Commit | Line | Data |
---|---|---|
8e99ea8d JB |
1 | // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
2 | /* | |
6d19a5eb | 3 | * Copyright (C) 2012-2014, 2018-2021 Intel Corporation |
8e99ea8d JB |
4 | * Copyright (C) 2013-2015 Intel Mobile Communications GmbH |
5 | * Copyright (C) 2016-2017 Intel Deutschland GmbH | |
6 | */ | |
8ca151b5 JB |
7 | #include <linux/ieee80211.h> |
8 | #include <linux/etherdevice.h> | |
a3713f8b | 9 | #include <linux/tcp.h> |
a6d5e32f | 10 | #include <net/ip.h> |
5e6a98dc | 11 | #include <net/ipv6.h> |
8ca151b5 JB |
12 | |
13 | #include "iwl-trans.h" | |
14 | #include "iwl-eeprom-parse.h" | |
15 | #include "mvm.h" | |
16 | #include "sta.h" | |
17 | ||
4203263d EG |
18 | static void |
19 | iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr, | |
20 | u16 tid, u16 ssn) | |
21 | { | |
22 | struct iwl_fw_dbg_trigger_tlv *trig; | |
23 | struct iwl_fw_dbg_trigger_ba *ba_trig; | |
24 | ||
6c042d75 SS |
25 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_BA); |
26 | if (!trig) | |
4203263d EG |
27 | return; |
28 | ||
4203263d EG |
29 | ba_trig = (void *)trig->data; |
30 | ||
4203263d EG |
31 | if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid))) |
32 | return; | |
33 | ||
7174beb6 JB |
34 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
35 | "BAR sent to %pM, tid %d, ssn %d", | |
36 | addr, tid, ssn); | |
4203263d EG |
37 | } |
38 | ||
5e6a98dc SS |
39 | #define OPT_HDR(type, skb, off) \ |
40 | (type *)(skb_network_header(skb) + (off)) | |
41 | ||
0792df68 JB |
42 | static u16 iwl_mvm_tx_csum_pre_bz(struct iwl_mvm *mvm, struct sk_buff *skb, |
43 | struct ieee80211_tx_info *info, bool amsdu) | |
5e6a98dc | 44 | { |
0792df68 | 45 | struct ieee80211_hdr *hdr = (void *)skb->data; |
fbdacb30 | 46 | u16 offload_assist = 0; |
5e6a98dc SS |
47 | #if IS_ENABLED(CONFIG_INET) |
48 | u16 mh_len = ieee80211_hdrlen(hdr->frame_control); | |
5e6a98dc SS |
49 | u8 protocol = 0; |
50 | ||
59fa61f3 EG |
51 | /* Do not compute checksum if already computed */ |
52 | if (skb->ip_summed != CHECKSUM_PARTIAL) | |
b86dd74f | 53 | goto out; |
5e6a98dc SS |
54 | |
55 | /* We do not expect to be requested to csum stuff we do not support */ | |
56 | if (WARN_ONCE(!(mvm->hw->netdev_features & IWL_TX_CSUM_NETIF_FLAGS) || | |
57 | (skb->protocol != htons(ETH_P_IP) && | |
58 | skb->protocol != htons(ETH_P_IPV6)), | |
59 | "No support for requested checksum\n")) { | |
60 | skb_checksum_help(skb); | |
b86dd74f | 61 | goto out; |
5e6a98dc SS |
62 | } |
63 | ||
64 | if (skb->protocol == htons(ETH_P_IP)) { | |
65 | protocol = ip_hdr(skb)->protocol; | |
66 | } else { | |
67 | #if IS_ENABLED(CONFIG_IPV6) | |
68 | struct ipv6hdr *ipv6h = | |
69 | (struct ipv6hdr *)skb_network_header(skb); | |
70 | unsigned int off = sizeof(*ipv6h); | |
71 | ||
72 | protocol = ipv6h->nexthdr; | |
73 | while (protocol != NEXTHDR_NONE && ipv6_ext_hdr(protocol)) { | |
ecf51424 SS |
74 | struct ipv6_opt_hdr *hp; |
75 | ||
5e6a98dc SS |
76 | /* only supported extension headers */ |
77 | if (protocol != NEXTHDR_ROUTING && | |
78 | protocol != NEXTHDR_HOP && | |
ecf51424 | 79 | protocol != NEXTHDR_DEST) { |
5e6a98dc | 80 | skb_checksum_help(skb); |
b86dd74f | 81 | goto out; |
5e6a98dc SS |
82 | } |
83 | ||
ecf51424 SS |
84 | hp = OPT_HDR(struct ipv6_opt_hdr, skb, off); |
85 | protocol = hp->nexthdr; | |
86 | off += ipv6_optlen(hp); | |
5e6a98dc SS |
87 | } |
88 | /* if we get here - protocol now should be TCP/UDP */ | |
89 | #endif | |
90 | } | |
91 | ||
92 | if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) { | |
93 | WARN_ON_ONCE(1); | |
94 | skb_checksum_help(skb); | |
b86dd74f | 95 | goto out; |
5e6a98dc SS |
96 | } |
97 | ||
98 | /* enable L4 csum */ | |
99 | offload_assist |= BIT(TX_CMD_OFFLD_L4_EN); | |
100 | ||
101 | /* | |
102 | * Set offset to IP header (snap). | |
103 | * We don't support tunneling so no need to take care of inner header. | |
104 | * Size is in words. | |
105 | */ | |
106 | offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR); | |
107 | ||
108 | /* Do IPv4 csum for AMSDU only (no IP csum for Ipv6) */ | |
fbdacb30 | 109 | if (skb->protocol == htons(ETH_P_IP) && amsdu) { |
5e6a98dc SS |
110 | ip_hdr(skb)->check = 0; |
111 | offload_assist |= BIT(TX_CMD_OFFLD_L3_EN); | |
112 | } | |
113 | ||
114 | /* reset UDP/TCP header csum */ | |
115 | if (protocol == IPPROTO_TCP) | |
116 | tcp_hdr(skb)->check = 0; | |
117 | else | |
118 | udp_hdr(skb)->check = 0; | |
119 | ||
3f25bb4b EG |
120 | /* |
121 | * mac header len should include IV, size is in words unless | |
122 | * the IV is added by the firmware like in WEP. | |
123 | * In new Tx API, the IV is always added by the firmware. | |
124 | */ | |
125 | if (!iwl_mvm_has_new_tx_api(mvm) && info->control.hw_key && | |
126 | info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP40 && | |
127 | info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP104) | |
5e6a98dc SS |
128 | mh_len += info->control.hw_key->iv_len; |
129 | mh_len /= 2; | |
130 | offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE; | |
131 | ||
b86dd74f | 132 | out: |
5e6a98dc | 133 | #endif |
fbdacb30 JB |
134 | if (amsdu) |
135 | offload_assist |= BIT(TX_CMD_OFFLD_AMSDU); | |
136 | else if (ieee80211_hdrlen(hdr->frame_control) % 4) | |
137 | /* padding is inserted later in transport */ | |
138 | offload_assist |= BIT(TX_CMD_OFFLD_PAD); | |
139 | ||
b86dd74f | 140 | return offload_assist; |
5e6a98dc SS |
141 | } |
142 | ||
0792df68 JB |
143 | u32 iwl_mvm_tx_csum_bz(struct iwl_mvm *mvm, struct sk_buff *skb, bool amsdu) |
144 | { | |
145 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
146 | u32 offload_assist = IWL_TX_CMD_OFFLD_BZ_PARTIAL_CSUM; | |
147 | unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
148 | unsigned int csum_start = skb_checksum_start_offset(skb); | |
149 | ||
150 | offload_assist |= u32_encode_bits(hdrlen / 2, | |
151 | IWL_TX_CMD_OFFLD_BZ_MH_LEN); | |
152 | if (amsdu) | |
153 | offload_assist |= IWL_TX_CMD_OFFLD_BZ_AMSDU; | |
154 | else if (hdrlen % 4) | |
155 | /* padding is inserted later in transport */ | |
156 | offload_assist |= IWL_TX_CMD_OFFLD_BZ_MH_PAD; | |
157 | ||
158 | if (skb->ip_summed != CHECKSUM_PARTIAL) | |
159 | return offload_assist; | |
160 | ||
161 | offload_assist |= IWL_TX_CMD_OFFLD_BZ_ENABLE_CSUM | | |
162 | IWL_TX_CMD_OFFLD_BZ_ZERO2ONES; | |
163 | ||
164 | /* | |
165 | * mac80211 will always calculate checksum in software for | |
166 | * non-fast-xmit, and so we can only do offloaded checksum | |
167 | * for fast-xmit frames. In this case, we always have the | |
168 | * RFC 1042 header present. skb_checksum_start_offset() | |
169 | * returns the offset from the beginning, but the hardware | |
170 | * needs it from after the header & SNAP header. | |
171 | */ | |
172 | csum_start -= hdrlen + 8; | |
173 | ||
174 | offload_assist |= u32_encode_bits(csum_start, | |
175 | IWL_TX_CMD_OFFLD_BZ_START_OFFS); | |
176 | offload_assist |= u32_encode_bits(csum_start + skb->csum_offset, | |
177 | IWL_TX_CMD_OFFLD_BZ_RESULT_OFFS); | |
178 | ||
179 | return offload_assist; | |
180 | } | |
181 | ||
182 | static u32 iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb, | |
183 | struct ieee80211_tx_info *info, | |
184 | bool amsdu) | |
185 | { | |
186 | if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ) | |
187 | return iwl_mvm_tx_csum_pre_bz(mvm, skb, info, amsdu); | |
188 | return iwl_mvm_tx_csum_bz(mvm, skb, amsdu); | |
189 | } | |
190 | ||
8ca151b5 JB |
191 | /* |
192 | * Sets most of the Tx cmd's fields | |
193 | */ | |
6ce73e65 AN |
194 | void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, |
195 | struct iwl_tx_cmd *tx_cmd, | |
196 | struct ieee80211_tx_info *info, u8 sta_id) | |
8ca151b5 JB |
197 | { |
198 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
199 | __le16 fc = hdr->frame_control; | |
200 | u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags); | |
201 | u32 len = skb->len + FCS_LEN; | |
fbdacb30 | 202 | bool amsdu = false; |
b797e3fb | 203 | u8 ac; |
8ca151b5 | 204 | |
8c739d8d IP |
205 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) || |
206 | (ieee80211_is_probe_resp(fc) && | |
207 | !is_multicast_ether_addr(hdr->addr1))) | |
8ca151b5 JB |
208 | tx_flags |= TX_CMD_FLG_ACK; |
209 | else | |
210 | tx_flags &= ~TX_CMD_FLG_ACK; | |
211 | ||
212 | if (ieee80211_is_probe_resp(fc)) | |
213 | tx_flags |= TX_CMD_FLG_TSF; | |
8ca151b5 | 214 | |
8ca151b5 JB |
215 | if (ieee80211_has_morefrags(fc)) |
216 | tx_flags |= TX_CMD_FLG_MORE_FRAG; | |
217 | ||
218 | if (ieee80211_is_data_qos(fc)) { | |
219 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
220 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
221 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
fbdacb30 | 222 | amsdu = *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
9b3b43d8 ES |
223 | } else if (ieee80211_is_back_req(fc)) { |
224 | struct ieee80211_bar *bar = (void *)skb->data; | |
225 | u16 control = le16_to_cpu(bar->control); | |
4203263d | 226 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
9b3b43d8 ES |
227 | |
228 | tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR; | |
229 | tx_cmd->tid_tspec = (control & | |
230 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> | |
231 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
232 | WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT); | |
4203263d EG |
233 | iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec, |
234 | ssn); | |
8ca151b5 | 235 | } else { |
2210f695 AS |
236 | if (ieee80211_is_data(fc)) |
237 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; | |
238 | else | |
239 | tx_cmd->tid_tspec = IWL_MAX_TID_COUNT; | |
240 | ||
8ca151b5 JB |
241 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
242 | tx_flags |= TX_CMD_FLG_SEQ_CTL; | |
243 | else | |
244 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
245 | } | |
246 | ||
2210f695 | 247 | /* Default to 0 (BE) when tid_spec is set to IWL_MAX_TID_COUNT */ |
a9dc5060 ES |
248 | if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT) |
249 | ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; | |
250 | else | |
251 | ac = tid_to_mac80211_ac[0]; | |
252 | ||
b797e3fb EG |
253 | tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) << |
254 | TX_CMD_FLG_BT_PRIO_POS; | |
255 | ||
8ca151b5 JB |
256 | if (ieee80211_is_mgmt(fc)) { |
257 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
b084a356 AA |
258 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC); |
259 | else if (ieee80211_is_action(fc)) | |
260 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); | |
8ca151b5 | 261 | else |
b084a356 | 262 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 JB |
263 | |
264 | /* The spec allows Action frames in A-MPDU, we don't support | |
265 | * it | |
266 | */ | |
267 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU); | |
63f7535d | 268 | } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) { |
b084a356 | 269 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 | 270 | } else { |
b084a356 | 271 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); |
8ca151b5 JB |
272 | } |
273 | ||
8ca151b5 | 274 | if (ieee80211_is_data(fc) && len > mvm->rts_threshold && |
a371bb64 | 275 | !is_multicast_ether_addr(hdr->addr1)) |
8ca151b5 JB |
276 | tx_flags |= TX_CMD_FLG_PROT_REQUIRE; |
