drivers/net/wireless/iwmc3200wifi/rx.c

   1 /*
   2  * Intel Wireless Multicomm 3200 WiFi driver
   3  *
   4  * Copyright (C) 2009 Intel Corporation. All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  *   * Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *   * Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in
  14  *     the documentation and/or other materials provided with the
  15  *     distribution.
  16  *   * Neither the name of Intel Corporation nor the names of its
  17  *     contributors may be used to endorse or promote products derived
  18  *     from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  *
  33  * Intel Corporation <ilw@linux.intel.com>
  34  * Samuel Ortiz <samuel.ortiz@intel.com>
  35  * Zhu Yi <yi.zhu@intel.com>
  36  *
  37  */
  38
  39 #include <linux/kernel.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/wireless.h>
  43 #include <linux/ieee80211.h>
  44 #include <linux/if_arp.h>
  45 #include <linux/list.h>
  46 #include <net/iw_handler.h>
  47
  48 #include "iwm.h"
  49 #include "debug.h"
  50 #include "hal.h"
  51 #include "umac.h"
  52 #include "lmac.h"
  53 #include "commands.h"
  54 #include "rx.h"
  55 #include "cfg80211.h"
  56 #include "eeprom.h"
  57
  58 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
  59 {
  60         if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
  61             (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
  62                 return -EINVAL;
  63
  64         return 0;
  65 }
  66
  67 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
  68 {
  69         return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
  70                      16);
  71 }
  72
  73 /*
  74  * Notification handlers:
  75  *
  76  * For every possible notification we can receive from the
  77  * target, we have a handler.
  78  * When we get a target notification, and there is no one
  79  * waiting for it, it's just processed through the rx code
  80  * path:
  81  *
  82  * iwm_rx_handle()
  83  *  -> iwm_rx_handle_umac()
  84  *      -> iwm_rx_handle_wifi()
  85  *          -> iwm_rx_handle_resp()
  86  *              -> iwm_ntf_*()
  87  *
  88  *      OR
  89  *
  90  *      -> iwm_rx_handle_non_wifi()
  91  *
  92  * If there are processes waiting for this notification, then
  93  * iwm_rx_handle_wifi() just wakes those processes up and they
  94  * grab the pending notification.
  95  */
  96 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
  97                          unsigned long buf_size, struct iwm_wifi_cmd *cmd)
  98 {
  99         struct iwm_umac_notif_error *error;
 100         struct iwm_fw_error_hdr *fw_err;
 101
 102         error = (struct iwm_umac_notif_error *)buf;
 103         fw_err = &error->err;
 104
 105         memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
 106
 107         IWM_ERR(iwm, "%cMAC FW ERROR:\n",
 108          (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
 109         IWM_ERR(iwm, "\tCategory:    %d\n", le32_to_cpu(fw_err->category));
 110         IWM_ERR(iwm, "\tStatus:      0x%x\n", le32_to_cpu(fw_err->status));
 111         IWM_ERR(iwm, "\tPC:          0x%x\n", le32_to_cpu(fw_err->pc));
 112         IWM_ERR(iwm, "\tblink1:      %d\n", le32_to_cpu(fw_err->blink1));
 113         IWM_ERR(iwm, "\tblink2:      %d\n", le32_to_cpu(fw_err->blink2));
 114         IWM_ERR(iwm, "\tilink1:      %d\n", le32_to_cpu(fw_err->ilink1));
 115         IWM_ERR(iwm, "\tilink2:      %d\n", le32_to_cpu(fw_err->ilink2));
 116         IWM_ERR(iwm, "\tData1:       0x%x\n", le32_to_cpu(fw_err->data1));
 117         IWM_ERR(iwm, "\tData2:       0x%x\n", le32_to_cpu(fw_err->data2));
 118         IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
 119         IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
 120         IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
 121         IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
 122
 123         iwm_resetting(iwm);
 124
 125         return 0;
 126 }
 127
 128 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
 129                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 130 {
 131         struct iwm_umac_notif_alive *alive_resp =
 132                         (struct iwm_umac_notif_alive *)(buf);
 133         u16 status = le16_to_cpu(alive_resp->status);
 134
 135         if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
 136                 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
 137                 return -EIO;
 138         }
 139
 140         iwm_tx_credit_init_pools(iwm, alive_resp);
 141
 142         return 0;
 143 }
 144
 145 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
 146                                  unsigned long buf_size,
 147                                  struct iwm_wifi_cmd *cmd)
 148 {
 149         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 150         struct iwm_umac_notif_init_complete *init_complete =
 151                         (struct iwm_umac_notif_init_complete *)(buf);
 152         u16 status = le16_to_cpu(init_complete->status);
 153         bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
 154
 155         if (blocked)
 156                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
 157         else
 158                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
 159
 160         wiphy_rfkill_set_hw_state(wiphy, blocked);
 161
 162         return 0;
 163 }
 164
 165 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
 166                                     unsigned long buf_size,
 167                                     struct iwm_wifi_cmd *cmd)
 168 {
 169         int pool_nr, total_freed_pages;
 170         unsigned long pool_map;
 171         int i, id;
 172         struct iwm_umac_notif_page_dealloc *dealloc =
 173                         (struct iwm_umac_notif_page_dealloc *)buf;
 174
 175         pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
 176         pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
 177
 178         IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
 179                    "update map 0x%lx\n", pool_nr, pool_map);
 180
 181         spin_lock(&iwm->tx_credit.lock);
 182
 183         for (i = 0; i < pool_nr; i++) {
 184                 id = GET_VAL32(dealloc->grp_info[i],
 185                                UMAC_DEALLOC_NTFY_GROUP_NUM);
 186                 if (test_bit(id, &pool_map)) {
 187                         total_freed_pages = GET_VAL32(dealloc->grp_info[i],
 188                                               UMAC_DEALLOC_NTFY_PAGE_CNT);
 189                         iwm_tx_credit_inc(iwm, id, total_freed_pages);
 190                 }
 191         }
 192
 193         spin_unlock(&iwm->tx_credit.lock);
 194
 195         return 0;
 196 }
 197
 198 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
 199                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 200 {
 201         IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
 202
 203         return 0;
 204 }
 205
 206 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
 207                                 unsigned long buf_size,
 208                                 struct iwm_wifi_cmd *cmd)
 209 {
 210         IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
 211
 212         return 0;
 213 }
 214
 215 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
 216                       unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 217 {
 218         struct iwm_lmac_tx_resp *tx_resp;
 219         struct iwm_umac_wifi_in_hdr *hdr;
 220
 221         tx_resp = (struct iwm_lmac_tx_resp *)
