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b305a080 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
901069c7 | 5 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
b305a080 WYG |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/sched.h> | |
a0eaad71 | 34 | #include <linux/ieee80211.h> |
b305a080 WYG |
35 | |
36 | #include "iwl-dev.h" | |
37 | #include "iwl-core.h" | |
b305a080 | 38 | #include "iwl-io.h" |
19e6cda0 | 39 | #include "iwl-agn-hw.h" |
8d801080 | 40 | #include "iwl-agn.h" |
47c1b496 | 41 | #include "iwl-trans.h" |
b305a080 | 42 | |
5c3d29fc DF |
43 | static void iwlagn_tx_cmd_protection(struct iwl_priv *priv, |
44 | struct ieee80211_tx_info *info, | |
45 | __le16 fc, __le32 *tx_flags) | |
46 | { | |
47 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS || | |
48 | info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT || | |
49 | info->flags & IEEE80211_TX_CTL_AMPDU) | |
50 | *tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK; | |
51 | } | |
52 | ||
74bcdb33 WYG |
53 | /* |
54 | * handle build REPLY_TX command notification. | |
55 | */ | |
56 | static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv, | |
c6baf7fb JB |
57 | struct sk_buff *skb, |
58 | struct iwl_tx_cmd *tx_cmd, | |
59 | struct ieee80211_tx_info *info, | |
60 | struct ieee80211_hdr *hdr, u8 sta_id) | |
74bcdb33 WYG |
61 | { |
62 | __le16 fc = hdr->frame_control; | |
63 | __le32 tx_flags = tx_cmd->tx_flags; | |
64 | ||
65 | tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2c2def10 JB |
66 | |
67 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
74bcdb33 | 68 | tx_flags |= TX_CMD_FLG_ACK_MSK; |
2c2def10 JB |
69 | else |
70 | tx_flags &= ~TX_CMD_FLG_ACK_MSK; | |
74bcdb33 | 71 | |
2c2def10 JB |
72 | if (ieee80211_is_probe_resp(fc)) |
73 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
74 | else if (ieee80211_is_back_req(fc)) | |
74bcdb33 | 75 | tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; |
d44ae69e | 76 | else if (info->band == IEEE80211_BAND_2GHZ && |
38622419 DF |
77 | cfg(priv)->bt_params && |
78 | cfg(priv)->bt_params->advanced_bt_coexist && | |
d44ae69e JB |
79 | (ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) || |
80 | ieee80211_is_reassoc_req(fc) || | |
81 | skb->protocol == cpu_to_be16(ETH_P_PAE))) | |
82 | tx_flags |= TX_CMD_FLG_IGNORE_BT; | |
74bcdb33 WYG |
83 | |
84 | ||
c6baf7fb | 85 | tx_cmd->sta_id = sta_id; |
74bcdb33 WYG |
86 | if (ieee80211_has_morefrags(fc)) |
87 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
88 | ||
89 | if (ieee80211_is_data_qos(fc)) { | |
90 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
91 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
92 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
93 | } else { | |
123877b8 WYG |
94 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
95 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
96 | else | |
97 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
74bcdb33 WYG |
98 | } |
99 | ||
5c3d29fc | 100 | iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags); |
74bcdb33 WYG |
101 | |
102 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
103 | if (ieee80211_is_mgmt(fc)) { | |
104 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
105 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); | |
106 | else | |
107 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); | |
108 | } else { | |
109 | tx_cmd->timeout.pm_frame_timeout = 0; | |
110 | } | |
111 | ||
112 | tx_cmd->driver_txop = 0; | |
113 | tx_cmd->tx_flags = tx_flags; | |
114 | tx_cmd->next_frame_len = 0; | |
115 | } | |
116 | ||
74bcdb33 | 117 | static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv, |
c6baf7fb JB |
118 | struct iwl_tx_cmd *tx_cmd, |
119 | struct ieee80211_tx_info *info, | |
120 | __le16 fc) | |
74bcdb33 WYG |
121 | { |
122 | u32 rate_flags; | |
123 | int rate_idx; | |
124 | u8 rts_retry_limit; | |
125 | u8 data_retry_limit; | |
126 | u8 rate_plcp; | |
127 | ||
f3129b73 WYG |
128 | if (priv->shrd->wowlan) { |
129 | rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT; | |
130 | data_retry_limit = IWLAGN_LOW_RETRY_LIMIT; | |
131 | } else { | |
132 | /* Set retry limit on RTS packets */ | |
133 | rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT; | |
134 | ||
135 | /* Set retry limit on DATA packets and Probe Responses*/ | |
136 | if (ieee80211_is_probe_resp(fc)) { | |
137 | data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT; | |
138 | rts_retry_limit = | |
139 | min(data_retry_limit, rts_retry_limit); | |
140 | } else if (ieee80211_is_back_req(fc)) | |
141 | data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT; | |
142 | else | |
143 | data_retry_limit = IWLAGN_DEFAULT_TX_RETRY; | |
144 | } | |
74bcdb33 | 145 | |
78558cb4 | 146 | tx_cmd->data_retry_limit = data_retry_limit; |
74bcdb33 WYG |
147 | tx_cmd->rts_retry_limit = rts_retry_limit; |
148 | ||
149 | /* DATA packets will use the uCode station table for rate/antenna | |
150 | * selection */ | |
151 | if (ieee80211_is_data(fc)) { | |
152 | tx_cmd->initial_rate_index = 0; | |
153 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