277 | ||
859d914c JB |
278 | if (fw_has_capa(&mvm->fw->ucode_capa, |
279 | IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) && | |
f1daa00e AO |
280 | ieee80211_action_contains_tpc(skb)) |
281 | tx_flags |= TX_CMD_FLG_WRITE_TX_POWER; | |
282 | ||
8ca151b5 | 283 | tx_cmd->tx_flags = cpu_to_le32(tx_flags); |
05e5a7e5 JB |
284 | /* Total # bytes to be transmitted - PCIe code will adjust for A-MSDU */ |
285 | tx_cmd->len = cpu_to_le16((u16)skb->len); | |
8ca151b5 JB |
286 | tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); |
287 | tx_cmd->sta_id = sta_id; | |
d8fe4844 | 288 | |
fbdacb30 | 289 | tx_cmd->offload_assist = |
0792df68 | 290 | cpu_to_le16(iwl_mvm_tx_csum_pre_bz(mvm, skb, info, amsdu)); |
8ca151b5 JB |
291 | } |
292 | ||
0dde2440 AS |
293 | static u32 iwl_mvm_get_tx_ant(struct iwl_mvm *mvm, |
294 | struct ieee80211_tx_info *info, | |
295 | struct ieee80211_sta *sta, __le16 fc) | |
296 | { | |
297 | if (info->band == NL80211_BAND_2GHZ && | |
298 | !iwl_mvm_bt_coex_is_shared_ant_avail(mvm)) | |
299 | return mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS; | |
300 | ||
301 | if (sta && ieee80211_is_data(fc)) { | |
302 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
303 | ||
304 | return BIT(mvmsta->tx_ant) << RATE_MCS_ANT_POS; | |
305 | } | |
306 | ||
307 | return BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; | |
308 | } | |
309 | ||
5ec295db SS |
310 | static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm, |
311 | struct ieee80211_tx_info *info, | |
6761a718 | 312 | struct ieee80211_sta *sta, __le16 fc) |
5ec295db | 313 | { |
004272bc | 314 | int rate_idx = -1; |
5ec295db | 315 | u8 rate_plcp; |
0dde2440 | 316 | u32 rate_flags = 0; |
d35d95ce | 317 | bool is_cck; |
5ec295db | 318 | |
004272bc MG |
319 | /* info->control is only relevant for non HW rate control */ |
320 | if (!ieee80211_hw_check(mvm->hw, HAS_RATE_CONTROL)) { | |
d599f714 JB |
321 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
322 | ||
004272bc MG |
323 | /* HT rate doesn't make sense for a non data frame */ |
324 | WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS && | |
325 | !ieee80211_is_data(fc), | |
326 | "Got a HT rate (flags:0x%x/mcs:%d/fc:0x%x/state:%d) for a non data frame\n", | |
327 | info->control.rates[0].flags, | |
328 | info->control.rates[0].idx, | |
d599f714 | 329 | le16_to_cpu(fc), sta ? mvmsta->sta_state : -1); |
004272bc MG |
330 | |
331 | rate_idx = info->control.rates[0].idx; | |
332 | } | |
5ec295db | 333 | |
5ec295db SS |
334 | /* if the rate isn't a well known legacy rate, take the lowest one */ |
335 | if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY) | |
336 | rate_idx = rate_lowest_index( | |
337 | &mvm->nvm_data->bands[info->band], sta); | |
338 | ||
d558b7f8 TM |
339 | /* |
340 | * For non 2 GHZ band, remap mac80211 rate | |
341 | * indices into driver indices | |
342 | */ | |
343 | if (info->band != NL80211_BAND_2GHZ) | |
5ec295db SS |
344 | rate_idx += IWL_FIRST_OFDM_RATE; |
345 | ||
346 | /* For 2.4 GHZ band, check that there is no need to remap */ | |
347 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
348 | ||
349 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
d35d95ce MK |
350 | rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(mvm->fw, rate_idx); |
351 | is_cck = (rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE); | |
5ec295db | 352 | |
d35d95ce MK |
353 | /* Set CCK or OFDM flag */ |
354 | if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP, TX_CMD, 0) > 8) { | |
355 | if (!is_cck) | |
356 | rate_flags |= RATE_MCS_LEGACY_OFDM_MSK; | |
357 | else | |
358 | rate_flags |= RATE_MCS_CCK_MSK; | |
359 | } else if (is_cck) { | |
48c6ebc1 | 360 | rate_flags |= RATE_MCS_CCK_MSK_V1; |
d35d95ce | 361 | } |
5ec295db SS |
362 | |
363 | return (u32)rate_plcp | rate_flags; | |
364 | } | |
365 | ||
0dde2440 AS |
366 | static u32 iwl_mvm_get_tx_rate_n_flags(struct iwl_mvm *mvm, |
367 | struct ieee80211_tx_info *info, | |
368 | struct ieee80211_sta *sta, __le16 fc) | |
369 | { | |
6761a718 | 370 | return iwl_mvm_get_tx_rate(mvm, info, sta, fc) | |
0dde2440 AS |
371 | iwl_mvm_get_tx_ant(mvm, info, sta, fc); |
372 | } | |
373 | ||
8ca151b5 JB |
374 | /* |
375 | * Sets the fields in the Tx cmd that are rate related | |
376 | */ | |
6ce73e65 AN |
377 | void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd, |
378 | struct ieee80211_tx_info *info, | |
379 | struct ieee80211_sta *sta, __le16 fc) | |
8ca151b5 | 380 | { |
8ca151b5 JB |
381 | /* Set retry limit on RTS packets */ |
382 | tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT; | |
383 | ||
384 | /* Set retry limit on DATA packets and Probe Responses*/ | |
385 | if (ieee80211_is_probe_resp(fc)) { | |
386 | tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT; | |
387 | tx_cmd->rts_retry_limit = | |
388 | min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit); | |
389 | } else if (ieee80211_is_back_req(fc)) { | |
390 | tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT; | |
391 | } else { | |
392 | tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
393 | } | |
394 | ||
395 | /* | |
e89044d7 | 396 | * for data packets, rate info comes from the table inside the fw. This |
1ffde699 | 397 | * table is controlled by LINK_QUALITY commands |
8ca151b5 JB |
398 | */ |
399 | ||
1ffde699 | 400 | if (ieee80211_is_data(fc) && sta) { |
0dde2440 AS |
401 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
402 | ||
403 | if (mvmsta->sta_state >= IEEE80211_STA_AUTHORIZED) { | |
404 | tx_cmd->initial_rate_index = 0; | |
405 | tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); | |
406 | return; | |
407 | } | |
8ca151b5 | 408 | } else if (ieee80211_is_back_req(fc)) { |
2edc6ec6 EG |
409 | tx_cmd->tx_flags |= |
410 | cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); | |
8ca151b5 JB |
411 | } |
412 | ||
8ca151b5 | 413 | /* Set the rate in the TX cmd */ |
0dde2440 AS |
414 | tx_cmd->rate_n_flags = |
415 | cpu_to_le32(iwl_mvm_get_tx_rate_n_flags(mvm, info, sta, fc)); | |
8ca151b5 JB |
416 | } |
417 | ||
2a53d166 AB |
418 | static inline void iwl_mvm_set_tx_cmd_pn(struct ieee80211_tx_info *info, |
419 | u8 *crypto_hdr) | |
420 | { | |
421 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
422 | u64 pn; | |
423 | ||
424 | pn = atomic64_inc_return(&keyconf->tx_pn); | |
425 | crypto_hdr[0] = pn; | |
426 | crypto_hdr[2] = 0; | |
427 | crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6); | |
428 | crypto_hdr[1] = pn >> 8; | |
429 | crypto_hdr[4] = pn >> 16; | |
430 | crypto_hdr[5] = pn >> 24; | |
431 | crypto_hdr[6] = pn >> 32; | |
432 | crypto_hdr[7] = pn >> 40; | |
433 | } | |
434 | ||
8ca151b5 JB |
435 | /* |
436 | * Sets the fields in the Tx cmd that are crypto related | |
437 | */ | |
ca8c0f4b JB |
438 | static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm, |
439 | struct ieee80211_tx_info *info, | |
440 | struct iwl_tx_cmd *tx_cmd, | |
441 | struct sk_buff *skb_frag, | |
442 | int hdrlen) | |
8ca151b5 JB |
443 | { |
444 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
ca8c0f4b | 445 | u8 *crypto_hdr = skb_frag->data + hdrlen; |
de04d4fb | 446 | enum iwl_tx_cmd_sec_ctrl type = TX_CMD_SEC_CCM; |
ca8c0f4b | 447 | u64 pn; |
8ca151b5 JB |
448 | |
449 | switch (keyconf->cipher) { | |
450 | case WLAN_CIPHER_SUITE_CCMP: | |
ca8c0f4b | 451 | iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd); |
2a53d166 | 452 | iwl_mvm_set_tx_cmd_pn(info, crypto_hdr); |
8ca151b5 JB |
453 | break; |
454 | ||
455 | case WLAN_CIPHER_SUITE_TKIP: | |
456 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; | |
1ad4f639 EP |
457 | pn = atomic64_inc_return(&keyconf->tx_pn); |
458 | ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn); | |
8ca151b5 JB |
459 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
460 | break; | |
461 | ||
462 | case WLAN_CIPHER_SUITE_WEP104: | |
463 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
5a2abdca | 464 | fallthrough; |
8ca151b5 JB |
465 | case WLAN_CIPHER_SUITE_WEP40: |
466 | tx_cmd->sec_ctl |= TX_CMD_SEC_WEP | | |
467 | ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) & | |
468 | TX_CMD_SEC_WEP_KEY_IDX_MSK); | |
469 | ||
470 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); | |
471 | break; | |
2a53d166 AB |
472 | case WLAN_CIPHER_SUITE_GCMP: |
473 | case WLAN_CIPHER_SUITE_GCMP_256: | |
de04d4fb | 474 | type = TX_CMD_SEC_GCMP; |
5a2abdca | 475 | fallthrough; |
de04d4fb | 476 | case WLAN_CIPHER_SUITE_CCMP_256: |
2a53d166 AB |
477 | /* TODO: Taking the key from the table might introduce a race |
478 | * when PTK rekeying is done, having an old packets with a PN | |
479 | * based on the old key but the message encrypted with a new | |
480 | * one. | |
481 | * Need to handle this. | |
482 | */ | |
de04d4fb | 483 | tx_cmd->sec_ctl |= type | TX_CMD_SEC_KEY_FROM_TABLE; |
2a53d166 AB |
484 | tx_cmd->key[0] = keyconf->hw_key_idx; |
485 | iwl_mvm_set_tx_cmd_pn(info, crypto_hdr); | |
486 | break; | |
8ca151b5 | 487 | default: |
e36e5433 | 488 | tx_cmd->sec_ctl |= TX_CMD_SEC_EXT; |
8ca151b5 JB |
489 | } |
490 | } | |
491 | ||
492 | /* | |
493 | * Allocates and sets the Tx cmd the driver data pointers in the skb | |
494 | */ | |
a89c72ff | 495 | static struct iwl_device_tx_cmd * |
8ca151b5 | 496 | iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, |
5c08b0f5 EG |
497 | struct ieee80211_tx_info *info, int hdrlen, |
498 | struct ieee80211_sta *sta, u8 sta_id) | |
8ca151b5 JB |
499 | { |
500 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
a89c72ff | 501 | struct iwl_device_tx_cmd *dev_cmd; |
8ca151b5 JB |
502 | struct iwl_tx_cmd *tx_cmd; |
503 | ||
504 | dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans); | |
505 | ||
506 | if (unlikely(!dev_cmd)) | |
507 | return NULL; | |
508 | ||
3961a61a | 509 | dev_cmd->hdr.cmd = TX_CMD; |
c47de665 SS |
510 | |
511 | if (iwl_mvm_has_new_tx_api(mvm)) { | |
a0ec0169 GBA |
512 | u32 rate_n_flags = 0; |
513 | u16 flags = 0; | |
0dde2440 AS |
514 | struct iwl_mvm_sta *mvmsta = sta ? |
515 | iwl_mvm_sta_from_mac80211(sta) : NULL; | |
fbdacb30 | 516 | bool amsdu = false; |
c47de665 | 517 | |
f5bd90b7 SS |
518 | if (ieee80211_is_data_qos(hdr->frame_control)) { |
519 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
520 | ||
fbdacb30 | 521 | amsdu = *qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
f5bd90b7 SS |
522 | } |
523 | ||
a0ec0169 GBA |
524 | if (!info->control.hw_key) |
525 | flags |= IWL_TX_FLAGS_ENCRYPT_DIS; | |
c47de665 | 526 | |
0dde2440 AS |
527 | /* |
528 | * For data packets rate info comes from the fw. Only | |
055b22e7 IP |
529 | * set rate/antenna during connection establishment or in case |
530 | * no station is given. | |
0dde2440 | 531 | */ |
055b22e7 IP |
532 | if (!sta || !ieee80211_is_data(hdr->frame_control) || |
533 | mvmsta->sta_state < IEEE80211_STA_AUTHORIZED) { | |
a0ec0169 | 534 | flags |= IWL_TX_FLAGS_CMD_RATE; |
0dde2440 AS |
535 | rate_n_flags = |
536 | iwl_mvm_get_tx_rate_n_flags(mvm, info, sta, | |
537 | hdr->frame_control); | |
a0ec0169 | 538 | } |
c47de665 | 539 | |
286ca8eb | 540 | if (mvm->trans->trans_cfg->device_family >= |
3681021f | 541 | IWL_DEVICE_FAMILY_AX210) { |
a0ec0169 | 542 | struct iwl_tx_cmd_gen3 *cmd = (void *)dev_cmd->payload; |
0792df68 JB |
543 | u32 offload_assist = iwl_mvm_tx_csum(mvm, skb, |
544 | info, amsdu); | |