 222                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 223         hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 224
 225         IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
 226
 227         IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
 228                    le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
 229         IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
 230         IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
 231                    le16_to_cpu(tx_resp->retry_cnt));
 232         IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
 233         IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
 234                    le16_to_cpu(tx_resp->byte_cnt));
 235         IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
 236
 237         return 0;
 238 }
 239
 240
 241 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
 242                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 243 {
 244         u8 opcode;
 245         u8 *calib_buf;
 246         struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
 247                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 248
 249         opcode = hdr->opcode;
 250
 251         BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
 252                opcode < PHY_CALIBRATE_OPCODES_NUM);
 253
 254         IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
 255                     opcode);
 256
 257         buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
 258         calib_buf = iwm->calib_res[opcode].buf;
 259
 260         if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
 261                 kfree(calib_buf);
 262                 calib_buf = kzalloc(buf_size, GFP_KERNEL);
 263                 if (!calib_buf) {
 264                         IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
 265                         return -ENOMEM;
 266                 }
 267                 iwm->calib_res[opcode].buf = calib_buf;
 268                 iwm->calib_res[opcode].size = buf_size;
 269         }
 270
 271         memcpy(calib_buf, hdr, buf_size);
 272         set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
 273
 274         return 0;
 275 }
 276
 277 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
 278                                   unsigned long buf_size,
 279                                   struct iwm_wifi_cmd *cmd)
 280 {
 281         IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
 282
 283         return 0;
 284 }
 285
 286 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
 287                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 288 {
 289         struct iwm_lmac_cal_cfg_resp *cal_resp;
 290
 291         cal_resp = (struct iwm_lmac_cal_cfg_resp *)
 292                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 293
 294         IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
 295                     le32_to_cpu(cal_resp->status));
 296
 297         return 0;
 298 }
 299
 300 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
 301                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 302 {
 303         struct iwm_umac_notif_wifi_status *status =
 304                 (struct iwm_umac_notif_wifi_status *)buf;
 305
 306         iwm->core_enabled |= le16_to_cpu(status->status);
 307
 308         return 0;
 309 }
 310
 311 static struct iwm_rx_ticket_node *
 312 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
 313 {
 314         struct iwm_rx_ticket_node *ticket_node;
 315
 316         ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
 317         if (!ticket_node) {
 318                 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
 319                 return ERR_PTR(-ENOMEM);
 320         }
 321
 322         ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
 323         if (!ticket_node->ticket) {
 324                 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
 325                 kfree(ticket_node);
 326                 return ERR_PTR(-ENOMEM);
 327         }
 328
 329         memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
 330         INIT_LIST_HEAD(&ticket_node->node);
 331
 332         return ticket_node;
 333 }
 334
 335 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
 336 {
 337         kfree(ticket_node->ticket);
 338         kfree(ticket_node);
 339 }
 340
 341 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
 342 {
 343         u8 id_hash = IWM_RX_ID_GET_HASH(id);
 344         struct list_head *packet_list;
 345         struct iwm_rx_packet *packet, *next;
 346
 347         packet_list = &iwm->rx_packets[id_hash];
 348
 349         list_for_each_entry_safe(packet, next, packet_list, node)
 350                 if (packet->id == id)
 351                         return packet;
 352
 353         return NULL;
 354 }
 355
 356 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
 357                                                  u32 size, u16 id)
 358 {
 359         struct iwm_rx_packet *packet;
 360
 361         packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
 362         if (!packet) {
 363                 IWM_ERR(iwm, "Couldn't allocate packet\n");
 364                 return ERR_PTR(-ENOMEM);
 365         }
 366
 367         packet->skb = dev_alloc_skb(size);
 368         if (!packet->skb) {
 369                 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
 370                 kfree(packet);
 371                 return ERR_PTR(-ENOMEM);
 372         }
 373
 374         packet->pkt_size = size;
 375
 376         skb_put(packet->skb, size);
 377         memcpy(packet->skb->data, buf, size);
 378         INIT_LIST_HEAD(&packet->node);
 379         packet->id = id;
 380
 381         return packet;
 382 }
 383
 384 void iwm_rx_free(struct iwm_priv *iwm)
 385 {
 386         struct iwm_rx_ticket_node *ticket, *nt;
 387         struct iwm_rx_packet *packet, *np;
 388         int i;
 389
 390         list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
 391                 list_del(&ticket->node);
 392                 iwm_rx_ticket_node_free(ticket);
 393         }
 394
 395         for (i = 0; i < IWM_RX_ID_HASH; i++) {
 396                 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
 397                                          node) {
 398                         list_del(&packet->node);
 399                         kfree_skb(packet->skb);
 400                         kfree(packet);
 401                 }
 402         }
 403 }
 404
 405 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
 406                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 407 {
 408         struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
 409                 (struct iwm_umac_notif_rx_ticket *)buf;
 410         struct iwm_rx_ticket *ticket =
 411                 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
 412         int i, schedule_rx = 0;
 413
 414         for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
 415                 struct iwm_rx_ticket_node *ticket_node;
 416
 417                 switch (le16_to_cpu(ticket->action)) {
 418                 case IWM_RX_TICKET_RELEASE:
 419                 case IWM_RX_TICKET_DROP:
 420                         /* We can push the packet to the stack */
 421                         ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
 422                         if (IS_ERR(ticket_node))
 423                                 return PTR_ERR(ticket_node);
 424
 425                         IWM_DBG_RX(iwm, DBG, "TICKET %s(%d)\n",
 426                                    ticket->action ==  IWM_RX_TICKET_RELEASE ?
