Commit | Line | Data |
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b305a080 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
51368bf7 | 5 | * Copyright(c) 2008 - 2014 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 | |
410dc5aa | 22 | * in the file called COPYING. |
b305a080 WYG |
23 | * |
24 | * Contact Information: | |
cb2f8277 | 25 | * Intel Linux Wireless <linuxwifi@intel.com> |
b305a080 WYG |
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> | |
b305a080 | 32 | #include <linux/sched.h> |
a0eaad71 | 33 | #include <linux/ieee80211.h> |
b305a080 | 34 | #include "iwl-io.h" |
47c1b496 | 35 | #include "iwl-trans.h" |
1023fdc4 JB |
36 | #include "iwl-agn-hw.h" |
37 | #include "dev.h" | |
38 | #include "agn.h" | |
b305a080 | 39 | |
9eae88fa JB |
40 | static const u8 tid_to_ac[] = { |
41 | IEEE80211_AC_BE, | |
42 | IEEE80211_AC_BK, | |
43 | IEEE80211_AC_BK, | |
44 | IEEE80211_AC_BE, | |
45 | IEEE80211_AC_VI, | |
46 | IEEE80211_AC_VI, | |
47 | IEEE80211_AC_VO, | |
48 | IEEE80211_AC_VO, | |
49 | }; | |
50 | ||
5c3d29fc DF |
51 | static void iwlagn_tx_cmd_protection(struct iwl_priv *priv, |
52 | struct ieee80211_tx_info *info, | |
53 | __le16 fc, __le32 *tx_flags) | |
54 | { | |
55 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS || | |
56 | info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT || | |
57 | info->flags & IEEE80211_TX_CTL_AMPDU) | |
58 | *tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK; | |
59 | } | |
60 | ||
74bcdb33 WYG |
61 | /* |
62 | * handle build REPLY_TX command notification. | |
63 | */ | |
64 | static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv, | |
c6baf7fb JB |
65 | struct sk_buff *skb, |
66 | struct iwl_tx_cmd *tx_cmd, | |
67 | struct ieee80211_tx_info *info, | |
68 | struct ieee80211_hdr *hdr, u8 sta_id) | |
74bcdb33 WYG |
69 | { |
70 | __le16 fc = hdr->frame_control; | |
71 | __le32 tx_flags = tx_cmd->tx_flags; | |
72 | ||
73 | tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2c2def10 JB |
74 | |
75 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
74bcdb33 | 76 | tx_flags |= TX_CMD_FLG_ACK_MSK; |
2c2def10 JB |
77 | else |
78 | tx_flags &= ~TX_CMD_FLG_ACK_MSK; | |
74bcdb33 | 79 | |
2c2def10 JB |
80 | if (ieee80211_is_probe_resp(fc)) |
81 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
82 | else if (ieee80211_is_back_req(fc)) | |
74bcdb33 | 83 | tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; |
d44ae69e | 84 | else if (info->band == IEEE80211_BAND_2GHZ && |
0d8877a1 JB |
85 | priv->lib->bt_params && |
86 | priv->lib->bt_params->advanced_bt_coexist && | |
d44ae69e JB |
87 | (ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) || |
88 | ieee80211_is_reassoc_req(fc) || | |
af61a165 | 89 | info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) |
d44ae69e | 90 | tx_flags |= TX_CMD_FLG_IGNORE_BT; |
74bcdb33 WYG |
91 | |
92 | ||
c6baf7fb | 93 | tx_cmd->sta_id = sta_id; |
74bcdb33 WYG |
94 | if (ieee80211_has_morefrags(fc)) |
95 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
96 | ||
97 | if (ieee80211_is_data_qos(fc)) { | |
98 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
99 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
100 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
101 | } else { | |
3d29dd9b | 102 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; |
123877b8 WYG |
103 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
104 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
105 | else | |
106 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
74bcdb33 WYG |
107 | } |
108 | ||
5c3d29fc | 109 | iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags); |
74bcdb33 WYG |
110 | |
111 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
112 | if (ieee80211_is_mgmt(fc)) { | |
113 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
114 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); | |
115 | else | |
116 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); | |
117 | } else { | |
118 | tx_cmd->timeout.pm_frame_timeout = 0; | |
119 | } | |
120 | ||
121 | tx_cmd->driver_txop = 0; | |
122 | tx_cmd->tx_flags = tx_flags; | |
123 | tx_cmd->next_frame_len = 0; | |
124 | } | |
125 | ||
74bcdb33 | 126 | static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv, |
c6baf7fb JB |
127 | struct iwl_tx_cmd *tx_cmd, |
128 | struct ieee80211_tx_info *info, | |
36323f81 | 129 | struct ieee80211_sta *sta, |
c6baf7fb | 130 | __le16 fc) |
74bcdb33 WYG |
131 | { |
132 | u32 rate_flags; | |
133 | int rate_idx; | |
134 | u8 rts_retry_limit; | |
135 | u8 data_retry_limit; | |
136 | u8 rate_plcp; | |
137 | ||
15b86bff | 138 | if (priv->wowlan) { |
f3129b73 WYG |
139 | rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT; |
140 | data_retry_limit = IWLAGN_LOW_RETRY_LIMIT; | |
141 | } else { | |
142 | /* Set retry limit on RTS packets */ | |
143 | rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT; | |
144 | ||
145 | /* Set retry limit on DATA packets and Probe Responses*/ | |
146 | if (ieee80211_is_probe_resp(fc)) { | |
147 | data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT; | |
148 | rts_retry_limit = | |
149 | min(data_retry_limit, rts_retry_limit); | |
150 | } else if (ieee80211_is_back_req(fc)) | |
151 | data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT; | |
152 | else | |
153 | data_retry_limit = IWLAGN_DEFAULT_TX_RETRY; | |
154 | } | |
74bcdb33 | 155 | |
78558cb4 | 156 | tx_cmd->data_retry_limit = data_retry_limit; |
74bcdb33 WYG |
157 | tx_cmd->rts_retry_limit = rts_retry_limit; |
158 | ||
159 | /* DATA packets will use the uCode station table for rate/antenna | |
160 | * selection */ | |
161 | if (ieee80211_is_data(fc)) { | |
162 | tx_cmd->initial_rate_index = 0; | |
163 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
164 | return; | |
b8deb492 WYG |
165 | } else if (ieee80211_is_back_req(fc)) |
166 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
74bcdb33 WYG |
167 | |
168 | /** | |
169 | * If the current TX rate stored in mac80211 has the MCS bit set, it's | |
170 | * not really a TX rate. Thus, we use the lowest supported rate for | |
171 | * this band. Also use the lowest supported rate if the stored rate | |
172 | * index is invalid. | |
173 | */ | |
174 | rate_idx = info->control.rates[0].idx; | |
175 | if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || | |
176 | (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) | |
26a7ca9a | 177 | rate_idx = rate_lowest_index( |
b7998c8b | 178 | &priv->nvm_data->bands[info->band], sta); |
74bcdb33 WYG |
179 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ |
180 | if (info->band == IEEE80211_BAND_5GHZ) | |
181 | rate_idx += IWL_FIRST_OFDM_RATE; | |
182 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
183 | rate_plcp = iwl_rates[rate_idx].plcp; | |
184 | /* Zero out flags for this packet */ | |
185 | rate_flags = 0; | |
186 | ||
187 | /* Set CCK flag as needed */ | |
188 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
189 | rate_flags |= RATE_MCS_CCK_MSK; | |
190 | ||
74bcdb33 | 191 | /* Set up antennas */ |