c47de665 | 545 | |
fbdacb30 | 546 | cmd->offload_assist = cpu_to_le32(offload_assist); |
c47de665 | 547 | |
a0ec0169 GBA |
548 | /* Total # bytes to be transmitted */ |
549 | cmd->len = cpu_to_le16((u16)skb->len); | |
c47de665 | 550 | |
a0ec0169 GBA |
551 | /* Copy MAC header from skb into command buffer */ |
552 | memcpy(cmd->hdr, hdr, hdrlen); | |
c47de665 | 553 | |
a0ec0169 GBA |
554 | cmd->flags = cpu_to_le16(flags); |
555 | cmd->rate_n_flags = cpu_to_le32(rate_n_flags); | |
556 | } else { | |
557 | struct iwl_tx_cmd_gen2 *cmd = (void *)dev_cmd->payload; | |
0792df68 JB |
558 | u16 offload_assist = iwl_mvm_tx_csum_pre_bz(mvm, skb, |
559 | info, | |
560 | amsdu); | |
a0ec0169 | 561 | |
fbdacb30 | 562 | cmd->offload_assist = cpu_to_le16(offload_assist); |
a0ec0169 GBA |
563 | |
564 | /* Total # bytes to be transmitted */ | |
565 | cmd->len = cpu_to_le16((u16)skb->len); | |
566 | ||
567 | /* Copy MAC header from skb into command buffer */ | |
568 | memcpy(cmd->hdr, hdr, hdrlen); | |
569 | ||
570 | cmd->flags = cpu_to_le32(flags); | |
571 | cmd->rate_n_flags = cpu_to_le32(rate_n_flags); | |
572 | } | |
c47de665 SS |
573 | goto out; |
574 | } | |
575 | ||
8ca151b5 JB |
576 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; |
577 | ||
578 | if (info->control.hw_key) | |
ca8c0f4b | 579 | iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen); |
8ca151b5 JB |
580 | |
581 | iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id); | |
582 | ||
583 | iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control); | |
584 | ||
c47de665 SS |
585 | /* Copy MAC header from skb into command buffer */ |
586 | memcpy(tx_cmd->hdr, hdr, hdrlen); | |
587 | ||
588 | out: | |
bd05a5bd JB |
589 | return dev_cmd; |
590 | } | |
591 | ||
592 | static void iwl_mvm_skb_prepare_status(struct sk_buff *skb, | |
a89c72ff | 593 | struct iwl_device_tx_cmd *cmd) |
bd05a5bd JB |
594 | { |
595 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); | |
596 | ||
5c08b0f5 EG |
597 | memset(&skb_info->status, 0, sizeof(skb_info->status)); |
598 | memset(skb_info->driver_data, 0, sizeof(skb_info->driver_data)); | |
8ca151b5 | 599 | |
bd05a5bd | 600 | skb_info->driver_data[1] = cmd; |
8ca151b5 JB |
601 | } |
602 | ||
de24f638 | 603 | static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm, |
cfbc6c4c SS |
604 | struct ieee80211_tx_info *info, |
605 | struct ieee80211_hdr *hdr) | |
de24f638 | 606 | { |
cfbc6c4c SS |
607 | struct iwl_mvm_vif *mvmvif = |
608 | iwl_mvm_vif_from_mac80211(info->control.vif); | |
609 | __le16 fc = hdr->frame_control; | |
b0129db4 | 610 | |
3ee0f0e2 SS |
611 | switch (info->control.vif->type) { |
612 | case NL80211_IFTYPE_AP: | |
4d339989 | 613 | case NL80211_IFTYPE_ADHOC: |
3ee0f0e2 | 614 | /* |
0fe8bed6 AS |
615 | * Non-bufferable frames use the broadcast station, thus they |
616 | * use the probe queue. | |
e6835942 JB |
617 | * Also take care of the case where we send a deauth to a |
618 | * station that we don't have, or similarly an association | |
619 | * response (with non-success status) for a station we can't | |
620 | * accept. | |
51da3d8b JB |
621 | * Also, disassociate frames might happen, particular with |
622 | * reason 7 ("Class 3 frame received from nonassociated STA"). | |
3ee0f0e2 | 623 | */ |
0fe8bed6 AS |
624 | if (ieee80211_is_mgmt(fc) && |
625 | (!ieee80211_is_bufferable_mmpdu(fc) || | |
626 | ieee80211_is_deauth(fc) || ieee80211_is_disassoc(fc))) | |
49f71713 | 627 | return mvm->probe_queue; |
cfbc6c4c SS |
628 | |
629 | if (!ieee80211_has_order(fc) && !ieee80211_is_probe_req(fc) && | |
630 | is_multicast_ether_addr(hdr->addr1)) | |
b0129db4 | 631 | return mvmvif->cab_queue; |
3ee0f0e2 | 632 | |
4d339989 LK |
633 | WARN_ONCE(info->control.vif->type != NL80211_IFTYPE_ADHOC, |
634 | "fc=0x%02x", le16_to_cpu(fc)); | |
49f71713 | 635 | return mvm->probe_queue; |
3ee0f0e2 SS |
636 | case NL80211_IFTYPE_P2P_DEVICE: |
637 | if (ieee80211_is_mgmt(fc)) | |
49f71713 | 638 | return mvm->p2p_dev_queue; |
de24f638 | 639 | |
3ee0f0e2 | 640 | WARN_ON_ONCE(1); |
49f71713 | 641 | return mvm->p2p_dev_queue; |
3ee0f0e2 SS |
642 | default: |
643 | WARN_ONCE(1, "Not a ctrl vif, no available queue\n"); | |
644 | return -1; | |
645 | } | |
de24f638 LK |
646 | } |
647 | ||
86e177d8 GG |
648 | static void iwl_mvm_probe_resp_set_noa(struct iwl_mvm *mvm, |
649 | struct sk_buff *skb) | |
650 | { | |
651 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
652 | struct iwl_mvm_vif *mvmvif = | |
653 | iwl_mvm_vif_from_mac80211(info->control.vif); | |
654 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; | |
655 | int base_len = (u8 *)mgmt->u.probe_resp.variable - (u8 *)mgmt; | |
656 | struct iwl_probe_resp_data *resp_data; | |
657 | u8 *ie, *pos; | |
658 | u8 match[] = { | |
659 | (WLAN_OUI_WFA >> 16) & 0xff, | |
660 | (WLAN_OUI_WFA >> 8) & 0xff, | |
661 | WLAN_OUI_WFA & 0xff, | |
662 | WLAN_OUI_TYPE_WFA_P2P, | |
663 | }; | |
664 | ||
665 | rcu_read_lock(); | |
666 | ||
667 | resp_data = rcu_dereference(mvmvif->probe_resp_data); | |
668 | if (!resp_data) | |
669 | goto out; | |
670 | ||
671 | if (!resp_data->notif.noa_active) | |
672 | goto out; | |
673 | ||
674 | ie = (u8 *)cfg80211_find_ie_match(WLAN_EID_VENDOR_SPECIFIC, | |
675 | mgmt->u.probe_resp.variable, | |
676 | skb->len - base_len, | |
677 | match, 4, 2); | |
678 | if (!ie) { | |
679 | IWL_DEBUG_TX(mvm, "probe resp doesn't have P2P IE\n"); | |
680 | goto out; | |
681 | } | |
682 | ||
683 | if (skb_tailroom(skb) < resp_data->noa_len) { | |
684 | if (pskb_expand_head(skb, 0, resp_data->noa_len, GFP_ATOMIC)) { | |
685 | IWL_ERR(mvm, | |
686 | "Failed to reallocate probe resp\n"); | |
687 | goto out; | |
688 | } | |
689 | } | |
690 | ||
691 | pos = skb_put(skb, resp_data->noa_len); | |
692 | ||
693 | *pos++ = WLAN_EID_VENDOR_SPECIFIC; | |
694 | /* Set length of IE body (not including ID and length itself) */ | |
695 | *pos++ = resp_data->noa_len - 2; | |
696 | *pos++ = (WLAN_OUI_WFA >> 16) & 0xff; | |
697 | *pos++ = (WLAN_OUI_WFA >> 8) & 0xff; | |
698 | *pos++ = WLAN_OUI_WFA & 0xff; | |
699 | *pos++ = WLAN_OUI_TYPE_WFA_P2P; | |
700 | ||
701 | memcpy(pos, &resp_data->notif.noa_attr, | |
702 | resp_data->noa_len - sizeof(struct ieee80211_vendor_ie)); | |
703 | ||
704 | out: | |
705 | rcu_read_unlock(); | |
706 | } | |
707 | ||
8ca151b5 JB |
708 | int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb) |
709 | { | |
710 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
5c08b0f5 | 711 | struct ieee80211_tx_info info; |
a89c72ff | 712 | struct iwl_device_tx_cmd *dev_cmd; |
8ca151b5 | 713 | u8 sta_id; |
ca8c0f4b | 714 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); |
86e177d8 | 715 | __le16 fc = hdr->frame_control; |
cfbc6c4c SS |
716 | bool offchannel = IEEE80211_SKB_CB(skb)->flags & |
717 | IEEE80211_TX_CTL_TX_OFFCHAN; | |
4120e4a1 | 718 | int queue = -1; |
54c5ef2e | 719 | |
50386305 SS |
720 | if (IWL_MVM_NON_TRANSMITTING_AP && ieee80211_is_probe_resp(fc)) |
721 | return -1; | |
722 | ||
5c08b0f5 EG |
723 | memcpy(&info, skb->cb, sizeof(info)); |
724 | ||
ac70499e AO |
725 | if (WARN_ON_ONCE(skb->len > IEEE80211_MAX_DATA_LEN + hdrlen)) |
726 | return -1; | |
727 | ||
5c08b0f5 | 728 | if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_AMPDU)) |
8ca151b5 JB |
729 | return -1; |
730 | ||
5c08b0f5 | 731 | if (info.control.vif) { |
8ca151b5 | 732 | struct iwl_mvm_vif *mvmvif = |
5c08b0f5 | 733 | iwl_mvm_vif_from_mac80211(info.control.vif); |
d0ab08d0 | 734 | |
5c08b0f5 | 735 | if (info.control.vif->type == NL80211_IFTYPE_P2P_DEVICE || |
4d339989 LK |
736 | info.control.vif->type == NL80211_IFTYPE_AP || |
737 | info.control.vif->type == NL80211_IFTYPE_ADHOC) { | |
65c3b582 | 738 | if (!ieee80211_is_data(hdr->frame_control)) |
7c305de2 IP |
739 | sta_id = mvmvif->bcast_sta.sta_id; |
740 | else | |
741 | sta_id = mvmvif->mcast_sta.sta_id; | |
742 | ||
cfbc6c4c | 743 | queue = iwl_mvm_get_ctrl_vif_queue(mvm, &info, hdr); |
c8f54701 | 744 | } else if (info.control.vif->type == NL80211_IFTYPE_MONITOR) { |
b13f43a4 EG |
745 | queue = mvm->snif_queue; |
746 | sta_id = mvm->snif_sta.sta_id; | |
4120e4a1 | 747 | } else if (info.control.vif->type == NL80211_IFTYPE_STATION && |
cfbc6c4c | 748 | offchannel) { |
4120e4a1 SS |
749 | /* |
750 | * IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets | |
751 | * that can be used in 2 different types of vifs, P2P & | |
752 | * STATION. | |
753 | * P2P uses the offchannel queue. | |
754 | * STATION (HS2.0) uses the auxiliary context of the FW, | |
755 | * and hence needs to be sent on the aux queue. | |
756 | */ | |
757 | sta_id = mvm->aux_sta.sta_id; | |
758 | queue = mvm->aux_queue; | |
d0ab08d0 | 759 | } |
8ca151b5 JB |
760 | } |
761 | ||
cfbc6c4c SS |
762 | if (queue < 0) { |
763 | IWL_ERR(mvm, "No queue was found. Dropping TX\n"); | |
4120e4a1 | 764 | return -1; |
cfbc6c4c | 765 | } |
4120e4a1 | 766 | |
86e177d8 GG |
767 | if (unlikely(ieee80211_is_probe_resp(fc))) |
768 | iwl_mvm_probe_resp_set_noa(mvm, skb); | |
769 | ||
de24f638 | 770 | IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue); |
8ca151b5 | 771 | |
5c08b0f5 | 772 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id); |
8ca151b5 JB |
773 | if (!dev_cmd) |
774 | return -1; | |
775 | ||
bd05a5bd JB |
776 | /* From now on, we cannot access info->control */ |
777 | iwl_mvm_skb_prepare_status(skb, dev_cmd); | |
778 | ||
de24f638 | 779 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, queue)) { |
8ca151b5 JB |
780 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); |
781 | return -1; | |
782 | } | |
783 | ||
784 | return 0; | |
785 | } | |
786 | ||
438af969 SS |
787 | unsigned int iwl_mvm_max_amsdu_size(struct iwl_mvm *mvm, |
788 | struct ieee80211_sta *sta, unsigned int tid) | |
7126b6f2 SS |
789 | { |
790 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
791 | enum nl80211_band band = mvmsta->vif->bss_conf.chandef.chan->band; | |
792 | u8 ac = tid_to_mac80211_ac[tid]; | |
793 | unsigned int txf; | |
aa4936b1 | 794 | int lmac = iwl_mvm_get_lmac_id(mvm->fw, band); |
7126b6f2 SS |
795 | |
796 | /* For HE redirect to trigger based fifos */ | |
797 | if (sta->he_cap.has_he && !WARN_ON(!iwl_mvm_has_new_tx_api(mvm))) | |
798 | ac += 4; | |
799 | ||
800 | txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac); | |
801 | ||
802 | /* | |
803 | * Don't send an AMSDU that will be longer than the TXF. | |
804 | * Add a security margin of 256 for the TX command + headers. | |
805 | * We also want to have the start of the next packet inside the | |
806 | * fifo to be able to send bursts. | |
807 | */ | |
808 | return min_t(unsigned int, mvmsta->max_amsdu_len, | |
809 | mvm->fwrt.smem_cfg.lmac[lmac].txfifo_size[txf] - 256); | |
810 | } | |
811 | ||
08f7d8b6 SS |
812 | #ifdef CONFIG_INET |
813 | ||
814 | static int | |
815 | iwl_mvm_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes, | |
816 | netdev_features_t netdev_flags, | |
817 | struct sk_buff_head *mpdus_skb) | |
818 | { | |
819 | struct sk_buff *tmp, *next; | |
820 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
821 | char cb[sizeof(skb->cb)]; | |
822 | u16 i = 0; | |
823 | unsigned int tcp_payload_len; | |
824 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
825 | bool ipv4 = (skb->protocol == htons(ETH_P_IP)); | |
71b256f8 | 826 | bool qos = ieee80211_is_data_qos(hdr->frame_control); |