 427                                    "RELEASE" : "DROP",
 428                                    ticket->id);
 429                         list_add_tail(&ticket_node->node, &iwm->rx_tickets);
 430
 431                         /*
 432                          * We received an Rx ticket, most likely there's
 433                          * a packet pending for it, it's not worth going
 434                          * through the packet hash list to double check.
 435                          * Let's just fire the rx worker..
 436                          */
 437                         schedule_rx = 1;
 438
 439                         break;
 440
 441                 default:
 442                         IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
 443                                 ticket->action);
 444                 }
 445
 446                 ticket++;
 447         }
 448
 449         if (schedule_rx)
 450                 queue_work(iwm->rx_wq, &iwm->rx_worker);
 451
 452         return 0;
 453 }
 454
 455 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
 456                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 457 {
 458         struct iwm_umac_wifi_in_hdr *wifi_hdr;
 459         struct iwm_rx_packet *packet;
 460         u16 id, buf_offset;
 461         u32 packet_size;
 462
 463         IWM_DBG_RX(iwm, DBG, "\n");
 464
 465         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 466         id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
 467         buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
 468         packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
 469
 470         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
 471                    wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
 472         IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
 473         IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
 474
 475         packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
 476         if (IS_ERR(packet))
 477                 return PTR_ERR(packet);
 478
 479         list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
 480
 481         /* We might (unlikely) have received the packet _after_ the ticket */
 482         queue_work(iwm->rx_wq, &iwm->rx_worker);
 483
 484         return 0;
 485 }
 486
 487 /* MLME handlers */
 488 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
 489                                 unsigned long buf_size,
 490                                 struct iwm_wifi_cmd *cmd)
 491 {
 492         struct iwm_umac_notif_assoc_start *start;
 493
 494         start = (struct iwm_umac_notif_assoc_start *)buf;
 495
 496         IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
 497                      start->bssid, le32_to_cpu(start->roam_reason));
 498
 499         wake_up_interruptible(&iwm->mlme_queue);
 500
 501         return 0;
 502 }
 503
 504 static u8 iwm_is_open_wep_profile(struct iwm_priv *iwm)
 505 {
 506         if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 ||
 507              iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) &&
 508             (iwm->umac_profile->sec.ucast_cipher ==
 509              iwm->umac_profile->sec.mcast_cipher) &&
 510             (iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN))
 511                return 1;
 512
 513        return 0;
 514 }
 515
 516 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
 517                                    unsigned long buf_size,
 518                                    struct iwm_wifi_cmd *cmd)
 519 {
 520         struct iwm_umac_notif_assoc_complete *complete =
 521                 (struct iwm_umac_notif_assoc_complete *)buf;
 522
 523         IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
 524                      complete->bssid, complete->status);
 525
 526         switch (le32_to_cpu(complete->status)) {
 527         case UMAC_ASSOC_COMPLETE_SUCCESS:
 528                 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 529                 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
 530                 iwm->channel = complete->channel;
 531
 532                 /* Internal roaming state, avoid notifying SME. */
 533                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 534                     && iwm->conf.mode == UMAC_MODE_BSS) {
 535                         cancel_delayed_work(&iwm->disconnect);
 536                         cfg80211_roamed(iwm_to_ndev(iwm),
 537                                         complete->bssid,
 538                                         iwm->req_ie, iwm->req_ie_len,
 539                                         iwm->resp_ie, iwm->resp_ie_len,
 540                                         GFP_KERNEL);
 541                         break;
 542                 }
 543
 544                 iwm_link_on(iwm);
 545
 546                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 547                         goto ibss;
 548
 549                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 550                         cfg80211_connect_result(iwm_to_ndev(iwm),
 551                                                 complete->bssid,
 552                                                 iwm->req_ie, iwm->req_ie_len,
 553                                                 iwm->resp_ie, iwm->resp_ie_len,
 554                                                 WLAN_STATUS_SUCCESS,
 555                                                 GFP_KERNEL);
 556                 else
 557                         cfg80211_roamed(iwm_to_ndev(iwm),
 558                                         complete->bssid,
 559                                         iwm->req_ie, iwm->req_ie_len,
 560                                         iwm->resp_ie, iwm->resp_ie_len,
 561                                         GFP_KERNEL);
 562                 break;
 563         case UMAC_ASSOC_COMPLETE_FAILURE:
 564                 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 565                 memset(iwm->bssid, 0, ETH_ALEN);
 566                 iwm->channel = 0;
 567
 568                 /* Internal roaming state, avoid notifying SME. */
 569                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 570                     && iwm->conf.mode == UMAC_MODE_BSS) {
 571                         cancel_delayed_work(&iwm->disconnect);
 572                         break;
 573                 }
 574
 575                 iwm_link_off(iwm);
 576
 577                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 578                         goto ibss;
 579
 580                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 581                         if (!iwm_is_open_wep_profile(iwm)) {
 582                                 cfg80211_connect_result(iwm_to_ndev(iwm),
 583                                                complete->bssid,
 584                                                NULL, 0, NULL, 0,
 585                                                WLAN_STATUS_UNSPECIFIED_FAILURE,
 586                                                GFP_KERNEL);
 587                         } else {
 588                                 /* Let's try shared WEP auth */
 589                                 IWM_ERR(iwm, "Trying WEP shared auth\n");
 590                                 schedule_work(&iwm->auth_retry_worker);
 591                         }
 592                 else
 593                         cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
 594                                               GFP_KERNEL);
 595                 break;
 596         default:
 597                 break;
 598         }
 599
 600         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 601         return 0;
 602
 603  ibss:
 604         cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
 605         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 606         return 0;
 607 }
 608
 609 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
 610                                        unsigned long buf_size,
 611                                        struct iwm_wifi_cmd *cmd)
 612 {
 613         struct iwm_umac_notif_profile_invalidate *invalid;