e70fe7eb EG |
192 | if (priv->lib->bt_params && |
193 | priv->lib->bt_params->advanced_bt_coexist && | |
194 | priv->bt_full_concurrent) { | |
bee008b7 WYG |
195 | /* operated as 1x1 in full concurrency mode */ |
196 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
b7998c8b | 197 | first_antenna(priv->nvm_data->valid_tx_ant)); |
bee008b7 | 198 | } else |
26a7ca9a JB |
199 | priv->mgmt_tx_ant = iwl_toggle_tx_ant( |
200 | priv, priv->mgmt_tx_ant, | |
b7998c8b | 201 | priv->nvm_data->valid_tx_ant); |
74bcdb33 WYG |
202 | rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant); |
203 | ||
204 | /* Set the rate in the TX cmd */ | |
205 | tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags); | |
206 | } | |
207 | ||
208 | static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv *priv, | |
f2b69ef0 JB |
209 | struct ieee80211_tx_info *info, |
210 | struct iwl_tx_cmd *tx_cmd, | |
211 | struct sk_buff *skb_frag) | |
74bcdb33 WYG |
212 | { |
213 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
214 | ||
97359d12 JB |
215 | switch (keyconf->cipher) { |
216 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
217 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
218 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
219 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
220 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
74bcdb33 WYG |
221 | break; |
222 | ||
97359d12 | 223 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 224 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 225 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
226 | break; |
227 | ||
97359d12 JB |
228 | case WLAN_CIPHER_SUITE_WEP104: |
229 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
230 | /* fall through */ | |
231 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
232 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
233 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
234 | ||
74bcdb33 WYG |
235 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
236 | ||
237 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
238 | "with key %d\n", keyconf->keyidx); | |
239 | break; | |
240 | ||
241 | default: | |
97359d12 | 242 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
243 | break; |
244 | } | |
245 | } | |
246 | ||
955570fc JB |
247 | /** |
248 | * iwl_sta_id_or_broadcast - return sta_id or broadcast sta | |
249 | * @context: the current context | |
250 | * @sta: mac80211 station | |
251 | * | |
252 | * In certain circumstances mac80211 passes a station pointer | |
253 | * that may be %NULL, for example during TX or key setup. In | |
254 | * that case, we need to use the broadcast station, so this | |
255 | * inline wraps that pattern. | |
256 | */ | |
257 | static int iwl_sta_id_or_broadcast(struct iwl_rxon_context *context, | |
258 | struct ieee80211_sta *sta) | |
259 | { | |
260 | int sta_id; | |
261 | ||
262 | if (!sta) | |
263 | return context->bcast_sta_id; | |
264 | ||
265 | sta_id = iwl_sta_id(sta); | |
266 | ||
267 | /* | |
268 | * mac80211 should not be passing a partially | |
269 | * initialised station! | |
270 | */ | |
271 | WARN_ON(sta_id == IWL_INVALID_STATION); | |
272 | ||
273 | return sta_id; | |
274 | } | |
275 | ||
74bcdb33 WYG |
276 | /* |
277 | * start REPLY_TX command process | |
278 | */ | |
36323f81 TH |
279 | int iwlagn_tx_skb(struct iwl_priv *priv, |
280 | struct ieee80211_sta *sta, | |
281 | struct sk_buff *skb) | |
74bcdb33 WYG |
282 | { |
283 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
284 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 285 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 286 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
59c647b6 | 287 | struct iwl_device_cmd *dev_cmd; |
47c1b496 | 288 | struct iwl_tx_cmd *tx_cmd; |
74bcdb33 WYG |
289 | __le16 fc; |
290 | u8 hdr_len; | |
34b5321e EG |
291 | u16 len, seq_number = 0; |
292 | u8 sta_id, tid = IWL_MAX_TID_COUNT; | |
c8a8ab44 | 293 | bool is_agg = false, is_data_qos = false; |
9eae88fa | 294 | int txq_id; |
74bcdb33 | 295 | |
c6baf7fb | 296 | if (info->control.vif) |
a194e324 JB |
297 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
298 | ||
83626404 | 299 | if (iwl_is_rfkill(priv)) { |
74bcdb33 | 300 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 301 | goto drop_unlock_priv; |
74bcdb33 WYG |
302 | } |
303 | ||
304 | fc = hdr->frame_control; | |
305 | ||
306 | #ifdef CONFIG_IWLWIFI_DEBUG | |
307 | if (ieee80211_is_auth(fc)) | |
308 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
309 | else if (ieee80211_is_assoc_req(fc)) | |
310 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
311 | else if (ieee80211_is_reassoc_req(fc)) | |
312 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
313 | #endif | |
314 | ||
79d3eef8 JB |
315 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
316 | struct iwl_wipan_noa_data *noa_data = | |
317 | rcu_dereference(priv->noa_data); | |
318 | ||
319 | if (noa_data && | |
320 | pskb_expand_head(skb, 0, noa_data->length, | |
321 | GFP_ATOMIC) == 0) { | |
322 | memcpy(skb_put(skb, noa_data->length), | |
323 | noa_data->data, noa_data->length); | |
324 | hdr = (struct ieee80211_hdr *)skb->data; | |
325 | } | |
326 | } | |
327 | ||
74bcdb33 WYG |
328 | hdr_len = ieee80211_hdrlen(fc); |
329 | ||
bfd36103 SG |
330 | /* For management frames use broadcast id to do not break aggregation */ |
331 | if (!ieee80211_is_data(fc)) | |
332 | sta_id = ctx->bcast_sta_id; | |
333 | else { | |
334 | /* Find index into station table for destination station */ | |
36323f81 | 335 | sta_id = iwl_sta_id_or_broadcast(ctx, sta); |
bfd36103 SG |
336 | if (sta_id == IWL_INVALID_STATION) { |
337 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
338 | hdr->addr1); | |
e00cf3b9 | 339 | goto drop_unlock_priv; |
bfd36103 | 340 | } |
74bcdb33 WYG |
341 | } |
342 | ||
36323f81 TH |
343 | if (sta) |
344 | sta_priv = (void *)sta->drv_priv; | |
74bcdb33 | 345 | |
67158b67 | 346 | if (sta_priv && sta_priv->asleep && |
02f2f1a9 | 347 | (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) { |
74bcdb33 WYG |
348 | /* |
349 | * This sends an asynchronous command to the device, | |
350 | * but we can rely on it being processed before the | |
351 | * next frame is processed -- and the next frame to | |
352 | * this station is the one that will consume this | |
353 | * counter. | |
354 | * For now set the counter to just 1 since we do not | |
355 | * support uAPSD yet. | |
02f2f1a9 JB |
356 | * |
357 | * FIXME: If we get two non-bufferable frames one | |
358 | * after the other, we might only send out one of | |
359 | * them because this is racy. | |
74bcdb33 WYG |
360 | */ |
361 | iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); | |
362 | } | |
363 | ||
59c647b6 | 364 | dev_cmd = iwl_trans_alloc_tx_cmd(priv->trans); |
dfa2bdba EG |
365 | |
366 | if (unlikely(!dev_cmd)) | |
71cb9924 | 367 | goto drop_unlock_priv; |
74bcdb33 | 368 | |
dfa2bdba | 369 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
3961a61a | 370 | dev_cmd->hdr.cmd = REPLY_TX; |