08f7d8b6 SS |
827 | u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0; |
828 | ||
829 | skb_shinfo(skb)->gso_size = num_subframes * mss; | |
830 | memcpy(cb, skb->cb, sizeof(cb)); | |
831 | ||
832 | next = skb_gso_segment(skb, netdev_flags); | |
833 | skb_shinfo(skb)->gso_size = mss; | |
81a86e1b | 834 | skb_shinfo(skb)->gso_type = ipv4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6; |
08f7d8b6 SS |
835 | if (WARN_ON_ONCE(IS_ERR(next))) |
836 | return -EINVAL; | |
837 | else if (next) | |
838 | consume_skb(skb); | |
839 | ||
66de4b17 | 840 | skb_list_walk_safe(next, tmp, next) { |
08f7d8b6 SS |
841 | memcpy(tmp->cb, cb, sizeof(tmp->cb)); |
842 | /* | |
843 | * Compute the length of all the data added for the A-MSDU. | |
844 | * This will be used to compute the length to write in the TX | |
845 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
846 | * ETH header for n subframes. | |
847 | */ | |
848 | tcp_payload_len = skb_tail_pointer(tmp) - | |
849 | skb_transport_header(tmp) - | |
850 | tcp_hdrlen(tmp) + tmp->data_len; | |
851 | ||
852 | if (ipv4) | |
853 | ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes); | |
854 | ||
855 | if (tcp_payload_len > mss) { | |
856 | skb_shinfo(tmp)->gso_size = mss; | |
81a86e1b ED |
857 | skb_shinfo(tmp)->gso_type = ipv4 ? SKB_GSO_TCPV4 : |
858 | SKB_GSO_TCPV6; | |
08f7d8b6 | 859 | } else { |
71b256f8 | 860 | if (qos) { |
08f7d8b6 SS |
861 | u8 *qc; |
862 | ||
863 | if (ipv4) | |
864 | ip_send_check(ip_hdr(tmp)); | |
865 | ||
866 | qc = ieee80211_get_qos_ctl((void *)tmp->data); | |
867 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
868 | } | |
869 | skb_shinfo(tmp)->gso_size = 0; | |
870 | } | |
871 | ||
66de4b17 | 872 | skb_mark_not_on_list(tmp); |
08f7d8b6 SS |
873 | __skb_queue_tail(mpdus_skb, tmp); |
874 | i++; | |
875 | } | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
881 | struct ieee80211_tx_info *info, | |
882 | struct ieee80211_sta *sta, | |
883 | struct sk_buff_head *mpdus_skb) | |
884 | { | |
885 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
886 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
887 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
888 | unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len; | |
889 | u16 snap_ip_tcp, pad; | |
08f7d8b6 SS |
890 | netdev_features_t netdev_flags = NETIF_F_CSUM_MASK | NETIF_F_SG; |
891 | u8 tid; | |
892 | ||
893 | snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) + | |
894 | tcp_hdrlen(skb); | |
895 | ||
08f7d8b6 SS |
896 | if (!mvmsta->max_amsdu_len || |
897 | !ieee80211_is_data_qos(hdr->frame_control) || | |
d6882e58 | 898 | !mvmsta->amsdu_enabled) |
08f7d8b6 SS |
899 | return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb); |
900 | ||
901 | /* | |
902 | * Do not build AMSDU for IPv6 with extension headers. | |
903 | * ask stack to segment and checkum the generated MPDUs for us. | |
904 | */ | |
905 | if (skb->protocol == htons(ETH_P_IPV6) && | |
906 | ((struct ipv6hdr *)skb_network_header(skb))->nexthdr != | |
907 | IPPROTO_TCP) { | |
908 | netdev_flags &= ~NETIF_F_CSUM_MASK; | |
909 | return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb); | |
910 | } | |
911 | ||
912 | tid = ieee80211_get_tid(hdr); | |
913 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
914 | return -EINVAL; | |
915 | ||
916 | /* | |
917 | * No need to lock amsdu_in_ampdu_allowed since it can't be modified | |
918 | * during an BA session. | |
919 | */ | |
e88e2cd0 MG |
920 | if ((info->flags & IEEE80211_TX_CTL_AMPDU && |
921 | !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) || | |
08f7d8b6 SS |
922 | !(mvmsta->amsdu_enabled & BIT(tid))) |
923 | return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb); | |
924 | ||
ee4cce9b MG |
925 | /* |
926 | * Take the min of ieee80211 station and mvm station | |
927 | */ | |
928 | max_amsdu_len = | |
929 | min_t(unsigned int, sta->max_amsdu_len, | |
930 | iwl_mvm_max_amsdu_size(mvm, sta, tid)); | |
08f7d8b6 | 931 | |
08f7d8b6 SS |
932 | /* |
933 | * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not | |
934 | * supported. This is a spec requirement (IEEE 802.11-2015 | |
935 | * section 8.7.3 NOTE 3). | |
936 | */ | |
937 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
938 | !sta->vht_cap.vht_supported) | |
939 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095); | |
940 | ||
941 | /* Sub frame header + SNAP + IP header + TCP header + MSS */ | |
942 | subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss; | |
943 | pad = (4 - subf_len) & 0x3; | |
944 | ||
945 | /* | |
946 | * If we have N subframes in the A-MSDU, then the A-MSDU's size is | |
947 | * N * subf_len + (N - 1) * pad. | |
948 | */ | |
949 | num_subframes = (max_amsdu_len + pad) / (subf_len + pad); | |
950 | ||
951 | if (sta->max_amsdu_subframes && | |
952 | num_subframes > sta->max_amsdu_subframes) | |
953 | num_subframes = sta->max_amsdu_subframes; | |
954 | ||
955 | tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
956 | tcp_hdrlen(skb) + skb->data_len; | |
957 | ||
958 | /* | |
959 | * Make sure we have enough TBs for the A-MSDU: | |
960 | * 2 for each subframe | |
961 | * 1 more for each fragment | |
962 | * 1 more for the potential data in the header | |
963 | */ | |
964 | if ((num_subframes * 2 + skb_shinfo(skb)->nr_frags + 1) > | |
965 | mvm->trans->max_skb_frags) | |
966 | num_subframes = 1; | |
967 | ||
968 | if (num_subframes > 1) | |
969 | *ieee80211_get_qos_ctl(hdr) |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
970 | ||
971 | /* This skb fits in one single A-MSDU */ | |
972 | if (num_subframes * mss >= tcp_payload_len) { | |
973 | __skb_queue_tail(mpdus_skb, skb); | |
974 | return 0; | |
975 | } | |
976 | ||
977 | /* | |
978 | * Trick the segmentation function to make it | |
979 | * create SKBs that can fit into one A-MSDU. | |
980 | */ | |
981 | return iwl_mvm_tx_tso_segment(skb, num_subframes, netdev_flags, | |
982 | mpdus_skb); | |
983 | } | |
984 | #else /* CONFIG_INET */ | |
985 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
986 | struct ieee80211_tx_info *info, | |
987 | struct ieee80211_sta *sta, | |
988 | struct sk_buff_head *mpdus_skb) | |
989 | { | |
990 | /* Impossible to get TSO with CONFIG_INET */ | |
991 | WARN_ON(1); | |
992 | ||
993 | return -1; | |
994 | } | |
995 | #endif | |
996 | ||
9f9af3d7 LK |
997 | /* Check if there are any timed-out TIDs on a given shared TXQ */ |
998 | static bool iwl_mvm_txq_should_update(struct iwl_mvm *mvm, int txq_id) | |
999 | { | |
1000 | unsigned long queue_tid_bitmap = mvm->queue_info[txq_id].tid_bitmap; | |
1001 | unsigned long now = jiffies; | |
1002 | int tid; | |
1003 | ||
bb49701b SS |
1004 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) |
1005 | return false; | |
1006 | ||
9f9af3d7 LK |
1007 | for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) { |
1008 | if (time_before(mvm->queue_info[txq_id].last_frame_time[tid] + | |
1009 | IWL_MVM_DQA_QUEUE_TIMEOUT, now)) | |
1010 | return true; | |
1011 | } | |
1012 | ||
1013 | return false; | |
1014 | } | |
1015 | ||
7d9d0d56 LC |
1016 | static void iwl_mvm_tx_airtime(struct iwl_mvm *mvm, |
1017 | struct iwl_mvm_sta *mvmsta, | |
1018 | int airtime) | |
1019 | { | |
1020 | int mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK; | |
162b22c9 LK |
1021 | struct iwl_mvm_tcm_mac *mdata; |
1022 | ||
1023 | if (mac >= NUM_MAC_INDEX_DRIVER) | |
1024 | return; | |
1025 | ||
1026 | mdata = &mvm->tcm.data[mac]; | |
7d9d0d56 LC |
1027 | |
1028 | if (mvm->tcm.paused) | |
1029 | return; | |
1030 | ||
1031 | if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD)) | |
1032 | schedule_delayed_work(&mvm->tcm.work, 0); | |
1033 | ||
1034 | mdata->tx.airtime += airtime; | |
1035 | } | |
1036 | ||
162b22c9 LK |
1037 | static int iwl_mvm_tx_pkt_queued(struct iwl_mvm *mvm, |
1038 | struct iwl_mvm_sta *mvmsta, int tid) | |
7d9d0d56 LC |
1039 | { |
1040 | u32 ac = tid_to_mac80211_ac[tid]; | |
1041 | int mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK; | |
162b22c9 LK |
1042 | struct iwl_mvm_tcm_mac *mdata; |
1043 | ||
1044 | if (mac >= NUM_MAC_INDEX_DRIVER) | |
1045 | return -EINVAL; | |
1046 | ||
1047 | mdata = &mvm->tcm.data[mac]; | |
7d9d0d56 LC |
1048 | |
1049 | mdata->tx.pkts[ac]++; | |
162b22c9 LK |
1050 | |
1051 | return 0; | |
7d9d0d56 LC |
1052 | } |
1053 | ||
8ca151b5 | 1054 | /* |
9ae3b870 JK |
1055 | * Sets the fields in the Tx cmd that are crypto related. |
1056 | * | |
1057 | * This function must be called with BHs disabled. | |
8ca151b5 | 1058 | */ |
a3713f8b | 1059 | static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb, |
5c08b0f5 | 1060 | struct ieee80211_tx_info *info, |
a3713f8b | 1061 | struct ieee80211_sta *sta) |
8ca151b5 JB |
1062 | { |
1063 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
8ca151b5 | 1064 | struct iwl_mvm_sta *mvmsta; |
a89c72ff | 1065 | struct iwl_device_tx_cmd *dev_cmd; |
8ca151b5 JB |
1066 | __le16 fc; |
1067 | u16 seq_number = 0; | |
1068 | u8 tid = IWL_MAX_TID_COUNT; | |
cfbc6c4c | 1069 | u16 txq_id; |
7ec54716 | 1070 | bool is_ampdu = false; |
ca8c0f4b | 1071 | int hdrlen; |
8ca151b5 | 1072 | |
5b577a90 | 1073 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1074 | fc = hdr->frame_control; |
ca8c0f4b | 1075 | hdrlen = ieee80211_hdrlen(fc); |
8ca151b5 | 1076 | |
50386305 SS |
1077 | if (IWL_MVM_NON_TRANSMITTING_AP && ieee80211_is_probe_resp(fc)) |
1078 | return -1; | |
1079 | ||
8ca151b5 JB |
1080 | if (WARN_ON_ONCE(!mvmsta)) |
1081 | return -1; | |
1082 | ||
0ae98812 | 1083 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA)) |
8ca151b5 JB |
1084 | return -1; |
1085 | ||
e41eb3e4 FF |
1086 | if (unlikely(ieee80211_is_any_nullfunc(fc)) && sta->he_cap.has_he) |
1087 | return -1; | |
1088 | ||
86e177d8 GG |
1089 | if (unlikely(ieee80211_is_probe_resp(fc))) |
1090 | iwl_mvm_probe_resp_set_noa(mvm, skb); | |
1091 | ||
5c08b0f5 EG |
1092 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen, |
1093 | sta, mvmsta->sta_id); | |
8ca151b5 JB |
1094 | if (!dev_cmd) |
1095 | goto drop; | |
1096 | ||
3e56eadf JB |
1097 | /* |
1098 | * we handle that entirely ourselves -- for uAPSD the firmware | |
1099 | * will always send a notification, and for PS-Poll responses | |
1100 | * we'll notify mac80211 when getting frame status | |
1101 | */ | |
1102 | info->flags &= ~IEEE80211_TX_STATUS_EOSP; | |
1103 | ||
8ca151b5 JB |
1104 | spin_lock(&mvmsta->lock); |
1105 | ||
0d7f1b99 SS |
1106 | /* nullfunc frames should go to the MGMT queue regardless of QOS, |
1107 | * the condition of !ieee80211_is_qos_nullfunc(fc) keeps the default | |
1108 | * assignment of MGMT TID | |
1109 | */ | |
8ca151b5 | 1110 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
8f66e064 | 1111 | tid = ieee80211_get_tid(hdr); |
f50d693b | 1112 | if (WARN_ONCE(tid >= IWL_MAX_TID_COUNT, "Invalid TID %d", tid)) |
8ca151b5 JB |
1113 | goto drop_unlock_sta; |
1114 | ||
8ca151b5 | 1115 | is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU; |
f50d693b SS |
1116 | if (WARN_ONCE(is_ampdu && |
1117 | mvmsta->tid_data[tid].state != IWL_AGG_ON, | |
1118 | "Invalid internal agg state %d for TID %d", | |
1119 | mvmsta->tid_data[tid].state, tid)) | |
0d7f1b99 | 1120 | goto drop_unlock_sta; |
c47de665 SS |
1121 | |
1122 | seq_number = mvmsta->tid_data[tid].seq_number; | |
1123 | seq_number &= IEEE80211_SCTL_SEQ; | |