5ef15ccc | 154 | #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE |
4e308119 WYG |
155 | if (priv->tm_fixed_rate) { |
156 | /* | |
157 | * rate overwrite by testmode | |
158 | * we not only send lq command to change rate | |
159 | * we also re-enforce per data pkt base. | |
160 | */ | |
161 | tx_cmd->tx_flags &= ~TX_CMD_FLG_STA_RATE_MSK; | |
162 | memcpy(&tx_cmd->rate_n_flags, &priv->tm_fixed_rate, | |
163 | sizeof(tx_cmd->rate_n_flags)); | |
164 | } | |
c10e2c10 | 165 | #endif |
74bcdb33 | 166 | return; |
b8deb492 WYG |
167 | } else if (ieee80211_is_back_req(fc)) |
168 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
74bcdb33 WYG |
169 | |
170 | /** | |
171 | * If the current TX rate stored in mac80211 has the MCS bit set, it's | |
172 | * not really a TX rate. Thus, we use the lowest supported rate for | |
173 | * this band. Also use the lowest supported rate if the stored rate | |
174 | * index is invalid. | |
175 | */ | |
176 | rate_idx = info->control.rates[0].idx; | |
177 | if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || | |
178 | (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) | |
179 | rate_idx = rate_lowest_index(&priv->bands[info->band], | |
180 | info->control.sta); | |
181 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ | |
182 | if (info->band == IEEE80211_BAND_5GHZ) | |
183 | rate_idx += IWL_FIRST_OFDM_RATE; | |
184 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
185 | rate_plcp = iwl_rates[rate_idx].plcp; | |
186 | /* Zero out flags for this packet */ | |
187 | rate_flags = 0; | |
188 | ||
189 | /* Set CCK flag as needed */ | |
190 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
191 | rate_flags |= RATE_MCS_CCK_MSK; | |
192 | ||
74bcdb33 | 193 | /* Set up antennas */ |
38622419 DF |
194 | if (cfg(priv)->bt_params && |
195 | cfg(priv)->bt_params->advanced_bt_coexist && | |
7cb1b088 | 196 | priv->bt_full_concurrent) { |
bee008b7 WYG |
197 | /* operated as 1x1 in full concurrency mode */ |
198 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
d6189124 | 199 | first_antenna(hw_params(priv).valid_tx_ant)); |
bee008b7 WYG |
200 | } else |
201 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
d6189124 | 202 | hw_params(priv).valid_tx_ant); |
74bcdb33 WYG |
203 | rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant); |
204 | ||
205 | /* Set the rate in the TX cmd */ | |
206 | tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags); | |
207 | } | |
208 | ||
209 | static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv *priv, | |
210 | struct ieee80211_tx_info *info, | |
211 | struct iwl_tx_cmd *tx_cmd, | |
212 | struct sk_buff *skb_frag, | |
213 | int sta_id) | |
214 | { | |
215 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
216 | ||
97359d12 JB |
217 | switch (keyconf->cipher) { |
218 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
219 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
220 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
221 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
222 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
223 | IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n"); | |
224 | break; | |
225 | ||
97359d12 | 226 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 227 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 228 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
229 | IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n"); |
230 | break; | |
231 | ||
97359d12 JB |
232 | case WLAN_CIPHER_SUITE_WEP104: |
233 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
234 | /* fall through */ | |
235 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
236 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
237 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
238 | ||
74bcdb33 WYG |
239 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
240 | ||
241 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
242 | "with key %d\n", keyconf->keyidx); | |
243 | break; | |
244 | ||
245 | default: | |
97359d12 | 246 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
247 | break; |
248 | } | |
249 | } | |
250 | ||
251 | /* | |
252 | * start REPLY_TX command process | |
253 | */ | |
254 | int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) | |
255 | { | |
256 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
257 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 258 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 259 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
dfa2bdba | 260 | struct iwl_device_cmd *dev_cmd = NULL; |
47c1b496 | 261 | struct iwl_tx_cmd *tx_cmd; |
47c1b496 | 262 | |
74bcdb33 WYG |
263 | __le16 fc; |
264 | u8 hdr_len; | |
47c1b496 | 265 | u16 len; |
74bcdb33 | 266 | u8 sta_id; |
74bcdb33 | 267 | unsigned long flags; |
2e34034e | 268 | bool is_agg = false; |
74bcdb33 | 269 | |
c6baf7fb | 270 | if (info->control.vif) |
a194e324 JB |
271 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
272 | ||
10b15e6f | 273 | spin_lock_irqsave(&priv->shrd->lock, flags); |
845a9c0d | 274 | if (iwl_is_rfkill(priv->shrd)) { |
74bcdb33 | 275 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 276 | goto drop_unlock_priv; |
74bcdb33 WYG |
