1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
7 #include <linux/ieee80211.h>
8 #include <linux/etherdevice.h>
14 #include "iwl-trans.h"
15 #include "iwl-nvm-utils.h"
16 #include "iwl-utils.h"
19 #include "time-sync.h"
22 iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr,
25 struct iwl_fw_dbg_trigger_tlv *trig;
26 struct iwl_fw_dbg_trigger_ba *ba_trig;
28 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_BA);
32 ba_trig = (void *)trig->data;
34 if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid)))
37 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
38 "BAR sent to %pM, tid %d, ssn %d",
42 #define OPT_HDR(type, skb, off) \
43 (type *)(skb_network_header(skb) + (off))
45 static u32 iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb,
46 struct ieee80211_tx_info *info,
49 struct ieee80211_hdr *hdr = (void *)skb->data;
50 u16 mh_len = ieee80211_hdrlen(hdr->frame_control);
51 u16 offload_assist = 0;
52 #if IS_ENABLED(CONFIG_INET)
55 /* Do not compute checksum if already computed */
56 if (skb->ip_summed != CHECKSUM_PARTIAL)
59 /* We do not expect to be requested to csum stuff we do not support */
60 if (WARN_ONCE(!(mvm->hw->netdev_features & IWL_TX_CSUM_NETIF_FLAGS) ||
61 (skb->protocol != htons(ETH_P_IP) &&
62 skb->protocol != htons(ETH_P_IPV6)),
63 "No support for requested checksum\n")) {
64 skb_checksum_help(skb);
68 if (skb->protocol == htons(ETH_P_IP)) {
69 protocol = ip_hdr(skb)->protocol;
71 #if IS_ENABLED(CONFIG_IPV6)
72 struct ipv6hdr *ipv6h =
73 (struct ipv6hdr *)skb_network_header(skb);
74 unsigned int off = sizeof(*ipv6h);
76 protocol = ipv6h->nexthdr;
77 while (protocol != NEXTHDR_NONE && ipv6_ext_hdr(protocol)) {
78 struct ipv6_opt_hdr *hp;
80 /* only supported extension headers */
81 if (protocol != NEXTHDR_ROUTING &&
82 protocol != NEXTHDR_HOP &&
83 protocol != NEXTHDR_DEST) {
84 skb_checksum_help(skb);
88 hp = OPT_HDR(struct ipv6_opt_hdr, skb, off);
89 protocol = hp->nexthdr;
90 off += ipv6_optlen(hp);
92 /* if we get here - protocol now should be TCP/UDP */
96 if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) {
98 skb_checksum_help(skb);
103 offload_assist |= BIT(TX_CMD_OFFLD_L4_EN);
106 * Set offset to IP header (snap).
107 * We don't support tunneling so no need to take care of inner header.
110 offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR);
112 /* Do IPv4 csum for AMSDU only (no IP csum for Ipv6) */
113 if (skb->protocol == htons(ETH_P_IP) && amsdu) {
114 ip_hdr(skb)->check = 0;
115 offload_assist |= BIT(TX_CMD_OFFLD_L3_EN);
118 /* reset UDP/TCP header csum */
119 if (protocol == IPPROTO_TCP)
120 tcp_hdr(skb)->check = 0;
122 udp_hdr(skb)->check = 0;
127 * mac header len should include IV, size is in words unless
128 * the IV is added by the firmware like in WEP.
129 * In new Tx API, the IV is always added by the firmware.
131 if (!iwl_mvm_has_new_tx_api(mvm) && info->control.hw_key &&
132 info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP40 &&
133 info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP104)
134 mh_len += info->control.hw_key->iv_len;
136 offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE;
139 offload_assist |= BIT(TX_CMD_OFFLD_AMSDU);
140 else if (ieee80211_hdrlen(hdr->frame_control) % 4)
141 /* padding is inserted later in transport */
142 offload_assist |= BIT(TX_CMD_OFFLD_PAD);
144 return offload_assist;
148 * Sets most of the Tx cmd's fields
150 void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb,
151 struct iwl_tx_cmd *tx_cmd,
152 struct ieee80211_tx_info *info, u8 sta_id)
154 struct ieee80211_hdr *hdr = (void *)skb->data;
155 __le16 fc = hdr->frame_control;
156 u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags);
157 u32 len = skb->len + FCS_LEN;
161 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) ||
162 (ieee80211_is_probe_resp(fc) &&
163 !is_multicast_ether_addr(hdr->addr1)))
164 tx_flags |= TX_CMD_FLG_ACK;
166 tx_flags &= ~TX_CMD_FLG_ACK;
168 if (ieee80211_is_probe_resp(fc))
169 tx_flags |= TX_CMD_FLG_TSF;
171 if (ieee80211_has_morefrags(fc))
172 tx_flags |= TX_CMD_FLG_MORE_FRAG;
174 if (ieee80211_is_data_qos(fc)) {
175 u8 *qc = ieee80211_get_qos_ctl(hdr);
176 tx_cmd->tid_tspec = qc[0] & 0xf;
177 tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
178 amsdu = *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT;
179 } else if (ieee80211_is_back_req(fc)) {
180 struct ieee80211_bar *bar = (void *)skb->data;
181 u16 control = le16_to_cpu(bar->control);
182 u16 ssn = le16_to_cpu(bar->start_seq_num);
184 tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR;
185 tx_cmd->tid_tspec = (control &
186 IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
187 IEEE80211_BAR_CTRL_TID_INFO_SHIFT;
188 WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT);
189 iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec,
192 if (ieee80211_is_data(fc))
193 tx_cmd->tid_tspec = IWL_TID_NON_QOS;
195 tx_cmd->tid_tspec = IWL_MAX_TID_COUNT;
197 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
198 tx_flags |= TX_CMD_FLG_SEQ_CTL;
200 tx_flags &= ~TX_CMD_FLG_SEQ_CTL;
203 /* Default to 0 (BE) when tid_spec is set to IWL_MAX_TID_COUNT */
204 if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT)
205 ac = tid_to_mac80211_ac[tx_cmd->tid_tspec];
207 ac = tid_to_mac80211_ac[0];
209 tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) <<
210 TX_CMD_FLG_BT_PRIO_POS;
212 if (ieee80211_is_mgmt(fc)) {
213 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
214 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC);
215 else if (ieee80211_is_action(fc))
216 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
218 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
220 /* The spec allows Action frames in A-MPDU, we don't support
223 WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU);
224 } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) {
225 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT);
227 tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE);
230 if (ieee80211_is_data(fc) && len > mvm->rts_threshold &&
231 !is_multicast_ether_addr(hdr->addr1))
232 tx_flags |= TX_CMD_FLG_PROT_REQUIRE;
234 if (fw_has_capa(&mvm->fw->ucode_capa,
235 IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) &&
236 ieee80211_action_contains_tpc(skb))
237 tx_flags |= TX_CMD_FLG_WRITE_TX_POWER;
239 tx_cmd->tx_flags = cpu_to_le32(tx_flags);
240 /* Total # bytes to be transmitted - PCIe code will adjust for A-MSDU */
241 tx_cmd->len = cpu_to_le16((u16)skb->len);
242 tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
243 tx_cmd->sta_id = sta_id;
245 tx_cmd->offload_assist =
246 cpu_to_le16(iwl_mvm_tx_csum(mvm, skb, info, amsdu));
249 static u32 iwl_mvm_get_tx_ant(struct iwl_mvm *mvm,
250 struct ieee80211_tx_info *info,
251 struct ieee80211_sta *sta, __le16 fc)
253 if (info->band == NL80211_BAND_2GHZ &&
254 !iwl_mvm_bt_coex_is_shared_ant_avail(mvm))
255 return mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS;
257 if (sta && ieee80211_is_data(fc)) {
258 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
260 return BIT(mvmsta->tx_ant) << RATE_MCS_ANT_POS;
263 return BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS;
266 static u32 iwl_mvm_convert_rate_idx(struct iwl_mvm *mvm,
267 struct ieee80211_tx_info *info,
274 /* if the rate isn't a well known legacy rate, take the lowest one */
275 if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY)
276 rate_idx = iwl_mvm_mac_ctxt_get_lowest_rate(mvm,
280 /* Get PLCP rate for tx_cmd->rate_n_flags */
281 rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx);
282 is_cck = (rate_idx >= IWL_FIRST_CCK_RATE) &&
283 (rate_idx <= IWL_LAST_CCK_RATE);
285 /* Set CCK or OFDM flag */
286 if (iwl_fw_lookup_cmd_ver(mvm->fw, TX_CMD, 0) > 8) {
288 rate_flags |= RATE_MCS_LEGACY_OFDM_MSK;
290 rate_flags |= RATE_MCS_CCK_MSK;
292 rate_flags |= RATE_MCS_CCK_MSK_V1;
295 return (u32)rate_plcp | rate_flags;
298 static u32 iwl_mvm_get_inject_tx_rate(struct iwl_mvm *mvm,
299 struct ieee80211_tx_info *info,
300 struct ieee80211_sta *sta,
303 struct ieee80211_tx_rate *rate = &info->control.rates[0];
307 * we only care about legacy/HT/VHT so far, so we can
308 * build in v1 and use iwl_new_rate_from_v1()
311 if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
312 u8 mcs = ieee80211_rate_get_vht_mcs(rate);
313 u8 nss = ieee80211_rate_get_vht_nss(rate);
315 result = RATE_MCS_VHT_MSK_V1;
316 result |= u32_encode_bits(mcs, RATE_VHT_MCS_RATE_CODE_MSK);
317 result |= u32_encode_bits(nss, RATE_MCS_NSS_MSK);
