]>
Commit | Line | Data |
---|---|---|
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 | * | |
8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. | |
9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
10 | * Copyright(c) 2016 - 2017 Intel Deutschland GmbH | |
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 | |
27 | * in the file called COPYING. | |
28 | * | |
29 | * Contact Information: | |
30 | * Intel Linux Wireless <linuxwifi@intel.com> | |
31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
32 | * | |
33 | * BSD LICENSE | |
34 | * | |
35 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. | |
36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH | |
37 | * Copyright(c) 2016 - 2017 Intel Deutschland GmbH | |
38 | * All rights reserved. | |
39 | * | |
40 | * Redistribution and use in source and binary forms, with or without | |
41 | * modification, are permitted provided that the following conditions | |
42 | * are met: | |
43 | * | |
44 | * * Redistributions of source code must retain the above copyright | |
45 | * notice, this list of conditions and the following disclaimer. | |
46 | * * Redistributions in binary form must reproduce the above copyright | |
47 | * notice, this list of conditions and the following disclaimer in | |
48 | * the documentation and/or other materials provided with the | |
49 | * distribution. | |
50 | * * Neither the name Intel Corporation nor the names of its | |
51 | * contributors may be used to endorse or promote products derived | |
52 | * from this software without specific prior written permission. | |
53 | * | |
54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
65 | * | |
66 | *****************************************************************************/ | |
67 | #include <linux/ieee80211.h> | |
68 | #include <linux/etherdevice.h> | |
69 | #include <linux/tcp.h> | |
70 | #include <net/ip.h> | |
71 | #include <net/ipv6.h> | |
72 | ||
73 | #include "iwl-trans.h" | |
74 | #include "iwl-eeprom-parse.h" | |
75 | #include "mvm.h" | |
76 | #include "sta.h" | |
77 | ||
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->fwrt, NULL, trig)) | |
92 | return; | |
93 | ||
94 | if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid))) | |
95 | return; | |
96 | ||
97 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, | |
98 | "BAR sent to %pM, tid %d, ssn %d", | |
99 | addr, tid, ssn); | |
100 | } | |
101 | ||
102 | #define OPT_HDR(type, skb, off) \ | |
103 | (type *)(skb_network_header(skb) + (off)) | |
104 | ||
105 | static u16 iwl_mvm_tx_csum(struct iwl_mvm *mvm, struct sk_buff *skb, | |
106 | struct ieee80211_hdr *hdr, | |
107 | struct ieee80211_tx_info *info, | |
108 | u16 offload_assist) | |
109 | { | |
110 | #if IS_ENABLED(CONFIG_INET) | |
111 | u16 mh_len = ieee80211_hdrlen(hdr->frame_control); | |
112 | u8 protocol = 0; | |
113 | ||
114 | /* | |
115 | * Do not compute checksum if already computed or if transport will | |
116 | * compute it | |
117 | */ | |
118 | if (skb->ip_summed != CHECKSUM_PARTIAL || IWL_MVM_SW_TX_CSUM_OFFLOAD) | |
119 | goto out; | |
120 | ||
121 | /* We do not expect to be requested to csum stuff we do not support */ | |
122 | if (WARN_ONCE(!(mvm->hw->netdev_features & IWL_TX_CSUM_NETIF_FLAGS) || | |
123 | (skb->protocol != htons(ETH_P_IP) && | |
124 | skb->protocol != htons(ETH_P_IPV6)), | |
125 | "No support for requested checksum\n")) { | |
126 | skb_checksum_help(skb); | |
127 | goto out; | |
128 | } | |
129 | ||
130 | if (skb->protocol == htons(ETH_P_IP)) { | |
131 | protocol = ip_hdr(skb)->protocol; | |
132 | } else { | |
133 | #if IS_ENABLED(CONFIG_IPV6) | |
134 | struct ipv6hdr *ipv6h = | |
135 | (struct ipv6hdr *)skb_network_header(skb); | |
136 | unsigned int off = sizeof(*ipv6h); | |
137 | ||
138 | protocol = ipv6h->nexthdr; | |
139 | while (protocol != NEXTHDR_NONE && ipv6_ext_hdr(protocol)) { | |
140 | struct ipv6_opt_hdr *hp; | |
141 | ||
142 | /* only supported extension headers */ | |
143 | if (protocol != NEXTHDR_ROUTING && | |
144 | protocol != NEXTHDR_HOP && | |
145 | protocol != NEXTHDR_DEST) { | |
146 | skb_checksum_help(skb); | |
147 | goto out; | |
148 | } | |
149 | ||
150 | hp = OPT_HDR(struct ipv6_opt_hdr, skb, off); | |
151 | protocol = hp->nexthdr; | |
152 | off += ipv6_optlen(hp); | |
153 | } | |
154 | /* if we get here - protocol now should be TCP/UDP */ | |
155 | #endif | |
156 | } | |
157 | ||
158 | if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) { | |
159 | WARN_ON_ONCE(1); | |
160 | skb_checksum_help(skb); | |
161 | goto out; | |
162 | } | |
163 | ||
164 | /* enable L4 csum */ | |
165 | offload_assist |= BIT(TX_CMD_OFFLD_L4_EN); | |
166 | ||
167 | /* | |
168 | * Set offset to IP header (snap). | |
169 | * We don't support tunneling so no need to take care of inner header. | |
170 | * Size is in words. | |
171 | */ | |
172 | offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR); | |
173 | ||
174 | /* Do IPv4 csum for AMSDU only (no IP csum for Ipv6) */ | |
175 | if (skb->protocol == htons(ETH_P_IP) && | |
176 | (offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) { | |
177 | ip_hdr(skb)->check = 0; | |
178 | offload_assist |= BIT(TX_CMD_OFFLD_L3_EN); | |
179 | } | |
180 | ||
181 | /* reset UDP/TCP header csum */ | |
182 | if (protocol == IPPROTO_TCP) | |
183 | tcp_hdr(skb)->check = 0; | |
184 | else | |
185 | udp_hdr(skb)->check = 0; | |
186 | ||
187 | /* | |
188 | * mac header len should include IV, size is in words unless | |
189 | * the IV is added by the firmware like in WEP. | |
190 | * In new Tx API, the IV is always added by the firmware. | |
191 | */ | |
192 | if (!iwl_mvm_has_new_tx_api(mvm) && info->control.hw_key && | |
193 | info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP40 && | |
194 | info->control.hw_key->cipher != WLAN_CIPHER_SUITE_WEP104) | |
195 | mh_len += info->control.hw_key->iv_len; | |
196 | mh_len /= 2; | |
197 | offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE; | |
198 | ||
199 | out: | |
200 | #endif | |
201 | return offload_assist; | |
202 | } | |
203 | ||
204 | /* | |
205 | * Sets most of the Tx cmd's fields | |
206 | */ | |
207 | void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, | |
208 | struct iwl_tx_cmd *tx_cmd, | |
209 | struct ieee80211_tx_info *info, u8 sta_id) | |
210 | { | |
211 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
212 | __le16 fc = hdr->frame_control; | |
213 | u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags); | |
214 | u32 len = skb->len + FCS_LEN; | |
215 | u16 offload_assist = 0; | |
216 | u8 ac; | |
217 | ||
218 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
219 | tx_flags |= TX_CMD_FLG_ACK; | |
220 | else | |
221 | tx_flags &= ~TX_CMD_FLG_ACK; | |
222 | ||
223 | if (ieee80211_is_probe_resp(fc)) | |
224 | tx_flags |= TX_CMD_FLG_TSF; | |
225 | ||
226 | if (ieee80211_has_morefrags(fc)) | |
227 | tx_flags |= TX_CMD_FLG_MORE_FRAG; | |
228 | ||
229 | if (ieee80211_is_data_qos(fc)) { | |
230 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
231 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
232 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
233 | if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) | |
234 | offload_assist |= BIT(TX_CMD_OFFLD_AMSDU); | |
235 | } else if (ieee80211_is_back_req(fc)) { | |
236 | struct ieee80211_bar *bar = (void *)skb->data; | |
237 | u16 control = le16_to_cpu(bar->control); | |
238 | u16 ssn = le16_to_cpu(bar->start_seq_num); | |
239 | ||
240 | tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR; | |
241 | tx_cmd->tid_tspec = (control & | |
242 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> | |
243 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
244 | WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT); | |
245 | iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec, | |
246 | ssn); | |
247 | } else { | |
248 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; | |
249 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) | |
250 | tx_flags |= TX_CMD_FLG_SEQ_CTL; | |
251 | else | |
252 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
253 | } | |
254 | ||
255 | /* Default to 0 (BE) when tid_spec is set to IWL_TID_NON_QOS */ | |
256 | if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT) | |
257 | ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; | |
258 | else | |
259 | ac = tid_to_mac80211_ac[0]; | |
260 | ||
261 | tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) << | |
262 | TX_CMD_FLG_BT_PRIO_POS; | |
263 | ||
264 | if (ieee80211_is_mgmt(fc)) { | |
265 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
266 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC); | |
267 | else if (ieee80211_is_action(fc)) | |
268 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); | |