277 | } |
278 | ||
279 | fc = hdr->frame_control; | |
280 | ||
281 | #ifdef CONFIG_IWLWIFI_DEBUG | |
282 | if (ieee80211_is_auth(fc)) | |
283 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
284 | else if (ieee80211_is_assoc_req(fc)) | |
285 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
286 | else if (ieee80211_is_reassoc_req(fc)) | |
287 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
288 | #endif | |
289 | ||
79d3eef8 JB |
290 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
291 | struct iwl_wipan_noa_data *noa_data = | |
292 | rcu_dereference(priv->noa_data); | |
293 | ||
294 | if (noa_data && | |
295 | pskb_expand_head(skb, 0, noa_data->length, | |
296 | GFP_ATOMIC) == 0) { | |
297 | memcpy(skb_put(skb, noa_data->length), | |
298 | noa_data->data, noa_data->length); | |
299 | hdr = (struct ieee80211_hdr *)skb->data; | |
300 | } | |
301 | } | |
302 | ||
74bcdb33 WYG |
303 | hdr_len = ieee80211_hdrlen(fc); |
304 | ||
bfd36103 SG |
305 | /* For management frames use broadcast id to do not break aggregation */ |
306 | if (!ieee80211_is_data(fc)) | |
307 | sta_id = ctx->bcast_sta_id; | |
308 | else { | |
309 | /* Find index into station table for destination station */ | |
310 | sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta); | |
311 | if (sta_id == IWL_INVALID_STATION) { | |
312 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
313 | hdr->addr1); | |
e00cf3b9 | 314 | goto drop_unlock_priv; |
bfd36103 | 315 | } |
74bcdb33 WYG |
316 | } |
317 | ||
318 | IWL_DEBUG_TX(priv, "station Id %d\n", sta_id); | |
319 | ||
47c1b496 EG |
320 | if (info->control.sta) |
321 | sta_priv = (void *)info->control.sta->drv_priv; | |
74bcdb33 | 322 | |
67158b67 | 323 | if (sta_priv && sta_priv->asleep && |
47086fc5 | 324 | (info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) { |
74bcdb33 WYG |
325 | /* |
326 | * This sends an asynchronous command to the device, | |
327 | * but we can rely on it being processed before the | |
328 | * next frame is processed -- and the next frame to | |
329 | * this station is the one that will consume this | |
330 | * counter. | |
331 | * For now set the counter to just 1 since we do not | |
332 | * support uAPSD yet. | |
333 | */ | |
334 | iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); | |
335 | } | |
336 | ||
08ecf104 EG |
337 | if (info->flags & IEEE80211_TX_CTL_AMPDU) |
338 | is_agg = true; | |
339 | ||
10b15e6f | 340 | /* irqs already disabled/saved above when locking priv->shrd->lock */ |
f39c95e8 | 341 | spin_lock(&priv->shrd->sta_lock); |
9c5ac091 | 342 | |
dfa2bdba EG |
343 | dev_cmd = kmem_cache_alloc(priv->tx_cmd_pool, GFP_ATOMIC); |
344 | ||
345 | if (unlikely(!dev_cmd)) | |
2c46f72e | 346 | goto drop_unlock_sta; |
74bcdb33 | 347 | |
dfa2bdba | 348 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
132f98c2 | 349 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 350 | |
74bcdb33 WYG |
351 | /* Total # bytes to be transmitted */ |
352 | len = (u16)skb->len; | |
353 | tx_cmd->len = cpu_to_le16(len); | |
354 | ||
355 | if (info->control.hw_key) | |
356 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id); | |
357 | ||
358 | /* TODO need this for burst mode later on */ | |
d44ae69e | 359 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 WYG |
360 | iwl_dbg_log_tx_data_frame(priv, len, hdr); |
361 | ||
362 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, fc); | |
363 | ||
364 | iwl_update_stats(priv, true, fc, len); | |
74bcdb33 | 365 | |
1a849613 EG |
366 | memset(&info->status, 0, sizeof(info->status)); |
367 | ||
2c452297 | 368 | info->driver_data[0] = ctx; |
dfa2bdba | 369 | info->driver_data[1] = dev_cmd; |
2c452297 | 370 | |
e13c0c59 | 371 | if (iwl_trans_tx(trans(priv), skb, dev_cmd, ctx->ctxid, sta_id)) |
47c1b496 | 372 | goto drop_unlock_sta; |
2c46f72e | 373 | |
f39c95e8 | 374 | spin_unlock(&priv->shrd->sta_lock); |
10b15e6f | 375 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
74bcdb33 | 376 | |
2e34034e JB |
377 | /* |
378 | * Avoid atomic ops if it isn't an associated client. | |
379 | * Also, if this is a packet for aggregation, don't | |
380 | * increase the counter because the ucode will stop | |
381 | * aggregation queues when their respective station | |
382 | * goes to sleep. | |
383 | */ | |
384 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
385 | atomic_inc(&sta_priv->pending_frames); |
386 | ||
74bcdb33 WYG |
387 | return 0; |
388 | ||
2c46f72e | 389 | drop_unlock_sta: |
dfa2bdba EG |
390 | if (dev_cmd) |
391 | kmem_cache_free(priv->tx_cmd_pool, dev_cmd); | |
f39c95e8 | 392 | spin_unlock(&priv->shrd->sta_lock); |
2c46f72e | 393 | drop_unlock_priv: |
10b15e6f | 394 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
74bcdb33 WYG |
395 | return -1; |
396 | } | |
397 | ||
bc237730 EG |
398 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
399 | struct ieee80211_sta *sta, u16 tid) | |
400 | { | |
401 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
402 | struct iwl_tid_data *tid_data; | |
403 | unsigned long flags; | |
404 | int sta_id; | |
405 | ||
406 | sta_id = iwl_sta_id(sta); | |
407 | ||
408 | if (sta_id == IWL_INVALID_STATION) { | |
