Commit | Line | Data |
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b305a080 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
128e63ef | 5 | * Copyright(c) 2008 - 2013 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: | |
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 | 35 | #include "iwl-io.h" |
47c1b496 | 36 | #include "iwl-trans.h" |
1023fdc4 JB |
37 | #include "iwl-agn-hw.h" |
38 | #include "dev.h" | |
39 | #include "agn.h" | |
b305a080 | 40 | |
9eae88fa JB |
41 | static const u8 tid_to_ac[] = { |
42 | IEEE80211_AC_BE, | |
43 | IEEE80211_AC_BK, | |
44 | IEEE80211_AC_BK, | |
45 | IEEE80211_AC_BE, | |
46 | IEEE80211_AC_VI, | |
47 | IEEE80211_AC_VI, | |
48 | IEEE80211_AC_VO, | |
49 | IEEE80211_AC_VO, | |
50 | }; | |
51 | ||
5c3d29fc DF |
52 | static void iwlagn_tx_cmd_protection(struct iwl_priv *priv, |
53 | struct ieee80211_tx_info *info, | |
54 | __le16 fc, __le32 *tx_flags) | |
55 | { | |
56 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS || | |
57 | info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT || | |
58 | info->flags & IEEE80211_TX_CTL_AMPDU) | |
59 | *tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK; | |
60 | } | |
61 | ||
74bcdb33 WYG |
62 | /* |
63 | * handle build REPLY_TX command notification. | |
64 | */ | |
65 | static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv, | |
c6baf7fb JB |
66 | struct sk_buff *skb, |
67 | struct iwl_tx_cmd *tx_cmd, | |
68 | struct ieee80211_tx_info *info, | |
69 | struct ieee80211_hdr *hdr, u8 sta_id) | |
74bcdb33 WYG |
70 | { |
71 | __le16 fc = hdr->frame_control; | |
72 | __le32 tx_flags = tx_cmd->tx_flags; | |
73 | ||
74 | tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2c2def10 JB |
75 | |
76 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
74bcdb33 | 77 | tx_flags |= TX_CMD_FLG_ACK_MSK; |
2c2def10 JB |
78 | else |
79 | tx_flags &= ~TX_CMD_FLG_ACK_MSK; | |
74bcdb33 | 80 | |
2c2def10 JB |
81 | if (ieee80211_is_probe_resp(fc)) |
82 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
83 | else if (ieee80211_is_back_req(fc)) | |
74bcdb33 | 84 | tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; |
d44ae69e | 85 | else if (info->band == IEEE80211_BAND_2GHZ && |
0d8877a1 JB |
86 | priv->lib->bt_params && |
87 | priv->lib->bt_params->advanced_bt_coexist && | |
d44ae69e JB |
88 | (ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) || |
89 | ieee80211_is_reassoc_req(fc) || | |
af61a165 | 90 | info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) |
d44ae69e | 91 | tx_flags |= TX_CMD_FLG_IGNORE_BT; |
74bcdb33 WYG |
92 | |
93 | ||
c6baf7fb | 94 | tx_cmd->sta_id = sta_id; |
74bcdb33 WYG |
95 | if (ieee80211_has_morefrags(fc)) |
96 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
97 | ||
98 | if (ieee80211_is_data_qos(fc)) { | |
99 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
100 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
101 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
102 | } else { | |
3d29dd9b | 103 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; |
123877b8 WYG |
104 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
105 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
106 | else | |
107 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
74bcdb33 WYG |
108 | } |
109 | ||
5c3d29fc | 110 | iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags); |
74bcdb33 WYG |
111 | |
112 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
113 | if (ieee80211_is_mgmt(fc)) { | |
114 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
115 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); | |
116 | else | |
117 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); | |
118 | } else { | |
119 | tx_cmd->timeout.pm_frame_timeout = 0; | |
120 | } | |
121 | ||
122 | tx_cmd->driver_txop = 0; | |
123 | tx_cmd->tx_flags = tx_flags; | |
124 | tx_cmd->next_frame_len = 0; | |
125 | } | |
126 | ||
74bcdb33 | 127 | static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv, |
c6baf7fb JB |
128 | struct iwl_tx_cmd *tx_cmd, |
129 | struct ieee80211_tx_info *info, | |
36323f81 | 130 | struct ieee80211_sta *sta, |
c6baf7fb | 131 | __le16 fc) |
74bcdb33 WYG |
132 | { |
133 | u32 rate_flags; | |
134 | int rate_idx; | |
135 | u8 rts_retry_limit; | |
136 | u8 data_retry_limit; | |
137 | u8 rate_plcp; | |
138 | ||
15b86bff | 139 | if (priv->wowlan) { |
f3129b73 WYG |
140 | rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT; |
141 | data_retry_limit = IWLAGN_LOW_RETRY_LIMIT; | |
142 | } else { | |
143 | /* Set retry limit on RTS packets */ | |
144 | rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT; | |
145 | ||
146 | /* Set retry limit on DATA packets and Probe Responses*/ | |
147 | if (ieee80211_is_probe_resp(fc)) { | |
148 | data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT; | |
149 | rts_retry_limit = | |
150 | min(data_retry_limit, rts_retry_limit); | |
151 | } else if (ieee80211_is_back_req(fc)) | |
152 | data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT; | |
153 | else | |
154 | data_retry_limit = IWLAGN_DEFAULT_TX_RETRY; | |
155 | } | |
74bcdb33 | 156 | |
78558cb4 | 157 | tx_cmd->data_retry_limit = data_retry_limit; |
74bcdb33 WYG |
158 | tx_cmd->rts_retry_limit = rts_retry_limit; |
159 | ||
160 | /* DATA packets will use the uCode station table for rate/antenna | |
161 | * selection */ | |
162 | if (ieee80211_is_data(fc)) { | |
163 | tx_cmd->initial_rate_index = 0; | |
164 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
165 | return; | |
b8deb492 WYG |
166 | } else if (ieee80211_is_back_req(fc)) |
167 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
74bcdb33 WYG |
168 | |
169 | /** | |
170 | * If the current TX rate stored in mac80211 has the MCS bit set, it's | |
171 | * not really a TX rate. Thus, we use the lowest supported rate for | |
172 | * this band. Also use the lowest supported rate if the stored rate | |
173 | * index is invalid. | |
174 | */ | |
175 | rate_idx = info->control.rates[0].idx; | |
176 | if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || | |
177 | (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) | |
26a7ca9a | 178 | rate_idx = rate_lowest_index( |
b7998c8b | 179 | &priv->nvm_data->bands[info->band], sta); |
74bcdb33 WYG |
180 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ |
181 | if (info->band == IEEE80211_BAND_5GHZ) | |
182 | rate_idx += IWL_FIRST_OFDM_RATE; | |
183 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
184 | rate_plcp = iwl_rates[rate_idx].plcp; | |
185 | /* Zero out flags for this packet */ | |
186 | rate_flags = 0; | |
187 | ||
188 | /* Set CCK flag as needed */ | |
189 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
190 | rate_flags |= RATE_MCS_CCK_MSK; | |
191 | ||
74bcdb33 | 192 | /* Set up antennas */ |
0d8877a1 JB |
193 | if (priv->lib->bt_params && |
194 | priv->lib->bt_params->advanced_bt_coexist && | |
7cb1b088 | 195 | priv->bt_full_concurrent) { |
bee008b7 WYG |
