2 * Intel Wireless Multicomm 3200 WiFi driver
4 * Copyright (C) 2009 Intel Corporation. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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
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.
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.
33 * Intel Corporation <ilw@linux.intel.com>
34 * Samuel Ortiz <samuel.ortiz@intel.com>
35 * Zhu Yi <yi.zhu@intel.com>
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>
58 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
60 if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
61 (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
67 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
69 return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
74 * Notification handlers:
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
83 * -> iwm_rx_handle_umac()
84 * -> iwm_rx_handle_wifi()
85 * -> iwm_rx_handle_resp()
90 * -> iwm_rx_handle_non_wifi()
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.
96 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
97 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
99 struct iwm_umac_notif_error *error;
100 struct iwm_fw_error_hdr *fw_err;
102 error = (struct iwm_umac_notif_error *)buf;
103 fw_err = &error->err;
105 IWM_ERR(iwm, "%cMAC FW ERROR:\n",
106 (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
107 IWM_ERR(iwm, "\tCategory: %d\n", le32_to_cpu(fw_err->category));
108 IWM_ERR(iwm, "\tStatus: 0x%x\n", le32_to_cpu(fw_err->status));
109 IWM_ERR(iwm, "\tPC: 0x%x\n", le32_to_cpu(fw_err->pc));
110 IWM_ERR(iwm, "\tblink1: %d\n", le32_to_cpu(fw_err->blink1));
111 IWM_ERR(iwm, "\tblink2: %d\n", le32_to_cpu(fw_err->blink2));
112 IWM_ERR(iwm, "\tilink1: %d\n", le32_to_cpu(fw_err->ilink1));
113 IWM_ERR(iwm, "\tilink2: %d\n", le32_to_cpu(fw_err->ilink2));
114 IWM_ERR(iwm, "\tData1: 0x%x\n", le32_to_cpu(fw_err->data1));
115 IWM_ERR(iwm, "\tData2: 0x%x\n", le32_to_cpu(fw_err->data2));
116 IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
117 IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
118 IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
119 IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
124 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
125 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
127 struct iwm_umac_notif_alive *alive_resp =
128 (struct iwm_umac_notif_alive *)(buf);
129 u16 status = le16_to_cpu(alive_resp->status);
131 if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
132 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
136 iwm_tx_credit_init_pools(iwm, alive_resp);
141 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
142 unsigned long buf_size,
143 struct iwm_wifi_cmd *cmd)
145 struct wiphy *wiphy = iwm_to_wiphy(iwm);
146 struct iwm_umac_notif_init_complete *init_complete =
147 (struct iwm_umac_notif_init_complete *)(buf);
148 u16 status = le16_to_cpu(init_complete->status);
149 bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
152 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
154 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
156 wiphy_rfkill_set_hw_state(wiphy, blocked);
161 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
162 unsigned long buf_size,
163 struct iwm_wifi_cmd *cmd)
165 int pool_nr, total_freed_pages;
166 unsigned long pool_map;
168 struct iwm_umac_notif_page_dealloc *dealloc =
169 (struct iwm_umac_notif_page_dealloc *)buf;
171 pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
172 pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
174 IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
175 "update map 0x%lx\n", pool_nr, pool_map);
177 spin_lock(&iwm->tx_credit.lock);
179 for (i = 0; i < pool_nr; i++) {
180 id = GET_VAL32(dealloc->grp_info[i],
181 UMAC_DEALLOC_NTFY_GROUP_NUM);
182 if (test_bit(id, &pool_map)) {
183 total_freed_pages = GET_VAL32(dealloc->grp_info[i],
184 UMAC_DEALLOC_NTFY_PAGE_CNT);
185 iwm_tx_credit_inc(iwm, id, total_freed_pages);
189 spin_unlock(&iwm->tx_credit.lock);
194 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
195 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
197 IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
202 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
203 unsigned long buf_size,
204 struct iwm_wifi_cmd *cmd)
206 IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
211 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
212 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
214 struct iwm_lmac_tx_resp *tx_resp;
215 struct iwm_umac_wifi_in_hdr *hdr;
217 tx_resp = (struct iwm_lmac_tx_resp *)
218 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
219 hdr = (struct iwm_umac_wifi_in_hdr *)buf;
221 IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
223 IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
224 le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