269 | else | |
270 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); | |
271 | ||
272 | /* The spec allows Action frames in A-MPDU, we don't support | |
273 | * it | |
274 | */ | |
275 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU); | |
276 | } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) { | |
277 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); | |
278 | } else { | |
279 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); | |
280 | } | |
281 | ||
282 | if (ieee80211_is_data(fc) && len > mvm->rts_threshold && | |
283 | !is_multicast_ether_addr(ieee80211_get_DA(hdr))) | |
284 | tx_flags |= TX_CMD_FLG_PROT_REQUIRE; | |
285 | ||
286 | if (fw_has_capa(&mvm->fw->ucode_capa, | |
287 | IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) && | |
288 | ieee80211_action_contains_tpc(skb)) | |
289 | tx_flags |= TX_CMD_FLG_WRITE_TX_POWER; | |
290 | ||
291 | tx_cmd->tx_flags = cpu_to_le32(tx_flags); | |
292 | /* Total # bytes to be transmitted - PCIe code will adjust for A-MSDU */ | |
293 | tx_cmd->len = cpu_to_le16((u16)skb->len); | |
294 | tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
295 | tx_cmd->sta_id = sta_id; | |
296 | ||
297 | /* padding is inserted later in transport */ | |
298 | if (ieee80211_hdrlen(fc) % 4 && | |
299 | !(offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) | |
300 | offload_assist |= BIT(TX_CMD_OFFLD_PAD); | |
301 | ||
302 | tx_cmd->offload_assist |= | |
303 | cpu_to_le16(iwl_mvm_tx_csum(mvm, skb, hdr, info, | |
304 | offload_assist)); | |
305 | } | |
306 | ||
307 | static u32 iwl_mvm_get_tx_rate(struct iwl_mvm *mvm, | |
308 | struct ieee80211_tx_info *info, | |
309 | struct ieee80211_sta *sta) | |
310 | { | |
311 | int rate_idx; | |
312 | u8 rate_plcp; | |
313 | u32 rate_flags; | |
314 | ||
315 | /* HT rate doesn't make sense for a non data frame */ | |
316 | WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS, | |
317 | "Got an HT rate (flags:0x%x/mcs:%d) for a non data frame\n", | |
318 | info->control.rates[0].flags, | |
319 | info->control.rates[0].idx); | |
320 | ||
321 | rate_idx = info->control.rates[0].idx; | |
322 | /* if the rate isn't a well known legacy rate, take the lowest one */ | |
323 | if (rate_idx < 0 || rate_idx >= IWL_RATE_COUNT_LEGACY) | |
324 | rate_idx = rate_lowest_index( | |
325 | &mvm->nvm_data->bands[info->band], sta); | |
326 | ||
327 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ | |
328 | if (info->band == NL80211_BAND_5GHZ) | |
329 | rate_idx += IWL_FIRST_OFDM_RATE; | |
330 | ||
331 | /* For 2.4 GHZ band, check that there is no need to remap */ | |
332 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
333 | ||
334 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
335 | rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx); | |
336 | ||
337 | if (info->band == NL80211_BAND_2GHZ && | |
338 | !iwl_mvm_bt_coex_is_shared_ant_avail(mvm)) | |
339 | rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS; | |
340 | else | |
341 | rate_flags = | |
342 | BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; | |
343 | ||
344 | /* Set CCK flag as needed */ | |
345 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
346 | rate_flags |= RATE_MCS_CCK_MSK; | |
347 | ||
348 | return (u32)rate_plcp | rate_flags; | |
349 | } | |
350 | ||
351 | /* | |
352 | * Sets the fields in the Tx cmd that are rate related | |
353 | */ | |
354 | void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd, | |
355 | struct ieee80211_tx_info *info, | |
356 | struct ieee80211_sta *sta, __le16 fc) | |
357 | { | |
358 | /* Set retry limit on RTS packets */ | |
359 | tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT; | |
360 | ||
361 | /* Set retry limit on DATA packets and Probe Responses*/ | |
362 | if (ieee80211_is_probe_resp(fc)) { | |
363 | tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT; | |
364 | tx_cmd->rts_retry_limit = | |
365 | min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit); | |
366 | } else if (ieee80211_is_back_req(fc)) { | |
367 | tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT; | |
368 | } else { | |
369 | tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
370 | } | |
371 | ||
372 | /* | |
373 | * for data packets, rate info comes from the table inside the fw. This | |
374 | * table is controlled by LINK_QUALITY commands | |
375 | */ | |
376 | ||
377 | if (ieee80211_is_data(fc) && sta) { | |
378 | tx_cmd->initial_rate_index = 0; | |
379 | tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); | |
380 | return; | |
381 | } else if (ieee80211_is_back_req(fc)) { | |
382 | tx_cmd->tx_flags |= | |
383 | cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); | |
384 | } | |
385 | ||
386 | mvm->mgmt_last_antenna_idx = | |
387 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), | |
388 | mvm->mgmt_last_antenna_idx); | |
389 | ||
390 | /* Set the rate in the TX cmd */ | |
391 | tx_cmd->rate_n_flags = cpu_to_le32(iwl_mvm_get_tx_rate(mvm, info, sta)); | |
392 | } | |
393 | ||
394 | static inline void iwl_mvm_set_tx_cmd_pn(struct ieee80211_tx_info *info, | |
395 | u8 *crypto_hdr) | |
396 | { | |
397 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
398 | u64 pn; | |
399 | ||
400 | pn = atomic64_inc_return(&keyconf->tx_pn); | |
401 | crypto_hdr[0] = pn; | |
402 | crypto_hdr[2] = 0; | |
403 | crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6); | |
404 | crypto_hdr[1] = pn >> 8; | |
405 | crypto_hdr[4] = pn >> 16; | |
406 | crypto_hdr[5] = pn >> 24; | |
407 | crypto_hdr[6] = pn >> 32; | |
408 | crypto_hdr[7] = pn >> 40; | |
409 | } | |
410 | ||
411 | /* | |
412 | * Sets the fields in the Tx cmd that are crypto related | |
413 | */ | |
414 | static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm, | |
415 | struct ieee80211_tx_info *info, | |
416 | struct iwl_tx_cmd *tx_cmd, | |
417 | struct sk_buff *skb_frag, | |
418 | int hdrlen) | |
419 | { | |
420 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
421 | u8 *crypto_hdr = skb_frag->data + hdrlen; | |
422 | u64 pn; | |
423 | ||
424 | switch (keyconf->cipher) { | |
425 | case WLAN_CIPHER_SUITE_CCMP: | |
426 | case WLAN_CIPHER_SUITE_CCMP_256: | |
427 | iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd); | |
428 | iwl_mvm_set_tx_cmd_pn(info, crypto_hdr); | |
429 | break; | |
430 | ||
431 | case WLAN_CIPHER_SUITE_TKIP: | |
432 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; | |
433 | pn = atomic64_inc_return(&keyconf->tx_pn); | |
434 | ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn); | |
435 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); | |
436 | break; | |
437 | ||
438 | case WLAN_CIPHER_SUITE_WEP104: | |
439 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
440 | /* fall through */ | |
441 | case WLAN_CIPHER_SUITE_WEP40: | |
442 | tx_cmd->sec_ctl |= TX_CMD_SEC_WEP | | |
443 | ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) & | |
444 | TX_CMD_SEC_WEP_KEY_IDX_MSK); | |
445 | ||
446 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); | |
447 | break; | |
448 | case WLAN_CIPHER_SUITE_GCMP: | |
449 | case WLAN_CIPHER_SUITE_GCMP_256: | |
450 | /* TODO: Taking the key from the table might introduce a race | |
451 | * when PTK rekeying is done, having an old packets with a PN | |
452 | * based on the old key but the message encrypted with a new | |
453 | * one. | |
454 | * Need to handle this. | |
455 | */ | |
456 | tx_cmd->sec_ctl |= TX_CMD_SEC_GCMP | TX_CMD_SEC_KEY_FROM_TABLE; | |
457 | tx_cmd->key[0] = keyconf->hw_key_idx; | |
458 | iwl_mvm_set_tx_cmd_pn(info, crypto_hdr); | |
459 | break; | |
460 | default: | |
461 | tx_cmd->sec_ctl |= TX_CMD_SEC_EXT; | |
462 | } | |
463 | } | |
464 | ||
465 | /* | |
466 | * Allocates and sets the Tx cmd the driver data pointers in the skb | |
467 | */ | |
468 | static struct iwl_device_cmd * | |
469 | iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, | |
470 | struct ieee80211_tx_info *info, int hdrlen, | |
471 | struct ieee80211_sta *sta, u8 sta_id) | |
472 | { | |
473 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
474 | struct iwl_device_cmd *dev_cmd; | |
475 | struct iwl_tx_cmd *tx_cmd; | |
476 | ||
477 | dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans); | |
478 | ||
479 | if (unlikely(!dev_cmd)) | |
480 | return NULL; | |
481 | ||
482 | /* Make sure we zero enough of dev_cmd */ | |
483 | BUILD_BUG_ON(sizeof(struct iwl_tx_cmd_gen2) > sizeof(*tx_cmd)); | |
484 | ||
485 | memset(dev_cmd, 0, sizeof(dev_cmd->hdr) + sizeof(*tx_cmd)); | |
486 | dev_cmd->hdr.cmd = TX_CMD; | |
487 | ||
488 | if (iwl_mvm_has_new_tx_api(mvm)) { | |
489 | struct iwl_tx_cmd_gen2 *cmd = (void *)dev_cmd->payload; | |
490 | u16 offload_assist = 0; | |
491 | ||
492 | if (ieee80211_is_data_qos(hdr->frame_control)) { | |
493 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
