPV6_UDP;
966 return IAVF_FDIR_FLOW_IPV6_SCTP;
968 return IAVF_FDIR_FLOW_IPV6_AH;
970 return IAVF_FDIR_FLOW_IPV6_ESP;
972 return IAVF_FDIR_FLOW_IPV6_OTHER;
974 return IAVF_FDIR_FLOW_NON_IP_L2;
976 return IAVF_FDIR_FLOW_NONE;
981 * iavf_is_mask_valid - check mask field set
982 * @mask: full mask to check
983 * @field: field for which mask should be valid
985 * If the mask is fully set return true. If it is not valid for field return
988 static bool iavf_is_mask_valid(u64 mask, u64 field)
990 return (mask & field) == field;
994 * iavf_parse_rx_flow_user_data - deconstruct user-defined data
995 * @fsp: pointer to ethtool Rx flow specification
996 * @fltr: pointer to Flow Director filter for userdef data storage
998 * Returns 0 on success, negative error value on failure
1001 iavf_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
1002 struct iavf_fdir_fltr *fltr)
1004 struct iavf_flex_word *flex;
1007 if (!(fsp->flow_type & FLOW_EXT))
1010 for (i = 0; i < IAVF_FLEX_WORD_NUM; i++) {
1011 #define IAVF_USERDEF_FLEX_WORD_M GENMASK(15, 0)
1012 #define IAVF_USERDEF_FLEX_OFFS_S 16
1013 #define IAVF_USERDEF_FLEX_OFFS_M GENMASK(31, IAVF_USERDEF_FLEX_OFFS_S)
1014 #define IAVF_USERDEF_FLEX_FLTR_M GENMASK(31, 0)
1015 u32 value = be32_to_cpu(fsp->h_ext.data[i]);
1016 u32 mask = be32_to_cpu(fsp->m_ext.data[i]);
1018 if (!value || !mask)
1021 if (!iavf_is_mask_valid(mask, IAVF_USERDEF_FLEX_FLTR_M))
1024 /* 504 is the maximum value for offsets, and offset is measured
1025 * from the start of the MAC address.
1027 #define IAVF_USERDEF_FLEX_MAX_OFFS_VAL 504
1028 flex = &fltr->flex_words[cnt++];
1029 flex->word = value & IAVF_USERDEF_FLEX_WORD_M;
1030 flex->offset = (value & IAVF_USERDEF_FLEX_OFFS_M) >>
1031 IAVF_USERDEF_FLEX_OFFS_S;
1032 if (flex->offset > IAVF_USERDEF_FLEX_MAX_OFFS_VAL)
1036 fltr->flex_cnt = cnt;
1042 * iavf_fill_rx_flow_ext_data - fill the additional data
1043 * @fsp: pointer to ethtool Rx flow specification
1044 * @fltr: pointer to Flow Director filter to get additional data
1047 iavf_fill_rx_flow_ext_data(struct ethtool_rx_flow_spec *fsp,
1048 struct iavf_fdir_fltr *fltr)
1050 if (!fltr->ext_mask.usr_def[0] && !fltr->ext_mask.usr_def[1])
1053 fsp->flow_type |= FLOW_EXT;
1055 memcpy(fsp->h_ext.data, fltr->ext_data.usr_def, sizeof(fsp->h_ext.data));
1056 memcpy(fsp->m_ext.data, fltr->ext_mask.usr_def, sizeof(fsp->m_ext.data));
1060 * iavf_get_ethtool_fdir_entry - fill ethtool structure with Flow Director filter data
1061 * @adapter: the VF adapter structure that contains filter list
1062 * @cmd: ethtool command data structure to receive the filter data
1064 * Returns 0 as expected for success by ethtool
1067 iavf_get_ethtool_fdir_entry(struct iavf_adapter *adapter,
1068 struct ethtool_rxnfc *cmd)
1070 struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1071 struct iavf_fdir_fltr *rule = NULL;
1074 if (!FDIR_FLTR_SUPPORT(adapter))
1077 spin_lock_bh(&adapter->fdir_fltr_lock);
1079 rule = iavf_find_fdir_fltr_by_loc(adapter, fsp->location);
1085 fsp->flow_type = iavf_fltr_to_ethtool_flow(rule->flow_type);
1087 memset(&fsp->m_u, 0, sizeof(fsp->m_u));
1088 memset(&fsp->m_ext, 0, sizeof(fsp->m_ext));
1090 switch (fsp->flow_type) {
1094 fsp->h_u.tcp_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip;
1095 fsp->h_u.tcp_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip;
1096 fsp->h_u.tcp_ip4_spec.psrc = rule->ip_data.src_port;
1097 fsp->h_u.tcp_ip4_spec.pdst = rule->ip_data.dst_port;
1098 fsp->h_u.tcp_ip4_spec.tos = rule->ip_data.tos;
