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> |
8ca151b5 JB |
70 | |
71 | #include "iwl-trans.h" | |
72 | #include "iwl-eeprom-parse.h" | |
73 | #include "mvm.h" | |
74 | #include "sta.h" | |
2f89a5d7 | 75 | #include "fw-dbg.h" |
8ca151b5 | 76 | |
4203263d EG |
77 | static void |
78 | iwl_mvm_bar_check_trigger(struct iwl_mvm *mvm, const u8 *addr, | |
79 | u16 tid, u16 ssn) | |
80 | { | |
81 | struct iwl_fw_dbg_trigger_tlv *trig; | |
82 | struct iwl_fw_dbg_trigger_ba *ba_trig; | |
83 | ||
84 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_BA)) | |
85 | return; | |
86 | ||
87 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_BA); | |
88 | ba_trig = (void *)trig->data; | |
89 | ||
90 | if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) | |
91 | return; | |
92 | ||
93 | if (!(le16_to_cpu(ba_trig->tx_bar) & BIT(tid))) | |
94 | return; | |
95 | ||
96 | iwl_mvm_fw_dbg_collect_trig(mvm, trig, | |
97 | "BAR sent to %pM, tid %d, ssn %d", | |
98 | addr, tid, ssn); | |
99 | } | |
100 | ||
8ca151b5 JB |
101 | /* |
102 | * Sets most of the Tx cmd's fields | |
103 | */ | |
6ce73e65 AN |
104 | void iwl_mvm_set_tx_cmd(struct iwl_mvm *mvm, struct sk_buff *skb, |
105 | struct iwl_tx_cmd *tx_cmd, | |
106 | struct ieee80211_tx_info *info, u8 sta_id) | |
8ca151b5 JB |
107 | { |
108 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
109 | __le16 fc = hdr->frame_control; | |
110 | u32 tx_flags = le32_to_cpu(tx_cmd->tx_flags); | |
111 | u32 len = skb->len + FCS_LEN; | |
b797e3fb | 112 | u8 ac; |
8ca151b5 JB |
113 | |
114 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
115 | tx_flags |= TX_CMD_FLG_ACK; | |
116 | else | |
117 | tx_flags &= ~TX_CMD_FLG_ACK; | |
118 | ||
119 | if (ieee80211_is_probe_resp(fc)) | |
120 | tx_flags |= TX_CMD_FLG_TSF; | |
8ca151b5 | 121 | |
8ca151b5 JB |
122 | if (ieee80211_has_morefrags(fc)) |
123 | tx_flags |= TX_CMD_FLG_MORE_FRAG; | |
124 | ||
125 | if (ieee80211_is_data_qos(fc)) { | |
126 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
127 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
128 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
d8fe4844 SS |
129 | if (*qc & IEEE80211_QOS_CTL_A_MSDU_PRESENT) |
130 | tx_cmd->offload_assist |= | |
131 | cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)); | |
9b3b43d8 ES |
132 | } else if (ieee80211_is_back_req(fc)) { |
133 | struct ieee80211_bar *bar = (void *)skb->data; | |
134 | u16 control = le16_to_cpu(bar->control); | |
4203263d | 135 | u16 ssn = le16_to_cpu(bar->start_seq_num); |
9b3b43d8 ES |
136 | |
137 | tx_flags |= TX_CMD_FLG_ACK | TX_CMD_FLG_BAR; | |
138 | tx_cmd->tid_tspec = (control & | |
139 | IEEE80211_BAR_CTRL_TID_INFO_MASK) >> | |
140 | IEEE80211_BAR_CTRL_TID_INFO_SHIFT; | |
141 | WARN_ON_ONCE(tx_cmd->tid_tspec >= IWL_MAX_TID_COUNT); | |
4203263d EG |
142 | iwl_mvm_bar_check_trigger(mvm, bar->ra, tx_cmd->tid_tspec, |
143 | ssn); | |
8ca151b5 JB |
144 | } else { |
145 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; | |
146 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) | |
147 | tx_flags |= TX_CMD_FLG_SEQ_CTL; | |
148 | else | |
149 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL; | |
150 | } | |
151 | ||
a9dc5060 ES |
152 | /* Default to 0 (BE) when tid_spec is set to IWL_TID_NON_QOS */ |
153 | if (tx_cmd->tid_tspec < IWL_MAX_TID_COUNT) | |
154 | ac = tid_to_mac80211_ac[tx_cmd->tid_tspec]; | |
155 | else | |
156 | ac = tid_to_mac80211_ac[0]; | |
157 | ||
b797e3fb EG |
158 | tx_flags |= iwl_mvm_bt_coex_tx_prio(mvm, hdr, info, ac) << |
159 | TX_CMD_FLG_BT_PRIO_POS; | |
160 | ||
8ca151b5 JB |
161 | if (ieee80211_is_mgmt(fc)) { |
162 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
b084a356 AA |
163 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_ASSOC); |
164 | else if (ieee80211_is_action(fc)) | |
165 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); | |
8ca151b5 | 166 | else |
b084a356 | 167 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 JB |
168 | |
169 | /* The spec allows Action frames in A-MPDU, we don't support | |
170 | * it | |
171 | */ | |
172 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU); | |
63f7535d | 173 | } else if (info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO) { |
b084a356 | 174 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_MGMT); |
8ca151b5 | 175 | } else { |
b084a356 | 176 | tx_cmd->pm_frame_timeout = cpu_to_le16(PM_FRAME_NONE); |
8ca151b5 JB |
177 | } |
178 | ||
8ca151b5 JB |
179 | if (ieee80211_is_data(fc) && len > mvm->rts_threshold && |
180 | !is_multicast_ether_addr(ieee80211_get_DA(hdr))) | |
181 | tx_flags |= TX_CMD_FLG_PROT_REQUIRE; | |
182 | ||
859d914c JB |
183 | if (fw_has_capa(&mvm->fw->ucode_capa, |
184 | IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT) && | |
f1daa00e AO |
185 | ieee80211_action_contains_tpc(skb)) |
186 | tx_flags |= TX_CMD_FLG_WRITE_TX_POWER; | |
187 | ||
8ca151b5 JB |
188 | tx_cmd->tx_flags = cpu_to_le32(tx_flags); |
189 | /* Total # bytes to be transmitted */ | |
a6d5e32f EG |
190 | tx_cmd->len = cpu_to_le16((u16)skb->len + |
191 | (uintptr_t)info->driver_data[0]); | |
8ca151b5 JB |
192 | tx_cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); |
193 | tx_cmd->sta_id = sta_id; | |
d8fe4844 SS |
194 | |
195 | /* padding is inserted later in transport */ | |
196 | if (ieee80211_hdrlen(fc) % 4 && | |
197 | !(tx_cmd->offload_assist & cpu_to_le16(BIT(TX_CMD_OFFLD_AMSDU)))) | |
198 | tx_cmd->offload_assist |= cpu_to_le16(BIT(TX_CMD_OFFLD_PAD)); | |
8ca151b5 JB |
199 | } |
200 | ||
201 | /* | |
202 | * Sets the fields in the Tx cmd that are rate related | |
203 | */ | |
6ce73e65 AN |
204 | void iwl_mvm_set_tx_cmd_rate(struct iwl_mvm *mvm, struct iwl_tx_cmd *tx_cmd, |
205 | struct ieee80211_tx_info *info, | |
206 | struct ieee80211_sta *sta, __le16 fc) | |
8ca151b5 JB |
207 | { |
208 | u32 rate_flags; | |
209 | int rate_idx; | |
210 | u8 rate_plcp; | |
211 | ||
212 | /* Set retry limit on RTS packets */ | |
213 | tx_cmd->rts_retry_limit = IWL_RTS_DFAULT_RETRY_LIMIT; | |
214 | ||
215 | /* Set retry limit on DATA packets and Probe Responses*/ | |
216 | if (ieee80211_is_probe_resp(fc)) { | |
217 | tx_cmd->data_retry_limit = IWL_MGMT_DFAULT_RETRY_LIMIT; | |
218 | tx_cmd->rts_retry_limit = | |
219 | min(tx_cmd->data_retry_limit, tx_cmd->rts_retry_limit); | |
220 | } else if (ieee80211_is_back_req(fc)) { | |
221 | tx_cmd->data_retry_limit = IWL_BAR_DFAULT_RETRY_LIMIT; | |
222 | } else { | |
223 | tx_cmd->data_retry_limit = IWL_DEFAULT_TX_RETRY; | |
224 | } | |
225 | ||
226 | /* | |
e89044d7 | 227 | * for data packets, rate info comes from the table inside the fw. This |
1ffde699 | 228 | * table is controlled by LINK_QUALITY commands |
8ca151b5 JB |
229 | */ |
230 | ||
1ffde699 | 231 | if (ieee80211_is_data(fc) && sta) { |
8ca151b5 JB |
232 | tx_cmd->initial_rate_index = 0; |
233 | tx_cmd->tx_flags |= cpu_to_le32(TX_CMD_FLG_STA_RATE); | |
234 | return; | |
235 | } else if (ieee80211_is_back_req(fc)) { | |
