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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
4203263d | 9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
532beba3 | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
8ca151b5 JB |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
24 | * USA | |
25 | * | |
26 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 27 | * in the file called COPYING. |
8ca151b5 JB |
28 | * |
29 | * Contact Information: | |
cb2f8277 | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
51368bf7 | 35 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
4203263d | 36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
8ca151b5 JB |
37 | * All rights reserved. |
38 | * | |
39 | * Redistribution and use in source and binary forms, with or without | |
40 | * modification, are permitted provided that the following conditions | |
41 | * are met: | |
42 | * | |
43 | * * Redistributions of source code must retain the above copyright | |
44 | * notice, this list of conditions and the following disclaimer. | |
45 | * * Redistributions in binary form must reproduce the above copyright | |
46 | * notice, this list of conditions and the following disclaimer in | |
47 | * the documentation and/or other materials provided with the | |
48 | * distribution. | |
49 | * * Neither the name Intel Corporation nor the names of its | |
50 | * contributors may be used to endorse or promote products derived | |
51 | * from this software without specific prior written permission. | |
52 | * | |
53 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
54 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
55 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
56 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
57 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
58 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
59 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
60 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
61 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
62 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
63 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
64 | * | |
65 | *****************************************************************************/ | |
66 | #include <linux/ieee80211.h> | |
67 | #include <linux/etherdevice.h> | |
a3713f8b | 68 | #include <linux/tcp.h> |
a6d5e32f | 69 | #include <net/ip.h> |
5e6a98dc | 70 | #include <net/ipv6.h> |
8ca151b5 JB |
71 | |
72 | #include "iwl-trans.h" | |
73 | #include "iwl-eeprom-parse.h" | |
74 | #include "mvm.h" | |
75 | #include "sta.h" | |
2f89a5d7 | 76 | #include "fw-dbg.h" |
8ca151b5 | 77 | |
4203263d EG |
78 | static void |
79 | iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr, | |
80 | u16 tid, u16 ssn) | |
81 | { | |
82 | struct iwl_fw_dbg_trigger_tlv *trig; | |
83 | struct iwl_fw_dbg_trigger_ba *ba_trig; | |
84 | ||
85 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) | |
86 | return; | |
87 | ||
88 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); | |
89 | ba_trig = (void *)trig->data; | |
90 | ||
91 | if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) | |
92 | return; | |
93 | ||
94 | if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid))) | |
95 | return; | |
96 | ||
97 | iwl_mvm_fw_dbg_collect_trig(mvm, trig, | |
98 | "BAR sent to %pM, tid %d, ssn %d", | |
99 | addr, tid, ssn); | |
100 | } | |
101 | ||
5e6a98dc SS |
102 | #define OPT_HDR(type, skb, off) \ |
103 | (type *)(skb_network_header(skb) + (off)) | |
104 | ||
105 | static void iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb, | |
106 | struct ieee80211_hdr *hdr, | |
107 | struct ieee80211_tx_info *info, | |
108 | struct iwl_tx_cmd *tx_cmd) | |
109 | { | |
110 | #if IS_ENABLED(CONFIG_INET) | |
111 | u16 mh_len = ieee80211_hdrlen(hdr->frame_control); | |
112 | u16 offload_assist = le16_to_cpu(tx_cmd->offload_assist); | |
113 | u8 protocol = 0; | |
114 | ||
115 | /* | |
116 | * Do not compute checksum if already computed or if transport will | |
117 | * compute it | |
118 | */ | |
119 | if (skb->ip_summed != CHECKSUM_PARTIAL || IWL_MVM_SW_TX_CSUM_OFFLOAD) | |
120 | return; | |
121 | ||
122 | /* We do not expect to be requested to csum stuff we do not support */ | |
123 | if (WARN_ONCE(!(mvm->hw->netdev_features & IWL_TX_CSUM_NETIF_FLAGS) || | |
124 | (skb->protocol != htons(ETH_P_IP) && | |
125 | skb->protocol != htons(ETH_P_IPV6)), | |
126 | "No support for requested checksum\n")) { | |
127 | skb_checksum_help(skb); | |
128 | return; | |
129 | } | |
130 | ||
131 | if (skb->protocol == htons(ETH_P_IP)) { | |
132 | protocol = ip_hdr(skb)->protocol; | |
133 | } else { | |
134 | #if IS_ENABLED(CONFIG_IPV6) | |
135 | struct ipv6hdr *ipv6h = | |
136 | (struct ipv6hdr *)skb_network_header(skb); | |
137 | unsigned int off = sizeof(*ipv6h); | |
138 | ||
139 | protocol = ipv6h->nexthdr; | |
140 | while (protocol != NEXTHDR_NONE && ipv6_ext_hdr(protocol)) { | |
ecf51424 SS |
141 | struct ipv6_opt_hdr *hp; |
142 | ||
5e6a98dc SS |
143 | /* only supported extension headers */ |
144 | if (protocol != NEXTHDR_ROUTING && | |
145 | protocol != NEXTHDR_HOP && | |
ecf51424 | 146 | protocol != NEXTHDR_DEST) { |
5e6a98dc SS |
147 | skb_checksum_help(skb); |
148 | return; | |
149 | } | |
150 | ||
ecf51424 SS |
151 | hp = OPT_HDR(struct ipv6_opt_hdr, skb, off); |
152 | protocol = hp->nexthdr; | |
153 | off += ipv6_optlen(hp); | |
5e6a98dc SS |
154 | } |
155 | /* if we get here - protocol now should be TCP/UDP */ | |
156 | #endif | |
157 | } | |
158 | ||
159 | if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) { | |
160 | WARN_ON_ONCE(1); | |
161 | skb_checksum_help(skb); | |
162 | return; | |
163 | } | |
164 | ||
165 | /* enable L4 csum */ | |
166 | offload_assist |= BIT(TX_CMD_OFFLD_L4_EN); | |
167 | ||
168 | /* | |
169 | * Set offset to IP header (snap). | |
170 | * We don't support tunneling so no need to take care of inner header. | |
171 | * Size is in words. | |
172 | */ | |
173 | offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR); | |
174 | ||
175 | /* Do IPv4 csum for AMSDU only (no IP csum for Ipv6) */ | |
176 | if (skb->protocol == htons(ETH_P_IP) && | |
177 | (offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) { | |
178 | ip_hdr(skb)->check = 0; | |
179 | offload_assist |= BIT(TX_CMD_OFFLD_L3_EN); | |
180 | } | |
181 | ||
182 | /* reset UDP/TCP header csum */ | |
183 | if (protocol == IPPROTO_TCP) | |
184 | tcp_hdr(skb)->check = 0; | |
185 | else | |
186 | udp_hdr(skb)->check = 0; | |
187 | ||
188 | /* mac header len should include IV, size is in words */ | |
189 | if (info->control.hw_key) | |
190 | mh_len += info->control.hw_key->iv_len; | |
191 | mh_len /= 2; | |
192 | offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE; | |
193 | ||
194 | tx_cmd->offload_assist = cpu_to_le16(offload_assist); | |
195 | #endif | |
196 | } | |
197 | ||
8ca151b5 JB |
198 | /* |
199 | * Sets most of the Tx cmd's fields | |
200 | */ | |
6ce73e65 AN |
201 | void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, |
202 | struct iwl_tx_cmd *tx_cmd, | |
203 | struct ieee80211_tx_info *info, u8 sta_id) | |
8ca151b5 | 204 | { |
5c08b0f5 | 205 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); |
8ca151b5 JB |
206 | struct ieee80211_hdr *hdr = (void *)skb->data; |
207 | __le16 fc = hdr->frame_control; | |
208 | u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags); | |
209 | u32 len = skb->len + FCS_LEN; | |
b797e3fb | 210 | u8 ac; |
8ca151b5 JB |
211 | |
212 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
213 | tx_flags |= TX_CMD_FLG_ACK; | |
214 | else | |
215 | tx_flags &= ~TX_CMD_FLG_ACK; | |
216 | ||
217 | if (ieee80211_is_probe_resp(fc)) | |
218 | tx_flags |= TX_CMD_FLG_TSF; | |
8ca151b5 | 219 | |
8ca151b5 JB |
220 | if (ieee80211_has_morefrags(fc)) |
221 | tx_flags |= TX_CMD_FLG_MORE_FRAG; | |
222 | ||
223 | if (ieee80211_is_data_qos(fc)) { | |
224 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
225 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
226 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
d8fe4844 SS |
227 | if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) |
228 | tx_cmd->offload_assist |= | |
229 | cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)); | |
9b3b43d8 ES |
230 | } else if (ieee80211_is_back_req(fc)) { |
231 | struct ieee80211_bar *bar = (void *)skb->data; | |
232 | u16 control = le16_to_cpu(bar->control); | |
4203263d | 233 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
9b3b43d8 ES |
234 | |
235 | tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR; | |
236 | tx_cmd->tid_tspec = (control & | |
237 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> | |
238 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
239 | WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT); | |
4203263d EG |
240 | iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec, |
241 | ssn); | |
8ca151b5 JB |
242 | } else { |
243 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; | |
244 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) | |
245 | tx_flags |= TX_CMD_FLG_SEQ_CTL; | |
246 | else | |