409 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
410 | return -ENXIO; | |
411 | } | |
412 | ||
413 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
414 | ||
415 | tid_data = &priv->shrd->tid_data[sta_id][tid]; | |
416 | ||
417 | switch (priv->shrd->tid_data[sta_id][tid].agg.state) { | |
418 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
419 | /* | |
420 | * This can happen if the peer stops aggregation | |
421 | * again before we've had a chance to drain the | |
422 | * queue we selected previously, i.e. before the | |
423 | * session was really started completely. | |
424 | */ | |
425 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
426 | goto turn_off; | |
427 | case IWL_AGG_ON: | |
428 | break; | |
429 | default: | |
430 | IWL_WARN(priv, "Stopping AGG while state not ON " | |
431 | "or starting for %d on %d (%d)\n", sta_id, tid, | |
432 | priv->shrd->tid_data[sta_id][tid].agg.state); | |
433 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
434 | return 0; | |
435 | } | |
436 | ||
437 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); | |
438 | ||
439 | /* There are still packets for this RA / TID in the HW */ | |
440 | if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
441 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
442 | "next_recl = %d", | |
443 | tid_data->agg.ssn, | |
444 | tid_data->next_reclaimed); | |
445 | priv->shrd->tid_data[sta_id][tid].agg.state = | |
446 | IWL_EMPTYING_HW_QUEUE_DELBA; | |
447 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d", | |
452 | tid_data->agg.ssn); | |
453 | turn_off: | |
454 | priv->shrd->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF; | |
455 | ||
456 | /* do not restore/save irqs */ | |
457 | spin_unlock(&priv->shrd->sta_lock); | |
458 | spin_lock(&priv->shrd->lock); | |
459 | ||
460 | iwl_trans_tx_agg_disable(trans(priv), sta_id, tid); | |
461 | ||
462 | spin_unlock_irqrestore(&priv->shrd->lock, flags); | |
463 | ||
464 | iwl_stop_tx_ba_trans_ready(priv, vif_priv->ctx->ctxid, sta_id, tid); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
832f47e3 | 469 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 470 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 471 | { |
288712a6 | 472 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
74bcdb33 | 473 | int sta_id; |
74bcdb33 | 474 | int ret; |
74bcdb33 | 475 | |
5bc9890f WYG |
476 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
477 | sta->addr, tid); | |
74bcdb33 | 478 | |
619753ff | 479 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
480 | if (sta_id == IWL_INVALID_STATION) { |
481 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
482 | return -ENXIO; | |
483 | } | |
5f85a789 | 484 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
485 | return -EINVAL; |
486 | ||
5f85a789 | 487 | if (priv->shrd->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
488 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
489 | return -ENXIO; | |
490 | } | |
491 | ||
288712a6 | 492 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
493 | if (ret) |
494 | return ret; | |
495 | ||
288712a6 EG |
496 | ret = iwl_trans_tx_agg_alloc(trans(priv), vif_priv->ctx->ctxid, sta_id, |
497 | tid, ssn); | |
498 | ||
74bcdb33 WYG |
499 | return ret; |
500 | } | |
501 | ||
2e34034e JB |
502 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
503 | struct iwl_rxon_context *ctx, | |
504 | const u8 *addr1) | |
74bcdb33 | 505 | { |
74bcdb33 WYG |
506 | struct ieee80211_sta *sta; |
507 | struct iwl_station_priv *sta_priv; | |
508 | ||
6db6340c | 509 | rcu_read_lock(); |
2e34034e | 510 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
511 | if (sta) { |
512 | sta_priv = (void *)sta->drv_priv; | |
513 | /* avoid atomic ops if this isn't a client */ | |
514 | if (sta_priv->client && | |
515 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
516 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
517 | } | |
6db6340c | 518 | rcu_read_unlock(); |
2e34034e JB |
519 | } |
520 | ||
a0eaad71 EG |
521 | /** |
522 | * translate ucode response to mac80211 tx status control values | |
523 | */ | |
04e1cabe | 524 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 525 | struct ieee80211_tx_info *info) |
2e34034e | 526 | { |
a0eaad71 | 527 | struct ieee80211_tx_rate *r = &info->control.rates[0]; |
74bcdb33 | 528 | |
a0eaad71 EG |
529 | info->antenna_sel_tx = |
530 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
531 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
532 | r->flags |= IEEE80211_TX_RC_MCS; | |
533 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
534 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
535 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
536 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
537 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
538 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
539 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
540 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
541 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
542 | } |
543 | ||
a0eaad71 EG |
544 | #ifdef CONFIG_IWLWIFI_DEBUG |
545 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 546 | { |