2edc6ec6 EG |
236 | tx_cmd->tx_flags |= |
237 | cpu_to_le32(TX_CMD_FLG_ACK | TX_CMD_FLG_BAR); | |
8ca151b5 JB |
238 | } |
239 | ||
240 | /* HT rate doesn't make sense for a non data frame */ | |
241 | WARN_ONCE(info->control.rates[0].flags & IEEE80211_TX_RC_MCS, | |
f85e9d19 JB |
242 | "Got an HT rate (flags:0x%x/mcs:%d) for a non data frame (fc:0x%x)\n", |
243 | info->control.rates[0].flags, | |
244 | info->control.rates[0].idx, | |
245 | le16_to_cpu(fc)); | |
8ca151b5 JB |
246 | |
247 | rate_idx = info->control.rates[0].idx; | |
248 | /* if the rate isn't a well known legacy rate, take the lowest one */ | |
249 | if (rate_idx < 0 || rate_idx > IWL_RATE_COUNT_LEGACY) | |
250 | rate_idx = rate_lowest_index( | |
251 | &mvm->nvm_data->bands[info->band], sta); | |
252 | ||
253 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ | |
254 | if (info->band == IEEE80211_BAND_5GHZ) | |
255 | rate_idx += IWL_FIRST_OFDM_RATE; | |
256 | ||
257 | /* For 2.4 GHZ band, check that there is no need to remap */ | |
258 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
259 | ||
260 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
261 | rate_plcp = iwl_mvm_mac80211_idx_to_hwrate(rate_idx); | |
262 | ||
263 | mvm->mgmt_last_antenna_idx = | |
a0544272 | 264 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 | 265 | mvm->mgmt_last_antenna_idx); |
34c8b24f EG |
266 | |
267 | if (info->band == IEEE80211_BAND_2GHZ && | |
268 | !iwl_mvm_bt_coex_is_shared_ant_avail(mvm)) | |
923a8c1d | 269 | rate_flags = mvm->cfg->non_shared_ant << RATE_MCS_ANT_POS; |
34c8b24f EG |
270 | else |
271 | rate_flags = | |
272 | BIT(mvm->mgmt_last_antenna_idx) << RATE_MCS_ANT_POS; | |
8ca151b5 JB |
273 | |
274 | /* Set CCK flag as needed */ | |
275 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
276 | rate_flags |= RATE_MCS_CCK_MSK; | |
277 | ||
278 | /* Set the rate in the TX cmd */ | |
279 | tx_cmd->rate_n_flags = cpu_to_le32((u32)rate_plcp | rate_flags); | |
280 | } | |
281 | ||
282 | /* | |
283 | * Sets the fields in the Tx cmd that are crypto related | |
284 | */ | |
ca8c0f4b JB |
285 | static void iwl_mvm_set_tx_cmd_crypto(struct iwl_mvm *mvm, |
286 | struct ieee80211_tx_info *info, | |
287 | struct iwl_tx_cmd *tx_cmd, | |
288 | struct sk_buff *skb_frag, | |
289 | int hdrlen) | |
8ca151b5 JB |
290 | { |
291 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
ca8c0f4b JB |
292 | u8 *crypto_hdr = skb_frag->data + hdrlen; |
293 | u64 pn; | |
8ca151b5 JB |
294 | |
295 | switch (keyconf->cipher) { | |
296 | case WLAN_CIPHER_SUITE_CCMP: | |
ca8c0f4b JB |
297 | case WLAN_CIPHER_SUITE_CCMP_256: |
298 | iwl_mvm_set_tx_cmd_ccmp(info, tx_cmd); | |
299 | pn = atomic64_inc_return(&keyconf->tx_pn); | |
300 | crypto_hdr[0] = pn; | |
301 | crypto_hdr[2] = 0; | |
302 | crypto_hdr[3] = 0x20 | (keyconf->keyidx << 6); | |
303 | crypto_hdr[1] = pn >> 8; | |
304 | crypto_hdr[4] = pn >> 16; | |
305 | crypto_hdr[5] = pn >> 24; | |
306 | crypto_hdr[6] = pn >> 32; | |
307 | crypto_hdr[7] = pn >> 40; | |
8ca151b5 JB |
308 | break; |
309 | ||
310 | case WLAN_CIPHER_SUITE_TKIP: | |
311 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; | |
1ad4f639 EP |
312 | pn = atomic64_inc_return(&keyconf->tx_pn); |
313 | ieee80211_tkip_add_iv(crypto_hdr, keyconf, pn); | |
8ca151b5 JB |
314 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
315 | break; | |
316 | ||
317 | case WLAN_CIPHER_SUITE_WEP104: | |
318 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
319 | /* fall through */ | |
320 | case WLAN_CIPHER_SUITE_WEP40: | |
321 | tx_cmd->sec_ctl |= TX_CMD_SEC_WEP | | |
322 | ((keyconf->keyidx << TX_CMD_SEC_WEP_KEY_IDX_POS) & | |
323 | TX_CMD_SEC_WEP_KEY_IDX_MSK); | |
324 | ||
325 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); | |
326 | break; | |
327 | default: | |
e36e5433 | 328 | tx_cmd->sec_ctl |= TX_CMD_SEC_EXT; |
8ca151b5 JB |
329 | } |
330 | } | |
331 | ||
332 | /* | |
333 | * Allocates and sets the Tx cmd the driver data pointers in the skb | |
334 | */ | |
335 | static struct iwl_device_cmd * | |
336 | iwl_mvm_set_tx_params(struct iwl_mvm *mvm, struct sk_buff *skb, | |
ca8c0f4b | 337 | int hdrlen, struct ieee80211_sta *sta, u8 sta_id) |
8ca151b5 JB |
338 | { |
339 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
340 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
341 | struct iwl_device_cmd *dev_cmd; | |
342 | struct iwl_tx_cmd *tx_cmd; | |
343 | ||
344 | dev_cmd = iwl_trans_alloc_tx_cmd(mvm->trans); | |
345 | ||
346 | if (unlikely(!dev_cmd)) | |
347 | return NULL; | |
348 | ||
349 | memset(dev_cmd, 0, sizeof(*dev_cmd)); | |
3961a61a | 350 | dev_cmd->hdr.cmd = TX_CMD; |
8ca151b5 JB |
351 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; |
352 | ||
353 | if (info->control.hw_key) | |
ca8c0f4b | 354 | iwl_mvm_set_tx_cmd_crypto(mvm, info, tx_cmd, skb, hdrlen); |
8ca151b5 JB |
355 | |
356 | iwl_mvm_set_tx_cmd(mvm, skb, tx_cmd, info, sta_id); | |
357 | ||
358 | iwl_mvm_set_tx_cmd_rate(mvm, tx_cmd, info, sta, hdr->frame_control); | |
359 | ||
360 | memset(&info->status, 0, sizeof(info->status)); | |
3f73b8ca | 361 | memset(info->driver_data, 0, sizeof(info->driver_data)); |
8ca151b5 | 362 | |
8ca151b5 JB |
363 | info->driver_data[1] = dev_cmd; |
364 | ||
365 | return dev_cmd; | |
366 | } | |
367 | ||
368 | int iwl_mvm_tx_skb_non_sta(struct iwl_mvm *mvm, struct sk_buff *skb) | |
369 | { | |
370 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
371 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
372 | struct iwl_device_cmd *dev_cmd; | |
373 | struct iwl_tx_cmd *tx_cmd; | |
374 | u8 sta_id; | |
ca8c0f4b | 375 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); |
8ca151b5 JB |
376 | |
377 | if (WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_AMPDU)) | |
378 | return -1; | |
379 | ||
380 | if (WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && | |
381 | (!info->control.vif || | |
382 | info->hw_queue != info->control.vif->cab_queue))) | |
383 | return -1; | |
384 | ||
a6d5e32f EG |
385 | /* This holds the amsdu headers length */ |
386 | info->driver_data[0] = (void *)(uintptr_t)0; | |
387 | ||
7da91b0e AM |
388 | /* |
389 | * IWL_MVM_OFFCHANNEL_QUEUE is used for ROC packets that can be used | |
390 | * in 2 different types of vifs, P2P & STATION. P2P uses the offchannel | |
391 | * queue. STATION (HS2.0) uses the auxiliary context of the FW, | |
392 | * and hence needs to be sent on the aux queue | |
393 | */ | |
394 | if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE && | |
395 | info->control.vif->type == NL80211_IFTYPE_STATION) | |
396 | IEEE80211_SKB_CB(skb)->hw_queue = mvm->aux_queue; | |
397 | ||
8ca151b5 | 398 | /* |
d0ab08d0 | 399 | * If the interface on which the frame is sent is the P2P_DEVICE |
8ca151b5 | 400 | * or an AP/GO interface use the broadcast station associated |
d0ab08d0 IP |
401 | * with it; otherwise if the interface is a managed interface |
402 | * use the AP station associated with it for multicast traffic | |