225 IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
226 IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
227 le16_to_cpu(tx_resp->retry_cnt));
228 IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
229 IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
230 le16_to_cpu(tx_resp->byte_cnt));
231 IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
237 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
238 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
242 struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
243 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
245 opcode = hdr->opcode;
247 BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
248 opcode < PHY_CALIBRATE_OPCODES_NUM);
250 IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
253 buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
254 calib_buf = iwm->calib_res[opcode].buf;
256 if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
258 calib_buf = kzalloc(buf_size, GFP_KERNEL);
260 IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
263 iwm->calib_res[opcode].buf = calib_buf;
264 iwm->calib_res[opcode].size = buf_size;
267 memcpy(calib_buf, hdr, buf_size);
268 set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
273 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
274 unsigned long buf_size,
275 struct iwm_wifi_cmd *cmd)
277 IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
282 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
283 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
285 struct iwm_lmac_cal_cfg_resp *cal_resp;
287 cal_resp = (struct iwm_lmac_cal_cfg_resp *)
288 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
290 IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
291 le32_to_cpu(cal_resp->status));
296 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
297 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
299 struct iwm_umac_notif_wifi_status *status =
300 (struct iwm_umac_notif_wifi_status *)buf;
302 iwm->core_enabled |= le16_to_cpu(status->status);
307 static struct iwm_rx_ticket_node *
308 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
310 struct iwm_rx_ticket_node *ticket_node;
312 ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
314 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
315 return ERR_PTR(-ENOMEM);
318 ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
319 if (!ticket_node->ticket) {
320 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
322 return ERR_PTR(-ENOMEM);
325 memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
326 INIT_LIST_HEAD(&ticket_node->node);
331 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
333 kfree(ticket_node->ticket);
337 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
339 u8 id_hash = IWM_RX_ID_GET_HASH(id);
340 struct list_head *packet_list;
341 struct iwm_rx_packet *packet, *next;
343 packet_list = &iwm->rx_packets[id_hash];
345 list_for_each_entry_safe(packet, next, packet_list, node)
346 if (packet->id == id)
352 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
355 struct iwm_rx_packet *packet;
357 packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
359 IWM_ERR(iwm, "Couldn't allocate packet\n");
360 return ERR_PTR(-ENOMEM);
363 packet->skb = dev_alloc_skb(size);
365 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
367 return ERR_PTR(-ENOMEM);
370 packet->pkt_size = size;
372 skb_put(packet->skb, size);
373 memcpy(packet->skb->data, buf, size);
374 INIT_LIST_HEAD(&packet->node);
380 void iwm_rx_free(struct iwm_priv *iwm)
382 struct iwm_rx_ticket_node *ticket, *nt;
383 struct iwm_rx_packet *packet, *np;
386 list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
387 list_del(&ticket->node);
388 iwm_rx_ticket_node_free(ticket);
391 for (i = 0; i < IWM_RX_ID_HASH; i++) {
392 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
394 list_del(&packet->node);
395 kfree_skb(packet->skb);
401 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
402 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
404 struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
405 (struct iwm_umac_notif_rx_ticket *)buf;
406 struct iwm_rx_ticket *ticket =
407 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
408 int i, schedule_rx = 0;
410 for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
411 struct iwm_rx_ticket_node *ticket_node;
413 switch (le16_to_cpu(ticket->action)) {
414 case IWM_RX_TICKET_RELEASE:
415 case IWM_RX_TICKET_DROP:
416 /* We can push the packet to the stack */
417 ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
418 if (IS_ERR(ticket_node))
419 return PTR_ERR(ticket_node);
421 IWM_DBG_RX(iwm, DBG, "TICKET RELEASE(%d)\n",
423 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
426 * We received an Rx ticket, most likely there's
427 * a packet pending for it, it's not worth going
428 * through the packet hash list to double check.
429 * Let's just fire the rx worker..