318 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
319 result |= RATE_MCS_SGI_MSK_V1;
320 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
321 result |= u32_encode_bits(1, RATE_MCS_CHAN_WIDTH_MSK_V1);
322 else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
323 result |= u32_encode_bits(2, RATE_MCS_CHAN_WIDTH_MSK_V1);
324 else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
325 result |= u32_encode_bits(3, RATE_MCS_CHAN_WIDTH_MSK_V1);
327 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TX_CMD, 0) > 6)
328 result = iwl_new_rate_from_v1(result);
329 } else if (rate->flags & IEEE80211_TX_RC_MCS) {
330 result = RATE_MCS_HT_MSK_V1;
331 result |= u32_encode_bits(rate->idx,
332 RATE_HT_MCS_RATE_CODE_MSK_V1 |
333 RATE_HT_MCS_NSS_MSK_V1);
334 if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
335 result |= RATE_MCS_SGI_MSK_V1;
336 if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
337 result |= u32_encode_bits(1, RATE_MCS_CHAN_WIDTH_MSK_V1);
338 if (info->flags & IEEE80211_TX_CTL_LDPC)
339 result |= RATE_MCS_LDPC_MSK_V1;
340 if (u32_get_bits(info->flags, IEEE80211_TX_CTL_STBC))
341 result |= RATE_MCS_STBC_MSK;
343 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TX_CMD, 0) > 6)
344 result = iwl_new_rate_from_v1(result);
346 int rate_idx = info->control.rates[0].idx;
348 result = iwl_mvm_convert_rate_idx(mvm, info, rate_idx);
351 if (info->control.antennas)
352 result |= u32_encode_bits(info->control.antennas,
353 RATE_MCS_ANT_AB_MSK);
355 result |= iwl_mvm_get_tx_ant(mvm, info, sta, fc);
360 static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm,
361 struct ieee80211_tx_info *info,
362 struct ieee80211_sta *sta, __le16 fc)
366 if (!ieee80211_hw_check(mvm->hw, HAS_RATE_CONTROL)) {
367 /* info->control is only relevant for non HW rate control */
369 /* HT rate doesn't make sense for a non data frame */
370 WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS &&
371 !ieee80211_is_data(fc),
372 "Got a HT rate (flags:0x%x/mcs:%d/fc:0x%x/state:%d) for a non data frame\n",
373 info->control.rates[0].flags,
374 info->control.rates[0].idx,
376 sta ? iwl_mvm_sta_from_mac80211(sta)->sta_state : -1);
378 rate_idx = info->control.rates[0].idx;
380 /* For non 2 GHZ band, remap mac80211 rate indices into driver
383 if (info->band != NL80211_BAND_2GHZ ||
384 (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE))
385 rate_idx += IWL_FIRST_OFDM_RATE;
387 /* For 2.4 GHZ band, check that there is no need to remap */
388 BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0);
391 return iwl_mvm_convert_rate_idx(mvm, info, rate_idx);
394 static u32 iwl_mvm_get_tx_rate_n_flags(struct iwl_mvm *mvm,
395 struct ieee80211_tx_info *info,
396 struct ieee80211_sta *sta, __le16 fc)
398 if (unlikely(info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT))
399 return iwl_mvm_get_inject_tx_rate(mvm, info, sta, fc);
401 return iwl_mvm_get_tx_rate(mvm, info, sta, fc) |
402 iwl_mvm_get_tx_ant(mvm, info, sta, fc);
406 * Sets the fields in the Tx cmd that are rate related
408 void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd,
409 struct ieee80211_tx_info *info,
410 struct ieee80211_sta *sta, __le16 fc)
412 /* Set retry limit on RTS packets */
413 tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT;
415 /* Set retry limit on DATA packets and Probe Responses*/
416 if (ieee80211_is_probe_resp(fc)) {
417 tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT;
418 tx_cmd->rts_retry_limit =
419 min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit);
420 } else if (ieee80211_is_back_req(fc)) {
421 tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT;
423 tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY;
427 * for data packets, rate info comes from the table inside the fw. This
428 * table is controlled by LINK_QUALITY commands
431 if (likely(ieee80211_is_data(fc) && sta &&
432 !(info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT))) {
433 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
435 if (mvmsta->sta_state >= IEEE80211_STA_AUTHORIZED) {
436 tx_cmd->initial_rate_index = 0;
437 tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE);
440 } else if (ieee80211_is_back_req(fc)) {
442 cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR);
445 /* Set the rate in the TX cmd */
446 tx_cmd->rate_n_flags =
447 cpu_to_le32(iwl_mvm_get_tx_rate_n_flags(mvm, info, sta, fc));
450 static inline void iwl_mvm_set_tx_cmd_pn(struct ieee80211_tx_info *info,
453 struct ieee80211_key_conf *keyconf = info->control.hw_key;
456 pn = atomic64_inc_return(&keyconf->tx_pn);
459 crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6);
460 crypto_hdr[1] = pn >> 8;
461 crypto_hdr[4] = pn >> 16;
462 crypto_hdr[5] = pn >> 24;
463 crypto_hdr[6] = pn >> 32;
464 crypto_hdr[7] = pn >> 40;
468 * Sets the fields in the Tx cmd that are crypto related
470 static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm,
471 struct ieee80211_tx_info *info,
472 struct iwl_tx_cmd *tx_cmd,
473 struct sk_buff *skb_frag,
476 struct ieee80211_key_conf *keyconf = info->control.hw_key;
477 u8 *crypto_hdr = skb_frag->data + hdrlen;
478 enum iwl_tx_cmd_sec_ctrl type = TX_CMD_SEC_CCM;
481 switch (keyconf->cipher) {
482 case WLAN_CIPHER_SUITE_CCMP:
483 iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd);
484 iwl_mvm_set_tx_cmd_pn(info, crypto_hdr);
487 case WLAN_CIPHER_SUITE_TKIP:
488 tx_cmd->sec_ctl = TX_CMD_SEC_TKIP;
489 pn = atomic64_inc_return(&keyconf->tx_pn);
490 ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn);
491 ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key);
494 case WLAN_CIPHER_SUITE_WEP104:
495 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
497 case WLAN_CIPHER_SUITE_WEP40:
498 tx_cmd->sec_ctl |= TX_CMD_SEC_WEP |
499 ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) &
500 TX_CMD_SEC_WEP_KEY_IDX_MSK);
502 memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen);
504 case WLAN_CIPHER_SUITE_GCMP:
505 case WLAN_CIPHER_SUITE_GCMP_256:
506 type = TX_CMD_SEC_GCMP;
508 case WLAN_CIPHER_SUITE_CCMP_256:
509 /* TODO: Taking the key from the table might introduce a race
510 * when PTK rekeying is done, having an old packets with a PN
511 * based on the old key but the message encrypted with a new
513 * Need to handle this.
515 tx_cmd->sec_ctl |= type | TX_CMD_SEC_KEY_FROM_TABLE;
516 tx_cmd->key[0] = keyconf->hw_key_idx;
517 iwl_mvm_set_tx_cmd_pn(info, crypto_hdr);
520 tx_cmd->sec_ctl |= TX_CMD_SEC_EXT;
524 static bool iwl_mvm_use_host_rate(struct iwl_mvm *mvm,
525 struct iwl_mvm_sta *mvmsta,
526 struct ieee80211_hdr *hdr,
527 struct ieee80211_tx_info *info)
529 if (unlikely(!mvmsta))
532 if (unlikely(info->control.flags & IEEE80211_TX_CTRL_RATE_INJECT))
535 if (likely(ieee80211_is_data(hdr->frame_control) &&
536 mvmsta->sta_state >= IEEE80211_STA_AUTHORIZED))
540 * Not a data frame, use host rate if on an old device that
541 * can't possibly be doing MLO (firmware may be selecting a
542 * bad rate), if we might be doing MLO we need to let FW pick
543 * (since we don't necesarily know the link), but FW rate
544 * selection was fixed.
546 return mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ;
549 static void iwl_mvm_copy_hdr(void *cmd, const void *hdr, int hdrlen,
550 const u8 *addr3_override)
552 struct ieee80211_hdr *out_hdr = cmd;
554 memcpy(cmd, hdr, hdrlen);
556 memcpy(out_hdr->addr3, addr3_override, ETH_ALEN);
560 * Allocates and sets the Tx cmd the driver data pointers in the skb
562 static struct iwl_device_tx_cmd *
563 iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb,
564 struct ieee80211_tx_info *info, int hdrlen,
565 struct ieee80211_sta *sta, u8 sta_id,
566 const u8 *addr3_override)
568 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
569 struct iwl_device_tx_cmd *dev_cmd;
570 struct iwl_tx_cmd *tx_cmd;
572 dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans);
574 if (unlikely(!dev_cmd))
577 dev_cmd->hdr.cmd = TX_CMD;
579 if (iwl_mvm_has_new_tx_api(mvm)) {
580 u32 rate_n_flags = 0;
582 struct iwl_mvm_sta *mvmsta = sta ?
583 iwl_mvm_sta_from_mac80211(sta) : NULL;
586 if (ieee80211_is_data_qos(hdr->frame_control)) {
587 u8 *qc = ieee80211_get_qos_ctl(hdr);
589 amsdu = *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT;
592 if (!info->control.hw_key)
593 flags |= IWL_TX_FLAGS_ENCRYPT_DIS;
596 * For data and mgmt packets rate info comes from the fw (for
597 * new devices, older FW is somewhat broken for this). Only
598 * set rate/antenna for injected frames with fixed rate, or
599 * when no sta is given, or with older firmware.