403 | * (this is not possible for unicast packets as a TLDS discovery | |
404 | * response are sent without a station entry); otherwise use the | |
405 | * AUX station. | |
8ca151b5 | 406 | */ |
d0ab08d0 IP |
407 | sta_id = mvm->aux_sta.sta_id; |
408 | if (info->control.vif) { | |
8ca151b5 JB |
409 | struct iwl_mvm_vif *mvmvif = |
410 | iwl_mvm_vif_from_mac80211(info->control.vif); | |
d0ab08d0 IP |
411 | |
412 | if (info->control.vif->type == NL80211_IFTYPE_P2P_DEVICE || | |
413 | info->control.vif->type == NL80211_IFTYPE_AP) | |
414 | sta_id = mvmvif->bcast_sta.sta_id; | |
415 | else if (info->control.vif->type == NL80211_IFTYPE_STATION && | |
416 | is_multicast_ether_addr(hdr->addr1)) { | |
417 | u8 ap_sta_id = ACCESS_ONCE(mvmvif->ap_sta_id); | |
418 | ||
419 | if (ap_sta_id != IWL_MVM_STATION_COUNT) | |
420 | sta_id = ap_sta_id; | |
421 | } | |
8ca151b5 JB |
422 | } |
423 | ||
424 | IWL_DEBUG_TX(mvm, "station Id %d, queue=%d\n", sta_id, info->hw_queue); | |
425 | ||
ca8c0f4b | 426 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, hdrlen, NULL, sta_id); |
8ca151b5 JB |
427 | if (!dev_cmd) |
428 | return -1; | |
429 | ||
430 | /* From now on, we cannot access info->control */ | |
431 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; | |
432 | ||
433 | /* Copy MAC header from skb into command buffer */ | |
ca8c0f4b | 434 | memcpy(tx_cmd->hdr, hdr, hdrlen); |
8ca151b5 JB |
435 | |
436 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, info->hw_queue)) { | |
437 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
438 | return -1; | |
439 | } | |
440 | ||
fb896c44 LK |
441 | /* |
442 | * Increase the pending frames counter, so that later when a reply comes | |
443 | * in and the counter is decreased - we don't start getting negative | |
444 | * values. | |
445 | * Note that we don't need to make sure it isn't agg'd, since we're | |
446 | * TXing non-sta | |
447 | */ | |
448 | atomic_inc(&mvm->pending_frames[sta_id]); | |
449 | ||
8ca151b5 JB |
450 | return 0; |
451 | } | |
452 | ||
a6d5e32f EG |
453 | #ifdef CONFIG_INET |
454 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
a3713f8b EG |
455 | struct ieee80211_sta *sta, |
456 | struct sk_buff_head *mpdus_skb) | |
457 | { | |
bb81bb68 | 458 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
a6d5e32f EG |
459 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
460 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
461 | unsigned int mss = skb_shinfo(skb)->gso_size; | |
a3713f8b | 462 | struct sk_buff *tmp, *next; |
a6d5e32f | 463 | char cb[sizeof(skb->cb)]; |
bb81bb68 | 464 | unsigned int num_subframes, tcp_payload_len, subf_len, max_amsdu_len; |
a6d5e32f EG |
465 | bool ipv4 = (skb->protocol == htons(ETH_P_IP)); |
466 | u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0; | |
467 | u16 amsdu_add, snap_ip_tcp, pad, i = 0; | |
9e7dce28 | 468 | unsigned int dbg_max_amsdu_len; |
50b0213f | 469 | u8 *qc, tid, txf; |
a6d5e32f EG |
470 | |
471 | snap_ip_tcp = 8 + skb_transport_header(skb) - skb_network_header(skb) + | |
472 | tcp_hdrlen(skb); | |
473 | ||
bb81bb68 EG |
474 | qc = ieee80211_get_qos_ctl(hdr); |
475 | tid = *qc & IEEE80211_QOS_CTL_TID_MASK; | |
476 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
477 | return -EINVAL; | |
478 | ||
a6d5e32f | 479 | if (!sta->max_amsdu_len || |
04e3a5da EG |
480 | !ieee80211_is_data_qos(hdr->frame_control) || |
481 | !mvmsta->tlc_amsdu) { | |
a6d5e32f EG |
482 | num_subframes = 1; |
483 | pad = 0; | |
484 | goto segment; | |
485 | } | |
486 | ||
bb81bb68 EG |
487 | /* |
488 | * No need to lock amsdu_in_ampdu_allowed since it can't be modified | |
489 | * during an BA session. | |
490 | */ | |
491 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
492 | !mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) { | |
a6d5e32f EG |
493 | num_subframes = 1; |
494 | pad = 0; | |
495 | goto segment; | |
496 | } | |
497 | ||
bb81bb68 | 498 | max_amsdu_len = sta->max_amsdu_len; |
9e7dce28 | 499 | dbg_max_amsdu_len = ACCESS_ONCE(mvm->max_amsdu_len); |
50b0213f EG |
500 | |
501 | /* the Tx FIFO to which this A-MSDU will be routed */ | |
502 | txf = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]]; | |
503 | ||
504 | /* | |
505 | * Don't send an AMSDU that will be longer than the TXF. | |
506 | * Add a security margin of 256 for the TX command + headers. | |
507 | * We also want to have the start of the next packet inside the | |
508 | * fifo to be able to send bursts. | |
509 | */ | |
510 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
511 | mvm->shared_mem_cfg.txfifo_size[txf] - 256); | |
512 | ||
9e7dce28 EG |
513 | if (dbg_max_amsdu_len) |
514 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, | |
515 | dbg_max_amsdu_len); | |
bb81bb68 EG |
516 | |
517 | /* | |
518 | * Limit A-MSDU in A-MPDU to 4095 bytes when VHT is not | |
519 | * supported. This is a spec requirement (IEEE 802.11-2015 | |
520 | * section 8.7.3 NOTE 3). | |
521 | */ | |
522 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
523 | !sta->vht_cap.vht_supported) | |
524 | max_amsdu_len = min_t(unsigned int, max_amsdu_len, 4095); | |
525 | ||
a6d5e32f EG |
526 | /* Sub frame header + SNAP + IP header + TCP header + MSS */ |
527 | subf_len = sizeof(struct ethhdr) + snap_ip_tcp + mss; | |
528 | pad = (4 - subf_len) & 0x3; | |
529 | ||
530 | /* | |
531 | * If we have N subframes in the A-MSDU, then the A-MSDU's size is | |
532 | * N * subf_len + (N - 1) * pad. | |
533 | */ | |
bb81bb68 EG |
534 | num_subframes = (max_amsdu_len + pad) / (subf_len + pad); |
535 | if (num_subframes > 1) | |
a6d5e32f | 536 | *qc |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; |
a6d5e32f EG |
537 | |
538 | tcp_payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
539 | tcp_hdrlen(skb) + skb->data_len; | |
540 | ||
541 | /* | |
542 | * Make sure we have enough TBs for the A-MSDU: | |
543 | * 2 for each subframe | |
544 | * 1 more for each fragment | |
545 | * 1 more for the potential data in the header | |
546 | */ | |
547 | num_subframes = | |
548 | min_t(unsigned int, num_subframes, | |
549 | (mvm->trans->max_skb_frags - 1 - | |
550 | skb_shinfo(skb)->nr_frags) / 2); | |
551 | ||
552 | /* This skb fits in one single A-MSDU */ | |
553 | if (num_subframes * mss >= tcp_payload_len) { | |
554 | /* | |
555 | * Compute the length of all the data added for the A-MSDU. | |
556 | * This will be used to compute the length to write in the TX | |
557 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
558 | * ETH header for n subframes. Note that the original skb | |
559 | * already had one set of SNAP / IP / TCP headers. | |
560 | */ | |
561 | num_subframes = DIV_ROUND_UP(tcp_payload_len, mss); | |
562 | info = IEEE80211_SKB_CB(skb); | |
563 | amsdu_add = num_subframes * sizeof(struct ethhdr) + | |
564 | (num_subframes - 1) * (snap_ip_tcp + pad); | |
565 | /* This holds the amsdu headers length */ | |
566 | info->driver_data[0] = (void *)(uintptr_t)amsdu_add; | |
567 | ||