494 | ||
495 | if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) | |
496 | offload_assist |= BIT(TX_CMD_OFFLD_AMSDU); | |
497 | } | |
498 | ||
499 | offload_assist = iwl_mvm_tx_csum(mvm, skb, hdr, info, | |
500 | offload_assist); | |
501 | ||
502 | /* padding is inserted later in transport */ | |
503 | if (ieee80211_hdrlen(hdr->frame_control) % 4 && | |
504 | !(offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) | |
505 | offload_assist |= BIT(TX_CMD_OFFLD_PAD); | |
506 | ||
507 | cmd->offload_assist |= cpu_to_le16(offload_assist); | |
508 | ||
509 | /* Total # bytes to be transmitted */ | |
510 | cmd->len = cpu_to_le16((u16)skb->len); | |
511 | ||
512 | /* Copy MAC header from skb into command buffer */ | |
513 | memcpy(cmd->hdr, hdr, hdrlen); | |
514 | ||
515 | if (!info->control.hw_key) | |
516 | cmd->flags |= cpu_to_le32(IWL_TX_FLAGS_ENCRYPT_DIS); | |
517 | ||
518 | /* For data packets rate info comes from the fw */ | |
519 | if (ieee80211_is_data(hdr->frame_control) && sta) | |
520 | goto out; | |
521 | ||
522 | cmd->flags |= cpu_to_le32(IWL_TX_FLAGS_CMD_RATE); | |
523 | cmd->rate_n_flags = | |
524 | cpu_to_le32(iwl_mvm_get_tx_rate(mvm, info, sta)); | |
525 | ||
526 | goto out; | |
527 | } | |
528 | ||
529 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; | |
530 | ||
531 | if (info->control.hw_key) | |
532 | iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen); | |
533 | ||
534 | iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id); | |
535 | ||
536 | iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control); | |
537 | ||
538 | /* Copy MAC header from skb into command buffer */ | |
539 | memcpy(tx_cmd->hdr, hdr, hdrlen); | |
540 | ||
541 | out: | |
542 | return dev_cmd; | |
543 | } | |
544 | ||
545 | static void iwl_mvm_skb_prepare_status(struct sk_buff *skb, | |
546 | struct iwl_device_cmd *cmd) | |
547 | { | |
548 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); | |
549 | ||
550 | memset(&skb_info->status, 0, sizeof(skb_info->status)); | |
551 | memset(skb_info->driver_data, 0, sizeof(skb_info->driver_data)); | |
552 | ||
553 | skb_info->driver_data[1] = cmd; | |
554 | } | |
555 | ||
556 | static int iwl_mvm_get_ctrl_vif_queue(struct iwl_mvm *mvm, | |
557 | struct ieee80211_tx_info *info, __le16 fc) | |
558 | { | |
559 | struct iwl_mvm_vif *mvmvif; | |
560 | ||
561 | mvmvif = iwl_mvm_vif_from_mac80211(info->control.vif); | |
562 | ||
563 | switch (info->control.vif->type) { | |
564 | case NL80211_IFTYPE_AP: | |
565 | case NL80211_IFTYPE_ADHOC: | |
566 | /* | |
567 | * Non-bufferable frames use the broadcast station, thus they | |
568 | * use the probe queue. | |
569 | * Also take care of the case where we send a deauth to a | |
570 | * station that we don't have, or similarly an association | |
571 | * response (with non-success status) for a station we can't | |
572 | * accept. | |
573 | * Also, disassociate frames might happen, particular with | |
574 | * reason 7 ("Class 3 frame received from nonassociated STA"). | |
575 | */ | |
576 | if (ieee80211_is_mgmt(fc) && | |
577 | (!ieee80211_is_bufferable_mmpdu(fc) || | |
578 | ieee80211_is_deauth(fc) || ieee80211_is_disassoc(fc))) | |
579 | return mvm->probe_queue; | |
580 | if (info->hw_queue == info->control.vif->cab_queue) | |
581 | return mvmvif->cab_queue; | |
582 | ||
583 | WARN_ONCE(info->control.vif->type != NL80211_IFTYPE_ADHOC, | |
584 | "fc=0x%02x", le16_to_cpu(fc)); | |
585 | return mvm->probe_queue; | |
586 | case NL80211_IFTYPE_P2P_DEVICE: | |
587 | if (ieee80211_is_mgmt(fc)) | |
588 | return mvm->p2p_dev_queue; | |
589 | if (info->hw_queue == info->control.vif->cab_queue) | |
590 | return mvmvif->cab_queue; | |
591 | ||
592 | WARN_ON_ONCE(1); | |
593 | return mvm->p2p_dev_queue; | |
594 | default: | |
595 | WARN_ONCE(1, "Not a ctrl vif, no available queue\n"); | |
596 | return -1; | |
597 | } | |
598 | } | |
599 | ||
600 | int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb) | |
601 | { | |
602 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
603 | struct ieee80211_tx_info *skb_info = IEEE80211_SKB_CB(skb); | |
604 | struct ieee80211_tx_info info; | |
605 | struct iwl_device_cmd *dev_cmd; | |
606 | u8 sta_id; | |
607 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
608 | int queue; | |
609 | ||
610 | /* IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets that can be used | |
611 | * in 2 different types of vifs, P2P & STATION. P2P uses the offchannel | |
612 | * queue. STATION (HS2.0) uses the auxiliary context of the FW, | |
613 | * and hence needs to be sent on the aux queue | |
614 | */ | |
615 | if (skb_info->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && | |
616 | skb_info->control.vif->type == NL80211_IFTYPE_STATION) | |
617 | skb_info->hw_queue = mvm->aux_queue; | |
618 | ||
619 | memcpy(&info, skb->cb, sizeof(info)); | |
620 | ||
621 | if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_AMPDU)) | |
622 | return -1; | |
623 | ||
624 | if (WARN_ON_ONCE(info.flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && | |
625 | (!info.control.vif || | |
626 | info.hw_queue != info.control.vif->cab_queue))) | |
627 | return -1; | |
628 | ||
629 | queue = info.hw_queue; | |
630 | ||
631 | /* | |
632 | * If the interface on which the frame is sent is the P2P_DEVICE | |
633 | * or an AP/GO interface use the broadcast station associated | |
634 | * with it; otherwise if the interface is a managed interface | |
635 | * use the AP station associated with it for multicast traffic | |
636 | * (this is not possible for unicast packets as a TLDS discovery | |
637 | * response are sent without a station entry); otherwise use the | |
638 | * AUX station. | |
639 | */ | |
640 | sta_id = mvm->aux_sta.sta_id; | |
641 | if (info.control.vif) { | |
642 | struct iwl_mvm_vif *mvmvif = | |
643 | iwl_mvm_vif_from_mac80211(info.control.vif); | |
644 | ||
645 | if (info.control.vif->type == NL80211_IFTYPE_P2P_DEVICE || | |
646 | info.control.vif->type == NL80211_IFTYPE_AP || | |
647 | info.control.vif->type == NL80211_IFTYPE_ADHOC) { | |
648 | sta_id = mvmvif->bcast_sta.sta_id; | |
649 | queue = iwl_mvm_get_ctrl_vif_queue(mvm, &info, | |
650 | hdr->frame_control); | |
651 | if (queue < 0) | |
652 | return -1; | |
653 | } else if (info.control.vif->type == NL80211_IFTYPE_STATION && | |
654 | is_multicast_ether_addr(hdr->addr1)) { | |
655 | u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id); | |
656 | ||
657 | if (ap_sta_id != IWL_MVM_INVALID_STA) | |
658 | sta_id = ap_sta_id; | |
659 | } else if (info.control.vif->type == NL80211_IFTYPE_MONITOR) { | |
660 | queue = mvm->snif_queue; | |
661 | sta_id = mvm->snif_sta.sta_id; | |
662 | } | |
663 | } | |
664 | ||
665 | IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, queue); | |
666 | ||
667 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, &info, hdrlen, NULL, sta_id); | |
668 | if (!dev_cmd) | |
669 | return -1; | |
670 | ||
671 | /* From now on, we cannot access info->control */ | |
672 | iwl_mvm_skb_prepare_status(skb, dev_cmd); | |
673 | ||
674 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, queue)) { | |
675 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
676 | return -1; | |
677 | } | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
682 | #ifdef CONFIG_INET | |
683 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
684 | struct ieee80211_tx_info *info, | |
685 | struct ieee80211_sta *sta, | |
686 | struct sk_buff_head *mpdus_skb) | |
687 | { | |
688 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
689 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
690 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
691 | struct sk_buff *tmp, *next; | |
692 | char cb[sizeof(skb->cb)]; | |
693 | unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len; | |
694 | bool ipv4 = (skb->protocol == htons(ETH_P_IP)); | |
695 | u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0; | |
696 | u16 snap_ip_tcp, pad, i = 0; | |
697 | unsigned int dbg_max_amsdu_len; | |
698 | netdev_features_t netdev_features = NETIF_F_CSUM_MASK | NETIF_F_SG; | |
699 | u8 *qc, tid, txf; | |
700 | ||
701 | snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) + | |
702 | tcp_hdrlen(skb); | |
703 | ||
704 | dbg_max_amsdu_len = READ_ONCE(mvm->max_amsdu_len); | |
705 | ||
706 | if (!sta->max_amsdu_len || | |
707 | !ieee80211_is_data_qos(hdr->frame_control) || | |
708 | (!mvmsta->tlc_amsdu && !dbg_max_amsdu_len)) { | |
709 | num_subframes = 1; | |
710 | pad = 0; | |
711 | goto segment; | |
712 | } | |
713 | ||
714 | qc = ieee80211_get_qos_ctl(hdr); | |
715 | tid = *qc & IEEE80211_QOS_CTL_TID_MASK; | |
716 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
717 | return -EINVAL; | |
718 | ||
719 | /* | |