247 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
248 | } | |
249 | ||
a9dc5060 ES |
250 | /* Default to 0 (BE) when tid_spec is set to IWL_TID_NON_QOS */ |
251 | if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT) | |
252 | ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; | |
253 | else | |
254 | ac = tid_to_mac80211_ac[0]; | |
255 | ||
b797e3fb EG |
256 | tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) << |
257 | TX_CMD_FLG_BT_PRIO_POS; | |
258 | ||
8ca151b5 JB |
259 | if (ieee80211_is_mgmt(fc)) { |
260 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
b084a356 AA |
261 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC); |
262 | else if (ieee80211_is_action(fc)) | |
263 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); | |
8ca151b5 | 264 | else |
b084a356 | 265 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 JB |
266 | |
267 | /* The spec allows Action frames in A-MPDU, we don't support | |
268 | * it | |
269 | */ | |
270 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU); | |
63f7535d | 271 | } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) { |
b084a356 | 272 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 | 273 | } else { |
b084a356 | 274 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); |
8ca151b5 JB |
275 | } |
276 | ||
8ca151b5 JB |
277 | if (ieee80211_is_data(fc) && len > mvm->rts_threshold && |
278 | !is_multicast_ether_addr(ieee80211_get_DA(hdr))) | |
279 | tx_flags |= TX_CMD_FLG_PROT_REQUIRE; | |
280 | ||
859d914c JB |
281 | if (fw_has_capa(&mvm->fw->ucode_capa, |
282 | IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) && | |
f1daa00e AO |
283 | ieee80211_action_contains_tpc(skb)) |
284 | tx_flags |= TX_CMD_FLG_WRITE_TX_POWER; | |
285 | ||
8ca151b5 JB |
286 | tx_cmd->tx_flags = cpu_to_le32(tx_flags); |
287 | /* Total # bytes to be transmitted */ | |
a6d5e32f | 288 | tx_cmd->len = cpu_to_le16((u16)skb->len + |
5c08b0f5 | 289 | (uintptr_t)skb_info->driver_data[0]); |
8ca151b5 JB |
290 | tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); |
291 | tx_cmd->sta_id = sta_id; | |
d8fe4844 SS |
292 | |
293 | /* padding is inserted later in transport */ | |
294 | if (ieee80211_hdrlen(fc) % 4 && | |
295 | !(tx_cmd->offload_assist & cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)))) | |
296 | tx_cmd->offload_assist |= cpu_to_le16(BIT(TX_CMD_OFFLD_PAD)); | |
5e6a98dc SS |
297 | |
298 | iwl_mvm_tx_csum(mvm, skb, hdr, info, tx_cmd); | |
8ca151b5 JB |
299 | } |
300 | ||
301 | /* | |
302 | * Sets the fields in the Tx cmd that are rate related | |
303 | */ | |
6ce73e65 AN |
304 | void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd, |
305 | struct ieee80211_tx_info *info, | |
306 | struct ieee80211_sta *sta, __le16 fc) | |
8ca151b5 JB |
307 | { |
308 | u32 rate_flags; | |
309 | int rate_idx; | |
310 | u8 rate_plcp; | |
311 | ||
312 | /* Set retry limit on RTS packets */ | |
313 | tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT; | |
314 | ||
315 | /* Set retry limit on DATA packets and Probe Responses*/ | |
316 | if (ieee80211_is_probe_resp(fc)) { | |
317 | tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT; | |
318 | tx_cmd->rts_retry_limit = | |
319 | min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit); | |
320 | } else if (ieee80211_is_back_req(fc)) { | |
321 | tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT; | |
322 | } else { | |
323 | tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
324 | } | |
325 | ||
326 | /* | |
e89044d7 | 327 | * for data packets, rate info comes from the table inside the fw. This |
1ffde699 | 328 | * table is controlled by LINK_QUALITY commands |
8ca151b5 JB |
329 | */ |
330 | ||
1ffde699 | 331 | if (ieee80211_is_data(fc) && sta) { |
8ca151b5 JB |
332 | tx_cmd->initial_rate_index = 0; |
333 | tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); | |
334 | return; | |
335 | } else if (ieee80211_is_back_req(fc)) { | |
2edc6ec6 EG |
336 | tx_cmd->tx_flags |= |
337 | cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); | |
8ca151b5 JB |
338 | } |
339 | ||
340 | /* HT rate doesn't make sense for a non data frame */ | |
341 | WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS, | |
f85e9d19 JB |
342 | "Got an HT rate (flags:0x%x/mcs:%d) for a non data frame (fc:0x%x)\n", |
343 | info->control.rates[0].flags, | |
344 | info->control.rates[0].idx, | |
345 | le16_to_cpu(fc)); | |
8ca151b5 JB |
346 | |
347 | rate_idx = info->control.rates[0].idx; | |
348 | /* if the rate isn't a well known legacy rate, take the lowest one */ | |
7f66ea03 | 349 | if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY) |
8ca151b5 JB |
350 | rate_idx = rate_lowest_index( |
351 | &mvm->nvm_data->bands[info->band], sta); | |
352 | ||
353 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ | |
57fbcce3 | 354 | if (info->band == NL80211_BAND_5GHZ) |
8ca151b5 JB |
355 | rate_idx += IWL_FIRST_OFDM_RATE; |
356 | ||
357 | /* For 2.4 GHZ band, check that there is no need to remap */ | |
358 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
359 | ||
360 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
361 | rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx); | |
362 | ||
363 | mvm->mgmt_last_antenna_idx = | |
a0544272 | 364 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 | 365 | mvm->mgmt_last_antenna_idx); |
34c8b24f | 366 | |
57fbcce3 | 367 | if (info->band == NL80211_BAND_2GHZ && |
34c8b24f | 368 | !iwl_mvm_bt_coex_is_shared_ant_avail(mvm)) |
923a8c1d | 369 | rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS; |
34c8b24f EG |
370 | else |
371 | rate_flags = | |
372 | BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; | |
8ca151b5 JB |
373 | |
374 | /* Set CCK flag as needed */ | |
375 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
376 | rate_flags |= RATE_MCS_CCK_MSK; | |
377 | ||
378 | /* Set the rate in the TX cmd */ | |
379 | tx_cmd->rate_n_flags = cpu_to_le32((u32)rate_plcp | rate_flags); | |
380 | } | |
381 | ||
2a53d166 AB |
382 | static inline void iwl_mvm_set_tx_cmd_pn(struct ieee80211_tx_info *info, |
383 | u8 *crypto_hdr) | |
384 | { | |
385 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
386 | u64 pn; | |
387 | ||
388 | pn = atomic64_inc_return(&keyconf->tx_pn); | |
389 | crypto_hdr[0] = pn; | |
390 | crypto_hdr[2] = 0; | |
391 | crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6); | |
392 | crypto_hdr[1] = pn >> 8; | |
393 | crypto_hdr[4] = pn >> 16; | |
394 | crypto_hdr[5] = pn >> 24; | |
395 | crypto_hdr[6] = pn >> 32; | |
396 | crypto_hdr[7] = pn >> 40; | |
397 | } | |
398 | ||
8ca151b5 JB |
399 | /* |
400 | * Sets the fields in the Tx cmd that are crypto related | |
401 | */ | |
ca8c0f4b JB |
402 | static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm, |
403 | struct ieee80211_tx_info *info, | |
404 | struct iwl_tx_cmd *tx_cmd, | |
405 | struct sk_buff *skb_frag, | |
406 | int hdrlen) | |
8ca151b5 JB |
407 | { |
408 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
ca8c0f4b JB |
409 | u8 *crypto_hdr = skb_frag->data + hdrlen; |
410 | u64 pn; | |
8ca151b5 JB |
411 | |
412 | switch (keyconf->cipher) { | |
413 | case WLAN_CIPHER_SUITE_CCMP: | |
ca8c0f4b JB |
414 | case WLAN_CIPHER_SUITE_CCMP_256: |
415 | iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd); | |
2a53d166 | 416 | iwl_mvm_set_tx_cmd_pn(info, crypto_hdr); |
8ca151b5 JB |
417 | break; |
418 | ||
419 | case WLAN_CIPHER_SUITE_TKIP: | |
420 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; | |
1ad4f639 EP |
421 | pn = atomic64_inc_return(&keyconf->tx_pn); |
422 | ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn); | |
8ca151b5 JB |
423 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
424 | break; | |
425 | ||
426 | case WLAN_CIPHER_SUITE_WEP104: | |
427 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
428 | /* fall through */ | |
429 | case WLAN_CIPHER_SUITE_WEP40: | |
430 | tx_cmd->sec_ctl |= TX_CMD_SEC_WEP | | |
431 | ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) & | |
432 | TX_CMD_SEC_WEP_KEY_IDX_MSK); | |
433 | ||
434 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); | |
435 | break; | |
2a53d166 AB |
436 | case WLAN_CIPHER_SUITE_GCMP: |
437 | case WLAN_CIPHER_SUITE_GCMP_256: | |
438 | /* TODO: Taking the key from the table might introduce a race | |
439 | * when PTK rekeying is done, having an old packets with a PN | |
440 | * based on the old key but the message encrypted with a new | |
441 | * one. | |
442 | * Need to handle this. | |
443 | */ | |
4dc6511f | 444 | tx_cmd->sec_ctl |= TX_CMD_SEC_GCMP | TX_CMD_SEC_KEY_FROM_TABLE; |
2a53d166 AB |
445 | tx_cmd->key[0] = keyconf->hw_key_idx; |
446 | iwl_mvm_set_tx_cmd_pn(info, crypto_hdr); | |
447 | break; | |
8ca151b5 | 448 | default: |
e36e5433 | 449 | tx_cmd->sec_ctl |= TX_CMD_SEC_EXT; |
8ca151b5 JB |
450 | } |
451 | } | |
452 | ||
453 | /* | |
454 | * Allocates and sets the Tx cmd the driver data pointers in the skb | |
455 | */ | |
456 | static struct iwl_device_cmd * | |
457 | iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, | |
5c08b0f5 EG |
458 | struct ieee80211_tx_info *info, int hdrlen, |
459 | struct ieee80211_sta *sta, u8 sta_id) | |
8ca151b5 JB |
460 | { |