436 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
444 queue_work(iwm->rx_wq, &iwm->rx_worker);
449 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
450 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
452 struct iwm_umac_wifi_in_hdr *wifi_hdr;
453 struct iwm_rx_packet *packet;
457 IWM_DBG_RX(iwm, DBG, "\n");
459 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
460 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
461 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
462 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
464 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
465 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
466 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
467 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
469 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
471 return PTR_ERR(packet);
473 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
475 /* We might (unlikely) have received the packet _after_ the ticket */
476 queue_work(iwm->rx_wq, &iwm->rx_worker);
482 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
483 unsigned long buf_size,
484 struct iwm_wifi_cmd *cmd)
486 struct iwm_umac_notif_assoc_start *start;
488 start = (struct iwm_umac_notif_assoc_start *)buf;
490 set_bit(IWM_STATUS_ASSOCIATING, &iwm->status);
492 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
493 start->bssid, le32_to_cpu(start->roam_reason));
495 wake_up_interruptible(&iwm->mlme_queue);
500 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
501 unsigned long buf_size,
502 struct iwm_wifi_cmd *cmd)
504 struct iwm_umac_notif_assoc_complete *complete =
505 (struct iwm_umac_notif_assoc_complete *)buf;
507 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
508 complete->bssid, complete->status);
510 clear_bit(IWM_STATUS_ASSOCIATING, &iwm->status);
512 switch (le32_to_cpu(complete->status)) {
513 case UMAC_ASSOC_COMPLETE_SUCCESS:
514 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
515 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
516 iwm->channel = complete->channel;
520 if (iwm->conf.mode == UMAC_MODE_IBSS)
523 cfg80211_connect_result(iwm_to_ndev(iwm),
525 iwm->req_ie, iwm->req_ie_len,
526 iwm->resp_ie, iwm->resp_ie_len,
527 WLAN_STATUS_SUCCESS, GFP_KERNEL);
529 case UMAC_ASSOC_COMPLETE_FAILURE:
530 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
531 memset(iwm->bssid, 0, ETH_ALEN);
536 if (iwm->conf.mode == UMAC_MODE_IBSS)
539 cfg80211_connect_result(iwm_to_ndev(iwm), complete->bssid,
541 WLAN_STATUS_UNSPECIFIED_FAILURE,
550 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
554 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
555 unsigned long buf_size,
556 struct iwm_wifi_cmd *cmd)
558 struct iwm_umac_notif_profile_invalidate *invalid;
560 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
562 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n",
563 le32_to_cpu(invalid->reason));
565 clear_bit(IWM_STATUS_ASSOCIATING, &iwm->status);
566 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
568 iwm->umac_profile_active = 0;
569 memset(iwm->bssid, 0, ETH_ALEN);
574 wake_up_interruptible(&iwm->mlme_queue);
579 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
580 unsigned long buf_size,
581 struct iwm_wifi_cmd *cmd)
584 struct iwm_umac_notif_scan_complete *scan_complete =
585 (struct iwm_umac_notif_scan_complete *)buf;
586 u32 result = le32_to_cpu(scan_complete->result);
588 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
589 le32_to_cpu(scan_complete->type),
590 le32_to_cpu(scan_complete->result),
591 scan_complete->seq_num);
593 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
594 IWM_ERR(iwm, "Scan complete while device not scanning\n");
597 if (!iwm->scan_request)
600 ret = iwm_cfg80211_inform_bss(iwm);
602 cfg80211_scan_done(iwm->scan_request,
603 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
604 iwm->scan_request = NULL;
609 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
610 unsigned long buf_size,
611 struct iwm_wifi_cmd *cmd)
613 struct iwm_umac_notif_sta_info *umac_sta =
614 (struct iwm_umac_notif_sta_info *)buf;
615 struct iwm_sta_info *sta;
618 switch (le32_to_cpu(umac_sta->opcode)) {
619 case UMAC_OPCODE_ADD_MODIFY:
620 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
622 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
623 "addr = %pM, qos = %d\n",
624 sta->valid ? "Modify" : "Add",
625 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
626 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
628 umac_sta->flags & UMAC_STA_FLAG_QOS);
631 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
632 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
633 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
635 case UMAC_OPCODE_REMOVE:
636 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
638 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
639 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
642 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
644 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
648 case UMAC_OPCODE_CLEAR_ALL:
649 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
650 iwm->sta_table[i].valid = 0;
660 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
661 unsigned long buf_size,
662 struct iwm_wifi_cmd *cmd)
664 struct wiphy *wiphy = iwm_to_wiphy(iwm);
665 struct ieee80211_mgmt *mgmt;
666 struct iwm_umac_notif_bss_info *umac_bss =
667 (struct iwm_umac_notif_bss_info *)buf;
668 struct ieee80211_channel *channel;
669 struct ieee80211_supported_band *band;
670 struct iwm_bss_info *bss, *next;
673 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