1099 fsp->m_u.tcp_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip;
1100 fsp->m_u.tcp_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip;
1101 fsp->m_u.tcp_ip4_spec.psrc = rule->ip_mask.src_port;
1102 fsp->m_u.tcp_ip4_spec.pdst = rule->ip_mask.dst_port;
1103 fsp->m_u.tcp_ip4_spec.tos = rule->ip_mask.tos;
1107 fsp->h_u.ah_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip;
1108 fsp->h_u.ah_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip;
1109 fsp->h_u.ah_ip4_spec.spi = rule->ip_data.spi;
1110 fsp->h_u.ah_ip4_spec.tos = rule->ip_data.tos;
1111 fsp->m_u.ah_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip;
1112 fsp->m_u.ah_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip;
1113 fsp->m_u.ah_ip4_spec.spi = rule->ip_mask.spi;
1114 fsp->m_u.ah_ip4_spec.tos = rule->ip_mask.tos;
1116 case IPV4_USER_FLOW:
1117 fsp->h_u.usr_ip4_spec.ip4src = rule->ip_data.v4_addrs.src_ip;
1118 fsp->h_u.usr_ip4_spec.ip4dst = rule->ip_data.v4_addrs.dst_ip;
1119 fsp->h_u.usr_ip4_spec.l4_4_bytes = rule->ip_data.l4_header;
1120 fsp->h_u.usr_ip4_spec.tos = rule->ip_data.tos;
1121 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
1122 fsp->h_u.usr_ip4_spec.proto = rule->ip_data.proto;
1123 fsp->m_u.usr_ip4_spec.ip4src = rule->ip_mask.v4_addrs.src_ip;
1124 fsp->m_u.usr_ip4_spec.ip4dst = rule->ip_mask.v4_addrs.dst_ip;
1125 fsp->m_u.usr_ip4_spec.l4_4_bytes = rule->ip_mask.l4_header;
1126 fsp->m_u.usr_ip4_spec.tos = rule->ip_mask.tos;
1127 fsp->m_u.usr_ip4_spec.ip_ver = 0xFF;
1128 fsp->m_u.usr_ip4_spec.proto = rule->ip_mask.proto;
1133 memcpy(fsp->h_u.usr_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip,
1134 sizeof(struct in6_addr));
1135 memcpy(fsp->h_u.usr_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip,
1136 sizeof(struct in6_addr));
1137 fsp->h_u.tcp_ip6_spec.psrc = rule->ip_data.src_port;
1138 fsp->h_u.tcp_ip6_spec.pdst = rule->ip_data.dst_port;
1139 fsp->h_u.tcp_ip6_spec.tclass = rule->ip_data.tclass;
1140 memcpy(fsp->m_u.usr_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip,
1141 sizeof(struct in6_addr));
1142 memcpy(fsp->m_u.usr_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip,
1143 sizeof(struct in6_addr));
1144 fsp->m_u.tcp_ip6_spec.psrc = rule->ip_mask.src_port;
1145 fsp->m_u.tcp_ip6_spec.pdst = rule->ip_mask.dst_port;
1146 fsp->m_u.tcp_ip6_spec.tclass = rule->ip_mask.tclass;
1150 memcpy(fsp->h_u.ah_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip,
1151 sizeof(struct in6_addr));
1152 memcpy(fsp->h_u.ah_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip,
1153 sizeof(struct in6_addr));
1154 fsp->h_u.ah_ip6_spec.spi = rule->ip_data.spi;
1155 fsp->h_u.ah_ip6_spec.tclass = rule->ip_data.tclass;
1156 memcpy(fsp->m_u.ah_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip,
1157 sizeof(struct in6_addr));
1158 memcpy(fsp->m_u.ah_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip,
1159 sizeof(struct in6_addr));
1160 fsp->m_u.ah_ip6_spec.spi = rule->ip_mask.spi;
1161 fsp->m_u.ah_ip6_spec.tclass = rule->ip_mask.tclass;
1163 case IPV6_USER_FLOW:
1164 memcpy(fsp->h_u.usr_ip6_spec.ip6src, &rule->ip_data.v6_addrs.src_ip,
1165 sizeof(struct in6_addr));
1166 memcpy(fsp->h_u.usr_ip6_spec.ip6dst, &rule->ip_data.v6_addrs.dst_ip,
1167 sizeof(struct in6_addr));
1168 fsp->h_u.usr_ip6_spec.l4_4_bytes = rule->ip_data.l4_header;
1169 fsp->h_u.usr_ip6_spec.tclass = rule->ip_data.tclass;
1170 fsp->h_u.usr_ip6_spec.l4_proto = rule->ip_data.proto;