601 if (unlikely(iwl_mvm_use_host_rate(mvm, mvmsta, hdr, info))) {
602 flags |= IWL_TX_FLAGS_CMD_RATE;
604 iwl_mvm_get_tx_rate_n_flags(mvm, info, sta,
606 } else if (!ieee80211_is_data(hdr->frame_control) ||
607 mvmsta->sta_state < IEEE80211_STA_AUTHORIZED) {
608 /* These are important frames */
609 flags |= IWL_TX_FLAGS_HIGH_PRI;
612 if (mvm->trans->trans_cfg->device_family >=
613 IWL_DEVICE_FAMILY_AX210) {
614 struct iwl_tx_cmd_gen3 *cmd = (void *)dev_cmd->payload;
615 u32 offload_assist = iwl_mvm_tx_csum(mvm, skb,
618 cmd->offload_assist = cpu_to_le32(offload_assist);
620 /* Total # bytes to be transmitted */
621 cmd->len = cpu_to_le16((u16)skb->len);
623 /* Copy MAC header from skb into command buffer */
624 iwl_mvm_copy_hdr(cmd->hdr, hdr, hdrlen, addr3_override);
626 cmd->flags = cpu_to_le16(flags);
627 cmd->rate_n_flags = cpu_to_le32(rate_n_flags);
629 struct iwl_tx_cmd_gen2 *cmd = (void *)dev_cmd->payload;
630 u16 offload_assist = iwl_mvm_tx_csum(mvm, skb,
633 cmd->offload_assist = cpu_to_le16(offload_assist);
635 /* Total # bytes to be transmitted */
636 cmd->len = cpu_to_le16((u16)skb->len);
638 /* Copy MAC header from skb into command buffer */
639 iwl_mvm_copy_hdr(cmd->hdr, hdr, hdrlen, addr3_override);
641 cmd->flags = cpu_to_le32(flags);
642 cmd->rate_n_flags = cpu_to_le32(rate_n_flags);
647 tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload;
649 if (info->control.hw_key)
650 iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen);
652 iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id);
654 iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control);
656 /* Copy MAC header from skb into command buffer */
657 iwl_mvm_copy_hdr(tx_cmd->hdr, hdr, hdrlen, addr3_override);
663 static void iwl_mvm_skb_prepare_status(struct sk_buff *skb,
664 struct iwl_device_tx_cmd *cmd)
666 struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb);
668 memset(&skb_info->status, 0, sizeof(skb_info->status));
669 memset(skb_info->driver_data, 0, sizeof(skb_info->driver_data));
671 skb_info->driver_data[1] = cmd;
674 static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm,
675 struct iwl_mvm_vif_link_info *link,
676 struct ieee80211_tx_info *info,
679 struct ieee80211_hdr *hdr = (void *)skb->data;
680 __le16 fc = hdr->frame_control;
682 switch (info->control.vif->type) {
683 case NL80211_IFTYPE_AP:
684 case NL80211_IFTYPE_ADHOC:
686 * Non-bufferable frames use the broadcast station, thus they
687 * use the probe queue.
688 * Also take care of the case where we send a deauth to a
689 * station that we don't have, or similarly an association
690 * response (with non-success status) for a station we can't
692 * Also, disassociate frames might happen, particular with
693 * reason 7 ("Class 3 frame received from nonassociated STA").
695 if (ieee80211_is_mgmt(fc) &&
696 (!ieee80211_is_bufferable_mmpdu(skb) ||
697 ieee80211_is_deauth(fc) || ieee80211_is_disassoc(fc)))
698 return link->mgmt_queue;
700 if (!ieee80211_has_order(fc) && !ieee80211_is_probe_req(fc) &&
701 is_multicast_ether_addr(hdr->addr1))
702 return link->cab_queue;
704 WARN_ONCE(info->control.vif->type != NL80211_IFTYPE_ADHOC,
705 "fc=0x%02x", le16_to_cpu(fc));
706 return link->mgmt_queue;
707 case NL80211_IFTYPE_P2P_DEVICE:
708 if (ieee80211_is_mgmt(fc))
709 return mvm->p2p_dev_queue;
712 return mvm->p2p_dev_queue;
714 WARN_ONCE(1, "Not a ctrl vif, no available queue\n");
719 static void iwl_mvm_probe_resp_set_noa(struct iwl_mvm *mvm,
722 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
723 struct iwl_mvm_vif *mvmvif =
724 iwl_mvm_vif_from_mac80211(info->control.vif);
725 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
726 int base_len = (u8 *)mgmt->u.probe_resp.variable - (u8 *)mgmt;
727 struct iwl_probe_resp_data *resp_data;
731 (WLAN_OUI_WFA >> 16) & 0xff,
732 (WLAN_OUI_WFA >> 8) & 0xff,
734 WLAN_OUI_TYPE_WFA_P2P,
739 resp_data = rcu_dereference(mvmvif->deflink.probe_resp_data);
743 if (!resp_data->notif.noa_active)
746 ie = cfg80211_find_ie_match(WLAN_EID_VENDOR_SPECIFIC,
747 mgmt->u.probe_resp.variable,
751 IWL_DEBUG_TX(mvm, "probe resp doesn't have P2P IE\n");
755 if (skb_tailroom(skb) < resp_data->noa_len) {
756 if (pskb_expand_head(skb, 0, resp_data->noa_len, GFP_ATOMIC)) {
758 "Failed to reallocate probe resp\n");
763 pos = skb_put(skb, resp_data->noa_len);
765 *pos++ = WLAN_EID_VENDOR_SPECIFIC;
766 /* Set length of IE body (not including ID and length itself) */
767 *pos++ = resp_data->noa_len - 2;
768 *pos++ = (WLAN_OUI_WFA >> 16) & 0xff;
769 *pos++ = (WLAN_OUI_WFA >> 8) & 0xff;
770 *pos++ = WLAN_OUI_WFA & 0xff;
771 *pos++ = WLAN_OUI_TYPE_WFA_P2P;
773 memcpy(pos, &resp_data->notif.noa_attr,
774 resp_data->noa_len - sizeof(struct ieee80211_vendor_ie));
780 int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb)
782 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
783 struct ieee80211_tx_info info;
784 struct iwl_device_tx_cmd *dev_cmd;
786 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
787 __le16 fc = hdr->frame_control;
788 bool offchannel = IEEE80211_SKB_CB(skb)->flags &
789 IEEE80211_TX_CTL_TX_OFFCHAN;
792 if (IWL_MVM_NON_TRANSMITTING_AP && ieee80211_is_probe_resp(fc))
795 memcpy(&info, skb->cb, sizeof(info));
797 if (WARN_ON_ONCE(skb->len > IEEE80211_MAX_DATA_LEN + hdrlen))
800 if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_AMPDU))
803 if (info.control.vif) {
804 struct iwl_mvm_vif *mvmvif =
805 iwl_mvm_vif_from_mac80211(info.control.vif);
806 bool p2p_aux = iwl_mvm_has_p2p_over_aux(mvm);
808 if ((info.control.vif->type == NL80211_IFTYPE_P2P_DEVICE &&
810 (info.control.vif->type == NL80211_IFTYPE_STATION &&
813 * IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets
814 * that can be used in 2 different types of vifs, P2P
815 * Device and STATION.
816 * P2P Device uses the offchannel queue.
817 * STATION (HS2.0) uses the auxiliary context of the FW,
818 * and hence needs to be sent on the aux queue.
819 * If P2P_DEV_OVER_AUX is supported (p2p_aux = true)
820 * also P2P Device uses the aux queue.
822 sta_id = mvm->aux_sta.sta_id;
823 queue = mvm->aux_queue;
824 if (WARN_ON(queue == IWL_MVM_INVALID_QUEUE))
826 } else if (info.control.vif->type ==
827 NL80211_IFTYPE_P2P_DEVICE ||
828 info.control.vif->type == NL80211_IFTYPE_AP ||
829 info.control.vif->type == NL80211_IFTYPE_ADHOC) {
830 u32 link_id = u32_get_bits(info.control.flags,
831 IEEE80211_TX_CTRL_MLO_LINK);
832 struct iwl_mvm_vif_link_info *link;
834 if (link_id == IEEE80211_LINK_UNSPECIFIED) {
835 if (info.control.vif->active_links)
836 link_id = ffs(info.control.vif->active_links) - 1;
841 link = mvmvif->link[link_id];
845 if (!ieee80211_is_data(hdr->frame_control))
846 sta_id = link->bcast_sta.sta_id;
848 sta_id = link->mcast_sta.sta_id;
850 queue = iwl_mvm_get_ctrl_vif_queue(mvm, link, &info,
852 } else if (info.control.vif->type == NL80211_IFTYPE_MONITOR) {
853 queue = mvm->snif_queue;
854 sta_id = mvm->snif_sta.sta_id;
859 IWL_ERR(mvm, "No queue was found. Dropping TX\n");
863 if (unlikely(ieee80211_is_probe_resp(fc)))
864 iwl_mvm_probe_resp_set_noa(mvm, skb);
866 IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue);
868 dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id,
873 /* From now on, we cannot access info->control */
874 iwl_mvm_skb_prepare_status(skb, dev_cmd);
876 if (iwl_trans_tx(mvm->trans, skb, dev_cmd, queue)) {
877 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
884 unsigned int iwl_mvm_max_amsdu_size(struct iwl_mvm *mvm,
885 struct ieee80211_sta *sta, unsigned int tid)
887 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
888 u8 ac = tid_to_mac80211_ac[tid];
889 enum nl80211_band band;
894 /* For HE redirect to trigger based fifos */
895 if (sta->deflink.he_cap.has_he && !WARN_ON(!iwl_mvm_has_new_tx_api(mvm)))
898 txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);
901 * Don't send an AMSDU that will be longer than the TXF.
902 * Add a security margin of 256 for the TX command + headers.
903 * We also want to have the start of the next packet inside the
904 * fifo to be able to send bursts.