461 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
5c08b0f5 | 462 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); |
8ca151b5 JB |
463 | struct iwl_device_cmd *dev_cmd; |
464 | struct iwl_tx_cmd *tx_cmd; | |
465 | ||
466 | dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans); | |
467 | ||
468 | if (unlikely(!dev_cmd)) | |
469 | return NULL; | |
470 | ||
471 | memset(dev_cmd, 0, sizeof(*dev_cmd)); | |
3961a61a | 472 | dev_cmd->hdr.cmd = TX_CMD; |
8ca151b5 JB |
473 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; |
474 | ||
475 | if (info->control.hw_key) | |
ca8c0f4b | 476 | iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen); |
8ca151b5 JB |
477 | |
478 | iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id); | |
479 | ||
480 | iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control); | |
481 | ||
5c08b0f5 EG |
482 | memset(&skb_info->status, 0, sizeof(skb_info->status)); |
483 | memset(skb_info->driver_data, 0, sizeof(skb_info->driver_data)); | |
8ca151b5 | 484 | |
5c08b0f5 | 485 | skb_info->driver_data[1] = dev_cmd; |
8ca151b5 JB |
486 | |
487 | return dev_cmd; | |
488 | } | |
489 | ||
de24f638 LK |
490 | static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm, |
491 | struct ieee80211_tx_info *info, __le16 fc) | |
492 | { | |
3ee0f0e2 SS |
493 | if (!iwl_mvm_is_dqa_supported(mvm)) |
494 | return info->hw_queue; | |
495 | ||
496 | switch (info->control.vif->type) { | |
497 | case NL80211_IFTYPE_AP: | |
498 | /* | |
499 | * handle legacy hostapd as well, where station may be added | |
500 | * only after assoc. | |
501 | */ | |
502 | if (ieee80211_is_probe_resp(fc) || ieee80211_is_auth(fc)) | |
4c965139 | 503 | return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; |
3ee0f0e2 SS |
504 | if (info->hw_queue == info->control.vif->cab_queue) |
505 | return info->hw_queue; | |
506 | ||
507 | WARN_ON_ONCE(1); | |
508 | return IWL_MVM_DQA_AP_PROBE_RESP_QUEUE; | |
509 | case NL80211_IFTYPE_P2P_DEVICE: | |
510 | if (ieee80211_is_mgmt(fc)) | |
4c965139 | 511 | return IWL_MVM_DQA_P2P_DEVICE_QUEUE; |
3ee0f0e2 SS |
512 | if (info->hw_queue == info->control.vif->cab_queue) |
513 | return info->hw_queue; | |
de24f638 | 514 | |
3ee0f0e2 SS |
515 | WARN_ON_ONCE(1); |
516 | return IWL_MVM_DQA_P2P_DEVICE_QUEUE; | |
517 | default: | |
518 | WARN_ONCE(1, "Not a ctrl vif, no available queue\n"); | |
519 | return -1; | |
520 | } | |
de24f638 LK |
521 | } |
522 | ||
8ca151b5 JB |
523 | int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb) |
524 | { | |
525 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
5c08b0f5 EG |
526 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); |
527 | struct ieee80211_tx_info info; | |
8ca151b5 JB |
528 | struct iwl_device_cmd *dev_cmd; |
529 | struct iwl_tx_cmd *tx_cmd; | |
530 | u8 sta_id; | |
ca8c0f4b | 531 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); |
de24f638 | 532 | int queue; |
8ca151b5 | 533 | |
54c5ef2e BL |
534 | /* IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets that can be used |
535 | * in 2 different types of vifs, P2P & STATION. P2P uses the offchannel | |
536 | * queue. STATION (HS2.0) uses the auxiliary context of the FW, | |
537 | * and hence needs to be sent on the aux queue | |
538 | */ | |
539 | if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && | |
540 | skb_info->control.vif->type == NL80211_IFTYPE_STATION) | |
541 | IEEE80211_SKB_CB(skb)->hw_queue = mvm->aux_queue; | |
542 | ||
5c08b0f5 EG |
543 | memcpy(&info, skb->cb, sizeof(info)); |
544 | ||
545 | if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_AMPDU)) | |
8ca151b5 JB |
546 | return -1; |
547 | ||
5c08b0f5 EG |
548 | if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
549 | (!info.control.vif || | |
550 | info.hw_queue != info.control.vif->cab_queue))) | |
8ca151b5 JB |
551 | return -1; |
552 | ||
a6d5e32f | 553 | /* This holds the amsdu headers length */ |
5c08b0f5 | 554 | skb_info->driver_data[0] = (void *)(uintptr_t)0; |
a6d5e32f | 555 | |
de24f638 LK |
556 | queue = info.hw_queue; |
557 | ||
8ca151b5 | 558 | /* |
d0ab08d0 | 559 | * If the interface on which the frame is sent is the P2P_DEVICE |
8ca151b5 | 560 | * or an AP/GO interface use the broadcast station associated |
d0ab08d0 IP |
561 | * with it; otherwise if the interface is a managed interface |
562 | * use the AP station associated with it for multicast traffic | |
563 | * (this is not possible for unicast packets as a TLDS discovery | |
564 | * response are sent without a station entry); otherwise use the | |
565 | * AUX station. | |
e3118ad7 LK |
566 | * In DQA mode, if vif is of type STATION and frames are not multicast, |
567 | * they should be sent from the BSS queue. For example, TDLS setup | |
568 | * frames should be sent on this queue, as they go through the AP. | |
8ca151b5 | 569 | */ |
d0ab08d0 | 570 | sta_id = mvm->aux_sta.sta_id; |
5c08b0f5 | 571 | if (info.control.vif) { |
8ca151b5 | 572 | struct iwl_mvm_vif *mvmvif = |
5c08b0f5 | 573 | iwl_mvm_vif_from_mac80211(info.control.vif); |
d0ab08d0 | 574 | |
5c08b0f5 | 575 | if (info.control.vif->type == NL80211_IFTYPE_P2P_DEVICE || |
de24f638 | 576 | info.control.vif->type == NL80211_IFTYPE_AP) { |
d0ab08d0 | 577 | sta_id = mvmvif->bcast_sta.sta_id; |
de24f638 LK |
578 | queue = iwl_mvm_get_ctrl_vif_queue(mvm, &info, |
579 | hdr->frame_control); | |
3ee0f0e2 SS |
580 | if (queue < 0) |
581 | return -1; | |
582 | ||
de24f638 LK |
583 | } else if (info.control.vif->type == NL80211_IFTYPE_STATION && |
584 | is_multicast_ether_addr(hdr->addr1)) { | |
d0ab08d0 IP |
585 | u8 ap_sta_id = ACCESS_ONCE(mvmvif->ap_sta_id); |
586 | ||
587 | if (ap_sta_id != IWL_MVM_STATION_COUNT) | |
588 | sta_id = ap_sta_id; | |
e3118ad7 LK |
589 | } else if (iwl_mvm_is_dqa_supported(mvm) && |
590 | info.control.vif->type == NL80211_IFTYPE_STATION) { | |
591 | queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE; | |
d0ab08d0 | 592 | } |
8ca151b5 JB |
593 | } |
594 | ||
de24f638 | 595 | IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue); |
8ca151b5 | 596 | |
5c08b0f5 | 597 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id); |
8ca151b5 JB |
598 | if (!dev_cmd) |
599 | return -1; | |
600 | ||
8ca151b5 JB |
601 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; |
602 | ||
603 | /* Copy MAC header from skb into command buffer */ | |
ca8c0f4b | 604 | memcpy(tx_cmd->hdr, hdr, hdrlen); |
8ca151b5 | 605 | |
de24f638 | 606 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, queue)) { |
8ca151b5 JB |
607 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); |
608 | return -1; | |
609 | } | |
610 | ||
fb896c44 LK |
611 | /* |
612 | * Increase the pending frames counter, so that later when a reply comes | |
613 | * in and the counter is decreased - we don't start getting negative | |
614 | * values. | |
615 | * Note that we don't need to make sure it isn't agg'd, since we're | |
616 | * TXing non-sta | |
617 | */ | |
618 | atomic_inc(&mvm->pending_frames[sta_id]); | |
619 | ||
8ca151b5 JB |
620 | return 0; |
621 | } | |
622 | ||
a6d5e32f EG |
623 | #ifdef CONFIG_INET |
624 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
5c08b0f5 | 625 | struct ieee80211_tx_info *info, |
a3713f8b EG |
626 | struct ieee80211_sta *sta, |
627 | struct sk_buff_head *mpdus_skb) | |
628 | { | |
bb81bb68 | 629 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
a6d5e32f EG |
630 | struct ieee80211_hdr *hdr = (void *)skb->data; |
631 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
a3713f8b | 632 | struct sk_buff *tmp, *next; |
a6d5e32f | 633 | char cb[sizeof(skb->cb)]; |
bb81bb68 | 634 | unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len; |
a6d5e32f EG |
635 | bool ipv4 = (skb->protocol == htons(ETH_P_IP)); |
636 | u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0; | |
637 | u16 amsdu_add, snap_ip_tcp, pad, i = 0; | |
9e7dce28 | 638 | unsigned int dbg_max_amsdu_len; |
5e6a98dc | 639 | netdev_features_t netdev_features = NETIF_F_CSUM_MASK | NETIF_F_SG; |
50b0213f | 640 | u8 *qc, tid, txf; |
a6d5e32f EG |
641 | |
642 | snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) + | |
643 | tcp_hdrlen(skb); | |
644 | ||
bb81bb68 EG |
645 | qc = ieee80211_get_qos_ctl(hdr); |
646 | tid = *qc & IEEE80211_QOS_CTL_TID_MASK; | |
647 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
648 | return -EINVAL; | |
649 | ||
fa820d69 EG |
650 | dbg_max_amsdu_len = ACCESS_ONCE(mvm->max_amsdu_len); |
651 | ||
a6d5e32f | 652 | if (!sta->max_amsdu_len || |
04e3a5da | 653 | !ieee80211_is_data_qos(hdr->frame_control) || |
fa820d69 | 654 | (!mvmsta->tlc_amsdu && !dbg_max_amsdu_len)) { |
a6d5e32f EG |
655 | num_subframes = 1; |
656 | pad = 0; | |
657 | goto segment; | |
658 | } | |
659 | ||
5e6a98dc SS |
660 | /* |
661 | * Do not build AMSDU for IPv6 with extension headers. | |
662 | * ask stack to segment and checkum the generated MPDUs for us. | |
663 | */ | |
664 | if (skb->protocol == htons(ETH_P_IPV6) && | |
665 | ((struct ipv6hdr *)skb_network_header(skb))->nexthdr != | |
666 | IPPROTO_TCP) { | |
667 | num_subframes = 1; | |
668 | pad = 0; | |
669 | netdev_features &= ~NETIF_F_CSUM_MASK; | |
670 | goto segment; | |
671 | } | |
672 | ||
bb81bb68 EG |