 614         u32 reason;
 615
 616         invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
 617         reason = le32_to_cpu(invalid->reason);
 618
 619         IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
 620
 621         if (reason != UMAC_PROFILE_INVALID_REQUEST &&
 622             test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
 623                 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
 624                                         0, WLAN_STATUS_UNSPECIFIED_FAILURE,
 625                                         GFP_KERNEL);
 626
 627         clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
 628         clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 629
 630         iwm->umac_profile_active = 0;
 631         memset(iwm->bssid, 0, ETH_ALEN);
 632         iwm->channel = 0;
 633
 634         iwm_link_off(iwm);
 635
 636         wake_up_interruptible(&iwm->mlme_queue);
 637
 638         return 0;
 639 }
 640
 641 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
 642
 643 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
 644                                           unsigned long buf_size,
 645                                           struct iwm_wifi_cmd *cmd)
 646 {
 647         IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
 648
 649         schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
 650
 651         return 0;
 652 }
 653
 654 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
 655                                   unsigned long buf_size,
 656                                   struct iwm_wifi_cmd *cmd)
 657 {
 658         int ret;
 659         struct iwm_umac_notif_scan_complete *scan_complete =
 660                 (struct iwm_umac_notif_scan_complete *)buf;
 661         u32 result = le32_to_cpu(scan_complete->result);
 662
 663         IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
 664                      le32_to_cpu(scan_complete->type),
 665                      le32_to_cpu(scan_complete->result),
 666                      scan_complete->seq_num);
 667
 668         if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
 669                 IWM_ERR(iwm, "Scan complete while device not scanning\n");
 670                 return -EIO;
 671         }
 672         if (!iwm->scan_request)
 673                 return 0;
 674
 675         ret = iwm_cfg80211_inform_bss(iwm);
 676
 677         cfg80211_scan_done(iwm->scan_request,
 678                            (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
 679         iwm->scan_request = NULL;
 680
 681         return ret;
 682 }
 683
 684 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
 685                                      unsigned long buf_size,
 686                                      struct iwm_wifi_cmd *cmd)
 687 {
 688         struct iwm_umac_notif_sta_info *umac_sta =
 689                         (struct iwm_umac_notif_sta_info *)buf;
 690         struct iwm_sta_info *sta;
 691         int i;
 692
 693         switch (le32_to_cpu(umac_sta->opcode)) {
 694         case UMAC_OPCODE_ADD_MODIFY:
 695                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 696
 697                 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
 698                              "addr = %pM, qos = %d\n",
 699                              sta->valid ? "Modify" : "Add",
 700                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 701                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 702                              umac_sta->mac_addr,
 703                              umac_sta->flags & UMAC_STA_FLAG_QOS);
 704
 705                 sta->valid = 1;
 706                 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
 707                 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
 708                 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
 709                 break;
 710         case UMAC_OPCODE_REMOVE:
 711                 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
 712                              "addr = %pM\n",
 713                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 714                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 715                              umac_sta->mac_addr);
 716
 717                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 718
 719                 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
 720                         sta->valid = 0;
 721
 722                 break;
 723         case UMAC_OPCODE_CLEAR_ALL:
 724                 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
 725                         iwm->sta_table[i].valid = 0;
 726
 727                 break;
 728         default:
 729                 break;
 730         }
 731
 732         return 0;
 733 }
 734
 735 static int iwm_mlme_medium_lost(struct iwm_priv *iwm, u8 *buf,
 736                                 unsigned long buf_size,
 737                                 struct iwm_wifi_cmd *cmd)
 738 {
 739         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 740
 741         IWM_DBG_NTF(iwm, DBG, "WiFi/WiMax coexistence radio is OFF\n");
 742
 743         wiphy_rfkill_set_hw_state(wiphy, true);
 744
 745         return 0;
 746 }
 747
 748 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
 749                                      unsigned long buf_size,
 750                                      struct iwm_wifi_cmd *cmd)
 751 {
 752         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 753         struct ieee80211_mgmt *mgmt;
 754         struct iwm_umac_notif_bss_info *umac_bss =
 755                         (struct iwm_umac_notif_bss_info *)buf;
 756         struct ieee80211_channel *channel;
 757         struct ieee80211_supported_band *band;
 758         struct iwm_bss_info *bss, *next;
 759         s32 signal;
 760         int freq;
 761         u16 frame_len = le16_to_cpu(umac_bss->frame_len);
 762         size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
 763
 764         mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
 765
 766         IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
 767         IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
 768         IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
 769                      le32_to_cpu(umac_bss->timestamp));
 770         IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
 771                      le16_to_cpu(umac_bss->table_idx));
 772         IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
 773         IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
 774         IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
 775         IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
 776
 777         list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 778                 if (bss->bss->table_idx == umac_bss->table_idx)
 779                         break;
 780
 781         if (&bss->node != &iwm->bss_list) {
 782                 /* Remove the old BSS entry, we will add it back later. */
 783                 list_del(&bss->node);
 784                 kfree(bss->bss);
 785         } else {
 786                 /* New BSS entry */
 787
 788                 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
 789                 if (!bss) {
 790                         IWM_ERR(iwm, "Couldn't allocate bss_info\n");
 791                         return -ENOMEM;
 792                 }
 793         }
 794
 795         bss->bss = kzalloc(bss_len, GFP_KERNEL);
 796         if (!bss) {
 797                 kfree(bss);
 798                 IWM_ERR(iwm, "Couldn't allocate bss\n");
 799                 return -ENOMEM;
 800         }
 801
 802         INIT_LIST_HEAD(&bss->node);
 803         memcpy(bss->bss, umac_bss, bss_len);
 804
 805         if (umac_bss->band == UMAC_BAND_2GHZ)
 806                 band = wiphy->bands[IEEE80211_BAND_2GHZ];
 807         else if (umac_bss->band == UMAC_BAND_5GHZ)
 808                 band = wiphy->bands[IEEE80211_BAND_5GHZ];
 809         else {
 810                 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
 811                 goto err;
 812         }
 813