906 val = mvmsta->max_amsdu_len;
908 if (hweight16(sta->valid_links) <= 1) {
909 if (sta->valid_links) {
910 struct ieee80211_bss_conf *link_conf;
911 unsigned int link = ffs(sta->valid_links) - 1;
914 link_conf = rcu_dereference(mvmsta->vif->link_conf[link]);
915 if (WARN_ON(!link_conf))
916 band = NL80211_BAND_2GHZ;
918 band = link_conf->chanreq.oper.chan->band;
921 band = mvmsta->vif->bss_conf.chanreq.oper.chan->band;
924 lmac = iwl_mvm_get_lmac_id(mvm, band);
925 } else if (fw_has_capa(&mvm->fw->ucode_capa,
926 IWL_UCODE_TLV_CAPA_CDB_SUPPORT)) {
927 /* for real MLO restrict to both LMACs if they exist */
928 lmac = IWL_LMAC_5G_INDEX;
929 val = min_t(unsigned int, val,
930 mvm->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256);
931 lmac = IWL_LMAC_24G_INDEX;
933 lmac = IWL_LMAC_24G_INDEX;
936 return min_t(unsigned int, val,
937 mvm->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256);
942 static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
943 struct ieee80211_tx_info *info,
944 struct ieee80211_sta *sta,
945 struct sk_buff_head *mpdus_skb)
947 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
948 struct ieee80211_hdr *hdr = (void *)skb->data;
949 unsigned int mss = skb_shinfo(skb)->gso_size;
950 unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len;
951 u16 snap_ip_tcp, pad;
952 netdev_features_t netdev_flags = NETIF_F_CSUM_MASK | NETIF_F_SG;
955 snap_ip_tcp = 8 + skb_network_header_len(skb) + tcp_hdrlen(skb);
957 if (!mvmsta->max_amsdu_len ||
958 !ieee80211_is_data_qos(hdr->frame_control) ||
959 !mvmsta->amsdu_enabled)
960 return iwl_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
963 * Do not build AMSDU for IPv6 with extension headers.
964 * ask stack to segment and checkum the generated MPDUs for us.
966 if (skb->protocol == htons(ETH_P_IPV6) &&
967 ((struct ipv6hdr *)skb_network_header(skb))->nexthdr !=
969 netdev_flags &= ~NETIF_F_CSUM_MASK;
970 return iwl_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
973 tid = ieee80211_get_tid(hdr);
974 if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))
978 * No need to lock amsdu_in_ampdu_allowed since it can't be modified
979 * during an BA session.
981 if ((info->flags & IEEE80211_TX_CTL_AMPDU &&
982 !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) ||
983 !(mvmsta->amsdu_enabled & BIT(tid)))
984 return iwl_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
987 * Take the min of ieee80211 station and mvm station
990 min_t(unsigned int, sta->cur->max_amsdu_len,
991 iwl_mvm_max_amsdu_size(mvm, sta, tid));
994 * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not
995 * supported. This is a spec requirement (IEEE 802.11-2015
996 * section 8.7.3 NOTE 3).
998 if (info->flags & IEEE80211_TX_CTL_AMPDU &&
999 !sta->deflink.vht_cap.vht_supported)
1000 max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095);
1002 /* Sub frame header + SNAP + IP header + TCP header + MSS */
1003 subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss;
1004 pad = (4 - subf_len) & 0x3;
1007 * If we have N subframes in the A-MSDU, then the A-MSDU's size is
1008 * N * subf_len + (N - 1) * pad.
1010 num_subframes = (max_amsdu_len + pad) / (subf_len + pad);
1012 if (sta->max_amsdu_subframes &&
1013 num_subframes > sta->max_amsdu_subframes)
1014 num_subframes = sta->max_amsdu_subframes;
1016 tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
1017 tcp_hdrlen(skb) + skb->data_len;
1020 * Make sure we have enough TBs for the A-MSDU:
1021 * 2 for each subframe
1022 * 1 more for each fragment
1023 * 1 more for the potential data in the header
1025 if ((num_subframes * 2 + skb_shinfo(skb)->nr_frags + 1) >
1026 mvm->trans->max_skb_frags)
1029 if (num_subframes > 1)
1030 *ieee80211_get_qos_ctl(hdr) |= IEEE80211_QOS_CTL_A_MSDU_PRESENT;
1032 /* This skb fits in one single A-MSDU */
1033 if (num_subframes * mss >= tcp_payload_len) {
1034 __skb_queue_tail(mpdus_skb, skb);
1039 * Trick the segmentation function to make it
1040 * create SKBs that can fit into one A-MSDU.
1042 return iwl_tx_tso_segment(skb, num_subframes, netdev_flags, mpdus_skb);
1044 #else /* CONFIG_INET */
1045 static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
1046 struct ieee80211_tx_info *info,
1047 struct ieee80211_sta *sta,
1048 struct sk_buff_head *mpdus_skb)
1050 /* Impossible to get TSO with CONFIG_INET */
1057 /* Check if there are any timed-out TIDs on a given shared TXQ */
1058 static bool iwl_mvm_txq_should_update(struct iwl_mvm *mvm, int txq_id)
1060 unsigned long queue_tid_bitmap = mvm->queue_info[txq_id].tid_bitmap;
1061 unsigned long now = jiffies;
1064 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1067 for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1068 if (time_before(mvm->queue_info[txq_id].last_frame_time[tid] +
1069 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1076 static void iwl_mvm_tx_airtime(struct iwl_mvm *mvm,
1077 struct iwl_mvm_sta *mvmsta,
1080 int mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
1081 struct iwl_mvm_tcm_mac *mdata;
1083 if (mac >= NUM_MAC_INDEX_DRIVER)
1086 mdata = &mvm->tcm.data[mac];
1088 if (mvm->tcm.paused)
1091 if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
1092 schedule_delayed_work(&mvm->tcm.work, 0);
1094 mdata->tx.airtime += airtime;
1097 static int iwl_mvm_tx_pkt_queued(struct iwl_mvm *mvm,
1098 struct iwl_mvm_sta *mvmsta, int tid)
1100 u32 ac = tid_to_mac80211_ac[tid];
1101 int mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
1102 struct iwl_mvm_tcm_mac *mdata;
1104 if (mac >= NUM_MAC_INDEX_DRIVER)
1107 mdata = &mvm->tcm.data[mac];
1109 mdata->tx.pkts[ac]++;
1115 * Sets the fields in the Tx cmd that are crypto related.
1117 * This function must be called with BHs disabled.
1119 static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb,
1120 struct ieee80211_tx_info *info,
1121 struct ieee80211_sta *sta,
1122 const u8 *addr3_override)
1124 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1125 struct iwl_mvm_sta *mvmsta;
1126 struct iwl_device_tx_cmd *dev_cmd;
1129 u8 tid = IWL_MAX_TID_COUNT;
1131 bool is_ampdu = false;
1134 if (WARN_ON_ONCE(!sta))
1137 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1138 fc = hdr->frame_control;
1139 hdrlen = ieee80211_hdrlen(fc);
1141 if (IWL_MVM_NON_TRANSMITTING_AP && ieee80211_is_probe_resp(fc))
1144 if (WARN_ON_ONCE(mvmsta->deflink.sta_id == IWL_INVALID_STA))
1147 if (unlikely(ieee80211_is_any_nullfunc(fc)) && sta->deflink.he_cap.has_he)
1150 if (unlikely(ieee80211_is_probe_resp(fc)))
1151 iwl_mvm_probe_resp_set_noa(mvm, skb);
1153 dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen,
1154 sta, mvmsta->deflink.sta_id,
1160 * we handle that entirely ourselves -- for uAPSD the firmware
1161 * will always send a notification, and for PS-Poll responses
1162 * we'll notify mac80211 when getting frame status
1164 info->flags &= ~IEEE80211_TX_STATUS_EOSP;
1166 spin_lock(&mvmsta->lock);
1168 /* nullfunc frames should go to the MGMT queue regardless of QOS,
1169 * the conditions of !ieee80211_is_qos_nullfunc(fc) and
1170 * !ieee80211_is_data_qos(fc) keep the default assignment of MGMT TID
1172 if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) {
1173 tid = ieee80211_get_tid(hdr);
1174 if (WARN_ONCE(tid >= IWL_MAX_TID_COUNT, "Invalid TID %d", tid))
1175 goto drop_unlock_sta;
1177 is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU;
1178 if (WARN_ONCE(is_ampdu &&
1179 mvmsta->tid_data[tid].state != IWL_AGG_ON,
1180 "Invalid internal agg state %d for TID %d",
1181 mvmsta->tid_data[tid].state, tid))
1182 goto drop_unlock_sta;
1184 seq_number = mvmsta->tid_data[tid].seq_number;
1185 seq_number &= IEEE80211_SCTL_SEQ;
1187 if (!iwl_mvm_has_new_tx_api(mvm)) {
1188 struct iwl_tx_cmd *tx_cmd = (void *)dev_cmd->payload;
1190 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1191 hdr->seq_ctrl |= cpu_to_le16(seq_number);
1192 /* update the tx_cmd hdr as it was already copied */
1193 tx_cmd->hdr->seq_ctrl = hdr->seq_ctrl;
1195 } else if (ieee80211_is_data(fc) && !ieee80211_is_data_qos(fc) &&
1196 !ieee80211_is_nullfunc(fc)) {
1197 tid = IWL_TID_NON_QOS;
1200 txq_id = mvmsta->tid_data[tid].txq_id;
1202 WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM);
1204 if (WARN_ONCE(txq_id == IWL_MVM_INVALID_QUEUE, "Invalid TXQ id")) {
1205 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
1206 spin_unlock(&mvmsta->lock);
1210 if (!iwl_mvm_has_new_tx_api(mvm)) {
1211 /* Keep track of the time of the last frame for this RA/TID */
1212 mvm->queue_info[txq_id].last_frame_time[tid] = jiffies;
1215 * If we have timed-out TIDs - schedule the worker that will
1216 * reconfig the queues and update them
1218 * Note that the no lock is taken here in order to not serialize
1219 * the TX flow. This isn't dangerous because scheduling
1220 * mvm->add_stream_wk can't ruin the state, and if we DON'T
1221 * schedule it due to some race condition then next TX we get
1224 if (unlikely(mvm->queue_info[txq_id].status ==
1225 IWL_MVM_QUEUE_SHARED &&
1226 iwl_mvm_txq_should_update(mvm, txq_id)))
1227 schedule_work(&mvm->add_stream_wk);
1230 IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x len %d\n",
1231 mvmsta->deflink.sta_id, tid, txq_id,
1232 IEEE80211_SEQ_TO_SN(seq_number), skb->len);
1234 /* From now on, we cannot access info->control */
1235 iwl_mvm_skb_prepare_status(skb, dev_cmd);
1238 * The IV is introduced by the HW for new tx api, and it is not present
1239 * in the skb, hence, don't tell iwl_mvm_mei_tx_copy_to_csme about the
1240 * IV for those devices.
