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 && |
2152268f EG |
86 | priv->cfg->bt_params && |
87 | priv->cfg->bt_params->advanced_bt_coexist && | |
d44ae69e JB |
88 | (ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) || |
89 | ieee80211_is_reassoc_req(fc) || | |
90 | skb->protocol == cpu_to_be16(ETH_P_PAE))) | |
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; | |
5ef15ccc | 165 | #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE |
4e308119 WYG |
166 | if (priv->tm_fixed_rate) { |
167 | /* | |
168 | * rate overwrite by testmode | |
169 | * we not only send lq command to change rate | |
170 | * we also re-enforce per data pkt base. | |
171 | */ | |
172 | tx_cmd->tx_flags &= ~TX_CMD_FLG_STA_RATE_MSK; | |
173 | memcpy(&tx_cmd->rate_n_flags, &priv->tm_fixed_rate, | |
174 | sizeof(tx_cmd->rate_n_flags)); | |
175 | } | |
c10e2c10 | 176 | #endif |
74bcdb33 | 177 | return; |
b8deb492 WYG |
178 | } else if (ieee80211_is_back_req(fc)) |
179 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
74bcdb33 WYG |
180 | |
181 | /** | |
182 | * If the current TX rate stored in mac80211 has the MCS bit set, it's | |
183 | * not really a TX rate. Thus, we use the lowest supported rate for | |
184 | * this band. Also use the lowest supported rate if the stored rate | |
185 | * index is invalid. | |
186 | */ | |
187 | rate_idx = info->control.rates[0].idx; | |
188 | if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || | |
189 | (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) | |
26a7ca9a | 190 | rate_idx = rate_lowest_index( |
b7998c8b | 191 | &priv->nvm_data->bands[info->band], sta); |
74bcdb33 WYG |
192 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ |
193 | if (info->band == IEEE80211_BAND_5GHZ) | |
194 | rate_idx += IWL_FIRST_OFDM_RATE; | |
195 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
196 | rate_plcp = iwl_rates[rate_idx].plcp; | |
197 | /* Zero out flags for this packet */ | |
198 | rate_flags = 0; | |
199 | ||
200 | /* Set CCK flag as needed */ | |
201 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
202 | rate_flags |= RATE_MCS_CCK_MSK; | |
203 | ||
74bcdb33 | 204 | /* Set up antennas */ |
2152268f EG |
205 | if (priv->cfg->bt_params && |
206 | priv->cfg->bt_params->advanced_bt_coexist && | |
7cb1b088 | 207 | priv->bt_full_concurrent) { |
bee008b7 WYG |
208 | /* operated as 1x1 in full concurrency mode */ |
209 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
b7998c8b | 210 | first_antenna(priv->nvm_data->valid_tx_ant)); |
bee008b7 | 211 | } else |
26a7ca9a JB |
212 | priv->mgmt_tx_ant = iwl_toggle_tx_ant( |
213 | priv, priv->mgmt_tx_ant, | |
b7998c8b | 214 | priv->nvm_data->valid_tx_ant); |
74bcdb33 WYG |
215 | rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant); |
216 | ||
217 | /* Set the rate in the TX cmd */ | |
218 | tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags); | |
219 | } | |
220 | ||
221 | static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv *priv, | |
f2b69ef0 JB |
222 | struct ieee80211_tx_info *info, |
223 | struct iwl_tx_cmd *tx_cmd, | |
224 | struct sk_buff *skb_frag) | |
74bcdb33 WYG |
225 | { |
226 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
227 | ||
97359d12 JB |
228 | switch (keyconf->cipher) { |
229 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
230 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
231 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
232 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
233 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
74bcdb33 WYG |
234 | break; |
235 | ||
97359d12 | 236 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 237 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 238 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
239 | break; |
240 | ||
97359d12 JB |
241 | case WLAN_CIPHER_SUITE_WEP104: |
242 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
243 | /* fall through */ | |
244 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
245 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
246 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
247 | ||
74bcdb33 WYG |
248 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