a0eaad71 EG |
547 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
548 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 549 | |
a0eaad71 EG |
550 | switch (status & TX_STATUS_MSK) { |
551 | case TX_STATUS_SUCCESS: | |
552 | return "SUCCESS"; | |
553 | TX_STATUS_POSTPONE(DELAY); | |
554 | TX_STATUS_POSTPONE(FEW_BYTES); | |
555 | TX_STATUS_POSTPONE(BT_PRIO); | |
556 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
557 | TX_STATUS_POSTPONE(CALC_TTAK); | |
558 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
559 | TX_STATUS_FAIL(SHORT_LIMIT); | |
560 | TX_STATUS_FAIL(LONG_LIMIT); | |
561 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
562 | TX_STATUS_FAIL(DRAIN_FLOW); | |
563 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
564 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
565 | TX_STATUS_FAIL(DEST_PS); | |
566 | TX_STATUS_FAIL(HOST_ABORTED); | |
567 | TX_STATUS_FAIL(BT_RETRY); | |
568 | TX_STATUS_FAIL(STA_INVALID); | |
569 | TX_STATUS_FAIL(FRAG_DROPPED); | |
570 | TX_STATUS_FAIL(TID_DISABLE); | |
571 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
572 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
573 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
574 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
575 | } |
576 | ||
a0eaad71 | 577 | return "UNKNOWN"; |
74bcdb33 | 578 | |
a0eaad71 EG |
579 | #undef TX_STATUS_FAIL |
580 | #undef TX_STATUS_POSTPONE | |
581 | } | |
582 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 583 | |
04e1cabe EG |
584 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
585 | { | |
586 | status &= AGG_TX_STATUS_MSK; | |
587 | ||
588 | switch (status) { | |
589 | case AGG_TX_STATE_UNDERRUN_MSK: | |
590 | priv->reply_agg_tx_stats.underrun++; | |
591 | break; | |
592 | case AGG_TX_STATE_BT_PRIO_MSK: | |
593 | priv->reply_agg_tx_stats.bt_prio++; | |
594 | break; | |
595 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
596 | priv->reply_agg_tx_stats.few_bytes++; | |
597 | break; | |
598 | case AGG_TX_STATE_ABORT_MSK: | |
599 | priv->reply_agg_tx_stats.abort++; | |
600 | break; | |
601 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
602 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
603 | break; | |
604 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
605 | priv->reply_agg_tx_stats.last_sent_try++; | |
606 | break; | |
607 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
608 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
609 | break; | |
610 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
611 | priv->reply_agg_tx_stats.scd_query++; | |
612 | break; | |
613 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
614 | priv->reply_agg_tx_stats.bad_crc32++; | |
615 | break; | |
616 | case AGG_TX_STATE_RESPONSE_MSK: | |
617 | priv->reply_agg_tx_stats.response++; | |
618 | break; | |
619 | case AGG_TX_STATE_DUMP_TX_MSK: | |
620 | priv->reply_agg_tx_stats.dump_tx++; | |
621 | break; | |
622 | case AGG_TX_STATE_DELAY_TX_MSK: | |
623 | priv->reply_agg_tx_stats.delay_tx++; | |
624 | break; | |
625 | default: | |
626 | priv->reply_agg_tx_stats.unknown++; | |
627 | break; | |
628 | } | |
629 | } | |
630 | ||
a0eaad71 EG |
631 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
632 | struct iwlagn_tx_resp *tx_resp) | |
633 | { | |
634 | struct agg_tx_status *frame_status = &tx_resp->status; | |
635 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
636 | IWLAGN_TX_RES_TID_POS; | |
637 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
638 | IWLAGN_TX_RES_RA_POS; | |
5f85a789 | 639 | struct iwl_ht_agg *agg = &priv->shrd->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
640 | u32 status = le16_to_cpu(tx_resp->status.status); |
641 | int i; | |
642 | ||
643 | if (agg->wait_for_ba) | |
644 | IWL_DEBUG_TX_REPLY(priv, | |
645 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 646 | |
a0eaad71 EG |
647 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
648 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
649 | ||
650 | /* | |
651 | * If the BT kill count is non-zero, we'll get this | |
652 | * notification again. | |
653 | */ | |
654 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
38622419 DF |
655 | cfg(priv)->bt_params && |
656 | cfg(priv)->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
657 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
658 | } | |
b2502698 | 659 | |
1a849613 EG |
660 | if (tx_resp->frame_count == 1) |
661 | return; | |
662 | ||
a0eaad71 EG |
663 | /* Construct bit-map of pending frames within Tx window */ |
664 | for (i = 0; i < tx_resp->frame_count; i++) { | |
665 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
74bcdb33 | 666 | |
a0eaad71 EG |
667 | if (status & AGG_TX_STATUS_MSK) |
668 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 669 | |
a0eaad71 EG |
670 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
671 | AGG_TX_STATE_ABORT_MSK)) | |
672 | continue; | |
673 | ||
674 | IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), " | |
675 | "try-count (0x%08x)\n", | |
676 | iwl_get_agg_tx_fail_reason(fstatus), | |
677 | fstatus & AGG_TX_STATUS_MSK, | |
678 | fstatus & AGG_TX_TRY_MSK); | |