132f98c2 | 371 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 372 | |
74bcdb33 WYG |
373 | /* Total # bytes to be transmitted */ |
374 | len = (u16)skb->len; | |
375 | tx_cmd->len = cpu_to_le16(len); | |
376 | ||
377 | if (info->control.hw_key) | |
f2b69ef0 | 378 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb); |
74bcdb33 WYG |
379 | |
380 | /* TODO need this for burst mode later on */ | |
d44ae69e | 381 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 | 382 | |
36323f81 | 383 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, sta, fc); |
74bcdb33 | 384 | |
1a849613 EG |
385 | memset(&info->status, 0, sizeof(info->status)); |
386 | ||
2c452297 | 387 | info->driver_data[0] = ctx; |
dfa2bdba | 388 | info->driver_data[1] = dev_cmd; |
11741739 | 389 | /* From now on, we cannot access info->control */ |
2c452297 | 390 | |
fa23cb04 | 391 | spin_lock(&priv->sta_lock); |
71cb9924 | 392 | |
34b5321e EG |
393 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
394 | u8 *qc = NULL; | |
395 | struct iwl_tid_data *tid_data; | |
396 | qc = ieee80211_get_qos_ctl(hdr); | |
397 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
398 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
399 | goto drop_unlock_sta; | |
04cf6824 | 400 | tid_data = &priv->tid_data[sta_id][tid]; |
34b5321e | 401 | |
97756fb1 EG |
402 | /* aggregation is on for this <sta,tid> */ |
403 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
404 | tid_data->agg.state != IWL_AGG_ON) { | |
3c6acb61 JB |
405 | IWL_ERR(priv, |
406 | "TX_CTL_AMPDU while not in AGG: Tx flags = 0x%08x, agg.state = %d\n", | |
97756fb1 | 407 | info->flags, tid_data->agg.state); |
3c6acb61 | 408 | IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d\n", |
9a886586 JB |
409 | sta_id, tid, |
410 | IEEE80211_SEQ_TO_SN(tid_data->seq_number)); | |
97756fb1 EG |
411 | goto drop_unlock_sta; |
412 | } | |
413 | ||
b5326db8 EG |
414 | /* We can receive packets from the stack in IWL_AGG_{ON,OFF} |
415 | * only. Check this here. | |
416 | */ | |
417 | if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON && | |
ebdfb7a1 | 418 | tid_data->agg.state != IWL_AGG_OFF, |
3c6acb61 | 419 | "Tx while agg.state = %d\n", tid_data->agg.state)) |
b5326db8 EG |
420 | goto drop_unlock_sta; |
421 | ||
34b5321e EG |
422 | seq_number = tid_data->seq_number; |
423 | seq_number &= IEEE80211_SCTL_SEQ; | |
424 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
425 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
426 | seq_number += 0x10; | |
c8a8ab44 JB |
427 | |
428 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
429 | is_agg = true; | |
430 | is_data_qos = true; | |
34b5321e EG |
431 | } |
432 | ||
433 | /* Copy MAC header from skb into command buffer */ | |
434 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
435 | ||
f6b12952 EG |
436 | txq_id = info->hw_queue; |
437 | ||
9eae88fa JB |
438 | if (is_agg) |
439 | txq_id = priv->tid_data[sta_id][tid].agg.txq_id; | |
440 | else if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) { | |
9eae88fa JB |
441 | /* |
442 | * The microcode will clear the more data | |
443 | * bit in the last frame it transmits. | |
444 | */ | |
445 | hdr->frame_control |= | |
446 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
f6b12952 | 447 | } |
9eae88fa | 448 | |
1479177b JB |
449 | WARN_ON_ONCE(is_agg && |
450 | priv->queue_to_mac80211[txq_id] != info->hw_queue); | |
451 | ||
1c3fea82 EG |
452 | IWL_DEBUG_TX(priv, "TX to [%d|%d] Q:%d - seq: 0x%x\n", sta_id, tid, |
453 | txq_id, seq_number); | |
454 | ||
68e8dfda | 455 | if (iwl_trans_tx(priv->trans, skb, dev_cmd, txq_id)) |
47c1b496 | 456 | goto drop_unlock_sta; |
2c46f72e | 457 | |
c8a8ab44 | 458 | if (is_data_qos && !ieee80211_has_morefrags(fc)) |
04cf6824 | 459 | priv->tid_data[sta_id][tid].seq_number = seq_number; |
34b5321e | 460 | |
fa23cb04 | 461 | spin_unlock(&priv->sta_lock); |
74bcdb33 | 462 | |
2e34034e JB |
463 | /* |
464 | * Avoid atomic ops if it isn't an associated client. | |
465 | * Also, if this is a packet for aggregation, don't | |
466 | * increase the counter because the ucode will stop | |
467 | * aggregation queues when their respective station | |
468 | * goes to sleep. | |
469 | */ | |
470 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
471 | atomic_inc(&sta_priv->pending_frames); |
472 | ||
74bcdb33 WYG |
473 | return 0; |
474 | ||
2c46f72e | 475 | drop_unlock_sta: |
dfa2bdba | 476 | if (dev_cmd) |
59c647b6 | 477 | iwl_trans_free_tx_cmd(priv->trans, dev_cmd); |
fa23cb04 | 478 | spin_unlock(&priv->sta_lock); |
2c46f72e | 479 | drop_unlock_priv: |
74bcdb33 WYG |
480 | return -1; |
481 | } | |
482 | ||
1479177b | 483 | static int iwlagn_alloc_agg_txq(struct iwl_priv *priv, int mq) |
9eae88fa JB |
484 | { |
485 | int q; | |
486 | ||
487 | for (q = IWLAGN_FIRST_AMPDU_QUEUE; | |
2152268f | 488 | q < priv->cfg->base_params->num_of_queues; q++) { |
9eae88fa | 489 | if (!test_and_set_bit(q, priv->agg_q_alloc)) { |
1479177b | 490 | priv->queue_to_mac80211[q] = mq; |
9eae88fa JB |
491 | return q; |
492 | } | |
493 | } | |
494 | ||
495 | return -ENOSPC; | |
496 | } | |
497 | ||
498 | static void iwlagn_dealloc_agg_txq(struct iwl_priv *priv, int q) | |
499 | { | |
500 | clear_bit(q, priv->agg_q_alloc); | |
1479177b | 501 | priv->queue_to_mac80211[q] = IWL_INVALID_MAC80211_QUEUE; |
9eae88fa JB |
502 | } |
503 | ||
bc237730 EG |
504 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
505 | struct ieee80211_sta *sta, u16 tid) | |
506 | { | |
bc237730 | 507 | struct iwl_tid_data *tid_data; |
9eae88fa | 508 | int sta_id, txq_id; |
682e5f64 | 509 | enum iwl_agg_state agg_state; |
bc237730 EG |
510 | |
511 | sta_id = iwl_sta_id(sta); | |
512 | ||
513 | if (sta_id == IWL_INVALID_STATION) { | |
514 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
515 | return -ENXIO; | |
516 | } | |
517 | ||
fa23cb04 | 518 | spin_lock_bh(&priv->sta_lock); |
bc237730 | 519 | |
04cf6824 | 520 | tid_data = &priv->tid_data[sta_id][tid]; |
da58eefa | 521 | txq_id = tid_data->agg.txq_id; |
bc237730 | 522 | |
da58eefa | 523 | switch (tid_data->agg.state) { |
bc237730 EG |
524 | case IWL_EMPTYING_HW_QUEUE_ADDBA: |
525 | /* | |
526 | * This can happen if the peer stops aggregation | |
527 | * again before we've had a chance to drain the | |
528 | * queue we selected previously, i.e. before the | |
529 | * session was really started completely. | |
530 | */ | |
531 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
532 | goto turn_off; | |
682e5f64 EG |
533 | case IWL_AGG_STARTING: |
534 | /* | |
535 | * This can happen when the session is stopped before | |
536 | * we receive ADDBA response | |
537 | */ | |
538 | IWL_DEBUG_HT(priv, "AGG stop before AGG became operational\n"); | |
539 | goto turn_off; | |
bc237730 EG |
540 | case IWL_AGG_ON: |
541 | break; | |
542 | default: | |
da58eefa EG |
543 | IWL_WARN(priv, |
544 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
545 | sta_id, tid, tid_data->agg.state); | |
fa23cb04 | 546 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
547 | return 0; |
548 | } | |
549 | ||