196 | /* operated as 1x1 in full concurrency mode */ |
197 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
b7998c8b | 198 | first_antenna(priv->nvm_data->valid_tx_ant)); |
bee008b7 | 199 | } else |
26a7ca9a JB |
200 | priv->mgmt_tx_ant = iwl_toggle_tx_ant( |
201 | priv, priv->mgmt_tx_ant, | |
b7998c8b | 202 | priv->nvm_data->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, | |
f2b69ef0 JB |
210 | struct ieee80211_tx_info *info, |
211 | struct iwl_tx_cmd *tx_cmd, | |
212 | struct sk_buff *skb_frag) | |
74bcdb33 WYG |
213 | { |
214 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
215 | ||
97359d12 JB |
216 | switch (keyconf->cipher) { |
217 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
218 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
219 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
220 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
221 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
74bcdb33 WYG |
222 | break; |
223 | ||
97359d12 | 224 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 225 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 226 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
227 | break; |
228 | ||
97359d12 JB |
229 | case WLAN_CIPHER_SUITE_WEP104: |
230 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
231 | /* fall through */ | |
232 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
233 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
234 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
235 | ||
74bcdb33 WYG |
236 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
237 | ||
238 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
239 | "with key %d\n", keyconf->keyidx); | |
240 | break; | |
241 | ||
242 | default: | |
97359d12 | 243 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
244 | break; |
245 | } | |
246 | } | |
247 | ||
955570fc JB |
248 | /** |
249 | * iwl_sta_id_or_broadcast - return sta_id or broadcast sta | |
250 | * @context: the current context | |
251 | * @sta: mac80211 station | |
252 | * | |
253 | * In certain circumstances mac80211 passes a station pointer | |
254 | * that may be %NULL, for example during TX or key setup. In | |
255 | * that case, we need to use the broadcast station, so this | |
256 | * inline wraps that pattern. | |
257 | */ | |
258 | static int iwl_sta_id_or_broadcast(struct iwl_rxon_context *context, | |
259 | struct ieee80211_sta *sta) | |
260 | { | |
261 | int sta_id; | |
262 | ||
263 | if (!sta) | |
264 | return context->bcast_sta_id; | |
265 | ||
266 | sta_id = iwl_sta_id(sta); | |
267 | ||
268 | /* | |
269 | * mac80211 should not be passing a partially | |
270 | * initialised station! | |
271 | */ | |
272 | WARN_ON(sta_id == IWL_INVALID_STATION); | |
273 | ||
274 | return sta_id; | |
275 | } | |
276 | ||
74bcdb33 WYG |
277 | /* |
278 | * start REPLY_TX command process | |
279 | */ | |
36323f81 TH |
280 | int iwlagn_tx_skb(struct iwl_priv *priv, |
281 | struct ieee80211_sta *sta, | |
282 | struct sk_buff *skb) | |
74bcdb33 WYG |
283 | { |
284 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
285 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 286 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 287 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
59c647b6 | 288 | struct iwl_device_cmd *dev_cmd; |
47c1b496 | 289 | struct iwl_tx_cmd *tx_cmd; |
74bcdb33 WYG |
290 | __le16 fc; |
291 | u8 hdr_len; | |
34b5321e EG |
292 | u16 len, seq_number = 0; |
293 | u8 sta_id, tid = IWL_MAX_TID_COUNT; | |
c8a8ab44 | 294 | bool is_agg = false, is_data_qos = false; |
9eae88fa | 295 | int txq_id; |
74bcdb33 | 296 | |
c6baf7fb | 297 | if (info->control.vif) |
a194e324 JB |
298 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
299 | ||
83626404 | 300 | if (iwl_is_rfkill(priv)) { |
74bcdb33 | 301 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 302 | goto drop_unlock_priv; |
74bcdb33 WYG |
303 | } |
304 | ||
305 | fc = hdr->frame_control; | |
306 | ||
307 | #ifdef CONFIG_IWLWIFI_DEBUG | |
308 | if (ieee80211_is_auth(fc)) | |
309 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
310 | else if (ieee80211_is_assoc_req(fc)) | |
311 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
312 | else if (ieee80211_is_reassoc_req(fc)) | |
313 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
314 | #endif | |
315 | ||
79d3eef8 JB |
316 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
317 | struct iwl_wipan_noa_data *noa_data = | |
318 | rcu_dereference(priv->noa_data); | |
319 | ||
320 | if (noa_data && | |
321 | pskb_expand_head(skb, 0, noa_data->length, | |
322 | GFP_ATOMIC) == 0) { | |
323 | memcpy(skb_put(skb, noa_data->length), | |
324 | noa_data->data, noa_data->length); | |
325 | hdr = (struct ieee80211_hdr *)skb->data; | |
326 | } | |
327 | } | |
328 | ||
74bcdb33 WYG |
329 | hdr_len = ieee80211_hdrlen(fc); |
330 | ||
bfd36103 SG |
331 | /* For management frames use broadcast id to do not break aggregation */ |
332 | if (!ieee80211_is_data(fc)) | |
333 | sta_id = ctx->bcast_sta_id; | |
334 | else { | |
335 | /* Find index into station table for destination station */ | |
36323f81 | 336 | sta_id = iwl_sta_id_or_broadcast(ctx, sta); |
bfd36103 SG |
337 | if (sta_id == IWL_INVALID_STATION) { |
338 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
339 | hdr->addr1); | |
e00cf3b9 | 340 | goto drop_unlock_priv; |
bfd36103 | 341 | } |
74bcdb33 WYG |
342 | } |
343 | ||
36323f81 TH |
344 | if (sta) |
345 | sta_priv = (void *)sta->drv_priv; | |
74bcdb33 | 346 | |
67158b67 | 347 | if (sta_priv && sta_priv->asleep && |
02f2f1a9 | 348 | (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) { |
74bcdb33 WYG |
349 | /* |
350 | * This sends an asynchronous command to the device, | |
351 | * but we can rely on it being processed before the | |
352 | * next frame is processed -- and the next frame to | |
353 | * this station is the one that will consume this | |
354 | * counter. | |
355 | * For now set the counter to just 1 since we do not | |
356 | * support uAPSD yet. | |
02f2f1a9 JB |
357 | * |
358 | * FIXME: If we get two non-bufferable frames one | |
359 | * after the other, we might only send out one of | |
360 | * them because this is racy. | |
74bcdb33 WYG |
361 | */ |
362 | iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); | |
363 | } | |
364 | ||
59c647b6 | 365 | dev_cmd = iwl_trans_alloc_tx_cmd(priv->trans); |
dfa2bdba EG |
366 | |
367 | if (unlikely(!dev_cmd)) | |
71cb9924 | 368 | goto drop_unlock_priv; |
74bcdb33 | 369 | |
dfa2bdba | 370 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
3961a61a | 371 | dev_cmd->hdr.cmd = REPLY_TX; |
132f98c2 | 372 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 373 | |
74bcdb33 WYG |
374 | /* Total # bytes to be transmitted */ |
375 | len = (u16)skb->len; | |
376 | tx_cmd->len = cpu_to_le16(len); | |
377 | ||
378 | if (info->control.hw_key) | |
f2b69ef0 | 379 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb); |
74bcdb33 WYG |