568 | __skb_queue_tail(mpdus_skb, skb); | |
569 | return 0; | |
570 | } | |
a3713f8b | 571 | |
a6d5e32f EG |
572 | /* |
573 | * Trick the segmentation function to make it | |
574 | * create SKBs that can fit into one A-MSDU. | |
575 | */ | |
576 | segment: | |
577 | skb_shinfo(skb)->gso_size = num_subframes * mss; | |
578 | memcpy(cb, skb->cb, sizeof(cb)); | |
579 | ||
580 | next = skb_gso_segment(skb, NETIF_F_CSUM_MASK | NETIF_F_SG); | |
581 | skb_shinfo(skb)->gso_size = mss; | |
582 | if (WARN_ON_ONCE(IS_ERR(next))) | |
a3713f8b EG |
583 | return -EINVAL; |
584 | else if (next) | |
a6d5e32f | 585 | consume_skb(skb); |
a3713f8b EG |
586 | |
587 | while (next) { | |
588 | tmp = next; | |
589 | next = tmp->next; | |
a6d5e32f | 590 | |
a3713f8b | 591 | memcpy(tmp->cb, cb, sizeof(tmp->cb)); |
a6d5e32f EG |
592 | /* |
593 | * Compute the length of all the data added for the A-MSDU. | |
594 | * This will be used to compute the length to write in the TX | |
595 | * command. We have: SNAP + IP + TCP for n -1 subframes and | |
596 | * ETH header for n subframes. | |
597 | */ | |
598 | tcp_payload_len = skb_tail_pointer(tmp) - | |
599 | skb_transport_header(tmp) - | |
600 | tcp_hdrlen(tmp) + tmp->data_len; | |
601 | ||
602 | if (ipv4) | |
603 | ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes); | |
604 | ||
605 | if (tcp_payload_len > mss) { | |
606 | num_subframes = DIV_ROUND_UP(tcp_payload_len, mss); | |
607 | info = IEEE80211_SKB_CB(tmp); | |
608 | amsdu_add = num_subframes * sizeof(struct ethhdr) + | |
609 | (num_subframes - 1) * (snap_ip_tcp + pad); | |
610 | info->driver_data[0] = (void *)(uintptr_t)amsdu_add; | |
611 | skb_shinfo(tmp)->gso_size = mss; | |
612 | } else { | |
bb81bb68 | 613 | qc = ieee80211_get_qos_ctl((void *)tmp->data); |
a6d5e32f EG |
614 | |
615 | if (ipv4) | |
616 | ip_send_check(ip_hdr(tmp)); | |
617 | *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT; | |
618 | skb_shinfo(tmp)->gso_size = 0; | |
619 | } | |
a3713f8b EG |
620 | |
621 | tmp->prev = NULL; | |
622 | tmp->next = NULL; | |
623 | ||
624 | __skb_queue_tail(mpdus_skb, tmp); | |
a6d5e32f | 625 | i++; |
a3713f8b EG |
626 | } |
627 | ||
628 | return 0; | |
629 | } | |
a6d5e32f EG |
630 | #else /* CONFIG_INET */ |
631 | static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb, | |
632 | struct ieee80211_sta *sta, | |
633 | struct sk_buff_head *mpdus_skb) | |
634 | { | |
635 | /* Impossible to get TSO with CONFIG_INET */ | |
636 | WARN_ON(1); | |
637 | ||
638 | return -1; | |
639 | } | |
640 | #endif | |
a3713f8b | 641 | |
8ca151b5 JB |
642 | /* |
643 | * Sets the fields in the Tx cmd that are crypto related | |
644 | */ | |
a3713f8b EG |
645 | static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb, |
646 | struct ieee80211_sta *sta) | |
8ca151b5 JB |
647 | { |
648 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
649 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
650 | struct iwl_mvm_sta *mvmsta; | |
651 | struct iwl_device_cmd *dev_cmd; | |
652 | struct iwl_tx_cmd *tx_cmd; | |
653 | __le16 fc; | |
654 | u16 seq_number = 0; | |
655 | u8 tid = IWL_MAX_TID_COUNT; | |
656 | u8 txq_id = info->hw_queue; | |
657 | bool is_data_qos = false, is_ampdu = false; | |
ca8c0f4b | 658 | int hdrlen; |
8ca151b5 | 659 | |
5b577a90 | 660 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 | 661 | fc = hdr->frame_control; |
ca8c0f4b | 662 | hdrlen = ieee80211_hdrlen(fc); |
8ca151b5 JB |
663 | |
664 | if (WARN_ON_ONCE(!mvmsta)) | |
665 | return -1; | |
666 | ||
881acd89 | 667 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) |
8ca151b5 JB |
668 | return -1; |
669 | ||
ca8c0f4b | 670 | dev_cmd = iwl_mvm_set_tx_params(mvm, skb, hdrlen, sta, mvmsta->sta_id); |
8ca151b5 JB |
671 | if (!dev_cmd) |
672 | goto drop; | |
673 | ||
674 | tx_cmd = (struct iwl_tx_cmd *)dev_cmd->payload; | |
675 | /* From now on, we cannot access info->control */ | |
676 | ||
3e56eadf JB |
677 | /* |
678 | * we handle that entirely ourselves -- for uAPSD the firmware | |
679 | * will always send a notification, and for PS-Poll responses | |
680 | * we'll notify mac80211 when getting frame status | |
681 | */ | |
682 | info->flags &= ~IEEE80211_TX_STATUS_EOSP; | |
683 | ||
8ca151b5 JB |
684 | spin_lock(&mvmsta->lock); |
685 | ||
686 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { | |
687 | u8 *qc = NULL; | |
688 | qc = ieee80211_get_qos_ctl(hdr); | |
689 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
690 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
691 | goto drop_unlock_sta; | |
692 | ||
693 | seq_number = mvmsta->tid_data[tid].seq_number; | |
694 | seq_number &= IEEE80211_SCTL_SEQ; | |
695 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
696 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
8ca151b5 JB |
697 | is_data_qos = true; |
698 | is_ampdu = info->flags & IEEE80211_TX_CTL_AMPDU; | |
699 | } | |
700 | ||
701 | /* Copy MAC header from skb into command buffer */ | |
ca8c0f4b | 702 | memcpy(tx_cmd->hdr, hdr, hdrlen); |
8ca151b5 JB |
703 | |
704 | WARN_ON_ONCE(info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM); | |
705 | ||
a0f6bf2a AN |
706 | if (sta->tdls) { |
707 | /* default to TID 0 for non-QoS packets */ | |
708 | u8 tdls_tid = tid == IWL_MAX_TID_COUNT ? 0 : tid; | |
709 | ||
710 | txq_id = mvmsta->hw_queue[tid_to_mac80211_ac[tdls_tid]]; | |
711 | } | |
712 | ||
8ca151b5 JB |
713 | if (is_ampdu) { |
714 | if (WARN_ON_ONCE(mvmsta->tid_data[tid].state != IWL_AGG_ON)) | |
715 | goto drop_unlock_sta; | |
716 | txq_id = mvmsta->tid_data[tid].txq_id; | |
717 | } | |
718 | ||
719 | IWL_DEBUG_TX(mvm, "TX to [%d|%d] Q:%d - seq: 0x%x\n", mvmsta->sta_id, | |
cf9d1188 | 720 | tid, txq_id, IEEE80211_SEQ_TO_SN(seq_number)); |
8ca151b5 | 721 | |
8ca151b5 JB |
722 | if (iwl_trans_tx(mvm->trans, skb, dev_cmd, txq_id)) |
723 | goto drop_unlock_sta; | |
724 | ||
725 | if (is_data_qos && !ieee80211_has_morefrags(fc)) | |
cf9d1188 | 726 | mvmsta->tid_data[tid].seq_number = seq_number + 0x10; |
8ca151b5 JB |
727 | |
728 | spin_unlock(&mvmsta->lock); | |
729 | ||
19e737c9 | 730 | if (txq_id < mvm->first_agg_queue) |
e3d4bc8c | 731 | atomic_inc(&mvm->pending_frames[mvmsta->sta_id]); |
8ca151b5 JB |
732 | |
733 | return 0; | |
734 | ||
735 | drop_unlock_sta: | |
736 | iwl_trans_free_tx_cmd(mvm->trans, dev_cmd); | |
737 | spin_unlock(&mvmsta->lock); | |
738 | drop: | |
739 | return -1; | |
740 | } | |
741 | ||
a3713f8b EG |
742 | int iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb, |
743 | struct ieee80211_sta *sta) | |
744 | { | |
745 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); | |
a6d5e32f | 746 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
a3713f8b EG |
747 | struct sk_buff_head mpdus_skbs; |
748 | unsigned int payload_len; | |
749 | int ret; | |
750 | ||
751 | if (WARN_ON_ONCE(!mvmsta)) | |
752 | return -1; | |
753 | ||
754 | if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_STATION_COUNT)) | |
755 | return -1; | |
756 | ||
a6d5e32f EG |