9a886586 | 550 | tid_data->agg.ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
bc237730 EG |
551 | |
552 | /* There are still packets for this RA / TID in the HW */ | |
9eae88fa JB |
553 | if (!test_bit(txq_id, priv->agg_q_alloc)) { |
554 | IWL_DEBUG_TX_QUEUES(priv, | |
555 | "stopping AGG on STA/TID %d/%d but hwq %d not used\n", | |
556 | sta_id, tid, txq_id); | |
557 | } else if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
da58eefa EG |
558 | IWL_DEBUG_TX_QUEUES(priv, |
559 | "Can't proceed: ssn %d, next_recl = %d\n", | |
bc237730 EG |
560 | tid_data->agg.ssn, |
561 | tid_data->next_reclaimed); | |
da58eefa | 562 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_DELBA; |
fa23cb04 | 563 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
564 | return 0; |
565 | } | |
566 | ||
0ca24daf | 567 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
bc237730 EG |
568 | tid_data->agg.ssn); |
569 | turn_off: | |
da58eefa EG |
570 | agg_state = tid_data->agg.state; |
571 | tid_data->agg.state = IWL_AGG_OFF; | |
bc237730 | 572 | |
fa23cb04 | 573 | spin_unlock_bh(&priv->sta_lock); |
bc237730 | 574 | |
9eae88fa | 575 | if (test_bit(txq_id, priv->agg_q_alloc)) { |
8ff44ef2 EG |
576 | /* |
577 | * If the transport didn't know that we wanted to start | |
578 | * agreggation, don't tell it that we want to stop them. | |
579 | * This can happen when we don't get the addBA response on | |
580 | * time, or we hadn't time to drain the AC queues. | |
682e5f64 | 581 | */ |
8ff44ef2 | 582 | if (agg_state == IWL_AGG_ON) |
d4578ea8 | 583 | iwl_trans_txq_disable(priv->trans, txq_id, true); |
8ff44ef2 EG |
584 | else |
585 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
586 | agg_state); | |
9eae88fa JB |
587 | iwlagn_dealloc_agg_txq(priv, txq_id); |
588 | } | |
bc237730 | 589 | |
fdf426a3 | 590 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
bc237730 EG |
591 | |
592 | return 0; | |
593 | } | |
594 | ||
832f47e3 | 595 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 596 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 597 | { |
1479177b | 598 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
3c69b595 | 599 | struct iwl_tid_data *tid_data; |
9eae88fa | 600 | int sta_id, txq_id, ret; |
74bcdb33 | 601 | |
5bc9890f WYG |
602 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
603 | sta->addr, tid); | |
74bcdb33 | 604 | |
619753ff | 605 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
606 | if (sta_id == IWL_INVALID_STATION) { |
607 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
608 | return -ENXIO; | |
609 | } | |
5f85a789 | 610 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
611 | return -EINVAL; |
612 | ||
04cf6824 | 613 | if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
614 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
615 | return -ENXIO; | |
616 | } | |
617 | ||
1479177b | 618 | txq_id = iwlagn_alloc_agg_txq(priv, ctx->ac_to_queue[tid_to_ac[tid]]); |
9eae88fa JB |
619 | if (txq_id < 0) { |
620 | IWL_DEBUG_TX_QUEUES(priv, | |
621 | "No free aggregation queue for %pM/%d\n", | |
622 | sta->addr, tid); | |
623 | return txq_id; | |
624 | } | |
625 | ||
288712a6 | 626 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
627 | if (ret) |
628 | return ret; | |
629 | ||
fa23cb04 | 630 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 631 | tid_data = &priv->tid_data[sta_id][tid]; |
9a886586 | 632 | tid_data->agg.ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
9eae88fa | 633 | tid_data->agg.txq_id = txq_id; |
3c69b595 EG |
634 | |
635 | *ssn = tid_data->agg.ssn; | |
636 | ||
3c69b595 | 637 | if (*ssn == tid_data->next_reclaimed) { |
0ca24daf | 638 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
3c69b595 | 639 | tid_data->agg.ssn); |
682e5f64 | 640 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 641 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
3c69b595 EG |
642 | } else { |
643 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
0ca24daf | 644 | "next_reclaimed = %d\n", |
3c69b595 EG |
645 | tid_data->agg.ssn, |
646 | tid_data->next_reclaimed); | |
647 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
648 | } | |
fa23cb04 | 649 | spin_unlock_bh(&priv->sta_lock); |
288712a6 | 650 | |
74bcdb33 WYG |
651 | return ret; |
652 | } | |
653 | ||
2d055afd EG |
654 | int iwlagn_tx_agg_flush(struct iwl_priv *priv, struct ieee80211_vif *vif, |
655 | struct ieee80211_sta *sta, u16 tid) | |
656 | { | |
657 | struct iwl_tid_data *tid_data; | |
658 | enum iwl_agg_state agg_state; | |
659 | int sta_id, txq_id; | |
660 | sta_id = iwl_sta_id(sta); | |
661 | ||
662 | /* | |
663 | * First set the agg state to OFF to avoid calling | |
664 | * ieee80211_stop_tx_ba_cb in iwlagn_check_ratid_empty. | |
665 | */ | |
666 | spin_lock_bh(&priv->sta_lock); | |
667 | ||
668 | tid_data = &priv->tid_data[sta_id][tid]; | |
669 | txq_id = tid_data->agg.txq_id; | |
670 | agg_state = tid_data->agg.state; | |
671 | IWL_DEBUG_TX_QUEUES(priv, "Flush AGG: sta %d tid %d q %d state %d\n", | |
672 | sta_id, tid, txq_id, tid_data->agg.state); | |
673 | ||
674 | tid_data->agg.state = IWL_AGG_OFF; | |
675 | ||
676 | spin_unlock_bh(&priv->sta_lock); | |
677 | ||
678 | if (iwlagn_txfifo_flush(priv, BIT(txq_id))) | |
679 | IWL_ERR(priv, "Couldn't flush the AGG queue\n"); | |
680 | ||
681 | if (test_bit(txq_id, priv->agg_q_alloc)) { | |
682 | /* | |
683 | * If the transport didn't know that we wanted to start | |
684 | * agreggation, don't tell it that we want to stop them. | |
685 | * This can happen when we don't get the addBA response on | |
686 | * time, or we hadn't time to drain the AC queues. | |
687 | */ | |
688 | if (agg_state == IWL_AGG_ON) | |
d4578ea8 | 689 | iwl_trans_txq_disable(priv->trans, txq_id, true); |
2d055afd EG |
690 | else |
691 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
692 | agg_state); | |
693 | iwlagn_dealloc_agg_txq(priv, txq_id); | |
694 | } | |
695 | ||
696 | return 0; | |
697 | } | |
698 | ||
822e8b2a EG |
699 | int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, |
700 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
701 | { | |
702 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; | |
703 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
9eae88fa | 704 | int q, fifo; |
822e8b2a EG |
705 | u16 ssn; |
706 | ||
707 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
708 | ||
fa23cb04 | 709 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 710 | ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; |
9eae88fa | 711 | q = priv->tid_data[sta_priv->sta_id][tid].agg.txq_id; |
682e5f64 | 712 | priv->tid_data[sta_priv->sta_id][tid].agg.state = IWL_AGG_ON; |
fa23cb04 | 713 | spin_unlock_bh(&priv->sta_lock); |
822e8b2a | 714 | |
9eae88fa JB |
715 | fifo = ctx->ac_to_fifo[tid_to_ac[tid]]; |
716 | ||
4beaf6c2 | 717 | iwl_trans_txq_enable(priv->trans, q, fifo, sta_priv->sta_id, tid, |
4cf677fd | 718 | buf_size, ssn, 0); |
822e8b2a EG |
719 | |
720 | /* | |
721 | * If the limit is 0, then it wasn't initialised yet, | |
722 | * use the default. We can do that since we take the | |