380 | |
381 | /* TODO need this for burst mode later on */ | |
d44ae69e | 382 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 | 383 | |
36323f81 | 384 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, sta, fc); |
74bcdb33 | 385 | |
1a849613 EG |
386 | memset(&info->status, 0, sizeof(info->status)); |
387 | ||
2c452297 | 388 | info->driver_data[0] = ctx; |
dfa2bdba | 389 | info->driver_data[1] = dev_cmd; |
11741739 | 390 | /* From now on, we cannot access info->control */ |
2c452297 | 391 | |
fa23cb04 | 392 | spin_lock(&priv->sta_lock); |
71cb9924 | 393 | |
34b5321e EG |
394 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
395 | u8 *qc = NULL; | |
396 | struct iwl_tid_data *tid_data; | |
397 | qc = ieee80211_get_qos_ctl(hdr); | |
398 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
399 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
400 | goto drop_unlock_sta; | |
04cf6824 | 401 | tid_data = &priv->tid_data[sta_id][tid]; |
34b5321e | 402 | |
97756fb1 EG |
403 | /* aggregation is on for this <sta,tid> */ |
404 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
405 | tid_data->agg.state != IWL_AGG_ON) { | |
406 | IWL_ERR(priv, "TX_CTL_AMPDU while not in AGG:" | |
407 | " Tx flags = 0x%08x, agg.state = %d", | |
408 | info->flags, tid_data->agg.state); | |
409 | IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d", | |
9a886586 JB |
410 | sta_id, tid, |
411 | IEEE80211_SEQ_TO_SN(tid_data->seq_number)); | |
97756fb1 EG |
412 | goto drop_unlock_sta; |
413 | } | |
414 | ||
b5326db8 EG |
415 | /* We can receive packets from the stack in IWL_AGG_{ON,OFF} |
416 | * only. Check this here. | |
417 | */ | |
418 | if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON && | |
ebdfb7a1 | 419 | tid_data->agg.state != IWL_AGG_OFF, |
b5326db8 EG |
420 | "Tx while agg.state = %d", tid_data->agg.state)) |
421 | goto drop_unlock_sta; | |
422 | ||
34b5321e EG |
423 | seq_number = tid_data->seq_number; |
424 | seq_number &= IEEE80211_SCTL_SEQ; | |
425 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
426 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
427 | seq_number += 0x10; | |
c8a8ab44 JB |
428 | |
429 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
430 | is_agg = true; | |
431 | is_data_qos = true; | |
34b5321e EG |
432 | } |
433 | ||
434 | /* Copy MAC header from skb into command buffer */ | |
435 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
436 | ||
f6b12952 EG |
437 | txq_id = info->hw_queue; |
438 | ||
9eae88fa JB |
439 | if (is_agg) |
440 | txq_id = priv->tid_data[sta_id][tid].agg.txq_id; | |
441 | else if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) { | |
9eae88fa JB |
442 | /* |
443 | * The microcode will clear the more data | |
444 | * bit in the last frame it transmits. | |
445 | */ | |
446 | hdr->frame_control |= | |
447 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
f6b12952 | 448 | } |
9eae88fa | 449 | |
1479177b JB |
450 | WARN_ON_ONCE(is_agg && |
451 | priv->queue_to_mac80211[txq_id] != info->hw_queue); | |
452 | ||
1c3fea82 EG |
453 | IWL_DEBUG_TX(priv, "TX to [%d|%d] Q:%d - seq: 0x%x\n", sta_id, tid, |
454 | txq_id, seq_number); | |
455 | ||
68e8dfda | 456 | if (iwl_trans_tx(priv->trans, skb, dev_cmd, txq_id)) |
47c1b496 | 457 | goto drop_unlock_sta; |
2c46f72e | 458 | |
c8a8ab44 | 459 | if (is_data_qos && !ieee80211_has_morefrags(fc)) |
04cf6824 | 460 | priv->tid_data[sta_id][tid].seq_number = seq_number; |
34b5321e | 461 | |
fa23cb04 | 462 | spin_unlock(&priv->sta_lock); |
74bcdb33 | 463 | |
2e34034e JB |
464 | /* |
465 | * Avoid atomic ops if it isn't an associated client. | |
466 | * Also, if this is a packet for aggregation, don't | |
467 | * increase the counter because the ucode will stop | |
468 | * aggregation queues when their respective station | |
469 | * goes to sleep. | |
470 | */ | |
471 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
472 | atomic_inc(&sta_priv->pending_frames); |
473 | ||
74bcdb33 WYG |
474 | return 0; |
475 | ||
2c46f72e | 476 | drop_unlock_sta: |
dfa2bdba | 477 | if (dev_cmd) |
59c647b6 | 478 | iwl_trans_free_tx_cmd(priv->trans, dev_cmd); |
fa23cb04 | 479 | spin_unlock(&priv->sta_lock); |
2c46f72e | 480 | drop_unlock_priv: |
74bcdb33 WYG |
481 | return -1; |
482 | } | |
483 | ||
1479177b | 484 | static int iwlagn_alloc_agg_txq(struct iwl_priv *priv, int mq) |
9eae88fa JB |
485 | { |
486 | int q; | |
487 | ||
488 | for (q = IWLAGN_FIRST_AMPDU_QUEUE; | |
2152268f | 489 | q < priv->cfg->base_params->num_of_queues; q++) { |
9eae88fa | 490 | if (!test_and_set_bit(q, priv->agg_q_alloc)) { |
1479177b | 491 | priv->queue_to_mac80211[q] = mq; |
9eae88fa JB |
492 | return q; |
493 | } | |
494 | } | |
495 | ||
496 | return -ENOSPC; | |
497 | } | |
498 | ||
499 | static void iwlagn_dealloc_agg_txq(struct iwl_priv *priv, int q) | |
500 | { | |
501 | clear_bit(q, priv->agg_q_alloc); | |
1479177b | 502 | priv->queue_to_mac80211[q] = IWL_INVALID_MAC80211_QUEUE; |
9eae88fa JB |
503 | } |
504 | ||
bc237730 EG |
505 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
506 | struct ieee80211_sta *sta, u16 tid) | |
507 | { | |
bc237730 | 508 | struct iwl_tid_data *tid_data; |
9eae88fa | 509 | int sta_id, txq_id; |
682e5f64 | 510 | enum iwl_agg_state agg_state; |
bc237730 EG |
511 | |
512 | sta_id = iwl_sta_id(sta); | |
513 | ||
514 | if (sta_id == IWL_INVALID_STATION) { | |
515 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
516 | return -ENXIO; | |
517 | } | |
518 | ||
fa23cb04 | 519 | spin_lock_bh(&priv->sta_lock); |
bc237730 | 520 | |
04cf6824 | 521 | tid_data = &priv->tid_data[sta_id][tid]; |
da58eefa | 522 | txq_id = tid_data->agg.txq_id; |
bc237730 | 523 | |
da58eefa | 524 | switch (tid_data->agg.state) { |
bc237730 EG |
525 | case IWL_EMPTYING_HW_QUEUE_ADDBA: |
526 | /* | |
527 | * This can happen if the peer stops aggregation | |
528 | * again before we've had a chance to drain the | |
529 | * queue we selected previously, i.e. before the | |
530 | * session was really started completely. | |
531 | */ | |
532 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
533 | goto turn_off; | |
682e5f64 EG |
534 | case IWL_AGG_STARTING: |
535 | /* | |
536 | * This can happen when the session is stopped before | |
537 | * we receive ADDBA response | |
538 | */ | |
539 | IWL_DEBUG_HT(priv, "AGG stop before AGG became operational\n"); | |
540 | goto turn_off; | |
bc237730 EG |
541 | case IWL_AGG_ON: |
542 | break; | |
543 | default: | |
da58eefa EG |
544 | IWL_WARN(priv, |
545 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
546 | sta_id, tid, tid_data->agg.state); | |
fa23cb04 | 547 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
548 | return 0; |
549 | } | |
550 | ||
9a886586 | 551 | tid_data->agg.ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
bc237730 EG |
552 | |
553 | /* There are still packets for this RA / TID in the HW */ | |
9eae88fa JB |
554 | if (!test_bit(txq_id, priv->agg_q_alloc)) { |
555 | IWL_DEBUG_TX_QUEUES(priv, | |