757 | /* This holds the amsdu headers length */ |
758 | info->driver_data[0] = (void *)(uintptr_t)0; | |
759 | ||
a3713f8b EG |
760 | if (!skb_is_gso(skb)) |
761 | return iwl_mvm_tx_mpdu(mvm, skb, sta); | |
762 | ||
763 | payload_len = skb_tail_pointer(skb) - skb_transport_header(skb) - | |
764 | tcp_hdrlen(skb) + skb->data_len; | |
765 | ||
766 | if (payload_len <= skb_shinfo(skb)->gso_size) | |
767 | return iwl_mvm_tx_mpdu(mvm, skb, sta); | |
768 | ||
769 | __skb_queue_head_init(&mpdus_skbs); | |
770 | ||
771 | ret = iwl_mvm_tx_tso(mvm, skb, sta, &mpdus_skbs); | |
772 | if (ret) | |
773 | return ret; | |
774 | ||
775 | if (WARN_ON(skb_queue_empty(&mpdus_skbs))) | |
776 | return ret; | |
777 | ||
778 | while (!skb_queue_empty(&mpdus_skbs)) { | |
a6d5e32f | 779 | skb = __skb_dequeue(&mpdus_skbs); |
a3713f8b EG |
780 | |
781 | ret = iwl_mvm_tx_mpdu(mvm, skb, sta); | |
782 | if (ret) { | |
783 | __skb_queue_purge(&mpdus_skbs); | |
784 | return ret; | |
785 | } | |
786 | } | |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
8ca151b5 JB |
791 | static void iwl_mvm_check_ratid_empty(struct iwl_mvm *mvm, |
792 | struct ieee80211_sta *sta, u8 tid) | |
793 | { | |
5b577a90 | 794 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
795 | struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid]; |
796 | struct ieee80211_vif *vif = mvmsta->vif; | |
797 | ||
798 | lockdep_assert_held(&mvmsta->lock); | |
799 | ||
3e56eadf JB |
800 | if ((tid_data->state == IWL_AGG_ON || |
801 | tid_data->state == IWL_EMPTYING_HW_QUEUE_DELBA) && | |
802 | iwl_mvm_tid_queued(tid_data) == 0) { | |
803 | /* | |
804 | * Now that this aggregation queue is empty tell mac80211 so it | |
805 | * knows we no longer have frames buffered for the station on | |
806 | * this TID (for the TIM bitmap calculation.) | |
807 | */ | |
808 | ieee80211_sta_set_buffered(sta, tid, false); | |
809 | } | |
810 | ||
8ca151b5 JB |
811 | if (tid_data->ssn != tid_data->next_reclaimed) |
812 | return; | |
813 | ||
814 | switch (tid_data->state) { | |
815 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
816 | IWL_DEBUG_TX_QUEUES(mvm, | |
817 | "Can continue addBA flow ssn = next_recl = %d\n", | |
818 | tid_data->next_reclaimed); | |
819 | tid_data->state = IWL_AGG_STARTING; | |
820 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
821 | break; | |
822 | ||
823 | case IWL_EMPTYING_HW_QUEUE_DELBA: | |
824 | IWL_DEBUG_TX_QUEUES(mvm, | |
825 | "Can continue DELBA flow ssn = next_recl = %d\n", | |
826 | tid_data->next_reclaimed); | |
4ecafae9 LK |
827 | iwl_mvm_disable_txq(mvm, tid_data->txq_id, |
828 | vif->hw_queue[tid_to_mac80211_ac[tid]], tid, | |
829 | CMD_ASYNC); | |
8ca151b5 | 830 | tid_data->state = IWL_AGG_OFF; |
8ca151b5 JB |
831 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
832 | break; | |
833 | ||
834 | default: | |
835 | break; | |
836 | } | |
837 | } | |
838 | ||
839 | #ifdef CONFIG_IWLWIFI_DEBUG | |
840 | const char *iwl_mvm_get_tx_fail_reason(u32 status) | |
841 | { | |
842 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x | |
843 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
844 | ||
845 | switch (status & TX_STATUS_MSK) { | |
846 | case TX_STATUS_SUCCESS: | |
847 | return "SUCCESS"; | |
848 | TX_STATUS_POSTPONE(DELAY); | |
849 | TX_STATUS_POSTPONE(FEW_BYTES); | |
850 | TX_STATUS_POSTPONE(BT_PRIO); | |
851 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
852 | TX_STATUS_POSTPONE(CALC_TTAK); | |
853 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
854 | TX_STATUS_FAIL(SHORT_LIMIT); | |
855 | TX_STATUS_FAIL(LONG_LIMIT); | |
856 | TX_STATUS_FAIL(UNDERRUN); | |
857 | TX_STATUS_FAIL(DRAIN_FLOW); | |
858 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
859 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
860 | TX_STATUS_FAIL(DEST_PS); | |
861 | TX_STATUS_FAIL(HOST_ABORTED); | |
862 | TX_STATUS_FAIL(BT_RETRY); | |
863 | TX_STATUS_FAIL(STA_INVALID); | |
864 | TX_STATUS_FAIL(FRAG_DROPPED); | |
865 | TX_STATUS_FAIL(TID_DISABLE); | |
866 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
867 | TX_STATUS_FAIL(SMALL_CF_POLL); | |
868 | TX_STATUS_FAIL(FW_DROP); | |
869 | TX_STATUS_FAIL(STA_COLOR_MISMATCH); | |
870 | } | |
871 | ||
872 | return "UNKNOWN"; | |
873 | ||
874 | #undef TX_STATUS_FAIL | |
875 | #undef TX_STATUS_POSTPONE | |
876 | } | |
877 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
878 | ||
d310e405 ES |
879 | void iwl_mvm_hwrate_to_tx_rate(u32 rate_n_flags, |
880 | enum ieee80211_band band, | |
881 | struct ieee80211_tx_rate *r) | |
8ca151b5 | 882 | { |
8ca151b5 JB |
883 | if (rate_n_flags & RATE_HT_MCS_GF_MSK) |
884 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
885 | switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) { | |
886 | case RATE_MCS_CHAN_WIDTH_20: | |
887 | break; | |
888 | case RATE_MCS_CHAN_WIDTH_40: | |
889 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
890 | break; | |
891 | case RATE_MCS_CHAN_WIDTH_80: | |
892 | r->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH; | |
893 | break; | |
894 | case RATE_MCS_CHAN_WIDTH_160: | |
895 | r->flags |= IEEE80211_TX_RC_160_MHZ_WIDTH; | |
896 | break; | |
897 | } | |
898 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
899 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
900 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
901 | r->flags |= IEEE80211_TX_RC_MCS; | |
902 | r->idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK; | |
903 | } else if (rate_n_flags & RATE_MCS_VHT_MSK) { | |
904 | ieee80211_rate_set_vht( | |
905 | r, rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK, | |
906 | ((rate_n_flags & RATE_VHT_MCS_NSS_MSK) >> | |
907 | RATE_VHT_MCS_NSS_POS) + 1); | |
908 | r->flags |= IEEE80211_TX_RC_VHT_MCS; | |
909 | } else { | |
910 | r->idx = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags, | |
d310e405 | 911 | band); |
8ca151b5 JB |
912 | } |
913 | } | |
914 | ||
d310e405 ES |
915 | /** |
916 | * translate ucode response to mac80211 tx status control values | |
917 | */ | |
918 | static void iwl_mvm_hwrate_to_tx_status(u32 rate_n_flags, | |
919 | struct ieee80211_tx_info *info) | |
920 | { | |
921 | struct ieee80211_tx_rate *r = &info->status.rates[0]; | |
922 | ||
923 | info->status.antenna = | |
924 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
925 | iwl_mvm_hwrate_to_tx_rate(rate_n_flags, info->band, r); | |
926 | } | |
927 | ||
25657fec GBA |
928 | static void iwl_mvm_tx_status_check_trigger(struct iwl_mvm *mvm, |
929 | u32 status) | |
930 | { | |
931 | struct iwl_fw_dbg_trigger_tlv *trig; | |
932 | struct iwl_fw_dbg_trigger_tx_status *status_trig; | |
933 | int i; | |
934 | ||
935 | if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TX_STATUS)) | |
936 | return; | |
937 | ||
938 | trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TX_STATUS); | |
939 | status_trig = (void *)trig->data; | |
940 | ||
941 | if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig)) | |
942 | return; | |
943 | ||
