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/sched.h>
  42 #include <linux/etherdevice.h>
  43 #include <linux/wireless.h>
  44 #include <linux/ieee80211.h>
  45 #include <linux/if_arp.h>
  46 #include <linux/list.h>
  47 #include <net/iw_handler.h>
  48
  49 #include "iwm.h"
  50 #include "debug.h"
  51 #include "hal.h"
  52 #include "umac.h"
  53 #include "lmac.h"
  54 #include "commands.h"
  55 #include "rx.h"
  56 #include "cfg80211.h"
  57 #include "eeprom.h"
  58
  59 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
  60 {
  61         if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
  62             (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
  63                 return -EINVAL;
  64
  65         return 0;
  66 }
  67
  68 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
  69 {
  70         return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
  71                      16);
  72 }
  73
  74 /*
  75  * Notification handlers:
  76  *
  77  * For every possible notification we can receive from the
  78  * target, we have a handler.
  79  * When we get a target notification, and there is no one
  80  * waiting for it, it's just processed through the rx code
  81  * path:
  82  *
  83  * iwm_rx_handle()
  84  *  -> iwm_rx_handle_umac()
  85  *      -> iwm_rx_handle_wifi()
  86  *          -> iwm_rx_handle_resp()
  87  *              -> iwm_ntf_*()
  88  *
  89  *      OR
  90  *
  91  *      -> iwm_rx_handle_non_wifi()
  92  *
  93  * If there are processes waiting for this notification, then
  94  * iwm_rx_handle_wifi() just wakes those processes up and they
  95  * grab the pending notification.
  96  */
  97 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
  98                          unsigned long buf_size, struct iwm_wifi_cmd *cmd)
  99 {
 100         struct iwm_umac_notif_error *error;
 101         struct iwm_fw_error_hdr *fw_err;
 102
 103         error = (struct iwm_umac_notif_error *)buf;
 104         fw_err = &error->err;
 105
 106         memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
 107
 108         IWM_ERR(iwm, "%cMAC FW ERROR:\n",
 109          (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
 110         IWM_ERR(iwm, "\tCategory:    %d\n", le32_to_cpu(fw_err->category));
 111         IWM_ERR(iwm, "\tStatus:      0x%x\n", le32_to_cpu(fw_err->status));
 112         IWM_ERR(iwm, "\tPC:          0x%x\n", le32_to_cpu(fw_err->pc));
 113         IWM_ERR(iwm, "\tblink1:      %d\n", le32_to_cpu(fw_err->blink1));
 114         IWM_ERR(iwm, "\tblink2:      %d\n", le32_to_cpu(fw_err->blink2));
 115         IWM_ERR(iwm, "\tilink1:      %d\n", le32_to_cpu(fw_err->ilink1));
 116         IWM_ERR(iwm, "\tilink2:      %d\n", le32_to_cpu(fw_err->ilink2));
 117         IWM_ERR(iwm, "\tData1:       0x%x\n", le32_to_cpu(fw_err->data1));
 118         IWM_ERR(iwm, "\tData2:       0x%x\n", le32_to_cpu(fw_err->data2));
 119         IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
 120         IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
 121         IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
 122         IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
 123
 124         iwm_resetting(iwm);
 125
 126         return 0;
 127 }
 128
 129 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
 130                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 131 {
 132         struct iwm_umac_notif_alive *alive_resp =
 133                         (struct iwm_umac_notif_alive *)(buf);
 134         u16 status = le16_to_cpu(alive_resp->status);
 135
 136         if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
 137                 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
 138                 return -EIO;
 139         }
 140
 141         iwm_tx_credit_init_pools(iwm, alive_resp);
 142
 143         return 0;
 144 }
 145
 146 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
 147                                  unsigned long buf_size,
 148                                  struct iwm_wifi_cmd *cmd)
 149 {
 150         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 151         struct iwm_umac_notif_init_complete *init_complete =
 152                         (struct iwm_umac_notif_init_complete *)(buf);
 153         u16 status = le16_to_cpu(init_complete->status);
 154         bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
 155
 156         if (blocked)
 157                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
 158         else
 159                 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
 160
 161         wiphy_rfkill_set_hw_state(wiphy, blocked);
 162
 163         return 0;
 164 }
 165
 166 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
 167                                     unsigned long buf_size,
 168                                     struct iwm_wifi_cmd *cmd)
 169 {
 170         int pool_nr, total_freed_pages;
 171         unsigned long pool_map;
 172         int i, id;
 173         struct iwm_umac_notif_page_dealloc *dealloc =
 174                         (struct iwm_umac_notif_page_dealloc *)buf;
 175
 176         pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
 177         pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
 178
 179         IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
 180                    "update map 0x%lx\n", pool_nr, pool_map);
 181
 182         spin_lock(&iwm->tx_credit.lock);
 183
 184         for (i = 0; i < pool_nr; i++) {
 185                 id = GET_VAL32(dealloc->grp_info[i],
 186                                UMAC_DEALLOC_NTFY_GROUP_NUM);
 187                 if (test_bit(id, &pool_map)) {
 188                         total_freed_pages = GET_VAL32(dealloc->grp_info[i],
 189                                               UMAC_DEALLOC_NTFY_PAGE_CNT);
 190                         iwm_tx_credit_inc(iwm, id, total_freed_pages);
 191                 }
 192         }
 193
 194         spin_unlock(&iwm->tx_credit.lock);
 195
 196         return 0;
 197 }
 198
 199 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
 200                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 201 {
 202         IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
 203
 204         return 0;
 205 }
 206
 207 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
 208                                 unsigned long buf_size,
 209                                 struct iwm_wifi_cmd *cmd)
 210 {
 211         IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
 212
 213         return 0;
 214 }
 215
 216 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
 217                       unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 218 {
 219         struct iwm_lmac_tx_resp *tx_resp;
 220         struct iwm_umac_wifi_in_hdr *hdr;
 221
 222         tx_resp = (struct iwm_lmac_tx_resp *)
 223                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 224         hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 225
 226         IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
 227
 228         IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
 229                    le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
 230         IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
 231         IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
 232                    le16_to_cpu(tx_resp->retry_cnt));
 233         IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
 234         IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