723 | * minimum below, and we don't want to go above our | |
724 | * default due to hardware restrictions. | |
725 | */ | |
726 | if (sta_priv->max_agg_bufsize == 0) | |
727 | sta_priv->max_agg_bufsize = | |
728 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
729 | ||
730 | /* | |
731 | * Even though in theory the peer could have different | |
732 | * aggregation reorder buffer sizes for different sessions, | |
733 | * our ucode doesn't allow for that and has a global limit | |
734 | * for each station. Therefore, use the minimum of all the | |
735 | * aggregation sessions and our default value. | |
736 | */ | |
737 | sta_priv->max_agg_bufsize = | |
738 | min(sta_priv->max_agg_bufsize, buf_size); | |
739 | ||
9e295116 | 740 | if (priv->hw_params.use_rts_for_aggregation) { |
822e8b2a EG |
741 | /* |
742 | * switch to RTS/CTS if it is the prefer protection | |
743 | * method for HT traffic | |
744 | */ | |
745 | ||
746 | sta_priv->lq_sta.lq.general_params.flags |= | |
747 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; | |
748 | } | |
749 | priv->agg_tids_count++; | |
750 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", | |
751 | priv->agg_tids_count); | |
752 | ||
753 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = | |
754 | sta_priv->max_agg_bufsize; | |
755 | ||
5fb8c182 | 756 | IWL_DEBUG_HT(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
822e8b2a EG |
757 | sta->addr, tid); |
758 | ||
759 | return iwl_send_lq_cmd(priv, ctx, | |
760 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); | |
761 | } | |
762 | ||
20addec6 EG |
763 | static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid) |
764 | { | |
04cf6824 | 765 | struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid]; |
fdf426a3 EG |
766 | enum iwl_rxon_context_id ctx; |
767 | struct ieee80211_vif *vif; | |
768 | u8 *addr; | |
20addec6 | 769 | |
fa23cb04 | 770 | lockdep_assert_held(&priv->sta_lock); |
20addec6 | 771 | |
fdf426a3 EG |
772 | addr = priv->stations[sta_id].sta.sta.addr; |
773 | ctx = priv->stations[sta_id].ctxid; | |
774 | vif = priv->contexts[ctx].vif; | |
775 | ||
04cf6824 | 776 | switch (priv->tid_data[sta_id][tid].agg.state) { |
20addec6 EG |
777 | case IWL_EMPTYING_HW_QUEUE_DELBA: |
778 | /* There are no packets for this RA / TID in the HW any more */ | |
779 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
780 | IWL_DEBUG_TX_QUEUES(priv, | |
3c6acb61 JB |
781 | "Can continue DELBA flow ssn = next_recl = %d\n", |
782 | tid_data->next_reclaimed); | |
d0624be6 | 783 | iwl_trans_txq_disable(priv->trans, |
d4578ea8 | 784 | tid_data->agg.txq_id, true); |
9eae88fa | 785 | iwlagn_dealloc_agg_txq(priv, tid_data->agg.txq_id); |
20addec6 | 786 | tid_data->agg.state = IWL_AGG_OFF; |
fdf426a3 | 787 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
788 | } |
789 | break; | |
790 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
791 | /* There are no packets for this RA / TID in the HW any more */ | |
792 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
793 | IWL_DEBUG_TX_QUEUES(priv, | |
3c6acb61 JB |
794 | "Can continue ADDBA flow ssn = next_recl = %d\n", |
795 | tid_data->next_reclaimed); | |
682e5f64 | 796 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 797 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
798 | } |
799 | break; | |
800 | default: | |
801 | break; | |
802 | } | |
803 | } | |
804 | ||
2e34034e JB |
805 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
806 | struct iwl_rxon_context *ctx, | |
807 | const u8 *addr1) | |
74bcdb33 | 808 | { |
74bcdb33 WYG |
809 | struct ieee80211_sta *sta; |
810 | struct iwl_station_priv *sta_priv; | |
811 | ||
6db6340c | 812 | rcu_read_lock(); |
2e34034e | 813 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
814 | if (sta) { |
815 | sta_priv = (void *)sta->drv_priv; | |
816 | /* avoid atomic ops if this isn't a client */ | |
817 | if (sta_priv->client && | |
818 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
819 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
820 | } | |
6db6340c | 821 | rcu_read_unlock(); |
2e34034e JB |
822 | } |
823 | ||
a0eaad71 EG |
824 | /** |
825 | * translate ucode response to mac80211 tx status control values | |
826 | */ | |
04e1cabe | 827 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 828 | struct ieee80211_tx_info *info) |
2e34034e | 829 | { |
d748b464 | 830 | struct ieee80211_tx_rate *r = &info->status.rates[0]; |
74bcdb33 | 831 | |
d748b464 | 832 | info->status.antenna = |
a0eaad71 EG |
833 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); |
834 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
835 | r->flags |= IEEE80211_TX_RC_MCS; | |
836 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
837 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
838 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
839 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
840 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
841 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
842 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
843 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
844 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
845 | } |
846 | ||
a0eaad71 EG |
847 | #ifdef CONFIG_IWLWIFI_DEBUG |
848 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 849 | { |
a0eaad71 EG |
850 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
851 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 852 | |
a0eaad71 EG |
853 | switch (status & TX_STATUS_MSK) { |
854 | case TX_STATUS_SUCCESS: | |
855 | return "SUCCESS"; | |
856 | TX_STATUS_POSTPONE(DELAY); | |
857 | TX_STATUS_POSTPONE(FEW_BYTES); | |
858 | TX_STATUS_POSTPONE(BT_PRIO); | |
859 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
860 | TX_STATUS_POSTPONE(CALC_TTAK); | |
861 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
862 | TX_STATUS_FAIL(SHORT_LIMIT); | |
863 | TX_STATUS_FAIL(LONG_LIMIT); | |
864 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
865 | TX_STATUS_FAIL(DRAIN_FLOW); | |
866 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
867 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
868 | TX_STATUS_FAIL(DEST_PS); | |
869 | TX_STATUS_FAIL(HOST_ABORTED); | |
870 | TX_STATUS_FAIL(BT_RETRY); | |
871 | TX_STATUS_FAIL(STA_INVALID); | |
872 | TX_STATUS_FAIL(FRAG_DROPPED); | |
873 | TX_STATUS_FAIL(TID_DISABLE); | |
874 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
875 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
876 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
877 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
878 | } |
879 | ||
a0eaad71 | 880 | return "UNKNOWN"; |
74bcdb33 | 881 | |
a0eaad71 EG |
882 | #undef TX_STATUS_FAIL |
883 | #undef TX_STATUS_POSTPONE | |
884 | } | |
885 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 886 | |
04e1cabe EG |
887 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
888 | { | |
889 | status &= AGG_TX_STATUS_MSK; | |
890 | ||
891 | switch (status) { | |
892 | case AGG_TX_STATE_UNDERRUN_MSK: | |
893 | priv->reply_agg_tx_stats.underrun++; | |
