Commit | Line | Data |
---|---|---|
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)) { | |
141 | /* only supported extension headers */ | |
142 | if (protocol != NEXTHDR_ROUTING && | |
143 | protocol != NEXTHDR_HOP && | |
144 | protocol != NEXTHDR_DEST && | |
145 | protocol != NEXTHDR_FRAGMENT) { | |
146 | skb_checksum_help(skb); | |
147 | return; | |
148 | } | |
149 | ||
150 | if (protocol == NEXTHDR_FRAGMENT) { | |
151 | struct frag_hdr *hp = | |
152 | OPT_HDR(struct frag_hdr, skb, off); | |
153 | ||
154 | protocol = hp->nexthdr; | |
155 | off += sizeof(struct frag_hdr); | |
156 | } else { | |
157 | struct ipv6_opt_hdr *hp = | |
158 | OPT_HDR(struct ipv6_opt_hdr, skb, off); | |
159 | ||
160 | protocol = hp->nexthdr; | |
161 | off += ipv6_optlen(hp); | |
162 | } | |
163 | } | |
164 | /* if we get here - protocol now should be TCP/UDP */ | |
165 | #endif | |
166 | } | |
167 | ||
168 | if (protocol != IPPROTO_TCP && protocol != IPPROTO_UDP) { | |
169 | WARN_ON_ONCE(1); | |
170 | skb_checksum_help(skb); | |
171 | return; | |
172 | } | |
173 | ||
174 | /* enable L4 csum */ | |
175 | offload_assist |= BIT(TX_CMD_OFFLD_L4_EN); | |
176 | ||
177 | /* | |
178 | * Set offset to IP header (snap). | |
179 | * We don't support tunneling so no need to take care of inner header. | |
180 | * Size is in words. | |
181 | */ | |
182 | offload_assist |= (4 << TX_CMD_OFFLD_IP_HDR); | |
183 | ||
184 | /* Do IPv4 csum for AMSDU only (no IP csum for Ipv6) */ | |
185 | if (skb->protocol == htons(ETH_P_IP) && | |
186 | (offload_assist & BIT(TX_CMD_OFFLD_AMSDU))) { | |
187 | ip_hdr(skb)->check = 0; | |
188 | offload_assist |= BIT(TX_CMD_OFFLD_L3_EN); | |
189 | } | |
190 | ||
191 | /* reset UDP/TCP header csum */ | |
192 | if (protocol == IPPROTO_TCP) | |
193 | tcp_hdr(skb)->check = 0; | |
194 | else | |
195 | udp_hdr(skb)->check = 0; | |
196 | ||
197 | /* mac header len should include IV, size is in words */ | |
198 | if (info->control.hw_key) | |
199 | mh_len += info->control.hw_key->iv_len; | |
200 | mh_len /= 2; | |
201 | offload_assist |= mh_len << TX_CMD_OFFLD_MH_SIZE; | |
202 | ||
203 | tx_cmd->offload_assist = cpu_to_le16(offload_assist); | |
204 | #endif | |
205 | } | |
206 | ||
8ca151b5 JB |
207 | /* |
208 | * Sets most of the Tx cmd's fields | |
209 | */ | |
6ce73e65 AN |
210 | void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, |
211 | struct iwl_tx_cmd *tx_cmd, | |
212 | struct ieee80211_tx_info *info, u8 sta_id) | |
8ca151b5 JB |
213 | { |
214 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
215 | __le16 fc = hdr->frame_control; | |
216 | u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags); | |
217 | u32 len = skb->len + FCS_LEN; | |
b797e3fb | 218 | u8 ac; |
8ca151b5 JB |
219 | |
220 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
221 | tx_flags |= TX_CMD_FLG_ACK; | |
222 | else | |
223 | tx_flags &= ~TX_CMD_FLG_ACK; | |
224 | ||
225 | if (ieee80211_is_probe_resp(fc)) | |
226 | tx_flags |= TX_CMD_FLG_TSF; | |
8ca151b5 | 227 | |
8ca151b5 JB |
228 | if (ieee80211_has_morefrags(fc)) |
229 | tx_flags |= TX_CMD_FLG_MORE_FRAG; | |
230 | ||
231 | if (ieee80211_is_data_qos(fc)) { | |
232 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
233 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
234 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
d8fe4844 SS |
235 | if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) |
236 | tx_cmd->offload_assist |= | |
237 | cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)); | |
9b3b43d8 ES |
238 | } else if (ieee80211_is_back_req(fc)) { |
239 | struct ieee80211_bar *bar = (void *)skb->data; | |
240 | u16 control = le16_to_cpu(bar->control); | |
4203263d | 241 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
9b3b43d8 ES |
242 | |
243 | tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR; | |
244 | tx_cmd->tid_tspec = (control & | |
245 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> | |
246 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
247 | WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT); | |
4203263d EG |
248 | iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec, |
249 | ssn); | |
8ca151b5 JB |
250 | } else { |
251 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; | |
252 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) | |
253 | tx_flags |= TX_CMD_FLG_SEQ_CTL; | |
254 | else | |
255 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
256 | } | |
257 | ||
a9dc5060 ES |
258 | /* Default to 0 (BE) when tid_spec is set to IWL_TID_NON_QOS */ |
259 | if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT) | |
260 | ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; | |
261 | else | |
262 | ac = tid_to_mac80211_ac[0]; | |
263 | ||
b797e3fb EG |
264 | tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) << |
265 | TX_CMD_FLG_BT_PRIO_POS; | |
266 | ||
8ca151b5 JB |
267 | if (ieee80211_is_mgmt(fc)) { |
268 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
b084a356 AA |
269 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC); |
270 | else if (ieee80211_is_action(fc)) | |
271 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); | |
8ca151b5 | 272 | else |
b084a356 | 273 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 JB |
274 | |
275 | /* The spec allows Action frames in A-MPDU, we don't support | |
276 | * it | |
277 | */ | |
278 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU); | |
63f7535d | 279 | } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) { |
b084a356 | 280 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 | 281 | } else { |
b084a356 | 282 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); |
8ca151b5 JB |
283 | } |
284 | ||
8ca151b5 JB |
285 | if (ieee80211_is_data(fc) && len > mvm->rts_threshold && |
286 | !is_multicast_ether_addr(ieee80211_get_DA(hdr))) | |
287 | tx_flags |= TX_CMD_FLG_PROT_REQUIRE; | |
288 | ||
859d914c JB |
289 | if (fw_has_capa(&mvm->fw->ucode_capa, |
290 | IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) && | |
f1daa00e AO |
291 | ieee80211_action_contains_tpc(skb)) |
292 | tx_flags |= TX_CMD_FLG_WRITE_TX_POWER; | |
293 | ||
8ca151b5 JB |
294 | tx_cmd->tx_flags = cpu_to_le32(tx_flags); |
295 | /* Total # bytes to be transmitted */ | |
a6d5e32f EG |
296 | tx_cmd->len = cpu_to_le16((u16)skb->len + |
297 | (uintptr_t)info->driver_data[0]); | |
8ca151b5 JB |
298 | tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); |
299 | tx_cmd->sta_id = sta_id; | |
d8fe4844 SS |
300 | |
301 | /* padding is inserted later in transport */ | |
302 | if (ieee80211_hdrlen(fc) % 4 && | |
303 | !(tx_cmd->offload_assist & cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)))) | |
304 | tx_cmd->offload_assist |= cpu_to_le16(BIT(TX_CMD_OFFLD_PAD)); | |
5e6a98dc SS |
305 | |
306 | iwl_mvm_tx_csum(mvm, skb, hdr, info, tx_cmd); | |
8ca151b5 JB |
307 | } |
308 | ||
309 | /* | |
310 | * Sets the fields in the Tx cmd that are rate related | |
311 | */ | |
6ce73e65 AN |
312 | void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd, |
313 | struct ieee80211_tx_info *info, | |
314 | struct ieee80211_sta *sta, __le16 fc) | |
8ca151b5 JB |
315 | { |
316 | u32 rate_flags; | |
317 | int rate_idx; | |
318 | u8 rate_plcp; | |
319 | ||
320 | /* Set retry limit on RTS packets */ | |
321 | tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT; | |
322 | ||
323 | /* Set retry limit on DATA packets and Probe Responses*/ | |
324 | if (ieee80211_is_probe_resp(fc)) { | |