 235                    le16_to_cpu(tx_resp->byte_cnt));
 236         IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
 237
 238         return 0;
 239 }
 240
 241
 242 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
 243                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 244 {
 245         u8 opcode;
 246         u8 *calib_buf;
 247         struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
 248                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 249
 250         opcode = hdr->opcode;
 251
 252         BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
 253                opcode < PHY_CALIBRATE_OPCODES_NUM);
 254
 255         IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
 256                     opcode);
 257
 258         buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
 259         calib_buf = iwm->calib_res[opcode].buf;
 260
 261         if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
 262                 kfree(calib_buf);
 263                 calib_buf = kzalloc(buf_size, GFP_KERNEL);
 264                 if (!calib_buf) {
 265                         IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
 266                         return -ENOMEM;
 267                 }
 268                 iwm->calib_res[opcode].buf = calib_buf;
 269                 iwm->calib_res[opcode].size = buf_size;
 270         }
 271
 272         memcpy(calib_buf, hdr, buf_size);
 273         set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
 274
 275         return 0;
 276 }
 277
 278 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
 279                                   unsigned long buf_size,
 280                                   struct iwm_wifi_cmd *cmd)
 281 {
 282         IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
 283
 284         return 0;
 285 }
 286
 287 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
 288                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 289 {
 290         struct iwm_lmac_cal_cfg_resp *cal_resp;
 291
 292         cal_resp = (struct iwm_lmac_cal_cfg_resp *)
 293                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
 294
 295         IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
 296                     le32_to_cpu(cal_resp->status));
 297
 298         return 0;
 299 }
 300
 301 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
 302                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 303 {
 304         struct iwm_umac_notif_wifi_status *status =
 305                 (struct iwm_umac_notif_wifi_status *)buf;
 306
 307         iwm->core_enabled |= le16_to_cpu(status->status);
 308
 309         return 0;
 310 }
 311
 312 static struct iwm_rx_ticket_node *
 313 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
 314 {
 315         struct iwm_rx_ticket_node *ticket_node;
 316
 317         ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
 318         if (!ticket_node) {
 319                 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
 320                 return ERR_PTR(-ENOMEM);
 321         }
 322
 323         ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
 324         if (!ticket_node->ticket) {
 325                 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
 326                 kfree(ticket_node);
 327                 return ERR_PTR(-ENOMEM);
 328         }
 329
 330         memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
 331         INIT_LIST_HEAD(&ticket_node->node);
 332
 333         return ticket_node;
 334 }
 335
 336 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
 337 {
 338         kfree(ticket_node->ticket);
 339         kfree(ticket_node);
 340 }
 341
 342 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
 343 {
 344         u8 id_hash = IWM_RX_ID_GET_HASH(id);
 345         struct list_head *packet_list;
 346         struct iwm_rx_packet *packet, *next;
 347
 348         packet_list = &iwm->rx_packets[id_hash];
 349
 350         list_for_each_entry_safe(packet, next, packet_list, node)
 351                 if (packet->id == id)
 352                         return packet;
 353
 354         return NULL;
 355 }
 356
 357 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
 358                                                  u32 size, u16 id)
 359 {
 360         struct iwm_rx_packet *packet;
 361
 362         packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
 363         if (!packet) {
 364                 IWM_ERR(iwm, "Couldn't allocate packet\n");
 365                 return ERR_PTR(-ENOMEM);
 366         }
 367
 368         packet->skb = dev_alloc_skb(size);
 369         if (!packet->skb) {
 370                 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
 371                 kfree(packet);
 372                 return ERR_PTR(-ENOMEM);
 373         }
 374
 375         packet->pkt_size = size;
 376
 377         skb_put(packet->skb, size);
 378         memcpy(packet->skb->data, buf, size);
 379         INIT_LIST_HEAD(&packet->node);
 380         packet->id = id;
 381
 382         return packet;
 383 }
 384
 385 void iwm_rx_free(struct iwm_priv *iwm)
 386 {
 387         struct iwm_rx_ticket_node *ticket, *nt;
 388         struct iwm_rx_packet *packet, *np;
 389         int i;
 390
 391         list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
 392                 list_del(&ticket->node);
 393                 iwm_rx_ticket_node_free(ticket);
 394         }
 395
 396         for (i = 0; i < IWM_RX_ID_HASH; i++) {
 397                 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
 398                                          node) {
 399                         list_del(&packet->node);
 400                         kfree_skb(packet->skb);
 401                         kfree(packet);
 402                 }
 403         }
 404 }
 405
 406 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
 407                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 408 {
 409         struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
 410                 (struct iwm_umac_notif_rx_ticket *)buf;
 411         struct iwm_rx_ticket *ticket =
 412                 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
 413         int i, schedule_rx = 0;
 414
 415         for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
 416                 struct iwm_rx_ticket_node *ticket_node;
 417
 418                 switch (le16_to_cpu(ticket->action)) {
 419                 case IWM_RX_TICKET_RELEASE:
 420                 case IWM_RX_TICKET_DROP:
 421                         /* We can push the packet to the stack */
 422                         ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
 423                         if (IS_ERR(ticket_node))
 424                                 return PTR_ERR(ticket_node);
 425
 426                         IWM_DBG_RX(iwm, DBG, "TICKET %s(%d)\n",
 427                                    ticket->action ==  IWM_RX_TICKET_RELEASE ?
 428                                    "RELEASE" : "DROP",
 429                                    ticket->id);
 430                         list_add_tail(&ticket_node->node, &iwm->rx_tickets);
 431
 432                         /*
 433                          * We received an Rx ticket, most likely there's
 434                          * a packet pending for it, it's not worth going
 435                          * through the packet hash list to double check.
 436                          * Let's just fire the rx worker..