 814         freq = ieee80211_channel_to_frequency(umac_bss->channel);
 815         channel = ieee80211_get_channel(wiphy, freq);
 816         signal = umac_bss->rssi * 100;
 817
 818         bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
 819                                                  mgmt, frame_len,
 820                                                  signal, GFP_KERNEL);
 821         if (!bss->cfg_bss)
 822                 goto err;
 823
 824         list_add_tail(&bss->node, &iwm->bss_list);
 825
 826         return 0;
 827  err:
 828         kfree(bss->bss);
 829         kfree(bss);
 830
 831         return -EINVAL;
 832 }
 833
 834 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
 835                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 836 {
 837         struct iwm_umac_notif_bss_removed *bss_rm =
 838                 (struct iwm_umac_notif_bss_removed *)buf;
 839         struct iwm_bss_info *bss, *next;
 840         u16 table_idx;
 841         int i;
 842
 843         for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
 844                 table_idx = (le16_to_cpu(bss_rm->entries[i])
 845                              & IWM_BSS_REMOVE_INDEX_MSK);
 846                 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 847                         if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
 848                                 struct ieee80211_mgmt *mgmt;
 849
 850                                 mgmt = (struct ieee80211_mgmt *)
 851                                         (bss->bss->frame_buf);
 852                                 IWM_DBG_MLME(iwm, ERR,
 853                                              "BSS removed: %pM\n",
 854                                              mgmt->bssid);
 855                                 list_del(&bss->node);
 856                                 kfree(bss->bss);
 857                                 kfree(bss);
 858                         }
 859         }
 860
 861         return 0;
 862 }
 863
 864 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
 865                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 866 {
 867         struct iwm_umac_notif_mgt_frame *mgt_frame =
 868                         (struct iwm_umac_notif_mgt_frame *)buf;
 869         struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
 870         u8 *ie;
 871
 872         IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
 873                     le16_to_cpu(mgt_frame->len));
 874
 875         if (ieee80211_is_assoc_req(mgt->frame_control)) {
 876                 ie = mgt->u.assoc_req.variable;;
 877                 iwm->req_ie_len =
 878                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 879                 kfree(iwm->req_ie);
 880                 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
 881                                       iwm->req_ie_len, GFP_KERNEL);
 882         } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
 883                 ie = mgt->u.reassoc_req.variable;;
 884                 iwm->req_ie_len =
 885                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 886                 kfree(iwm->req_ie);
 887                 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
 888                                       iwm->req_ie_len, GFP_KERNEL);
 889         } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
 890                 ie = mgt->u.assoc_resp.variable;;
 891                 iwm->resp_ie_len =
 892                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 893                 kfree(iwm->resp_ie);
 894                 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
 895                                        iwm->resp_ie_len, GFP_KERNEL);
 896         } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
 897                 ie = mgt->u.reassoc_resp.variable;;
 898                 iwm->resp_ie_len =
 899                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 900                 kfree(iwm->resp_ie);
 901                 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
 902                                        iwm->resp_ie_len, GFP_KERNEL);
 903         } else {
 904                 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
 905                         le16_to_cpu(mgt->frame_control));
 906                 return 0;
 907         }
 908
 909         return 0;
 910 }
 911
 912 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
 913                         unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 914 {
 915         struct iwm_umac_notif_wifi_if *notif =
 916                 (struct iwm_umac_notif_wifi_if *)buf;
 917
 918         switch (notif->status) {
 919         case WIFI_IF_NTFY_ASSOC_START:
 920                 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
 921         case WIFI_IF_NTFY_ASSOC_COMPLETE:
 922                 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
 923         case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
 924                 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
 925         case WIFI_IF_NTFY_CONNECTION_TERMINATED:
 926                 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
 927         case WIFI_IF_NTFY_SCAN_COMPLETE:
 928                 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
 929         case WIFI_IF_NTFY_STA_TABLE_CHANGE:
 930                 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
 931         case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
 932                 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
 933                 break;
 934         case WIFI_IF_NTFY_RADIO_PREEMPTION:
 935                 return iwm_mlme_medium_lost(iwm, buf, buf_size, cmd);
 936         case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
 937                 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
 938         case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
 939                 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
 940                 break;
 941         case WIFI_IF_NTFY_MGMT_FRAME:
 942                 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
 943         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
 944         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
 945         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
 946         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
 947         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
 948         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
 949         case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
 950         case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
 951         case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
 952         case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
 953                 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
 954                              notif->status);
 955                 break;
 956         default:
 957                 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
 958                 break;
 959         }
 960
 961         return 0;
 962 }
 963
 964 #define IWM_STATS_UPDATE_INTERVAL               (2 * HZ)
 965
 966 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
 967                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 968 {
 969         struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
 970         struct iw_statistics *wstats = &iwm->wstats;
 971         u16 max_rate = 0;
 972         int i;
 973
 974         IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
 975
 976         if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
 977                 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
 978                         max_rate = max_t(u16, max_rate,
 979                                          max(le16_to_cpu(stats->tx_rate[i]),
 980                                              le16_to_cpu(stats->rx_rate[i])));
 981                 }
 982                 /* UMAC passes rate info multiplies by 2 */
 983                 iwm->rate = max_rate >> 1;
 984         }
 985         iwm->txpower = le32_to_cpu(stats->tx_power);