74bcdb33 | 679 | } |
74bcdb33 WYG |
680 | } |
681 | ||
04e1cabe EG |
682 | #ifdef CONFIG_IWLWIFI_DEBUG |
683 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
684 | ||
685 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
686 | { | |
687 | status &= AGG_TX_STATUS_MSK; | |
688 | switch (status) { | |
689 | case AGG_TX_STATE_TRANSMITTED: | |
690 | return "SUCCESS"; | |
691 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
692 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
693 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
694 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
695 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
696 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
697 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
698 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
699 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
700 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
701 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
702 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
703 | } | |
704 | ||
705 | return "UNKNOWN"; | |
706 | } | |
707 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
708 | ||
a0eaad71 EG |
709 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
710 | { | |
711 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
712 | tx_resp->frame_count) & MAX_SN; | |
713 | } | |
74bcdb33 | 714 | |
04e1cabe EG |
715 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
716 | { | |
717 | status &= TX_STATUS_MSK; | |
718 | ||
719 | switch (status) { | |
720 | case TX_STATUS_POSTPONE_DELAY: | |
721 | priv->reply_tx_stats.pp_delay++; | |
722 | break; | |
723 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
724 | priv->reply_tx_stats.pp_few_bytes++; | |
725 | break; | |
726 | case TX_STATUS_POSTPONE_BT_PRIO: | |
727 | priv->reply_tx_stats.pp_bt_prio++; | |
728 | break; | |
729 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
730 | priv->reply_tx_stats.pp_quiet_period++; | |
731 | break; | |
732 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
733 | priv->reply_tx_stats.pp_calc_ttak++; | |
734 | break; | |
735 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
736 | priv->reply_tx_stats.int_crossed_retry++; | |
737 | break; | |
738 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
739 | priv->reply_tx_stats.short_limit++; | |
740 | break; | |
741 | case TX_STATUS_FAIL_LONG_LIMIT: | |
742 | priv->reply_tx_stats.long_limit++; | |
743 | break; | |
744 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
745 | priv->reply_tx_stats.fifo_underrun++; | |
746 | break; | |
747 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
748 | priv->reply_tx_stats.drain_flow++; | |
749 | break; | |
750 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
751 | priv->reply_tx_stats.rfkill_flush++; | |
752 | break; | |
753 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
754 | priv->reply_tx_stats.life_expire++; | |
755 | break; | |
756 | case TX_STATUS_FAIL_DEST_PS: | |
757 | priv->reply_tx_stats.dest_ps++; | |
758 | break; | |
759 | case TX_STATUS_FAIL_HOST_ABORTED: | |
760 | priv->reply_tx_stats.host_abort++; | |
761 | break; | |
762 | case TX_STATUS_FAIL_BT_RETRY: | |
763 | priv->reply_tx_stats.bt_retry++; | |
764 | break; | |
765 | case TX_STATUS_FAIL_STA_INVALID: | |
766 | priv->reply_tx_stats.sta_invalid++; | |
767 | break; | |
768 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
769 | priv->reply_tx_stats.frag_drop++; | |
770 | break; | |
771 | case TX_STATUS_FAIL_TID_DISABLE: | |
772 | priv->reply_tx_stats.tid_disable++; | |
773 | break; | |
774 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
775 | priv->reply_tx_stats.fifo_flush++; | |
776 | break; | |
777 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
778 | priv->reply_tx_stats.insuff_cf_poll++; | |
779 | break; | |
780 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
781 | priv->reply_tx_stats.fail_hw_drop++; | |
782 | break; | |
783 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
784 | priv->reply_tx_stats.sta_color_mismatch++; | |
785 | break; | |
786 | default: | |
787 | priv->reply_tx_stats.unknown++; | |
788 | break; | |
789 | } | |
790 | } | |
791 | ||
792 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
793 | struct ieee80211_tx_info *info, | |
794 | struct iwlagn_tx_resp *tx_resp, | |
795 | bool is_agg) | |
796 | { | |
797 | u16 status = le16_to_cpu(tx_resp->status.status); | |
798 | ||
799 | info->status.rates[0].count = tx_resp->failure_frame + 1; | |
800 | if (is_agg) | |
801 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
802 | info->flags |= iwl_tx_status_to_mac80211(status); | |
803 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
804 | info); | |
805 | if (!iwl_is_tx_success(status)) | |
806 | iwlagn_count_tx_err_status(priv, status); | |
807 | } | |
808 | ||
809 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
810 | u8 frame_count, u32 status) | |
811 | { | |
812 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
813 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
814 | if (!test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) | |