720 | * Do not build AMSDU for IPv6 with extension headers. | |
721 | * ask stack to segment and checkum the generated MPDUs for us. | |
722 | */ | |
723 | if (skb->protocol == htons(ETH_P_IPV6) && | |
724 | ((struct ipv6hdr *)skb_network_header(skb))->nexthdr != | |
725 | IPPROTO_TCP) { | |
726 | num_subframes = 1; | |
727 | pad = 0; | |
728 | netdev_features &= ~NETIF_F_CSUM_MASK; | |
729 | goto segment; | |
730 | } | |
731 | ||
732 | /* | |
733 | * No need to lock amsdu_in_ampdu_allowed since it can't be modified | |
734 | * during an BA session. | |
735 | */ | |
736 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
737 | !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) { | |
738 | num_subframes = 1; | |
739 | pad = 0; | |
740 | goto segment; | |
741 | } | |
742 | ||
743 | max_amsdu_len = sta->max_amsdu_len; | |
744 | ||
745 | /* the Tx FIFO to which this A-MSDU will be routed */ | |
746 | txf = iwl_mvm_mac_ac_to_tx_fifo(mvm, tid_to_mac80211_ac[tid]); | |
747 | ||
748 | /* | |
749 | * Don't send an AMSDU that will be longer than the TXF. | |
750 | * Add a security margin of 256 for the TX command + headers. | |
751 | * We also want to have the start of the next packet inside the | |
752 | * fifo to be able to send bursts. | |
753 | */ | |
754 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
755 | mvm->fwrt.smem_cfg.lmac[0].txfifo_size[txf] - | |
756 | 256); | |
757 | ||
758 | if (unlikely(dbg_max_amsdu_len)) | |
759 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
760 | dbg_max_amsdu_len); | |
761 | ||
762 | /* | |
763 | * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not | |
764 | * supported. This is a spec requirement (IEEE 802.11-2015 | |
765 | * section 8.7.3 NOTE 3). | |
766 | */ | |
767 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
768 | !sta->vht_cap.vht_supported) | |
769 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095); | |
770 | ||
771 | /* Sub frame header + SNAP + IP header + TCP header + MSS */ | |
772 | subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss; | |
773 | pad = (4 - subf_len) & 0x3; | |
774 | ||
775 | /* | |
776 | * If we have N subframes in the A-MSDU, then the A-MSDU's size is | |
777 | * N * subf_len + (N - 1) * pad. | |
778 | */ | |
779 | num_subframes = (max_amsdu_len + pad) / (subf_len + pad); | |
780 | if (num_subframes > 1) | |
781 | *qc |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
782 | ||
783 | tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
784 | tcp_hdrlen(skb) + skb->data_len; | |
785 | ||
786 | /* | |
787 | * Make sure we have enough TBs for the A-MSDU: | |
788 | * 2 for each subframe | |
789 | * 1 more for each fragment | |
790 | * 1 more for the potential data in the header | |
791 | */ | |
792 | num_subframes = | |
793 | min_t(unsigned int, num_subframes, | |
794 | (mvm->trans->max_skb_frags - 1 - | |
795 | skb_shinfo(skb)->nr_frags) / 2); | |
796 | ||
797 | /* This skb fits in one single A-MSDU */ | |
798 | if (num_subframes * mss >= tcp_payload_len) { | |
799 | __skb_queue_tail(mpdus_skb, skb); | |
800 | return 0; | |
801 | } | |
802 | ||
803 | /* | |
804 | * Trick the segmentation function to make it | |
805 | * create SKBs that can fit into one A-MSDU. | |
806 | */ | |
807 | segment: | |
808 | skb_shinfo(skb)->gso_size = num_subframes * mss; | |
809 | memcpy(cb, skb->cb, sizeof(cb)); | |
810 | ||
811 | next = skb_gso_segment(skb, netdev_features); | |
812 | skb_shinfo(skb)->gso_size = mss; | |
813 | if (WARN_ON_ONCE(IS_ERR(next))) | |
814 | return -EINVAL; | |
815 | else if (next) | |
816 | consume_skb(skb); | |
817 | ||
818 | while (next) { | |
819 | tmp = next; | |
820 | next = tmp->next; | |
821 | ||
822 | memcpy(tmp->cb, cb, sizeof(tmp->cb)); | |
823 | /* | |
824 | * Compute the length of all the data added for the A-MSDU. | |
825 | * This will be used to compute the length to write in the TX | |
826 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
827 | * ETH header for n subframes. | |
828 | */ | |
829 | tcp_payload_len = skb_tail_pointer(tmp) - | |
830 | skb_transport_header(tmp) - | |
831 | tcp_hdrlen(tmp) + tmp->data_len; | |
832 | ||
833 | if (ipv4) | |
834 | ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes); | |
835 | ||
836 | if (tcp_payload_len > mss) { | |
837 | skb_shinfo(tmp)->gso_size = mss; | |
838 | } else { | |
839 | if (ieee80211_is_data_qos(hdr->frame_control)) { | |
840 | qc = ieee80211_get_qos_ctl((void *)tmp->data); | |
841 | ||
842 | if (ipv4) | |
843 | ip_send_check(ip_hdr(tmp)); | |
844 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
845 | } | |
846 | skb_shinfo(tmp)->gso_size = 0; | |
847 | } | |
848 | ||
849 | tmp->prev = NULL; | |
850 | tmp->next = NULL; | |
851 | ||
852 | __skb_queue_tail(mpdus_skb, tmp); | |
853 | i++; | |
854 | } | |
855 | ||
856 | return 0; | |
857 | } | |
858 | #else /* CONFIG_INET */ | |
859 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
860 | struct ieee80211_tx_info *info, | |
861 | struct ieee80211_sta *sta, | |
862 | struct sk_buff_head *mpdus_skb) | |
863 | { | |
864 | /* Impossible to get TSO with CONFIG_INET */ | |
865 | WARN_ON(1); | |
866 | ||
867 | return -1; | |
868 | } | |
869 | #endif | |
870 | ||
871 | static void iwl_mvm_tx_add_stream(struct iwl_mvm *mvm, | |
872 | struct iwl_mvm_sta *mvm_sta, u8 tid, | |
873 | struct sk_buff *skb) | |
874 | { | |
875 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
876 | u8 mac_queue = info->hw_queue; | |
877 | struct sk_buff_head *deferred_tx_frames; | |
878 | ||
879 | lockdep_assert_held(&mvm_sta->lock); | |
880 | ||
881 | mvm_sta->deferred_traffic_tid_map |= BIT(tid); | |
882 | set_bit(mvm_sta->sta_id, mvm->sta_deferred_frames); | |
883 | ||
884 | deferred_tx_frames = &mvm_sta->tid_data[tid].deferred_tx_frames; | |
885 | ||
886 | skb_queue_tail(deferred_tx_frames, skb); | |
887 | ||
888 | /* | |
889 | * The first deferred frame should've stopped the MAC queues, so we | |
890 | * should never get a second deferred frame for the RA/TID. | |
891 | */ | |
892 | if (!WARN(skb_queue_len(deferred_tx_frames) != 1, | |
893 | "RATID %d/%d has %d deferred frames\n", mvm_sta->sta_id, tid, | |
894 | skb_queue_len(deferred_tx_frames))) { | |
895 | iwl_mvm_stop_mac_queues(mvm, BIT(mac_queue)); | |
896 | schedule_work(&mvm->add_stream_wk); | |
897 | } | |
898 | } | |
899 | ||
900 | /* Check if there are any timed-out TIDs on a given shared TXQ */ | |
901 | static bool iwl_mvm_txq_should_update(struct iwl_mvm *mvm, int txq_id) | |
902 | { | |
903 | unsigned long queue_tid_bitmap = mvm->queue_info[txq_id].tid_bitmap; | |
904 | unsigned long now = jiffies; | |
905 | int tid; | |
906 | ||
907 | if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) | |
908 | return false; | |
909 | ||
910 | for_each_set_bit(tid, &queue_tid_bitmap, IWL_MAX_TID_COUNT + 1) { | |
911 | if (time_before(mvm->queue_info[txq_id].last_frame_time[tid] + | |
912 | IWL_MVM_DQA_QUEUE_TIMEOUT, now)) | |
913 | return true; | |
914 | } | |
915 | ||
916 | return false; | |
917 | } | |
918 | ||
919 | /* | |
920 | * Sets the fields in the Tx cmd that are crypto related | |
921 | */ | |
922 | static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb, | |
923 | struct ieee80211_tx_info *info, | |
924 | struct ieee80211_sta *sta) | |
925 | { | |
926 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
927 | struct iwl_mvm_sta *mvmsta; | |
928 | struct iwl_device_cmd *dev_cmd; | |
929 | __le16 fc; | |
930 | u16 seq_number = 0; | |
931 | u8 tid = IWL_MAX_TID_COUNT; | |
932 | u16 txq_id = info->hw_queue; | |
933 | bool is_ampdu = false; | |
934 | int hdrlen; | |
935 | ||
936 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
937 | fc = hdr->frame_control; | |
938 | hdrlen = ieee80211_hdrlen(fc); | |
939 | ||
940 | if (WARN_ON_ONCE(!mvmsta)) | |
941 | return -1; | |
942 | ||
943 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA)) | |
944 | return -1; | |
945 | ||
946 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, info, hdrlen, | |
947 | sta, mvmsta->sta_id); | |
948 | if (!dev_cmd) | |
949 | goto drop; | |
950 | ||
951 | /* | |
952 | * we handle that entirely ourselves -- for uAPSD the firmware | |
953 | * will always send a notification, and for PS-Poll responses | |
954 | * we'll notify mac80211 when getting frame status | |
955 | */ | |
956 | info->flags &= ~IEEE80211_TX_STATUS_EOSP; | |
957 | ||
958 | spin_lock(&mvmsta->lock); | |
959 | ||
960 | /* nullfunc frames should go to the MGMT queue regardless of QOS, | |
961 | * the condition of !ieee80211_is_qos_nullfunc(fc) keeps the default | |
962 | * assignment of MGMT TID | |
963 | */ | |
964 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { | |
965 | u8 *qc = NULL; | |
966 | qc = ieee80211_get_qos_ctl(hdr); | |
967 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