556 | "stopping AGG on STA/TID %d/%d but hwq %d not used\n", | |
557 | sta_id, tid, txq_id); | |
558 | } else if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
da58eefa EG |
559 | IWL_DEBUG_TX_QUEUES(priv, |
560 | "Can't proceed: ssn %d, next_recl = %d\n", | |
bc237730 EG |
561 | tid_data->agg.ssn, |
562 | tid_data->next_reclaimed); | |
da58eefa | 563 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_DELBA; |
fa23cb04 | 564 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
565 | return 0; |
566 | } | |
567 | ||
0ca24daf | 568 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
bc237730 EG |
569 | tid_data->agg.ssn); |
570 | turn_off: | |
da58eefa EG |
571 | agg_state = tid_data->agg.state; |
572 | tid_data->agg.state = IWL_AGG_OFF; | |
bc237730 | 573 | |
fa23cb04 | 574 | spin_unlock_bh(&priv->sta_lock); |
bc237730 | 575 | |
9eae88fa | 576 | if (test_bit(txq_id, priv->agg_q_alloc)) { |
8ff44ef2 EG |
577 | /* |
578 | * If the transport didn't know that we wanted to start | |
579 | * agreggation, don't tell it that we want to stop them. | |
580 | * This can happen when we don't get the addBA response on | |
581 | * time, or we hadn't time to drain the AC queues. | |
682e5f64 | 582 | */ |
8ff44ef2 | 583 | if (agg_state == IWL_AGG_ON) |
d0624be6 | 584 | iwl_trans_txq_disable(priv->trans, txq_id); |
8ff44ef2 EG |
585 | else |
586 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
587 | agg_state); | |
9eae88fa JB |
588 | iwlagn_dealloc_agg_txq(priv, txq_id); |
589 | } | |
bc237730 | 590 | |
fdf426a3 | 591 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
bc237730 EG |
592 | |
593 | return 0; | |
594 | } | |
595 | ||
832f47e3 | 596 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 597 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 598 | { |
1479177b | 599 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
3c69b595 | 600 | struct iwl_tid_data *tid_data; |
9eae88fa | 601 | int sta_id, txq_id, ret; |
74bcdb33 | 602 | |
5bc9890f WYG |
603 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
604 | sta->addr, tid); | |
74bcdb33 | 605 | |
619753ff | 606 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
607 | if (sta_id == IWL_INVALID_STATION) { |
608 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
609 | return -ENXIO; | |
610 | } | |
5f85a789 | 611 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
612 | return -EINVAL; |
613 | ||
04cf6824 | 614 | if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
615 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
616 | return -ENXIO; | |
617 | } | |
618 | ||
1479177b | 619 | txq_id = iwlagn_alloc_agg_txq(priv, ctx->ac_to_queue[tid_to_ac[tid]]); |
9eae88fa JB |
620 | if (txq_id < 0) { |
621 | IWL_DEBUG_TX_QUEUES(priv, | |
622 | "No free aggregation queue for %pM/%d\n", | |
623 | sta->addr, tid); | |
624 | return txq_id; | |
625 | } | |
626 | ||
288712a6 | 627 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
628 | if (ret) |
629 | return ret; | |
630 | ||
fa23cb04 | 631 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 632 | tid_data = &priv->tid_data[sta_id][tid]; |
9a886586 | 633 | tid_data->agg.ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
9eae88fa | 634 | tid_data->agg.txq_id = txq_id; |
3c69b595 EG |
635 | |
636 | *ssn = tid_data->agg.ssn; | |
637 | ||
3c69b595 | 638 | if (*ssn == tid_data->next_reclaimed) { |
0ca24daf | 639 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
3c69b595 | 640 | tid_data->agg.ssn); |
682e5f64 | 641 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 642 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
3c69b595 EG |
643 | } else { |
644 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
0ca24daf | 645 | "next_reclaimed = %d\n", |
3c69b595 EG |
646 | tid_data->agg.ssn, |
647 | tid_data->next_reclaimed); | |
648 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
649 | } | |
fa23cb04 | 650 | spin_unlock_bh(&priv->sta_lock); |
288712a6 | 651 | |
74bcdb33 WYG |
652 | return ret; |
653 | } | |
654 | ||
2d055afd EG |
655 | int iwlagn_tx_agg_flush(struct iwl_priv *priv, struct ieee80211_vif *vif, |
656 | struct ieee80211_sta *sta, u16 tid) | |
657 | { | |
658 | struct iwl_tid_data *tid_data; | |
659 | enum iwl_agg_state agg_state; | |
660 | int sta_id, txq_id; | |
661 | sta_id = iwl_sta_id(sta); | |
662 | ||
663 | /* | |
664 | * First set the agg state to OFF to avoid calling | |
665 | * ieee80211_stop_tx_ba_cb in iwlagn_check_ratid_empty. | |
666 | */ | |
667 | spin_lock_bh(&priv->sta_lock); | |
668 | ||
669 | tid_data = &priv->tid_data[sta_id][tid]; | |
670 | txq_id = tid_data->agg.txq_id; | |
671 | agg_state = tid_data->agg.state; | |
672 | IWL_DEBUG_TX_QUEUES(priv, "Flush AGG: sta %d tid %d q %d state %d\n", | |
673 | sta_id, tid, txq_id, tid_data->agg.state); | |
674 | ||
675 | tid_data->agg.state = IWL_AGG_OFF; | |
676 | ||
677 | spin_unlock_bh(&priv->sta_lock); | |
678 | ||
679 | if (iwlagn_txfifo_flush(priv, BIT(txq_id))) | |
680 | IWL_ERR(priv, "Couldn't flush the AGG queue\n"); | |
681 | ||
682 | if (test_bit(txq_id, priv->agg_q_alloc)) { | |
683 | /* | |
684 | * If the transport didn't know that we wanted to start | |
685 | * agreggation, don't tell it that we want to stop them. | |
686 | * This can happen when we don't get the addBA response on | |
687 | * time, or we hadn't time to drain the AC queues. | |
688 | */ | |
689 | if (agg_state == IWL_AGG_ON) | |
690 | iwl_trans_txq_disable(priv->trans, txq_id); | |
691 | else | |
692 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
693 | agg_state); | |
694 | iwlagn_dealloc_agg_txq(priv, txq_id); | |
695 | } | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
822e8b2a EG |
700 | int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, |
701 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
702 | { | |
703 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; | |
704 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
9eae88fa | 705 | int q, fifo; |
822e8b2a EG |
706 | u16 ssn; |
707 | ||
708 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
709 | ||
fa23cb04 | 710 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 711 | ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; |
9eae88fa | 712 | q = priv->tid_data[sta_priv->sta_id][tid].agg.txq_id; |
682e5f64 | 713 | priv->tid_data[sta_priv->sta_id][tid].agg.state = IWL_AGG_ON; |
fa23cb04 | 714 | spin_unlock_bh(&priv->sta_lock); |
822e8b2a | 715 | |
9eae88fa JB |
716 | fifo = ctx->ac_to_fifo[tid_to_ac[tid]]; |
717 | ||
4beaf6c2 EG |
718 | iwl_trans_txq_enable(priv->trans, q, fifo, sta_priv->sta_id, tid, |
719 | buf_size, ssn); | |
822e8b2a EG |
720 | |
721 | /* | |
722 | * If the limit is 0, then it wasn't initialised yet, | |
723 | * use the default. We can do that since we take the | |
724 | * minimum below, and we don't want to go above our | |
725 | * default due to hardware restrictions. | |
726 | */ | |
727 | if (sta_priv->max_agg_bufsize == 0) | |