1171 memcpy(fsp->m_u.usr_ip6_spec.ip6src, &rule->ip_mask.v6_addrs.src_ip,
1172 sizeof(struct in6_addr));
1173 memcpy(fsp->m_u.usr_ip6_spec.ip6dst, &rule->ip_mask.v6_addrs.dst_ip,
1174 sizeof(struct in6_addr));
1175 fsp->m_u.usr_ip6_spec.l4_4_bytes = rule->ip_mask.l4_header;
1176 fsp->m_u.usr_ip6_spec.tclass = rule->ip_mask.tclass;
1177 fsp->m_u.usr_ip6_spec.l4_proto = rule->ip_mask.proto;
1180 fsp->h_u.ether_spec.h_proto = rule->eth_data.etype;
1181 fsp->m_u.ether_spec.h_proto = rule->eth_mask.etype;
1188 iavf_fill_rx_flow_ext_data(fsp, rule);
1190 if (rule->action == VIRTCHNL_ACTION_DROP)
1191 fsp->ring_cookie = RX_CLS_FLOW_DISC;
1193 fsp->ring_cookie = rule->q_index;
1196 spin_unlock_bh(&adapter->fdir_fltr_lock);
1201 * iavf_get_fdir_fltr_ids - fill buffer with filter IDs of active filters
1202 * @adapter: the VF adapter structure containing the filter list
1203 * @cmd: ethtool command data structure
1204 * @rule_locs: ethtool array passed in from OS to receive filter IDs
1206 * Returns 0 as expected for success by ethtool
1209 iavf_get_fdir_fltr_ids(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd,
1212 struct iavf_fdir_fltr *fltr;
1213 unsigned int cnt = 0;
1216 if (!FDIR_FLTR_SUPPORT(adapter))
1219 cmd->data = IAVF_MAX_FDIR_FILTERS;
1221 spin_lock_bh(&adapter->fdir_fltr_lock);
1223 list_for_each_entry(fltr, &adapter->fdir_list_head, list) {
1224 if (cnt == cmd->rule_cnt) {
1228 rule_locs[cnt] = fltr->loc;
1233 spin_unlock_bh(&adapter->fdir_fltr_lock);
1235 cmd->rule_cnt = cnt;
1241 * iavf_add_fdir_fltr_info - Set the input set for Flow Director filter
1242 * @adapter: pointer to the VF adapter structure
1243 * @fsp: pointer to ethtool Rx flow specification
1244 * @fltr: filter structure
1247 iavf_add_fdir_fltr_info(struct iavf_adapter *adapter, struct ethtool_rx_flow_spec *fsp,
1248 struct iavf_fdir_fltr *fltr)
1250 u32 flow_type, q_index = 0;
1251 enum virtchnl_action act;
1254 if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
1255 act = VIRTCHNL_ACTION_DROP;
1257 q_index = fsp->ring_cookie;
1258 if (q_index >= adapter->num_active_queues)
1261 act = VIRTCHNL_ACTION_QUEUE;
1265 fltr->loc = fsp->location;
1266 fltr->q_index = q_index;
1268 if (fsp->flow_type & FLOW_EXT) {
1269 memcpy(fltr->ext_data.usr_def, fsp->h_ext.data,
1270 sizeof(fltr->ext_data.usr_def));
1271 memcpy(fltr->ext_mask.usr_def, fsp->m_ext.data,
1272 sizeof(fltr->ext_mask.usr_def));
1275 flow_type = fsp->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS);
1276 fltr->flow_type = iavf_ethtool_flow_to_fltr(flow_type);
1278 switch (flow_type) {
1282 fltr->ip_data.v4_addrs.src_ip = fsp->h_u.tcp_ip4_spec.ip4src;
1283 fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
1284 fltr->ip_data.src_port = fsp->h_u.tcp_ip4_spec.psrc;
1285 fltr->ip_data.dst_port = fsp->h_u.tcp_ip4_spec.pdst;
1286 fltr->ip_data.tos = fsp->h_u.tcp_ip4_spec.tos;
1287 fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.tcp_ip4_spec.ip4src;
1288 fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.tcp_ip4_spec.ip4dst;
1289 fltr->ip_mask.src_port = fsp->m_u.tcp_ip4_spec.psrc;
1290 fltr->ip_mask.dst_port = fsp->m_u.tcp_ip4_spec.pdst;
1291 fltr->ip_mask.tos = fsp->m_u.tcp_ip4_spec.tos;
1296 fltr->ip_data.v4_addrs.src_ip = fsp->h_u.ah_ip4_spec.ip4src;
1297 fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.ah_ip4_spec.ip4dst;
1298 fltr->ip_data.spi = fsp->h_u.ah_ip4_spec.spi;
1299 fltr->ip_data.tos = fsp->h_u.ah_ip4_spec.tos;
1300 fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.ah_ip4_spec.ip4src;