325 | tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT; | |
326 | tx_cmd->rts_retry_limit = | |
327 | min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit); | |
328 | } else if (ieee80211_is_back_req(fc)) { | |
329 | tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT; | |
330 | } else { | |
331 | tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
332 | } | |
333 | ||
334 | /* | |
e89044d7 | 335 | * for data packets, rate info comes from the table inside the fw. This |
1ffde699 | 336 | * table is controlled by LINK_QUALITY commands |
8ca151b5 JB |
337 | */ |
338 | ||
1ffde699 | 339 | if (ieee80211_is_data(fc) && sta) { |
8ca151b5 JB |
340 | tx_cmd->initial_rate_index = 0; |
341 | tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); | |
342 | return; | |
343 | } else if (ieee80211_is_back_req(fc)) { | |
2edc6ec6 EG |
344 | tx_cmd->tx_flags |= |
345 | cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); | |
8ca151b5 JB |
346 | } |
347 | ||
348 | /* HT rate doesn't make sense for a non data frame */ | |
349 | WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS, | |
f85e9d19 JB |
350 | "Got an HT rate (flags:0x%x/mcs:%d) for a non data frame (fc:0x%x)\n", |
351 | info->control.rates[0].flags, | |
352 | info->control.rates[0].idx, | |
353 | le16_to_cpu(fc)); | |
8ca151b5 JB |
354 | |
355 | rate_idx = info->control.rates[0].idx; | |
356 | /* if the rate isn't a well known legacy rate, take the lowest one */ | |
357 | if (rate_idx < 0 || rate_idx > IWL_RATE_COUNT_LEGACY) | |
358 | rate_idx = rate_lowest_index( | |
359 | &mvm->nvm_data->bands[info->band], sta); | |
360 | ||
361 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ | |
57fbcce3 | 362 | if (info->band == NL80211_BAND_5GHZ) |
8ca151b5 JB |
363 | rate_idx += IWL_FIRST_OFDM_RATE; |
364 | ||
365 | /* For 2.4 GHZ band, check that there is no need to remap */ | |
366 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
367 | ||
368 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
369 | rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx); | |
370 | ||
371 | mvm->mgmt_last_antenna_idx = | |
a0544272 | 372 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 | 373 | mvm->mgmt_last_antenna_idx); |
34c8b24f | 374 | |
57fbcce3 | 375 | if (info->band == NL80211_BAND_2GHZ && |
34c8b24f | 376 | !iwl_mvm_bt_coex_is_shared_ant_avail(mvm)) |
923a8c1d | 377 | rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS; |
34c8b24f EG |
378 | else |
379 | rate_flags = | |
380 | BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; | |
8ca151b5 JB |
381 | |
382 | /* Set CCK flag as needed */ | |
383 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
384 | rate_flags |= RATE_MCS_CCK_MSK; | |
385 | ||
386 | /* Set the rate in the TX cmd */ | |
387 | tx_cmd->rate_n_flags = cpu_to_le32((u32)rate_plcp | rate_flags); | |
388 | } | |
389 | ||
390 | /* | |
391 | * Sets the fields in the Tx cmd that are crypto related | |
392 | */ | |
ca8c0f4b JB |
393 | static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm, |
394 | struct ieee80211_tx_info *info, | |
395 | struct iwl_tx_cmd *tx_cmd, | |
396 | struct sk_buff *skb_frag, | |
397 | int hdrlen) | |
8ca151b5 JB |
398 | { |
399 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
ca8c0f4b JB |
400 | u8 *crypto_hdr = skb_frag->data + hdrlen; |
401 | u64 pn; | |
8ca151b5 JB |
402 | |
403 | switch (keyconf->cipher) { | |
404 | case WLAN_CIPHER_SUITE_CCMP: | |
ca8c0f4b JB |
405 | case WLAN_CIPHER_SUITE_CCMP_256: |
406 | iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd); | |
407 | pn = atomic64_inc_return(&keyconf->tx_pn); | |
408 | crypto_hdr[0] = pn; | |
409 | crypto_hdr[2] = 0; | |
410 | crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6); | |
411 | crypto_hdr[1] = pn >> 8; | |
412 | crypto_hdr[4] = pn >> 16; | |
413 | crypto_hdr[5] = pn >> 24; | |
414 | crypto_hdr[6] = pn >> 32; | |
415 | crypto_hdr[7] = pn >> 40; | |
8ca151b5 JB |
416 | break; |
417 | ||
418 | case WLAN_CIPHER_SUITE_TKIP: | |
419 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; | |
1ad4f639 EP |
420 | pn = atomic64_inc_return(&keyconf->tx_pn); |
421 | ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn); | |
8ca151b5 JB |
422 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
423 | break; | |
424 | ||
425 | case WLAN_CIPHER_SUITE_WEP104: | |
426 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
427 | /* fall through */ | |
428 | case WLAN_CIPHER_SUITE_WEP40: | |
429 | tx_cmd->sec_ctl |= TX_CMD_SEC_WEP | | |
430 | ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) & | |
431 | TX_CMD_SEC_WEP_KEY_IDX_MSK); | |
432 | ||
433 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); | |
434 | break; | |
435 | default: | |
e36e5433 | 436 | tx_cmd->sec_ctl |= TX_CMD_SEC_EXT; |
8ca151b5 JB |
437 | } |
438 | } | |
439 | ||
440 | /* | |
441 | * Allocates and sets the Tx cmd the driver data pointers in the skb | |
442 | */ | |
443 | static struct iwl_device_cmd * | |
444 | iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, | |
ca8c0f4b | 445 | int hdrlen, struct ieee80211_sta *sta, u8 sta_id) |
8ca151b5 JB |
446 | { |
447 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
448 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
449 | struct iwl_device_cmd *dev_cmd; | |
450 | struct iwl_tx_cmd *tx_cmd; | |
451 | ||
452 | dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans); | |
453 | ||
454 | if (unlikely(!dev_cmd)) | |
455 | return NULL; | |
456 | ||
457 | memset(dev_cmd, 0, sizeof(*dev_cmd)); | |
3961a61a | 458 | dev_cmd->hdr.cmd = TX_CMD; |
8ca151b5 JB |
459 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; |
460 | ||
461 | if (info->control.hw_key) | |
ca8c0f4b | 462 | iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen); |
8ca151b5 JB |
463 | |
464 | iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id); | |
465 | ||
466 | iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control); | |
467 | ||
468 | memset(&info->status, 0, sizeof(info->status)); | |
3f73b8ca | 469 | memset(info->driver_data, 0, sizeof(info->driver_data)); |
8ca151b5 | 470 | |
8ca151b5 JB |
471 | info->driver_data[1] = dev_cmd; |
472 | ||
473 | return dev_cmd; | |
474 | } | |
475 | ||
476 | int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb) | |
477 | { | |
478 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
479 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
480 | struct iwl_device_cmd *dev_cmd; | |
481 | struct iwl_tx_cmd *tx_cmd; | |
482 | u8 sta_id; | |
ca8c0f4b | 483 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); |
8ca151b5 JB |
484 | |
485 | if (WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU)) | |
486 | return -1; | |
487 | ||
488 | if (WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && | |
489 | (!info->control.vif || | |
490 | info->hw_queue != info->control.vif->cab_queue))) | |
491 | return -1; | |
492 | ||
a6d5e32f EG |
493 | /* This holds the amsdu headers length */ |
494 | info->driver_data[0] = (void *)(uintptr_t)0; | |
495 | ||
7da91b0e AM |
496 | /* |
497 | * IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets that can be used | |
498 | * in 2 different types of vifs, P2P & STATION. P2P uses the offchannel | |
499 | * queue. STATION (HS2.0) uses the auxiliary context of the FW, | |
500 | * and hence needs to be sent on the aux queue | |
501 | */ | |
502 | if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && | |
503 | info->control.vif->type == NL80211_IFTYPE_STATION) | |