944 | for (i = 0; i < ARRAY_SIZE(status_trig->statuses); i++) { | |
945 | /* don't collect on status 0 */ | |
946 | if (!status_trig->statuses[i].status) | |
947 | break; | |
948 | ||
949 | if (status_trig->statuses[i].status != (status & TX_STATUS_MSK)) | |
950 | continue; | |
951 | ||
952 | iwl_mvm_fw_dbg_collect_trig(mvm, trig, | |
953 | "Tx status %d was received", | |
954 | status & TX_STATUS_MSK); | |
955 | break; | |
956 | } | |
957 | } | |
958 | ||
8ca151b5 JB |
959 | static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, |
960 | struct iwl_rx_packet *pkt) | |
961 | { | |
962 | struct ieee80211_sta *sta; | |
963 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
964 | int txq_id = SEQ_TO_QUEUE(sequence); | |
965 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
966 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
967 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
968 | u32 status = le16_to_cpu(tx_resp->status.status); | |
969 | u16 ssn = iwl_mvm_get_scd_ssn(tx_resp); | |
970 | struct iwl_mvm_sta *mvmsta; | |
971 | struct sk_buff_head skbs; | |
972 | u8 skb_freed = 0; | |
973 | u16 next_reclaimed, seq_ctl; | |
532beba3 | 974 | bool is_ndp = false; |
8ca151b5 JB |
975 | |
976 | __skb_queue_head_init(&skbs); | |
977 | ||
978 | seq_ctl = le16_to_cpu(tx_resp->seq_ctl); | |
979 | ||
980 | /* we can free until ssn % q.n_bd not inclusive */ | |
981 | iwl_trans_reclaim(mvm->trans, txq_id, ssn, &skbs); | |
982 | ||
983 | while (!skb_queue_empty(&skbs)) { | |
984 | struct sk_buff *skb = __skb_dequeue(&skbs); | |
985 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
986 | ||
987 | skb_freed++; | |
988 | ||
989 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
990 | ||
991 | memset(&info->status, 0, sizeof(info->status)); | |
992 | ||
993 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
994 | ||
995 | /* inform mac80211 about what happened with the frame */ | |
996 | switch (status & TX_STATUS_MSK) { | |
997 | case TX_STATUS_SUCCESS: | |
998 | case TX_STATUS_DIRECT_DONE: | |
999 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1000 | break; | |
1001 | case TX_STATUS_FAIL_DEST_PS: | |
1002 | info->flags |= IEEE80211_TX_STAT_TX_FILTERED; | |
1003 | break; | |
1004 | default: | |
1005 | break; | |
1006 | } | |
1007 | ||
25657fec GBA |
1008 | iwl_mvm_tx_status_check_trigger(mvm, status); |
1009 | ||
8ca151b5 | 1010 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
d310e405 ES |
1011 | iwl_mvm_hwrate_to_tx_status(le32_to_cpu(tx_resp->initial_rate), |
1012 | info); | |
929e6ede ES |
1013 | info->status.status_driver_data[1] = |
1014 | (void *)(uintptr_t)le32_to_cpu(tx_resp->initial_rate); | |
8ca151b5 JB |
1015 | |
1016 | /* Single frame failure in an AMPDU queue => send BAR */ | |
19e737c9 | 1017 | if (txq_id >= mvm->first_agg_queue && |
9ce578a5 ES |
1018 | !(info->flags & IEEE80211_TX_STAT_ACK) && |
1019 | !(info->flags & IEEE80211_TX_STAT_TX_FILTERED)) | |
8ca151b5 | 1020 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; |
8ca151b5 | 1021 | |
ebea2f32 EG |
1022 | /* W/A FW bug: seq_ctl is wrong when the status isn't success */ |
1023 | if (status != TX_STATUS_SUCCESS) { | |
8ca151b5 JB |
1024 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1025 | seq_ctl = le16_to_cpu(hdr->seq_ctrl); | |
1026 | } | |
1027 | ||
532beba3 EG |
1028 | if (unlikely(!seq_ctl)) { |
1029 | struct ieee80211_hdr *hdr = (void *)skb->data; | |
1030 | ||
1031 | /* | |
1032 | * If it is an NDP, we can't update next_reclaim since | |
1033 | * its sequence control is 0. Note that for that same | |
1034 | * reason, NDPs are never sent to A-MPDU'able queues | |
1035 | * so that we can never have more than one freed frame | |
1036 | * for a single Tx resonse (see WARN_ON below). | |
1037 | */ | |
1038 | if (ieee80211_is_qos_nullfunc(hdr->frame_control)) | |
1039 | is_ndp = true; | |
1040 | } | |
1041 | ||
9b5452fd EG |
1042 | /* |
1043 | * TODO: this is not accurate if we are freeing more than one | |
1044 | * packet. | |
1045 | */ | |
1046 | info->status.tx_time = | |
1047 | le16_to_cpu(tx_resp->wireless_media_time); | |
3a84b69e EP |
1048 | BUILD_BUG_ON(ARRAY_SIZE(info->status.status_driver_data) < 1); |
1049 | info->status.status_driver_data[0] = | |
1050 | (void *)(uintptr_t)tx_resp->reduced_tpc; | |
1051 | ||
f14d6b39 | 1052 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 JB |
1053 | } |
1054 | ||
19e737c9 | 1055 | if (txq_id >= mvm->first_agg_queue) { |
8ca151b5 JB |
1056 | /* If this is an aggregation queue, we use the ssn since: |
1057 | * ssn = wifi seq_num % 256. | |
1058 | * The seq_ctl is the sequence control of the packet to which | |
1059 | * this Tx response relates. But if there is a hole in the | |
1060 | * bitmap of the BA we received, this Tx response may allow to | |
1061 | * reclaim the hole and all the subsequent packets that were | |
1062 | * already acked. In that case, seq_ctl != ssn, and the next | |
1063 | * packet to be reclaimed will be ssn and not seq_ctl. In that | |
1064 | * case, several packets will be reclaimed even if | |
1065 | * frame_count = 1. | |
1066 | * | |
1067 | * The ssn is the index (% 256) of the latest packet that has | |
1068 | * treated (acked / dropped) + 1. | |
1069 | */ | |
1070 | next_reclaimed = ssn; | |
1071 | } else { | |
1072 | /* The next packet to be reclaimed is the one after this one */ | |
9a886586 | 1073 | next_reclaimed = IEEE80211_SEQ_TO_SN(seq_ctl + 0x10); |
8ca151b5 JB |
1074 | } |
1075 | ||
1076 | IWL_DEBUG_TX_REPLY(mvm, | |
8c6e83d6 EG |
1077 | "TXQ %d status %s (0x%08x)\n", |
1078 | txq_id, iwl_mvm_get_tx_fail_reason(status), status); | |
1079 | ||
1080 | IWL_DEBUG_TX_REPLY(mvm, | |
1081 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d next_reclaimed=0x%x seq_ctl=0x%x\n", | |
1082 | le32_to_cpu(tx_resp->initial_rate), | |
8ca151b5 JB |
1083 | tx_resp->failure_frame, SEQ_TO_INDEX(sequence), |
1084 | ssn, next_reclaimed, seq_ctl); | |
1085 | ||
1086 | rcu_read_lock(); | |
1087 | ||
1088 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
9bb0c1ad EG |
1089 | /* |
1090 | * sta can't be NULL otherwise it'd mean that the sta has been freed in | |
1091 | * the firmware while we still have packets for it in the Tx queues. | |
1092 | */ | |
1093 | if (WARN_ON_ONCE(!sta)) | |
1094 | goto out; | |
8ca151b5 | 1095 | |
9bb0c1ad | 1096 | if (!IS_ERR(sta)) { |
5b577a90 | 1097 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1098 | |
1099 | if (tid != IWL_TID_NON_QOS) { | |
1100 | struct iwl_mvm_tid_data *tid_data = | |
1101 | &mvmsta->tid_data[tid]; | |
36be0eb6 | 1102 | bool send_eosp_ndp = false; |
8ca151b5 | 1103 | |
2bfb5092 | 1104 | spin_lock_bh(&mvmsta->lock); |
532beba3 EG |
1105 | if (!is_ndp) { |
1106 | tid_data->next_reclaimed = next_reclaimed; | |
1107 | IWL_DEBUG_TX_REPLY(mvm, | |
1108 | "Next reclaimed packet:%d\n", | |
1109 | next_reclaimed); | |
1110 | } else { | |
1111 | IWL_DEBUG_TX_REPLY(mvm, | |
1112 | "NDP - don't update next_reclaimed\n"); | |