894 | break; | |
895 | case AGG_TX_STATE_BT_PRIO_MSK: | |
896 | priv->reply_agg_tx_stats.bt_prio++; | |
897 | break; | |
898 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
899 | priv->reply_agg_tx_stats.few_bytes++; | |
900 | break; | |
901 | case AGG_TX_STATE_ABORT_MSK: | |
902 | priv->reply_agg_tx_stats.abort++; | |
903 | break; | |
904 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
905 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
906 | break; | |
907 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
908 | priv->reply_agg_tx_stats.last_sent_try++; | |
909 | break; | |
910 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
911 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
912 | break; | |
913 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
914 | priv->reply_agg_tx_stats.scd_query++; | |
915 | break; | |
916 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
917 | priv->reply_agg_tx_stats.bad_crc32++; | |
918 | break; | |
919 | case AGG_TX_STATE_RESPONSE_MSK: | |
920 | priv->reply_agg_tx_stats.response++; | |
921 | break; | |
922 | case AGG_TX_STATE_DUMP_TX_MSK: | |
923 | priv->reply_agg_tx_stats.dump_tx++; | |
924 | break; | |
925 | case AGG_TX_STATE_DELAY_TX_MSK: | |
926 | priv->reply_agg_tx_stats.delay_tx++; | |
927 | break; | |
928 | default: | |
929 | priv->reply_agg_tx_stats.unknown++; | |
930 | break; | |
931 | } | |
932 | } | |
933 | ||
cfe41828 EG |
934 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
935 | { | |
936 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
9a886586 | 937 | tx_resp->frame_count) & IEEE80211_MAX_SN; |
cfe41828 EG |
938 | } |
939 | ||
a0eaad71 EG |
940 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
941 | struct iwlagn_tx_resp *tx_resp) | |
942 | { | |
943 | struct agg_tx_status *frame_status = &tx_resp->status; | |
944 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
945 | IWLAGN_TX_RES_TID_POS; | |
946 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
947 | IWLAGN_TX_RES_RA_POS; | |
04cf6824 | 948 | struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
949 | u32 status = le16_to_cpu(tx_resp->status.status); |
950 | int i; | |
951 | ||
3d29dd9b EG |
952 | WARN_ON(tid == IWL_TID_NON_QOS); |
953 | ||
a0eaad71 EG |
954 | if (agg->wait_for_ba) |
955 | IWL_DEBUG_TX_REPLY(priv, | |
956 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 957 | |
a0eaad71 EG |
958 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
959 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
960 | ||
961 | /* | |
962 | * If the BT kill count is non-zero, we'll get this | |
963 | * notification again. | |
964 | */ | |
965 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
0d8877a1 JB |
966 | priv->lib->bt_params && |
967 | priv->lib->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
968 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
969 | } | |
b2502698 | 970 | |
1a849613 EG |
971 | if (tx_resp->frame_count == 1) |
972 | return; | |
973 | ||
cfe41828 EG |
974 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d initial_rate 0x%x ssn %d frm_cnt %d\n", |
975 | agg->txq_id, | |
976 | le32_to_cpu(tx_resp->rate_n_flags), | |
977 | iwlagn_get_scd_ssn(tx_resp), tx_resp->frame_count); | |
978 | ||
a0eaad71 EG |
979 | /* Construct bit-map of pending frames within Tx window */ |
980 | for (i = 0; i < tx_resp->frame_count; i++) { | |
981 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
cfe41828 | 982 | u8 retry_cnt = (fstatus & AGG_TX_TRY_MSK) >> AGG_TX_TRY_POS; |
74bcdb33 | 983 | |
a0eaad71 EG |
984 | if (status & AGG_TX_STATUS_MSK) |
985 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 986 | |
a0eaad71 EG |
987 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
988 | AGG_TX_STATE_ABORT_MSK)) | |
989 | continue; | |
cfe41828 EG |
990 | |
991 | if (status & AGG_TX_STATUS_MSK || retry_cnt > 1) | |
992 | IWL_DEBUG_TX_REPLY(priv, | |
993 | "%d: status %s (0x%04x), try-count (0x%01x)\n", | |
994 | i, | |
995 | iwl_get_agg_tx_fail_reason(fstatus), | |
996 | fstatus & AGG_TX_STATUS_MSK, | |
997 | retry_cnt); | |
74bcdb33 | 998 | } |
74bcdb33 WYG |
999 | } |
1000 | ||
04e1cabe EG |
1001 | #ifdef CONFIG_IWLWIFI_DEBUG |
1002 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
1003 | ||
1004 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
1005 | { | |
1006 | status &= AGG_TX_STATUS_MSK; | |
1007 | switch (status) { | |
1008 | case AGG_TX_STATE_TRANSMITTED: | |
1009 | return "SUCCESS"; | |
1010 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
1011 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
1012 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
1013 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
1014 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
1015 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
1016 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
1017 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
1018 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
1019 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
1020 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
1021 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
1022 | } | |
1023 | ||
1024 | return "UNKNOWN"; | |
1025 | } | |
1026 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1027 | ||
04e1cabe EG |
1028 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
1029 | { | |
1030 | status &= TX_STATUS_MSK; | |
1031 | ||
1032 | switch (status) { | |
1033 | case TX_STATUS_POSTPONE_DELAY: | |
1034 | priv->reply_tx_stats.pp_delay++; | |
1035 | break; | |
1036 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
1037 | priv->reply_tx_stats.pp_few_bytes++; | |
1038 | break; | |
1039 | case TX_STATUS_POSTPONE_BT_PRIO: | |
1040 | priv->reply_tx_stats.pp_bt_prio++; | |
1041 | break; | |
1042 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
1043 | priv->reply_tx_stats.pp_quiet_period++; | |
1044 | break; | |
1045 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
1046 | priv->reply_tx_stats.pp_calc_ttak++; | |
1047 | break; | |
1048 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
1049 | priv->reply_tx_stats.int_crossed_retry++; | |
1050 | break; | |
1051 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
1052 | priv->reply_tx_stats.short_limit++; | |
1053 | break; | |
1054 | case TX_STATUS_FAIL_LONG_LIMIT: | |
1055 | priv->reply_tx_stats.long_limit++; | |
1056 | break; | |
1057 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
1058 | priv->reply_tx_stats.fifo_underrun++; | |
1059 | break; | |
1060 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
1061 | priv->reply_tx_stats.drain_flow++; | |
1062 | break; | |
1063 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
1064 | priv->reply_tx_stats.rfkill_flush++; | |
1065 | break; | |
1066 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
1067 | priv->reply_tx_stats.life_expire++; | |
1068 | break; | |
1069 | case TX_STATUS_FAIL_DEST_PS: | |
1070 | priv->reply_tx_stats.dest_ps++; | |
1071 | break; | |
1072 | case TX_STATUS_FAIL_HOST_ABORTED: | |