 986
 987         wstats->status = 0;
 988
 989         wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
 990         wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
 991         wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
 992         wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
 993
 994         wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
 995
 996         /* according to cfg80211 */
 997         if (stats->rssi_dbm < -110)
 998                 wstats->qual.qual = 0;
 999         else if (stats->rssi_dbm > -40)
1000                 wstats->qual.qual = 70;
1001         else
1002                 wstats->qual.qual = stats->rssi_dbm + 110;
1003
1004         wstats->qual.level = stats->rssi_dbm;
1005         wstats->qual.noise = stats->noise_dbm;
1006         wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
1007
1008         schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
1009
1010         mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
1011
1012         return 0;
1013 }
1014
1015 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
1016                                 unsigned long buf_size,
1017                                 struct iwm_wifi_cmd *cmd)
1018 {
1019         struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
1020                 (struct iwm_umac_cmd_eeprom_proxy *)
1021                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1022         struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
1023         u32 hdr_offset = le32_to_cpu(hdr->offset);
1024         u32 hdr_len = le32_to_cpu(hdr->len);
1025         u32 hdr_type = le32_to_cpu(hdr->type);
1026
1027         IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
1028                     hdr_type, hdr_len, hdr_offset);
1029
1030         if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
1031                 return -EINVAL;
1032
1033         switch (hdr_type) {
1034         case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1035                 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1036                 break;
1037         case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1038         default:
1039                 return -ENOTSUPP;
1040         }
1041
1042         return 0;
1043 }
1044
1045 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1046                                      unsigned long buf_size,
1047                                      struct iwm_wifi_cmd *cmd)
1048 {
1049         struct iwm_umac_cmd_get_channel_list *ch_list =
1050                         (struct iwm_umac_cmd_get_channel_list *)
1051                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1052         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1053         struct ieee80211_supported_band *band;
1054         int i;
1055
1056         band = wiphy->bands[IEEE80211_BAND_2GHZ];
1057
1058         for (i = 0; i < band->n_channels; i++) {
1059                 unsigned long ch_mask_0 =
1060                         le32_to_cpu(ch_list->ch[0].channels_mask);
1061                 unsigned long ch_mask_2 =
1062                         le32_to_cpu(ch_list->ch[2].channels_mask);
1063
1064                 if (!test_bit(i, &ch_mask_0))
1065                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1066
1067                 if (!test_bit(i, &ch_mask_2))
1068                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1069         }
1070
1071         band = wiphy->bands[IEEE80211_BAND_5GHZ];
1072
1073         for (i = 0; i < min(band->n_channels, 32); i++) {
1074                 unsigned long ch_mask_1 =
1075                         le32_to_cpu(ch_list->ch[1].channels_mask);
1076                 unsigned long ch_mask_3 =
1077                         le32_to_cpu(ch_list->ch[3].channels_mask);
1078
1079                 if (!test_bit(i, &ch_mask_1))
1080                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1081
1082                 if (!test_bit(i, &ch_mask_3))
1083                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1084         }
1085
1086         return 0;
1087 }
1088
1089 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1090                                    unsigned long buf_size,
1091                                    struct iwm_wifi_cmd *cmd)
1092 {
1093         struct iwm_umac_wifi_if *hdr;
1094
1095         if (cmd == NULL) {
1096                 IWM_ERR(iwm, "Couldn't find expected wifi command\n");
1097                 return -EINVAL;
1098         }
1099
1100         hdr = (struct iwm_umac_wifi_if *)cmd->buf.payload;
1101
1102         IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1103                     "oid is 0x%x\n", hdr->oid);
1104
1105         if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1106                 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1107                 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1108         } else
1109                 return -EINVAL;
1110
1111         switch (hdr->oid) {
1112         case UMAC_WIFI_IF_CMD_SET_PROFILE:
1113                 iwm->umac_profile_active = 1;
1114                 break;
1115         default:
1116                 break;
1117         }
1118
1119         return 0;
1120 }
1121
1122 #define CT_KILL_DELAY (30 * HZ)
1123 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1124                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1125 {
1126         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1127         struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1128                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1129         u32 flags = le32_to_cpu(state->flags);
1130
1131         IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1132                  flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1133                  flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1134
1135         if (flags & IWM_CARD_STATE_CTKILL_DISABLED) {
1136                 /*
1137                  * We got a CTKILL event: We bring the interface down in
1138                  * oder to cool the device down, and try to bring it up
1139                  * 30 seconds later. If it's still too hot, we'll go through
1140                  * this code path again.
1141                  */
1142                 cancel_delayed_work_sync(&iwm->ct_kill_delay);
1143                 schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY);
1144         }
1145
1146         wiphy_rfkill_set_hw_state(wiphy, flags &
1147                                   (IWM_CARD_STATE_HW_DISABLED |
1148                                    IWM_CARD_STATE_CTKILL_DISABLED));
1149
1150         return 0;
1151 }
1152
1153 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1154                               unsigned long buf_size)
1155 {
1156         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1157         struct iwm_wifi_cmd *cmd;
1158         u8 source, cmd_id;
1159         u16 seq_num;
1160         u32 count;
1161         u8 resp;
1162
1163         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1164         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1165
1166         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1167         if (source >= IWM_SRC_NUM) {
1168                 IWM_CRIT(iwm, "invalid source %d\n", source);
1169                 return -EINVAL;
1170         }
1171
1172         count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1173         count += sizeof(struct iwm_umac_wifi_in_hdr) -
1174                  sizeof(struct iwm_dev_cmd_hdr);
1175         if (count > buf_size) {
1176                 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1177                 return -EINVAL;
1178         }
1179
1180         resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1181
1182         seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1183
1184         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1185                    cmd_id, source, seq_num);
1186
1187         /*
1188          * If this is a response to a previously sent command, there must
1189          * be a pending command for this sequence number.