673 | /* |
674 | * No need to lock amsdu_in_ampdu_allowed since it can't be modified | |
675 | * during an BA session. | |
676 | */ | |
677 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
678 | !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) { | |
a6d5e32f EG |
679 | num_subframes = 1; |
680 | pad = 0; | |
681 | goto segment; | |
682 | } | |
683 | ||
bb81bb68 | 684 | max_amsdu_len = sta->max_amsdu_len; |
50b0213f EG |
685 | |
686 | /* the Tx FIFO to which this A-MSDU will be routed */ | |
687 | txf = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; | |
688 | ||
689 | /* | |
690 | * Don't send an AMSDU that will be longer than the TXF. | |
691 | * Add a security margin of 256 for the TX command + headers. | |
692 | * We also want to have the start of the next packet inside the | |
693 | * fifo to be able to send bursts. | |
694 | */ | |
695 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
696 | mvm->shared_mem_cfg.txfifo_size[txf] - 256); | |
697 | ||
fa820d69 | 698 | if (unlikely(dbg_max_amsdu_len)) |
9e7dce28 EG |
699 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, |
700 | dbg_max_amsdu_len); | |
bb81bb68 EG |
701 | |
702 | /* | |
703 | * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not | |
704 | * supported. This is a spec requirement (IEEE 802.11-2015 | |
705 | * section 8.7.3 NOTE 3). | |
706 | */ | |
707 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
708 | !sta->vht_cap.vht_supported) | |
709 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095); | |
710 | ||
a6d5e32f EG |
711 | /* Sub frame header + SNAP + IP header + TCP header + MSS */ |
712 | subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss; | |
713 | pad = (4 - subf_len) & 0x3; | |
714 | ||
715 | /* | |
716 | * If we have N subframes in the A-MSDU, then the A-MSDU's size is | |
717 | * N * subf_len + (N - 1) * pad. | |
718 | */ | |
bb81bb68 EG |
719 | num_subframes = (max_amsdu_len + pad) / (subf_len + pad); |
720 | if (num_subframes > 1) | |
a6d5e32f | 721 | *qc |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
a6d5e32f EG |
722 | |
723 | tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
724 | tcp_hdrlen(skb) + skb->data_len; | |
725 | ||
726 | /* | |
727 | * Make sure we have enough TBs for the A-MSDU: | |
728 | * 2 for each subframe | |
729 | * 1 more for each fragment | |
730 | * 1 more for the potential data in the header | |
731 | */ | |
732 | num_subframes = | |
733 | min_t(unsigned int, num_subframes, | |
734 | (mvm->trans->max_skb_frags - 1 - | |
735 | skb_shinfo(skb)->nr_frags) / 2); | |
736 | ||
737 | /* This skb fits in one single A-MSDU */ | |
738 | if (num_subframes * mss >= tcp_payload_len) { | |
5c08b0f5 EG |
739 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); |
740 | ||
a6d5e32f EG |
741 | /* |
742 | * Compute the length of all the data added for the A-MSDU. | |
743 | * This will be used to compute the length to write in the TX | |
744 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
745 | * ETH header for n subframes. Note that the original skb | |
746 | * already had one set of SNAP / IP / TCP headers. | |
747 | */ | |
748 | num_subframes = DIV_ROUND_UP(tcp_payload_len, mss); | |
a6d5e32f EG |
749 | amsdu_add = num_subframes * sizeof(struct ethhdr) + |
750 | (num_subframes - 1) * (snap_ip_tcp + pad); | |
751 | /* This holds the amsdu headers length */ | |
5c08b0f5 | 752 | skb_info->driver_data[0] = (void *)(uintptr_t)amsdu_add; |
a6d5e32f EG |
753 | |
754 | __skb_queue_tail(mpdus_skb, skb); | |
755 | return 0; | |
756 | } | |
a3713f8b | 757 | |
a6d5e32f EG |
758 | /* |
759 | * Trick the segmentation function to make it | |
760 | * create SKBs that can fit into one A-MSDU. | |
761 | */ | |
762 | segment: | |
763 | skb_shinfo(skb)->gso_size = num_subframes * mss; | |
764 | memcpy(cb, skb->cb, sizeof(cb)); | |
765 | ||
5e6a98dc | 766 | next = skb_gso_segment(skb, netdev_features); |
a6d5e32f EG |
767 | skb_shinfo(skb)->gso_size = mss; |
768 | if (WARN_ON_ONCE(IS_ERR(next))) | |
a3713f8b EG |
769 | return -EINVAL; |
770 | else if (next) | |
a6d5e32f | 771 | consume_skb(skb); |
a3713f8b EG |
772 | |
773 | while (next) { | |
774 | tmp = next; | |
775 | next = tmp->next; | |
a6d5e32f | 776 | |
a3713f8b | 777 | memcpy(tmp->cb, cb, sizeof(tmp->cb)); |
a6d5e32f EG |
778 | /* |
779 | * Compute the length of all the data added for the A-MSDU. | |
780 | * This will be used to compute the length to write in the TX | |
781 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
782 | * ETH header for n subframes. | |
783 | */ | |
784 | tcp_payload_len = skb_tail_pointer(tmp) - | |
785 | skb_transport_header(tmp) - | |
786 | tcp_hdrlen(tmp) + tmp->data_len; | |
787 | ||
788 | if (ipv4) | |
789 | ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes); | |
790 | ||
791 | if (tcp_payload_len > mss) { | |
5c08b0f5 EG |
792 | struct ieee80211_tx_info *skb_info = |
793 | IEEE80211_SKB_CB(tmp); | |
794 | ||
a6d5e32f | 795 | num_subframes = DIV_ROUND_UP(tcp_payload_len, mss); |
a6d5e32f EG |
796 | amsdu_add = num_subframes * sizeof(struct ethhdr) + |
797 | (num_subframes - 1) * (snap_ip_tcp + pad); | |
5c08b0f5 EG |
798 | skb_info->driver_data[0] = |
799 | (void *)(uintptr_t)amsdu_add; | |
a6d5e32f EG |
800 | skb_shinfo(tmp)->gso_size = mss; |
801 | } else { | |
bb81bb68 | 802 | qc = ieee80211_get_qos_ctl((void *)tmp->data); |
a6d5e32f EG |
803 | |
804 | if (ipv4) | |
805 | ip_send_check(ip_hdr(tmp)); | |
806 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
807 | skb_shinfo(tmp)->gso_size = 0; | |
808 | } | |
a3713f8b EG |
809 | |
810 | tmp->prev = NULL; | |
811 | tmp->next = NULL; | |
812 | ||
813 | __skb_queue_tail(mpdus_skb, tmp); | |
a6d5e32f | 814 | i++; |
a3713f8b EG |
815 | } |
816 | ||
817 | return 0; | |
818 | } | |
a6d5e32f EG |
819 | #else /* CONFIG_INET */ |
820 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
5c08b0f5 | 821 | struct ieee80211_tx_info *info, |
a6d5e32f EG |
822 | struct ieee80211_sta *sta, |
823 | struct sk_buff_head *mpdus_skb) | |
824 | { | |
825 | /* Impossible to get TSO with CONFIG_INET */ | |
826 | WARN_ON(1); | |
827 | ||
828 | return -1; | |
829 | } | |
830 | #endif | |
a3713f8b | 831 | |
24afba76 LK |
832 | static void iwl_mvm_tx_add_stream(struct iwl_mvm *mvm, |
833 | struct iwl_mvm_sta *mvm_sta, u8 tid, | |
834 | struct sk_buff *skb) | |
835 | { | |
836 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
837 | u8 mac_queue = info->hw_queue; | |
838 | struct sk_buff_head *deferred_tx_frames; | |
839 | ||
840 | lockdep_assert_held(&mvm_sta->lock); | |
841 | ||
842 | mvm_sta->deferred_traffic_tid_map |= BIT(tid); | |
843 | set_bit(mvm_sta->sta_id, mvm->sta_deferred_frames); | |
844 | ||
845 | deferred_tx_frames = &mvm_sta->tid_data[tid].deferred_tx_frames; | |
846 | ||
847 | skb_queue_tail(deferred_tx_frames, skb); | |
848 | ||
849 | /* | |
850 | * The first deferred frame should've stopped the MAC queues, so we | |
851 | * should never get a second deferred frame for the RA/TID. | |
852 | */ | |
853 | if (!WARN(skb_queue_len(deferred_tx_frames) != 1, | |
854 | "RATID %d/%d has %d deferred frames\n", mvm_sta->sta_id, tid, | |
855 | skb_queue_len(deferred_tx_frames))) { | |
856 | iwl_mvm_stop_mac_queues(mvm, BIT(mac_queue)); | |
857 | schedule_work(&mvm->add_stream_wk); | |
858 | } | |
859 | } | |
860 | ||
9f9af3d7 LK |
861 | /* Check if there are any timed-out TIDs on a given shared TXQ */ |
862 | static bool iwl_mvm_txq_should_update(struct iwl_mvm *mvm, int txq_id) | |
863 | { | |
864 | unsigned long queue_tid_bitmap = mvm->queue_info[txq_id].tid_bitmap; | |
865 | unsigned long now = jiffies; | |
866 | int tid; | |
867 | ||
868 | for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) { | |
869 | if (time_before(mvm->queue_info[txq_id].last_frame_time[tid] + | |
870 | IWL_MVM_DQA_QUEUE_TIMEOUT, now)) | |
871 | return true; | |
872 | } | |
873 | ||
874 | return false; | |
875 | } | |
876 | ||
8ca151b5 JB |
877 | /* |
878 | * Sets the fields in the Tx cmd that are crypto related | |
879 | */ | |
a3713f8b | 880 | static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb, |
5c08b0f5 | 881 | struct ieee80211_tx_info *info, |
a3713f8b | 882 | struct ieee80211_sta *sta) |
8ca151b5 JB |
883 | { |
884 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
8ca151b5 JB |
885 | struct iwl_mvm_sta *mvmsta; |
886 | struct iwl_device_cmd *dev_cmd; | |
887 | struct iwl_tx_cmd *tx_cmd; | |
888 | __le16 fc; | |
889 | u16 seq_number = 0; | |
890 | u8 tid = IWL_MAX_TID_COUNT; | |
891 | u8 txq_id = info->hw_queue; | |
7ec54716 | 892 | bool is_ampdu = false; |
ca8c0f4b | 893 | int hdrlen; |
8ca151b5 | 894 | |
5b577a90 | 895 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 896 | fc = hdr->frame_control; |
ca8c0f4b | 897 | hdrlen = ieee80211_hdrlen(fc); |
8ca151b5 JB |
898 | |
899 | if (WARN_ON_ONCE(!mvmsta)) | |
900 | return -1; | |
901 | ||
881acd89 | 902 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 JB |
903 | return -1; |
904 | ||
5c08b0f5 EG |
905 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen, |
906 | sta, mvmsta->sta_id); | |
8ca151b5 JB |
907 | if (!dev_cmd) |
908 | goto drop; | |
909 | ||