968 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
969 | goto drop_unlock_sta; | |
970 | ||
971 | is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU; | |
972 | if (WARN_ON_ONCE(is_ampdu && | |
973 | mvmsta->tid_data[tid].state != IWL_AGG_ON)) | |
974 | goto drop_unlock_sta; | |
975 | ||
976 | seq_number = mvmsta->tid_data[tid].seq_number; | |
977 | seq_number &= IEEE80211_SCTL_SEQ; | |
978 | ||
979 | if (!iwl_mvm_has_new_tx_api(mvm)) { | |
980 | struct iwl_tx_cmd *tx_cmd = (void *)dev_cmd->payload; | |
981 | ||
982 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
983 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
984 | /* update the tx_cmd hdr as it was already copied */ | |
985 | tx_cmd->hdr->seq_ctrl = hdr->seq_ctrl; | |
986 | } | |
987 | } | |
988 | ||
989 | txq_id = mvmsta->tid_data[tid].txq_id; | |
990 | ||
991 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM); | |
992 | ||
993 | /* Check if TXQ needs to be allocated or re-activated */ | |
994 | if (unlikely(txq_id == IWL_MVM_INVALID_QUEUE || | |
995 | !mvmsta->tid_data[tid].is_tid_active)) { | |
996 | /* If TXQ needs to be allocated... */ | |
997 | if (txq_id == IWL_MVM_INVALID_QUEUE) { | |
998 | iwl_mvm_tx_add_stream(mvm, mvmsta, tid, skb); | |
999 | ||
1000 | /* | |
1001 | * The frame is now deferred, and the worker scheduled | |
1002 | * will re-allocate it, so we can free it for now. | |
1003 | */ | |
1004 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
1005 | spin_unlock(&mvmsta->lock); | |
1006 | return 0; | |
1007 | } | |
1008 | ||
1009 | /* queue should always be active in new TX path */ | |
1010 | WARN_ON(iwl_mvm_has_new_tx_api(mvm)); | |
1011 | ||
1012 | /* If we are here - TXQ exists and needs to be re-activated */ | |
1013 | spin_lock(&mvm->queue_info_lock); | |
1014 | mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY; | |
1015 | mvmsta->tid_data[tid].is_tid_active = true; | |
1016 | spin_unlock(&mvm->queue_info_lock); | |
1017 | ||
1018 | IWL_DEBUG_TX_QUEUES(mvm, "Re-activating queue %d for TX\n", | |
1019 | txq_id); | |
1020 | } | |
1021 | ||
1022 | if (!iwl_mvm_has_new_tx_api(mvm)) { | |
1023 | /* Keep track of the time of the last frame for this RA/TID */ | |
1024 | mvm->queue_info[txq_id].last_frame_time[tid] = jiffies; | |
1025 | ||
1026 | /* | |
1027 | * If we have timed-out TIDs - schedule the worker that will | |
1028 | * reconfig the queues and update them | |
1029 | * | |
1030 | * Note that the mvm->queue_info_lock isn't being taken here in | |
1031 | * order to not serialize the TX flow. This isn't dangerous | |
1032 | * because scheduling mvm->add_stream_wk can't ruin the state, | |
1033 | * and if we DON'T schedule it due to some race condition then | |
1034 | * next TX we get here we will. | |
1035 | */ | |
1036 | if (unlikely(mvm->queue_info[txq_id].status == | |
1037 | IWL_MVM_QUEUE_SHARED && | |
1038 | iwl_mvm_txq_should_update(mvm, txq_id))) | |
1039 | schedule_work(&mvm->add_stream_wk); | |
1040 | } | |
1041 | ||
1042 | IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id, | |
1043 | tid, txq_id, IEEE80211_SEQ_TO_SN(seq_number)); | |
1044 | ||
1045 | /* From now on, we cannot access info->control */ | |
1046 | iwl_mvm_skb_prepare_status(skb, dev_cmd); | |
1047 | ||
1048 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id)) | |
1049 | goto drop_unlock_sta; | |
1050 | ||
1051 | if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc)) | |
1052 | mvmsta->tid_data[tid].seq_number = seq_number + 0x10; | |
1053 | ||
1054 | spin_unlock(&mvmsta->lock); | |
1055 | ||
1056 | return 0; | |
1057 | ||
1058 | drop_unlock_sta: | |
1059 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
1060 | spin_unlock(&mvmsta->lock); | |
1061 | drop: | |
1062 | return -1; | |
1063 | } | |
1064 | ||
1065 | int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, | |
1066 | struct ieee80211_sta *sta) | |
1067 | { | |
1068 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1069 | struct ieee80211_tx_info info; | |
1070 | struct sk_buff_head mpdus_skbs; | |
1071 | unsigned int payload_len; | |
1072 | int ret; | |
1073 | ||
1074 | if (WARN_ON_ONCE(!mvmsta)) | |
1075 | return -1; | |
1076 | ||
1077 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA)) | |
1078 | return -1; | |
1079 | ||
1080 | memcpy(&info, skb->cb, sizeof(info)); | |
1081 | ||
1082 | if (!skb_is_gso(skb)) | |
1083 | return iwl_mvm_tx_mpdu(mvm, skb, &info, sta); | |
1084 | ||
1085 | payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
1086 | tcp_hdrlen(skb) + skb->data_len; | |
1087 | ||
1088 | if (payload_len <= skb_shinfo(skb)->gso_size) | |
1089 | return iwl_mvm_tx_mpdu(mvm, skb, &info, sta); | |
1090 | ||
1091 | __skb_queue_head_init(&mpdus_skbs); | |
1092 | ||
1093 | ret = iwl_mvm_tx_tso(mvm, skb, &info, sta, &mpdus_skbs); | |
1094 | if (ret) | |
1095 | return ret; | |
1096 | ||
1097 | if (WARN_ON(skb_queue_empty(&mpdus_skbs))) | |
1098 | return ret; | |
1099 | ||
1100 | while (!skb_queue_empty(&mpdus_skbs)) { | |
1101 | skb = __skb_dequeue(&mpdus_skbs); | |
1102 | ||
1103 | ret = iwl_mvm_tx_mpdu(mvm, skb, &info, sta); | |
1104 | if (ret) { | |
1105 | __skb_queue_purge(&mpdus_skbs); | |
1106 | return ret; | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | return 0; | |
1111 | } | |
1112 | ||
1113 | static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm, | |
1114 | struct ieee80211_sta *sta, u8 tid) | |
1115 | { | |
1116 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1117 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; | |
1118 | struct ieee80211_vif *vif = mvmsta->vif; | |
1119 | u16 normalized_ssn; | |
1120 | ||
1121 | lockdep_assert_held(&mvmsta->lock); | |
1122 | ||
1123 | if ((tid_data->state == IWL_AGG_ON || | |
1124 | tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) && | |
1125 | iwl_mvm_tid_queued(mvm, tid_data) == 0) { | |
1126 | /* | |
1127 | * Now that this aggregation or DQA queue is empty tell | |
1128 | * mac80211 so it knows we no longer have frames buffered for | |
1129 | * the station on this TID (for the TIM bitmap calculation.) | |
1130 | */ | |
1131 | ieee80211_sta_set_buffered(sta, tid, false); | |
1132 | } | |
1133 | ||
1134 | /* | |
1135 | * In A000 HW, the next_reclaimed index is only 8 bit, so we'll need | |
1136 | * to align the wrap around of ssn so we compare relevant values. | |
1137 | */ | |
1138 | normalized_ssn = tid_data->ssn; | |
1139 | if (mvm->trans->cfg->gen2) | |
1140 | normalized_ssn &= 0xff; | |
1141 | ||
1142 | if (normalized_ssn != tid_data->next_reclaimed) | |
1143 | return; | |
1144 | ||
1145 | switch (tid_data->state) { | |
1146 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
1147 | IWL_DEBUG_TX_QUEUES(mvm, | |
1148 | "Can continue addBA flow ssn = next_recl = %d\n", | |
1149 | tid_data->next_reclaimed); | |
1150 | tid_data->state = IWL_AGG_STARTING; | |
1151 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1152 | break; | |
1153 | ||
1154 | case IWL_EMPTYING_HW_QUEUE_DELBA: | |
1155 | IWL_DEBUG_TX_QUEUES(mvm, | |
1156 | "Can continue DELBA flow ssn = next_recl = %d\n", | |
1157 | tid_data->next_reclaimed); | |
1158 | tid_data->state = IWL_AGG_OFF; | |
1159 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1160 | break; | |
1161 | ||
1162 | default: | |
1163 | break; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1168 | const char *iwl_mvm_get_tx_fail_reason(u32 status) | |
1169 | { | |
1170 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x | |
1171 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
1172 | ||
1173 | switch (status & TX_STATUS_MSK) { | |
1174 | case TX_STATUS_SUCCESS: | |
1175 | return "SUCCESS"; | |
1176 | TX_STATUS_POSTPONE(DELAY); | |
1177 | TX_STATUS_POSTPONE(FEW_BYTES); | |
1178 | TX_STATUS_POSTPONE(BT_PRIO); | |
1179 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
1180 | TX_STATUS_POSTPONE(CALC_TTAK); | |
1181 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
1182 | TX_STATUS_FAIL(SHORT_LIMIT); | |
1183 | TX_STATUS_FAIL(LONG_LIMIT); | |
1184 | TX_STATUS_FAIL(UNDERRUN); | |
1185 | TX_STATUS_FAIL(DRAIN_FLOW); | |
1186 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
1187 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
1188 | TX_STATUS_FAIL(DEST_PS); | |
1189 | TX_STATUS_FAIL(HOST_ABORTED); | |
1190 | TX_STATUS_FAIL(BT_RETRY); | |
1191 | TX_STATUS_FAIL(STA_INVALID); | |
1192 | TX_STATUS_FAIL(FRAG_DROPPED); | |
1193 | TX_STATUS_FAIL(TID_DISABLE); | |
1194 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
1195 | TX_STATUS_FAIL(SMALL_CF_POLL); | |
1196 | TX_STATUS_FAIL(FW_DROP); | |
1197 | TX_STATUS_FAIL(STA_COLOR_MISMATCH); | |
1198 | } | |
1199 | ||
1200 | return "UNKNOWN"; | |
1201 | ||
1202 | #undef TX_STATUS_FAIL | |
1203 | #undef TX_STATUS_POSTPONE | |
1204 | } | |