504 | IEEE80211_SKB_CB(skb)->hw_queue = mvm->aux_queue; | |
505 | ||
8ca151b5 | 506 | /* |
d0ab08d0 | 507 | * If the interface on which the frame is sent is the P2P_DEVICE |
8ca151b5 | 508 | * or an AP/GO interface use the broadcast station associated |
d0ab08d0 IP |
509 | * with it; otherwise if the interface is a managed interface |
510 | * use the AP station associated with it for multicast traffic | |
511 | * (this is not possible for unicast packets as a TLDS discovery | |
512 | * response are sent without a station entry); otherwise use the | |
513 | * AUX station. | |
8ca151b5 | 514 | */ |
d0ab08d0 IP |
515 | sta_id = mvm->aux_sta.sta_id; |
516 | if (info->control.vif) { | |
8ca151b5 JB |
517 | struct iwl_mvm_vif *mvmvif = |
518 | iwl_mvm_vif_from_mac80211(info->control.vif); | |
d0ab08d0 IP |
519 | |
520 | if (info->control.vif->type == NL80211_IFTYPE_P2P_DEVICE || | |
521 | info->control.vif->type == NL80211_IFTYPE_AP) | |
522 | sta_id = mvmvif->bcast_sta.sta_id; | |
523 | else if (info->control.vif->type == NL80211_IFTYPE_STATION && | |
524 | is_multicast_ether_addr(hdr->addr1)) { | |
525 | u8 ap_sta_id = ACCESS_ONCE(mvmvif->ap_sta_id); | |
526 | ||
527 | if (ap_sta_id != IWL_MVM_STATION_COUNT) | |
528 | sta_id = ap_sta_id; | |
529 | } | |
8ca151b5 JB |
530 | } |
531 | ||
532 | IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, info->hw_queue); | |
533 | ||
ca8c0f4b | 534 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, hdrlen, NULL, sta_id); |
8ca151b5 JB |
535 | if (!dev_cmd) |
536 | return -1; | |
537 | ||
538 | /* From now on, we cannot access info->control */ | |
539 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; | |
540 | ||
541 | /* Copy MAC header from skb into command buffer */ | |
ca8c0f4b | 542 | memcpy(tx_cmd->hdr, hdr, hdrlen); |
8ca151b5 JB |
543 | |
544 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, info->hw_queue)) { | |
545 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
546 | return -1; | |
547 | } | |
548 | ||
fb896c44 LK |
549 | /* |
550 | * Increase the pending frames counter, so that later when a reply comes | |
551 | * in and the counter is decreased - we don't start getting negative | |
552 | * values. | |
553 | * Note that we don't need to make sure it isn't agg'd, since we're | |
554 | * TXing non-sta | |
555 | */ | |
556 | atomic_inc(&mvm->pending_frames[sta_id]); | |
557 | ||
8ca151b5 JB |
558 | return 0; |
559 | } | |
560 | ||
a6d5e32f EG |
561 | #ifdef CONFIG_INET |
562 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
a3713f8b EG |
563 | struct ieee80211_sta *sta, |
564 | struct sk_buff_head *mpdus_skb) | |
565 | { | |
bb81bb68 | 566 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
a6d5e32f EG |
567 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
568 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
569 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
a3713f8b | 570 | struct sk_buff *tmp, *next; |
a6d5e32f | 571 | char cb[sizeof(skb->cb)]; |
bb81bb68 | 572 | unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len; |
a6d5e32f EG |
573 | bool ipv4 = (skb->protocol == htons(ETH_P_IP)); |
574 | u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0; | |
575 | u16 amsdu_add, snap_ip_tcp, pad, i = 0; | |
9e7dce28 | 576 | unsigned int dbg_max_amsdu_len; |
5e6a98dc | 577 | netdev_features_t netdev_features = NETIF_F_CSUM_MASK | NETIF_F_SG; |
50b0213f | 578 | u8 *qc, tid, txf; |
a6d5e32f EG |
579 | |
580 | snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) + | |
581 | tcp_hdrlen(skb); | |
582 | ||
bb81bb68 EG |
583 | qc = ieee80211_get_qos_ctl(hdr); |
584 | tid = *qc & IEEE80211_QOS_CTL_TID_MASK; | |
585 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
586 | return -EINVAL; | |
587 | ||
a6d5e32f | 588 | if (!sta->max_amsdu_len || |
04e3a5da EG |
589 | !ieee80211_is_data_qos(hdr->frame_control) || |
590 | !mvmsta->tlc_amsdu) { | |
a6d5e32f EG |
591 | num_subframes = 1; |
592 | pad = 0; | |
593 | goto segment; | |
594 | } | |
595 | ||
5e6a98dc SS |
596 | /* |
597 | * Do not build AMSDU for IPv6 with extension headers. | |
598 | * ask stack to segment and checkum the generated MPDUs for us. | |
599 | */ | |
600 | if (skb->protocol == htons(ETH_P_IPV6) && | |
601 | ((struct ipv6hdr *)skb_network_header(skb))->nexthdr != | |
602 | IPPROTO_TCP) { | |
603 | num_subframes = 1; | |
604 | pad = 0; | |
605 | netdev_features &= ~NETIF_F_CSUM_MASK; | |
606 | goto segment; | |
607 | } | |
608 | ||
bb81bb68 EG |
609 | /* |
610 | * No need to lock amsdu_in_ampdu_allowed since it can't be modified | |
611 | * during an BA session. | |
612 | */ | |
613 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
614 | !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) { | |
a6d5e32f EG |
615 | num_subframes = 1; |
616 | pad = 0; | |
617 | goto segment; | |
618 | } | |
619 | ||
bb81bb68 | 620 | max_amsdu_len = sta->max_amsdu_len; |
9e7dce28 | 621 | dbg_max_amsdu_len = ACCESS_ONCE(mvm->max_amsdu_len); |
50b0213f EG |
622 | |
623 | /* the Tx FIFO to which this A-MSDU will be routed */ | |
624 | txf = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; | |
625 | ||
626 | /* | |
627 | * Don't send an AMSDU that will be longer than the TXF. | |
628 | * Add a security margin of 256 for the TX command + headers. | |
629 | * We also want to have the start of the next packet inside the | |
630 | * fifo to be able to send bursts. | |
631 | */ | |
632 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
633 | mvm->shared_mem_cfg.txfifo_size[txf] - 256); | |
634 | ||
9e7dce28 EG |
635 | if (dbg_max_amsdu_len) |
636 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
637 | dbg_max_amsdu_len); | |
bb81bb68 EG |
638 | |
639 | /* | |
640 | * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not | |
641 | * supported. This is a spec requirement (IEEE 802.11-2015 | |
642 | * section 8.7.3 NOTE 3). | |
643 | */ | |
644 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
645 | !sta->vht_cap.vht_supported) | |
646 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095); | |
647 | ||
a6d5e32f EG |
648 | /* Sub frame header + SNAP + IP header + TCP header + MSS */ |
649 | subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss; | |
650 | pad = (4 - subf_len) & 0x3; | |
651 | ||
652 | /* | |
653 | * If we have N subframes in the A-MSDU, then the A-MSDU's size is | |
654 | * N * subf_len + (N - 1) * pad. | |
655 | */ | |
bb81bb68 EG |
656 | num_subframes = (max_amsdu_len + pad) / (subf_len + pad); |
657 | if (num_subframes > 1) | |
a6d5e32f | 658 | *qc |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
a6d5e32f EG |
659 | |
660 | tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
661 | tcp_hdrlen(skb) + skb->data_len; | |
662 | ||
663 | /* | |
664 | * Make sure we have enough TBs for the A-MSDU: | |
665 | * 2 for each subframe | |
666 | * 1 more for each fragment | |
667 | * 1 more for the potential data in the header | |
668 | */ | |
669 | num_subframes = | |
670 | min_t(unsigned int, num_subframes, | |
671 | (mvm->trans->max_skb_frags - 1 - | |
672 | skb_shinfo(skb)->nr_frags) / 2); | |
673 | ||
674 | /* This skb fits in one single A-MSDU */ | |
675 | if (num_subframes * mss >= tcp_payload_len) { | |
676 | /* | |
677 | * Compute the length of all the data added for the A-MSDU. | |
678 | * This will be used to compute the length to write in the TX | |
679 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
680 | * ETH header for n subframes. Note that the original skb | |