815 | queue_work(priv->shrd->workqueue, &priv->tx_flush); | |
816 | } | |
817 | } | |
818 | ||
247c61d6 EG |
819 | int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb, |
820 | struct iwl_device_cmd *cmd) | |
74bcdb33 | 821 | { |
a0eaad71 EG |
822 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
823 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
824 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 825 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
a0eaad71 EG |
826 | struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
827 | struct ieee80211_hdr *hdr; | |
828 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 829 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
830 | int tid; |
831 | int sta_id; | |
832 | int freed; | |
74bcdb33 | 833 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
834 | unsigned long flags; |
835 | struct sk_buff_head skbs; | |
836 | struct sk_buff *skb; | |
837 | struct iwl_rxon_context *ctx; | |
8ad71bef | 838 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
d0eb6334 | 839 | |
a0eaad71 EG |
840 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
841 | IWLAGN_TX_RES_TID_POS; | |
842 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
843 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 844 | |
a0eaad71 | 845 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
9decde95 | 846 | |
8ad71bef | 847 | if (is_agg) |
a0eaad71 EG |
848 | iwl_rx_reply_tx_agg(priv, tx_resp); |
849 | ||
850 | if (tx_resp->frame_count == 1) { | |
eb9a372a EG |
851 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
852 | next_reclaimed = SEQ_TO_SN(next_reclaimed + 0x10); | |
853 | ||
854 | if (is_agg) { | |
855 | /* If this is an aggregation queue, we can rely on the | |
856 | * ssn since the wifi sequence number corresponds to | |
857 | * the index in the TFD ring (%256). | |
858 | * The seq_ctl is the sequence control of the packet | |
859 | * to which this Tx response relates. But if there is a | |
860 | * hole in the bitmap of the BA we received, this Tx | |
861 | * response may allow to reclaim the hole and all the | |
862 | * subsequent packets that were already acked. | |
863 | * In that case, seq_ctl != ssn, and the next packet | |
864 | * to be reclaimed will be ssn and not seq_ctl. | |
865 | */ | |
866 | next_reclaimed = ssn; | |
867 | } | |
868 | ||
a0eaad71 | 869 | __skb_queue_head_init(&skbs); |
eb9a372a EG |
870 | priv->shrd->tid_data[sta_id][tid].next_reclaimed = |
871 | next_reclaimed; | |
872 | ||
873 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d", | |
874 | next_reclaimed); | |
875 | ||
a0eaad71 | 876 | /*we can free until ssn % q.n_bd not inclusive */ |
464021ff EG |
877 | iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id, |
878 | ssn, status, &skbs); | |
a0eaad71 EG |
879 | freed = 0; |
880 | while (!skb_queue_empty(&skbs)) { | |
881 | skb = __skb_dequeue(&skbs); | |
882 | hdr = (struct ieee80211_hdr *)skb->data; | |
883 | ||
884 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
885 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
886 | ||
887 | info = IEEE80211_SKB_CB(skb); | |
888 | ctx = info->driver_data[0]; | |
dfa2bdba EG |
889 | kmem_cache_free(priv->tx_cmd_pool, |
890 | (info->driver_data[1])); | |
a0eaad71 EG |
891 | |
892 | memset(&info->status, 0, sizeof(info->status)); | |
893 | ||
894 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
895 | iwl_is_associated_ctx(ctx) && ctx->vif && | |
896 | ctx->vif->type == NL80211_IFTYPE_STATION) { | |
897 | ctx->last_tx_rejected = true; | |
81a3de1c EG |
898 | iwl_trans_stop_queue(trans(priv), txq_id, |
899 | "Tx on passive channel"); | |
a0eaad71 EG |
900 | |
901 | IWL_DEBUG_TX_REPLY(priv, | |
902 | "TXQ %d status %s (0x%08x) " | |
903 | "rate_n_flags 0x%x retries %d\n", | |
904 | txq_id, | |
905 | iwl_get_tx_fail_reason(status), | |
906 | status, | |
907 | le32_to_cpu(tx_resp->rate_n_flags), | |
908 | tx_resp->failure_frame); | |
909 | ||
910 | IWL_DEBUG_TX_REPLY(priv, | |
911 | "FrameCnt = %d, idx=%d\n", | |
912 | tx_resp->frame_count, cmd_index); | |
913 | } | |
914 | ||
915 | /* check if BAR is needed */ | |
916 | if (is_agg && !iwl_is_tx_success(status)) | |
917 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
918 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
919 | tx_resp, is_agg); | |
920 | if (!is_agg) | |
921 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
922 | ||
923 | ieee80211_tx_status_irqsafe(priv->hw, skb); | |
924 | ||
925 | freed++; | |
926 | } | |
74bcdb33 | 927 | |
a0eaad71 | 928 | WARN_ON(!is_agg && freed != 1); |
a0eaad71 | 929 | } |
8d801080 | 930 | |
a0eaad71 EG |
931 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
932 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
247c61d6 | 933 | return 0; |
8d801080 WYG |
934 | } |
935 | ||
74bcdb33 WYG |
936 | /** |
937 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
938 | * | |
939 | * Handles block-acknowledge notification from device, which reports success | |
940 | * of frames sent via aggregation. | |
941 | */ | |
247c61d6 EG |
942 | int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
943 | struct iwl_rx_mem_buffer *rxb, | |