1301 fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.ah_ip4_spec.ip4dst;
1302 fltr->ip_mask.spi = fsp->m_u.ah_ip4_spec.spi;
1303 fltr->ip_mask.tos = fsp->m_u.ah_ip4_spec.tos;
1306 case IPV4_USER_FLOW:
1307 fltr->ip_data.v4_addrs.src_ip = fsp->h_u.usr_ip4_spec.ip4src;
1308 fltr->ip_data.v4_addrs.dst_ip = fsp->h_u.usr_ip4_spec.ip4dst;
1309 fltr->ip_data.l4_header = fsp->h_u.usr_ip4_spec.l4_4_bytes;
1310 fltr->ip_data.tos = fsp->h_u.usr_ip4_spec.tos;
1311 fltr->ip_data.proto = fsp->h_u.usr_ip4_spec.proto;
1312 fltr->ip_mask.v4_addrs.src_ip = fsp->m_u.usr_ip4_spec.ip4src;
1313 fltr->ip_mask.v4_addrs.dst_ip = fsp->m_u.usr_ip4_spec.ip4dst;
1314 fltr->ip_mask.l4_header = fsp->m_u.usr_ip4_spec.l4_4_bytes;
1315 fltr->ip_mask.tos = fsp->m_u.usr_ip4_spec.tos;
1316 fltr->ip_mask.proto = fsp->m_u.usr_ip4_spec.proto;
1322 memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.usr_ip6_spec.ip6src,
1323 sizeof(struct in6_addr));
1324 memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst,
1325 sizeof(struct in6_addr));
1326 fltr->ip_data.src_port = fsp->h_u.tcp_ip6_spec.psrc;
1327 fltr->ip_data.dst_port = fsp->h_u.tcp_ip6_spec.pdst;
1328 fltr->ip_data.tclass = fsp->h_u.tcp_ip6_spec.tclass;
1329 memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.usr_ip6_spec.ip6src,
1330 sizeof(struct in6_addr));
1331 memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst,
1332 sizeof(struct in6_addr));
1333 fltr->ip_mask.src_port = fsp->m_u.tcp_ip6_spec.psrc;
1334 fltr->ip_mask.dst_port = fsp->m_u.tcp_ip6_spec.pdst;
1335 fltr->ip_mask.tclass = fsp->m_u.tcp_ip6_spec.tclass;
1340 memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.ah_ip6_spec.ip6src,
1341 sizeof(struct in6_addr));
1342 memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.ah_ip6_spec.ip6dst,
1343 sizeof(struct in6_addr));
1344 fltr->ip_data.spi = fsp->h_u.ah_ip6_spec.spi;
1345 fltr->ip_data.tclass = fsp->h_u.ah_ip6_spec.tclass;
1346 memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.ah_ip6_spec.ip6src,
1347 sizeof(struct in6_addr));
1348 memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.ah_ip6_spec.ip6dst,
1349 sizeof(struct in6_addr));
1350 fltr->ip_mask.spi = fsp->m_u.ah_ip6_spec.spi;
1351 fltr->ip_mask.tclass = fsp->m_u.ah_ip6_spec.tclass;
1354 case IPV6_USER_FLOW:
1355 memcpy(&fltr->ip_data.v6_addrs.src_ip, fsp->h_u.usr_ip6_spec.ip6src,
1356 sizeof(struct in6_addr));
1357 memcpy(&fltr->ip_data.v6_addrs.dst_ip, fsp->h_u.usr_ip6_spec.ip6dst,
1358 sizeof(struct in6_addr));
1359 fltr->ip_data.l4_header = fsp->h_u.usr_ip6_spec.l4_4_bytes;
1360 fltr->ip_data.tclass = fsp->h_u.usr_ip6_spec.tclass;
1361 fltr->ip_data.proto = fsp->h_u.usr_ip6_spec.l4_proto;
1362 memcpy(&fltr->ip_mask.v6_addrs.src_ip, fsp->m_u.usr_ip6_spec.ip6src,
1363 sizeof(struct in6_addr));
1364 memcpy(&fltr->ip_mask.v6_addrs.dst_ip, fsp->m_u.usr_ip6_spec.ip6dst,
1365 sizeof(struct in6_addr));
1366 fltr->ip_mask.l4_header = fsp->m_u.usr_ip6_spec.l4_4_bytes;
1367 fltr->ip_mask.tclass = fsp->m_u.usr_ip6_spec.tclass;
1368 fltr->ip_mask.proto = fsp->m_u.usr_ip6_spec.l4_proto;
1372 fltr->eth_data.etype = fsp->h_u.ether_spec.h_proto;
1373 fltr->eth_mask.etype = fsp->m_u.ether_spec.h_proto;
1376 /* not doing un-parsed flow types */
1380 err = iavf_validate_fdir_fltr_masks(adapter, fltr);
1384 if (iavf_fdir_is_dup_fltr(adapter, fltr))
1387 err = iavf_parse_rx_flow_user_data(fsp, fltr);
1391 return iavf_fill_fdir_add_msg(adapter, fltr);