681 | * already had one set of SNAP / IP / TCP headers. | |
682 | */ | |
683 | num_subframes = DIV_ROUND_UP(tcp_payload_len, mss); | |
684 | info = IEEE80211_SKB_CB(skb); | |
685 | amsdu_add = num_subframes * sizeof(struct ethhdr) + | |
686 | (num_subframes - 1) * (snap_ip_tcp + pad); | |
687 | /* This holds the amsdu headers length */ | |
688 | info->driver_data[0] = (void *)(uintptr_t)amsdu_add; | |
689 | ||
690 | __skb_queue_tail(mpdus_skb, skb); | |
691 | return 0; | |
692 | } | |
a3713f8b | 693 | |
a6d5e32f EG |
694 | /* |
695 | * Trick the segmentation function to make it | |
696 | * create SKBs that can fit into one A-MSDU. | |
697 | */ | |
698 | segment: | |
699 | skb_shinfo(skb)->gso_size = num_subframes * mss; | |
700 | memcpy(cb, skb->cb, sizeof(cb)); | |
701 | ||
5e6a98dc | 702 | next = skb_gso_segment(skb, netdev_features); |
a6d5e32f EG |
703 | skb_shinfo(skb)->gso_size = mss; |
704 | if (WARN_ON_ONCE(IS_ERR(next))) | |
a3713f8b EG |
705 | return -EINVAL; |
706 | else if (next) | |
a6d5e32f | 707 | consume_skb(skb); |
a3713f8b EG |
708 | |
709 | while (next) { | |
710 | tmp = next; | |
711 | next = tmp->next; | |
a6d5e32f | 712 | |
a3713f8b | 713 | memcpy(tmp->cb, cb, sizeof(tmp->cb)); |
a6d5e32f EG |
714 | /* |
715 | * Compute the length of all the data added for the A-MSDU. | |
716 | * This will be used to compute the length to write in the TX | |
717 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
718 | * ETH header for n subframes. | |
719 | */ | |
720 | tcp_payload_len = skb_tail_pointer(tmp) - | |
721 | skb_transport_header(tmp) - | |
722 | tcp_hdrlen(tmp) + tmp->data_len; | |
723 | ||
724 | if (ipv4) | |
725 | ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes); | |
726 | ||
727 | if (tcp_payload_len > mss) { | |
728 | num_subframes = DIV_ROUND_UP(tcp_payload_len, mss); | |
729 | info = IEEE80211_SKB_CB(tmp); | |
730 | amsdu_add = num_subframes * sizeof(struct ethhdr) + | |
731 | (num_subframes - 1) * (snap_ip_tcp + pad); | |
732 | info->driver_data[0] = (void *)(uintptr_t)amsdu_add; | |
733 | skb_shinfo(tmp)->gso_size = mss; | |
734 | } else { | |
bb81bb68 | 735 | qc = ieee80211_get_qos_ctl((void *)tmp->data); |
a6d5e32f EG |
736 | |
737 | if (ipv4) | |
738 | ip_send_check(ip_hdr(tmp)); | |
739 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
740 | skb_shinfo(tmp)->gso_size = 0; | |
741 | } | |
a3713f8b EG |
742 | |
743 | tmp->prev = NULL; | |
744 | tmp->next = NULL; | |
745 | ||
746 | __skb_queue_tail(mpdus_skb, tmp); | |
a6d5e32f | 747 | i++; |
a3713f8b EG |
748 | } |
749 | ||
750 | return 0; | |
751 | } | |
a6d5e32f EG |
752 | #else /* CONFIG_INET */ |
753 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
754 | struct ieee80211_sta *sta, | |
755 | struct sk_buff_head *mpdus_skb) | |
756 | { | |
757 | /* Impossible to get TSO with CONFIG_INET */ | |
758 | WARN_ON(1); | |
759 | ||
760 | return -1; | |
761 | } | |
762 | #endif | |
a3713f8b | 763 | |
24afba76 LK |
764 | static void iwl_mvm_tx_add_stream(struct iwl_mvm *mvm, |
765 | struct iwl_mvm_sta *mvm_sta, u8 tid, | |
766 | struct sk_buff *skb) | |
767 | { | |
768 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
769 | u8 mac_queue = info->hw_queue; | |
770 | struct sk_buff_head *deferred_tx_frames; | |
771 | ||
772 | lockdep_assert_held(&mvm_sta->lock); | |
773 | ||
774 | mvm_sta->deferred_traffic_tid_map |= BIT(tid); | |
775 | set_bit(mvm_sta->sta_id, mvm->sta_deferred_frames); | |
776 | ||
777 | deferred_tx_frames = &mvm_sta->tid_data[tid].deferred_tx_frames; | |
778 | ||
779 | skb_queue_tail(deferred_tx_frames, skb); | |
780 | ||
781 | /* | |
782 | * The first deferred frame should've stopped the MAC queues, so we | |
783 | * should never get a second deferred frame for the RA/TID. | |
784 | */ | |
785 | if (!WARN(skb_queue_len(deferred_tx_frames) != 1, | |
786 | "RATID %d/%d has %d deferred frames\n", mvm_sta->sta_id, tid, | |
787 | skb_queue_len(deferred_tx_frames))) { | |
788 | iwl_mvm_stop_mac_queues(mvm, BIT(mac_queue)); | |
789 | schedule_work(&mvm->add_stream_wk); | |
790 | } | |
791 | } | |
792 | ||
8ca151b5 JB |
793 | /* |
794 | * Sets the fields in the Tx cmd that are crypto related | |
795 | */ | |
a3713f8b EG |
796 | static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb, |
797 | struct ieee80211_sta *sta) | |
8ca151b5 JB |
798 | { |
799 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
800 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
801 | struct iwl_mvm_sta *mvmsta; | |
802 | struct iwl_device_cmd *dev_cmd; | |
803 | struct iwl_tx_cmd *tx_cmd; | |
804 | __le16 fc; | |
805 | u16 seq_number = 0; | |
806 | u8 tid = IWL_MAX_TID_COUNT; | |
807 | u8 txq_id = info->hw_queue; | |
7ec54716 | 808 | bool is_ampdu = false; |
ca8c0f4b | 809 | int hdrlen; |
8ca151b5 | 810 | |
5b577a90 | 811 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 812 | fc = hdr->frame_control; |
ca8c0f4b | 813 | hdrlen = ieee80211_hdrlen(fc); |
8ca151b5 JB |
814 | |
815 | if (WARN_ON_ONCE(!mvmsta)) | |
816 | return -1; | |
817 | ||
881acd89 | 818 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 JB |
819 | return -1; |
820 | ||
ca8c0f4b | 821 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, hdrlen, sta, mvmsta->sta_id); |
8ca151b5 JB |
822 | if (!dev_cmd) |
823 | goto drop; | |
824 | ||
825 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; | |
826 | /* From now on, we cannot access info->control */ | |
827 | ||
3e56eadf JB |
828 | /* |
829 | * we handle that entirely ourselves -- for uAPSD the firmware | |
830 | * will always send a notification, and for PS-Poll responses | |
831 | * we'll notify mac80211 when getting frame status | |
832 | */ | |
833 | info->flags &= ~IEEE80211_TX_STATUS_EOSP; | |
834 | ||
8ca151b5 JB |
835 | spin_lock(&mvmsta->lock); |
836 | ||
837 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { | |
838 | u8 *qc = NULL; | |
839 | qc = ieee80211_get_qos_ctl(hdr); | |
840 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
841 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
842 | goto drop_unlock_sta; | |
843 | ||
844 | seq_number = mvmsta->tid_data[tid].seq_number; | |
845 | seq_number &= IEEE80211_SCTL_SEQ; | |
846 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
847 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
8ca151b5 | 848 | is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU; |
24afba76 LK |
849 | } else if (iwl_mvm_is_dqa_supported(mvm) && |
850 | (ieee80211_is_qos_nullfunc(fc) || | |
851 | ieee80211_is_nullfunc(fc))) { | |
852 | /* | |
853 | * nullfunc frames should go to the MGMT queue regardless of QOS | |
854 | */ | |
855 | tid = IWL_MAX_TID_COUNT; | |
856 | txq_id = mvmsta->tid_data[tid].txq_id; | |
8ca151b5 JB |
857 | } |
858 | ||
859 | /* Copy MAC header from skb into command buffer */ | |
ca8c0f4b | 860 | memcpy(tx_cmd->hdr, hdr, hdrlen); |
8ca151b5 JB |
861 | |
862 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM); | |
863 | ||
a0f6bf2a AN |
864 | if (sta->tdls) { |
865 | /* default to TID 0 for non-QoS packets */ | |
866 | u8 tdls_tid = tid == IWL_MAX_TID_COUNT ? 0 : tid; | |
867 | ||
868 | txq_id = mvmsta->hw_queue[tid_to_mac80211_ac[tdls_tid]]; | |
869 | } | |
870 | ||
8ca151b5 JB |
871 | if (is_ampdu) { |
872 | if (WARN_ON_ONCE(mvmsta->tid_data[tid].state != IWL_AGG_ON)) | |
873 | goto drop_unlock_sta; | |
874 | txq_id = mvmsta->tid_data[tid].txq_id; | |
875 | } | |
876 | ||
24afba76 LK |
877 | if (iwl_mvm_is_dqa_supported(mvm)) { |
878 | if (unlikely(mvmsta->tid_data[tid].txq_id == | |