1242 if (ieee80211_is_data(fc))
1243 iwl_mvm_mei_tx_copy_to_csme(mvm, skb,
1244 info->control.hw_key &&
1245 !iwl_mvm_has_new_tx_api(mvm) ?
1246 info->control.hw_key->iv_len : 0);
1248 if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id))
1249 goto drop_unlock_sta;
1251 if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc))
1252 mvmsta->tid_data[tid].seq_number = seq_number + 0x10;
1254 spin_unlock(&mvmsta->lock);
1256 if (iwl_mvm_tx_pkt_queued(mvm, mvmsta,
1257 tid == IWL_MAX_TID_COUNT ? 0 : tid))
1263 iwl_trans_free_tx_cmd(mvm->trans, dev_cmd);
1264 spin_unlock(&mvmsta->lock);
1266 IWL_DEBUG_TX(mvm, "TX to [%d|%d] dropped\n", mvmsta->deflink.sta_id,
1271 int iwl_mvm_tx_skb_sta(struct iwl_mvm *mvm, struct sk_buff *skb,
1272 struct ieee80211_sta *sta)
1274 struct iwl_mvm_sta *mvmsta;
1275 struct ieee80211_tx_info info;
1276 struct sk_buff_head mpdus_skbs;
1277 struct ieee80211_vif *vif;
1278 unsigned int payload_len;
1280 struct sk_buff *orig_skb = skb;
1283 if (WARN_ON_ONCE(!sta))
1286 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1288 if (WARN_ON_ONCE(mvmsta->deflink.sta_id == IWL_INVALID_STA))
1291 memcpy(&info, skb->cb, sizeof(info));
1293 if (!skb_is_gso(skb))
1294 return iwl_mvm_tx_mpdu(mvm, skb, &info, sta, NULL);
1296 payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) -
1297 tcp_hdrlen(skb) + skb->data_len;
1299 if (payload_len <= skb_shinfo(skb)->gso_size)
1300 return iwl_mvm_tx_mpdu(mvm, skb, &info, sta, NULL);
1302 __skb_queue_head_init(&mpdus_skbs);
1304 vif = info.control.vif;
1308 ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs);
1312 WARN_ON(skb_queue_empty(&mpdus_skbs));
1315 * As described in IEEE sta 802.11-2020, table 9-30 (Address
1316 * field contents), A-MSDU address 3 should contain the BSSID
1318 * Pass address 3 down to iwl_mvm_tx_mpdu() and further to set it
1319 * in the command header. We need to preserve the original
1320 * address 3 in the skb header to correctly create all the
1321 * A-MSDU subframe headers from it.
1323 switch (vif->type) {
1324 case NL80211_IFTYPE_STATION:
1325 addr3 = vif->cfg.ap_addr;
1327 case NL80211_IFTYPE_AP:
1335 while (!skb_queue_empty(&mpdus_skbs)) {
1336 struct ieee80211_hdr *hdr;
1339 skb = __skb_dequeue(&mpdus_skbs);
1340 hdr = (void *)skb->data;
1341 amsdu = ieee80211_is_data_qos(hdr->frame_control) &&
1342 (*ieee80211_get_qos_ctl(hdr) &
1343 IEEE80211_QOS_CTL_A_MSDU_PRESENT);
1345 ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta,
1346 amsdu ? addr3 : NULL);
1348 /* Free skbs created as part of TSO logic that have not yet been dequeued */
1349 __skb_queue_purge(&mpdus_skbs);
1350 /* skb here is not necessarily same as skb that entered this method,
1351 * so free it explicitly.
1353 if (skb == orig_skb)
1354 ieee80211_free_txskb(mvm->hw, skb);
1357 /* there was error, but we consumed skb one way or another, so return 0 */
1365 static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm,
1366 struct ieee80211_sta *sta, u8 tid)
1368 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1369 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1370 struct ieee80211_vif *vif = mvmsta->vif;
1373 lockdep_assert_held(&mvmsta->lock);
1375 if ((tid_data->state == IWL_AGG_ON ||
1376 tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) &&
1377 iwl_mvm_tid_queued(mvm, tid_data) == 0) {
1379 * Now that this aggregation or DQA queue is empty tell
1380 * mac80211 so it knows we no longer have frames buffered for
1381 * the station on this TID (for the TIM bitmap calculation.)
1383 ieee80211_sta_set_buffered(sta, tid, false);
1387 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need
1388 * to align the wrap around of ssn so we compare relevant values.
1390 normalized_ssn = tid_data->ssn;
1391 if (mvm->trans->trans_cfg->gen2)
1392 normalized_ssn &= 0xff;
1394 if (normalized_ssn != tid_data->next_reclaimed)
1397 switch (tid_data->state) {
1398 case IWL_EMPTYING_HW_QUEUE_ADDBA:
1399 IWL_DEBUG_TX_QUEUES(mvm,
1400 "Can continue addBA flow ssn = next_recl = %d\n",
1401 tid_data->next_reclaimed);
1402 tid_data->state = IWL_AGG_STARTING;
1403 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1406 case IWL_EMPTYING_HW_QUEUE_DELBA:
1407 IWL_DEBUG_TX_QUEUES(mvm,
1408 "Can continue DELBA flow ssn = next_recl = %d\n",
1409 tid_data->next_reclaimed);
1410 tid_data->state = IWL_AGG_OFF;
1411 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1419 #ifdef CONFIG_IWLWIFI_DEBUG
1420 const char *iwl_mvm_get_tx_fail_reason(u32 status)
1422 #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
1423 #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
1425 switch (status & TX_STATUS_MSK) {
1426 case TX_STATUS_SUCCESS:
1428 TX_STATUS_POSTPONE(DELAY);
1429 TX_STATUS_POSTPONE(FEW_BYTES);
1430 TX_STATUS_POSTPONE(BT_PRIO);
1431 TX_STATUS_POSTPONE(QUIET_PERIOD);
1432 TX_STATUS_POSTPONE(CALC_TTAK);
1433 TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY);
1434 TX_STATUS_FAIL(SHORT_LIMIT);
1435 TX_STATUS_FAIL(LONG_LIMIT);
1436 TX_STATUS_FAIL(UNDERRUN);
1437 TX_STATUS_FAIL(DRAIN_FLOW);
1438 TX_STATUS_FAIL(RFKILL_FLUSH);
1439 TX_STATUS_FAIL(LIFE_EXPIRE);
1440 TX_STATUS_FAIL(DEST_PS);
1441 TX_STATUS_FAIL(HOST_ABORTED);
1442 TX_STATUS_FAIL(BT_RETRY);
1443 TX_STATUS_FAIL(STA_INVALID);
1444 TX_STATUS_FAIL(FRAG_DROPPED);
1445 TX_STATUS_FAIL(TID_DISABLE);
1446 TX_STATUS_FAIL(FIFO_FLUSHED);
1447 TX_STATUS_FAIL(SMALL_CF_POLL);
1448 TX_STATUS_FAIL(FW_DROP);
1449 TX_STATUS_FAIL(STA_COLOR_MISMATCH);
1454 #undef TX_STATUS_FAIL
1455 #undef TX_STATUS_POSTPONE
1457 #endif /* CONFIG_IWLWIFI_DEBUG */
1459 static int iwl_mvm_get_hwrate_chan_width(u32 chan_width)
1461 switch (chan_width) {
1462 case RATE_MCS_CHAN_WIDTH_20:
1464 case RATE_MCS_CHAN_WIDTH_40:
1465 return IEEE80211_TX_RC_40_MHZ_WIDTH;
1466 case RATE_MCS_CHAN_WIDTH_80:
1467 return IEEE80211_TX_RC_80_MHZ_WIDTH;
1468 case RATE_MCS_CHAN_WIDTH_160:
1469 return IEEE80211_TX_RC_160_MHZ_WIDTH;
1475 void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags,
1476 enum nl80211_band band,
1477 struct ieee80211_tx_rate *r)
1479 u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
1480 u32 rate = format == RATE_MCS_HT_MSK ?