674 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
676 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
678 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
679 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
680 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
681 le32_to_cpu(umac_bss->timestamp));
682 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
683 le16_to_cpu(umac_bss->table_idx));
684 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
685 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
686 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
687 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
689 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
690 if (bss->bss->table_idx == umac_bss->table_idx)
693 if (&bss->node != &iwm->bss_list) {
694 /* Remove the old BSS entry, we will add it back later. */
695 list_del(&bss->node);
700 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
702 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
707 bss->bss = kzalloc(bss_len, GFP_KERNEL);
710 IWM_ERR(iwm, "Couldn't allocate bss\n");
714 INIT_LIST_HEAD(&bss->node);
715 memcpy(bss->bss, umac_bss, bss_len);
717 if (umac_bss->band == UMAC_BAND_2GHZ)
718 band = wiphy->bands[IEEE80211_BAND_2GHZ];
719 else if (umac_bss->band == UMAC_BAND_5GHZ)
720 band = wiphy->bands[IEEE80211_BAND_5GHZ];
722 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
726 freq = ieee80211_channel_to_frequency(umac_bss->channel);
727 channel = ieee80211_get_channel(wiphy, freq);
728 signal = umac_bss->rssi * 100;
730 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
736 list_add_tail(&bss->node, &iwm->bss_list);
746 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
747 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
749 struct iwm_umac_notif_bss_removed *bss_rm =
750 (struct iwm_umac_notif_bss_removed *)buf;
751 struct iwm_bss_info *bss, *next;
755 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
756 table_idx = (le16_to_cpu(bss_rm->entries[i])
757 & IWM_BSS_REMOVE_INDEX_MSK);
758 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
759 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
760 struct ieee80211_mgmt *mgmt;
762 mgmt = (struct ieee80211_mgmt *)
763 (bss->bss->frame_buf);
764 IWM_DBG_MLME(iwm, ERR,
765 "BSS removed: %pM\n",
767 list_del(&bss->node);
776 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
777 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
779 struct iwm_umac_notif_mgt_frame *mgt_frame =
780 (struct iwm_umac_notif_mgt_frame *)buf;
781 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
784 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
785 le16_to_cpu(mgt_frame->len));
787 if (ieee80211_is_assoc_req(mgt->frame_control)) {
788 ie = mgt->u.assoc_req.variable;;
790 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
792 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
793 iwm->req_ie_len, GFP_KERNEL);
794 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
795 ie = mgt->u.reassoc_req.variable;;
797 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
799 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
800 iwm->req_ie_len, GFP_KERNEL);
801 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
802 ie = mgt->u.assoc_resp.variable;;
804 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
806 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
807 iwm->resp_ie_len, GFP_KERNEL);
808 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
809 ie = mgt->u.reassoc_resp.variable;;
811 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
813 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
814 iwm->resp_ie_len, GFP_KERNEL);
816 IWM_ERR(iwm, "Unsupported management frame");
823 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
824 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
826 struct iwm_umac_notif_wifi_if *notif =
827 (struct iwm_umac_notif_wifi_if *)buf;
829 switch (notif->status) {
830 case WIFI_IF_NTFY_ASSOC_START:
831 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
832 case WIFI_IF_NTFY_ASSOC_COMPLETE:
833 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
834 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
835 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
836 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
837 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
839 case WIFI_IF_NTFY_SCAN_COMPLETE:
840 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
841 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
842 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
843 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
844 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
846 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
847 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
848 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
849 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
851 case WIFI_IF_NTFY_MGMT_FRAME:
852 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
853 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
854 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
855 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
856 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
857 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
858 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
859 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
860 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
861 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
862 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
863 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