 437                          */
 438                         schedule_rx = 1;
 439
 440                         break;
 441
 442                 default:
 443                         IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
 444                                 ticket->action);
 445                 }
 446
 447                 ticket++;
 448         }
 449
 450         if (schedule_rx)
 451                 queue_work(iwm->rx_wq, &iwm->rx_worker);
 452
 453         return 0;
 454 }
 455
 456 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
 457                              unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 458 {
 459         struct iwm_umac_wifi_in_hdr *wifi_hdr;
 460         struct iwm_rx_packet *packet;
 461         u16 id, buf_offset;
 462         u32 packet_size;
 463
 464         IWM_DBG_RX(iwm, DBG, "\n");
 465
 466         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
 467         id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
 468         buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
 469         packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
 470
 471         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
 472                    wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
 473         IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
 474         IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
 475
 476         packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
 477         if (IS_ERR(packet))
 478                 return PTR_ERR(packet);
 479
 480         list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
 481
 482         /* We might (unlikely) have received the packet _after_ the ticket */
 483         queue_work(iwm->rx_wq, &iwm->rx_worker);
 484
 485         return 0;
 486 }
 487
 488 /* MLME handlers */
 489 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
 490                                 unsigned long buf_size,
 491                                 struct iwm_wifi_cmd *cmd)
 492 {
 493         struct iwm_umac_notif_assoc_start *start;
 494
 495         start = (struct iwm_umac_notif_assoc_start *)buf;
 496
 497         IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
 498                      start->bssid, le32_to_cpu(start->roam_reason));
 499
 500         wake_up_interruptible(&iwm->mlme_queue);
 501
 502         return 0;
 503 }
 504
 505 static u8 iwm_is_open_wep_profile(struct iwm_priv *iwm)
 506 {
 507         if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 ||
 508              iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) &&
 509             (iwm->umac_profile->sec.ucast_cipher ==
 510              iwm->umac_profile->sec.mcast_cipher) &&
 511             (iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN))
 512                return 1;
 513
 514        return 0;
 515 }
 516
 517 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
 518                                    unsigned long buf_size,
 519                                    struct iwm_wifi_cmd *cmd)
 520 {
 521         struct iwm_umac_notif_assoc_complete *complete =
 522                 (struct iwm_umac_notif_assoc_complete *)buf;
 523
 524         IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
 525                      complete->bssid, complete->status);
 526
 527         switch (le32_to_cpu(complete->status)) {
 528         case UMAC_ASSOC_COMPLETE_SUCCESS:
 529                 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 530                 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
 531                 iwm->channel = complete->channel;
 532
 533                 /* Internal roaming state, avoid notifying SME. */
 534                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 535                     && iwm->conf.mode == UMAC_MODE_BSS) {
 536                         cancel_delayed_work(&iwm->disconnect);
 537                         cfg80211_roamed(iwm_to_ndev(iwm),
 538                                         complete->bssid,
 539                                         iwm->req_ie, iwm->req_ie_len,
 540                                         iwm->resp_ie, iwm->resp_ie_len,
 541                                         GFP_KERNEL);
 542                         break;
 543                 }
 544
 545                 iwm_link_on(iwm);
 546
 547                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 548                         goto ibss;
 549
 550                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 551                         cfg80211_connect_result(iwm_to_ndev(iwm),
 552                                                 complete->bssid,
 553                                                 iwm->req_ie, iwm->req_ie_len,
 554                                                 iwm->resp_ie, iwm->resp_ie_len,
 555                                                 WLAN_STATUS_SUCCESS,
 556                                                 GFP_KERNEL);
 557                 else
 558                         cfg80211_roamed(iwm_to_ndev(iwm),
 559                                         complete->bssid,
 560                                         iwm->req_ie, iwm->req_ie_len,
 561                                         iwm->resp_ie, iwm->resp_ie_len,
 562                                         GFP_KERNEL);
 563                 break;
 564         case UMAC_ASSOC_COMPLETE_FAILURE:
 565                 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 566                 memset(iwm->bssid, 0, ETH_ALEN);
 567                 iwm->channel = 0;
 568
 569                 /* Internal roaming state, avoid notifying SME. */
 570                 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
 571                     && iwm->conf.mode == UMAC_MODE_BSS) {
 572                         cancel_delayed_work(&iwm->disconnect);
 573                         break;
 574                 }
 575
 576                 iwm_link_off(iwm);
 577
 578                 if (iwm->conf.mode == UMAC_MODE_IBSS)
 579                         goto ibss;
 580
 581                 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
 582                         if (!iwm_is_open_wep_profile(iwm)) {
 583                                 cfg80211_connect_result(iwm_to_ndev(iwm),
 584                                                complete->bssid,
 585                                                NULL, 0, NULL, 0,
 586                                                WLAN_STATUS_UNSPECIFIED_FAILURE,
 587                                                GFP_KERNEL);
 588                         } else {
 589                                 /* Let's try shared WEP auth */
 590                                 IWM_ERR(iwm, "Trying WEP shared auth\n");
 591                                 schedule_work(&iwm->auth_retry_worker);
 592                         }
 593                 else
 594                         cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
 595                                               GFP_KERNEL);
 596                 break;
 597         default:
 598                 break;
 599         }
 600
 601         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 602         return 0;
 603
 604  ibss:
 605         cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
 606         clear_bit(IWM_STATUS_RESETTING, &iwm->status);
 607         return 0;
 608 }
 609
 610 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
 611                                        unsigned long buf_size,
 612                                        struct iwm_wifi_cmd *cmd)
 613 {
 614         struct iwm_umac_notif_profile_invalidate *invalid;
 615         u32 reason;
 616
 617         invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
 618         reason = le32_to_cpu(invalid->reason);
 619
 620         IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
 621
 622         if (reason != UMAC_PROFILE_INVALID_REQUEST &&
 623             test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
 624                 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
 625                                         0, WLAN_STATUS_UNSPECIFIED_FAILURE,
 626                                         GFP_KERNEL);
 627
 628         clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
 629         clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
 630
 631         iwm->umac_profile_active = 0;
 632         memset(iwm->bssid, 0, ETH_ALEN);
 633         iwm->channel = 0;
 634
 635         iwm_link_off(iwm);
 636
 637         wake_up_interruptible(&iwm->mlme_queue);
 638
 639         return 0;
 640 }
 641
 642 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
 643
 644 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