879 | IEEE80211_INVAL_HW_QUEUE)) { | |
880 | iwl_mvm_tx_add_stream(mvm, mvmsta, tid, skb); | |
881 | ||
882 | /* | |
883 | * The frame is now deferred, and the worker scheduled | |
884 | * will re-allocate it, so we can free it for now. | |
885 | */ | |
886 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
887 | spin_unlock(&mvmsta->lock); | |
888 | return 0; | |
889 | } | |
890 | ||
891 | txq_id = mvmsta->tid_data[tid].txq_id; | |
892 | } | |
893 | ||
8ca151b5 | 894 | IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id, |
cf9d1188 | 895 | tid, txq_id, IEEE80211_SEQ_TO_SN(seq_number)); |
8ca151b5 | 896 | |
8ca151b5 JB |
897 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id)) |
898 | goto drop_unlock_sta; | |
899 | ||
7ec54716 | 900 | if (tid < IWL_MAX_TID_COUNT && !ieee80211_has_morefrags(fc)) |
cf9d1188 | 901 | mvmsta->tid_data[tid].seq_number = seq_number + 0x10; |
8ca151b5 JB |
902 | |
903 | spin_unlock(&mvmsta->lock); | |
904 | ||
19e737c9 | 905 | if (txq_id < mvm->first_agg_queue) |
e3d4bc8c | 906 | atomic_inc(&mvm->pending_frames[mvmsta->sta_id]); |
8ca151b5 JB |
907 | |
908 | return 0; | |
909 | ||
910 | drop_unlock_sta: | |
911 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
912 | spin_unlock(&mvmsta->lock); | |
913 | drop: | |
914 | return -1; | |
915 | } | |
916 | ||
a3713f8b EG |
917 | int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, |
918 | struct ieee80211_sta *sta) | |
919 | { | |
920 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
a6d5e32f | 921 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
a3713f8b EG |
922 | struct sk_buff_head mpdus_skbs; |
923 | unsigned int payload_len; | |
924 | int ret; | |
925 | ||
926 | if (WARN_ON_ONCE(!mvmsta)) | |
927 | return -1; | |
928 | ||
929 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) | |
930 | return -1; | |
931 | ||
a6d5e32f EG |
932 | /* This holds the amsdu headers length */ |
933 | info->driver_data[0] = (void *)(uintptr_t)0; | |
934 | ||
a3713f8b EG |
935 | if (!skb_is_gso(skb)) |
936 | return iwl_mvm_tx_mpdu(mvm, skb, sta); | |
937 | ||
938 | payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
939 | tcp_hdrlen(skb) + skb->data_len; | |
940 | ||
941 | if (payload_len <= skb_shinfo(skb)->gso_size) | |
942 | return iwl_mvm_tx_mpdu(mvm, skb, sta); | |
943 | ||
944 | __skb_queue_head_init(&mpdus_skbs); | |
945 | ||
946 | ret = iwl_mvm_tx_tso(mvm, skb, sta, &mpdus_skbs); | |
947 | if (ret) | |
948 | return ret; | |
949 | ||
950 | if (WARN_ON(skb_queue_empty(&mpdus_skbs))) | |
951 | return ret; | |
952 | ||
953 | while (!skb_queue_empty(&mpdus_skbs)) { | |
a6d5e32f | 954 | skb = __skb_dequeue(&mpdus_skbs); |
a3713f8b EG |
955 | |
956 | ret = iwl_mvm_tx_mpdu(mvm, skb, sta); | |
957 | if (ret) { | |
958 | __skb_queue_purge(&mpdus_skbs); | |
959 | return ret; | |
960 | } | |
961 | } | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
8ca151b5 JB |
966 | static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm, |
967 | struct ieee80211_sta *sta, u8 tid) | |
968 | { | |
5b577a90 | 969 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
970 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
971 | struct ieee80211_vif *vif = mvmsta->vif; | |
972 | ||
973 | lockdep_assert_held(&mvmsta->lock); | |
974 | ||
3e56eadf JB |
975 | if ((tid_data->state == IWL_AGG_ON || |
976 | tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) && | |
977 | iwl_mvm_tid_queued(tid_data) == 0) { | |
978 | /* | |
979 | * Now that this aggregation queue is empty tell mac80211 so it | |
980 | * knows we no longer have frames buffered for the station on | |
981 | * this TID (for the TIM bitmap calculation.) | |
982 | */ | |
983 | ieee80211_sta_set_buffered(sta, tid, false); | |
984 | } | |
985 | ||
8ca151b5 JB |
986 | if (tid_data->ssn != tid_data->next_reclaimed) |
987 | return; | |
988 | ||
989 | switch (tid_data->state) { | |
990 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
991 | IWL_DEBUG_TX_QUEUES(mvm, | |
992 | "Can continue addBA flow ssn = next_recl = %d\n", | |
993 | tid_data->next_reclaimed); | |
994 | tid_data->state = IWL_AGG_STARTING; | |
995 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
996 | break; | |
997 | ||
998 | case IWL_EMPTYING_HW_QUEUE_DELBA: | |
999 | IWL_DEBUG_TX_QUEUES(mvm, | |
1000 | "Can continue DELBA flow ssn = next_recl = %d\n", | |
1001 | tid_data->next_reclaimed); | |
4ecafae9 LK |
1002 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
1003 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
1004 | CMD_ASYNC); | |
8ca151b5 | 1005 | tid_data->state = IWL_AGG_OFF; |
8ca151b5 JB |
1006 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
1007 | break; | |
1008 | ||
1009 | default: | |
1010 | break; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1015 | const char *iwl_mvm_get_tx_fail_reason(u32 status) | |
1016 | { | |
1017 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x | |
1018 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
1019 | ||
1020 | switch (status & TX_STATUS_MSK) { | |
1021 | case TX_STATUS_SUCCESS: | |
1022 | return "SUCCESS"; | |
1023 | TX_STATUS_POSTPONE(DELAY); | |
1024 | TX_STATUS_POSTPONE(FEW_BYTES); | |
1025 | TX_STATUS_POSTPONE(BT_PRIO); | |
1026 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
1027 | TX_STATUS_POSTPONE(CALC_TTAK); | |
1028 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
1029 | TX_STATUS_FAIL(SHORT_LIMIT); | |
1030 | TX_STATUS_FAIL(LONG_LIMIT); | |
1031 | TX_STATUS_FAIL(UNDERRUN); | |
1032 | TX_STATUS_FAIL(DRAIN_FLOW); | |
1033 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
1034 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
1035 | TX_STATUS_FAIL(DEST_PS); | |
1036 | TX_STATUS_FAIL(HOST_ABORTED); | |
1037 | TX_STATUS_FAIL(BT_RETRY); | |
1038 | TX_STATUS_FAIL(STA_INVALID); | |
1039 | TX_STATUS_FAIL(FRAG_DROPPED); | |
1040 | TX_STATUS_FAIL(TID_DISABLE); | |
1041 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
1042 | TX_STATUS_FAIL(SMALL_CF_POLL); | |
1043 | TX_STATUS_FAIL(FW_DROP); | |
1044 | TX_STATUS_FAIL(STA_COLOR_MISMATCH); | |
1045 | } | |
1046 | ||
1047 | return "UNKNOWN"; | |
1048 | ||
1049 | #undef TX_STATUS_FAIL | |
1050 | #undef TX_STATUS_POSTPONE | |
1051 | } | |
1052 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1053 | ||
d310e405 | 1054 | void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags, |
57fbcce3 | 1055 | enum nl80211_band band, |
d310e405 | 1056 | struct ieee80211_tx_rate *r) |
8ca151b5 | 1057 | { |
8ca151b5 JB |
1058 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
1059 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
1060 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
1061 | case RATE_MCS_CHAN_WIDTH_20: | |
1062 | break; | |
1063 | case RATE_MCS_CHAN_WIDTH_40: | |
1064 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
1065 | break; | |
1066 | case RATE_MCS_CHAN_WIDTH_80: | |
1067 | r->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH; | |
1068 | break; | |
1069 | case RATE_MCS_CHAN_WIDTH_160: | |
1070 | r->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH; | |
1071 | break; | |
1072 | } | |
1073 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
1074 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
1075 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
1076 | r->flags |= IEEE80211_TX_RC_MCS; | |
1077 | r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
1078 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { | |
1079 | ieee80211_rate_set_vht( | |
1080 | r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK, | |
1081 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
1082 | RATE_VHT_MCS_NSS_POS) + 1); | |
1083 | r->flags |= IEEE80211_TX_RC_VHT_MCS; | |
1084 | } else { | |
1085 | r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, | |
d310e405 | 1086 | band); |
8ca151b5 JB |
1087 | } |
1088 | } | |
1089 | ||
d310e405 ES |
1090 | /** |
1091 | * translate ucode response to mac80211 tx status control values | |
1092 | */ | |
1093 | static void iwl_mvm_hwrate_to_tx_status(u32 rate_n_flags, | |
1094 | struct ieee80211_tx_info *info) | |
1095 | { | |
1096 | struct ieee80211_tx_rate *r = &info->status.rates[0]; | |
1097 | ||
1098 | info->status.antenna = | |
1099 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
1100 | iwl_mvm_hwrate_to_tx_rate(rate_n_flags, info->band, r); | |
1101 | } | |
1102 | ||
25657fec GBA |
1103 | static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm, |
1104 | u32 status) | |
1105 | { | |
1106 | struct iwl_fw_dbg_trigger_tlv *trig; | |
1107 | struct iwl_fw_dbg_trigger_tx_status *status_trig; | |
1108 | int i; | |
1109 | ||
1110 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TX_STATUS)) | |
1111 | return; | |
1112 | ||
1113 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TX_STATUS); | |
1114 | status_trig = (void *)trig->data; | |
1115 | ||
1116 | if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) | |
1117 | return; | |
1118 | ||
1119 | for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) { | |
1120 | /* don't collect on status 0 */ | |
1121 | if (!status_trig->statuses[i].status) | |
1122 | break; | |
1123 | ||
1124 | if (status_trig->statuses[i].status != (status & TX_STATUS_MSK)) | |
1125 | continue; | |
1126 | ||
1127 | iwl_mvm_fw_dbg_collect_trig(mvm, trig, | |
1128 | "Tx status %d was received", | |
1129 | status & TX_STATUS_MSK); | |
1130 | break; | |
1131 | } | |
1132 | } | |
1133 | ||
8ca151b5 JB |
1134 | static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, |
1135 | struct iwl_rx_packet *pkt) | |
1136 | { | |
1137 | struct ieee80211_sta *sta; | |
1138 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1139 | int txq_id = SEQ_TO_QUEUE(sequence); | |
1140 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1141 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1142 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1143 | u32 status = le16_to_cpu(tx_resp->status.status); | |
1144 | u16 ssn = iwl_mvm_get_scd_ssn(tx_resp); | |
1145 | struct iwl_mvm_sta *mvmsta; | |
1146 | struct sk_buff_head skbs; | |
1147 | u8 skb_freed = 0; | |
1148 | u16 next_reclaimed, seq_ctl; | |
532beba3 | 1149 | bool is_ndp = false; |
8ca151b5 JB |
1150 | |
1151 | __skb_queue_head_init(&skbs); | |
1152 | ||
1153 | seq_ctl = le16_to_cpu(tx_resp->seq_ctl); | |
1154 | ||
1155 | /* we can free until ssn % q.n_bd not inclusive */ | |
1156 | iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs); | |
1157 | ||
1158 | while (!skb_queue_empty(&skbs)) { | |
1159 | struct sk_buff *skb = __skb_dequeue(&skbs); | |
1160 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
1161 | ||
1162 | skb_freed++; | |
1163 | ||
1164 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
1165 | ||
1166 | memset(&info->status, 0, sizeof(info->status)); | |
1167 | ||
1168 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
1169 | ||
1170 | /* inform mac80211 about what happened with the frame */ | |
1171 | switch (status & TX_STATUS_MSK) { | |
1172 | case TX_STATUS_SUCCESS: | |
1173 | case TX_STATUS_DIRECT_DONE: | |
1174 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1175 | break; | |
1176 | case TX_STATUS_FAIL_DEST_PS: | |
1177 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; | |
1178 | break; | |
1179 | default: | |
1180 | break; | |
1181 | } | |
1182 | ||
25657fec GBA |
1183 | iwl_mvm_tx_status_check_trigger(mvm, status); |
1184 | ||
8ca151b5 | 1185 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
d310e405 ES |
1186 | iwl_mvm_hwrate_to_tx_status(le32_to_cpu(tx_resp->initial_rate), |
1187 | info); | |
929e6ede ES |
1188 | info->status.status_driver_data[1] = |
1189 | (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate); | |
8ca151b5 JB |
1190 | |
1191 | /* Single frame failure in an AMPDU queue => send BAR */ | |
19e737c9 | 1192 | if (txq_id >= mvm->first_agg_queue && |
9ce578a5 ES |
1193 | !(info->flags & IEEE80211_TX_STAT_ACK) && |
1194 | !(info->flags & IEEE80211_TX_STAT_TX_FILTERED)) | |
8ca151b5 | 1195 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
8ca151b5 | 1196 | |
ebea2f32 EG |
1197 | /* W/A FW bug: seq_ctl is wrong when the status isn't success */ |
1198 | if (status != TX_STATUS_SUCCESS) { | |
8ca151b5 JB |
1199 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1200 | seq_ctl = le16_to_cpu(hdr->seq_ctrl); | |
1201 | } | |
1202 | ||
532beba3 EG |
1203 | if (unlikely(!seq_ctl)) { |
1204 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1205 | ||
1206 | /* | |
1207 | * If it is an NDP, we can't update next_reclaim since | |
1208 | * its sequence control is 0. Note that for that same | |
1209 | * reason, NDPs are never sent to A-MPDU'able queues | |
1210 | * so that we can never have more than one freed frame | |
1211 | * for a single Tx resonse (see WARN_ON below). | |
1212 | */ | |
1213 | if (ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1214 | is_ndp = true; | |
1215 | } | |
1216 | ||
9b5452fd EG |
1217 | /* |
1218 | * TODO: this is not accurate if we are freeing more than one | |
1219 | * packet. | |
1220 | */ | |
1221 | info->status.tx_time = | |
1222 | le16_to_cpu(tx_resp->wireless_media_time); | |
3a84b69e EP |
1223 | BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1); |
1224 | info->status.status_driver_data[0] = | |
1225 | (void *)(uintptr_t)tx_resp->reduced_tpc; | |
1226 | ||
f14d6b39 | 1227 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 JB |
1228 | } |
1229 | ||
19e737c9 | 1230 | if (txq_id >= mvm->first_agg_queue) { |
8ca151b5 JB |
1231 | /* If this is an aggregation queue, we use the ssn since: |
1232 | * ssn = wifi seq_num % 256. | |
1233 | * The seq_ctl is the sequence control of the packet to which | |
1234 | * this Tx response relates. But if there is a hole in the | |
1235 | * bitmap of the BA we received, this Tx response may allow to | |
1236 | * reclaim the hole and all the subsequent packets that were | |
1237 | * already acked. In that case, seq_ctl != ssn, and the next | |
1238 | * packet to be reclaimed will be ssn and not seq_ctl. In that | |
1239 | * case, several packets will be reclaimed even if | |
1240 | * frame_count = 1. | |
1241 | * | |
1242 | * The ssn is the index (% 256) of the latest packet that has | |
1243 | * treated (acked / dropped) + 1. | |
1244 | */ | |
1245 | next_reclaimed = ssn; | |
1246 | } else { | |
1247 | /* The next packet to be reclaimed is the one after this one */ | |
9a886586 | 1248 | next_reclaimed = IEEE80211_SEQ_TO_SN(seq_ctl + 0x10); |
8ca151b5 JB |
1249 | } |
1250 | ||
1251 | IWL_DEBUG_TX_REPLY(mvm, | |
8c6e83d6 EG |
1252 | "TXQ %d status %s (0x%08x)\n", |
1253 | txq_id, iwl_mvm_get_tx_fail_reason(status), status); | |
1254 | ||
1255 | IWL_DEBUG_TX_REPLY(mvm, | |
1256 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n", | |
1257 | le32_to_cpu(tx_resp->initial_rate), | |
8ca151b5 JB |
1258 | tx_resp->failure_frame, SEQ_TO_INDEX(sequence), |
1259 | ssn, next_reclaimed, seq_ctl); | |
1260 | ||
1261 | rcu_read_lock(); | |