910 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; | |
911 | /* From now on, we cannot access info->control */ | |
912 | ||
3e56eadf JB |
913 | /* |
914 | * we handle that entirely ourselves -- for uAPSD the firmware | |
915 | * will always send a notification, and for PS-Poll responses | |
916 | * we'll notify mac80211 when getting frame status | |
917 | */ | |
918 | info->flags &= ~IEEE80211_TX_STATUS_EOSP; | |
919 | ||
8ca151b5 JB |
920 | spin_lock(&mvmsta->lock); |
921 | ||
922 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { | |
923 | u8 *qc = NULL; | |
924 | qc = ieee80211_get_qos_ctl(hdr); | |
925 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
926 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
927 | goto drop_unlock_sta; | |
928 | ||
929 | seq_number = mvmsta->tid_data[tid].seq_number; | |
930 | seq_number &= IEEE80211_SCTL_SEQ; | |
931 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
932 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
8ca151b5 | 933 | is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU; |
24afba76 LK |
934 | } else if (iwl_mvm_is_dqa_supported(mvm) && |
935 | (ieee80211_is_qos_nullfunc(fc) || | |
936 | ieee80211_is_nullfunc(fc))) { | |
937 | /* | |
938 | * nullfunc frames should go to the MGMT queue regardless of QOS | |
939 | */ | |
940 | tid = IWL_MAX_TID_COUNT; | |
8ca151b5 JB |
941 | } |
942 | ||
7585c354 | 943 | if (iwl_mvm_is_dqa_supported(mvm)) { |
9794c64f LK |
944 | txq_id = mvmsta->tid_data[tid].txq_id; |
945 | ||
7585c354 LK |
946 | if (ieee80211_is_mgmt(fc)) |
947 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; | |
948 | } | |
949 | ||
8ca151b5 | 950 | /* Copy MAC header from skb into command buffer */ |
ca8c0f4b | 951 | memcpy(tx_cmd->hdr, hdr, hdrlen); |
8ca151b5 JB |
952 | |
953 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM); | |
954 | ||
e3118ad7 | 955 | if (sta->tdls && !iwl_mvm_is_dqa_supported(mvm)) { |
a0f6bf2a AN |
956 | /* default to TID 0 for non-QoS packets */ |
957 | u8 tdls_tid = tid == IWL_MAX_TID_COUNT ? 0 : tid; | |
958 | ||
959 | txq_id = mvmsta->hw_queue[tid_to_mac80211_ac[tdls_tid]]; | |
960 | } | |
961 | ||
8ca151b5 JB |
962 | if (is_ampdu) { |
963 | if (WARN_ON_ONCE(mvmsta->tid_data[tid].state != IWL_AGG_ON)) | |
964 | goto drop_unlock_sta; | |
965 | txq_id = mvmsta->tid_data[tid].txq_id; | |
966 | } | |
967 | ||
9794c64f LK |
968 | /* Check if TXQ needs to be allocated or re-activated */ |
969 | if (unlikely(txq_id == IEEE80211_INVAL_HW_QUEUE || | |
970 | !mvmsta->tid_data[tid].is_tid_active) && | |
971 | iwl_mvm_is_dqa_supported(mvm)) { | |
972 | /* If TXQ needs to be allocated... */ | |
973 | if (txq_id == IEEE80211_INVAL_HW_QUEUE) { | |
24afba76 LK |
974 | iwl_mvm_tx_add_stream(mvm, mvmsta, tid, skb); |
975 | ||
976 | /* | |
977 | * The frame is now deferred, and the worker scheduled | |
978 | * will re-allocate it, so we can free it for now. | |
979 | */ | |
980 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
981 | spin_unlock(&mvmsta->lock); | |
982 | return 0; | |
983 | } | |
984 | ||
9794c64f LK |
985 | /* If we are here - TXQ exists and needs to be re-activated */ |
986 | spin_lock(&mvm->queue_info_lock); | |
987 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; | |
988 | mvmsta->tid_data[tid].is_tid_active = true; | |
989 | spin_unlock(&mvm->queue_info_lock); | |
990 | ||
991 | IWL_DEBUG_TX_QUEUES(mvm, "Re-activating queue %d for TX\n", | |
992 | txq_id); | |
24afba76 LK |
993 | } |
994 | ||
9f9af3d7 LK |
995 | if (iwl_mvm_is_dqa_supported(mvm)) { |
996 | /* Keep track of the time of the last frame for this RA/TID */ | |
997 | mvm->queue_info[txq_id].last_frame_time[tid] = jiffies; | |
998 | ||
999 | /* | |
1000 | * If we have timed-out TIDs - schedule the worker that will | |
1001 | * reconfig the queues and update them | |
1002 | * | |
1003 | * Note that the mvm->queue_info_lock isn't being taken here in | |
1004 | * order to not serialize the TX flow. This isn't dangerous | |
1005 | * because scheduling mvm->add_stream_wk can't ruin the state, | |
1006 | * and if we DON'T schedule it due to some race condition then | |
1007 | * next TX we get here we will. | |
1008 | */ | |
1009 | if (unlikely(mvm->queue_info[txq_id].status == | |
1010 | IWL_MVM_QUEUE_SHARED && | |
1011 | iwl_mvm_txq_should_update(mvm, txq_id))) | |
1012 | schedule_work(&mvm->add_stream_wk); | |
1013 | } | |
9794c64f | 1014 | |
8ca151b5 | 1015 | IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id, |
cf9d1188 | 1016 | tid, txq_id, IEEE80211_SEQ_TO_SN(seq_number)); |
8ca151b5 | 1017 | |
8ca151b5 JB |
1018 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id)) |
1019 | goto drop_unlock_sta; | |
1020 | ||
7ec54716 | 1021 | if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc)) |
cf9d1188 | 1022 | mvmsta->tid_data[tid].seq_number = seq_number + 0x10; |
8ca151b5 JB |
1023 | |
1024 | spin_unlock(&mvmsta->lock); | |
1025 | ||
cf961e16 LK |
1026 | /* Increase pending frames count if this isn't AMPDU */ |
1027 | if (!is_ampdu) | |
e3d4bc8c | 1028 | atomic_inc(&mvm->pending_frames[mvmsta->sta_id]); |
8ca151b5 JB |
1029 | |
1030 | return 0; | |
1031 | ||
1032 | drop_unlock_sta: | |
1033 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
1034 | spin_unlock(&mvmsta->lock); | |
1035 | drop: | |
1036 | return -1; | |
1037 | } | |
1038 | ||
a3713f8b EG |
1039 | int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, |
1040 | struct ieee80211_sta *sta) | |
1041 | { | |
1042 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
5c08b0f5 EG |
1043 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); |
1044 | struct ieee80211_tx_info info; | |
a3713f8b EG |
1045 | struct sk_buff_head mpdus_skbs; |
1046 | unsigned int payload_len; | |
1047 | int ret; | |
1048 | ||
1049 | if (WARN_ON_ONCE(!mvmsta)) | |
1050 | return -1; | |
1051 | ||
1052 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) | |
1053 | return -1; | |
1054 | ||
5c08b0f5 EG |
1055 | memcpy(&info, skb->cb, sizeof(info)); |
1056 | ||
a6d5e32f | 1057 | /* This holds the amsdu headers length */ |
5c08b0f5 | 1058 | skb_info->driver_data[0] = (void *)(uintptr_t)0; |
a6d5e32f | 1059 | |
a3713f8b | 1060 | if (!skb_is_gso(skb)) |
5c08b0f5 | 1061 | return iwl_mvm_tx_mpdu(mvm, skb, &info, sta); |
a3713f8b EG |
1062 | |
1063 | payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
1064 | tcp_hdrlen(skb) + skb->data_len; | |
1065 | ||
1066 | if (payload_len <= skb_shinfo(skb)->gso_size) | |
5c08b0f5 | 1067 | return iwl_mvm_tx_mpdu(mvm, skb, &info, sta); |
a3713f8b EG |
1068 | |
1069 | __skb_queue_head_init(&mpdus_skbs); | |
1070 | ||
5c08b0f5 | 1071 | ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs); |
a3713f8b EG |
1072 | if (ret) |
1073 | return ret; | |
1074 | ||
1075 | if (WARN_ON(skb_queue_empty(&mpdus_skbs))) | |
1076 | return ret; | |
1077 | ||
1078 | while (!skb_queue_empty(&mpdus_skbs)) { | |
a6d5e32f | 1079 | skb = __skb_dequeue(&mpdus_skbs); |
a3713f8b | 1080 | |
5c08b0f5 | 1081 | ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta); |
a3713f8b EG |
1082 | if (ret) { |
1083 | __skb_queue_purge(&mpdus_skbs); | |
1084 | return ret; | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
8ca151b5 JB |
1091 | static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm, |
1092 | struct ieee80211_sta *sta, u8 tid) | |
1093 | { | |
5b577a90 | 1094 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1095 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
1096 | struct ieee80211_vif *vif = mvmsta->vif; | |
1097 | ||
1098 | lockdep_assert_held(&mvmsta->lock); | |
1099 | ||
3e56eadf JB |
1100 | if ((tid_data->state == IWL_AGG_ON || |
1101 | tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) && | |
1102 | iwl_mvm_tid_queued(tid_data) == 0) { | |
1103 | /* | |
1104 | * Now that this aggregation queue is empty tell mac80211 so it | |
1105 | * knows we no longer have frames buffered for the station on | |
1106 | * this TID (for the TIM bitmap calculation.) | |
1107 | */ | |
1108 | ieee80211_sta_set_buffered(sta, tid, false); | |
1109 | } | |
1110 | ||
8ca151b5 JB |
1111 | if (tid_data->ssn != tid_data->next_reclaimed) |
1112 | return; | |
1113 | ||
1114 | switch (tid_data->state) { | |
1115 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1116 | IWL_DEBUG_TX_QUEUES(mvm, | |
1117 | "Can continue addBA flow ssn = next_recl = %d\n", | |
1118 | tid_data->next_reclaimed); | |
1119 | tid_data->state = IWL_AGG_STARTING; | |
1120 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1121 | break; | |
1122 | ||
1123 | case IWL_EMPTYING_HW_QUEUE_DELBA: | |
1124 | IWL_DEBUG_TX_QUEUES(mvm, | |
1125 | "Can continue DELBA flow ssn = next_recl = %d\n", | |
1126 | tid_data->next_reclaimed); | |
15985fba LK |
1127 | if (!iwl_mvm_is_dqa_supported(mvm)) { |
1128 | u8 mac80211_ac = tid_to_mac80211_ac[tid]; | |
1129 | ||
1130 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, | |
1131 | vif->hw_queue[mac80211_ac], tid, | |
1132 | CMD_ASYNC); | |
1133 | } | |
8ca151b5 | 1134 | tid_data->state = IWL_AGG_OFF; |
8ca151b5 JB |
1135 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
1136 | break; | |
1137 | ||
1138 | default: | |