1190          */
1191         cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1192
1193         /* Notify the caller only for sync commands. */
1194         switch (source) {
1195         case UMAC_HDI_IN_SOURCE_FHRX:
1196                 if (iwm->lmac_handlers[cmd_id] &&
1197                     test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1198                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1199                                               buf, count);
1200                 break;
1201         case UMAC_HDI_IN_SOURCE_FW:
1202                 if (iwm->umac_handlers[cmd_id] &&
1203                     test_bit(cmd_id, &iwm->umac_handler_map[0]))
1204                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1205                                               buf, count);
1206                 break;
1207         case UMAC_HDI_IN_SOURCE_UDMA:
1208                 break;
1209         }
1210
1211         return iwm_rx_handle_resp(iwm, buf, count, cmd);
1212 }
1213
1214 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1215                        struct iwm_wifi_cmd *cmd)
1216 {
1217         u8 source, cmd_id;
1218         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1219         int ret = 0;
1220
1221         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1222         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1223
1224         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1225
1226         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1227
1228         switch (source) {
1229         case UMAC_HDI_IN_SOURCE_FHRX:
1230                 if (iwm->lmac_handlers[cmd_id])
1231                         ret = iwm->lmac_handlers[cmd_id]
1232                                         (iwm, buf, buf_size, cmd);
1233                 break;
1234         case UMAC_HDI_IN_SOURCE_FW:
1235                 if (iwm->umac_handlers[cmd_id])
1236                         ret = iwm->umac_handlers[cmd_id]
1237                                         (iwm, buf, buf_size, cmd);
1238                 break;
1239         case UMAC_HDI_IN_SOURCE_UDMA:
1240                 ret = -EINVAL;
1241                 break;
1242         }
1243
1244         kfree(cmd);
1245
1246         return ret;
1247 }
1248
1249 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1250                                  unsigned long buf_size)
1251 {
1252         u8 seq_num;
1253         struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1254         struct iwm_nonwifi_cmd *cmd, *next;
1255
1256         seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1257
1258         /*
1259          * We received a non wifi answer.
1260          * Let's check if there's a pending command for it, and if so
1261          * replace the command payload with the buffer, and then wake the
1262          * callers up.
1263          * That means we only support synchronised non wifi command response
1264          * schemes.
1265          */
1266         list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1267                 if (cmd->seq_num == seq_num) {
1268                         cmd->resp_received = 1;
1269                         cmd->buf.len = buf_size;
1270                         memcpy(cmd->buf.hdr, buf, buf_size);
1271                         wake_up_interruptible(&iwm->nonwifi_queue);
1272                 }
1273
1274         return 0;
1275 }
1276
1277 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1278                               unsigned long buf_size)
1279 {
1280         int ret = 0;
1281         u8 op_code;
1282         unsigned long buf_offset = 0;
1283         struct iwm_udma_in_hdr *hdr;
1284
1285         /*
1286          * To allow for a more efficient bus usage, UMAC
1287          * messages are encapsulated into UDMA ones. This
1288          * way we can have several UMAC messages in one bus
1289          * transfer.
1290          * A UDMA frame size is always aligned on 16 bytes,
1291          * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1292          * word. This is how we parse a bus frame into several
1293          * UDMA ones.
1294          */
1295         while (buf_offset < buf_size) {
1296
1297                 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1298
1299                 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1300                         IWM_DBG_RX(iwm, DBG, "End of frame\n");
1301                         break;
1302                 }
1303
1304                 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1305
1306                 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1307
1308                 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1309                         ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1310                                                   buf_size - buf_offset);
1311                 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1312                         if (GET_VAL32(hdr->cmd,
1313                                       UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1314                             UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1315                                 IWM_ERR(iwm, "Incorrect hw signature\n");
1316                                 return -EINVAL;
1317                         }
1318                         ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1319                                                      buf_size - buf_offset);
1320                 } else {
1321                         IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1322                         ret |= -EINVAL;
1323                 }
1324
1325                 buf_offset += iwm_rx_resp_size(hdr);
1326         }
1327
1328         return ret;
1329 }
1330
1331 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1332 {
1333         struct iwm_udma_in_hdr *hdr;
1334
1335         hdr = (struct iwm_udma_in_hdr *)buf;
1336
1337         switch (le32_to_cpu(hdr->cmd)) {
1338         case UMAC_REBOOT_BARKER:
1339                 if (test_bit(IWM_STATUS_READY, &iwm->status)) {
1340                         IWM_ERR(iwm, "Unexpected BARKER\n");
1341
1342                         schedule_work(&iwm->reset_worker);
1343
1344                         return 0;
1345                 }
1346
1347                 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1348                                       IWM_SRC_UDMA, buf, buf_size);
1349         case UMAC_ACK_BARKER:
1350                 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1351                                       IWM_SRC_UDMA, NULL, 0);
1352         default:
1353                 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1354                 return iwm_rx_handle_umac(iwm, buf, buf_size);
1355         }
1356
1357         return 0;
1358 }
1359
1360 static const iwm_handler iwm_umac_handlers[] =
1361 {
1362         [UMAC_NOTIFY_OPCODE_ERROR]              = iwm_ntf_error,
1363         [UMAC_NOTIFY_OPCODE_ALIVE]              = iwm_ntf_umac_alive,
1364         [UMAC_NOTIFY_OPCODE_INIT_COMPLETE]      = iwm_ntf_init_complete,
1365         [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS]   = iwm_ntf_wifi_status,
1366         [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER]    = iwm_ntf_mlme,
1367         [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC]       = iwm_ntf_tx_credit_update,
1368         [UMAC_NOTIFY_OPCODE_RX_TICKET]          = iwm_ntf_rx_ticket,
1369         [UMAC_CMD_OPCODE_RESET]                 = iwm_ntf_umac_reset,
1370         [UMAC_NOTIFY_OPCODE_STATS]              = iwm_ntf_statistics,
1371         [UMAC_CMD_OPCODE_EEPROM_PROXY]          = iwm_ntf_eeprom_proxy,
1372         [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST]    = iwm_ntf_channel_info_list,
1373         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1374         [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER]       = iwm_ntf_wifi_if_wrapper,