1205 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1206 | ||
1207 | void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags, | |
1208 | enum nl80211_band band, | |
1209 | struct ieee80211_tx_rate *r) | |
1210 | { | |
1211 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) | |
1212 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
1213 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1214 | case RATE_MCS_CHAN_WIDTH_20: | |
1215 | break; | |
1216 | case RATE_MCS_CHAN_WIDTH_40: | |
1217 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
1218 | break; | |
1219 | case RATE_MCS_CHAN_WIDTH_80: | |
1220 | r->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH; | |
1221 | break; | |
1222 | case RATE_MCS_CHAN_WIDTH_160: | |
1223 | r->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH; | |
1224 | break; | |
1225 | } | |
1226 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
1227 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
1228 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
1229 | r->flags |= IEEE80211_TX_RC_MCS; | |
1230 | r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
1231 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { | |
1232 | ieee80211_rate_set_vht( | |
1233 | r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK, | |
1234 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
1235 | RATE_VHT_MCS_NSS_POS) + 1); | |
1236 | r->flags |= IEEE80211_TX_RC_VHT_MCS; | |
1237 | } else { | |
1238 | r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, | |
1239 | band); | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | /** | |
1244 | * translate ucode response to mac80211 tx status control values | |
1245 | */ | |
1246 | static void iwl_mvm_hwrate_to_tx_status(u32 rate_n_flags, | |
1247 | struct ieee80211_tx_info *info) | |
1248 | { | |
1249 | struct ieee80211_tx_rate *r = &info->status.rates[0]; | |
1250 | ||
1251 | info->status.antenna = | |
1252 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
1253 | iwl_mvm_hwrate_to_tx_rate(rate_n_flags, info->band, r); | |
1254 | } | |
1255 | ||
1256 | static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm, | |
1257 | u32 status) | |
1258 | { | |
1259 | struct iwl_fw_dbg_trigger_tlv *trig; | |
1260 | struct iwl_fw_dbg_trigger_tx_status *status_trig; | |
1261 | int i; | |
1262 | ||
1263 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TX_STATUS)) | |
1264 | return; | |
1265 | ||
1266 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TX_STATUS); | |
1267 | status_trig = (void *)trig->data; | |
1268 | ||
1269 | if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig)) | |
1270 | return; | |
1271 | ||
1272 | for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) { | |
1273 | /* don't collect on status 0 */ | |
1274 | if (!status_trig->statuses[i].status) | |
1275 | break; | |
1276 | ||
1277 | if (status_trig->statuses[i].status != (status & TX_STATUS_MSK)) | |
1278 | continue; | |
1279 | ||
1280 | iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, | |
1281 | "Tx status %d was received", | |
1282 | status & TX_STATUS_MSK); | |
1283 | break; | |
1284 | } | |
1285 | } | |
1286 | ||
1287 | /** | |
1288 | * iwl_mvm_get_scd_ssn - returns the SSN of the SCD | |
1289 | * @tx_resp: the Tx response from the fw (agg or non-agg) | |
1290 | * | |
1291 | * When the fw sends an AMPDU, it fetches the MPDUs one after the other. Since | |
1292 | * it can't know that everything will go well until the end of the AMPDU, it | |
1293 | * can't know in advance the number of MPDUs that will be sent in the current | |
1294 | * batch. This is why it writes the agg Tx response while it fetches the MPDUs. | |
1295 | * Hence, it can't know in advance what the SSN of the SCD will be at the end | |
1296 | * of the batch. This is why the SSN of the SCD is written at the end of the | |
1297 | * whole struct at a variable offset. This function knows how to cope with the | |
1298 | * variable offset and returns the SSN of the SCD. | |
1299 | */ | |
1300 | static inline u32 iwl_mvm_get_scd_ssn(struct iwl_mvm *mvm, | |
1301 | struct iwl_mvm_tx_resp *tx_resp) | |
1302 | { | |
1303 | return le32_to_cpup((__le32 *)iwl_mvm_get_agg_status(mvm, tx_resp) + | |
1304 | tx_resp->frame_count) & 0xfff; | |
1305 | } | |
1306 | ||
1307 | static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, | |
1308 | struct iwl_rx_packet *pkt) | |
1309 | { | |
1310 | struct ieee80211_sta *sta; | |
1311 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1312 | int txq_id = SEQ_TO_QUEUE(sequence); | |
1313 | /* struct iwl_mvm_tx_resp_v3 is almost the same */ | |
1314 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1315 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1316 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1317 | struct agg_tx_status *agg_status = | |
1318 | iwl_mvm_get_agg_status(mvm, tx_resp); | |
1319 | u32 status = le16_to_cpu(agg_status->status); | |
1320 | u16 ssn = iwl_mvm_get_scd_ssn(mvm, tx_resp); | |
1321 | struct iwl_mvm_sta *mvmsta; | |
1322 | struct sk_buff_head skbs; | |
1323 | u8 skb_freed = 0; | |
1324 | u8 lq_color; | |
1325 | u16 next_reclaimed, seq_ctl; | |
1326 | bool is_ndp = false; | |
1327 | ||
1328 | __skb_queue_head_init(&skbs); | |
1329 | ||
1330 | if (iwl_mvm_has_new_tx_api(mvm)) | |
1331 | txq_id = le16_to_cpu(tx_resp->tx_queue); | |
1332 | ||
1333 | seq_ctl = le16_to_cpu(tx_resp->seq_ctl); | |
1334 | ||
1335 | /* we can free until ssn % q.n_bd not inclusive */ | |
1336 | iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs); | |
1337 | ||
1338 | while (!skb_queue_empty(&skbs)) { | |
1339 | struct sk_buff *skb = __skb_dequeue(&skbs); | |
1340 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1341 | bool flushed = false; | |
1342 | ||
1343 | skb_freed++; | |
1344 | ||
1345 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
1346 | ||
1347 | memset(&info->status, 0, sizeof(info->status)); | |
1348 | ||
1349 | /* inform mac80211 about what happened with the frame */ | |
1350 | switch (status & TX_STATUS_MSK) { | |
1351 | case TX_STATUS_SUCCESS: | |
1352 | case TX_STATUS_DIRECT_DONE: | |
1353 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1354 | break; | |
1355 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
1356 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
1357 | flushed = true; | |
1358 | break; | |
1359 | case TX_STATUS_FAIL_DEST_PS: | |
1360 | /* the FW should have stopped the queue and not | |
1361 | * return this status | |
1362 | */ | |
1363 | WARN_ON(1); | |
1364 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; | |
1365 | break; | |
1366 | default: | |
1367 | break; | |
1368 | } | |
1369 | ||
1370 | iwl_mvm_tx_status_check_trigger(mvm, status); | |
1371 | ||
1372 | info->status.rates[0].count = tx_resp->failure_frame + 1; | |
1373 | iwl_mvm_hwrate_to_tx_status(le32_to_cpu(tx_resp->initial_rate), | |
1374 | info); | |
1375 | info->status.status_driver_data[1] = | |
1376 | (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate); | |
1377 | ||
1378 | /* Single frame failure in an AMPDU queue => send BAR */ | |
1379 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
1380 | !(info->flags & IEEE80211_TX_STAT_ACK) && | |
1381 | !(info->flags & IEEE80211_TX_STAT_TX_FILTERED) && !flushed) | |
1382 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1383 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
1384 | ||
1385 | /* W/A FW bug: seq_ctl is wrong when the status isn't success */ | |
1386 | if (status != TX_STATUS_SUCCESS) { | |
1387 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1388 | seq_ctl = le16_to_cpu(hdr->seq_ctrl); | |
1389 | } | |
1390 | ||
1391 | if (unlikely(!seq_ctl)) { | |
1392 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1393 | ||
1394 | /* | |
1395 | * If it is an NDP, we can't update next_reclaim since | |
1396 | * its sequence control is 0. Note that for that same | |
1397 | * reason, NDPs are never sent to A-MPDU'able queues | |
1398 | * so that we can never have more than one freed frame | |
1399 | * for a single Tx resonse (see WARN_ON below). | |
1400 | */ | |
1401 | if (ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1402 | is_ndp = true; | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * TODO: this is not accurate if we are freeing more than one | |
1407 | * packet. | |
1408 | */ | |
1409 | info->status.tx_time = | |
1410 | le16_to_cpu(tx_resp->wireless_media_time); | |
1411 | BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1); | |
1412 | lq_color = TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info); | |
1413 | info->status.status_driver_data[0] = | |
1414 | RS_DRV_DATA_PACK(lq_color, tx_resp->reduced_tpc); | |
1415 | ||
1416 | ieee80211_tx_status(mvm->hw, skb); | |
1417 | } | |
1418 | ||
1419 | /* This is an aggregation queue or might become one, so we use | |