728 | sta_priv->max_agg_bufsize = | |
729 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
730 | ||
731 | /* | |
732 | * Even though in theory the peer could have different | |
733 | * aggregation reorder buffer sizes for different sessions, | |
734 | * our ucode doesn't allow for that and has a global limit | |
735 | * for each station. Therefore, use the minimum of all the | |
736 | * aggregation sessions and our default value. | |
737 | */ | |
738 | sta_priv->max_agg_bufsize = | |
739 | min(sta_priv->max_agg_bufsize, buf_size); | |
740 | ||
9e295116 | 741 | if (priv->hw_params.use_rts_for_aggregation) { |
822e8b2a EG |
742 | /* |
743 | * switch to RTS/CTS if it is the prefer protection | |
744 | * method for HT traffic | |
745 | */ | |
746 | ||
747 | sta_priv->lq_sta.lq.general_params.flags |= | |
748 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; | |
749 | } | |
750 | priv->agg_tids_count++; | |
751 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", | |
752 | priv->agg_tids_count); | |
753 | ||
754 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = | |
755 | sta_priv->max_agg_bufsize; | |
756 | ||
5fb8c182 | 757 | IWL_DEBUG_HT(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
822e8b2a EG |
758 | sta->addr, tid); |
759 | ||
760 | return iwl_send_lq_cmd(priv, ctx, | |
761 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); | |
762 | } | |
763 | ||
20addec6 EG |
764 | static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid) |
765 | { | |
04cf6824 | 766 | struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid]; |
fdf426a3 EG |
767 | enum iwl_rxon_context_id ctx; |
768 | struct ieee80211_vif *vif; | |
769 | u8 *addr; | |
20addec6 | 770 | |
fa23cb04 | 771 | lockdep_assert_held(&priv->sta_lock); |
20addec6 | 772 | |
fdf426a3 EG |
773 | addr = priv->stations[sta_id].sta.sta.addr; |
774 | ctx = priv->stations[sta_id].ctxid; | |
775 | vif = priv->contexts[ctx].vif; | |
776 | ||
04cf6824 | 777 | switch (priv->tid_data[sta_id][tid].agg.state) { |
20addec6 EG |
778 | case IWL_EMPTYING_HW_QUEUE_DELBA: |
779 | /* There are no packets for this RA / TID in the HW any more */ | |
780 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
781 | IWL_DEBUG_TX_QUEUES(priv, | |
782 | "Can continue DELBA flow ssn = next_recl =" | |
783 | " %d", tid_data->next_reclaimed); | |
d0624be6 EG |
784 | iwl_trans_txq_disable(priv->trans, |
785 | tid_data->agg.txq_id); | |
9eae88fa | 786 | iwlagn_dealloc_agg_txq(priv, tid_data->agg.txq_id); |
20addec6 | 787 | tid_data->agg.state = IWL_AGG_OFF; |
fdf426a3 | 788 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
789 | } |
790 | break; | |
791 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
792 | /* There are no packets for this RA / TID in the HW any more */ | |
793 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
794 | IWL_DEBUG_TX_QUEUES(priv, | |
795 | "Can continue ADDBA flow ssn = next_recl =" | |
796 | " %d", tid_data->next_reclaimed); | |
682e5f64 | 797 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 798 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
799 | } |
800 | break; | |
801 | default: | |
802 | break; | |
803 | } | |
804 | } | |
805 | ||
2e34034e JB |
806 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
807 | struct iwl_rxon_context *ctx, | |
808 | const u8 *addr1) | |
74bcdb33 | 809 | { |
74bcdb33 WYG |
810 | struct ieee80211_sta *sta; |
811 | struct iwl_station_priv *sta_priv; | |
812 | ||
6db6340c | 813 | rcu_read_lock(); |
2e34034e | 814 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
815 | if (sta) { |
816 | sta_priv = (void *)sta->drv_priv; | |
817 | /* avoid atomic ops if this isn't a client */ | |
818 | if (sta_priv->client && | |
819 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
820 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
821 | } | |
6db6340c | 822 | rcu_read_unlock(); |
2e34034e JB |
823 | } |
824 | ||
a0eaad71 EG |
825 | /** |
826 | * translate ucode response to mac80211 tx status control values | |
827 | */ | |
04e1cabe | 828 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 829 | struct ieee80211_tx_info *info) |
2e34034e | 830 | { |
d748b464 | 831 | struct ieee80211_tx_rate *r = &info->status.rates[0]; |
74bcdb33 | 832 | |
d748b464 | 833 | info->status.antenna = |
a0eaad71 EG |
834 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); |
835 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
836 | r->flags |= IEEE80211_TX_RC_MCS; | |
837 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
838 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
839 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
840 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
841 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
842 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
843 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
844 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
845 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
846 | } |
847 | ||
a0eaad71 EG |
848 | #ifdef CONFIG_IWLWIFI_DEBUG |
849 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 850 | { |
a0eaad71 EG |
851 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
852 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 853 | |
a0eaad71 EG |
854 | switch (status & TX_STATUS_MSK) { |
855 | case TX_STATUS_SUCCESS: | |
856 | return "SUCCESS"; | |
857 | TX_STATUS_POSTPONE(DELAY); | |
858 | TX_STATUS_POSTPONE(FEW_BYTES); | |
859 | TX_STATUS_POSTPONE(BT_PRIO); | |
860 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
861 | TX_STATUS_POSTPONE(CALC_TTAK); | |
862 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
863 | TX_STATUS_FAIL(SHORT_LIMIT); | |
864 | TX_STATUS_FAIL(LONG_LIMIT); | |
865 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
866 | TX_STATUS_FAIL(DRAIN_FLOW); | |
867 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
868 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
869 | TX_STATUS_FAIL(DEST_PS); | |
870 | TX_STATUS_FAIL(HOST_ABORTED); | |
871 | TX_STATUS_FAIL(BT_RETRY); | |
872 | TX_STATUS_FAIL(STA_INVALID); | |
873 | TX_STATUS_FAIL(FRAG_DROPPED); | |
874 | TX_STATUS_FAIL(TID_DISABLE); | |
875 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
876 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
877 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
878 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
879 | } |
880 | ||
a0eaad71 | 881 | return "UNKNOWN"; |
74bcdb33 | 882 | |
a0eaad71 EG |
883 | #undef TX_STATUS_FAIL |
884 | #undef TX_STATUS_POSTPONE | |
885 | } | |
886 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 887 | |
04e1cabe EG |
888 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
889 | { | |
890 | status &= AGG_TX_STATUS_MSK; | |
891 | ||
892 | switch (status) { | |
893 | case AGG_TX_STATE_UNDERRUN_MSK: | |
894 | priv->reply_agg_tx_stats.underrun++; | |
895 | break; | |
896 | case AGG_TX_STATE_BT_PRIO_MSK: | |
897 | priv->reply_agg_tx_stats.bt_prio++; | |