 645                                           unsigned long buf_size,
 646                                           struct iwm_wifi_cmd *cmd)
 647 {
 648         IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
 649
 650         schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
 651
 652         return 0;
 653 }
 654
 655 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
 656                                   unsigned long buf_size,
 657                                   struct iwm_wifi_cmd *cmd)
 658 {
 659         int ret;
 660         struct iwm_umac_notif_scan_complete *scan_complete =
 661                 (struct iwm_umac_notif_scan_complete *)buf;
 662         u32 result = le32_to_cpu(scan_complete->result);
 663
 664         IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
 665                      le32_to_cpu(scan_complete->type),
 666                      le32_to_cpu(scan_complete->result),
 667                      scan_complete->seq_num);
 668
 669         if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
 670                 IWM_ERR(iwm, "Scan complete while device not scanning\n");
 671                 return -EIO;
 672         }
 673         if (!iwm->scan_request)
 674                 return 0;
 675
 676         ret = iwm_cfg80211_inform_bss(iwm);
 677
 678         cfg80211_scan_done(iwm->scan_request,
 679                            (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
 680         iwm->scan_request = NULL;
 681
 682         return ret;
 683 }
 684
 685 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
 686                                      unsigned long buf_size,
 687                                      struct iwm_wifi_cmd *cmd)
 688 {
 689         struct iwm_umac_notif_sta_info *umac_sta =
 690                         (struct iwm_umac_notif_sta_info *)buf;
 691         struct iwm_sta_info *sta;
 692         int i;
 693
 694         switch (le32_to_cpu(umac_sta->opcode)) {
 695         case UMAC_OPCODE_ADD_MODIFY:
 696                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 697
 698                 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
 699                              "addr = %pM, qos = %d\n",
 700                              sta->valid ? "Modify" : "Add",
 701                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 702                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 703                              umac_sta->mac_addr,
 704                              umac_sta->flags & UMAC_STA_FLAG_QOS);
 705
 706                 sta->valid = 1;
 707                 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
 708                 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
 709                 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
 710                 break;
 711         case UMAC_OPCODE_REMOVE:
 712                 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
 713                              "addr = %pM\n",
 714                              GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
 715                              GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
 716                              umac_sta->mac_addr);
 717
 718                 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
 719
 720                 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
 721                         sta->valid = 0;
 722
 723                 break;
 724         case UMAC_OPCODE_CLEAR_ALL:
 725                 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
 726                         iwm->sta_table[i].valid = 0;
 727
 728                 break;
 729         default:
 730                 break;
 731         }
 732
 733         return 0;
 734 }
 735
 736 static int iwm_mlme_medium_lost(struct iwm_priv *iwm, u8 *buf,
 737                                 unsigned long buf_size,
 738                                 struct iwm_wifi_cmd *cmd)
 739 {
 740         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 741
 742         IWM_DBG_NTF(iwm, DBG, "WiFi/WiMax coexistence radio is OFF\n");
 743
 744         wiphy_rfkill_set_hw_state(wiphy, true);
 745
 746         return 0;
 747 }
 748
 749 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
 750                                      unsigned long buf_size,
 751                                      struct iwm_wifi_cmd *cmd)
 752 {
 753         struct wiphy *wiphy = iwm_to_wiphy(iwm);
 754         struct ieee80211_mgmt *mgmt;
 755         struct iwm_umac_notif_bss_info *umac_bss =
 756                         (struct iwm_umac_notif_bss_info *)buf;
 757         struct ieee80211_channel *channel;
 758         struct ieee80211_supported_band *band;
 759         struct iwm_bss_info *bss, *next;
 760         s32 signal;
 761         int freq;
 762         u16 frame_len = le16_to_cpu(umac_bss->frame_len);
 763         size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
 764
 765         mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
 766
 767         IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
 768         IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
 769         IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
 770                      le32_to_cpu(umac_bss->timestamp));
 771         IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
 772                      le16_to_cpu(umac_bss->table_idx));
 773         IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
 774         IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
 775         IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
 776         IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
 777
 778         list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 779                 if (bss->bss->table_idx == umac_bss->table_idx)
 780                         break;
 781
 782         if (&bss->node != &iwm->bss_list) {
 783                 /* Remove the old BSS entry, we will add it back later. */
 784                 list_del(&bss->node);
 785                 kfree(bss->bss);
 786         } else {
 787                 /* New BSS entry */
 788
 789                 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
 790                 if (!bss) {
 791                         IWM_ERR(iwm, "Couldn't allocate bss_info\n");
 792                         return -ENOMEM;
 793                 }
 794         }
 795
 796         bss->bss = kzalloc(bss_len, GFP_KERNEL);
 797         if (!bss) {
 798                 kfree(bss);
 799                 IWM_ERR(iwm, "Couldn't allocate bss\n");
 800                 return -ENOMEM;
 801         }
 802
 803         INIT_LIST_HEAD(&bss->node);
 804         memcpy(bss->bss, umac_bss, bss_len);
 805
 806         if (umac_bss->band == UMAC_BAND_2GHZ)
 807                 band = wiphy->bands[IEEE80211_BAND_2GHZ];
 808         else if (umac_bss->band == UMAC_BAND_5GHZ)
 809                 band = wiphy->bands[IEEE80211_BAND_5GHZ];
 810         else {
 811                 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
 812                 goto err;
 813         }
 814
 815         freq = ieee80211_channel_to_frequency(umac_bss->channel);
 816         channel = ieee80211_get_channel(wiphy, freq);
 817         signal = umac_bss->rssi * 100;
 818
 819         bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
 820                                                  mgmt, frame_len,
 821                                                  signal, GFP_KERNEL);
 822         if (!bss->cfg_bss)
 823                 goto err;
 824
 825         list_add_tail(&bss->node, &iwm->bss_list);
 826
 827         return 0;
 828  err:
 829         kfree(bss->bss);
 830         kfree(bss);
 831
 832         return -EINVAL;
 833 }
 834
 835 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
 836                                unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 837 {
 838         struct iwm_umac_notif_bss_removed *bss_rm =
 839                 (struct iwm_umac_notif_bss_removed *)buf;
 840         struct iwm_bss_info *bss, *next;
 841         u16 table_idx;
 842         int i;
 843
 844         for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
 845                 table_idx = (le16_to_cpu(bss_rm->entries[i])
 846                              & IWM_BSS_REMOVE_INDEX_MSK);
 847                 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
 848                         if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
 849                                 struct ieee80211_mgmt *mgmt;
 850
 851                                 mgmt = (struct ieee80211_mgmt *)
 852                                         (bss->bss->frame_buf);
 853                                 IWM_DBG_MLME(iwm, ERR,