1113 | } | |
1114 | ||
8ca151b5 | 1115 | iwl_mvm_check_ratid_empty(mvm, sta, tid); |
36be0eb6 EG |
1116 | |
1117 | if (mvmsta->sleep_tx_count) { | |
1118 | mvmsta->sleep_tx_count--; | |
1119 | if (mvmsta->sleep_tx_count && | |
1120 | !iwl_mvm_tid_queued(tid_data)) { | |
1121 | /* | |
1122 | * The number of frames in the queue | |
1123 | * dropped to 0 even if we sent less | |
1124 | * frames than we thought we had on the | |
1125 | * Tx queue. | |
1126 | * This means we had holes in the BA | |
1127 | * window that we just filled, ask | |
1128 | * mac80211 to send EOSP since the | |
1129 | * firmware won't know how to do that. | |
1130 | * Send NDP and the firmware will send | |
1131 | * EOSP notification that will trigger | |
1132 | * a call to ieee80211_sta_eosp(). | |
1133 | */ | |
1134 | send_eosp_ndp = true; | |
1135 | } | |
1136 | } | |
1137 | ||
2bfb5092 | 1138 | spin_unlock_bh(&mvmsta->lock); |
36be0eb6 EG |
1139 | if (send_eosp_ndp) { |
1140 | iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, | |
1141 | IEEE80211_FRAME_RELEASE_UAPSD, | |
1142 | 1, tid, false, false); | |
1143 | mvmsta->sleep_tx_count = 0; | |
1144 | ieee80211_send_eosp_nullfunc(sta, tid); | |
1145 | } | |
8ca151b5 | 1146 | } |
3e56eadf JB |
1147 | |
1148 | if (mvmsta->next_status_eosp) { | |
1149 | mvmsta->next_status_eosp = false; | |
1150 | ieee80211_sta_eosp(sta); | |
1151 | } | |
8ca151b5 | 1152 | } else { |
8ca151b5 JB |
1153 | mvmsta = NULL; |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * If the txq is not an AMPDU queue, there is no chance we freed | |
1158 | * several skbs. Check that out... | |
8ca151b5 | 1159 | */ |
9bb0c1ad EG |
1160 | if (txq_id >= mvm->first_agg_queue) |
1161 | goto out; | |
1162 | ||
1163 | /* We can't free more than one frame at once on a shared queue */ | |
1164 | WARN_ON(skb_freed > 1); | |
1165 | ||
589a6ba4 | 1166 | /* If we have still frames for this STA nothing to do here */ |
9bb0c1ad EG |
1167 | if (!atomic_sub_and_test(skb_freed, &mvm->pending_frames[sta_id])) |
1168 | goto out; | |
1169 | ||
1170 | if (mvmsta && mvmsta->vif->type == NL80211_IFTYPE_AP) { | |
003e5236 | 1171 | |
9bb0c1ad | 1172 | /* |
003e5236 AO |
1173 | * If there are no pending frames for this STA and |
1174 | * the tx to this station is not disabled, notify | |
1175 | * mac80211 that this station can now wake up in its | |
9bb0c1ad EG |
1176 | * STA table. |
1177 | * If mvmsta is not NULL, sta is valid. | |
1178 | */ | |
003e5236 AO |
1179 | |
1180 | spin_lock_bh(&mvmsta->lock); | |
1181 | ||
1182 | if (!mvmsta->disable_tx) | |
1183 | ieee80211_sta_block_awake(mvm->hw, sta, false); | |
1184 | ||
1185 | spin_unlock_bh(&mvmsta->lock); | |
9bb0c1ad EG |
1186 | } |
1187 | ||
1188 | if (PTR_ERR(sta) == -EBUSY || PTR_ERR(sta) == -ENOENT) { | |
1189 | /* | |
1190 | * We are draining and this was the last packet - pre_rcu_remove | |
1191 | * has been called already. We might be after the | |
1192 | * synchronize_net already. | |
1193 | * Don't rely on iwl_mvm_rm_sta to see the empty Tx queues. | |
1194 | */ | |
1195 | set_bit(sta_id, mvm->sta_drained); | |
1196 | schedule_work(&mvm->sta_drained_wk); | |
8ca151b5 JB |
1197 | } |
1198 | ||
9bb0c1ad | 1199 | out: |
8ca151b5 JB |
1200 | rcu_read_unlock(); |
1201 | } | |
1202 | ||
1203 | #ifdef CONFIG_IWLWIFI_DEBUG | |
1204 | #define AGG_TX_STATE_(x) case AGG_TX_STATE_ ## x: return #x | |
1205 | static const char *iwl_get_agg_tx_status(u16 status) | |
1206 | { | |
1207 | switch (status & AGG_TX_STATE_STATUS_MSK) { | |
1208 | AGG_TX_STATE_(TRANSMITTED); | |
1209 | AGG_TX_STATE_(UNDERRUN); | |
1210 | AGG_TX_STATE_(BT_PRIO); | |
1211 | AGG_TX_STATE_(FEW_BYTES); | |
1212 | AGG_TX_STATE_(ABORT); | |
1213 | AGG_TX_STATE_(LAST_SENT_TTL); | |
1214 | AGG_TX_STATE_(LAST_SENT_TRY_CNT); | |
1215 | AGG_TX_STATE_(LAST_SENT_BT_KILL); | |
1216 | AGG_TX_STATE_(SCD_QUERY); | |
1217 | AGG_TX_STATE_(TEST_BAD_CRC32); | |
1218 | AGG_TX_STATE_(RESPONSE); | |
1219 | AGG_TX_STATE_(DUMP_TX); | |
1220 | AGG_TX_STATE_(DELAY_TX); | |
1221 | } | |
1222 | ||
1223 | return "UNKNOWN"; | |
1224 | } | |
1225 | ||
1226 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1227 | struct iwl_rx_packet *pkt) | |
1228 | { | |
1229 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1230 | struct agg_tx_status *frame_status = &tx_resp->status; | |
1231 | int i; | |
1232 | ||
1233 | for (i = 0; i < tx_resp->frame_count; i++) { | |
1234 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
1235 | ||
1236 | IWL_DEBUG_TX_REPLY(mvm, | |
1237 | "status %s (0x%04x), try-count (%d) seq (0x%x)\n", | |
1238 | iwl_get_agg_tx_status(fstatus), | |
1239 | fstatus & AGG_TX_STATE_STATUS_MSK, | |
1240 | (fstatus & AGG_TX_STATE_TRY_CNT_MSK) >> | |
1241 | AGG_TX_STATE_TRY_CNT_POS, | |
1242 | le16_to_cpu(frame_status[i].sequence)); | |
1243 | } | |
1244 | } | |
1245 | #else | |
1246 | static void iwl_mvm_rx_tx_cmd_agg_dbg(struct iwl_mvm *mvm, | |
1247 | struct iwl_rx_packet *pkt) | |
1248 | {} | |
1249 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1250 | ||
1251 | static void iwl_mvm_rx_tx_cmd_agg(struct iwl_mvm *mvm, | |
1252 | struct iwl_rx_packet *pkt) | |
1253 | { | |
1254 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1255 | int sta_id = IWL_MVM_TX_RES_GET_RA(tx_resp->ra_tid); | |
1256 | int tid = IWL_MVM_TX_RES_GET_TID(tx_resp->ra_tid); | |
1257 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1258 | struct ieee80211_sta *sta; | |
1259 | ||
19e737c9 | 1260 | if (WARN_ON_ONCE(SEQ_TO_QUEUE(sequence) < mvm->first_agg_queue)) |
8ca151b5 JB |
1261 | return; |
1262 | ||
1263 | if (WARN_ON_ONCE(tid == IWL_TID_NON_QOS)) | |
1264 | return; | |
1265 | ||
1266 | iwl_mvm_rx_tx_cmd_agg_dbg(mvm, pkt); | |
1267 | ||
1268 | rcu_read_lock(); | |
1269 | ||
1270 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1271 | ||
1272 | if (!WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
5b577a90 | 1273 | struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1274 | mvmsta->tid_data[tid].rate_n_flags = |
1275 | le32_to_cpu(tx_resp->initial_rate); | |
9b5452fd EG |
1276 | mvmsta->tid_data[tid].tx_time = |
1277 | le16_to_cpu(tx_resp->wireless_media_time); | |
8ca151b5 JB |
1278 | } |
1279 | ||
1280 | rcu_read_unlock(); | |
1281 | } | |
1282 | ||
0416841d | 1283 | void iwl_mvm_rx_tx_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
1284 | { |
1285 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1286 | struct iwl_mvm_tx_resp *tx_resp = (void *)pkt->data; | |
1287 | ||
1288 | if (tx_resp->frame_count == 1) | |
1289 | iwl_mvm_rx_tx_cmd_single(mvm, pkt); | |
1290 | else | |
1291 | iwl_mvm_rx_tx_cmd_agg(mvm, pkt); | |
8ca151b5 JB |
1292 | } |
1293 | ||
a7130442 ES |
1294 | static void iwl_mvm_tx_info_from_ba_notif(struct ieee80211_tx_info *info, |
1295 | struct iwl_mvm_ba_notif *ba_notif, | |
1296 | struct iwl_mvm_tid_data *tid_data) | |
1297 | { | |
1298 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1299 | info->status.ampdu_ack_len = ba_notif->txed_2_done; | |