1395 * iavf_add_fdir_ethtool - add Flow Director filter
1396 * @adapter: pointer to the VF adapter structure
1397 * @cmd: command to add Flow Director filter
1399 * Returns 0 on success and negative values for failure
1401 static int iavf_add_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)
1403 struct ethtool_rx_flow_spec *fsp = &cmd->fs;
1404 struct iavf_fdir_fltr *fltr;
1408 if (!FDIR_FLTR_SUPPORT(adapter))
1411 if (fsp->flow_type & FLOW_MAC_EXT)
1414 spin_lock_bh(&adapter->fdir_fltr_lock);
1415 if (adapter->fdir_active_fltr >= IAVF_MAX_FDIR_FILTERS) {
1416 spin_unlock_bh(&adapter->fdir_fltr_lock);
1417 dev_err(&adapter->pdev->dev,
1418 "Unable to add Flow Director filter because VF reached the limit of max allowed filters (%u)\n",
1419 IAVF_MAX_FDIR_FILTERS);
1423 if (iavf_find_fdir_fltr_by_loc(adapter, fsp->location)) {
1424 dev_err(&adapter->pdev->dev, "Failed to add Flow Director filter, it already exists\n");
1425 spin_unlock_bh(&adapter->fdir_fltr_lock);
1428 spin_unlock_bh(&adapter->fdir_fltr_lock);
1430 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL);
1434 while (!mutex_trylock(&adapter->crit_lock)) {
1442 err = iavf_add_fdir_fltr_info(adapter, fsp, fltr);
1446 spin_lock_bh(&adapter->fdir_fltr_lock);
1447 iavf_fdir_list_add_fltr(adapter, fltr);
1448 adapter->fdir_active_fltr++;
1449 fltr->state = IAVF_FDIR_FLTR_ADD_REQUEST;
1450 adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER;
1451 spin_unlock_bh(&adapter->fdir_fltr_lock);
1453 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
1459 mutex_unlock(&adapter->crit_lock);
1464 * iavf_del_fdir_ethtool - delete Flow Director filter
1465 * @adapter: pointer to the VF adapter structure
1466 * @cmd: command to delete Flow Director filter
1468 * Returns 0 on success and negative values for failure
1470 static int iavf_del_fdir_ethtool(struct iavf_adapter *adapter, struct ethtool_rxnfc *cmd)
1472 struct ethtool_rx_flow_spec *fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
1473 struct iavf_fdir_fltr *fltr = NULL;
1476 if (!FDIR_FLTR_SUPPORT(adapter))
1479 spin_lock_bh(&adapter->fdir_fltr_lock);
1480 fltr = iavf_find_fdir_fltr_by_loc(adapter, fsp->location);
1482 if (fltr->state == IAVF_FDIR_FLTR_ACTIVE) {
1483 fltr->state = IAVF_FDIR_FLTR_DEL_REQUEST;
1484 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER;
1488 } else if (adapter->fdir_active_fltr) {
1491 spin_unlock_bh(&adapter->fdir_fltr_lock);
1493 if (fltr && fltr->state == IAVF_FDIR_FLTR_DEL_REQUEST)
1494 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
1500 * iavf_adv_rss_parse_hdrs - parses headers from RSS hash input
1501 * @cmd: ethtool rxnfc command
1503 * This function parses the rxnfc command and returns intended
1504 * header types for RSS configuration
1506 static u32 iavf_adv_rss_parse_hdrs(struct ethtool_rxnfc *cmd)
1508 u32 hdrs = IAVF_ADV_RSS_FLOW_SEG_HDR_NONE;
1510 switch (cmd->flow_type) {
1512 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_TCP |
1513 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4;
1516 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_UDP |
1517 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4;
1520 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP |
1521 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV4;
1524 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_TCP |
1525 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6;
1528 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_UDP |
1529 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6;