 854                                              "BSS removed: %pM\n",
 855                                              mgmt->bssid);
 856                                 list_del(&bss->node);
 857                                 kfree(bss->bss);
 858                                 kfree(bss);
 859                         }
 860         }
 861
 862         return 0;
 863 }
 864
 865 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
 866                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 867 {
 868         struct iwm_umac_notif_mgt_frame *mgt_frame =
 869                         (struct iwm_umac_notif_mgt_frame *)buf;
 870         struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
 871         u8 *ie;
 872
 873         IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
 874                     le16_to_cpu(mgt_frame->len));
 875
 876         if (ieee80211_is_assoc_req(mgt->frame_control)) {
 877                 ie = mgt->u.assoc_req.variable;;
 878                 iwm->req_ie_len =
 879                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 880                 kfree(iwm->req_ie);
 881                 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
 882                                       iwm->req_ie_len, GFP_KERNEL);
 883         } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
 884                 ie = mgt->u.reassoc_req.variable;;
 885                 iwm->req_ie_len =
 886                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 887                 kfree(iwm->req_ie);
 888                 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
 889                                       iwm->req_ie_len, GFP_KERNEL);
 890         } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
 891                 ie = mgt->u.assoc_resp.variable;;
 892                 iwm->resp_ie_len =
 893                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 894                 kfree(iwm->resp_ie);
 895                 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
 896                                        iwm->resp_ie_len, GFP_KERNEL);
 897         } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
 898                 ie = mgt->u.reassoc_resp.variable;;
 899                 iwm->resp_ie_len =
 900                                 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
 901                 kfree(iwm->resp_ie);
 902                 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
 903                                        iwm->resp_ie_len, GFP_KERNEL);
 904         } else {
 905                 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
 906                         le16_to_cpu(mgt->frame_control));
 907                 return 0;
 908         }
 909
 910         return 0;
 911 }
 912
 913 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
 914                         unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 915 {
 916         struct iwm_umac_notif_wifi_if *notif =
 917                 (struct iwm_umac_notif_wifi_if *)buf;
 918
 919         switch (notif->status) {
 920         case WIFI_IF_NTFY_ASSOC_START:
 921                 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
 922         case WIFI_IF_NTFY_ASSOC_COMPLETE:
 923                 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
 924         case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
 925                 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
 926         case WIFI_IF_NTFY_CONNECTION_TERMINATED:
 927                 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
 928         case WIFI_IF_NTFY_SCAN_COMPLETE:
 929                 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
 930         case WIFI_IF_NTFY_STA_TABLE_CHANGE:
 931                 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
 932         case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
 933                 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
 934                 break;
 935         case WIFI_IF_NTFY_RADIO_PREEMPTION:
 936                 return iwm_mlme_medium_lost(iwm, buf, buf_size, cmd);
 937         case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
 938                 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
 939         case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
 940                 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
 941                 break;
 942         case WIFI_IF_NTFY_MGMT_FRAME:
 943                 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
 944         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
 945         case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
 946         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
 947         case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
 948         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
 949         case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
 950         case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
 951         case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
 952         case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
 953         case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
 954                 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
 955                              notif->status);
 956                 break;
 957         default:
 958                 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
 959                 break;
 960         }
 961
 962         return 0;
 963 }
 964
 965 #define IWM_STATS_UPDATE_INTERVAL               (2 * HZ)
 966
 967 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
 968                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
 969 {
 970         struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
 971         struct iw_statistics *wstats = &iwm->wstats;
 972         u16 max_rate = 0;
 973         int i;
 974
 975         IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
 976
 977         if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
 978                 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
 979                         max_rate = max_t(u16, max_rate,
 980                                          max(le16_to_cpu(stats->tx_rate[i]),
 981                                              le16_to_cpu(stats->rx_rate[i])));
 982                 }
 983                 /* UMAC passes rate info multiplies by 2 */
 984                 iwm->rate = max_rate >> 1;
 985         }
 986         iwm->txpower = le32_to_cpu(stats->tx_power);
 987
 988         wstats->status = 0;
 989
 990         wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
 991         wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
 992         wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
 993         wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
 994
 995         wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
 996
 997         /* according to cfg80211 */
 998         if (stats->rssi_dbm < -110)
 999                 wstats->qual.qual = 0;
1000         else if (stats->rssi_dbm > -40)
1001                 wstats->qual.qual = 70;
1002         else
1003                 wstats->qual.qual = stats->rssi_dbm + 110;
1004
1005         wstats->qual.level = stats->rssi_dbm;
1006         wstats->qual.noise = stats->noise_dbm;
1007         wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
1008
1009         schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
1010
1011         mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
1012
1013         return 0;
1014 }
1015
1016 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
1017                                 unsigned long buf_size,
1018                                 struct iwm_wifi_cmd *cmd)
1019 {
1020         struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
1021                 (struct iwm_umac_cmd_eeprom_proxy *)
1022                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1023         struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
1024         u32 hdr_offset = le32_to_cpu(hdr->offset);
1025         u32 hdr_len = le32_to_cpu(hdr->len);
1026         u32 hdr_type = le32_to_cpu(hdr->type);
1027
1028         IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
1029                     hdr_type, hdr_len, hdr_offset);
1030
1031         if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
1032                 return -EINVAL;
1033
1034         switch (hdr_type) {
1035         case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1036                 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1037                 break;