898 | break; | |
899 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
900 | priv->reply_agg_tx_stats.few_bytes++; | |
901 | break; | |
902 | case AGG_TX_STATE_ABORT_MSK: | |
903 | priv->reply_agg_tx_stats.abort++; | |
904 | break; | |
905 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
906 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
907 | break; | |
908 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
909 | priv->reply_agg_tx_stats.last_sent_try++; | |
910 | break; | |
911 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
912 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
913 | break; | |
914 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
915 | priv->reply_agg_tx_stats.scd_query++; | |
916 | break; | |
917 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
918 | priv->reply_agg_tx_stats.bad_crc32++; | |
919 | break; | |
920 | case AGG_TX_STATE_RESPONSE_MSK: | |
921 | priv->reply_agg_tx_stats.response++; | |
922 | break; | |
923 | case AGG_TX_STATE_DUMP_TX_MSK: | |
924 | priv->reply_agg_tx_stats.dump_tx++; | |
925 | break; | |
926 | case AGG_TX_STATE_DELAY_TX_MSK: | |
927 | priv->reply_agg_tx_stats.delay_tx++; | |
928 | break; | |
929 | default: | |
930 | priv->reply_agg_tx_stats.unknown++; | |
931 | break; | |
932 | } | |
933 | } | |
934 | ||
cfe41828 EG |
935 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
936 | { | |
937 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
9a886586 | 938 | tx_resp->frame_count) & IEEE80211_MAX_SN; |
cfe41828 EG |
939 | } |
940 | ||
a0eaad71 EG |
941 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
942 | struct iwlagn_tx_resp *tx_resp) | |
943 | { | |
944 | struct agg_tx_status *frame_status = &tx_resp->status; | |
945 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
946 | IWLAGN_TX_RES_TID_POS; | |
947 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
948 | IWLAGN_TX_RES_RA_POS; | |
04cf6824 | 949 | struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
950 | u32 status = le16_to_cpu(tx_resp->status.status); |
951 | int i; | |
952 | ||
3d29dd9b EG |
953 | WARN_ON(tid == IWL_TID_NON_QOS); |
954 | ||
a0eaad71 EG |
955 | if (agg->wait_for_ba) |
956 | IWL_DEBUG_TX_REPLY(priv, | |
957 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 958 | |
a0eaad71 EG |
959 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
960 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
961 | ||
962 | /* | |
963 | * If the BT kill count is non-zero, we'll get this | |
964 | * notification again. | |
965 | */ | |
966 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
0d8877a1 JB |
967 | priv->lib->bt_params && |
968 | priv->lib->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
969 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
970 | } | |
b2502698 | 971 | |
1a849613 EG |
972 | if (tx_resp->frame_count == 1) |
973 | return; | |
974 | ||
cfe41828 EG |
975 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d initial_rate 0x%x ssn %d frm_cnt %d\n", |
976 | agg->txq_id, | |
977 | le32_to_cpu(tx_resp->rate_n_flags), | |
978 | iwlagn_get_scd_ssn(tx_resp), tx_resp->frame_count); | |
979 | ||
a0eaad71 EG |
980 | /* Construct bit-map of pending frames within Tx window */ |
981 | for (i = 0; i < tx_resp->frame_count; i++) { | |
982 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
cfe41828 | 983 | u8 retry_cnt = (fstatus & AGG_TX_TRY_MSK) >> AGG_TX_TRY_POS; |
74bcdb33 | 984 | |
a0eaad71 EG |
985 | if (status & AGG_TX_STATUS_MSK) |
986 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 987 | |
a0eaad71 EG |
988 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
989 | AGG_TX_STATE_ABORT_MSK)) | |
990 | continue; | |
cfe41828 EG |
991 | |
992 | if (status & AGG_TX_STATUS_MSK || retry_cnt > 1) | |
993 | IWL_DEBUG_TX_REPLY(priv, | |
994 | "%d: status %s (0x%04x), try-count (0x%01x)\n", | |
995 | i, | |
996 | iwl_get_agg_tx_fail_reason(fstatus), | |
997 | fstatus & AGG_TX_STATUS_MSK, | |
998 | retry_cnt); | |
74bcdb33 | 999 | } |
74bcdb33 WYG |
1000 | } |
1001 | ||
04e1cabe EG |
1002 | #ifdef CONFIG_IWLWIFI_DEBUG |
1003 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
1004 | ||
1005 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
1006 | { | |
1007 | status &= AGG_TX_STATUS_MSK; | |
1008 | switch (status) { | |
1009 | case AGG_TX_STATE_TRANSMITTED: | |
1010 | return "SUCCESS"; | |
1011 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
1012 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
1013 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
1014 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
1015 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
1016 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
1017 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
1018 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
1019 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
1020 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
1021 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
1022 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
1023 | } | |
1024 | ||
1025 | return "UNKNOWN"; | |
1026 | } | |
1027 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1028 | ||
04e1cabe EG |
1029 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
1030 | { | |
1031 | status &= TX_STATUS_MSK; | |
1032 | ||
1033 | switch (status) { | |
1034 | case TX_STATUS_POSTPONE_DELAY: | |
1035 | priv->reply_tx_stats.pp_delay++; | |
1036 | break; | |
1037 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
1038 | priv->reply_tx_stats.pp_few_bytes++; | |
1039 | break; | |
1040 | case TX_STATUS_POSTPONE_BT_PRIO: | |
1041 | priv->reply_tx_stats.pp_bt_prio++; | |
1042 | break; | |
1043 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
1044 | priv->reply_tx_stats.pp_quiet_period++; | |
1045 | break; | |
1046 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
1047 | priv->reply_tx_stats.pp_calc_ttak++; | |
1048 | break; | |
1049 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
1050 | priv->reply_tx_stats.int_crossed_retry++; | |
1051 | break; | |
1052 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
1053 | priv->reply_tx_stats.short_limit++; | |
1054 | break; | |
1055 | case TX_STATUS_FAIL_LONG_LIMIT: | |
1056 | priv->reply_tx_stats.long_limit++; | |
1057 | break; | |
1058 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
1059 | priv->reply_tx_stats.fifo_underrun++; | |
1060 | break; | |
1061 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
1062 | priv->reply_tx_stats.drain_flow++; | |
1063 | break; | |
1064 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
1065 | priv->reply_tx_stats.rfkill_flush++; | |
1066 | break; | |
1067 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
1068 | priv->reply_tx_stats.life_expire++; | |
1069 | break; | |
1070 | case TX_STATUS_FAIL_DEST_PS: | |
1071 | priv->reply_tx_stats.dest_ps++; | |
1072 | break; | |
1073 | case TX_STATUS_FAIL_HOST_ABORTED: | |