1532 hdrs |= IAVF_ADV_RSS_FLOW_SEG_HDR_SCTP |
1533 IAVF_ADV_RSS_FLOW_SEG_HDR_IPV6;
1543 * iavf_adv_rss_parse_hash_flds - parses hash fields from RSS hash input
1544 * @cmd: ethtool rxnfc command
1546 * This function parses the rxnfc command and returns intended hash fields for
1549 static u64 iavf_adv_rss_parse_hash_flds(struct ethtool_rxnfc *cmd)
1551 u64 hfld = IAVF_ADV_RSS_HASH_INVALID;
1553 if (cmd->data & RXH_IP_SRC || cmd->data & RXH_IP_DST) {
1554 switch (cmd->flow_type) {
1558 if (cmd->data & RXH_IP_SRC)
1559 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV4_SA;
1560 if (cmd->data & RXH_IP_DST)
1561 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV4_DA;
1566 if (cmd->data & RXH_IP_SRC)
1567 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV6_SA;
1568 if (cmd->data & RXH_IP_DST)
1569 hfld |= IAVF_ADV_RSS_HASH_FLD_IPV6_DA;
1576 if (cmd->data & RXH_L4_B_0_1 || cmd->data & RXH_L4_B_2_3) {
1577 switch (cmd->flow_type) {
1580 if (cmd->data & RXH_L4_B_0_1)
1581 hfld |= IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT;
1582 if (cmd->data & RXH_L4_B_2_3)
1583 hfld |= IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT;
1587 if (cmd->data & RXH_L4_B_0_1)
1588 hfld |= IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT;
1589 if (cmd->data & RXH_L4_B_2_3)
1590 hfld |= IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT;
1594 if (cmd->data & RXH_L4_B_0_1)
1595 hfld |= IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT;
1596 if (cmd->data & RXH_L4_B_2_3)
1597 hfld |= IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT;
1608 * iavf_set_adv_rss_hash_opt - Enable/Disable flow types for RSS hash
1609 * @adapter: pointer to the VF adapter structure
1610 * @cmd: ethtool rxnfc command
1612 * Returns Success if the flow input set is supported.
1615 iavf_set_adv_rss_hash_opt(struct iavf_adapter *adapter,
1616 struct ethtool_rxnfc *cmd)
1618 struct iavf_adv_rss *rss_old, *rss_new;
1619 bool rss_new_add = false;
1620 int count = 50, err = 0;
1624 if (!ADV_RSS_SUPPORT(adapter))
1627 hdrs = iavf_adv_rss_parse_hdrs(cmd);
1628 if (hdrs == IAVF_ADV_RSS_FLOW_SEG_HDR_NONE)
1631 hash_flds = iavf_adv_rss_parse_hash_flds(cmd);
1632 if (hash_flds == IAVF_ADV_RSS_HASH_INVALID)
1635 rss_new = kzalloc(sizeof(*rss_new), GFP_KERNEL);
1639 if (iavf_fill_adv_rss_cfg_msg(&rss_new->cfg_msg, hdrs, hash_flds)) {
1644 while (!mutex_trylock(&adapter->crit_lock)) {
1653 spin_lock_bh(&adapter->adv_rss_lock);
1654 rss_old = iavf_find_adv_rss_cfg_by_hdrs(adapter, hdrs);
1656 if (rss_old->state != IAVF_ADV_RSS_ACTIVE) {
1658 } else if (rss_old->hash_flds != hash_flds) {
1659 rss_old->state = IAVF_ADV_RSS_ADD_REQUEST;
1660 rss_old->hash_flds = hash_flds;
1661 memcpy(&rss_old->cfg_msg, &rss_new->cfg_msg,
1662 sizeof(rss_new->cfg_msg));
1663 adapter->aq_required |= IAVF_FLAG_AQ_ADD_ADV_RSS_CFG;
1669 rss_new->state = IAVF_ADV_RSS_ADD_REQUEST;
1670 rss_new->packet_hdrs = hdrs;
1671 rss_new->hash_flds = hash_flds;
1672 list_add_tail(&rss_new->list, &adapter->adv_rss_list_head);
1673 adapter->aq_required |= IAVF_FLAG_AQ_ADD_ADV_RSS_CFG;
1675 spin_unlock_bh(&adapter->adv_rss_lock);
1678 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
1680 mutex_unlock(&adapter->crit_lock);
1689 * iavf_get_adv_rss_hash_opt - Retrieve hash fields for a given flow-type
1690 * @adapter: pointer to the VF adapter structure
1691 * @cmd: ethtool rxnfc command
1693 * Returns Success if the flow input set is supported.