1038         case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1039         default:
1040                 return -ENOTSUPP;
1041         }
1042
1043         return 0;
1044 }
1045
1046 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1047                                      unsigned long buf_size,
1048                                      struct iwm_wifi_cmd *cmd)
1049 {
1050         struct iwm_umac_cmd_get_channel_list *ch_list =
1051                         (struct iwm_umac_cmd_get_channel_list *)
1052                         (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1053         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1054         struct ieee80211_supported_band *band;
1055         int i;
1056
1057         band = wiphy->bands[IEEE80211_BAND_2GHZ];
1058
1059         for (i = 0; i < band->n_channels; i++) {
1060                 unsigned long ch_mask_0 =
1061                         le32_to_cpu(ch_list->ch[0].channels_mask);
1062                 unsigned long ch_mask_2 =
1063                         le32_to_cpu(ch_list->ch[2].channels_mask);
1064
1065                 if (!test_bit(i, &ch_mask_0))
1066                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1067
1068                 if (!test_bit(i, &ch_mask_2))
1069                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1070         }
1071
1072         band = wiphy->bands[IEEE80211_BAND_5GHZ];
1073
1074         for (i = 0; i < min(band->n_channels, 32); i++) {
1075                 unsigned long ch_mask_1 =
1076                         le32_to_cpu(ch_list->ch[1].channels_mask);
1077                 unsigned long ch_mask_3 =
1078                         le32_to_cpu(ch_list->ch[3].channels_mask);
1079
1080                 if (!test_bit(i, &ch_mask_1))
1081                         band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1082
1083                 if (!test_bit(i, &ch_mask_3))
1084                         band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1085         }
1086
1087         return 0;
1088 }
1089
1090 static int iwm_ntf_stop_resume_tx(struct iwm_priv *iwm, u8 *buf,
1091                                   unsigned long buf_size,
1092                                   struct iwm_wifi_cmd *cmd)
1093 {
1094         struct iwm_umac_notif_stop_resume_tx *stp_res_tx =
1095                 (struct iwm_umac_notif_stop_resume_tx *)buf;
1096         struct iwm_sta_info *sta_info;
1097         struct iwm_tid_info *tid_info;
1098         u8 sta_id = STA_ID_N_COLOR_ID(stp_res_tx->sta_id);
1099         u16 tid_msk = le16_to_cpu(stp_res_tx->stop_resume_tid_msk);
1100         int bit, ret = 0;
1101         bool stop = false;
1102
1103         IWM_DBG_NTF(iwm, DBG, "stop/resume notification:\n"
1104                     "\tflags:       0x%x\n"
1105                     "\tSTA id:      %d\n"
1106                     "\tTID bitmask: 0x%x\n",
1107                     stp_res_tx->flags, stp_res_tx->sta_id,
1108                     stp_res_tx->stop_resume_tid_msk);
1109
1110         if (stp_res_tx->flags & UMAC_STOP_TX_FLAG)
1111                 stop = true;
1112
1113         sta_info = &iwm->sta_table[sta_id];
1114         if (!sta_info->valid) {
1115                 IWM_ERR(iwm, "Stoping an invalid STA: %d %d\n",
1116                         sta_id, stp_res_tx->sta_id);
1117                 return -EINVAL;
1118         }
1119
1120         for_each_bit(bit, (unsigned long *)&tid_msk, IWM_UMAC_TID_NR) {
1121                 tid_info = &sta_info->tid_info[bit];
1122
1123                 mutex_lock(&tid_info->mutex);
1124                 tid_info->stopped = stop;
1125                 mutex_unlock(&tid_info->mutex);
1126
1127                 if (!stop) {
1128                         struct iwm_tx_queue *txq;
1129                         int queue = iwm_tid_to_queue(bit);
1130
1131                         if (queue < 0)
1132                                 continue;
1133
1134                         txq = &iwm->txq[queue];
1135                         /*
1136                          * If we resume, we have to move our SKBs
1137                          * back to the tx queue and queue some work.
1138                          */
1139                         spin_lock_bh(&txq->lock);
1140                         skb_queue_splice_init(&txq->queue, &txq->stopped_queue);
1141                         spin_unlock_bh(&txq->lock);
1142
1143                         queue_work(txq->wq, &txq->worker);
1144                 }
1145
1146         }
1147
1148         /* We send an ACK only for the stop case */
1149         if (stop)
1150                 ret = iwm_send_umac_stop_resume_tx(iwm, stp_res_tx);
1151
1152         return ret;
1153 }
1154
1155 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1156                                    unsigned long buf_size,
1157                                    struct iwm_wifi_cmd *cmd)
1158 {
1159         struct iwm_umac_wifi_if *hdr;
1160
1161         if (cmd == NULL) {
1162                 IWM_ERR(iwm, "Couldn't find expected wifi command\n");
1163                 return -EINVAL;
1164         }
1165
1166         hdr = (struct iwm_umac_wifi_if *)cmd->buf.payload;
1167
1168         IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1169                     "oid is 0x%x\n", hdr->oid);
1170
1171         if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1172                 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1173                 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1174         } else
1175                 return -EINVAL;
1176
1177         switch (hdr->oid) {
1178         case UMAC_WIFI_IF_CMD_SET_PROFILE:
1179                 iwm->umac_profile_active = 1;
1180                 break;
1181         default:
1182                 break;
1183         }
1184
1185         return 0;
1186 }
1187
1188 #define CT_KILL_DELAY (30 * HZ)
1189 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1190                               unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1191 {
1192         struct wiphy *wiphy = iwm_to_wiphy(iwm);
1193         struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1194                                 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1195         u32 flags = le32_to_cpu(state->flags);
1196
1197         IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1198                  flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1199                  flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1200
1201         if (flags & IWM_CARD_STATE_CTKILL_DISABLED) {
1202                 /*
1203                  * We got a CTKILL event: We bring the interface down in
1204                  * oder to cool the device down, and try to bring it up
1205                  * 30 seconds later. If it's still too hot, we'll go through
1206                  * this code path again.
1207                  */
1208                 cancel_delayed_work_sync(&iwm->ct_kill_delay);
1209                 schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY);
1210         }
1211
1212         wiphy_rfkill_set_hw_state(wiphy, flags &
1213                                   (IWM_CARD_STATE_HW_DISABLED |
1214                                    IWM_CARD_STATE_CTKILL_DISABLED));
1215
1216         return 0;
1217 }
1218
1219 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1220                               unsigned long buf_size)
1221 {
1222         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1223         struct iwm_wifi_cmd *cmd;
1224         u8 source, cmd_id;
1225         u16 seq_num;
1226         u32 count;
1227         u8 resp;
1228
1229         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1230         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1231
1232         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1233         if (source >= IWM_SRC_NUM) {
1234                 IWM_CRIT(iwm, "invalid source %d\n", source);
1235                 return -EINVAL;
1236         }
1237
1238         count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1239         count += sizeof(struct iwm_umac_wifi_in_hdr) -
1240                  sizeof(struct iwm_dev_cmd_hdr);
1241         if (count > buf_size) {
1242                 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1243                 return -EINVAL;
1244         }
1245
1246         resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1247
1248         seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1249
1250         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1251                    cmd_id, source, seq_num);
1252
1253         /*
1254          * If this is a response to a previously sent command, there must
1255          * be a pending command for this sequence number.