1481 RATE_HT_MCS_INDEX(rate_n_flags) :
1482 rate_n_flags & RATE_MCS_CODE_MSK;
1485 iwl_mvm_get_hwrate_chan_width(rate_n_flags &
1486 RATE_MCS_CHAN_WIDTH_MSK);
1488 if (rate_n_flags & RATE_MCS_SGI_MSK)
1489 r->flags |= IEEE80211_TX_RC_SHORT_GI;
1490 if (format == RATE_MCS_HT_MSK) {
1491 r->flags |= IEEE80211_TX_RC_MCS;
1493 } else if (format == RATE_MCS_VHT_MSK) {
1494 ieee80211_rate_set_vht(r, rate,
1495 FIELD_GET(RATE_MCS_NSS_MSK,
1497 r->flags |= IEEE80211_TX_RC_VHT_MCS;
1498 } else if (format == RATE_MCS_HE_MSK) {
1499 /* mac80211 cannot do this without ieee80211_tx_status_ext()
1500 * but it only matters for radiotap */
1503 r->idx = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags,
1508 void iwl_mvm_hwrate_to_tx_rate_v1(u32 rate_n_flags,
1509 enum nl80211_band band,
1510 struct ieee80211_tx_rate *r)
1512 if (rate_n_flags & RATE_HT_MCS_GF_MSK)
1513 r->flags |= IEEE80211_TX_RC_GREEN_FIELD;
1516 iwl_mvm_get_hwrate_chan_width(rate_n_flags &
1517 RATE_MCS_CHAN_WIDTH_MSK_V1);
1519 if (rate_n_flags & RATE_MCS_SGI_MSK_V1)
1520 r->flags |= IEEE80211_TX_RC_SHORT_GI;
1521 if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
1522 r->flags |= IEEE80211_TX_RC_MCS;
1523 r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
1524 } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
1525 ieee80211_rate_set_vht(
1526 r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK,
1527 FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1);
1528 r->flags |= IEEE80211_TX_RC_VHT_MCS;
1530 r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
1536 * translate ucode response to mac80211 tx status control values
1538 static void iwl_mvm_hwrate_to_tx_status(const struct iwl_fw *fw,
1540 struct ieee80211_tx_info *info)
1542 struct ieee80211_tx_rate *r = &info->status.rates[0];
1544 if (iwl_fw_lookup_notif_ver(fw, LONG_GROUP,
1546 rate_n_flags = iwl_new_rate_from_v1(rate_n_flags);
1548 info->status.antenna =
1549 ((rate_n_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS);
1550 iwl_mvm_hwrate_to_tx_rate(rate_n_flags,
1554 static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm,
1555 u32 status, __le16 frame_control)
1557 struct iwl_fw_dbg_trigger_tlv *trig;
1558 struct iwl_fw_dbg_trigger_tx_status *status_trig;
1561 if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS) {
1562 enum iwl_fw_ini_time_point tp =
1563 IWL_FW_INI_TIME_POINT_TX_FAILED;
1565 if (ieee80211_is_action(frame_control))
1566 tp = IWL_FW_INI_TIME_POINT_TX_WFD_ACTION_FRAME_FAILED;
1568 iwl_dbg_tlv_time_point(&mvm->fwrt,
1573 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL,
1574 FW_DBG_TRIGGER_TX_STATUS);
1578 status_trig = (void *)trig->data;
1580 for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) {
1581 /* don't collect on status 0 */
1582 if (!status_trig->statuses[i].status)
1585 if (status_trig->statuses[i].status != (status & TX_STATUS_MSK))
1588 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1589 "Tx status %d was received",
1590 status & TX_STATUS_MSK);
1596 * iwl_mvm_get_scd_ssn - returns the SSN of the SCD
1597 * @tx_resp: the Tx response from the fw (agg or non-agg)
1599 * When the fw sends an AMPDU, it fetches the MPDUs one after the other. Since
1600 * it can't know that everything will go well until the end of the AMPDU, it
1601 * can't know in advance the number of MPDUs that will be sent in the current
1602 * batch. This is why it writes the agg Tx response while it fetches the MPDUs.
1603 * Hence, it can't know in advance what the SSN of the SCD will be at the end
1604 * of the batch. This is why the SSN of the SCD is written at the end of the
1605 * whole struct at a variable offset. This function knows how to cope with the
1606 * variable offset and returns the SSN of the SCD.
1608 * For 22000-series and lower, this is just 12 bits. For later, 16 bits.
1610 static inline u32 iwl_mvm_get_scd_ssn(struct iwl_mvm *mvm,
1611 struct iwl_tx_resp *tx_resp)
1613 u32 val = le32_to_cpup((__le32 *)iwl_mvm_get_agg_status(mvm, tx_resp) +
1614 tx_resp->frame_count);
1616 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
1617 return val & 0xFFFF;
1621 static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm,
1622 struct iwl_rx_packet *pkt)
1624 struct ieee80211_sta *sta;
1625 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1626 int txq_id = SEQ_TO_QUEUE(sequence);
1627 /* struct iwl_tx_resp_v3 is almost the same */
1628 struct iwl_tx_resp *tx_resp = (void *)pkt->data;
1629 int sta_id = IWL_TX_RES_GET_RA(tx_resp->ra_tid);
1630 int tid = IWL_TX_RES_GET_TID(tx_resp->ra_tid);
1631 struct agg_tx_status *agg_status =
1632 iwl_mvm_get_agg_status(mvm, tx_resp);
1633 u32 status = le16_to_cpu(agg_status->status);
1634 u16 ssn = iwl_mvm_get_scd_ssn(mvm, tx_resp);
1635 struct sk_buff_head skbs;
1638 u16 next_reclaimed, seq_ctl;
1639 bool is_ndp = false;
1641 __skb_queue_head_init(&skbs);
1643 if (iwl_mvm_has_new_tx_api(mvm))
1644 txq_id = le16_to_cpu(tx_resp->tx_queue);
1646 seq_ctl = le16_to_cpu(tx_resp->seq_ctl);
1648 /* we can free until ssn % q.n_bd not inclusive */
1649 iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs, false);
1651 while (!skb_queue_empty(&skbs)) {
1652 struct sk_buff *skb = __skb_dequeue(&skbs);
1653 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1654 struct ieee80211_hdr *hdr = (void *)skb->data;
1655 bool flushed = false;
1659 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1661 memset(&info->status, 0, sizeof(info->status));
1662 info->flags &= ~(IEEE80211_TX_STAT_ACK | IEEE80211_TX_STAT_TX_FILTERED);
1664 /* inform mac80211 about what happened with the frame */
1665 switch (status & TX_STATUS_MSK) {
1666 case TX_STATUS_SUCCESS:
1667 case TX_STATUS_DIRECT_DONE:
1668 info->flags |= IEEE80211_TX_STAT_ACK;
1670 case TX_STATUS_FAIL_FIFO_FLUSHED:
1671 case TX_STATUS_FAIL_DRAIN_FLOW:
1674 case TX_STATUS_FAIL_DEST_PS:
1675 /* the FW should have stopped the queue and not
1676 * return this status
1679 "FW reported TX filtered, status=0x%x, FC=0x%x\n",
1680 status, le16_to_cpu(hdr->frame_control));
1681 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
1687 if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS &&
1688 ieee80211_is_mgmt(hdr->frame_control))
1689 iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx);
1692 * If we are freeing multiple frames, mark all the frames
1693 * but the first one as acked, since they were acknowledged
1697 info->flags |= IEEE80211_TX_STAT_ACK;
1699 iwl_mvm_tx_status_check_trigger(mvm, status, hdr->frame_control);
1701 info->status.rates[0].count = tx_resp->failure_frame + 1;
1703 iwl_mvm_hwrate_to_tx_status(mvm->fw,
1704 le32_to_cpu(tx_resp->initial_rate),
1707 /* Don't assign the converted initial_rate, because driver
1708 * TLC uses this and doesn't support the new FW rate
1710 info->status.status_driver_data[1] =
1711 (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate);
1713 /* Single frame failure in an AMPDU queue => send BAR */
1714 if (info->flags & IEEE80211_TX_CTL_AMPDU &&
1715 !(info->flags & IEEE80211_TX_STAT_ACK) &&
1716 !(info->flags & IEEE80211_TX_STAT_TX_FILTERED) && !flushed)
1717 info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
1718 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1720 /* W/A FW bug: seq_ctl is wrong upon failure / BAR frame */
1721 if (ieee80211_is_back_req(hdr->frame_control))
1723 else if (status != TX_STATUS_SUCCESS)
1724 seq_ctl = le16_to_cpu(hdr->seq_ctrl);
1726 if (unlikely(!seq_ctl)) {
1728 * If it is an NDP, we can't update next_reclaim since
1729 * its sequence control is 0. Note that for that same
1730 * reason, NDPs are never sent to A-MPDU'able queues
1731 * so that we can never have more than one freed frame
1732 * for a single Tx resonse (see WARN_ON below).
1734 if (ieee80211_is_qos_nullfunc(hdr->frame_control))
1739 * TODO: this is not accurate if we are freeing more than one
1742 info->status.tx_time =
1743 le16_to_cpu(tx_resp->wireless_media_time);
1744 BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1);
1745 lq_color = TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info);
1746 info->status.status_driver_data[0] =
1747 RS_DRV_DATA_PACK(lq_color, tx_resp->reduced_tpc);
1749 if (likely(!iwl_mvm_time_sync_frame(mvm, skb, hdr->addr1)))
1750 ieee80211_tx_status_skb(mvm->hw, skb);
1753 /* This is an aggregation queue or might become one, so we use
1754 * the ssn since: ssn = wifi seq_num % 256.
1755 * The seq_ctl is the sequence control of the packet to which
1756 * this Tx response relates. But if there is a hole in the
1757 * bitmap of the BA we received, this Tx response may allow to
1758 * reclaim the hole and all the subsequent packets that were
1759 * already acked. In that case, seq_ctl != ssn, and the next
1760 * packet to be reclaimed will be ssn and not seq_ctl. In that
1761 * case, several packets will be reclaimed even if
1764 * The ssn is the index (% 256) of the latest packet that has
1765 * treated (acked / dropped) + 1.