1696 iavf_get_adv_rss_hash_opt(struct iavf_adapter *adapter,
1697 struct ethtool_rxnfc *cmd)
1699 struct iavf_adv_rss *rss;
1703 if (!ADV_RSS_SUPPORT(adapter))
1708 hdrs = iavf_adv_rss_parse_hdrs(cmd);
1709 if (hdrs == IAVF_ADV_RSS_FLOW_SEG_HDR_NONE)
1712 spin_lock_bh(&adapter->adv_rss_lock);
1713 rss = iavf_find_adv_rss_cfg_by_hdrs(adapter, hdrs);
1715 hash_flds = rss->hash_flds;
1717 hash_flds = IAVF_ADV_RSS_HASH_INVALID;
1718 spin_unlock_bh(&adapter->adv_rss_lock);
1720 if (hash_flds == IAVF_ADV_RSS_HASH_INVALID)
1723 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_SA |
1724 IAVF_ADV_RSS_HASH_FLD_IPV6_SA))
1725 cmd->data |= (u64)RXH_IP_SRC;
1727 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_IPV4_DA |
1728 IAVF_ADV_RSS_HASH_FLD_IPV6_DA))
1729 cmd->data |= (u64)RXH_IP_DST;
1731 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_SRC_PORT |
1732 IAVF_ADV_RSS_HASH_FLD_UDP_SRC_PORT |
1733 IAVF_ADV_RSS_HASH_FLD_SCTP_SRC_PORT))
1734 cmd->data |= (u64)RXH_L4_B_0_1;
1736 if (hash_flds & (IAVF_ADV_RSS_HASH_FLD_TCP_DST_PORT |
1737 IAVF_ADV_RSS_HASH_FLD_UDP_DST_PORT |
1738 IAVF_ADV_RSS_HASH_FLD_SCTP_DST_PORT))
1739 cmd->data |= (u64)RXH_L4_B_2_3;
1745 * iavf_set_rxnfc - command to set Rx flow rules.
1746 * @netdev: network interface device structure
1747 * @cmd: ethtool rxnfc command
1749 * Returns 0 for success and negative values for errors
1751 static int iavf_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
1753 struct iavf_adapter *adapter = netdev_priv(netdev);
1754 int ret = -EOPNOTSUPP;
1757 case ETHTOOL_SRXCLSRLINS:
1758 ret = iavf_add_fdir_ethtool(adapter, cmd);
1760 case ETHTOOL_SRXCLSRLDEL:
1761 ret = iavf_del_fdir_ethtool(adapter, cmd);
1764 ret = iavf_set_adv_rss_hash_opt(adapter, cmd);
1774 * iavf_get_rxnfc - command to get RX flow classification rules
1775 * @netdev: network interface device structure
1776 * @cmd: ethtool rxnfc command
1777 * @rule_locs: pointer to store rule locations
1779 * Returns Success if the command is supported.
1781 static int iavf_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
1784 struct iavf_adapter *adapter = netdev_priv(netdev);
1785 int ret = -EOPNOTSUPP;
1788 case ETHTOOL_GRXRINGS:
1789 cmd->data = adapter->num_active_queues;
1792 case ETHTOOL_GRXCLSRLCNT:
1793 if (!FDIR_FLTR_SUPPORT(adapter))
1795 spin_lock_bh(&adapter->fdir_fltr_lock);
1796 cmd->rule_cnt = adapter->fdir_active_fltr;
1797 spin_unlock_bh(&adapter->fdir_fltr_lock);
1798 cmd->data = IAVF_MAX_FDIR_FILTERS;
1801 case ETHTOOL_GRXCLSRULE:
1802 ret = iavf_get_ethtool_fdir_entry(adapter, cmd);
1804 case ETHTOOL_GRXCLSRLALL:
1805 ret = iavf_get_fdir_fltr_ids(adapter, cmd, (u32 *)rule_locs);
1808 ret = iavf_get_adv_rss_hash_opt(adapter, cmd);
1817 * iavf_get_channels: get the number of channels supported by the device
1818 * @netdev: network interface device structure
1819 * @ch: channel information structure
1821 * For the purposes of our device, we only use combined channels, i.e. a tx/rx
1822 * queue pair. Report one extra channel to match our "other" MSI-X vector.
1824 static void iavf_get_channels(struct net_device *netdev,
1825 struct ethtool_channels *ch)
1827 struct iavf_adapter *adapter = netdev_priv(netdev);
1829 /* Report maximum channels */
1830 ch->max_combined = adapter->vsi_res->num_queue_pairs;
1832 ch->max_other = NONQ_VECS;
1833 ch->other_count = NONQ_VECS;
1835 ch->combined_count = adapter->num_active_queues;
1839 * iavf_set_channels: set the new channel count
1840 * @netdev: network interface device structure
1841 * @ch: channel information structure
1843 * Negotiate a new number of channels with the PF then do a reset. During
1844 * reset we'll realloc queues and fix the RSS table. Returns 0 on success,
1845 * negative on failure.
1847 static int iavf_set_channels(struct net_device *netdev,
1848 struct ethtool_channels *ch)
1850 struct iavf_adapter *adapter = netdev_priv(netdev);
1851 u32 num_req = ch->combined_count;
1854 if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
1856 dev_info(&adapter->pdev->dev, "Cannot set channels since ADq is enabled.\n");
1860 /* All of these should have already been checked by ethtool before this
1861 * even gets to us, but just to be sure.