1262 | ||
1263 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
9bb0c1ad EG |
1264 | /* |
1265 | * sta can't be NULL otherwise it'd mean that the sta has been freed in | |
1266 | * the firmware while we still have packets for it in the Tx queues. | |
1267 | */ | |
1268 | if (WARN_ON_ONCE(!sta)) | |
1269 | goto out; | |
8ca151b5 | 1270 | |
9bb0c1ad | 1271 | if (!IS_ERR(sta)) { |
5b577a90 | 1272 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1273 | |
1274 | if (tid != IWL_TID_NON_QOS) { | |
1275 | struct iwl_mvm_tid_data *tid_data = | |
1276 | &mvmsta->tid_data[tid]; | |
36be0eb6 | 1277 | bool send_eosp_ndp = false; |
8ca151b5 | 1278 | |
2bfb5092 | 1279 | spin_lock_bh(&mvmsta->lock); |
532beba3 EG |
1280 | if (!is_ndp) { |
1281 | tid_data->next_reclaimed = next_reclaimed; | |
1282 | IWL_DEBUG_TX_REPLY(mvm, | |
1283 | "Next reclaimed packet:%d\n", | |
1284 | next_reclaimed); | |
1285 | } else { | |
1286 | IWL_DEBUG_TX_REPLY(mvm, | |
1287 | "NDP - don't update next_reclaimed\n"); | |
1288 | } | |
1289 | ||
8ca151b5 | 1290 | iwl_mvm_check_ratid_empty(mvm, sta, tid); |
36be0eb6 EG |
1291 | |
1292 | if (mvmsta->sleep_tx_count) { | |
1293 | mvmsta->sleep_tx_count--; | |
1294 | if (mvmsta->sleep_tx_count && | |
1295 | !iwl_mvm_tid_queued(tid_data)) { | |
1296 | /* | |
1297 | * The number of frames in the queue | |
1298 | * dropped to 0 even if we sent less | |
1299 | * frames than we thought we had on the | |
1300 | * Tx queue. | |
1301 | * This means we had holes in the BA | |
1302 | * window that we just filled, ask | |
1303 | * mac80211 to send EOSP since the | |
1304 | * firmware won't know how to do that. | |
1305 | * Send NDP and the firmware will send | |
1306 | * EOSP notification that will trigger | |
1307 | * a call to ieee80211_sta_eosp(). | |
1308 | */ | |
1309 | send_eosp_ndp = true; | |
1310 | } | |
1311 | } | |
1312 | ||
2bfb5092 | 1313 | spin_unlock_bh(&mvmsta->lock); |
36be0eb6 EG |
1314 | if (send_eosp_ndp) { |
1315 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, | |
1316 | IEEE80211_FRAME_RELEASE_UAPSD, | |
1317 | 1, tid, false, false); | |
1318 | mvmsta->sleep_tx_count = 0; | |
1319 | ieee80211_send_eosp_nullfunc(sta, tid); | |
1320 | } | |
8ca151b5 | 1321 | } |
3e56eadf JB |
1322 | |
1323 | if (mvmsta->next_status_eosp) { | |
1324 | mvmsta->next_status_eosp = false; | |
1325 | ieee80211_sta_eosp(sta); | |
1326 | } | |
8ca151b5 | 1327 | } else { |
8ca151b5 JB |
1328 | mvmsta = NULL; |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * If the txq is not an AMPDU queue, there is no chance we freed | |
1333 | * several skbs. Check that out... | |
8ca151b5 | 1334 | */ |
9bb0c1ad EG |
1335 | if (txq_id >= mvm->first_agg_queue) |
1336 | goto out; | |
1337 | ||
1338 | /* We can't free more than one frame at once on a shared queue */ | |
1339 | WARN_ON(skb_freed > 1); | |
1340 | ||
589a6ba4 | 1341 | /* If we have still frames for this STA nothing to do here */ |
9bb0c1ad EG |
1342 | if (!atomic_sub_and_test(skb_freed, &mvm->pending_frames[sta_id])) |
1343 | goto out; | |
1344 | ||
1345 | if (mvmsta && mvmsta->vif->type == NL80211_IFTYPE_AP) { | |
003e5236 | 1346 | |
9bb0c1ad | 1347 | /* |
003e5236 AO |
1348 | * If there are no pending frames for this STA and |
1349 | * the tx to this station is not disabled, notify | |
1350 | * mac80211 that this station can now wake up in its | |
9bb0c1ad EG |
1351 | * STA table. |
1352 | * If mvmsta is not NULL, sta is valid. | |
1353 | */ | |
003e5236 AO |
1354 | |
1355 | spin_lock_bh(&mvmsta->lock); | |
1356 | ||
1357 | if (!mvmsta->disable_tx) | |
1358 | ieee80211_sta_block_awake(mvm->hw, sta, false); | |
1359 | ||
1360 | spin_unlock_bh(&mvmsta->lock); | |
9bb0c1ad EG |
1361 | } |
1362 | ||
1363 | if (PTR_ERR(sta) == -EBUSY || PTR_ERR(sta) == -ENOENT) { | |
1364 | /* | |
1365 | * We are draining and this was the last packet - pre_rcu_remove | |
1366 | * has been called already. We might be after the | |
1367 | * synchronize_net already. | |
1368 | * Don't rely on iwl_mvm_rm_sta to see the empty Tx queues. | |
1369 | */ | |
1370 | set_bit(sta_id, mvm->sta_drained); | |
1371 | schedule_work(&mvm->sta_drained_wk); | |
8ca151b5 JB |
1372 | } |
1373 | ||
9bb0c1ad | 1374 | out: |
8ca151b5 JB |
1375 | rcu_read_unlock(); |
1376 | } | |
1377 | ||
1378 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1379 | #define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x | |
1380 | static const char *iwl_get_agg_tx_status(u16 status) | |
1381 | { | |
1382 | switch (status & AGG_TX_STATE_STATUS_MSK) { | |
1383 | AGG_TX_STATE_(TRANSMITTED); | |
1384 | AGG_TX_STATE_(UNDERRUN); | |
1385 | AGG_TX_STATE_(BT_PRIO); | |
1386 | AGG_TX_STATE_(FEW_BYTES); | |
1387 | AGG_TX_STATE_(ABORT); | |
1388 | AGG_TX_STATE_(LAST_SENT_TTL); | |
1389 | AGG_TX_STATE_(LAST_SENT_TRY_CNT); | |
1390 | AGG_TX_STATE_(LAST_SENT_BT_KILL); | |
1391 | AGG_TX_STATE_(SCD_QUERY); | |
1392 | AGG_TX_STATE_(TEST_BAD_CRC32); | |
1393 | AGG_TX_STATE_(RESPONSE); | |
1394 | AGG_TX_STATE_(DUMP_TX); | |
1395 | AGG_TX_STATE_(DELAY_TX); | |
1396 | } | |
1397 | ||
1398 | return "UNKNOWN"; | |
1399 | } | |
1400 | ||
1401 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1402 | struct iwl_rx_packet *pkt) | |
1403 | { | |
1404 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1405 | struct agg_tx_status *frame_status = &tx_resp->status; | |
1406 | int i; | |
1407 | ||
1408 | for (i = 0; i < tx_resp->frame_count; i++) { | |
1409 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
1410 | ||
1411 | IWL_DEBUG_TX_REPLY(mvm, | |
1412 | "status %s (0x%04x), try-count (%d) seq (0x%x)\n", | |
1413 | iwl_get_agg_tx_status(fstatus), | |
1414 | fstatus & AGG_TX_STATE_STATUS_MSK, | |
1415 | (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >> | |
1416 | AGG_TX_STATE_TRY_CNT_POS, | |
1417 | le16_to_cpu(frame_status[i].sequence)); | |
1418 | } | |
1419 | } | |
1420 | #else | |
1421 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1422 | struct iwl_rx_packet *pkt) | |
1423 | {} | |
1424 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1425 | ||
1426 | static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm, | |
1427 | struct iwl_rx_packet *pkt) | |
1428 | { | |
1429 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1430 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1431 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1432 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1433 | struct ieee80211_sta *sta; | |
1434 | ||
19e737c9 | 1435 | if (WARN_ON_ONCE(SEQ_TO_QUEUE(sequence) < mvm->first_agg_queue)) |
8ca151b5 JB |
1436 | return; |
1437 | ||
1438 | if (WARN_ON_ONCE(tid == IWL_TID_NON_QOS)) | |
1439 | return; | |
1440 | ||
1441 | iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt); | |
1442 | ||
1443 | rcu_read_lock(); | |
1444 | ||
1445 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1446 | ||
1447 | if (!WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
5b577a90 | 1448 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1449 | mvmsta->tid_data[tid].rate_n_flags = |
1450 | le32_to_cpu(tx_resp->initial_rate); | |
9b5452fd EG |
1451 | mvmsta->tid_data[tid].tx_time = |
1452 | le16_to_cpu(tx_resp->wireless_media_time); | |
8ca151b5 JB |
1453 | } |
1454 | ||
1455 | rcu_read_unlock(); | |
1456 | } | |
1457 | ||
0416841d | 1458 | void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
1459 | { |
1460 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1461 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1462 | ||