1767 next_reclaimed = ssn;
1769 IWL_DEBUG_TX_REPLY(mvm,
1770 "TXQ %d status %s (0x%08x)\n",
1771 txq_id, iwl_mvm_get_tx_fail_reason(status), status);
1773 IWL_DEBUG_TX_REPLY(mvm,
1774 "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n",
1775 le32_to_cpu(tx_resp->initial_rate),
1776 tx_resp->failure_frame, SEQ_TO_INDEX(sequence),
1777 ssn, next_reclaimed, seq_ctl);
1781 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1783 * sta can't be NULL otherwise it'd mean that the sta has been freed in
1784 * the firmware while we still have packets for it in the Tx queues.
1786 if (WARN_ON_ONCE(!sta))
1790 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
1792 iwl_mvm_tx_airtime(mvm, mvmsta,
1793 le16_to_cpu(tx_resp->wireless_media_time));
1795 if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS &&
1796 mvmsta->sta_state < IEEE80211_STA_AUTHORIZED)
1797 iwl_mvm_toggle_tx_ant(mvm, &mvmsta->tx_ant);
1799 if (sta->wme && tid != IWL_MGMT_TID) {
1800 struct iwl_mvm_tid_data *tid_data =
1801 &mvmsta->tid_data[tid];
1802 bool send_eosp_ndp = false;
1804 spin_lock_bh(&mvmsta->lock);
1807 tid_data->next_reclaimed = next_reclaimed;
1808 IWL_DEBUG_TX_REPLY(mvm,
1809 "Next reclaimed packet:%d\n",
1811 if (tid < IWL_MAX_TID_COUNT)
1812 iwl_mvm_count_mpdu(mvmsta, sta_id, 1,
1815 IWL_DEBUG_TX_REPLY(mvm,
1816 "NDP - don't update next_reclaimed\n");
1819 iwl_mvm_check_ratid_empty(mvm, sta, tid);
1821 if (mvmsta->sleep_tx_count) {
1822 mvmsta->sleep_tx_count--;
1823 if (mvmsta->sleep_tx_count &&
1824 !iwl_mvm_tid_queued(mvm, tid_data)) {
1826 * The number of frames in the queue
1827 * dropped to 0 even if we sent less
1828 * frames than we thought we had on the
1830 * This means we had holes in the BA
1831 * window that we just filled, ask
1832 * mac80211 to send EOSP since the
1833 * firmware won't know how to do that.
1834 * Send NDP and the firmware will send
1835 * EOSP notification that will trigger
1836 * a call to ieee80211_sta_eosp().
1838 send_eosp_ndp = true;
1842 spin_unlock_bh(&mvmsta->lock);
1843 if (send_eosp_ndp) {
1844 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta,
1845 IEEE80211_FRAME_RELEASE_UAPSD,
1846 1, tid, false, false);
1847 mvmsta->sleep_tx_count = 0;
1848 ieee80211_send_eosp_nullfunc(sta, tid);
1852 if (mvmsta->next_status_eosp) {
1853 mvmsta->next_status_eosp = false;
1854 ieee80211_sta_eosp(sta);
1861 #ifdef CONFIG_IWLWIFI_DEBUG
1862 #define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x
1863 static const char *iwl_get_agg_tx_status(u16 status)
1865 switch (status & AGG_TX_STATE_STATUS_MSK) {
1866 AGG_TX_STATE_(TRANSMITTED);
1867 AGG_TX_STATE_(UNDERRUN);
1868 AGG_TX_STATE_(BT_PRIO);
1869 AGG_TX_STATE_(FEW_BYTES);
1870 AGG_TX_STATE_(ABORT);
1871 AGG_TX_STATE_(TX_ON_AIR_DROP);
1872 AGG_TX_STATE_(LAST_SENT_TRY_CNT);
1873 AGG_TX_STATE_(LAST_SENT_BT_KILL);
1874 AGG_TX_STATE_(SCD_QUERY);
1875 AGG_TX_STATE_(TEST_BAD_CRC32);
1876 AGG_TX_STATE_(RESPONSE);
1877 AGG_TX_STATE_(DUMP_TX);
1878 AGG_TX_STATE_(DELAY_TX);
1884 static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
1885 struct iwl_rx_packet *pkt)
1887 struct iwl_tx_resp *tx_resp = (void *)pkt->data;
1888 struct agg_tx_status *frame_status =
1889 iwl_mvm_get_agg_status(mvm, tx_resp);
1891 bool tirgger_timepoint = false;
1893 for (i = 0; i < tx_resp->frame_count; i++) {
1894 u16 fstatus = le16_to_cpu(frame_status[i].status);
1895 /* In case one frame wasn't transmitted trigger time point */
1896 tirgger_timepoint |= ((fstatus & AGG_TX_STATE_STATUS_MSK) !=
1897 AGG_TX_STATE_TRANSMITTED);
1898 IWL_DEBUG_TX_REPLY(mvm,
1899 "status %s (0x%04x), try-count (%d) seq (0x%x)\n",
1900 iwl_get_agg_tx_status(fstatus),
1901 fstatus & AGG_TX_STATE_STATUS_MSK,
1902 (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >>
1903 AGG_TX_STATE_TRY_CNT_POS,
1904 le16_to_cpu(frame_status[i].sequence));
1907 if (tirgger_timepoint)
1908 iwl_dbg_tlv_time_point(&mvm->fwrt,
1909 IWL_FW_INI_TIME_POINT_TX_FAILED, NULL);
1913 static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm,
1914 struct iwl_rx_packet *pkt)
1916 #endif /* CONFIG_IWLWIFI_DEBUG */
1918 static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm,
1919 struct iwl_rx_packet *pkt)
1921 struct iwl_tx_resp *tx_resp = (void *)pkt->data;
1922 int sta_id = IWL_TX_RES_GET_RA(tx_resp->ra_tid);
1923 int tid = IWL_TX_RES_GET_TID(tx_resp->ra_tid);
1924 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1925 struct iwl_mvm_sta *mvmsta;
1926 int queue = SEQ_TO_QUEUE(sequence);
1927 struct ieee80211_sta *sta;
1929 if (WARN_ON_ONCE(queue < IWL_MVM_DQA_MIN_DATA_QUEUE &&
1930 (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)))
1933 iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt);
1937 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
1939 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1940 if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta) || !sta->wme)) {
1945 if (!WARN_ON_ONCE(!mvmsta)) {
1946 mvmsta->tid_data[tid].rate_n_flags =
1947 le32_to_cpu(tx_resp->initial_rate);
1948 mvmsta->tid_data[tid].tx_time =
1949 le16_to_cpu(tx_resp->wireless_media_time);
1950 mvmsta->tid_data[tid].lq_color =
1951 TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info);
1952 iwl_mvm_tx_airtime(mvm, mvmsta,
1953 le16_to_cpu(tx_resp->wireless_media_time));
1959 void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1961 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1962 struct iwl_tx_resp *tx_resp = (void *)pkt->data;
1964 if (tx_resp->frame_count == 1)
1965 iwl_mvm_rx_tx_cmd_single(mvm, pkt);
1967 iwl_mvm_rx_tx_cmd_agg(mvm, pkt);
1970 static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid,
1972 struct ieee80211_tx_info *tx_info, u32 rate,
1975 struct sk_buff_head reclaimed_skbs;
1976 struct iwl_mvm_tid_data *tid_data = NULL;
1977 struct ieee80211_sta *sta;
1978 struct iwl_mvm_sta *mvmsta = NULL;
1979 struct sk_buff *skb;
1982 if (WARN_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations ||
1983 tid > IWL_MAX_TID_COUNT,
1984 "sta_id %d tid %d", sta_id, tid))
1989 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1991 /* Reclaiming frames for a station that has been deleted ? */
1992 if (WARN_ON_ONCE(!sta)) {
1997 __skb_queue_head_init(&reclaimed_skbs);
2000 * Release all TFDs before the SSN, i.e. all TFDs in front of
2001 * block-ack window (we assume that they've been successfully
2002 * transmitted ... if not, it's too late anyway).
2004 iwl_trans_reclaim(mvm->trans, txq, index, &reclaimed_skbs, is_flush);
2006 skb_queue_walk(&reclaimed_skbs, skb) {
2007 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2009 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
2011 memset(&info->status, 0, sizeof(info->status));
2012 /* Packet was transmitted successfully, failures come as single
2013 * frames because before failing a frame the firmware transmits
2014 * it without aggregation at least once.
2017 info->flags |= IEEE80211_TX_STAT_ACK;
2019 info->flags &= ~IEEE80211_TX_STAT_ACK;
2023 * It's possible to get a BA response after invalidating the rcu (rcu is
2024 * invalidated in order to prevent new Tx from being sent, but there may
2025 * be some frames already in-flight).
2026 * In this case we just want to reclaim, and could skip all the
2027 * sta-dependent stuff since it's in the middle of being removed
2033 mvmsta = iwl_mvm_sta_from_mac80211(sta);
2034 tid_data = &mvmsta->tid_data[tid];
2036 if (tid_data->txq_id != txq) {
2038 "invalid reclaim request: Q %d, tid %d\n",
2039 tid_data->txq_id, tid);
2044 spin_lock_bh(&mvmsta->lock);
2046 tid_data->next_reclaimed = index;
2048 iwl_mvm_check_ratid_empty(mvm, sta, tid);
2052 /* pack lq color from tid_data along the reduced txp */
2053 tx_info->status.status_driver_data[0] =
2054 RS_DRV_DATA_PACK(tid_data->lq_color,
2055 tx_info->status.status_driver_data[0]);
2056 tx_info->status.status_driver_data[1] = (void *)(uintptr_t)rate;
2058 skb_queue_walk(&reclaimed_skbs, skb) {
2059 struct ieee80211_hdr *hdr = (void *)skb->data;
2060 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2063 if (ieee80211_is_data_qos(hdr->frame_control))
2066 WARN_ON_ONCE(tid != IWL_MAX_TID_COUNT);
2069 /* this is the first skb we deliver in this batch */
2070 /* put the rate scaling data there */
2072 info->flags |= IEEE80211_TX_STAT_AMPDU;
2073 memcpy(&info->status, &tx_info->status,
2074 sizeof(tx_info->status));
2075 iwl_mvm_hwrate_to_tx_status(mvm->fw, rate, info);
2079 spin_unlock_bh(&mvmsta->lock);
2081 /* We got a BA notif with 0 acked or scd_ssn didn't progress which is
2082 * possible (i.e. first MPDU in the aggregation wasn't acked)
2083 * Still it's important to update RS about sent vs. acked.