1863 if (num_req == 0 || num_req > adapter->vsi_res->num_queue_pairs)
1866 if (num_req == adapter->num_active_queues)
1869 if (ch->rx_count || ch->tx_count || ch->other_count != NONQ_VECS)
1872 adapter->num_req_queues = num_req;
1873 adapter->flags |= IAVF_FLAG_REINIT_ITR_NEEDED;
1874 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED);
1876 ret = iavf_wait_for_reset(adapter);
1878 netdev_warn(netdev, "Changing channel count timeout or interrupted waiting for reset");
1884 * iavf_get_rxfh_key_size - get the RSS hash key size
1885 * @netdev: network interface device structure
1887 * Returns the table size.
1889 static u32 iavf_get_rxfh_key_size(struct net_device *netdev)
1891 struct iavf_adapter *adapter = netdev_priv(netdev);
1893 return adapter->rss_key_size;
1897 * iavf_get_rxfh_indir_size - get the rx flow hash indirection table size
1898 * @netdev: network interface device structure
1900 * Returns the table size.
1902 static u32 iavf_get_rxfh_indir_size(struct net_device *netdev)
1904 struct iavf_adapter *adapter = netdev_priv(netdev);
1906 return adapter->rss_lut_size;
1910 * iavf_get_rxfh - get the rx flow hash indirection table
1911 * @netdev: network interface device structure
1912 * @indir: indirection table
1914 * @hfunc: hash function in use
1916 * Reads the indirection table directly from the hardware. Always returns 0.
1918 static int iavf_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
1921 struct iavf_adapter *adapter = netdev_priv(netdev);
1925 *hfunc = ETH_RSS_HASH_TOP;
1927 memcpy(key, adapter->rss_key, adapter->rss_key_size);
1930 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
1931 for (i = 0; i < adapter->rss_lut_size; i++)
1932 indir[i] = (u32)adapter->rss_lut[i];
1938 * iavf_set_rxfh - set the rx flow hash indirection table
1939 * @netdev: network interface device structure
1940 * @indir: indirection table
1942 * @hfunc: hash function to use
1944 * Returns -EINVAL if the table specifies an invalid queue id, otherwise
1945 * returns 0 after programming the table.
1947 static int iavf_set_rxfh(struct net_device *netdev, const u32 *indir,
1948 const u8 *key, const u8 hfunc)
1950 struct iavf_adapter *adapter = netdev_priv(netdev);
1953 /* Only support toeplitz hash function */
1954 if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
1961 memcpy(adapter->rss_key, key, adapter->rss_key_size);
1964 /* Each 32 bits pointed by 'indir' is stored with a lut entry */
1965 for (i = 0; i < adapter->rss_lut_size; i++)
1966 adapter->rss_lut[i] = (u8)(indir[i]);
1969 return iavf_config_rss(adapter);
1972 static const struct ethtool_ops iavf_ethtool_ops = {
1973 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
1974 ETHTOOL_COALESCE_USE_ADAPTIVE,
1975 .get_drvinfo = iavf_get_drvinfo,
1976 .get_link = ethtool_op_get_link,
1977 .get_ringparam = iavf_get_ringparam,
1978 .set_ringparam = iavf_set_ringparam,
1979 .get_strings = iavf_get_strings,
1980 .get_ethtool_stats = iavf_get_ethtool_stats,
1981 .get_sset_count = iavf_get_sset_count,
1982 .get_priv_flags = iavf_get_priv_flags,
1983 .set_priv_flags = iavf_set_priv_flags,
1984 .get_msglevel = iavf_get_msglevel,
1985 .set_msglevel = iavf_set_msglevel,
1986 .get_coalesce = iavf_get_coalesce,
1987 .set_coalesce = iavf_set_coalesce,
1988 .get_per_queue_coalesce = iavf_get_per_queue_coalesce,
1989 .set_per_queue_coalesce = iavf_set_per_queue_coalesce,
1990 .set_rxnfc = iavf_set_rxnfc,
1991 .get_rxnfc = iavf_get_rxnfc,
1992 .get_rxfh_indir_size = iavf_get_rxfh_indir_size,
1993 .get_rxfh = iavf_get_rxfh,
1994 .set_rxfh = iavf_set_rxfh,
1995 .get_channels = iavf_get_channels,
1996 .set_channels = iavf_set_channels,
1997 .get_rxfh_key_size = iavf_get_rxfh_key_size,
1998 .get_link_ksettings = iavf_get_link_ksettings,
2002 * iavf_set_ethtool_ops - Initialize ethtool ops struct
2003 * @netdev: network interface device structure
2005 * Sets ethtool ops struct in our netdev so that ethtool can call
2008 void iavf_set_ethtool_ops(struct net_device *netdev)
2010 netdev->ethtool_ops = &iavf_ethtool_ops;