1139 | break; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1144 | const char *iwl_mvm_get_tx_fail_reason(u32 status) | |
1145 | { | |
1146 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x | |
1147 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
1148 | ||
1149 | switch (status & TX_STATUS_MSK) { | |
1150 | case TX_STATUS_SUCCESS: | |
1151 | return "SUCCESS"; | |
1152 | TX_STATUS_POSTPONE(DELAY); | |
1153 | TX_STATUS_POSTPONE(FEW_BYTES); | |
1154 | TX_STATUS_POSTPONE(BT_PRIO); | |
1155 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
1156 | TX_STATUS_POSTPONE(CALC_TTAK); | |
1157 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
1158 | TX_STATUS_FAIL(SHORT_LIMIT); | |
1159 | TX_STATUS_FAIL(LONG_LIMIT); | |
1160 | TX_STATUS_FAIL(UNDERRUN); | |
1161 | TX_STATUS_FAIL(DRAIN_FLOW); | |
1162 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
1163 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
1164 | TX_STATUS_FAIL(DEST_PS); | |
1165 | TX_STATUS_FAIL(HOST_ABORTED); | |
1166 | TX_STATUS_FAIL(BT_RETRY); | |
1167 | TX_STATUS_FAIL(STA_INVALID); | |
1168 | TX_STATUS_FAIL(FRAG_DROPPED); | |
1169 | TX_STATUS_FAIL(TID_DISABLE); | |
1170 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
1171 | TX_STATUS_FAIL(SMALL_CF_POLL); | |
1172 | TX_STATUS_FAIL(FW_DROP); | |
1173 | TX_STATUS_FAIL(STA_COLOR_MISMATCH); | |
1174 | } | |
1175 | ||
1176 | return "UNKNOWN"; | |
1177 | ||
1178 | #undef TX_STATUS_FAIL | |
1179 | #undef TX_STATUS_POSTPONE | |
1180 | } | |
1181 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1182 | ||
d310e405 | 1183 | void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags, |
57fbcce3 | 1184 | enum nl80211_band band, |
d310e405 | 1185 | struct ieee80211_tx_rate *r) |
8ca151b5 | 1186 | { |
8ca151b5 JB |
1187 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
1188 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
1189 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1190 | case RATE_MCS_CHAN_WIDTH_20: | |
1191 | break; | |
1192 | case RATE_MCS_CHAN_WIDTH_40: | |
1193 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
1194 | break; | |
1195 | case RATE_MCS_CHAN_WIDTH_80: | |
1196 | r->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH; | |
1197 | break; | |
1198 | case RATE_MCS_CHAN_WIDTH_160: | |
1199 | r->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH; | |
1200 | break; | |
1201 | } | |
1202 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
1203 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
1204 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
1205 | r->flags |= IEEE80211_TX_RC_MCS; | |
1206 | r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
1207 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { | |
1208 | ieee80211_rate_set_vht( | |
1209 | r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK, | |
1210 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
1211 | RATE_VHT_MCS_NSS_POS) + 1); | |
1212 | r->flags |= IEEE80211_TX_RC_VHT_MCS; | |
1213 | } else { | |
1214 | r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, | |
d310e405 | 1215 | band); |
8ca151b5 JB |
1216 | } |
1217 | } | |
1218 | ||
d310e405 ES |
1219 | /** |
1220 | * translate ucode response to mac80211 tx status control values | |
1221 | */ | |
1222 | static void iwl_mvm_hwrate_to_tx_status(u32 rate_n_flags, | |
1223 | struct ieee80211_tx_info *info) | |
1224 | { | |
1225 | struct ieee80211_tx_rate *r = &info->status.rates[0]; | |
1226 | ||
1227 | info->status.antenna = | |
1228 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
1229 | iwl_mvm_hwrate_to_tx_rate(rate_n_flags, info->band, r); | |
1230 | } | |
1231 | ||
25657fec GBA |
1232 | static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm, |
1233 | u32 status) | |
1234 | { | |
1235 | struct iwl_fw_dbg_trigger_tlv *trig; | |
1236 | struct iwl_fw_dbg_trigger_tx_status *status_trig; | |
1237 | int i; | |
1238 | ||
1239 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TX_STATUS)) | |
1240 | return; | |
1241 | ||
1242 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TX_STATUS); | |
1243 | status_trig = (void *)trig->data; | |
1244 | ||
1245 | if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) | |
1246 | return; | |
1247 | ||
1248 | for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) { | |
1249 | /* don't collect on status 0 */ | |
1250 | if (!status_trig->statuses[i].status) | |
1251 | break; | |
1252 | ||
1253 | if (status_trig->statuses[i].status != (status & TX_STATUS_MSK)) | |
1254 | continue; | |
1255 | ||
1256 | iwl_mvm_fw_dbg_collect_trig(mvm, trig, | |
1257 | "Tx status %d was received", | |
1258 | status & TX_STATUS_MSK); | |
1259 | break; | |
1260 | } | |
1261 | } | |
1262 | ||
8ca151b5 JB |
1263 | static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, |
1264 | struct iwl_rx_packet *pkt) | |
1265 | { | |
1266 | struct ieee80211_sta *sta; | |
1267 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1268 | int txq_id = SEQ_TO_QUEUE(sequence); | |
1269 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1270 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1271 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1272 | u32 status = le16_to_cpu(tx_resp->status.status); | |
1273 | u16 ssn = iwl_mvm_get_scd_ssn(tx_resp); | |
1274 | struct iwl_mvm_sta *mvmsta; | |
1275 | struct sk_buff_head skbs; | |
1276 | u8 skb_freed = 0; | |
1277 | u16 next_reclaimed, seq_ctl; | |
532beba3 | 1278 | bool is_ndp = false; |
cf961e16 | 1279 | bool txq_agg = false; /* Is this TXQ aggregated */ |
8ca151b5 JB |
1280 | |
1281 | __skb_queue_head_init(&skbs); | |
1282 | ||
1283 | seq_ctl = le16_to_cpu(tx_resp->seq_ctl); | |
1284 | ||
1285 | /* we can free until ssn % q.n_bd not inclusive */ | |
1286 | iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs); | |
1287 | ||
1288 | while (!skb_queue_empty(&skbs)) { | |
1289 | struct sk_buff *skb = __skb_dequeue(&skbs); | |
1290 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1291 | ||
1292 | skb_freed++; | |
1293 | ||
1294 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
1295 | ||
1296 | memset(&info->status, 0, sizeof(info->status)); | |
1297 | ||
1298 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
1299 | ||
1300 | /* inform mac80211 about what happened with the frame */ | |
1301 | switch (status & TX_STATUS_MSK) { | |
1302 | case TX_STATUS_SUCCESS: | |
1303 | case TX_STATUS_DIRECT_DONE: | |
1304 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1305 | break; | |
1306 | case TX_STATUS_FAIL_DEST_PS: | |
1307 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; | |
1308 | break; | |
1309 | default: | |
1310 | break; | |
1311 | } | |
1312 | ||
25657fec GBA |
1313 | iwl_mvm_tx_status_check_trigger(mvm, status); |
1314 | ||
8ca151b5 | 1315 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
d310e405 ES |
1316 | iwl_mvm_hwrate_to_tx_status(le32_to_cpu(tx_resp->initial_rate), |
1317 | info); | |
929e6ede ES |
1318 | info->status.status_driver_data[1] = |
1319 | (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate); | |
8ca151b5 JB |
1320 | |
1321 | /* Single frame failure in an AMPDU queue => send BAR */ | |
19e737c9 | 1322 | if (txq_id >= mvm->first_agg_queue && |
9ce578a5 ES |
1323 | !(info->flags & IEEE80211_TX_STAT_ACK) && |
1324 | !(info->flags & IEEE80211_TX_STAT_TX_FILTERED)) | |
8ca151b5 | 1325 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
8ca151b5 | 1326 | |
ebea2f32 EG |
1327 | /* W/A FW bug: seq_ctl is wrong when the status isn't success */ |
1328 | if (status != TX_STATUS_SUCCESS) { | |
8ca151b5 JB |
1329 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1330 | seq_ctl = le16_to_cpu(hdr->seq_ctrl); | |
1331 | } | |
1332 | ||
532beba3 EG |
1333 | if (unlikely(!seq_ctl)) { |
1334 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1335 | ||
1336 | /* | |
1337 | * If it is an NDP, we can't update next_reclaim since | |
1338 | * its sequence control is 0. Note that for that same | |
1339 | * reason, NDPs are never sent to A-MPDU'able queues | |
1340 | * so that we can never have more than one freed frame | |
1341 | * for a single Tx resonse (see WARN_ON below). | |
1342 | */ | |
1343 | if (ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1344 | is_ndp = true; | |
1345 | } | |
1346 | ||
9b5452fd EG |
1347 | /* |
1348 | * TODO: this is not accurate if we are freeing more than one | |
1349 | * packet. | |
1350 | */ | |
1351 | info->status.tx_time = | |
1352 | le16_to_cpu(tx_resp->wireless_media_time); | |
3a84b69e EP |
1353 | BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1); |
1354 | info->status.status_driver_data[0] = | |
1355 | (void *)(uintptr_t)tx_resp->reduced_tpc; | |
1356 | ||
f14d6b39 | 1357 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 JB |
1358 | } |
1359 | ||
19e737c9 | 1360 | if (txq_id >= mvm->first_agg_queue) { |
8ca151b5 JB |
1361 | /* If this is an aggregation queue, we use the ssn since: |
1362 | * ssn = wifi seq_num % 256. | |
1363 | * The seq_ctl is the sequence control of the packet to which | |
1364 | * this Tx response relates. But if there is a hole in the | |
1365 | * bitmap of the BA we received, this Tx response may allow to | |
1366 | * reclaim the hole and all the subsequent packets that were | |