1375 };
1376
1377 static const iwm_handler iwm_lmac_handlers[] =
1378 {
1379         [REPLY_TX]                              = iwm_ntf_tx,
1380         [REPLY_ALIVE]                           = iwm_ntf_lmac_version,
1381         [CALIBRATION_RES_NOTIFICATION]          = iwm_ntf_calib_res,
1382         [CALIBRATION_COMPLETE_NOTIFICATION]     = iwm_ntf_calib_complete,
1383         [CALIBRATION_CFG_CMD]                   = iwm_ntf_calib_cfg,
1384         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1385         [CARD_STATE_NOTIFICATION]               = iwm_ntf_card_state,
1386 };
1387
1388 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1389 {
1390         iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1391         iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1392 }
1393
1394 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1395 {
1396         struct ieee80211_hdr *hdr;
1397         unsigned int hdr_len;
1398
1399         hdr = (struct ieee80211_hdr *)skb->data;
1400
1401         if (!ieee80211_has_protected(hdr->frame_control))
1402                 return;
1403
1404         hdr_len = ieee80211_hdrlen(hdr->frame_control);
1405         if (hdr_total_len <= hdr_len)
1406                 return;
1407
1408         memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1409         skb_pull(skb, (hdr_total_len - hdr_len));
1410 }
1411
1412 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1413                                  struct iwm_rx_packet *packet,
1414                                  struct iwm_rx_ticket_node *ticket_node)
1415 {
1416         u32 payload_offset = 0, payload_len;
1417         struct iwm_rx_ticket *ticket = ticket_node->ticket;
1418         struct iwm_rx_mpdu_hdr *mpdu_hdr;
1419         struct ieee80211_hdr *hdr;
1420
1421         mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1422         payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1423         /* Padding is 0 or 2 bytes */
1424         payload_len = le16_to_cpu(mpdu_hdr->len) +
1425                 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1426         payload_len -= ticket->tail_len;
1427
1428         IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1429                    "ticket offset:%d ticket tail len:%d\n",
1430                    payload_len, payload_offset, ticket->payload_offset,
1431                    ticket->tail_len);
1432
1433         IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1434
1435         skb_pull(packet->skb, payload_offset);
1436         skb_trim(packet->skb, payload_len);
1437
1438         iwm_remove_iv(packet->skb, ticket->payload_offset);
1439
1440         hdr = (struct ieee80211_hdr *) packet->skb->data;
1441         if (ieee80211_is_data_qos(hdr->frame_control)) {
1442                 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1443                  * to the qos_ctl field in IEEE 802.11 headers. */
1444                 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1445                         packet->skb->data,
1446                         ieee80211_hdrlen(hdr->frame_control) -
1447                         IEEE80211_QOS_CTL_LEN);
1448                 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1449                                 IEEE80211_QOS_CTL_LEN + 2);
1450                 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1451         }
1452
1453         IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1454                     packet->skb->data, packet->skb->len);
1455 }
1456
1457 static void classify8023(struct sk_buff *skb)
1458 {
1459         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1460
1461         if (ieee80211_is_data_qos(hdr->frame_control)) {
1462                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1463                 /* frame has qos control */
1464                 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1465         } else {
1466                 skb->priority = 0;
1467         }
1468 }
1469
1470 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1471                                   struct iwm_rx_packet *packet,
1472                                   struct iwm_rx_ticket_node *ticket_node)
1473 {
1474         int ret;
1475         struct sk_buff *skb = packet->skb;
1476         struct wireless_dev *wdev = iwm_to_wdev(iwm);
1477         struct net_device *ndev = iwm_to_ndev(iwm);
1478
1479         IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1480
1481         switch (le16_to_cpu(ticket_node->ticket->action)) {
1482         case IWM_RX_TICKET_RELEASE:
1483                 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1484                 classify8023(skb);
1485                 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1486                 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1487                 if (ret < 0) {
1488                         IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1489                                    "%d\n", ret);
1490                         break;
1491                 }
1492
1493                 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1494
1495                 skb->dev = iwm_to_ndev(iwm);
1496                 skb->protocol = eth_type_trans(skb, ndev);
1497                 skb->ip_summed = CHECKSUM_NONE;
1498                 memset(skb->cb, 0, sizeof(skb->cb));
1499
1500                 ndev->stats.rx_packets++;
1501                 ndev->stats.rx_bytes += skb->len;
1502
1503                 if (netif_rx_ni(skb) == NET_RX_DROP) {
1504                         IWM_ERR(iwm, "Packet dropped\n");
1505                         ndev->stats.rx_dropped++;
1506                 }
1507                 break;
1508         case IWM_RX_TICKET_DROP:
1509                 IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n",
1510                            le16_to_cpu(ticket_node->ticket->flags));
1511                 kfree_skb(packet->skb);
1512                 break;
1513         default:
1514                 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1515                         le16_to_cpu(ticket_node->ticket->action));
1516                 kfree_skb(packet->skb);
1517         }
1518
1519         kfree(packet);
1520         iwm_rx_ticket_node_free(ticket_node);
1521 }
1522
1523 /*
1524  * Rx data processing:
1525  *
1526  * We're receiving Rx packet from the LMAC, and Rx ticket from
1527  * the UMAC.
1528  * To forward a target data packet upstream (i.e. to the
1529  * kernel network stack), we must have received an Rx ticket
1530  * that tells us we're allowed to release this packet (ticket
1531  * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1532  * among other things, where valid data actually starts in the Rx
1533  * packet.
1534  */
1535 void iwm_rx_worker(struct work_struct *work)
1536 {
1537         struct iwm_priv *iwm;
1538         struct iwm_rx_ticket_node *ticket, *next;
1539
1540         iwm = container_of(work, struct iwm_priv, rx_worker);
1541
1542         /*
1543          * We go through the tickets list and if there is a pending
1544          * packet for it, we push it upstream.
1545          * We stop whenever a ticket is missing its packet, as we're
1546          * supposed to send the packets in order.
1547          */
1548         list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1549                 struct iwm_rx_packet *packet =
1550                         iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1551
1552                 if (!packet) {
1553                         IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1554                                    "to be handled first\n",
1555                                    le16_to_cpu(ticket->ticket->id));
1556                         return;
1557                 }
1558
1559                 list_del(&ticket->node);
1560                 list_del(&packet->node);
1561                 iwm_rx_process_packet(iwm, packet, ticket);
1562         }
1563 }
1564