1074 | priv->reply_tx_stats.host_abort++; | |
1075 | break; | |
1076 | case TX_STATUS_FAIL_BT_RETRY: | |
1077 | priv->reply_tx_stats.bt_retry++; | |
1078 | break; | |
1079 | case TX_STATUS_FAIL_STA_INVALID: | |
1080 | priv->reply_tx_stats.sta_invalid++; | |
1081 | break; | |
1082 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
1083 | priv->reply_tx_stats.frag_drop++; | |
1084 | break; | |
1085 | case TX_STATUS_FAIL_TID_DISABLE: | |
1086 | priv->reply_tx_stats.tid_disable++; | |
1087 | break; | |
1088 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
1089 | priv->reply_tx_stats.fifo_flush++; | |
1090 | break; | |
1091 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
1092 | priv->reply_tx_stats.insuff_cf_poll++; | |
1093 | break; | |
1094 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
1095 | priv->reply_tx_stats.fail_hw_drop++; | |
1096 | break; | |
1097 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
1098 | priv->reply_tx_stats.sta_color_mismatch++; | |
1099 | break; | |
1100 | default: | |
1101 | priv->reply_tx_stats.unknown++; | |
1102 | break; | |
1103 | } | |
1104 | } | |
1105 | ||
1106 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
1107 | struct ieee80211_tx_info *info, | |
2eb81a40 | 1108 | struct iwlagn_tx_resp *tx_resp) |
04e1cabe | 1109 | { |
2eb81a40 | 1110 | u16 status = le16_to_cpu(tx_resp->status.status); |
04e1cabe | 1111 | |
c3e5d718 EG |
1112 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
1113 | ||
04e1cabe | 1114 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
04e1cabe EG |
1115 | info->flags |= iwl_tx_status_to_mac80211(status); |
1116 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
1117 | info); | |
1118 | if (!iwl_is_tx_success(status)) | |
1119 | iwlagn_count_tx_err_status(priv, status); | |
1120 | } | |
1121 | ||
1122 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
1123 | u8 frame_count, u32 status) | |
1124 | { | |
1125 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
1126 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
83626404 | 1127 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
1ee158d8 | 1128 | queue_work(priv->workqueue, &priv->tx_flush); |
04e1cabe EG |
1129 | } |
1130 | } | |
1131 | ||
48a2d66f | 1132 | int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
247c61d6 | 1133 | struct iwl_device_cmd *cmd) |
74bcdb33 | 1134 | { |
a0eaad71 EG |
1135 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
1136 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1137 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 1138 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
f8d7c1a1 | 1139 | struct iwlagn_tx_resp *tx_resp = (void *)pkt->data; |
a0eaad71 EG |
1140 | struct ieee80211_hdr *hdr; |
1141 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 1142 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
1143 | int tid; |
1144 | int sta_id; | |
1145 | int freed; | |
74bcdb33 | 1146 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
1147 | struct sk_buff_head skbs; |
1148 | struct sk_buff *skb; | |
1149 | struct iwl_rxon_context *ctx; | |
8ad71bef | 1150 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
d0eb6334 | 1151 | |
a0eaad71 EG |
1152 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
1153 | IWLAGN_TX_RES_TID_POS; | |
1154 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
1155 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 1156 | |
2bfb5092 | 1157 | spin_lock_bh(&priv->sta_lock); |
9decde95 | 1158 | |
cfe41828 EG |
1159 | if (is_agg) { |
1160 | WARN_ON_ONCE(sta_id >= IWLAGN_STATION_COUNT || | |
1161 | tid >= IWL_MAX_TID_COUNT); | |
1162 | if (txq_id != priv->tid_data[sta_id][tid].agg.txq_id) | |
1163 | IWL_ERR(priv, "txq_id mismatch: %d %d\n", txq_id, | |
1164 | priv->tid_data[sta_id][tid].agg.txq_id); | |
a0eaad71 | 1165 | iwl_rx_reply_tx_agg(priv, tx_resp); |
cfe41828 | 1166 | } |
a0eaad71 | 1167 | |
2c6ab7ff JB |
1168 | __skb_queue_head_init(&skbs); |
1169 | ||
a0eaad71 | 1170 | if (tx_resp->frame_count == 1) { |
eb9a372a | 1171 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
9a886586 | 1172 | next_reclaimed = IEEE80211_SEQ_TO_SN(next_reclaimed + 0x10); |
eb9a372a EG |
1173 | |
1174 | if (is_agg) { | |
1175 | /* If this is an aggregation queue, we can rely on the | |
1176 | * ssn since the wifi sequence number corresponds to | |
1177 | * the index in the TFD ring (%256). | |
1178 | * The seq_ctl is the sequence control of the packet | |
1179 | * to which this Tx response relates. But if there is a | |
1180 | * hole in the bitmap of the BA we received, this Tx | |
1181 | * response may allow to reclaim the hole and all the | |
1182 | * subsequent packets that were already acked. | |
1183 | * In that case, seq_ctl != ssn, and the next packet | |
1184 | * to be reclaimed will be ssn and not seq_ctl. | |
1185 | */ | |
1186 | next_reclaimed = ssn; | |
1187 | } | |
1188 | ||
ae023b27 EG |
1189 | if (tid != IWL_TID_NON_QOS) { |
1190 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1191 | next_reclaimed; | |
1192 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1193 | next_reclaimed); | |
1194 | } | |
1195 | ||
27edb1ac EG |
1196 | iwl_trans_reclaim(priv->trans, txq_id, ssn, &skbs); |
1197 | ||
20addec6 | 1198 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1199 | freed = 0; |
2c6ab7ff JB |
1200 | |
1201 | /* process frames */ | |
1202 | skb_queue_walk(&skbs, skb) { | |
a0eaad71 EG |
1203 | hdr = (struct ieee80211_hdr *)skb->data; |
1204 | ||
1205 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
1206 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
1207 | ||
1208 | info = IEEE80211_SKB_CB(skb); | |
1209 | ctx = info->driver_data[0]; | |
59c647b6 EG |
1210 | iwl_trans_free_tx_cmd(priv->trans, |
1211 | info->driver_data[1]); | |
a0eaad71 EG |
1212 | |
1213 | memset(&info->status, 0, sizeof(info->status)); | |
1214 | ||
1215 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
b8730b40 | 1216 | ctx->vif && |
a0eaad71 | 1217 | ctx->vif->type == NL80211_IFTYPE_STATION) { |
e755f882 JB |
1218 | /* block and stop all queues */ |
1219 | priv->passive_no_rx = true; | |
3251715d EG |
1220 | IWL_DEBUG_TX_QUEUES(priv, "stop all queues: " |
1221 | "passive channel"); | |
e755f882 | 1222 | ieee80211_stop_queues(priv->hw); |
a0eaad71 EG |
1223 | |
1224 | IWL_DEBUG_TX_REPLY(priv, | |
1225 | "TXQ %d status %s (0x%08x) " | |
1226 | "rate_n_flags 0x%x retries %d\n", | |
1227 | txq_id, | |
1228 | iwl_get_tx_fail_reason(status), | |
1229 | status, | |
1230 | le32_to_cpu(tx_resp->rate_n_flags), | |
1231 | tx_resp->failure_frame); | |
1232 | ||
1233 | IWL_DEBUG_TX_REPLY(priv, | |
1234 | "FrameCnt = %d, idx=%d\n", | |
1235 | tx_resp->frame_count, cmd_index); | |
1236 | } | |
1237 | ||
1238 | /* check if BAR is needed */ | |
1239 | if (is_agg && !iwl_is_tx_success(status)) | |
1240 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1241 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