867 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
874 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
876 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
877 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
879 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
880 struct iw_statistics *wstats = &iwm->wstats;
884 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
886 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
887 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
888 max_rate = max_t(u16, max_rate,
889 max(le16_to_cpu(stats->tx_rate[i]),
890 le16_to_cpu(stats->rx_rate[i])));
892 /* UMAC passes rate info multiplies by 2 */
893 iwm->rate = max_rate >> 1;
895 iwm->txpower = le32_to_cpu(stats->tx_power);
899 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
900 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
901 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
902 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
904 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
906 /* according to cfg80211 */
907 if (stats->rssi_dbm < -110)
908 wstats->qual.qual = 0;
909 else if (stats->rssi_dbm > -40)
910 wstats->qual.qual = 70;
912 wstats->qual.qual = stats->rssi_dbm + 110;
914 wstats->qual.level = stats->rssi_dbm;
915 wstats->qual.noise = stats->noise_dbm;
916 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
918 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
920 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
925 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
926 unsigned long buf_size,
927 struct iwm_wifi_cmd *cmd)
929 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
930 (struct iwm_umac_cmd_eeprom_proxy *)
931 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
932 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
933 u32 hdr_offset = le32_to_cpu(hdr->offset);
934 u32 hdr_len = le32_to_cpu(hdr->len);
935 u32 hdr_type = le32_to_cpu(hdr->type);
937 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
938 hdr_type, hdr_len, hdr_offset);
940 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
944 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
945 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
947 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
955 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
956 unsigned long buf_size,
957 struct iwm_wifi_cmd *cmd)
959 struct iwm_umac_cmd_get_channel_list *ch_list =
960 (struct iwm_umac_cmd_get_channel_list *)
961 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
962 struct wiphy *wiphy = iwm_to_wiphy(iwm);
963 struct ieee80211_supported_band *band;
966 band = wiphy->bands[IEEE80211_BAND_2GHZ];
968 for (i = 0; i < band->n_channels; i++) {
969 unsigned long ch_mask_0 =
970 le32_to_cpu(ch_list->ch[0].channels_mask);
971 unsigned long ch_mask_2 =
972 le32_to_cpu(ch_list->ch[2].channels_mask);
974 if (!test_bit(i, &ch_mask_0))
975 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
977 if (!test_bit(i, &ch_mask_2))
978 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
981 band = wiphy->bands[IEEE80211_BAND_5GHZ];
983 for (i = 0; i < min(band->n_channels, 32); i++) {
984 unsigned long ch_mask_1 =
985 le32_to_cpu(ch_list->ch[1].channels_mask);
986 unsigned long ch_mask_3 =
987 le32_to_cpu(ch_list->ch[3].channels_mask);
989 if (!test_bit(i, &ch_mask_1))
990 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
992 if (!test_bit(i, &ch_mask_3))
993 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
999 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1000 unsigned long buf_size,
1001 struct iwm_wifi_cmd *cmd)
1003 struct iwm_umac_wifi_if *hdr =
1004 (struct iwm_umac_wifi_if *)cmd->buf.payload;
1006 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1007 "oid is 0x%x\n", hdr->oid);
1009 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1010 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1011 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1016 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1017 iwm->umac_profile_active = 1;
1026 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1027 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1029 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1030 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1031 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1032 u32 flags = le32_to_cpu(state->flags);
1034 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1035 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1036 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1038 wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
1043 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1044 unsigned long buf_size)
1046 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1047 struct iwm_wifi_cmd *cmd;
1053 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1054 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1056 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1057 if (source >= IWM_SRC_NUM) {
1058 IWM_CRIT(iwm, "invalid source %d\n", source);
1062 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1063 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1064 sizeof(struct iwm_dev_cmd_hdr);
1065 if (count > buf_size) {
1066 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1070 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1072 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1074 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1075 cmd_id, source, seq_num);
1078 * If this is a response to a previously sent command, there must
1079 * be a pending command for this sequence number.