944 | struct iwl_device_cmd *cmd) | |
74bcdb33 WYG |
945 | { |
946 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
947 | struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; | |
74bcdb33 | 948 | struct iwl_ht_agg *agg; |
a0eaad71 EG |
949 | struct sk_buff_head reclaimed_skbs; |
950 | struct ieee80211_tx_info *info; | |
951 | struct ieee80211_hdr *hdr; | |
952 | struct sk_buff *skb; | |
953 | unsigned long flags; | |
74bcdb33 WYG |
954 | int sta_id; |
955 | int tid; | |
a0eaad71 | 956 | int freed; |
74bcdb33 WYG |
957 | |
958 | /* "flow" corresponds to Tx queue */ | |
959 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
960 | ||
961 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
962 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
963 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
964 | ||
d6189124 | 965 | if (scd_flow >= hw_params(priv).max_txq_num) { |
74bcdb33 WYG |
966 | IWL_ERR(priv, |
967 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
247c61d6 | 968 | return 0; |
74bcdb33 WYG |
969 | } |
970 | ||
74bcdb33 WYG |
971 | sta_id = ba_resp->sta_id; |
972 | tid = ba_resp->tid; | |
5f85a789 | 973 | agg = &priv->shrd->tid_data[sta_id][tid].agg; |
a0eaad71 | 974 | |
a0eaad71 EG |
975 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
976 | ||
b561e827 | 977 | if (unlikely(agg->txq_id != scd_flow)) { |
735df29a WYG |
978 | /* |
979 | * FIXME: this is a uCode bug which need to be addressed, | |
980 | * log the information and return for now! | |
981 | * since it is possible happen very often and in order | |
982 | * not to fill the syslog, don't enable the logging by default | |
983 | */ | |
984 | IWL_DEBUG_TX_REPLY(priv, | |
985 | "BA scd_flow %d does not match txq_id %d\n", | |
b561e827 | 986 | scd_flow, agg->txq_id); |
a0eaad71 | 987 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
247c61d6 | 988 | return 0; |
b561e827 | 989 | } |
74bcdb33 | 990 | |
a0eaad71 EG |
991 | if (unlikely(!agg->wait_for_ba)) { |
992 | if (unlikely(ba_resp->bitmap)) | |
993 | IWL_ERR(priv, "Received BA when not expected\n"); | |
994 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
247c61d6 | 995 | return 0; |
a0eaad71 | 996 | } |
74bcdb33 WYG |
997 | |
998 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
999 | "sta_id = %d\n", | |
1000 | agg->wait_for_ba, | |
1001 | (u8 *) &ba_resp->sta_addr_lo32, | |
1002 | ba_resp->sta_id); | |
a0eaad71 EG |
1003 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
1004 | "scd_flow = %d, scd_ssn = %d\n", | |
aca15f81 | 1005 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1006 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
b88f5be0 | 1007 | scd_flow, ba_resp_scd_ssn); |
74bcdb33 | 1008 | |
a0eaad71 | 1009 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1010 | agg->wait_for_ba = false; |
a0eaad71 EG |
1011 | |
1012 | /* Sanity check values reported by uCode */ | |
1013 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1014 | IWL_DEBUG_TX_REPLY(priv, | |
1015 | "bogus sent(%d) and ack(%d) count\n", | |
1016 | ba_resp->txed, ba_resp->txed_2_done); | |
1017 | /* | |
1018 | * set txed_2_done = txed, | |
1019 | * so it won't impact rate scale | |
1020 | */ | |
1021 | ba_resp->txed = ba_resp->txed_2_done; | |
1022 | } | |
1023 | IWL_DEBUG_HT(priv, "agg frames sent:%d, acked:%d\n", | |
1024 | ba_resp->txed, ba_resp->txed_2_done); | |
1025 | ||
1026 | __skb_queue_head_init(&reclaimed_skbs); | |
74bcdb33 WYG |
1027 | |
1028 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1029 | * block-ack window (we assume that they've been successfully | |
1030 | * transmitted ... if not, it's too late anyway). */ | |
eb9a372a | 1031 | priv->shrd->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
464021ff EG |
1032 | iwl_trans_reclaim(trans(priv), sta_id, tid, scd_flow, ba_resp_scd_ssn, |
1033 | 0, &reclaimed_skbs); | |
a0eaad71 EG |
1034 | freed = 0; |
1035 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
74bcdb33 | 1036 | |
a0eaad71 EG |
1037 | skb = __skb_dequeue(&reclaimed_skbs); |
1038 | hdr = (struct ieee80211_hdr *)skb->data; | |
69fdb710 | 1039 | |
a0eaad71 EG |
1040 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1041 | freed++; | |
1042 | else | |
1043 | WARN_ON_ONCE(1); | |
1044 | ||
1a849613 EG |
1045 | info = IEEE80211_SKB_CB(skb); |
1046 | kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1])); | |
1047 | ||
1048 | if (freed == 1) { | |
a0eaad71 EG |
1049 | /* this is the first skb we deliver in this batch */ |
1050 | /* put the rate scaling data there */ | |
1051 | info = IEEE80211_SKB_CB(skb); | |
1052 | memset(&info->status, 0, sizeof(info->status)); | |
1053 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1054 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1055 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1056 | info->status.ampdu_len = ba_resp->txed; | |
1057 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1058 | info); | |
1059 | } | |
69fdb710 | 1060 | |
a0eaad71 | 1061 | ieee80211_tx_status_irqsafe(priv->hw, skb); |
69fdb710 JB |
1062 | } |
1063 | ||
a0eaad71 | 1064 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
247c61d6 | 1065 | return 0; |
69fdb710 | 1066 | } |