1300 | info->status.ampdu_len = ba_notif->txed; | |
1301 | iwl_mvm_hwrate_to_tx_status(tid_data->rate_n_flags, | |
1302 | info); | |
9b5452fd EG |
1303 | /* TODO: not accounted if the whole A-MPDU failed */ |
1304 | info->status.tx_time = tid_data->tx_time; | |
a7130442 | 1305 | info->status.status_driver_data[0] = |
69c7fda4 | 1306 | (void *)(uintptr_t)ba_notif->reduced_txp; |
929e6ede ES |
1307 | info->status.status_driver_data[1] = |
1308 | (void *)(uintptr_t)tid_data->rate_n_flags; | |
a7130442 ES |
1309 | } |
1310 | ||
0416841d | 1311 | void iwl_mvm_rx_ba_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
8ca151b5 JB |
1312 | { |
1313 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1314 | struct iwl_mvm_ba_notif *ba_notif = (void *)pkt->data; | |
1315 | struct sk_buff_head reclaimed_skbs; | |
1316 | struct iwl_mvm_tid_data *tid_data; | |
8ca151b5 JB |
1317 | struct ieee80211_sta *sta; |
1318 | struct iwl_mvm_sta *mvmsta; | |
8ca151b5 JB |
1319 | struct sk_buff *skb; |
1320 | int sta_id, tid, freed; | |
8ca151b5 JB |
1321 | /* "flow" corresponds to Tx queue */ |
1322 | u16 scd_flow = le16_to_cpu(ba_notif->scd_flow); | |
8ca151b5 JB |
1323 | /* "ssn" is start of block-ack Tx window, corresponds to index |
1324 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1325 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_notif->scd_ssn); | |
1326 | ||
1327 | sta_id = ba_notif->sta_id; | |
1328 | tid = ba_notif->tid; | |
1329 | ||
2cee4762 ES |
1330 | if (WARN_ONCE(sta_id >= IWL_MVM_STATION_COUNT || |
1331 | tid >= IWL_MAX_TID_COUNT, | |
1332 | "sta_id %d tid %d", sta_id, tid)) | |
0416841d | 1333 | return; |
2cee4762 | 1334 | |
8ca151b5 JB |
1335 | rcu_read_lock(); |
1336 | ||
1337 | sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]); | |
1338 | ||
1339 | /* Reclaiming frames for a station that has been deleted ? */ | |
1340 | if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) { | |
1341 | rcu_read_unlock(); | |
0416841d | 1342 | return; |
8ca151b5 JB |
1343 | } |
1344 | ||
5b577a90 | 1345 | mvmsta = iwl_mvm_sta_from_mac80211(sta); |
8ca151b5 JB |
1346 | tid_data = &mvmsta->tid_data[tid]; |
1347 | ||
1f16ea29 JB |
1348 | if (tid_data->txq_id != scd_flow) { |
1349 | IWL_ERR(mvm, | |
1350 | "invalid BA notification: Q %d, tid %d, flow %d\n", | |
1351 | tid_data->txq_id, tid, scd_flow); | |
8ca151b5 | 1352 | rcu_read_unlock(); |
0416841d | 1353 | return; |
8ca151b5 JB |
1354 | } |
1355 | ||
2bfb5092 | 1356 | spin_lock_bh(&mvmsta->lock); |
8ca151b5 JB |
1357 | |
1358 | __skb_queue_head_init(&reclaimed_skbs); | |
1359 | ||
1360 | /* | |
1361 | * Release all TFDs before the SSN, i.e. all TFDs in front of | |
1362 | * block-ack window (we assume that they've been successfully | |
1363 | * transmitted ... if not, it's too late anyway). | |
1364 | */ | |
1365 | iwl_trans_reclaim(mvm->trans, scd_flow, ba_resp_scd_ssn, | |
1366 | &reclaimed_skbs); | |
1367 | ||
1368 | IWL_DEBUG_TX_REPLY(mvm, | |
1369 | "BA_NOTIFICATION Received from %pM, sta_id = %d\n", | |
1370 | (u8 *)&ba_notif->sta_addr_lo32, | |
1371 | ba_notif->sta_id); | |
1372 | IWL_DEBUG_TX_REPLY(mvm, | |
1373 | "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", | |
1374 | ba_notif->tid, le16_to_cpu(ba_notif->seq_ctl), | |
1375 | (unsigned long long)le64_to_cpu(ba_notif->bitmap), | |
1376 | scd_flow, ba_resp_scd_ssn, ba_notif->txed, | |
1377 | ba_notif->txed_2_done); | |
1378 | ||
69c7fda4 GG |
1379 | IWL_DEBUG_TX_REPLY(mvm, "reduced txp from ba notif %d\n", |
1380 | ba_notif->reduced_txp); | |
8ca151b5 JB |
1381 | tid_data->next_reclaimed = ba_resp_scd_ssn; |
1382 | ||
1383 | iwl_mvm_check_ratid_empty(mvm, sta, tid); | |
1384 | ||
1385 | freed = 0; | |
1386 | ||
1387 | skb_queue_walk(&reclaimed_skbs, skb) { | |
143582c6 JB |
1388 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1389 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
8ca151b5 JB |
1390 | |
1391 | if (ieee80211_is_data_qos(hdr->frame_control)) | |
1392 | freed++; | |
1393 | else | |
1394 | WARN_ON_ONCE(1); | |
1395 | ||
8ca151b5 JB |
1396 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); |
1397 | ||
143582c6 JB |
1398 | memset(&info->status, 0, sizeof(info->status)); |
1399 | /* Packet was transmitted successfully, failures come as single | |
1400 | * frames because before failing a frame the firmware transmits | |
1401 | * it without aggregation at least once. | |
1402 | */ | |
1403 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1404 | ||
a7130442 ES |
1405 | /* this is the first skb we deliver in this batch */ |
1406 | /* put the rate scaling data there */ | |
1407 | if (freed == 1) | |
1408 | iwl_mvm_tx_info_from_ba_notif(info, ba_notif, tid_data); | |
8ca151b5 JB |
1409 | } |
1410 | ||
2bfb5092 | 1411 | spin_unlock_bh(&mvmsta->lock); |
8ca151b5 | 1412 | |
a7130442 ES |
1413 | /* We got a BA notif with 0 acked or scd_ssn didn't progress which is |
1414 | * possible (i.e. first MPDU in the aggregation wasn't acked) | |
1415 | * Still it's important to update RS about sent vs. acked. | |
1416 | */ | |
1417 | if (skb_queue_empty(&reclaimed_skbs)) { | |
1418 | struct ieee80211_tx_info ba_info = {}; | |
1419 | struct ieee80211_chanctx_conf *chanctx_conf = NULL; | |
1420 | ||
1421 | if (mvmsta->vif) | |
1422 | chanctx_conf = | |
1423 | rcu_dereference(mvmsta->vif->chanctx_conf); | |
1424 | ||
1425 | if (WARN_ON_ONCE(!chanctx_conf)) | |
1426 | goto out; | |
1427 | ||
1428 | ba_info.band = chanctx_conf->def.chan->band; | |
1429 | iwl_mvm_tx_info_from_ba_notif(&ba_info, ba_notif, tid_data); | |
1430 | ||
1431 | IWL_DEBUG_TX_REPLY(mvm, "No reclaim. Update rs directly\n"); | |
1432 | iwl_mvm_rs_tx_status(mvm, sta, tid, &ba_info); | |
1433 | } | |
1434 | ||
1435 | out: | |
8ca151b5 JB |
1436 | rcu_read_unlock(); |
1437 | ||
1438 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1439 | skb = __skb_dequeue(&reclaimed_skbs); | |
f14d6b39 | 1440 | ieee80211_tx_status(mvm->hw, skb); |
8ca151b5 | 1441 | } |
8ca151b5 JB |
1442 | } |
1443 | ||
fe92e32a EG |
1444 | /* |
1445 | * Note that there are transports that buffer frames before they reach | |
1446 | * the firmware. This means that after flush_tx_path is called, the | |
1447 | * queue might not be empty. The race-free way to handle this is to: | |
1448 | * 1) set the station as draining | |
1449 | * 2) flush the Tx path | |
1450 | * 3) wait for the transport queues to be empty | |
1451 | */ | |
5888a40c | 1452 | int iwl_mvm_flush_tx_path(struct iwl_mvm *mvm, u32 tfd_msk, u32 flags) |
8ca151b5 JB |
1453 | { |
1454 | int ret; | |
1455 | struct iwl_tx_path_flush_cmd flush_cmd = { | |
1456 | .queues_ctl = cpu_to_le32(tfd_msk), | |
1457 | .flush_ctl = cpu_to_le16(DUMP_TX_FIFO_FLUSH), | |
1458 | }; | |
1459 | ||
8ca151b5 JB |
1460 | ret = iwl_mvm_send_cmd_pdu(mvm, TXPATH_FLUSH, flags, |
1461 | sizeof(flush_cmd), &flush_cmd); | |
1462 | if (ret) | |
1463 | IWL_ERR(mvm, "Failed to send flush command (%d)\n", ret); | |
1464 | return ret; | |
1465 | } |