1367 | * already acked. In that case, seq_ctl != ssn, and the next | |
1368 | * packet to be reclaimed will be ssn and not seq_ctl. In that | |
1369 | * case, several packets will be reclaimed even if | |
1370 | * frame_count = 1. | |
1371 | * | |
1372 | * The ssn is the index (% 256) of the latest packet that has | |
1373 | * treated (acked / dropped) + 1. | |
1374 | */ | |
1375 | next_reclaimed = ssn; | |
1376 | } else { | |
1377 | /* The next packet to be reclaimed is the one after this one */ | |
9a886586 | 1378 | next_reclaimed = IEEE80211_SEQ_TO_SN(seq_ctl + 0x10); |
8ca151b5 JB |
1379 | } |
1380 | ||
1381 | IWL_DEBUG_TX_REPLY(mvm, | |
8c6e83d6 EG |
1382 | "TXQ %d status %s (0x%08x)\n", |
1383 | txq_id, iwl_mvm_get_tx_fail_reason(status), status); | |
1384 | ||
1385 | IWL_DEBUG_TX_REPLY(mvm, | |
1386 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n", | |
1387 | le32_to_cpu(tx_resp->initial_rate), | |
8ca151b5 JB |
1388 | tx_resp->failure_frame, SEQ_TO_INDEX(sequence), |
1389 | ssn, next_reclaimed, seq_ctl); | |
1390 | ||
1391 | rcu_read_lock(); | |
1392 | ||
1393 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
9bb0c1ad EG |
1394 | /* |
1395 | * sta can't be NULL otherwise it'd mean that the sta has been freed in | |
1396 | * the firmware while we still have packets for it in the Tx queues. | |
1397 | */ | |
1398 | if (WARN_ON_ONCE(!sta)) | |
1399 | goto out; | |
8ca151b5 | 1400 | |
9bb0c1ad | 1401 | if (!IS_ERR(sta)) { |
5b577a90 | 1402 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1403 | |
1404 | if (tid != IWL_TID_NON_QOS) { | |
1405 | struct iwl_mvm_tid_data *tid_data = | |
1406 | &mvmsta->tid_data[tid]; | |
36be0eb6 | 1407 | bool send_eosp_ndp = false; |
8ca151b5 | 1408 | |
2bfb5092 | 1409 | spin_lock_bh(&mvmsta->lock); |
2c4a247e OG |
1410 | if (iwl_mvm_is_dqa_supported(mvm)) { |
1411 | enum iwl_mvm_agg_state state; | |
1412 | ||
1413 | state = mvmsta->tid_data[tid].state; | |
1414 | txq_agg = (state == IWL_AGG_ON || | |
1415 | state == IWL_EMPTYING_HW_QUEUE_DELBA); | |
1416 | } else { | |
1417 | txq_agg = txq_id >= mvm->first_agg_queue; | |
1418 | } | |
cf961e16 | 1419 | |
532beba3 EG |
1420 | if (!is_ndp) { |
1421 | tid_data->next_reclaimed = next_reclaimed; | |
1422 | IWL_DEBUG_TX_REPLY(mvm, | |
1423 | "Next reclaimed packet:%d\n", | |
1424 | next_reclaimed); | |
1425 | } else { | |
1426 | IWL_DEBUG_TX_REPLY(mvm, | |
1427 | "NDP - don't update next_reclaimed\n"); | |
1428 | } | |
1429 | ||
8ca151b5 | 1430 | iwl_mvm_check_ratid_empty(mvm, sta, tid); |
36be0eb6 EG |
1431 | |
1432 | if (mvmsta->sleep_tx_count) { | |
1433 | mvmsta->sleep_tx_count--; | |
1434 | if (mvmsta->sleep_tx_count && | |
1435 | !iwl_mvm_tid_queued(tid_data)) { | |
1436 | /* | |
1437 | * The number of frames in the queue | |
1438 | * dropped to 0 even if we sent less | |
1439 | * frames than we thought we had on the | |
1440 | * Tx queue. | |
1441 | * This means we had holes in the BA | |
1442 | * window that we just filled, ask | |
1443 | * mac80211 to send EOSP since the | |
1444 | * firmware won't know how to do that. | |
1445 | * Send NDP and the firmware will send | |
1446 | * EOSP notification that will trigger | |
1447 | * a call to ieee80211_sta_eosp(). | |
1448 | */ | |
1449 | send_eosp_ndp = true; | |
1450 | } | |
1451 | } | |
1452 | ||
2bfb5092 | 1453 | spin_unlock_bh(&mvmsta->lock); |
36be0eb6 EG |
1454 | if (send_eosp_ndp) { |
1455 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, | |
1456 | IEEE80211_FRAME_RELEASE_UAPSD, | |
1457 | 1, tid, false, false); | |
1458 | mvmsta->sleep_tx_count = 0; | |
1459 | ieee80211_send_eosp_nullfunc(sta, tid); | |
1460 | } | |
8ca151b5 | 1461 | } |
3e56eadf JB |
1462 | |
1463 | if (mvmsta->next_status_eosp) { | |
1464 | mvmsta->next_status_eosp = false; | |
1465 | ieee80211_sta_eosp(sta); | |
1466 | } | |
8ca151b5 | 1467 | } else { |
8ca151b5 JB |
1468 | mvmsta = NULL; |
1469 | } | |
1470 | ||
1471 | /* | |
1472 | * If the txq is not an AMPDU queue, there is no chance we freed | |
1473 | * several skbs. Check that out... | |
8ca151b5 | 1474 | */ |
cf961e16 | 1475 | if (txq_agg) |
9bb0c1ad EG |
1476 | goto out; |
1477 | ||
1478 | /* We can't free more than one frame at once on a shared queue */ | |
cf961e16 | 1479 | WARN_ON(!iwl_mvm_is_dqa_supported(mvm) && (skb_freed > 1)); |
9bb0c1ad | 1480 | |
589a6ba4 | 1481 | /* If we have still frames for this STA nothing to do here */ |
9bb0c1ad EG |
1482 | if (!atomic_sub_and_test(skb_freed, &mvm->pending_frames[sta_id])) |
1483 | goto out; | |
1484 | ||
1485 | if (mvmsta && mvmsta->vif->type == NL80211_IFTYPE_AP) { | |
003e5236 | 1486 | |
9bb0c1ad | 1487 | /* |
003e5236 AO |
1488 | * If there are no pending frames for this STA and |
1489 | * the tx to this station is not disabled, notify | |
1490 | * mac80211 that this station can now wake up in its | |
9bb0c1ad EG |
1491 | * STA table. |
1492 | * If mvmsta is not NULL, sta is valid. | |
1493 | */ | |
003e5236 AO |
1494 | |
1495 | spin_lock_bh(&mvmsta->lock); | |
1496 | ||
1497 | if (!mvmsta->disable_tx) | |
1498 | ieee80211_sta_block_awake(mvm->hw, sta, false); | |
1499 | ||
1500 | spin_unlock_bh(&mvmsta->lock); | |
9bb0c1ad EG |
1501 | } |
1502 | ||
1503 | if (PTR_ERR(sta) == -EBUSY || PTR_ERR(sta) == -ENOENT) { | |
1504 | /* | |
1505 | * We are draining and this was the last packet - pre_rcu_remove | |
1506 | * has been called already. We might be after the | |
1507 | * synchronize_net already. | |
1508 | * Don't rely on iwl_mvm_rm_sta to see the empty Tx queues. | |
1509 | */ | |
1510 | set_bit(sta_id, mvm->sta_drained); | |
1511 | schedule_work(&mvm->sta_drained_wk); | |
8ca151b5 JB |
1512 | } |
1513 | ||
9bb0c1ad | 1514 | out: |
8ca151b5 JB |
1515 | rcu_read_unlock(); |
1516 | } | |
1517 | ||
1518 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1519 | #define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x | |
1520 | static const char *iwl_get_agg_tx_status(u16 status) | |
1521 | { | |
1522 | switch (status & AGG_TX_STATE_STATUS_MSK) { | |
1523 | AGG_TX_STATE_(TRANSMITTED); | |
1524 | AGG_TX_STATE_(UNDERRUN); | |
1525 | AGG_TX_STATE_(BT_PRIO); | |
1526 | AGG_TX_STATE_(FEW_BYTES); | |
1527 | AGG_TX_STATE_(ABORT); | |
1528 | AGG_TX_STATE_(LAST_SENT_TTL); | |
1529 | AGG_TX_STATE_(LAST_SENT_TRY_CNT); | |
1530 | AGG_TX_STATE_(LAST_SENT_BT_KILL); | |
1531 | AGG_TX_STATE_(SCD_QUERY); | |
1532 | AGG_TX_STATE_(TEST_BAD_CRC32); | |
1533 | AGG_TX_STATE_(RESPONSE); | |
1534 | AGG_TX_STATE_(DUMP_TX); | |
1535 | AGG_TX_STATE_(DELAY_TX); | |
1536 | } | |
1537 | ||
1538 | return "UNKNOWN"; | |
1539 | } | |
1540 | ||
1541 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1542 | struct iwl_rx_packet *pkt) | |
1543 | { | |
1544 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1545 | struct agg_tx_status *frame_status = &tx_resp->status; | |
1546 | int i; | |
1547 | ||
1548 | for (i = 0; i < tx_resp->frame_count; i++) { | |
1549 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
1550 | ||
1551 | IWL_DEBUG_TX_REPLY(mvm, | |
1552 | "status %s (0x%04x), try-count (%d) seq (0x%x)\n", | |
1553 | iwl_get_agg_tx_status(fstatus), | |
1554 | fstatus & AGG_TX_STATE_STATUS_MSK, | |
1555 | (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >> | |
1556 | AGG_TX_STATE_TRY_CNT_POS, | |
1557 | le16_to_cpu(frame_status[i].sequence)); | |
1558 | } | |
1559 | } | |
1560 | #else | |
1561 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1562 | struct iwl_rx_packet *pkt) | |
1563 | {} | |
1564 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1565 | ||
1566 | static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm, | |
1567 | struct iwl_rx_packet *pkt) | |
1568 | { | |
1569 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1570 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1571 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1572 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
13303c0f | 1573 | struct iwl_mvm_sta *mvmsta; |
cf961e16 | 1574 | int queue = SEQ_TO_QUEUE(sequence); |
8ca151b5 | 1575 | |
cf961e16 LK |
1576 | if (WARN_ON_ONCE(queue < mvm->first_agg_queue && |
1577 | (!iwl_mvm_is_dqa_supported(mvm) || | |
1578 | (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)))) | |
8ca151b5 JB |
1579 | return; |
1580 | ||
1581 | if (WARN_ON_ONCE(tid == IWL_TID_NON_QOS)) | |
1582 | return; | |
1583 | ||
1584 | iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt); | |
1585 | ||
1586 | rcu_read_lock(); | |
1587 | ||
13303c0f | 1588 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); |
8ca151b5 | 1589 | |
13303c0f | 1590 | if (!WARN_ON_ONCE(!mvmsta)) { |
8ca151b5 JB |
1591 | mvmsta->tid_data[tid].rate_n_flags = |
1592 | le32_to_cpu(tx_resp->initial_rate); | |
9b5452fd EG |
1593 | mvmsta->tid_data[tid].tx_time = |
1594 | le16_to_cpu(tx_resp->wireless_media_time); | |
8ca151b5 JB |
1595 | } |
1596 | ||
1597 | rcu_read_unlock(); | |
1598 | } | |
1599 | ||
0416841d | 1600 | void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
1601 | { |
1602 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1603 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1604 | ||
1605 | if (tx_resp->frame_count == 1) | |
1606 | iwl_mvm_rx_tx_cmd_single(mvm, pkt); | |