1081 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1083 /* Notify the caller only for sync commands. */
1085 case UMAC_HDI_IN_SOURCE_FHRX:
1086 if (iwm->lmac_handlers[cmd_id] &&
1087 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1088 return iwm_notif_send(iwm, cmd, cmd_id, source,
1091 case UMAC_HDI_IN_SOURCE_FW:
1092 if (iwm->umac_handlers[cmd_id] &&
1093 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1094 return iwm_notif_send(iwm, cmd, cmd_id, source,
1097 case UMAC_HDI_IN_SOURCE_UDMA:
1101 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1104 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1105 struct iwm_wifi_cmd *cmd)
1108 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1111 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1112 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1114 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1116 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1119 case UMAC_HDI_IN_SOURCE_FHRX:
1120 if (iwm->lmac_handlers[cmd_id])
1121 ret = iwm->lmac_handlers[cmd_id]
1122 (iwm, buf, buf_size, cmd);
1124 case UMAC_HDI_IN_SOURCE_FW:
1125 if (iwm->umac_handlers[cmd_id])
1126 ret = iwm->umac_handlers[cmd_id]
1127 (iwm, buf, buf_size, cmd);
1129 case UMAC_HDI_IN_SOURCE_UDMA:
1139 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1140 unsigned long buf_size)
1143 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1144 struct iwm_nonwifi_cmd *cmd, *next;
1146 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1149 * We received a non wifi answer.
1150 * Let's check if there's a pending command for it, and if so
1151 * replace the command payload with the buffer, and then wake the
1153 * That means we only support synchronised non wifi command response
1156 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1157 if (cmd->seq_num == seq_num) {
1158 cmd->resp_received = 1;
1159 cmd->buf.len = buf_size;
1160 memcpy(cmd->buf.hdr, buf, buf_size);
1161 wake_up_interruptible(&iwm->nonwifi_queue);
1167 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1168 unsigned long buf_size)
1172 unsigned long buf_offset = 0;
1173 struct iwm_udma_in_hdr *hdr;
1176 * To allow for a more efficient bus usage, UMAC
1177 * messages are encapsulated into UDMA ones. This
1178 * way we can have several UMAC messages in one bus
1180 * A UDMA frame size is always aligned on 16 bytes,
1181 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1182 * word. This is how we parse a bus frame into several
1185 while (buf_offset < buf_size) {
1187 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1189 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1190 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1194 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1196 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1198 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1199 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1200 buf_size - buf_offset);
1201 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1202 if (GET_VAL32(hdr->cmd,
1203 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1204 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1205 IWM_ERR(iwm, "Incorrect hw signature\n");
1208 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1209 buf_size - buf_offset);
1211 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1215 buf_offset += iwm_rx_resp_size(hdr);
1221 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1223 struct iwm_udma_in_hdr *hdr;
1225 hdr = (struct iwm_udma_in_hdr *)buf;
1227 switch (le32_to_cpu(hdr->cmd)) {
1228 case UMAC_REBOOT_BARKER:
1229 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1230 IWM_SRC_UDMA, buf, buf_size);
1231 case UMAC_ACK_BARKER:
1232 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1233 IWM_SRC_UDMA, NULL, 0);
1235 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1236 return iwm_rx_handle_umac(iwm, buf, buf_size);
1242 static const iwm_handler iwm_umac_handlers[] =
1244 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1245 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1246 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1247 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1248 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1249 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1250 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1251 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1252 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1253 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1254 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1255 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1256 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1259 static const iwm_handler iwm_lmac_handlers[] =
1261 [REPLY_TX] = iwm_ntf_tx,