1124 | ||
1125 | if (!iwl_mvm_has_new_tx_api(mvm)) { | |
1126 | struct iwl_tx_cmd *tx_cmd = (void *)dev_cmd->payload; | |
1127 | ||
1128 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
1129 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
1130 | /* update the tx_cmd hdr as it was already copied */ | |
1131 | tx_cmd->hdr->seq_ctrl = hdr->seq_ctrl; | |
1132 | } | |
2210f695 AS |
1133 | } else if (ieee80211_is_data(fc) && !ieee80211_is_data_qos(fc)) { |
1134 | tid = IWL_TID_NON_QOS; | |
8ca151b5 JB |
1135 | } |
1136 | ||
c8f54701 | 1137 | txq_id = mvmsta->tid_data[tid].txq_id; |
a0f6bf2a | 1138 | |
0d7f1b99 | 1139 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM); |
8ca151b5 | 1140 | |
f50d693b | 1141 | if (WARN_ONCE(txq_id == IWL_MVM_INVALID_QUEUE, "Invalid TXQ id")) { |
724fe771 JB |
1142 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); |
1143 | spin_unlock(&mvmsta->lock); | |
b9f726c9 | 1144 | return -1; |
24afba76 LK |
1145 | } |
1146 | ||
c8f54701 | 1147 | if (!iwl_mvm_has_new_tx_api(mvm)) { |
9f9af3d7 LK |
1148 | /* Keep track of the time of the last frame for this RA/TID */ |
1149 | mvm->queue_info[txq_id].last_frame_time[tid] = jiffies; | |
1150 | ||
1151 | /* | |
1152 | * If we have timed-out TIDs - schedule the worker that will | |
1153 | * reconfig the queues and update them | |
1154 | * | |
f3f240f9 JB |
1155 | * Note that the no lock is taken here in order to not serialize |
1156 | * the TX flow. This isn't dangerous because scheduling | |
1157 | * mvm->add_stream_wk can't ruin the state, and if we DON'T | |
1158 | * schedule it due to some race condition then next TX we get | |
1159 | * here we will. | |
9f9af3d7 LK |
1160 | */ |
1161 | if (unlikely(mvm->queue_info[txq_id].status == | |
1162 | IWL_MVM_QUEUE_SHARED && | |
1163 | iwl_mvm_txq_should_update(mvm, txq_id))) | |
1164 | schedule_work(&mvm->add_stream_wk); | |
1165 | } | |
9794c64f | 1166 | |
f38acea6 ST |
1167 | IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x len %d\n", |
1168 | mvmsta->sta_id, tid, txq_id, | |
1169 | IEEE80211_SEQ_TO_SN(seq_number), skb->len); | |
8ca151b5 | 1170 | |
bd05a5bd JB |
1171 | /* From now on, we cannot access info->control */ |
1172 | iwl_mvm_skb_prepare_status(skb, dev_cmd); | |
1173 | ||
6d19a5eb EG |
1174 | if (ieee80211_is_data(fc)) |
1175 | iwl_mvm_mei_tx_copy_to_csme(mvm, skb, | |
1176 | info->control.hw_key ? | |
1177 | info->control.hw_key->iv_len : 0); | |
1178 | ||
8ca151b5 JB |
1179 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id)) |
1180 | goto drop_unlock_sta; | |
1181 | ||
7ec54716 | 1182 | if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc)) |
cf9d1188 | 1183 | mvmsta->tid_data[tid].seq_number = seq_number + 0x10; |
8ca151b5 JB |
1184 | |
1185 | spin_unlock(&mvmsta->lock); | |
1186 | ||
162b22c9 LK |
1187 | if (iwl_mvm_tx_pkt_queued(mvm, mvmsta, |
1188 | tid == IWL_MAX_TID_COUNT ? 0 : tid)) | |
1189 | goto drop; | |
7d9d0d56 | 1190 | |
8ca151b5 JB |
1191 | return 0; |
1192 | ||
1193 | drop_unlock_sta: | |
1194 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
1195 | spin_unlock(&mvmsta->lock); | |
1196 | drop: | |
f50d693b | 1197 | IWL_DEBUG_TX(mvm, "TX to [%d|%d] dropped\n", mvmsta->sta_id, tid); |
8ca151b5 JB |
1198 | return -1; |
1199 | } | |
1200 | ||
df2378ab JB |
1201 | int iwl_mvm_tx_skb_sta(struct iwl_mvm *mvm, struct sk_buff *skb, |
1202 | struct ieee80211_sta *sta) | |
a3713f8b EG |
1203 | { |
1204 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5c08b0f5 | 1205 | struct ieee80211_tx_info info; |
08f7d8b6 SS |
1206 | struct sk_buff_head mpdus_skbs; |
1207 | unsigned int payload_len; | |
1208 | int ret; | |
a3713f8b EG |
1209 | |
1210 | if (WARN_ON_ONCE(!mvmsta)) | |
1211 | return -1; | |
1212 | ||
0ae98812 | 1213 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA)) |
a3713f8b EG |
1214 | return -1; |
1215 | ||
5c08b0f5 EG |
1216 | memcpy(&info, skb->cb, sizeof(info)); |
1217 | ||
08f7d8b6 SS |
1218 | if (!skb_is_gso(skb)) |
1219 | return iwl_mvm_tx_mpdu(mvm, skb, &info, sta); | |
1220 | ||
1221 | payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
1222 | tcp_hdrlen(skb) + skb->data_len; | |
1223 | ||
1224 | if (payload_len <= skb_shinfo(skb)->gso_size) | |
1225 | return iwl_mvm_tx_mpdu(mvm, skb, &info, sta); | |
1226 | ||
1227 | __skb_queue_head_init(&mpdus_skbs); | |
1228 | ||
1229 | ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs); | |
1230 | if (ret) | |
1231 | return ret; | |
1232 | ||
1233 | if (WARN_ON(skb_queue_empty(&mpdus_skbs))) | |
1234 | return ret; | |
1235 | ||
1236 | while (!skb_queue_empty(&mpdus_skbs)) { | |
1237 | skb = __skb_dequeue(&mpdus_skbs); | |
1238 | ||
1239 | ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta); | |
1240 | if (ret) { | |
1241 | __skb_queue_purge(&mpdus_skbs); | |
1242 | return ret; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | return 0; | |
a3713f8b EG |
1247 | } |
1248 | ||
8ca151b5 JB |
1249 | static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm, |
1250 | struct ieee80211_sta *sta, u8 tid) | |
1251 | { | |
5b577a90 | 1252 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1253 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1254 | struct ieee80211_vif *vif = mvmsta->vif; | |
dd32162d | 1255 | u16 normalized_ssn; |
8ca151b5 JB |
1256 | |
1257 | lockdep_assert_held(&mvmsta->lock); | |
1258 | ||
3e56eadf | 1259 | if ((tid_data->state == IWL_AGG_ON || |
c8f54701 | 1260 | tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) && |
dd32162d | 1261 | iwl_mvm_tid_queued(mvm, tid_data) == 0) { |
3e56eadf | 1262 | /* |
9a3fcf91 SS |
1263 | * Now that this aggregation or DQA queue is empty tell |
1264 | * mac80211 so it knows we no longer have frames buffered for | |
1265 | * the station on this TID (for the TIM bitmap calculation.) | |
3e56eadf JB |
1266 | */ |
1267 | ieee80211_sta_set_buffered(sta, tid, false); | |
1268 | } | |
1269 | ||
dd32162d | 1270 | /* |
2f7a3863 | 1271 | * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need |
dd32162d LK |
1272 | * to align the wrap around of ssn so we compare relevant values. |
1273 | */ | |
1274 | normalized_ssn = tid_data->ssn; | |
286ca8eb | 1275 | if (mvm->trans->trans_cfg->gen2) |
dd32162d LK |
1276 | normalized_ssn &= 0xff; |
1277 | ||
1278 | if (normalized_ssn != tid_data->next_reclaimed) | |
8ca151b5 JB |
1279 | return; |
1280 | ||
1281 | switch (tid_data->state) { | |
1282 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1283 | IWL_DEBUG_TX_QUEUES(mvm, | |
1284 | "Can continue addBA flow ssn = next_recl = %d\n", | |
1285 | tid_data->next_reclaimed); | |
1286 | tid_data->state = IWL_AGG_STARTING; | |
1287 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1288 | break; | |
1289 | ||
1290 | case IWL_EMPTYING_HW_QUEUE_DELBA: | |
1291 | IWL_DEBUG_TX_QUEUES(mvm, | |
1292 | "Can continue DELBA flow ssn = next_recl = %d\n", | |
1293 | tid_data->next_reclaimed); | |
8ca151b5 | 1294 | tid_data->state = IWL_AGG_OFF; |
8ca151b5 JB |
1295 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
1296 | break; | |
1297 | ||
1298 | default: | |
1299 | break; | |
1300 | } | |
1301 | } | |
1302 | ||
1303 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1304 | const char *iwl_mvm_get_tx_fail_reason(u32 status) | |
1305 | { | |
1306 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x | |
1307 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
1308 | ||
1309 | switch (status & TX_STATUS_MSK) { | |
1310 | case TX_STATUS_SUCCESS: | |
1311 | return "SUCCESS"; | |
1312 | TX_STATUS_POSTPONE(DELAY); | |
1313 | TX_STATUS_POSTPONE(FEW_BYTES); | |
1314 | TX_STATUS_POSTPONE(BT_PRIO); | |
1315 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
1316 | TX_STATUS_POSTPONE(CALC_TTAK); | |
1317 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
1318 | TX_STATUS_FAIL(SHORT_LIMIT); | |
1319 | TX_STATUS_FAIL(LONG_LIMIT); | |
1320 | TX_STATUS_FAIL(UNDERRUN); | |
1321 | TX_STATUS_FAIL(DRAIN_FLOW); | |
1322 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
1323 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
1324 | TX_STATUS_FAIL(DEST_PS); | |
1325 | TX_STATUS_FAIL(HOST_ABORTED); | |
1326 | TX_STATUS_FAIL(BT_RETRY); | |
1327 | TX_STATUS_FAIL(STA_INVALID); | |
1328 | TX_STATUS_FAIL(FRAG_DROPPED); | |
1329 | TX_STATUS_FAIL(TID_DISABLE); | |
1330 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
1331 | TX_STATUS_FAIL(SMALL_CF_POLL); | |
1332 | TX_STATUS_FAIL(FW_DROP); | |
1333 | TX_STATUS_FAIL(STA_COLOR_MISMATCH); | |
1334 | } | |
1335 | ||
1336 | return "UNKNOWN"; | |
1337 | ||
1338 | #undef TX_STATUS_FAIL | |
1339 | #undef TX_STATUS_POSTPONE | |
1340 | } | |
1341 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1342 | ||
dc52fac3 | 1343 | static int iwl_mvm_get_hwrate_chan_width(u32 chan_width) |
8ca151b5 | 1344 | { |
dc52fac3 | 1345 | switch (chan_width) { |
8ca151b5 | 1346 | case RATE_MCS_CHAN_WIDTH_20: |
dc52fac3 | 1347 | return 0; |
8ca151b5 | 1348 | case RATE_MCS_CHAN_WIDTH_40: |
dc52fac3 | 1349 | return IEEE80211_TX_RC_40_MHZ_WIDTH; |
8ca151b5 | 1350 | case RATE_MCS_CHAN_WIDTH_80: |
dc52fac3 | 1351 | return IEEE80211_TX_RC_80_MHZ_WIDTH; |
8ca151b5 | 1352 | case RATE_MCS_CHAN_WIDTH_160: |
dc52fac3 MK |
1353 | return IEEE80211_TX_RC_160_MHZ_WIDTH; |
1354 | default: | |
1355 | return 0; | |
1356 | } | |
1357 | } | |
1358 | ||
1359 | void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags, | |
1360 | enum nl80211_band band, | |
1361 | struct ieee80211_tx_rate *r) | |
1362 | { | |
1363 | u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK; | |
1364 | u32 rate = format == RATE_MCS_HT_MSK ? | |
1365 | RATE_HT_MCS_INDEX(rate_n_flags) : | |
1366 | rate_n_flags & RATE_MCS_CODE_MSK; | |
1367 | ||
1368 | r->flags |= | |
1369 | iwl_mvm_get_hwrate_chan_width(rate_n_flags & | |
1370 | RATE_MCS_CHAN_WIDTH_MSK); | |
1371 | ||
1372 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
1373 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
1374 | if (format == RATE_MCS_HT_MSK) { | |
1375 | r->flags |= IEEE80211_TX_RC_MCS; | |
1376 | r->idx = rate; | |
1377 | } else if (format == RATE_MCS_VHT_MSK) { | |
1378 | ieee80211_rate_set_vht(r, rate, | |
1379 | ((rate_n_flags & RATE_MCS_NSS_MSK) >> | |
1380 | RATE_MCS_NSS_POS) + 1); | |
1381 | r->flags |= IEEE80211_TX_RC_VHT_MCS; | |
1382 | } else if (format == RATE_MCS_HE_MSK) { | |
1383 | /* mac80211 cannot do this without ieee80211_tx_status_ext() | |
1384 | * but it only matters for radiotap */ | |
1385 | r->idx = 0; | |
1386 | } else { | |
1387 | r->idx = iwl_mvm_legacy_hw_idx_to_mac80211_idx(rate_n_flags, | |
1388 | band); | |
8ca151b5 | 1389 | } |
dc52fac3 MK |
1390 | } |
1391 | ||
1392 | void iwl_mvm_hwrate_to_tx_rate_v1(u32 rate_n_flags, | |
1393 | enum nl80211_band band, | |
1394 | struct ieee80211_tx_rate *r) | |
1395 | { | |
1396 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) | |
1397 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
1398 | ||
1399 | r->flags |= | |
1400 | iwl_mvm_get_hwrate_chan_width(rate_n_flags & | |
1401 | RATE_MCS_CHAN_WIDTH_MSK_V1); | |
1402 | ||
48c6ebc1 | 1403 | if (rate_n_flags & RATE_MCS_SGI_MSK_V1) |
8ca151b5 | 1404 | r->flags |= IEEE80211_TX_RC_SHORT_GI; |
48c6ebc1 | 1405 | if (rate_n_flags & RATE_MCS_HT_MSK_V1) { |
8ca151b5 | 1406 | r->flags |= IEEE80211_TX_RC_MCS; |
48c6ebc1 MK |
1407 | r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1; |