1256          */
1257         cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1258
1259         /* Notify the caller only for sync commands. */
1260         switch (source) {
1261         case UMAC_HDI_IN_SOURCE_FHRX:
1262                 if (iwm->lmac_handlers[cmd_id] &&
1263                     test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1264                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1265                                               buf, count);
1266                 break;
1267         case UMAC_HDI_IN_SOURCE_FW:
1268                 if (iwm->umac_handlers[cmd_id] &&
1269                     test_bit(cmd_id, &iwm->umac_handler_map[0]))
1270                         return iwm_notif_send(iwm, cmd, cmd_id, source,
1271                                               buf, count);
1272                 break;
1273         case UMAC_HDI_IN_SOURCE_UDMA:
1274                 break;
1275         }
1276
1277         return iwm_rx_handle_resp(iwm, buf, count, cmd);
1278 }
1279
1280 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1281                        struct iwm_wifi_cmd *cmd)
1282 {
1283         u8 source, cmd_id;
1284         struct iwm_umac_wifi_in_hdr *wifi_hdr;
1285         int ret = 0;
1286
1287         wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1288         cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1289
1290         source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1291
1292         IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1293
1294         switch (source) {
1295         case UMAC_HDI_IN_SOURCE_FHRX:
1296                 if (iwm->lmac_handlers[cmd_id])
1297                         ret = iwm->lmac_handlers[cmd_id]
1298                                         (iwm, buf, buf_size, cmd);
1299                 break;
1300         case UMAC_HDI_IN_SOURCE_FW:
1301                 if (iwm->umac_handlers[cmd_id])
1302                         ret = iwm->umac_handlers[cmd_id]
1303                                         (iwm, buf, buf_size, cmd);
1304                 break;
1305         case UMAC_HDI_IN_SOURCE_UDMA:
1306                 ret = -EINVAL;
1307                 break;
1308         }
1309
1310         kfree(cmd);
1311
1312         return ret;
1313 }
1314
1315 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1316                                  unsigned long buf_size)
1317 {
1318         u8 seq_num;
1319         struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1320         struct iwm_nonwifi_cmd *cmd, *next;
1321
1322         seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1323
1324         /*
1325          * We received a non wifi answer.
1326          * Let's check if there's a pending command for it, and if so
1327          * replace the command payload with the buffer, and then wake the
1328          * callers up.
1329          * That means we only support synchronised non wifi command response
1330          * schemes.
1331          */
1332         list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1333                 if (cmd->seq_num == seq_num) {
1334                         cmd->resp_received = 1;
1335                         cmd->buf.len = buf_size;
1336                         memcpy(cmd->buf.hdr, buf, buf_size);
1337                         wake_up_interruptible(&iwm->nonwifi_queue);
1338                 }
1339
1340         return 0;
1341 }
1342
1343 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1344                               unsigned long buf_size)
1345 {
1346         int ret = 0;
1347         u8 op_code;
1348         unsigned long buf_offset = 0;
1349         struct iwm_udma_in_hdr *hdr;
1350
1351         /*
1352          * To allow for a more efficient bus usage, UMAC
1353          * messages are encapsulated into UDMA ones. This
1354          * way we can have several UMAC messages in one bus
1355          * transfer.
1356          * A UDMA frame size is always aligned on 16 bytes,
1357          * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1358          * word. This is how we parse a bus frame into several
1359          * UDMA ones.
1360          */
1361         while (buf_offset < buf_size) {
1362
1363                 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1364
1365                 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1366                         IWM_DBG_RX(iwm, DBG, "End of frame\n");
1367                         break;
1368                 }
1369
1370                 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1371
1372                 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1373
1374                 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1375                         ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1376                                                   buf_size - buf_offset);
1377                 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1378                         if (GET_VAL32(hdr->cmd,
1379                                       UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1380                             UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1381                                 IWM_ERR(iwm, "Incorrect hw signature\n");
1382                                 return -EINVAL;
1383                         }
1384                         ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1385                                                      buf_size - buf_offset);
1386                 } else {
1387                         IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1388                         ret |= -EINVAL;
1389                 }
1390
1391                 buf_offset += iwm_rx_resp_size(hdr);
1392         }
1393
1394         return ret;
1395 }
1396
1397 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1398 {
1399         struct iwm_udma_in_hdr *hdr;
1400
1401         hdr = (struct iwm_udma_in_hdr *)buf;
1402
1403         switch (le32_to_cpu(hdr->cmd)) {
1404         case UMAC_REBOOT_BARKER:
1405                 if (test_bit(IWM_STATUS_READY, &iwm->status)) {
1406                         IWM_ERR(iwm, "Unexpected BARKER\n");
1407
1408                         schedule_work(&iwm->reset_worker);
1409
1410                         return 0;
1411                 }
1412
1413                 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1414                                       IWM_SRC_UDMA, buf, buf_size);
1415         case UMAC_ACK_BARKER:
1416                 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1417                                       IWM_SRC_UDMA, NULL, 0);
1418         default:
1419                 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1420                 return iwm_rx_handle_umac(iwm, buf, buf_size);
1421         }
1422
1423         return 0;
1424 }
1425
1426 static const iwm_handler iwm_umac_handlers[] =
1427 {
1428         [UMAC_NOTIFY_OPCODE_ERROR]              = iwm_ntf_error,
1429         [UMAC_NOTIFY_OPCODE_ALIVE]              = iwm_ntf_umac_alive,
1430         [UMAC_NOTIFY_OPCODE_INIT_COMPLETE]      = iwm_ntf_init_complete,
1431         [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS]   = iwm_ntf_wifi_status,
1432         [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER]    = iwm_ntf_mlme,
1433         [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC]       = iwm_ntf_tx_credit_update,
1434         [UMAC_NOTIFY_OPCODE_RX_TICKET]          = iwm_ntf_rx_ticket,
1435         [UMAC_CMD_OPCODE_RESET]                 = iwm_ntf_umac_reset,
1436         [UMAC_NOTIFY_OPCODE_STATS]              = iwm_ntf_statistics,
1437         [UMAC_CMD_OPCODE_EEPROM_PROXY]          = iwm_ntf_eeprom_proxy,
1438         [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST]    = iwm_ntf_channel_info_list,
1439         [UMAC_CMD_OPCODE_STOP_RESUME_STA_TX]    = iwm_ntf_stop_resume_tx,
1440         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1441         [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER]       = iwm_ntf_wifi_if_wrapper,