1262 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1263 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1264 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1265 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1266 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1267 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1270 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1272 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1273 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1276 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1278 struct ieee80211_hdr *hdr;
1279 unsigned int hdr_len;
1281 hdr = (struct ieee80211_hdr *)skb->data;
1283 if (!ieee80211_has_protected(hdr->frame_control))
1286 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1287 if (hdr_total_len <= hdr_len)
1290 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1291 skb_pull(skb, (hdr_total_len - hdr_len));
1294 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1295 struct iwm_rx_packet *packet,
1296 struct iwm_rx_ticket_node *ticket_node)
1298 u32 payload_offset = 0, payload_len;
1299 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1300 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1301 struct ieee80211_hdr *hdr;
1303 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1304 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1305 /* Padding is 0 or 2 bytes */
1306 payload_len = le16_to_cpu(mpdu_hdr->len) +
1307 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1308 payload_len -= ticket->tail_len;
1310 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1311 "ticket offset:%d ticket tail len:%d\n",
1312 payload_len, payload_offset, ticket->payload_offset,
1315 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1317 skb_pull(packet->skb, payload_offset);
1318 skb_trim(packet->skb, payload_len);
1320 iwm_remove_iv(packet->skb, ticket->payload_offset);
1322 hdr = (struct ieee80211_hdr *) packet->skb->data;
1323 if (ieee80211_is_data_qos(hdr->frame_control)) {
1324 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1325 * to the qos_ctl field in IEEE 802.11 headers. */
1326 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1328 ieee80211_hdrlen(hdr->frame_control) -
1329 IEEE80211_QOS_CTL_LEN);
1330 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1331 IEEE80211_QOS_CTL_LEN + 2);
1332 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1335 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1336 packet->skb->data, packet->skb->len);
1339 static void classify8023(struct sk_buff *skb)
1341 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1343 if (ieee80211_is_data_qos(hdr->frame_control)) {
1344 u8 *qc = ieee80211_get_qos_ctl(hdr);
1345 /* frame has qos control */
1346 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1352 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1353 struct iwm_rx_packet *packet,
1354 struct iwm_rx_ticket_node *ticket_node)
1357 struct sk_buff *skb = packet->skb;
1358 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1359 struct net_device *ndev = iwm_to_ndev(iwm);
1361 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1363 switch (le16_to_cpu(ticket_node->ticket->action)) {
1364 case IWM_RX_TICKET_RELEASE:
1365 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1367 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1368 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1370 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1375 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1377 skb->dev = iwm_to_ndev(iwm);
1378 skb->protocol = eth_type_trans(skb, ndev);
1379 skb->ip_summed = CHECKSUM_NONE;
1380 memset(skb->cb, 0, sizeof(skb->cb));
1382 ndev->stats.rx_packets++;
1383 ndev->stats.rx_bytes += skb->len;
1385 if (netif_rx_ni(skb) == NET_RX_DROP) {
1386 IWM_ERR(iwm, "Packet dropped\n");
1387 ndev->stats.rx_dropped++;
1390 case IWM_RX_TICKET_DROP:
1391 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1392 kfree_skb(packet->skb);
1395 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1396 le16_to_cpu(ticket_node->ticket->action));
1397 kfree_skb(packet->skb);
1401 iwm_rx_ticket_node_free(ticket_node);
1405 * Rx data processing:
1407 * We're receiving Rx packet from the LMAC, and Rx ticket from
1409 * To forward a target data packet upstream (i.e. to the
1410 * kernel network stack), we must have received an Rx ticket
1411 * that tells us we're allowed to release this packet (ticket
1412 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1413 * among other things, where valid data actually starts in the Rx
1416 void iwm_rx_worker(struct work_struct *work)
1418 struct iwm_priv *iwm;
1419 struct iwm_rx_ticket_node *ticket, *next;
1421 iwm = container_of(work, struct iwm_priv, rx_worker);
1424 * We go through the tickets list and if there is a pending
1425 * packet for it, we push it upstream.
1426 * We stop whenever a ticket is missing its packet, as we're
1427 * supposed to send the packets in order.
1429 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1430 struct iwm_rx_packet *packet =
1431 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1434 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1435 "to be handled first\n",
1436 le16_to_cpu(ticket->ticket->id));
1440 list_del(&ticket->node);
1441 list_del(&packet->node);
1442 iwm_rx_process_packet(iwm, packet, ticket);