1408 | } else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) { | |
8ca151b5 JB |
1409 | ieee80211_rate_set_vht( |
1410 | r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK, | |
1411 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
1412 | RATE_VHT_MCS_NSS_POS) + 1); | |
1413 | r->flags |= IEEE80211_TX_RC_VHT_MCS; | |
1414 | } else { | |
1415 | r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, | |
d310e405 | 1416 | band); |
8ca151b5 JB |
1417 | } |
1418 | } | |
1419 | ||
91b4780f | 1420 | /* |
d310e405 ES |
1421 | * translate ucode response to mac80211 tx status control values |
1422 | */ | |
dc52fac3 MK |
1423 | static void iwl_mvm_hwrate_to_tx_status(const struct iwl_fw *fw, |
1424 | u32 rate_n_flags, | |
d310e405 ES |
1425 | struct ieee80211_tx_info *info) |
1426 | { | |
1427 | struct ieee80211_tx_rate *r = &info->status.rates[0]; | |
1428 | ||
dc52fac3 | 1429 | if (iwl_fw_lookup_notif_ver(fw, LONG_GROUP, |
be8287c9 | 1430 | TX_CMD, 0) <= 6) |
dc52fac3 MK |
1431 | rate_n_flags = iwl_new_rate_from_v1(rate_n_flags); |
1432 | ||
d310e405 | 1433 | info->status.antenna = |
57b7b345 | 1434 | ((rate_n_flags & RATE_MCS_ANT_AB_MSK) >> RATE_MCS_ANT_POS); |
dc52fac3 MK |
1435 | iwl_mvm_hwrate_to_tx_rate(rate_n_flags, |
1436 | info->band, r); | |
d310e405 ES |
1437 | } |
1438 | ||
25657fec | 1439 | static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm, |
0d65ce90 | 1440 | u32 status, __le16 frame_control) |
25657fec GBA |
1441 | { |
1442 | struct iwl_fw_dbg_trigger_tlv *trig; | |
1443 | struct iwl_fw_dbg_trigger_tx_status *status_trig; | |
1444 | int i; | |
1445 | ||
0d65ce90 MG |
1446 | if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS) { |
1447 | enum iwl_fw_ini_time_point tp = | |
1448 | IWL_FW_INI_TIME_POINT_TX_FAILED; | |
1449 | ||
1450 | if (ieee80211_is_action(frame_control)) | |
1451 | tp = IWL_FW_INI_TIME_POINT_TX_WFD_ACTION_FRAME_FAILED; | |
1452 | ||
1453 | iwl_dbg_tlv_time_point(&mvm->fwrt, | |
1454 | tp, NULL); | |
1455 | return; | |
1456 | } | |
1457 | ||
6c042d75 SS |
1458 | trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, |
1459 | FW_DBG_TRIGGER_TX_STATUS); | |
1460 | if (!trig) | |
25657fec GBA |
1461 | return; |
1462 | ||
25657fec GBA |
1463 | status_trig = (void *)trig->data; |
1464 | ||
25657fec GBA |
1465 | for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) { |
1466 | /* don't collect on status 0 */ | |
1467 | if (!status_trig->statuses[i].status) | |
1468 | break; | |
1469 | ||
1470 | if (status_trig->statuses[i].status != (status & TX_STATUS_MSK)) | |
1471 | continue; | |
1472 | ||
7174beb6 JB |
1473 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, |
1474 | "Tx status %d was received", | |
1475 | status & TX_STATUS_MSK); | |
25657fec GBA |
1476 | break; |
1477 | } | |
1478 | } | |
1479 | ||
91b4780f | 1480 | /* |
12db294c SS |
1481 | * iwl_mvm_get_scd_ssn - returns the SSN of the SCD |
1482 | * @tx_resp: the Tx response from the fw (agg or non-agg) | |
1483 | * | |
1484 | * When the fw sends an AMPDU, it fetches the MPDUs one after the other. Since | |
1485 | * it can't know that everything will go well until the end of the AMPDU, it | |
1486 | * can't know in advance the number of MPDUs that will be sent in the current | |
1487 | * batch. This is why it writes the agg Tx response while it fetches the MPDUs. | |
1488 | * Hence, it can't know in advance what the SSN of the SCD will be at the end | |
1489 | * of the batch. This is why the SSN of the SCD is written at the end of the | |
1490 | * whole struct at a variable offset. This function knows how to cope with the | |
1491 | * variable offset and returns the SSN of the SCD. | |
1492 | */ | |
1493 | static inline u32 iwl_mvm_get_scd_ssn(struct iwl_mvm *mvm, | |
1494 | struct iwl_mvm_tx_resp *tx_resp) | |
1495 | { | |
1496 | return le32_to_cpup((__le32 *)iwl_mvm_get_agg_status(mvm, tx_resp) + | |
1497 | tx_resp->frame_count) & 0xfff; | |
1498 | } | |
1499 | ||
8ca151b5 JB |
1500 | static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, |
1501 | struct iwl_rx_packet *pkt) | |
1502 | { | |
1503 | struct ieee80211_sta *sta; | |
1504 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1505 | int txq_id = SEQ_TO_QUEUE(sequence); | |
a6a62193 | 1506 | /* struct iwl_mvm_tx_resp_v3 is almost the same */ |
8ca151b5 JB |
1507 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; |
1508 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1509 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
12db294c SS |
1510 | struct agg_tx_status *agg_status = |
1511 | iwl_mvm_get_agg_status(mvm, tx_resp); | |
1512 | u32 status = le16_to_cpu(agg_status->status); | |
1513 | u16 ssn = iwl_mvm_get_scd_ssn(mvm, tx_resp); | |
8ca151b5 JB |
1514 | struct sk_buff_head skbs; |
1515 | u8 skb_freed = 0; | |
ea42d1cb | 1516 | u8 lq_color; |
8ca151b5 | 1517 | u16 next_reclaimed, seq_ctl; |
532beba3 | 1518 | bool is_ndp = false; |
8ca151b5 JB |
1519 | |
1520 | __skb_queue_head_init(&skbs); | |
1521 | ||
12db294c | 1522 | if (iwl_mvm_has_new_tx_api(mvm)) |
a6a62193 | 1523 | txq_id = le16_to_cpu(tx_resp->tx_queue); |
12db294c | 1524 | |
8ca151b5 JB |
1525 | seq_ctl = le16_to_cpu(tx_resp->seq_ctl); |
1526 | ||
1527 | /* we can free until ssn % q.n_bd not inclusive */ | |
1528 | iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs); | |
1529 | ||
1530 | while (!skb_queue_empty(&skbs)) { | |
1531 | struct sk_buff *skb = __skb_dequeue(&skbs); | |
1532 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
941ab4eb | 1533 | struct ieee80211_hdr *hdr = (void *)skb->data; |
114db230 | 1534 | bool flushed = false; |
8ca151b5 JB |
1535 | |
1536 | skb_freed++; | |
1537 | ||
1538 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
1539 | ||
1540 | memset(&info->status, 0, sizeof(info->status)); | |
1541 | ||
8ca151b5 JB |
1542 | /* inform mac80211 about what happened with the frame */ |
1543 | switch (status & TX_STATUS_MSK) { | |
1544 | case TX_STATUS_SUCCESS: | |
1545 | case TX_STATUS_DIRECT_DONE: | |
1546 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1547 | break; | |
114db230 EG |
1548 | case TX_STATUS_FAIL_FIFO_FLUSHED: |
1549 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
1550 | flushed = true; | |
1551 | break; | |
8ca151b5 | 1552 | case TX_STATUS_FAIL_DEST_PS: |
c8f54701 | 1553 | /* the FW should have stopped the queue and not |
9a3fcf91 SS |
1554 | * return this status |
1555 | */ | |
75da590f JB |
1556 | IWL_ERR_LIMIT(mvm, |
1557 | "FW reported TX filtered, status=0x%x, FC=0x%x\n", | |
1558 | status, le16_to_cpu(hdr->frame_control)); | |
8ca151b5 JB |
1559 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; |
1560 | break; | |
1561 | default: | |
1562 | break; | |
1563 | } | |
1564 | ||
656fca00 AS |
1565 | if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS && |
1566 | ieee80211_is_mgmt(hdr->frame_control)) | |
1567 | iwl_mvm_toggle_tx_ant(mvm, &mvm->mgmt_last_antenna_idx); | |
1568 | ||
1a19c139 SS |
1569 | /* |
1570 | * If we are freeing multiple frames, mark all the frames | |
1571 | * but the first one as acked, since they were acknowledged | |
1572 | * before | |
1573 | * */ | |
1574 | if (skb_freed > 1) | |
1575 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1576 | ||
0d65ce90 | 1577 | iwl_mvm_tx_status_check_trigger(mvm, status, hdr->frame_control); |
25657fec | 1578 | |
8ca151b5 | 1579 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
dc52fac3 MK |
1580 | |
1581 | iwl_mvm_hwrate_to_tx_status(mvm->fw, | |
1582 | le32_to_cpu(tx_resp->initial_rate), | |
d310e405 | 1583 | info); |
dc52fac3 MK |
1584 | |
1585 | /* Don't assign the converted initial_rate, because driver | |
1586 | * TLC uses this and doesn't support the new FW rate | |
1587 | */ | |
929e6ede ES |
1588 | info->status.status_driver_data[1] = |
1589 | (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate); | |
8ca151b5 JB |
1590 | |
1591 | /* Single frame failure in an AMPDU queue => send BAR */ | |
c56108b5 | 1592 | if (info->flags & IEEE80211_TX_CTL_AMPDU && |
9ce578a5 | 1593 | !(info->flags & IEEE80211_TX_STAT_ACK) && |
114db230 | 1594 | !(info->flags & IEEE80211_TX_STAT_TX_FILTERED) && !flushed) |
8ca151b5 | 1595 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
c56108b5 | 1596 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
8ca151b5 | 1597 | |
941ab4eb SS |
1598 | /* W/A FW bug: seq_ctl is wrong upon failure / BAR frame */ |
1599 | if (ieee80211_is_back_req(hdr->frame_control)) | |
1600 | seq_ctl = 0; | |
1601 | else if (status != TX_STATUS_SUCCESS) | |
8ca151b5 | 1602 | seq_ctl = le16_to_cpu(hdr->seq_ctrl); |
8ca151b5 | 1603 | |
532beba3 EG |
1604 | if (unlikely(!seq_ctl)) { |
1605 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1606 | ||
1607 | /* | |
1608 | * If it is an NDP, we can't update next_reclaim since | |
1609 | * its sequence control is 0. Note that for that same | |
1610 | * reason, NDPs are never sent to A-MPDU'able queues | |
1611 | * so that we can never have more than one freed frame | |
1612 | * for a single Tx resonse (see WARN_ON below). | |
1613 | */ | |
1614 | if (ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1615 | is_ndp = true; | |
1616 | } | |
1617 | ||
9b5452fd EG |
1618 | /* |
1619 | * TODO: this is not accurate if we are freeing more than one | |
1620 | * packet. | |
1621 | */ | |
1622 | info->status.tx_time = | |
1623 | le16_to_cpu(tx_resp->wireless_media_time); | |
3a84b69e | 1624 | BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1); |
ea42d1cb | 1625 | lq_color = TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info); |
3a84b69e | 1626 | info->status.status_driver_data[0] = |
ea42d1cb | 1627 | RS_DRV_DATA_PACK(lq_color, tx_resp->reduced_tpc); |
3a84b69e | 1628 | |
f14d6b39 | 1629 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 JB |
1630 | } |
1631 | ||
c8f54701 JB |
1632 | /* This is an aggregation queue or might become one, so we use |
1633 | * the ssn since: ssn = wifi seq_num % 256. | |
1634 | * The seq_ctl is the sequence control of the packet to which | |
1635 | * this Tx response relates. But if there is a hole in the | |
1636 | * bitmap of the BA we received, this Tx response may allow to | |
1637 | * reclaim the hole and all the subsequent packets that were | |
1638 | * already acked. In that case, seq_ctl != ssn, and the next | |
1639 | * packet to be reclaimed will be ssn and not seq_ctl. In that | |
1640 | * case, several packets will be reclaimed even if | |
1641 | * frame_count = 1. | |
1642 | * | |
1643 | * The ssn is the index (% 256) of the latest packet that has | |
1644 | * treated (acked / dropped) + 1. | |
1645 | */ | |
1646 | next_reclaimed = ssn; | |
8ca151b5 JB |
1647 | |
1648 | IWL_DEBUG_TX_REPLY(mvm, | |
8c6e83d6 EG |
1649 | "TXQ %d status %s (0x%08x)\n", |
1650 | txq_id, iwl_mvm_get_tx_fail_reason(status), status); | |
1651 | ||
1652 | IWL_DEBUG_TX_REPLY(mvm, | |
1653 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n", | |
1654 | le32_to_cpu(tx_resp->initial_rate), | |
8ca151b5 JB |
1655 | tx_resp->failure_frame, SEQ_TO_INDEX(sequence), |
1656 | ssn, next_reclaimed, seq_ctl); | |
1657 | ||
1658 | rcu_read_lock(); | |
1659 | ||
1660 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
9bb0c1ad EG |
1661 | /* |
1662 | * sta can't be NULL otherwise it'd mean that the sta has been freed in | |