1442 };
1443
1444 static const iwm_handler iwm_lmac_handlers[] =
1445 {
1446         [REPLY_TX]                              = iwm_ntf_tx,
1447         [REPLY_ALIVE]                           = iwm_ntf_lmac_version,
1448         [CALIBRATION_RES_NOTIFICATION]          = iwm_ntf_calib_res,
1449         [CALIBRATION_COMPLETE_NOTIFICATION]     = iwm_ntf_calib_complete,
1450         [CALIBRATION_CFG_CMD]                   = iwm_ntf_calib_cfg,
1451         [REPLY_RX_MPDU_CMD]                     = iwm_ntf_rx_packet,
1452         [CARD_STATE_NOTIFICATION]               = iwm_ntf_card_state,
1453 };
1454
1455 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1456 {
1457         iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1458         iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1459 }
1460
1461 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1462 {
1463         struct ieee80211_hdr *hdr;
1464         unsigned int hdr_len;
1465
1466         hdr = (struct ieee80211_hdr *)skb->data;
1467
1468         if (!ieee80211_has_protected(hdr->frame_control))
1469                 return;
1470
1471         hdr_len = ieee80211_hdrlen(hdr->frame_control);
1472         if (hdr_total_len <= hdr_len)
1473                 return;
1474
1475         memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1476         skb_pull(skb, (hdr_total_len - hdr_len));
1477 }
1478
1479 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1480                                  struct iwm_rx_packet *packet,
1481                                  struct iwm_rx_ticket_node *ticket_node)
1482 {
1483         u32 payload_offset = 0, payload_len;
1484         struct iwm_rx_ticket *ticket = ticket_node->ticket;
1485         struct iwm_rx_mpdu_hdr *mpdu_hdr;
1486         struct ieee80211_hdr *hdr;
1487
1488         mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1489         payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1490         /* Padding is 0 or 2 bytes */
1491         payload_len = le16_to_cpu(mpdu_hdr->len) +
1492                 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1493         payload_len -= ticket->tail_len;
1494
1495         IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1496                    "ticket offset:%d ticket tail len:%d\n",
1497                    payload_len, payload_offset, ticket->payload_offset,
1498                    ticket->tail_len);
1499
1500         IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1501
1502         skb_pull(packet->skb, payload_offset);
1503         skb_trim(packet->skb, payload_len);
1504
1505         iwm_remove_iv(packet->skb, ticket->payload_offset);
1506
1507         hdr = (struct ieee80211_hdr *) packet->skb->data;
1508         if (ieee80211_is_data_qos(hdr->frame_control)) {
1509                 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1510                  * to the qos_ctl field in IEEE 802.11 headers. */
1511                 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1512                         packet->skb->data,
1513                         ieee80211_hdrlen(hdr->frame_control) -
1514                         IEEE80211_QOS_CTL_LEN);
1515                 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1516                                 IEEE80211_QOS_CTL_LEN + 2);
1517                 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1518         }
1519
1520         IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1521                     packet->skb->data, packet->skb->len);
1522 }
1523
1524 static void classify8023(struct sk_buff *skb)
1525 {
1526         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1527
1528         if (ieee80211_is_data_qos(hdr->frame_control)) {
1529                 u8 *qc = ieee80211_get_qos_ctl(hdr);
1530                 /* frame has qos control */
1531                 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1532         } else {
1533                 skb->priority = 0;
1534         }
1535 }
1536
1537 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1538                                   struct iwm_rx_packet *packet,
1539                                   struct iwm_rx_ticket_node *ticket_node)
1540 {
1541         int ret;
1542         struct sk_buff *skb = packet->skb;
1543         struct wireless_dev *wdev = iwm_to_wdev(iwm);
1544         struct net_device *ndev = iwm_to_ndev(iwm);
1545
1546         IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1547
1548         switch (le16_to_cpu(ticket_node->ticket->action)) {
1549         case IWM_RX_TICKET_RELEASE:
1550                 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1551                 classify8023(skb);
1552                 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1553                 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1554                 if (ret < 0) {
1555                         IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1556                                    "%d\n", ret);
1557                         break;
1558                 }
1559
1560                 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1561
1562                 skb->dev = iwm_to_ndev(iwm);
1563                 skb->protocol = eth_type_trans(skb, ndev);
1564                 skb->ip_summed = CHECKSUM_NONE;
1565                 memset(skb->cb, 0, sizeof(skb->cb));
1566
1567                 ndev->stats.rx_packets++;
1568                 ndev->stats.rx_bytes += skb->len;
1569
1570                 if (netif_rx_ni(skb) == NET_RX_DROP) {
1571                         IWM_ERR(iwm, "Packet dropped\n");
1572                         ndev->stats.rx_dropped++;
1573                 }
1574                 break;
1575         case IWM_RX_TICKET_DROP:
1576                 IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n",
1577                            le16_to_cpu(ticket_node->ticket->flags));
1578                 kfree_skb(packet->skb);
1579                 break;
1580         default:
1581                 IWM_ERR(iwm, "Unknown ticket action: %d\n",
1582                         le16_to_cpu(ticket_node->ticket->action));
1583                 kfree_skb(packet->skb);
1584         }
1585
1586         kfree(packet);
1587         iwm_rx_ticket_node_free(ticket_node);
1588 }
1589
1590 /*
1591  * Rx data processing:
1592  *
1593  * We're receiving Rx packet from the LMAC, and Rx ticket from
1594  * the UMAC.
1595  * To forward a target data packet upstream (i.e. to the
1596  * kernel network stack), we must have received an Rx ticket
1597  * that tells us we're allowed to release this packet (ticket
1598  * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1599  * among other things, where valid data actually starts in the Rx
1600  * packet.
1601  */
1602 void iwm_rx_worker(struct work_struct *work)
1603 {
1604         struct iwm_priv *iwm;
1605         struct iwm_rx_ticket_node *ticket, *next;
1606
1607         iwm = container_of(work, struct iwm_priv, rx_worker);
1608
1609         /*
1610          * We go through the tickets list and if there is a pending
1611          * packet for it, we push it upstream.
1612          * We stop whenever a ticket is missing its packet, as we're
1613          * supposed to send the packets in order.
1614          */
1615         list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1616                 struct iwm_rx_packet *packet =
1617                         iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1618
1619                 if (!packet) {
1620                         IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1621                                    "to be handled first\n",
1622                                    le16_to_cpu(ticket->ticket->id));
1623                         return;
1624                 }
1625
1626                 list_del(&ticket->node);
1627                 list_del(&packet->node);
1628                 iwm_rx_process_packet(iwm, packet, ticket);
1629         }
1630 }
1631