2085 if (!is_flush && skb_queue_empty(&reclaimed_skbs) &&
2086 !iwl_mvm_has_tlc_offload(mvm)) {
2087 struct ieee80211_chanctx_conf *chanctx_conf = NULL;
2089 /* no TLC offload, so non-MLD mode */
2092 rcu_dereference(mvmsta->vif->bss_conf.chanctx_conf);
2094 if (WARN_ON_ONCE(!chanctx_conf))
2097 tx_info->band = chanctx_conf->def.chan->band;
2098 iwl_mvm_hwrate_to_tx_status(mvm->fw, rate, tx_info);
2100 IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n");
2101 iwl_mvm_rs_tx_status(mvm, sta, tid, tx_info, false);
2107 while (!skb_queue_empty(&reclaimed_skbs)) {
2108 skb = __skb_dequeue(&reclaimed_skbs);
2109 ieee80211_tx_status_skb(mvm->hw, skb);
2113 void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2115 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2116 unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
2117 int sta_id, tid, txq, index;
2118 struct ieee80211_tx_info ba_info = {};
2119 struct iwl_mvm_ba_notif *ba_notif;
2120 struct iwl_mvm_tid_data *tid_data;
2121 struct iwl_mvm_sta *mvmsta;
2123 ba_info.flags = IEEE80211_TX_STAT_AMPDU;
2125 if (iwl_mvm_has_new_tx_api(mvm)) {
2126 struct iwl_compressed_ba_notif *ba_res =
2128 u8 lq_color = TX_RES_RATE_TABLE_COL_GET(ba_res->tlc_rate_info);
2132 if (IWL_FW_CHECK(mvm, sizeof(*ba_res) > pkt_len,
2133 "short BA notification (%d)\n", pkt_len))
2136 sta_id = ba_res->sta_id;
2137 ba_info.status.ampdu_ack_len = (u8)le16_to_cpu(ba_res->done);
2138 ba_info.status.ampdu_len = (u8)le16_to_cpu(ba_res->txed);
2139 ba_info.status.tx_time =
2140 (u16)le32_to_cpu(ba_res->wireless_time);
2141 ba_info.status.status_driver_data[0] =
2142 (void *)(uintptr_t)ba_res->reduced_txp;
2144 tfd_cnt = le16_to_cpu(ba_res->tfd_cnt);
2148 if (IWL_FW_CHECK(mvm,
2149 struct_size(ba_res, tfd, tfd_cnt) > pkt_len,
2150 "short BA notification (tfds:%d, size:%d)\n",
2154 IWL_DEBUG_TX_REPLY(mvm,
2155 "BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n",
2156 sta_id, le32_to_cpu(ba_res->flags),
2157 le16_to_cpu(ba_res->txed),
2158 le16_to_cpu(ba_res->done));
2162 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
2164 * It's possible to get a BA response after invalidating the rcu
2165 * (rcu is invalidated in order to prevent new Tx from being
2166 * sent, but there may be some frames already in-flight).
2167 * In this case we just want to reclaim, and could skip all the
2168 * sta-dependent stuff since it's in the middle of being removed
2173 for (i = 0; i < tfd_cnt; i++) {
2174 struct iwl_compressed_ba_tfd *ba_tfd = &ba_res->tfd[i];
2177 if (tid == IWL_MGMT_TID)
2178 tid = IWL_MAX_TID_COUNT;
2181 mvmsta->tid_data[i].lq_color = lq_color;
2183 iwl_mvm_tx_reclaim(mvm, sta_id, tid,
2184 (int)(le16_to_cpu(ba_tfd->q_num)),
2185 le16_to_cpu(ba_tfd->tfd_index),
2187 le32_to_cpu(ba_res->tx_rate), false);
2191 iwl_mvm_tx_airtime(mvm, mvmsta,
2192 le32_to_cpu(ba_res->wireless_time));
2194 iwl_mvm_count_mpdu(mvmsta, sta_id,
2195 le16_to_cpu(ba_res->txed), true, 0);
2201 ba_notif = (void *)pkt->data;
2202 sta_id = ba_notif->sta_id;
2203 tid = ba_notif->tid;
2204 /* "flow" corresponds to Tx queue */
2205 txq = le16_to_cpu(ba_notif->scd_flow);
2206 /* "ssn" is start of block-ack Tx window, corresponds to index
2207 * (in Tx queue's circular buffer) of first TFD/frame in window */
2208 index = le16_to_cpu(ba_notif->scd_ssn);
2211 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id);
2212 if (IWL_FW_CHECK(mvm, !mvmsta,
2213 "invalid STA ID %d in BA notif\n",
2219 tid_data = &mvmsta->tid_data[tid];
2221 ba_info.status.ampdu_ack_len = ba_notif->txed_2_done;
2222 ba_info.status.ampdu_len = ba_notif->txed;
2223 ba_info.status.tx_time = tid_data->tx_time;
2224 ba_info.status.status_driver_data[0] =
2225 (void *)(uintptr_t)ba_notif->reduced_txp;
2229 IWL_DEBUG_TX_REPLY(mvm,
2230 "BA_NOTIFICATION Received from %pM, sta_id = %d\n",
2231 ba_notif->sta_addr, ba_notif->sta_id);
2233 IWL_DEBUG_TX_REPLY(mvm,
2234 "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n",
2235 ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl),
2236 le64_to_cpu(ba_notif->bitmap), txq, index,
2237 ba_notif->txed, ba_notif->txed_2_done);
2239 IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n",
2240 ba_notif->reduced_txp);
2242 iwl_mvm_tx_reclaim(mvm, sta_id, tid, txq, index, &ba_info,
2243 tid_data->rate_n_flags, false);
2247 * Note that there are transports that buffer frames before they reach
2248 * the firmware. This means that after flush_tx_path is called, the
2249 * queue might not be empty. The race-free way to handle this is to:
2250 * 1) set the station as draining
2251 * 2) flush the Tx path
2252 * 3) wait for the transport queues to be empty
2254 int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk)
2257 struct iwl_tx_path_flush_cmd_v1 flush_cmd = {
2258 .queues_ctl = cpu_to_le32(tfd_msk),
2259 .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH),
2262 WARN_ON(iwl_mvm_has_new_tx_api(mvm));
2263 ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, 0,
2264 sizeof(flush_cmd), &flush_cmd);
2266 IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret);
2270 int iwl_mvm_flush_sta_tids(struct iwl_mvm *mvm, u32 sta_id, u16 tids)
2273 struct iwl_tx_path_flush_cmd_rsp *rsp;
2274 struct iwl_tx_path_flush_cmd flush_cmd = {
2275 .sta_id = cpu_to_le32(sta_id),
2276 .tid_mask = cpu_to_le16(tids),
2279 struct iwl_host_cmd cmd = {
2281 .len = { sizeof(flush_cmd), },
2282 .data = { &flush_cmd, },
2285 WARN_ON(!iwl_mvm_has_new_tx_api(mvm));
2287 if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TXPATH_FLUSH, 0) > 0)
2288 cmd.flags |= CMD_WANT_SKB | CMD_SEND_IN_RFKILL;
2290 IWL_DEBUG_TX_QUEUES(mvm, "flush for sta id %d tid mask 0x%x\n",
2293 ret = iwl_mvm_send_cmd(mvm, &cmd);
2296 IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret);
2300 if (cmd.flags & CMD_WANT_SKB) {
2302 int num_flushed_queues;
2304 if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != sizeof(*rsp))) {
2309 rsp = (void *)cmd.resp_pkt->data;
2311 if (WARN_ONCE(le16_to_cpu(rsp->sta_id) != sta_id,
2312 "sta_id %d != rsp_sta_id %d",
2313 sta_id, le16_to_cpu(rsp->sta_id))) {
2318 num_flushed_queues = le16_to_cpu(rsp->num_flushed_queues);
2319 if (WARN_ONCE(num_flushed_queues > IWL_TX_FLUSH_QUEUE_RSP,
2320 "num_flushed_queues %d", num_flushed_queues)) {
2325 for (i = 0; i < num_flushed_queues; i++) {
2326 struct ieee80211_tx_info tx_info = {};
2327 struct iwl_flush_queue_info *queue_info = &rsp->queues[i];
2328 int tid = le16_to_cpu(queue_info->tid);
2329 int read_before = le16_to_cpu(queue_info->read_before_flush);
2330 int read_after = le16_to_cpu(queue_info->read_after_flush);
2331 int queue_num = le16_to_cpu(queue_info->queue_num);
2333 if (tid == IWL_MGMT_TID)
2334 tid = IWL_MAX_TID_COUNT;
2336 IWL_DEBUG_TX_QUEUES(mvm,
2337 "tid %d queue_id %d read-before %d read-after %d\n",
2338 tid, queue_num, read_before, read_after);
2340 iwl_mvm_tx_reclaim(mvm, sta_id, tid, queue_num, read_after,
2344 iwl_free_resp(&cmd);
2349 int iwl_mvm_flush_sta(struct iwl_mvm *mvm, u32 sta_id, u32 tfd_queue_mask)
2351 if (iwl_mvm_has_new_tx_api(mvm))
2352 return iwl_mvm_flush_sta_tids(mvm, sta_id, 0xffff);
2354 return iwl_mvm_flush_tx_path(mvm, tfd_queue_mask);