1420 | * the ssn since: ssn = wifi seq_num % 256. | |
1421 | * The seq_ctl is the sequence control of the packet to which | |
1422 | * this Tx response relates. But if there is a hole in the | |
1423 | * bitmap of the BA we received, this Tx response may allow to | |
1424 | * reclaim the hole and all the subsequent packets that were | |
1425 | * already acked. In that case, seq_ctl != ssn, and the next | |
1426 | * packet to be reclaimed will be ssn and not seq_ctl. In that | |
1427 | * case, several packets will be reclaimed even if | |
1428 | * frame_count = 1. | |
1429 | * | |
1430 | * The ssn is the index (% 256) of the latest packet that has | |
1431 | * treated (acked / dropped) + 1. | |
1432 | */ | |
1433 | next_reclaimed = ssn; | |
1434 | ||
1435 | IWL_DEBUG_TX_REPLY(mvm, | |
1436 | "TXQ %d status %s (0x%08x)\n", | |
1437 | txq_id, iwl_mvm_get_tx_fail_reason(status), status); | |
1438 | ||
1439 | IWL_DEBUG_TX_REPLY(mvm, | |
1440 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n", | |
1441 | le32_to_cpu(tx_resp->initial_rate), | |
1442 | tx_resp->failure_frame, SEQ_TO_INDEX(sequence), | |
1443 | ssn, next_reclaimed, seq_ctl); | |
1444 | ||
1445 | rcu_read_lock(); | |
1446 | ||
1447 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1448 | /* | |
1449 | * sta can't be NULL otherwise it'd mean that the sta has been freed in | |
1450 | * the firmware while we still have packets for it in the Tx queues. | |
1451 | */ | |
1452 | if (WARN_ON_ONCE(!sta)) | |
1453 | goto out; | |
1454 | ||
1455 | if (!IS_ERR(sta)) { | |
1456 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1457 | ||
1458 | if (tid != IWL_TID_NON_QOS && tid != IWL_MGMT_TID) { | |
1459 | struct iwl_mvm_tid_data *tid_data = | |
1460 | &mvmsta->tid_data[tid]; | |
1461 | bool send_eosp_ndp = false; | |
1462 | ||
1463 | spin_lock_bh(&mvmsta->lock); | |
1464 | ||
1465 | if (!is_ndp) { | |
1466 | tid_data->next_reclaimed = next_reclaimed; | |
1467 | IWL_DEBUG_TX_REPLY(mvm, | |
1468 | "Next reclaimed packet:%d\n", | |
1469 | next_reclaimed); | |
1470 | } else { | |
1471 | IWL_DEBUG_TX_REPLY(mvm, | |
1472 | "NDP - don't update next_reclaimed\n"); | |
1473 | } | |
1474 | ||
1475 | iwl_mvm_check_ratid_empty(mvm, sta, tid); | |
1476 | ||
1477 | if (mvmsta->sleep_tx_count) { | |
1478 | mvmsta->sleep_tx_count--; | |
1479 | if (mvmsta->sleep_tx_count && | |
1480 | !iwl_mvm_tid_queued(mvm, tid_data)) { | |
1481 | /* | |
1482 | * The number of frames in the queue | |
1483 | * dropped to 0 even if we sent less | |
1484 | * frames than we thought we had on the | |
1485 | * Tx queue. | |
1486 | * This means we had holes in the BA | |
1487 | * window that we just filled, ask | |
1488 | * mac80211 to send EOSP since the | |
1489 | * firmware won't know how to do that. | |
1490 | * Send NDP and the firmware will send | |
1491 | * EOSP notification that will trigger | |
1492 | * a call to ieee80211_sta_eosp(). | |
1493 | */ | |
1494 | send_eosp_ndp = true; | |
1495 | } | |
1496 | } | |
1497 | ||
1498 | spin_unlock_bh(&mvmsta->lock); | |
1499 | if (send_eosp_ndp) { | |
1500 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, | |
1501 | IEEE80211_FRAME_RELEASE_UAPSD, | |
1502 | 1, tid, false, false); | |
1503 | mvmsta->sleep_tx_count = 0; | |
1504 | ieee80211_send_eosp_nullfunc(sta, tid); | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | if (mvmsta->next_status_eosp) { | |
1509 | mvmsta->next_status_eosp = false; | |
1510 | ieee80211_sta_eosp(sta); | |
1511 | } | |
1512 | } else { | |
1513 | mvmsta = NULL; | |
1514 | } | |
1515 | ||
1516 | out: | |
1517 | rcu_read_unlock(); | |
1518 | } | |
1519 | ||
1520 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1521 | #define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x | |
1522 | static const char *iwl_get_agg_tx_status(u16 status) | |
1523 | { | |
1524 | switch (status & AGG_TX_STATE_STATUS_MSK) { | |
1525 | AGG_TX_STATE_(TRANSMITTED); | |
1526 | AGG_TX_STATE_(UNDERRUN); | |
1527 | AGG_TX_STATE_(BT_PRIO); | |
1528 | AGG_TX_STATE_(FEW_BYTES); | |
1529 | AGG_TX_STATE_(ABORT); | |
1530 | AGG_TX_STATE_(TX_ON_AIR_DROP); | |
1531 | AGG_TX_STATE_(LAST_SENT_TRY_CNT); | |
1532 | AGG_TX_STATE_(LAST_SENT_BT_KILL); | |
1533 | AGG_TX_STATE_(SCD_QUERY); | |
1534 | AGG_TX_STATE_(TEST_BAD_CRC32); | |
1535 | AGG_TX_STATE_(RESPONSE); | |
1536 | AGG_TX_STATE_(DUMP_TX); | |
1537 | AGG_TX_STATE_(DELAY_TX); | |
1538 | } | |
1539 | ||
1540 | return "UNKNOWN"; | |
1541 | } | |
1542 | ||
1543 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1544 | struct iwl_rx_packet *pkt) | |
1545 | { | |
1546 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1547 | struct agg_tx_status *frame_status = | |
1548 | iwl_mvm_get_agg_status(mvm, tx_resp); | |
1549 | int i; | |
1550 | ||
1551 | for (i = 0; i < tx_resp->frame_count; i++) { | |
1552 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
1553 | ||
1554 | IWL_DEBUG_TX_REPLY(mvm, | |
1555 | "status %s (0x%04x), try-count (%d) seq (0x%x)\n", | |
1556 | iwl_get_agg_tx_status(fstatus), | |
1557 | fstatus & AGG_TX_STATE_STATUS_MSK, | |
1558 | (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >> | |
1559 | AGG_TX_STATE_TRY_CNT_POS, | |
1560 | le16_to_cpu(frame_status[i].sequence)); | |
1561 | } | |
1562 | } | |
1563 | #else | |
1564 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1565 | struct iwl_rx_packet *pkt) | |
1566 | {} | |
1567 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1568 | ||
1569 | static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm, | |
1570 | struct iwl_rx_packet *pkt) | |
1571 | { | |
1572 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1573 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1574 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1575 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1576 | struct iwl_mvm_sta *mvmsta; | |
1577 | int queue = SEQ_TO_QUEUE(sequence); | |
1578 | ||
1579 | if (WARN_ON_ONCE(queue < IWL_MVM_DQA_MIN_DATA_QUEUE && | |
1580 | (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE))) | |
1581 | return; | |
1582 | ||
1583 | if (WARN_ON_ONCE(tid == IWL_TID_NON_QOS)) | |
1584 | return; | |
1585 | ||
1586 | iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt); | |
1587 | ||
1588 | rcu_read_lock(); | |
1589 | ||
1590 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); | |
1591 | ||
1592 | if (!WARN_ON_ONCE(!mvmsta)) { | |
1593 | mvmsta->tid_data[tid].rate_n_flags = | |
1594 | le32_to_cpu(tx_resp->initial_rate); | |
1595 | mvmsta->tid_data[tid].tx_time = | |
1596 | le16_to_cpu(tx_resp->wireless_media_time); | |
1597 | mvmsta->tid_data[tid].lq_color = | |
1598 | TX_RES_RATE_TABLE_COL_GET(tx_resp->tlc_info); | |
1599 | } | |
1600 | ||
1601 | rcu_read_unlock(); | |
1602 | } | |
1603 | ||
1604 | void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) | |
1605 | { | |
1606 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1607 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1608 | ||
1609 | if (tx_resp->frame_count == 1) | |
1610 | iwl_mvm_rx_tx_cmd_single(mvm, pkt); | |
1611 | else | |
1612 | iwl_mvm_rx_tx_cmd_agg(mvm, pkt); | |
1613 | } | |
1614 | ||
1615 | static void iwl_mvm_tx_reclaim(struct iwl_mvm *mvm, int sta_id, int tid, | |
1616 | int txq, int index, | |
1617 | struct ieee80211_tx_info *ba_info, u32 rate) | |
1618 | { | |
1619 | struct sk_buff_head reclaimed_skbs; | |
1620 | struct iwl_mvm_tid_data *tid_data; | |
1621 | struct ieee80211_sta *sta; | |
1622 | struct iwl_mvm_sta *mvmsta; | |
1623 | struct sk_buff *skb; | |
1624 | int freed; | |
1625 | ||
1626 | if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT || | |
1627 | tid >= IWL_MAX_TID_COUNT, | |
1628 | "sta_id %d tid %d", sta_id, tid)) | |
1629 | return; | |
1630 | ||
1631 | rcu_read_lock(); | |
1632 | ||
1633 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1634 | ||
1635 | /* Reclaiming frames for a station that has been deleted ? */ | |
1636 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
1637 | rcu_read_unlock(); | |
1638 | return; | |
1639 | } | |
1640 | ||
1641 | mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
1642 | tid_data = &mvmsta->tid_data[tid]; | |
1643 | ||
1644 | if (tid_data->txq_id != txq) { | |
1645 | IWL_ERR(mvm, | |
1646 | "invalid BA notification: Q %d, tid %d\n", | |
1647 | tid_data->txq_id, tid); | |
1648 | rcu_read_unlock(); | |
1649 | return; | |
1650 | } | |
1651 | ||
1652 | spin_lock_bh(&mvmsta->lock); | |
1653 | ||
1654 | __skb_queue_head_init(&reclaimed_skbs); | |
1655 | ||
1656 | /* | |
1657 | * Release all TFDs before the SSN, i.e. all TFDs in front of | |
1658 | * block-ack window (we assume that they've been successfully | |
1659 | * transmitted ... if not, it's too late anyway). | |
1660 | */ | |
1661 | iwl_trans_reclaim(mvm->trans, txq, index, &reclaimed_skbs); | |