1663 | * the firmware while we still have packets for it in the Tx queues. | |
1664 | */ | |
1665 | if (WARN_ON_ONCE(!sta)) | |
1666 | goto out; | |
8ca151b5 | 1667 | |
9bb0c1ad | 1668 | if (!IS_ERR(sta)) { |
a124caf8 | 1669 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 1670 | |
7d9d0d56 LC |
1671 | iwl_mvm_tx_airtime(mvm, mvmsta, |
1672 | le16_to_cpu(tx_resp->wireless_media_time)); | |
1673 | ||
0dde2440 AS |
1674 | if ((status & TX_STATUS_MSK) != TX_STATUS_SUCCESS && |
1675 | mvmsta->sta_state < IEEE80211_STA_AUTHORIZED) | |
1676 | iwl_mvm_toggle_tx_ant(mvm, &mvmsta->tx_ant); | |
1677 | ||
2210f695 | 1678 | if (sta->wme && tid != IWL_MGMT_TID) { |
8ca151b5 JB |
1679 | struct iwl_mvm_tid_data *tid_data = |
1680 | &mvmsta->tid_data[tid]; | |
36be0eb6 | 1681 | bool send_eosp_ndp = false; |
8ca151b5 | 1682 | |
2bfb5092 | 1683 | spin_lock_bh(&mvmsta->lock); |
cf961e16 | 1684 | |
532beba3 EG |
1685 | if (!is_ndp) { |
1686 | tid_data->next_reclaimed = next_reclaimed; | |
1687 | IWL_DEBUG_TX_REPLY(mvm, | |
1688 | "Next reclaimed packet:%d\n", | |
1689 | next_reclaimed); | |
1690 | } else { | |
1691 | IWL_DEBUG_TX_REPLY(mvm, | |
1692 | "NDP - don't update next_reclaimed\n"); | |
1693 | } | |
1694 | ||
8ca151b5 | 1695 | iwl_mvm_check_ratid_empty(mvm, sta, tid); |
36be0eb6 EG |
1696 | |
1697 | if (mvmsta->sleep_tx_count) { | |
1698 | mvmsta->sleep_tx_count--; | |
1699 | if (mvmsta->sleep_tx_count && | |
dd32162d | 1700 | !iwl_mvm_tid_queued(mvm, tid_data)) { |
36be0eb6 EG |
1701 | /* |
1702 | * The number of frames in the queue | |
1703 | * dropped to 0 even if we sent less | |
1704 | * frames than we thought we had on the | |
1705 | * Tx queue. | |
1706 | * This means we had holes in the BA | |
1707 | * window that we just filled, ask | |
1708 | * mac80211 to send EOSP since the | |
1709 | * firmware won't know how to do that. | |
1710 | * Send NDP and the firmware will send | |
1711 | * EOSP notification that will trigger | |
1712 | * a call to ieee80211_sta_eosp(). | |
1713 | */ | |
1714 | send_eosp_ndp = true; | |
1715 | } | |
1716 | } | |
1717 | ||
2bfb5092 | 1718 | spin_unlock_bh(&mvmsta->lock); |
36be0eb6 EG |
1719 | if (send_eosp_ndp) { |
1720 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, | |
1721 | IEEE80211_FRAME_RELEASE_UAPSD, | |
1722 | 1, tid, false, false); | |
1723 | mvmsta->sleep_tx_count = 0; | |
1724 | ieee80211_send_eosp_nullfunc(sta, tid); | |
1725 | } | |
8ca151b5 | 1726 | } |
3e56eadf JB |
1727 | |
1728 | if (mvmsta->next_status_eosp) { | |
1729 | mvmsta->next_status_eosp = false; | |
1730 | ieee80211_sta_eosp(sta); | |
1731 | } | |
8ca151b5 | 1732 | } |
9bb0c1ad | 1733 | out: |
8ca151b5 JB |
1734 | rcu_read_unlock(); |
1735 | } | |
1736 | ||
1737 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1738 | #define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x | |
1739 | static const char *iwl_get_agg_tx_status(u16 status) | |
1740 | { | |
1741 | switch (status & AGG_TX_STATE_STATUS_MSK) { | |
1742 | AGG_TX_STATE_(TRANSMITTED); | |
1743 | AGG_TX_STATE_(UNDERRUN); | |
1744 | AGG_TX_STATE_(BT_PRIO); | |
1745 | AGG_TX_STATE_(FEW_BYTES); | |
1746 | AGG_TX_STATE_(ABORT); | |
f9cd3e08 | 1747 | AGG_TX_STATE_(TX_ON_AIR_DROP); |
8ca151b5 JB |
1748 | AGG_TX_STATE_(LAST_SENT_TRY_CNT); |
1749 | AGG_TX_STATE_(LAST_SENT_BT_KILL); | |
1750 | AGG_TX_STATE_(SCD_QUERY); | |
1751 | AGG_TX_STATE_(TEST_BAD_CRC32); | |
1752 | AGG_TX_STATE_(RESPONSE); | |
1753 | AGG_TX_STATE_(DUMP_TX); | |
1754 | AGG_TX_STATE_(DELAY_TX); | |
1755 | } | |
1756 | ||
1757 | return "UNKNOWN"; | |
1758 | } | |
1759 | ||
1760 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1761 | struct iwl_rx_packet *pkt) | |
1762 | { | |
1763 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
12db294c SS |
1764 | struct agg_tx_status *frame_status = |
1765 | iwl_mvm_get_agg_status(mvm, tx_resp); | |
8ca151b5 | 1766 | int i; |
0d65ce90 | 1767 | bool tirgger_timepoint = false; |
8ca151b5 JB |
1768 | |
1769 | for (i = 0; i < tx_resp->frame_count; i++) { | |
1770 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
0d65ce90 MG |
1771 | /* In case one frame wasn't transmitted trigger time point */ |
1772 | tirgger_timepoint |= ((fstatus & AGG_TX_STATE_STATUS_MSK) != | |
1773 | AGG_TX_STATE_TRANSMITTED); | |
8ca151b5 JB |
1774 | IWL_DEBUG_TX_REPLY(mvm, |
1775 | "status %s (0x%04x), try-count (%d) seq (0x%x)\n", | |
1776 | iwl_get_agg_tx_status(fstatus), | |
1777 | fstatus & AGG_TX_STATE_STATUS_MSK, | |
1778 | (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >> | |
1779 | AGG_TX_STATE_TRY_CNT_POS, | |
1780 | le16_to_cpu(frame_status[i].sequence)); | |
1781 | } | |
0d65ce90 MG |
1782 | |
1783 | if (tirgger_timepoint) | |
1784 | iwl_dbg_tlv_time_point(&mvm->fwrt, | |
1785 | IWL_FW_INI_TIME_POINT_TX_FAILED, NULL); | |
1786 | ||
8ca151b5 JB |
1787 | } |
1788 | #else | |
1789 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1790 | struct iwl_rx_packet *pkt) | |
1791 | {} | |
1792 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1793 | ||
1794 | static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm, | |
1795 | struct iwl_rx_packet *pkt) | |
1796 | { | |
1797 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1798 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1799 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1800 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
13303c0f | 1801 | struct iwl_mvm_sta *mvmsta; |
cf961e16 | 1802 | int queue = SEQ_TO_QUEUE(sequence); |
2210f695 | 1803 | struct ieee80211_sta *sta; |
8ca151b5 | 1804 | |
c8f54701 JB |
1805 | if (WARN_ON_ONCE(queue < IWL_MVM_DQA_MIN_DATA_QUEUE && |
1806 | (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE))) | |
8ca151b5 JB |
1807 | return; |
1808 | ||
8ca151b5 JB |
1809 | iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt); |
1810 | ||
1811 | rcu_read_lock(); | |
1812 | ||
13303c0f | 1813 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); |
8ca151b5 | 1814 | |
2210f695 AS |
1815 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); |
1816 | if (WARN_ON_ONCE(!sta || !sta->wme)) { | |
1817 | rcu_read_unlock(); | |
1818 | return; | |
1819 | } | |
1820 | ||
13303c0f | 1821 | if (!WARN_ON_ONCE(!mvmsta)) { |
8ca151b5 JB |
1822 | mvmsta->tid_data[tid].rate_n_flags = |
1823 | le32_to_cpu(tx_resp->initial_rate); | |
9b5452fd EG |
1824 | mvmsta->tid_data[tid].tx_time = |
1825 | le16_to_cpu(tx_resp->wireless_media_time); | |
ea42d1cb | 1826 | mvmsta->tid_data[tid].lq_color = |
b67ce55d | 1827 | TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info); |
7d9d0d56 LC |
1828 | iwl_mvm_tx_airtime(mvm, mvmsta, |
1829 | le16_to_cpu(tx_resp->wireless_media_time)); | |
8ca151b5 JB |
1830 | } |
1831 | ||
1832 | rcu_read_unlock(); | |
1833 | } | |
1834 | ||
0416841d | 1835 | void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
1836 | { |
1837 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1838 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1839 | ||
1840 | if (tx_resp->frame_count == 1) | |
1841 | iwl_mvm_rx_tx_cmd_single(mvm, pkt); | |
1842 | else | |
1843 | iwl_mvm_rx_tx_cmd_agg(mvm, pkt); | |
8ca151b5 JB |
1844 | } |
1845 | ||
c46e7724 SS |
1846 | static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid, |
1847 | int txq, int index, | |
d4e3a341 MG |
1848 | struct ieee80211_tx_info *tx_info, u32 rate, |
1849 | bool is_flush) | |
8ca151b5 | 1850 | { |
8ca151b5 | 1851 | struct sk_buff_head reclaimed_skbs; |
2b3eb122 | 1852 | struct iwl_mvm_tid_data *tid_data = NULL; |
8ca151b5 | 1853 | struct ieee80211_sta *sta; |
2b3eb122 | 1854 | struct iwl_mvm_sta *mvmsta = NULL; |
8ca151b5 | 1855 | struct sk_buff *skb; |
c46e7724 | 1856 | int freed; |
8ca151b5 | 1857 | |
be9ae34e | 1858 | if (WARN_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations || |
087428d3 | 1859 | tid > IWL_MAX_TID_COUNT, |
2cee4762 | 1860 | "sta_id %d tid %d", sta_id, tid)) |
0416841d | 1861 | return; |
2cee4762 | 1862 | |
8ca151b5 JB |
1863 | rcu_read_lock(); |
1864 | ||
1865 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1866 | ||
1867 | /* Reclaiming frames for a station that has been deleted ? */ | |
2b3eb122 | 1868 | if (WARN_ON_ONCE(!sta)) { |
8ca151b5 | 1869 | rcu_read_unlock(); |
0416841d | 1870 | return; |
8ca151b5 JB |
1871 | } |
1872 | ||
2b3eb122 NG |
1873 | __skb_queue_head_init(&reclaimed_skbs); |
1874 | ||
1875 | /* | |
1876 | * Release all TFDs before the SSN, i.e. all TFDs in front of | |
1877 | * block-ack window (we assume that they've been successfully | |
1878 | * transmitted ... if not, it's too late anyway). | |
1879 | */ | |
1880 | iwl_trans_reclaim(mvm->trans, txq, index, &reclaimed_skbs); | |
1881 | ||
1882 | skb_queue_walk(&reclaimed_skbs, skb) { | |
1883 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1884 | ||
1885 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
1886 | ||
1887 | memset(&info->status, 0, sizeof(info->status)); | |
1888 | /* Packet was transmitted successfully, failures come as single | |
1889 | * frames because before failing a frame the firmware transmits | |
1890 | * it without aggregation at least once. | |
1891 | */ | |
d4e3a341 MG |
1892 | if (!is_flush) |
1893 | info->flags |= IEEE80211_TX_STAT_ACK; | |
2b3eb122 NG |
1894 | } |
1895 | ||
1896 | /* | |
1897 | * It's possible to get a BA response after invalidating the rcu (rcu is | |
1898 | * invalidated in order to prevent new Tx from being sent, but there may | |
1899 | * be some frames already in-flight). | |
1900 | * In this case we just want to reclaim, and could skip all the | |
1901 | * sta-dependent stuff since it's in the middle of being removed | |
1902 | * anyways. | |
1903 | */ | |
1904 | if (IS_ERR(sta)) | |
1905 | goto out; | |
1906 | ||
5b577a90 | 1907 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1908 | tid_data = &mvmsta->tid_data[tid]; |
1909 | ||
c46e7724 | 1910 | if (tid_data->txq_id != txq) { |
1f16ea29 | 1911 | IWL_ERR(mvm, |
d4e3a341 | 1912 | "invalid reclaim request: Q %d, tid %d\n", |
c46e7724 | 1913 | tid_data->txq_id, tid); |
8ca151b5 | 1914 | rcu_read_unlock(); |
0416841d | 1915 | return; |
8ca151b5 JB |
1916 | } |
1917 | ||
83eabf1e SS |
1918 | spin_lock_bh(&mvmsta->lock); |
1919 | ||
c46e7724 | 1920 | tid_data->next_reclaimed = index; |
8ca151b5 JB |
1921 | |
1922 | iwl_mvm_check_ratid_empty(mvm, sta, tid); | |
1923 | ||
1924 | freed = 0; | |
ea42d1cb GG |
1925 | |
1926 | /* pack lq color from tid_data along the reduced txp */ | |
d4e3a341 | 1927 | tx_info->status.status_driver_data[0] = |
ea42d1cb | 1928 | RS_DRV_DATA_PACK(tid_data->lq_color, |
d4e3a341 MG |
1929 | tx_info->status.status_driver_data[0]); |
1930 | tx_info->status.status_driver_data[1] = (void *)(uintptr_t)rate; | |
8ca151b5 JB |
1931 | |
1932 | skb_queue_walk(&reclaimed_skbs, skb) { | |
143582c6 JB |
1933 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1934 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
8ca151b5 | 1935 | |
d4e3a341 MG |
1936 | if (!is_flush) { |
1937 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
1938 | freed++; | |
1939 | else | |
1940 | WARN_ON_ONCE(tid != IWL_MAX_TID_COUNT); | |
1941 | } | |
8ca151b5 | 1942 | |
a7130442 ES |
1943 | /* this is the first skb we deliver in this batch */ |
1944 | /* put the rate scaling data there */ | |
c46e7724 SS |
1945 | if (freed == 1) { |
1946 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