1073 | priv->reply_tx_stats.host_abort++; | |
1074 | break; | |
1075 | case TX_STATUS_FAIL_BT_RETRY: | |
1076 | priv->reply_tx_stats.bt_retry++; | |
1077 | break; | |
1078 | case TX_STATUS_FAIL_STA_INVALID: | |
1079 | priv->reply_tx_stats.sta_invalid++; | |
1080 | break; | |
1081 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
1082 | priv->reply_tx_stats.frag_drop++; | |
1083 | break; | |
1084 | case TX_STATUS_FAIL_TID_DISABLE: | |
1085 | priv->reply_tx_stats.tid_disable++; | |
1086 | break; | |
1087 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
1088 | priv->reply_tx_stats.fifo_flush++; | |
1089 | break; | |
1090 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
1091 | priv->reply_tx_stats.insuff_cf_poll++; | |
1092 | break; | |
1093 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
1094 | priv->reply_tx_stats.fail_hw_drop++; | |
1095 | break; | |
1096 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
1097 | priv->reply_tx_stats.sta_color_mismatch++; | |
1098 | break; | |
1099 | default: | |
1100 | priv->reply_tx_stats.unknown++; | |
1101 | break; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
1106 | struct ieee80211_tx_info *info, | |
2eb81a40 | 1107 | struct iwlagn_tx_resp *tx_resp) |
04e1cabe | 1108 | { |
2eb81a40 | 1109 | u16 status = le16_to_cpu(tx_resp->status.status); |
04e1cabe | 1110 | |
c3e5d718 EG |
1111 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
1112 | ||
04e1cabe | 1113 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
04e1cabe EG |
1114 | info->flags |= iwl_tx_status_to_mac80211(status); |
1115 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
1116 | info); | |
1117 | if (!iwl_is_tx_success(status)) | |
1118 | iwlagn_count_tx_err_status(priv, status); | |
1119 | } | |
1120 | ||
1121 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
1122 | u8 frame_count, u32 status) | |
1123 | { | |
1124 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
1125 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
83626404 | 1126 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
1ee158d8 | 1127 | queue_work(priv->workqueue, &priv->tx_flush); |
04e1cabe EG |
1128 | } |
1129 | } | |
1130 | ||
73e686f3 | 1131 | void iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) |
74bcdb33 | 1132 | { |
a0eaad71 EG |
1133 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
1134 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1135 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 1136 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
f8d7c1a1 | 1137 | struct iwlagn_tx_resp *tx_resp = (void *)pkt->data; |
a0eaad71 EG |
1138 | struct ieee80211_hdr *hdr; |
1139 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 1140 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
1141 | int tid; |
1142 | int sta_id; | |
1143 | int freed; | |
74bcdb33 | 1144 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
1145 | struct sk_buff_head skbs; |
1146 | struct sk_buff *skb; | |
1147 | struct iwl_rxon_context *ctx; | |
8ad71bef | 1148 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
d0eb6334 | 1149 | |
a0eaad71 EG |
1150 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
1151 | IWLAGN_TX_RES_TID_POS; | |
1152 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
1153 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 1154 | |
2bfb5092 | 1155 | spin_lock_bh(&priv->sta_lock); |
9decde95 | 1156 | |
cfe41828 EG |
1157 | if (is_agg) { |
1158 | WARN_ON_ONCE(sta_id >= IWLAGN_STATION_COUNT || | |
1159 | tid >= IWL_MAX_TID_COUNT); | |
1160 | if (txq_id != priv->tid_data[sta_id][tid].agg.txq_id) | |
1161 | IWL_ERR(priv, "txq_id mismatch: %d %d\n", txq_id, | |
1162 | priv->tid_data[sta_id][tid].agg.txq_id); | |
a0eaad71 | 1163 | iwl_rx_reply_tx_agg(priv, tx_resp); |
cfe41828 | 1164 | } |
a0eaad71 | 1165 | |
2c6ab7ff JB |
1166 | __skb_queue_head_init(&skbs); |
1167 | ||
a0eaad71 | 1168 | if (tx_resp->frame_count == 1) { |
eb9a372a | 1169 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
9a886586 | 1170 | next_reclaimed = IEEE80211_SEQ_TO_SN(next_reclaimed + 0x10); |
eb9a372a EG |
1171 | |
1172 | if (is_agg) { | |
1173 | /* If this is an aggregation queue, we can rely on the | |
1174 | * ssn since the wifi sequence number corresponds to | |
1175 | * the index in the TFD ring (%256). | |
1176 | * The seq_ctl is the sequence control of the packet | |
1177 | * to which this Tx response relates. But if there is a | |
1178 | * hole in the bitmap of the BA we received, this Tx | |
1179 | * response may allow to reclaim the hole and all the | |
1180 | * subsequent packets that were already acked. | |
1181 | * In that case, seq_ctl != ssn, and the next packet | |
1182 | * to be reclaimed will be ssn and not seq_ctl. | |
1183 | */ | |
1184 | next_reclaimed = ssn; | |
1185 | } | |
1186 | ||
ae023b27 EG |
1187 | if (tid != IWL_TID_NON_QOS) { |
1188 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1189 | next_reclaimed; | |
1190 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1191 | next_reclaimed); | |
1192 | } | |
1193 | ||
27edb1ac EG |
1194 | iwl_trans_reclaim(priv->trans, txq_id, ssn, &skbs); |
1195 | ||
20addec6 | 1196 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1197 | freed = 0; |
2c6ab7ff JB |
1198 | |
1199 | /* process frames */ | |
1200 | skb_queue_walk(&skbs, skb) { | |
a0eaad71 EG |
1201 | hdr = (struct ieee80211_hdr *)skb->data; |
1202 | ||
1203 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
1204 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
1205 | ||
1206 | info = IEEE80211_SKB_CB(skb); | |
1207 | ctx = info->driver_data[0]; | |
59c647b6 EG |
1208 | iwl_trans_free_tx_cmd(priv->trans, |
1209 | info->driver_data[1]); | |
a0eaad71 EG |
1210 | |
1211 | memset(&info->status, 0, sizeof(info->status)); | |
1212 | ||
1213 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
b8730b40 | 1214 | ctx->vif && |
a0eaad71 | 1215 | ctx->vif->type == NL80211_IFTYPE_STATION) { |
e755f882 JB |
1216 | /* block and stop all queues */ |
1217 | priv->passive_no_rx = true; | |
3c6acb61 JB |
1218 | IWL_DEBUG_TX_QUEUES(priv, |
1219 | "stop all queues: passive channel\n"); | |
e755f882 | 1220 | ieee80211_stop_queues(priv->hw); |
a0eaad71 EG |
1221 | |
1222 | IWL_DEBUG_TX_REPLY(priv, | |
1223 | "TXQ %d status %s (0x%08x) " | |
1224 | "rate_n_flags 0x%x retries %d\n", | |
1225 | txq_id, | |
1226 | iwl_get_tx_fail_reason(status), | |
1227 | status, | |
1228 | le32_to_cpu(tx_resp->rate_n_flags), | |
1229 | tx_resp->failure_frame); | |
1230 | ||
1231 | IWL_DEBUG_TX_REPLY(priv, | |
1232 | "FrameCnt = %d, idx=%d\n", | |
1233 | tx_resp->frame_count, cmd_index); | |
1234 | } | |
1235 | ||
1236 | /* check if BAR is needed */ | |
1237 | if (is_agg && !iwl_is_tx_success(status)) | |
1238 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1239 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
2eb81a40 | 1240 | tx_resp); |
a0eaad71 EG |
1241 | if (!is_agg) |
1242 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
1243 | ||
a0eaad71 EG |
1244 | freed++; |
1245 | } | |
74bcdb33 | 1246 | |