1662 | ||
1663 | tid_data->next_reclaimed = index; | |
1664 | ||
1665 | iwl_mvm_check_ratid_empty(mvm, sta, tid); | |
1666 | ||
1667 | freed = 0; | |
1668 | ||
1669 | /* pack lq color from tid_data along the reduced txp */ | |
1670 | ba_info->status.status_driver_data[0] = | |
1671 | RS_DRV_DATA_PACK(tid_data->lq_color, | |
1672 | ba_info->status.status_driver_data[0]); | |
1673 | ba_info->status.status_driver_data[1] = (void *)(uintptr_t)rate; | |
1674 | ||
1675 | skb_queue_walk(&reclaimed_skbs, skb) { | |
1676 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1677 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1678 | ||
1679 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
1680 | freed++; | |
1681 | else | |
1682 | WARN_ON_ONCE(1); | |
1683 | ||
1684 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
1685 | ||
1686 | memset(&info->status, 0, sizeof(info->status)); | |
1687 | /* Packet was transmitted successfully, failures come as single | |
1688 | * frames because before failing a frame the firmware transmits | |
1689 | * it without aggregation at least once. | |
1690 | */ | |
1691 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1692 | ||
1693 | /* this is the first skb we deliver in this batch */ | |
1694 | /* put the rate scaling data there */ | |
1695 | if (freed == 1) { | |
1696 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1697 | memcpy(&info->status, &ba_info->status, | |
1698 | sizeof(ba_info->status)); | |
1699 | iwl_mvm_hwrate_to_tx_status(rate, info); | |
1700 | } | |
1701 | } | |
1702 | ||
1703 | spin_unlock_bh(&mvmsta->lock); | |
1704 | ||
1705 | /* We got a BA notif with 0 acked or scd_ssn didn't progress which is | |
1706 | * possible (i.e. first MPDU in the aggregation wasn't acked) | |
1707 | * Still it's important to update RS about sent vs. acked. | |
1708 | */ | |
1709 | if (skb_queue_empty(&reclaimed_skbs)) { | |
1710 | struct ieee80211_chanctx_conf *chanctx_conf = NULL; | |
1711 | ||
1712 | if (mvmsta->vif) | |
1713 | chanctx_conf = | |
1714 | rcu_dereference(mvmsta->vif->chanctx_conf); | |
1715 | ||
1716 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1717 | goto out; | |
1718 | ||
1719 | ba_info->band = chanctx_conf->def.chan->band; | |
1720 | iwl_mvm_hwrate_to_tx_status(rate, ba_info); | |
1721 | ||
1722 | IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n"); | |
1723 | iwl_mvm_rs_tx_status(mvm, sta, tid, ba_info, false); | |
1724 | } | |
1725 | ||
1726 | out: | |
1727 | rcu_read_unlock(); | |
1728 | ||
1729 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1730 | skb = __skb_dequeue(&reclaimed_skbs); | |
1731 | ieee80211_tx_status(mvm->hw, skb); | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) | |
1736 | { | |
1737 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1738 | int sta_id, tid, txq, index; | |
1739 | struct ieee80211_tx_info ba_info = {}; | |
1740 | struct iwl_mvm_ba_notif *ba_notif; | |
1741 | struct iwl_mvm_tid_data *tid_data; | |
1742 | struct iwl_mvm_sta *mvmsta; | |
1743 | ||
1744 | ba_info.flags = IEEE80211_TX_STAT_AMPDU; | |
1745 | ||
1746 | if (iwl_mvm_has_new_tx_api(mvm)) { | |
1747 | struct iwl_mvm_compressed_ba_notif *ba_res = | |
1748 | (void *)pkt->data; | |
1749 | u8 lq_color = TX_RES_RATE_TABLE_COL_GET(ba_res->tlc_rate_info); | |
1750 | int i; | |
1751 | ||
1752 | sta_id = ba_res->sta_id; | |
1753 | ba_info.status.ampdu_ack_len = (u8)le16_to_cpu(ba_res->done); | |
1754 | ba_info.status.ampdu_len = (u8)le16_to_cpu(ba_res->txed); | |
1755 | ba_info.status.tx_time = | |
1756 | (u16)le32_to_cpu(ba_res->wireless_time); | |
1757 | ba_info.status.status_driver_data[0] = | |
1758 | (void *)(uintptr_t)ba_res->reduced_txp; | |
1759 | ||
1760 | if (!le16_to_cpu(ba_res->tfd_cnt)) | |
1761 | goto out; | |
1762 | ||
1763 | rcu_read_lock(); | |
1764 | ||
1765 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); | |
1766 | if (!mvmsta) | |
1767 | goto out_unlock; | |
1768 | ||
1769 | /* Free per TID */ | |
1770 | for (i = 0; i < le16_to_cpu(ba_res->tfd_cnt); i++) { | |
1771 | struct iwl_mvm_compressed_ba_tfd *ba_tfd = | |
1772 | &ba_res->tfd[i]; | |
1773 | ||
1774 | mvmsta->tid_data[i].lq_color = lq_color; | |
1775 | iwl_mvm_tx_reclaim(mvm, sta_id, ba_tfd->tid, | |
1776 | (int)(le16_to_cpu(ba_tfd->q_num)), | |
1777 | le16_to_cpu(ba_tfd->tfd_index), | |
1778 | &ba_info, | |
1779 | le32_to_cpu(ba_res->tx_rate)); | |
1780 | } | |
1781 | ||
1782 | out_unlock: | |
1783 | rcu_read_unlock(); | |
1784 | out: | |
1785 | IWL_DEBUG_TX_REPLY(mvm, | |
1786 | "BA_NOTIFICATION Received from sta_id = %d, flags %x, sent:%d, acked:%d\n", | |
1787 | sta_id, le32_to_cpu(ba_res->flags), | |
1788 | le16_to_cpu(ba_res->txed), | |
1789 | le16_to_cpu(ba_res->done)); | |
1790 | return; | |
1791 | } | |
1792 | ||
1793 | ba_notif = (void *)pkt->data; | |
1794 | sta_id = ba_notif->sta_id; | |
1795 | tid = ba_notif->tid; | |
1796 | /* "flow" corresponds to Tx queue */ | |
1797 | txq = le16_to_cpu(ba_notif->scd_flow); | |
1798 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1799 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1800 | index = le16_to_cpu(ba_notif->scd_ssn); | |
1801 | ||
1802 | rcu_read_lock(); | |
1803 | mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, sta_id); | |
1804 | if (WARN_ON_ONCE(!mvmsta)) { | |
1805 | rcu_read_unlock(); | |
1806 | return; | |
1807 | } | |
1808 | ||
1809 | tid_data = &mvmsta->tid_data[tid]; | |
1810 | ||
1811 | ba_info.status.ampdu_ack_len = ba_notif->txed_2_done; | |
1812 | ba_info.status.ampdu_len = ba_notif->txed; | |
1813 | ba_info.status.tx_time = tid_data->tx_time; | |
1814 | ba_info.status.status_driver_data[0] = | |
1815 | (void *)(uintptr_t)ba_notif->reduced_txp; | |
1816 | ||
1817 | rcu_read_unlock(); | |
1818 | ||
1819 | iwl_mvm_tx_reclaim(mvm, sta_id, tid, txq, index, &ba_info, | |
1820 | tid_data->rate_n_flags); | |
1821 | ||
1822 | IWL_DEBUG_TX_REPLY(mvm, | |
1823 | "BA_NOTIFICATION Received from %pM, sta_id = %d\n", | |
1824 | ba_notif->sta_addr, ba_notif->sta_id); | |
1825 | ||
1826 | IWL_DEBUG_TX_REPLY(mvm, | |
1827 | "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", | |
1828 | ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl), | |
1829 | le64_to_cpu(ba_notif->bitmap), txq, index, | |
1830 | ba_notif->txed, ba_notif->txed_2_done); | |
1831 | ||
1832 | IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n", | |
1833 | ba_notif->reduced_txp); | |
1834 | } | |
1835 | ||
1836 | /* | |
1837 | * Note that there are transports that buffer frames before they reach | |
1838 | * the firmware. This means that after flush_tx_path is called, the | |
1839 | * queue might not be empty. The race-free way to handle this is to: | |
1840 | * 1) set the station as draining | |
1841 | * 2) flush the Tx path | |
1842 | * 3) wait for the transport queues to be empty | |
1843 | */ | |
1844 | int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, u32 flags) | |
1845 | { | |
1846 | int ret; | |
1847 | struct iwl_tx_path_flush_cmd_v1 flush_cmd = { | |
1848 | .queues_ctl = cpu_to_le32(tfd_msk), | |
1849 | .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH), | |
1850 | }; | |
1851 | ||
1852 | WARN_ON(iwl_mvm_has_new_tx_api(mvm)); | |
1853 | ||
1854 | ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags, | |
1855 | sizeof(flush_cmd), &flush_cmd); | |
1856 | if (ret) | |
1857 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); | |
1858 | return ret; | |
1859 | } | |
1860 | ||
1861 | int iwl_mvm_flush_sta_tids(struct iwl_mvm *mvm, u32 sta_id, | |
1862 | u16 tids, u32 flags) | |
1863 | { | |
1864 | int ret; | |
1865 | struct iwl_tx_path_flush_cmd flush_cmd = { | |
1866 | .sta_id = cpu_to_le32(sta_id), | |
1867 | .tid_mask = cpu_to_le16(tids), | |
1868 | }; | |
1869 | ||
1870 | WARN_ON(!iwl_mvm_has_new_tx_api(mvm)); | |
1871 | ||
1872 | ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags, | |
1873 | sizeof(flush_cmd), &flush_cmd); | |
1874 | if (ret) | |
1875 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); | |
1876 | return ret; | |
1877 | } | |
1878 | ||
1879 | int iwl_mvm_flush_sta(struct iwl_mvm *mvm, void *sta, bool internal, u32 flags) | |
1880 | { | |
1881 | struct iwl_mvm_int_sta *int_sta = sta; | |
1882 | struct iwl_mvm_sta *mvm_sta = sta; | |
1883 | ||
1884 | if (iwl_mvm_has_new_tx_api(mvm)) { | |
1885 | if (internal) | |
1886 | return iwl_mvm_flush_sta_tids(mvm, int_sta->sta_id, | |
1887 | BIT(IWL_MGMT_TID), flags); | |
1888 | ||
1889 | return iwl_mvm_flush_sta_tids(mvm, mvm_sta->sta_id, | |
1890 | 0xFF, flags); | |
1891 | } | |
1892 | ||
1893 | if (internal) | |
1894 | return iwl_mvm_flush_tx_path(mvm, int_sta->tfd_queue_msk, | |
1895 | flags); | |
1896 | ||
1897 | return iwl_mvm_flush_tx_path(mvm, mvm_sta->tfd_queue_msk, flags); | |
1898 | } |