d4e3a341 MG |
1947 | memcpy(&info->status, &tx_info->status, |
1948 | sizeof(tx_info->status)); | |
dc52fac3 | 1949 | iwl_mvm_hwrate_to_tx_status(mvm->fw, rate, info); |
c46e7724 | 1950 | } |
8ca151b5 JB |
1951 | } |
1952 | ||
2bfb5092 | 1953 | spin_unlock_bh(&mvmsta->lock); |
8ca151b5 | 1954 | |
a7130442 ES |
1955 | /* We got a BA notif with 0 acked or scd_ssn didn't progress which is |
1956 | * possible (i.e. first MPDU in the aggregation wasn't acked) | |
1957 | * Still it's important to update RS about sent vs. acked. | |
1958 | */ | |
d4e3a341 | 1959 | if (!is_flush && skb_queue_empty(&reclaimed_skbs)) { |
a7130442 ES |
1960 | struct ieee80211_chanctx_conf *chanctx_conf = NULL; |
1961 | ||
1962 | if (mvmsta->vif) | |
1963 | chanctx_conf = | |
1964 | rcu_dereference(mvmsta->vif->chanctx_conf); | |
1965 | ||
1966 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1967 | goto out; | |
1968 | ||
d4e3a341 | 1969 | tx_info->band = chanctx_conf->def.chan->band; |
dc52fac3 | 1970 | iwl_mvm_hwrate_to_tx_status(mvm->fw, rate, tx_info); |
a7130442 | 1971 | |
4243edb4 | 1972 | if (!iwl_mvm_has_tlc_offload(mvm)) { |
9f66a397 GG |
1973 | IWL_DEBUG_TX_REPLY(mvm, |
1974 | "No reclaim. Update rs directly\n"); | |
d4e3a341 | 1975 | iwl_mvm_rs_tx_status(mvm, sta, tid, tx_info, false); |
9f66a397 | 1976 | } |
a7130442 ES |
1977 | } |
1978 | ||
1979 | out: | |
8ca151b5 JB |
1980 | rcu_read_unlock(); |
1981 | ||
1982 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1983 | skb = __skb_dequeue(&reclaimed_skbs); | |
f14d6b39 | 1984 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 | 1985 | } |
8ca151b5 JB |
1986 | } |
1987 | ||
c46e7724 SS |
1988 | void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
1989 | { | |
1990 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
afc857bc | 1991 | unsigned int pkt_len = iwl_rx_packet_payload_len(pkt); |
c46e7724 SS |
1992 | int sta_id, tid, txq, index; |
1993 | struct ieee80211_tx_info ba_info = {}; | |
1994 | struct iwl_mvm_ba_notif *ba_notif; | |
1995 | struct iwl_mvm_tid_data *tid_data; | |
1996 | struct iwl_mvm_sta *mvmsta; | |
1997 | ||
9465c3f8 GG |
1998 | ba_info.flags = IEEE80211_TX_STAT_AMPDU; |
1999 | ||
c46e7724 SS |
2000 | if (iwl_mvm_has_new_tx_api(mvm)) { |
2001 | struct iwl_mvm_compressed_ba_notif *ba_res = | |
2002 | (void *)pkt->data; | |
41fd2fec | 2003 | u8 lq_color = TX_RES_RATE_TABLE_COL_GET(ba_res->tlc_rate_info); |
afc857bc | 2004 | u16 tfd_cnt; |
cba46988 | 2005 | int i; |
c46e7724 | 2006 | |
afc857bc JB |
2007 | if (unlikely(sizeof(*ba_res) > pkt_len)) |
2008 | return; | |
2009 | ||
c46e7724 SS |
2010 | sta_id = ba_res->sta_id; |
2011 | ba_info.status.ampdu_ack_len = (u8)le16_to_cpu(ba_res->done); | |
2012 | ba_info.status.ampdu_len = (u8)le16_to_cpu(ba_res->txed); | |
2013 | ba_info.status.tx_time = | |
2014 | (u16)le32_to_cpu(ba_res->wireless_time); | |
2015 | ba_info.status.status_driver_data[0] = | |
2016 | (void *)(uintptr_t)ba_res->reduced_txp; | |
2017 | ||
afc857bc JB |
2018 | tfd_cnt = le16_to_cpu(ba_res->tfd_cnt); |
2019 | if (!tfd_cnt || struct_size(ba_res, tfd, tfd_cnt) > pkt_len) | |
2020 | return; | |
9b1ea167 | 2021 | |
41fd2fec LK |
2022 | rcu_read_lock(); |
2023 | ||
2024 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); | |
2b3eb122 NG |
2025 | /* |
2026 | * It's possible to get a BA response after invalidating the rcu | |
2027 | * (rcu is invalidated in order to prevent new Tx from being | |
2028 | * sent, but there may be some frames already in-flight). | |
2029 | * In this case we just want to reclaim, and could skip all the | |
2030 | * sta-dependent stuff since it's in the middle of being removed | |
2031 | * anyways. | |
2032 | */ | |
41fd2fec | 2033 | |
cba46988 | 2034 | /* Free per TID */ |
afc857bc | 2035 | for (i = 0; i < tfd_cnt; i++) { |
cba46988 LK |
2036 | struct iwl_mvm_compressed_ba_tfd *ba_tfd = |
2037 | &ba_res->tfd[i]; | |
2038 | ||
087428d3 LK |
2039 | tid = ba_tfd->tid; |
2040 | if (tid == IWL_MGMT_TID) | |
2041 | tid = IWL_MAX_TID_COUNT; | |
2042 | ||
2b3eb122 NG |
2043 | if (mvmsta) |
2044 | mvmsta->tid_data[i].lq_color = lq_color; | |
2045 | ||
087428d3 | 2046 | iwl_mvm_tx_reclaim(mvm, sta_id, tid, |
cba46988 LK |
2047 | (int)(le16_to_cpu(ba_tfd->q_num)), |
2048 | le16_to_cpu(ba_tfd->tfd_index), | |
2049 | &ba_info, | |
d4e3a341 | 2050 | le32_to_cpu(ba_res->tx_rate), false); |
cba46988 | 2051 | } |
c46e7724 | 2052 | |
2b3eb122 NG |
2053 | if (mvmsta) |
2054 | iwl_mvm_tx_airtime(mvm, mvmsta, | |
2055 | le32_to_cpu(ba_res->wireless_time)); | |
41fd2fec | 2056 | rcu_read_unlock(); |
afc857bc | 2057 | |
c46e7724 SS |
2058 | IWL_DEBUG_TX_REPLY(mvm, |
2059 | "BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n", | |
2060 | sta_id, le32_to_cpu(ba_res->flags), | |
2061 | le16_to_cpu(ba_res->txed), | |
2062 | le16_to_cpu(ba_res->done)); | |
2063 | return; | |
2064 | } | |
2065 | ||
2066 | ba_notif = (void *)pkt->data; | |
2067 | sta_id = ba_notif->sta_id; | |
2068 | tid = ba_notif->tid; | |
2069 | /* "flow" corresponds to Tx queue */ | |
2070 | txq = le16_to_cpu(ba_notif->scd_flow); | |
2071 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
2072 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
2073 | index = le16_to_cpu(ba_notif->scd_ssn); | |
2074 | ||
2075 | rcu_read_lock(); | |
2076 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); | |
2077 | if (WARN_ON_ONCE(!mvmsta)) { | |
2078 | rcu_read_unlock(); | |
2079 | return; | |
2080 | } | |
2081 | ||
2082 | tid_data = &mvmsta->tid_data[tid]; | |
2083 | ||
2084 | ba_info.status.ampdu_ack_len = ba_notif->txed_2_done; | |
2085 | ba_info.status.ampdu_len = ba_notif->txed; | |
2086 | ba_info.status.tx_time = tid_data->tx_time; | |
2087 | ba_info.status.status_driver_data[0] = | |
2088 | (void *)(uintptr_t)ba_notif->reduced_txp; | |
2089 | ||
2090 | rcu_read_unlock(); | |
2091 | ||
2092 | iwl_mvm_tx_reclaim(mvm, sta_id, tid, txq, index, &ba_info, | |
d4e3a341 | 2093 | tid_data->rate_n_flags, false); |
c46e7724 SS |
2094 | |
2095 | IWL_DEBUG_TX_REPLY(mvm, | |
2096 | "BA_NOTIFICATION Received from %pM, sta_id = %d\n", | |
3dc6dd96 | 2097 | ba_notif->sta_addr, ba_notif->sta_id); |
c46e7724 SS |
2098 | |
2099 | IWL_DEBUG_TX_REPLY(mvm, | |
2100 | "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", | |
2101 | ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl), | |
2102 | le64_to_cpu(ba_notif->bitmap), txq, index, | |
2103 | ba_notif->txed, ba_notif->txed_2_done); | |
2104 | ||
2105 | IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n", | |
2106 | ba_notif->reduced_txp); | |
2107 | } | |
2108 | ||
fe92e32a EG |
2109 | /* |
2110 | * Note that there are transports that buffer frames before they reach | |
2111 | * the firmware. This means that after flush_tx_path is called, the | |
2112 | * queue might not be empty. The race-free way to handle this is to: | |
2113 | * 1) set the station as draining | |
2114 | * 2) flush the Tx path | |
2115 | * 3) wait for the transport queues to be empty | |
2116 | */ | |
d4e3a341 | 2117 | int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk) |
8ca151b5 JB |
2118 | { |
2119 | int ret; | |
d167e81a | 2120 | struct iwl_tx_path_flush_cmd_v1 flush_cmd = { |
8ca151b5 JB |
2121 | .queues_ctl = cpu_to_le32(tfd_msk), |
2122 | .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH), | |
2123 | }; | |
2124 | ||
d167e81a | 2125 | WARN_ON(iwl_mvm_has_new_tx_api(mvm)); |
d4e3a341 | 2126 | ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, 0, |
8ca151b5 JB |
2127 | sizeof(flush_cmd), &flush_cmd); |
2128 | if (ret) | |
2129 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); | |
2130 | return ret; | |
2131 | } | |
d49394a1 | 2132 | |
d4e3a341 | 2133 | int iwl_mvm_flush_sta_tids(struct iwl_mvm *mvm, u32 sta_id, u16 tids) |
d49394a1 | 2134 | { |
d167e81a | 2135 | int ret; |
d4e3a341 | 2136 | struct iwl_tx_path_flush_cmd_rsp *rsp; |
d167e81a MG |
2137 | struct iwl_tx_path_flush_cmd flush_cmd = { |
2138 | .sta_id = cpu_to_le32(sta_id), | |
2139 | .tid_mask = cpu_to_le16(tids), | |
2140 | }; | |
d49394a1 | 2141 | |
d4e3a341 MG |
2142 | struct iwl_host_cmd cmd = { |
2143 | .id = TXPATH_FLUSH, | |
2144 | .len = { sizeof(flush_cmd), }, | |
2145 | .data = { &flush_cmd, }, | |
2146 | }; | |
2147 | ||
d167e81a | 2148 | WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); |
d49394a1 | 2149 | |
d4e3a341 MG |
2150 | if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, TXPATH_FLUSH, 0) > 0) |
2151 | cmd.flags |= CMD_WANT_SKB; | |
2152 | ||
2153 | IWL_DEBUG_TX_QUEUES(mvm, "flush for sta id %d tid mask 0x%x\n", | |
2154 | sta_id, tids); | |
2155 | ||
2156 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
2157 | ||
2158 | if (ret) { | |
d167e81a | 2159 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); |
d4e3a341 MG |
2160 | return ret; |
2161 | } | |
2162 | ||
2163 | if (cmd.flags & CMD_WANT_SKB) { | |
2164 | int i; | |
2165 | int num_flushed_queues; | |
2166 | ||
2167 | if (WARN_ON_ONCE(iwl_rx_packet_payload_len(cmd.resp_pkt) != sizeof(*rsp))) { | |
2168 | ret = -EIO; | |
2169 | goto free_rsp; | |
2170 | } | |
2171 | ||
2172 | rsp = (void *)cmd.resp_pkt->data; | |
2173 | ||
2174 | if (WARN_ONCE(le16_to_cpu(rsp->sta_id) != sta_id, | |
2175 | "sta_id %d != rsp_sta_id %d", | |
2176 | sta_id, le16_to_cpu(rsp->sta_id))) { | |
2177 | ret = -EIO; | |
2178 | goto free_rsp; | |
2179 | } | |
2180 | ||
2181 | num_flushed_queues = le16_to_cpu(rsp->num_flushed_queues); | |
2182 | if (WARN_ONCE(num_flushed_queues > IWL_TX_FLUSH_QUEUE_RSP, | |
2183 | "num_flushed_queues %d", num_flushed_queues)) { | |
2184 | ret = -EIO; | |
2185 | goto free_rsp; | |
2186 | } | |
2187 | ||
2188 | for (i = 0; i < num_flushed_queues; i++) { | |
2189 | struct ieee80211_tx_info tx_info = {}; | |
2190 | struct iwl_flush_queue_info *queue_info = &rsp->queues[i]; | |
2191 | int tid = le16_to_cpu(queue_info->tid); | |
2192 | int read_before = le16_to_cpu(queue_info->read_before_flush); | |
2193 | int read_after = le16_to_cpu(queue_info->read_after_flush); | |
2194 | int queue_num = le16_to_cpu(queue_info->queue_num); | |
2195 | ||
2196 | if (tid == IWL_MGMT_TID) | |
2197 | tid = IWL_MAX_TID_COUNT; | |
2198 | ||
2199 | IWL_DEBUG_TX_QUEUES(mvm, | |
2200 | "tid %d queue_id %d read-before %d read-after %d\n", | |
2201 | tid, queue_num, read_before, read_after); | |
2202 | ||
2203 | iwl_mvm_tx_reclaim(mvm, sta_id, tid, queue_num, read_after, | |
2204 | &tx_info, 0, true); | |
2205 | } | |
2206 | free_rsp: | |
2207 | iwl_free_resp(&cmd); | |
2208 | } | |
d167e81a MG |
2209 | return ret; |
2210 | } | |
d49394a1 | 2211 | |
f9084775 | 2212 | int iwl_mvm_flush_sta(struct iwl_mvm *mvm, void *sta, bool internal) |
d167e81a MG |
2213 | { |
2214 | struct iwl_mvm_int_sta *int_sta = sta; | |
2215 | struct iwl_mvm_sta *mvm_sta = sta; | |
2216 | ||
334167de EG |
2217 | BUILD_BUG_ON(offsetof(struct iwl_mvm_int_sta, sta_id) != |
2218 | offsetof(struct iwl_mvm_sta, sta_id)); | |
d167e81a | 2219 | |
334167de | 2220 | if (iwl_mvm_has_new_tx_api(mvm)) |
d4e3a341 | 2221 | return iwl_mvm_flush_sta_tids(mvm, mvm_sta->sta_id, 0xffff); |
d49394a1 | 2222 | |
d167e81a | 2223 | if (internal) |
d4e3a341 | 2224 | return iwl_mvm_flush_tx_path(mvm, int_sta->tfd_queue_msk); |
d167e81a | 2225 | |
d4e3a341 | 2226 | return iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk); |
d49394a1 | 2227 | } |