2eb81a40 | 1242 | tx_resp); |
a0eaad71 EG |
1243 | if (!is_agg) |
1244 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
1245 | ||
a0eaad71 EG |
1246 | freed++; |
1247 | } | |
74bcdb33 | 1248 | |
f590dcec EG |
1249 | if (tid != IWL_TID_NON_QOS) { |
1250 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1251 | next_reclaimed; | |
1252 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1253 | next_reclaimed); | |
1254 | } | |
1255 | ||
1c3fea82 EG |
1256 | if (!is_agg && freed != 1) |
1257 | IWL_ERR(priv, "Q: %d, freed %d\n", txq_id, freed); | |
622a9268 | 1258 | |
cfe41828 EG |
1259 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x)\n", txq_id, |
1260 | iwl_get_tx_fail_reason(status), status); | |
1c3fea82 | 1261 | |
cfe41828 EG |
1262 | IWL_DEBUG_TX_REPLY(priv, |
1263 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d seq_ctl=0x%x\n", | |
1264 | le32_to_cpu(tx_resp->rate_n_flags), | |
1265 | tx_resp->failure_frame, | |
1266 | SEQ_TO_INDEX(sequence), ssn, | |
1267 | le16_to_cpu(tx_resp->seq_ctl)); | |
1268 | } | |
1c3fea82 | 1269 | |
a0eaad71 | 1270 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
2bfb5092 | 1271 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1272 | |
1273 | while (!skb_queue_empty(&skbs)) { | |
1274 | skb = __skb_dequeue(&skbs); | |
2bfb5092 | 1275 | ieee80211_tx_status_ni(priv->hw, skb); |
2c6ab7ff JB |
1276 | } |
1277 | ||
247c61d6 | 1278 | return 0; |
8d801080 WYG |
1279 | } |
1280 | ||
74bcdb33 WYG |
1281 | /** |
1282 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
1283 | * | |
1284 | * Handles block-acknowledge notification from device, which reports success | |
1285 | * of frames sent via aggregation. | |
1286 | */ | |
247c61d6 | 1287 | int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
48a2d66f | 1288 | struct iwl_rx_cmd_buffer *rxb, |
247c61d6 | 1289 | struct iwl_device_cmd *cmd) |
74bcdb33 WYG |
1290 | { |
1291 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
f8d7c1a1 | 1292 | struct iwl_compressed_ba_resp *ba_resp = (void *)pkt->data; |
74bcdb33 | 1293 | struct iwl_ht_agg *agg; |
a0eaad71 EG |
1294 | struct sk_buff_head reclaimed_skbs; |
1295 | struct ieee80211_tx_info *info; | |
1296 | struct ieee80211_hdr *hdr; | |
1297 | struct sk_buff *skb; | |
74bcdb33 WYG |
1298 | int sta_id; |
1299 | int tid; | |
a0eaad71 | 1300 | int freed; |
74bcdb33 WYG |
1301 | |
1302 | /* "flow" corresponds to Tx queue */ | |
1303 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
1304 | ||
1305 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1306 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1307 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
1308 | ||
2152268f | 1309 | if (scd_flow >= priv->cfg->base_params->num_of_queues) { |
74bcdb33 WYG |
1310 | IWL_ERR(priv, |
1311 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
247c61d6 | 1312 | return 0; |
74bcdb33 WYG |
1313 | } |
1314 | ||
74bcdb33 WYG |
1315 | sta_id = ba_resp->sta_id; |
1316 | tid = ba_resp->tid; | |
04cf6824 | 1317 | agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 | 1318 | |
2bfb5092 | 1319 | spin_lock_bh(&priv->sta_lock); |
a0eaad71 | 1320 | |
76bc10fc EG |
1321 | if (unlikely(!agg->wait_for_ba)) { |
1322 | if (unlikely(ba_resp->bitmap)) | |
1323 | IWL_ERR(priv, "Received BA when not expected\n"); | |
2bfb5092 | 1324 | spin_unlock_bh(&priv->sta_lock); |
247c61d6 | 1325 | return 0; |
b561e827 | 1326 | } |
74bcdb33 | 1327 | |
27edb1ac EG |
1328 | if (unlikely(scd_flow != agg->txq_id)) { |
1329 | /* | |
1330 | * FIXME: this is a uCode bug which need to be addressed, | |
1331 | * log the information and return for now. | |
1332 | * Since it is can possibly happen very often and in order | |
1333 | * not to fill the syslog, don't use IWL_ERR or IWL_WARN | |
1334 | */ | |
1335 | IWL_DEBUG_TX_QUEUES(priv, | |
1336 | "Bad queue mapping txq_id=%d, agg_txq[sta:%d,tid:%d]=%d\n", | |
1337 | scd_flow, sta_id, tid, agg->txq_id); | |
2bfb5092 | 1338 | spin_unlock_bh(&priv->sta_lock); |
27edb1ac EG |
1339 | return 0; |
1340 | } | |
1341 | ||
76bc10fc EG |
1342 | __skb_queue_head_init(&reclaimed_skbs); |
1343 | ||
1344 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1345 | * block-ack window (we assume that they've been successfully | |
1346 | * transmitted ... if not, it's too late anyway). */ | |
27edb1ac EG |
1347 | iwl_trans_reclaim(priv->trans, scd_flow, ba_resp_scd_ssn, |
1348 | &reclaimed_skbs); | |
74bcdb33 WYG |
1349 | |
1350 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
1351 | "sta_id = %d\n", | |
1352 | agg->wait_for_ba, | |
1353 | (u8 *) &ba_resp->sta_addr_lo32, | |
1354 | ba_resp->sta_id); | |
a0eaad71 | 1355 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
a46c3e42 | 1356 | "scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", |
aca15f81 | 1357 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1358 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
a46c3e42 EG |
1359 | scd_flow, ba_resp_scd_ssn, ba_resp->txed, |
1360 | ba_resp->txed_2_done); | |
74bcdb33 | 1361 | |
a0eaad71 | 1362 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1363 | agg->wait_for_ba = false; |
a0eaad71 EG |
1364 | |
1365 | /* Sanity check values reported by uCode */ | |
1366 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1367 | IWL_DEBUG_TX_REPLY(priv, | |
1368 | "bogus sent(%d) and ack(%d) count\n", | |
1369 | ba_resp->txed, ba_resp->txed_2_done); | |
1370 | /* | |
1371 | * set txed_2_done = txed, | |
1372 | * so it won't impact rate scale | |
1373 | */ | |
1374 | ba_resp->txed = ba_resp->txed_2_done; | |
1375 | } | |
a0eaad71 | 1376 | |
04cf6824 | 1377 | priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
76bc10fc | 1378 | |
20addec6 | 1379 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1380 | freed = 0; |
74bcdb33 | 1381 | |
2c6ab7ff | 1382 | skb_queue_walk(&reclaimed_skbs, skb) { |
a0eaad71 | 1383 | hdr = (struct ieee80211_hdr *)skb->data; |
69fdb710 | 1384 | |
a0eaad71 EG |
1385 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1386 | freed++; | |
1387 | else | |
1388 | WARN_ON_ONCE(1); | |
1389 | ||
1a849613 | 1390 | info = IEEE80211_SKB_CB(skb); |
59c647b6 | 1391 | iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); |
1a849613 EG |
1392 | |
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)); | |
1398 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1399 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1400 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1401 | info->status.ampdu_len = ba_resp->txed; | |
1402 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1403 | info); | |
1404 | } | |
69fdb710 JB |
1405 | } |
1406 | ||
2bfb5092 | 1407 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1408 | |
1409 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1410 | skb = __skb_dequeue(&reclaimed_skbs); | |
2bfb5092 | 1411 | ieee80211_tx_status_ni(priv->hw, skb); |
2c6ab7ff JB |
1412 | } |
1413 | ||
247c61d6 | 1414 | return 0; |
69fdb710 | 1415 | } |