f590dcec EG |
1247 | if (tid != IWL_TID_NON_QOS) { |
1248 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1249 | next_reclaimed; | |
1250 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1251 | next_reclaimed); | |
1252 | } | |
1253 | ||
1c3fea82 EG |
1254 | if (!is_agg && freed != 1) |
1255 | IWL_ERR(priv, "Q: %d, freed %d\n", txq_id, freed); | |
622a9268 | 1256 | |
cfe41828 EG |
1257 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x)\n", txq_id, |
1258 | iwl_get_tx_fail_reason(status), status); | |
1c3fea82 | 1259 | |
cfe41828 EG |
1260 | IWL_DEBUG_TX_REPLY(priv, |
1261 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d seq_ctl=0x%x\n", | |
1262 | le32_to_cpu(tx_resp->rate_n_flags), | |
1263 | tx_resp->failure_frame, | |
1264 | SEQ_TO_INDEX(sequence), ssn, | |
1265 | le16_to_cpu(tx_resp->seq_ctl)); | |
1266 | } | |
1c3fea82 | 1267 | |
a0eaad71 | 1268 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
2bfb5092 | 1269 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1270 | |
1271 | while (!skb_queue_empty(&skbs)) { | |
1272 | skb = __skb_dequeue(&skbs); | |
aeb0cf3c | 1273 | ieee80211_tx_status(priv->hw, skb); |
2c6ab7ff | 1274 | } |
8d801080 WYG |
1275 | } |
1276 | ||
74bcdb33 WYG |
1277 | /** |
1278 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
1279 | * | |
1280 | * Handles block-acknowledge notification from device, which reports success | |
1281 | * of frames sent via aggregation. | |
1282 | */ | |
73e686f3 JB |
1283 | void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
1284 | struct iwl_rx_cmd_buffer *rxb) | |
74bcdb33 WYG |
1285 | { |
1286 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
f8d7c1a1 | 1287 | struct iwl_compressed_ba_resp *ba_resp = (void *)pkt->data; |
74bcdb33 | 1288 | struct iwl_ht_agg *agg; |
a0eaad71 | 1289 | struct sk_buff_head reclaimed_skbs; |
a0eaad71 | 1290 | struct sk_buff *skb; |
74bcdb33 WYG |
1291 | int sta_id; |
1292 | int tid; | |
a0eaad71 | 1293 | int freed; |
74bcdb33 WYG |
1294 | |
1295 | /* "flow" corresponds to Tx queue */ | |
1296 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
1297 | ||
1298 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1299 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1300 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
1301 | ||
2152268f | 1302 | if (scd_flow >= priv->cfg->base_params->num_of_queues) { |
74bcdb33 WYG |
1303 | IWL_ERR(priv, |
1304 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
73e686f3 | 1305 | return; |
74bcdb33 WYG |
1306 | } |
1307 | ||
74bcdb33 WYG |
1308 | sta_id = ba_resp->sta_id; |
1309 | tid = ba_resp->tid; | |
04cf6824 | 1310 | agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 | 1311 | |
2bfb5092 | 1312 | spin_lock_bh(&priv->sta_lock); |
a0eaad71 | 1313 | |
76bc10fc EG |
1314 | if (unlikely(!agg->wait_for_ba)) { |
1315 | if (unlikely(ba_resp->bitmap)) | |
1316 | IWL_ERR(priv, "Received BA when not expected\n"); | |
2bfb5092 | 1317 | spin_unlock_bh(&priv->sta_lock); |
73e686f3 | 1318 | return; |
b561e827 | 1319 | } |
74bcdb33 | 1320 | |
27edb1ac EG |
1321 | if (unlikely(scd_flow != agg->txq_id)) { |
1322 | /* | |
1323 | * FIXME: this is a uCode bug which need to be addressed, | |
1324 | * log the information and return for now. | |
1325 | * Since it is can possibly happen very often and in order | |
1326 | * not to fill the syslog, don't use IWL_ERR or IWL_WARN | |
1327 | */ | |
1328 | IWL_DEBUG_TX_QUEUES(priv, | |
1329 | "Bad queue mapping txq_id=%d, agg_txq[sta:%d,tid:%d]=%d\n", | |
1330 | scd_flow, sta_id, tid, agg->txq_id); | |
2bfb5092 | 1331 | spin_unlock_bh(&priv->sta_lock); |
73e686f3 | 1332 | return; |
27edb1ac EG |
1333 | } |
1334 | ||
76bc10fc EG |
1335 | __skb_queue_head_init(&reclaimed_skbs); |
1336 | ||
1337 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1338 | * block-ack window (we assume that they've been successfully | |
1339 | * transmitted ... if not, it's too late anyway). */ | |
27edb1ac EG |
1340 | iwl_trans_reclaim(priv->trans, scd_flow, ba_resp_scd_ssn, |
1341 | &reclaimed_skbs); | |
74bcdb33 WYG |
1342 | |
1343 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
1344 | "sta_id = %d\n", | |
1345 | agg->wait_for_ba, | |
1346 | (u8 *) &ba_resp->sta_addr_lo32, | |
1347 | ba_resp->sta_id); | |
a0eaad71 | 1348 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
a46c3e42 | 1349 | "scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", |
aca15f81 | 1350 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1351 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
a46c3e42 EG |
1352 | scd_flow, ba_resp_scd_ssn, ba_resp->txed, |
1353 | ba_resp->txed_2_done); | |
74bcdb33 | 1354 | |
a0eaad71 | 1355 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1356 | agg->wait_for_ba = false; |
a0eaad71 EG |
1357 | |
1358 | /* Sanity check values reported by uCode */ | |
1359 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1360 | IWL_DEBUG_TX_REPLY(priv, | |
1361 | "bogus sent(%d) and ack(%d) count\n", | |
1362 | ba_resp->txed, ba_resp->txed_2_done); | |
1363 | /* | |
1364 | * set txed_2_done = txed, | |
1365 | * so it won't impact rate scale | |
1366 | */ | |
1367 | ba_resp->txed = ba_resp->txed_2_done; | |
1368 | } | |
a0eaad71 | 1369 | |
04cf6824 | 1370 | priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
76bc10fc | 1371 | |
20addec6 | 1372 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1373 | freed = 0; |
74bcdb33 | 1374 | |
2c6ab7ff | 1375 | skb_queue_walk(&reclaimed_skbs, skb) { |
143582c6 JB |
1376 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1377 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
69fdb710 | 1378 | |
a0eaad71 EG |
1379 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1380 | freed++; | |
1381 | else | |
1382 | WARN_ON_ONCE(1); | |
1383 | ||
59c647b6 | 1384 | iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); |
1a849613 | 1385 | |
143582c6 JB |
1386 | memset(&info->status, 0, sizeof(info->status)); |
1387 | /* Packet was transmitted successfully, failures come as single | |
1388 | * frames because before failing a frame the firmware transmits | |
1389 | * it without aggregation at least once. | |
1390 | */ | |
1391 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1392 | ||
1a849613 | 1393 | if (freed == 1) { |
a0eaad71 EG |
1394 | /* this is the first skb we deliver in this batch */ |
1395 | /* put the rate scaling data there */ | |
1396 | info = IEEE80211_SKB_CB(skb); | |
1397 | memset(&info->status, 0, sizeof(info->status)); | |
a0eaad71 EG |
1398 | info->flags |= IEEE80211_TX_STAT_AMPDU; |
1399 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1400 | info->status.ampdu_len = ba_resp->txed; | |
1401 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1402 | info); | |
1403 | } | |
69fdb710 JB |
1404 | } |
1405 | ||
2bfb5092 | 1406 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1407 | |
1408 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1409 | skb = __skb_dequeue(&reclaimed_skbs); | |
aeb0cf3c | 1410 | ieee80211_tx_status(priv->hw, skb); |
2c6ab7ff | 1411 | } |
69fdb710 | 1412 | } |