1607 | else | |
1608 | iwl_mvm_rx_tx_cmd_agg(mvm, pkt); | |
8ca151b5 JB |
1609 | } |
1610 | ||
c46e7724 SS |
1611 | static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid, |
1612 | int txq, int index, | |
1613 | struct ieee80211_tx_info *ba_info, u32 rate) | |
8ca151b5 | 1614 | { |
8ca151b5 JB |
1615 | struct sk_buff_head reclaimed_skbs; |
1616 | struct iwl_mvm_tid_data *tid_data; | |
8ca151b5 JB |
1617 | struct ieee80211_sta *sta; |
1618 | struct iwl_mvm_sta *mvmsta; | |
8ca151b5 | 1619 | struct sk_buff *skb; |
c46e7724 | 1620 | int freed; |
8ca151b5 | 1621 | |
2cee4762 ES |
1622 | if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT || |
1623 | tid >= IWL_MAX_TID_COUNT, | |
1624 | "sta_id %d tid %d", sta_id, tid)) | |
0416841d | 1625 | return; |
2cee4762 | 1626 | |
8ca151b5 JB |
1627 | rcu_read_lock(); |
1628 | ||
1629 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1630 | ||
1631 | /* Reclaiming frames for a station that has been deleted ? */ | |
1632 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
1633 | rcu_read_unlock(); | |
0416841d | 1634 | return; |
8ca151b5 JB |
1635 | } |
1636 | ||
5b577a90 | 1637 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1638 | tid_data = &mvmsta->tid_data[tid]; |
1639 | ||
c46e7724 | 1640 | if (tid_data->txq_id != txq) { |
1f16ea29 | 1641 | IWL_ERR(mvm, |
c46e7724 SS |
1642 | "invalid BA notification: Q %d, tid %d\n", |
1643 | tid_data->txq_id, tid); | |
8ca151b5 | 1644 | rcu_read_unlock(); |
0416841d | 1645 | return; |
8ca151b5 JB |
1646 | } |
1647 | ||
2bfb5092 | 1648 | spin_lock_bh(&mvmsta->lock); |
8ca151b5 JB |
1649 | |
1650 | __skb_queue_head_init(&reclaimed_skbs); | |
1651 | ||
1652 | /* | |
1653 | * Release all TFDs before the SSN, i.e. all TFDs in front of | |
1654 | * block-ack window (we assume that they've been successfully | |
1655 | * transmitted ... if not, it's too late anyway). | |
1656 | */ | |
c46e7724 | 1657 | iwl_trans_reclaim(mvm->trans, txq, index, &reclaimed_skbs); |
8ca151b5 | 1658 | |
c46e7724 | 1659 | tid_data->next_reclaimed = index; |
8ca151b5 JB |
1660 | |
1661 | iwl_mvm_check_ratid_empty(mvm, sta, tid); | |
1662 | ||
1663 | freed = 0; | |
c46e7724 | 1664 | ba_info->status.status_driver_data[1] = (void *)(uintptr_t)rate; |
8ca151b5 JB |
1665 | |
1666 | skb_queue_walk(&reclaimed_skbs, skb) { | |
143582c6 JB |
1667 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1668 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
8ca151b5 JB |
1669 | |
1670 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
1671 | freed++; | |
1672 | else | |
1673 | WARN_ON_ONCE(1); | |
1674 | ||
8ca151b5 JB |
1675 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); |
1676 | ||
143582c6 JB |
1677 | memset(&info->status, 0, sizeof(info->status)); |
1678 | /* Packet was transmitted successfully, failures come as single | |
1679 | * frames because before failing a frame the firmware transmits | |
1680 | * it without aggregation at least once. | |
1681 | */ | |
1682 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1683 | ||
a7130442 ES |
1684 | /* this is the first skb we deliver in this batch */ |
1685 | /* put the rate scaling data there */ | |
c46e7724 SS |
1686 | if (freed == 1) { |
1687 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1688 | memcpy(&info->status, &ba_info->status, | |
1689 | sizeof(ba_info->status)); | |
1690 | iwl_mvm_hwrate_to_tx_status(rate, info); | |
1691 | } | |
8ca151b5 JB |
1692 | } |
1693 | ||
2bfb5092 | 1694 | spin_unlock_bh(&mvmsta->lock); |
8ca151b5 | 1695 | |
a7130442 ES |
1696 | /* We got a BA notif with 0 acked or scd_ssn didn't progress which is |
1697 | * possible (i.e. first MPDU in the aggregation wasn't acked) | |
1698 | * Still it's important to update RS about sent vs. acked. | |
1699 | */ | |
1700 | if (skb_queue_empty(&reclaimed_skbs)) { | |
a7130442 ES |
1701 | struct ieee80211_chanctx_conf *chanctx_conf = NULL; |
1702 | ||
1703 | if (mvmsta->vif) | |
1704 | chanctx_conf = | |
1705 | rcu_dereference(mvmsta->vif->chanctx_conf); | |
1706 | ||
1707 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1708 | goto out; | |
1709 | ||
c46e7724 SS |
1710 | ba_info->band = chanctx_conf->def.chan->band; |
1711 | iwl_mvm_hwrate_to_tx_status(rate, ba_info); | |
a7130442 ES |
1712 | |
1713 | IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n"); | |
c46e7724 | 1714 | iwl_mvm_rs_tx_status(mvm, sta, tid, ba_info, false); |
a7130442 ES |
1715 | } |
1716 | ||
1717 | out: | |
8ca151b5 JB |
1718 | rcu_read_unlock(); |
1719 | ||
1720 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1721 | skb = __skb_dequeue(&reclaimed_skbs); | |
f14d6b39 | 1722 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 | 1723 | } |
8ca151b5 JB |
1724 | } |
1725 | ||
c46e7724 SS |
1726 | void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
1727 | { | |
1728 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1729 | int sta_id, tid, txq, index; | |
1730 | struct ieee80211_tx_info ba_info = {}; | |
1731 | struct iwl_mvm_ba_notif *ba_notif; | |
1732 | struct iwl_mvm_tid_data *tid_data; | |
1733 | struct iwl_mvm_sta *mvmsta; | |
1734 | ||
1735 | if (iwl_mvm_has_new_tx_api(mvm)) { | |
1736 | struct iwl_mvm_compressed_ba_notif *ba_res = | |
1737 | (void *)pkt->data; | |
1738 | ||
1739 | sta_id = ba_res->sta_id; | |
1740 | ba_info.status.ampdu_ack_len = (u8)le16_to_cpu(ba_res->done); | |
1741 | ba_info.status.ampdu_len = (u8)le16_to_cpu(ba_res->txed); | |
1742 | ba_info.status.tx_time = | |
1743 | (u16)le32_to_cpu(ba_res->wireless_time); | |
1744 | ba_info.status.status_driver_data[0] = | |
1745 | (void *)(uintptr_t)ba_res->reduced_txp; | |
1746 | ||
1747 | /* | |
1748 | * TODO: | |
1749 | * When supporting multi TID aggregations - we need to move | |
1750 | * next_reclaimed to be per TXQ and not per TID or handle it | |
1751 | * in a different way. | |
1752 | * This will go together with SN and AddBA offload and cannot | |
1753 | * be handled properly for now. | |
1754 | */ | |
1755 | WARN_ON(le16_to_cpu(ba_res->tfd_cnt) != 1); | |
1756 | iwl_mvm_tx_reclaim(mvm, sta_id, ba_res->ra_tid[0].tid, | |
1757 | (int)ba_res->tfd[0].q_num, | |
1758 | le16_to_cpu(ba_res->tfd[0].tfd_index), | |
1759 | &ba_info, le32_to_cpu(ba_res->tx_rate)); | |
1760 | ||
1761 | IWL_DEBUG_TX_REPLY(mvm, | |
1762 | "BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n", | |
1763 | sta_id, le32_to_cpu(ba_res->flags), | |
1764 | le16_to_cpu(ba_res->txed), | |
1765 | le16_to_cpu(ba_res->done)); | |
1766 | return; | |
1767 | } | |
1768 | ||
1769 | ba_notif = (void *)pkt->data; | |
1770 | sta_id = ba_notif->sta_id; | |
1771 | tid = ba_notif->tid; | |
1772 | /* "flow" corresponds to Tx queue */ | |
1773 | txq = le16_to_cpu(ba_notif->scd_flow); | |
1774 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1775 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1776 | index = le16_to_cpu(ba_notif->scd_ssn); | |
1777 | ||
1778 | rcu_read_lock(); | |
1779 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); | |
1780 | if (WARN_ON_ONCE(!mvmsta)) { | |
1781 | rcu_read_unlock(); | |
1782 | return; | |
1783 | } | |
1784 | ||
1785 | tid_data = &mvmsta->tid_data[tid]; | |
1786 | ||
1787 | ba_info.status.ampdu_ack_len = ba_notif->txed_2_done; | |
1788 | ba_info.status.ampdu_len = ba_notif->txed; | |
1789 | ba_info.status.tx_time = tid_data->tx_time; | |
1790 | ba_info.status.status_driver_data[0] = | |
1791 | (void *)(uintptr_t)ba_notif->reduced_txp; | |
1792 | ||
1793 | rcu_read_unlock(); | |
1794 | ||
1795 | iwl_mvm_tx_reclaim(mvm, sta_id, tid, txq, index, &ba_info, | |
1796 | tid_data->rate_n_flags); | |
1797 | ||
1798 | IWL_DEBUG_TX_REPLY(mvm, | |
1799 | "BA_NOTIFICATION Received from %pM, sta_id = %d\n", | |
1800 | (u8 *)&ba_notif->sta_addr_lo32, ba_notif->sta_id); | |
1801 | ||
1802 | IWL_DEBUG_TX_REPLY(mvm, | |
1803 | "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", | |
1804 | ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl), | |
1805 | le64_to_cpu(ba_notif->bitmap), txq, index, | |
1806 | ba_notif->txed, ba_notif->txed_2_done); | |
1807 | ||
1808 | IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n", | |
1809 | ba_notif->reduced_txp); | |
1810 | } | |
1811 | ||
fe92e32a EG |
1812 | /* |
1813 | * Note that there are transports that buffer frames before they reach | |
1814 | * the firmware. This means that after flush_tx_path is called, the | |
1815 | * queue might not be empty. The race-free way to handle this is to: | |
1816 | * 1) set the station as draining | |
1817 | * 2) flush the Tx path | |
1818 | * 3) wait for the transport queues to be empty | |
1819 | */ | |
5888a40c | 1820 | int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, u32 flags) |
8ca151b5 JB |
1821 | { |
1822 | int ret; | |
1823 | struct iwl_tx_path_flush_cmd flush_cmd = { | |
1824 | .queues_ctl = cpu_to_le32(tfd_msk), | |
1825 | .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH), | |
1826 | }; | |
1827 | ||
8ca151b5 JB |
1828 | ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags, |
1829 | sizeof(flush_cmd), &flush_cmd); | |
1830 | if (ret) | |
1831 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); | |
1832 | return ret; | |
1833 | } |