1463 | if (tx_resp->frame_count == 1) | |
1464 | iwl_mvm_rx_tx_cmd_single(mvm, pkt); | |
1465 | else | |
1466 | iwl_mvm_rx_tx_cmd_agg(mvm, pkt); | |
8ca151b5 JB |
1467 | } |
1468 | ||
a7130442 ES |
1469 | static void iwl_mvm_tx_info_from_ba_notif(struct ieee80211_tx_info *info, |
1470 | struct iwl_mvm_ba_notif *ba_notif, | |
1471 | struct iwl_mvm_tid_data *tid_data) | |
1472 | { | |
1473 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1474 | info->status.ampdu_ack_len = ba_notif->txed_2_done; | |
1475 | info->status.ampdu_len = ba_notif->txed; | |
1476 | iwl_mvm_hwrate_to_tx_status(tid_data->rate_n_flags, | |
1477 | info); | |
9b5452fd EG |
1478 | /* TODO: not accounted if the whole A-MPDU failed */ |
1479 | info->status.tx_time = tid_data->tx_time; | |
a7130442 | 1480 | info->status.status_driver_data[0] = |
69c7fda4 | 1481 | (void *)(uintptr_t)ba_notif->reduced_txp; |
929e6ede ES |
1482 | info->status.status_driver_data[1] = |
1483 | (void *)(uintptr_t)tid_data->rate_n_flags; | |
a7130442 ES |
1484 | } |
1485 | ||
0416841d | 1486 | void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
1487 | { |
1488 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1489 | struct iwl_mvm_ba_notif *ba_notif = (void *)pkt->data; | |
1490 | struct sk_buff_head reclaimed_skbs; | |
1491 | struct iwl_mvm_tid_data *tid_data; | |
8ca151b5 JB |
1492 | struct ieee80211_sta *sta; |
1493 | struct iwl_mvm_sta *mvmsta; | |
8ca151b5 JB |
1494 | struct sk_buff *skb; |
1495 | int sta_id, tid, freed; | |
8ca151b5 JB |
1496 | /* "flow" corresponds to Tx queue */ |
1497 | u16 scd_flow = le16_to_cpu(ba_notif->scd_flow); | |
8ca151b5 JB |
1498 | /* "ssn" is start of block-ack Tx window, corresponds to index |
1499 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1500 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_notif->scd_ssn); | |
1501 | ||
1502 | sta_id = ba_notif->sta_id; | |
1503 | tid = ba_notif->tid; | |
1504 | ||
2cee4762 ES |
1505 | if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT || |
1506 | tid >= IWL_MAX_TID_COUNT, | |
1507 | "sta_id %d tid %d", sta_id, tid)) | |
0416841d | 1508 | return; |
2cee4762 | 1509 | |
8ca151b5 JB |
1510 | rcu_read_lock(); |
1511 | ||
1512 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1513 | ||
1514 | /* Reclaiming frames for a station that has been deleted ? */ | |
1515 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
1516 | rcu_read_unlock(); | |
0416841d | 1517 | return; |
8ca151b5 JB |
1518 | } |
1519 | ||
5b577a90 | 1520 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1521 | tid_data = &mvmsta->tid_data[tid]; |
1522 | ||
1f16ea29 JB |
1523 | if (tid_data->txq_id != scd_flow) { |
1524 | IWL_ERR(mvm, | |
1525 | "invalid BA notification: Q %d, tid %d, flow %d\n", | |
1526 | tid_data->txq_id, tid, scd_flow); | |
8ca151b5 | 1527 | rcu_read_unlock(); |
0416841d | 1528 | return; |
8ca151b5 JB |
1529 | } |
1530 | ||
2bfb5092 | 1531 | spin_lock_bh(&mvmsta->lock); |
8ca151b5 JB |
1532 | |
1533 | __skb_queue_head_init(&reclaimed_skbs); | |
1534 | ||
1535 | /* | |
1536 | * Release all TFDs before the SSN, i.e. all TFDs in front of | |
1537 | * block-ack window (we assume that they've been successfully | |
1538 | * transmitted ... if not, it's too late anyway). | |
1539 | */ | |
1540 | iwl_trans_reclaim(mvm->trans, scd_flow, ba_resp_scd_ssn, | |
1541 | &reclaimed_skbs); | |
1542 | ||
1543 | IWL_DEBUG_TX_REPLY(mvm, | |
1544 | "BA_NOTIFICATION Received from %pM, sta_id = %d\n", | |
1545 | (u8 *)&ba_notif->sta_addr_lo32, | |
1546 | ba_notif->sta_id); | |
1547 | IWL_DEBUG_TX_REPLY(mvm, | |
1548 | "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", | |
1549 | ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl), | |
1550 | (unsigned long long)le64_to_cpu(ba_notif->bitmap), | |
1551 | scd_flow, ba_resp_scd_ssn, ba_notif->txed, | |
1552 | ba_notif->txed_2_done); | |
1553 | ||
69c7fda4 GG |
1554 | IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n", |
1555 | ba_notif->reduced_txp); | |
8ca151b5 JB |
1556 | tid_data->next_reclaimed = ba_resp_scd_ssn; |
1557 | ||
1558 | iwl_mvm_check_ratid_empty(mvm, sta, tid); | |
1559 | ||
1560 | freed = 0; | |
1561 | ||
1562 | skb_queue_walk(&reclaimed_skbs, skb) { | |
143582c6 JB |
1563 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1564 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
8ca151b5 JB |
1565 | |
1566 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
1567 | freed++; | |
1568 | else | |
1569 | WARN_ON_ONCE(1); | |
1570 | ||
8ca151b5 JB |
1571 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); |
1572 | ||
143582c6 JB |
1573 | memset(&info->status, 0, sizeof(info->status)); |
1574 | /* Packet was transmitted successfully, failures come as single | |
1575 | * frames because before failing a frame the firmware transmits | |
1576 | * it without aggregation at least once. | |
1577 | */ | |
1578 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1579 | ||
a7130442 ES |
1580 | /* this is the first skb we deliver in this batch */ |
1581 | /* put the rate scaling data there */ | |
1582 | if (freed == 1) | |
1583 | iwl_mvm_tx_info_from_ba_notif(info, ba_notif, tid_data); | |
8ca151b5 JB |
1584 | } |
1585 | ||
2bfb5092 | 1586 | spin_unlock_bh(&mvmsta->lock); |
8ca151b5 | 1587 | |
a7130442 ES |
1588 | /* We got a BA notif with 0 acked or scd_ssn didn't progress which is |
1589 | * possible (i.e. first MPDU in the aggregation wasn't acked) | |
1590 | * Still it's important to update RS about sent vs. acked. | |
1591 | */ | |
1592 | if (skb_queue_empty(&reclaimed_skbs)) { | |
1593 | struct ieee80211_tx_info ba_info = {}; | |
1594 | struct ieee80211_chanctx_conf *chanctx_conf = NULL; | |
1595 | ||
1596 | if (mvmsta->vif) | |
1597 | chanctx_conf = | |
1598 | rcu_dereference(mvmsta->vif->chanctx_conf); | |
1599 | ||
1600 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1601 | goto out; | |
1602 | ||
1603 | ba_info.band = chanctx_conf->def.chan->band; | |
1604 | iwl_mvm_tx_info_from_ba_notif(&ba_info, ba_notif, tid_data); | |
1605 | ||
1606 | IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n"); | |
1607 | iwl_mvm_rs_tx_status(mvm, sta, tid, &ba_info); | |
1608 | } | |
1609 | ||
1610 | out: | |
8ca151b5 JB |
1611 | rcu_read_unlock(); |
1612 | ||
1613 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1614 | skb = __skb_dequeue(&reclaimed_skbs); | |
f14d6b39 | 1615 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 | 1616 | } |
8ca151b5 JB |
1617 | } |
1618 | ||
fe92e32a EG |
1619 | /* |
1620 | * Note that there are transports that buffer frames before they reach | |
1621 | * the firmware. This means that after flush_tx_path is called, the | |
1622 | * queue might not be empty. The race-free way to handle this is to: | |
1623 | * 1) set the station as draining | |
1624 | * 2) flush the Tx path | |
1625 | * 3) wait for the transport queues to be empty | |
1626 | */ | |
5888a40c | 1627 | int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, u32 flags) |
8ca151b5 JB |
1628 | { |
1629 | int ret; | |
1630 | struct iwl_tx_path_flush_cmd flush_cmd = { | |
1631 | .queues_ctl = cpu_to_le32(tfd_msk), | |
1632 | .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH), | |
1633 | }; | |
1634 | ||
8ca151b5 JB |
1635 | ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags, |
1636 | sizeof(flush_cmd), &flush_cmd); | |
1637 | if (ret) | |
1638 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); | |
1639 | return ret; | |
1640 | } |