249 | ||
250 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
251 | "with key %d\n", keyconf->keyidx); | |
252 | break; | |
253 | ||
254 | default: | |
97359d12 | 255 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
256 | break; |
257 | } | |
258 | } | |
259 | ||
955570fc JB |
260 | /** |
261 | * iwl_sta_id_or_broadcast - return sta_id or broadcast sta | |
262 | * @context: the current context | |
263 | * @sta: mac80211 station | |
264 | * | |
265 | * In certain circumstances mac80211 passes a station pointer | |
266 | * that may be %NULL, for example during TX or key setup. In | |
267 | * that case, we need to use the broadcast station, so this | |
268 | * inline wraps that pattern. | |
269 | */ | |
270 | static int iwl_sta_id_or_broadcast(struct iwl_rxon_context *context, | |
271 | struct ieee80211_sta *sta) | |
272 | { | |
273 | int sta_id; | |
274 | ||
275 | if (!sta) | |
276 | return context->bcast_sta_id; | |
277 | ||
278 | sta_id = iwl_sta_id(sta); | |
279 | ||
280 | /* | |
281 | * mac80211 should not be passing a partially | |
282 | * initialised station! | |
283 | */ | |
284 | WARN_ON(sta_id == IWL_INVALID_STATION); | |
285 | ||
286 | return sta_id; | |
287 | } | |
288 | ||
74bcdb33 WYG |
289 | /* |
290 | * start REPLY_TX command process | |
291 | */ | |
36323f81 TH |
292 | int iwlagn_tx_skb(struct iwl_priv *priv, |
293 | struct ieee80211_sta *sta, | |
294 | struct sk_buff *skb) | |
74bcdb33 WYG |
295 | { |
296 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
297 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 298 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 299 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
59c647b6 | 300 | struct iwl_device_cmd *dev_cmd; |
47c1b496 | 301 | struct iwl_tx_cmd *tx_cmd; |
74bcdb33 WYG |
302 | __le16 fc; |
303 | u8 hdr_len; | |
34b5321e EG |
304 | u16 len, seq_number = 0; |
305 | u8 sta_id, tid = IWL_MAX_TID_COUNT; | |
c8a8ab44 | 306 | bool is_agg = false, is_data_qos = false; |
9eae88fa | 307 | int txq_id; |
74bcdb33 | 308 | |
c6baf7fb | 309 | if (info->control.vif) |
a194e324 JB |
310 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
311 | ||
83626404 | 312 | if (iwl_is_rfkill(priv)) { |
74bcdb33 | 313 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 314 | goto drop_unlock_priv; |
74bcdb33 WYG |
315 | } |
316 | ||
317 | fc = hdr->frame_control; | |
318 | ||
319 | #ifdef CONFIG_IWLWIFI_DEBUG | |
320 | if (ieee80211_is_auth(fc)) | |
321 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
322 | else if (ieee80211_is_assoc_req(fc)) | |
323 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
324 | else if (ieee80211_is_reassoc_req(fc)) | |
325 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
326 | #endif | |
327 | ||
79d3eef8 JB |
328 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
329 | struct iwl_wipan_noa_data *noa_data = | |
330 | rcu_dereference(priv->noa_data); | |
331 | ||
332 | if (noa_data && | |
333 | pskb_expand_head(skb, 0, noa_data->length, | |
334 | GFP_ATOMIC) == 0) { | |
335 | memcpy(skb_put(skb, noa_data->length), | |
336 | noa_data->data, noa_data->length); | |
337 | hdr = (struct ieee80211_hdr *)skb->data; | |
338 | } | |
339 | } | |
340 | ||
74bcdb33 WYG |
341 | hdr_len = ieee80211_hdrlen(fc); |
342 | ||
bfd36103 SG |
343 | /* For management frames use broadcast id to do not break aggregation */ |
344 | if (!ieee80211_is_data(fc)) | |
345 | sta_id = ctx->bcast_sta_id; | |
346 | else { | |
347 | /* Find index into station table for destination station */ | |
36323f81 | 348 | sta_id = iwl_sta_id_or_broadcast(ctx, sta); |
bfd36103 SG |
349 | if (sta_id == IWL_INVALID_STATION) { |
350 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
351 | hdr->addr1); | |
e00cf3b9 | 352 | goto drop_unlock_priv; |
bfd36103 | 353 | } |
74bcdb33 WYG |
354 | } |
355 | ||
36323f81 TH |
356 | if (sta) |
357 | sta_priv = (void *)sta->drv_priv; | |
74bcdb33 | 358 | |
67158b67 | 359 | if (sta_priv && sta_priv->asleep && |
02f2f1a9 | 360 | (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) { |
74bcdb33 WYG |
361 | /* |
362 | * This sends an asynchronous command to the device, | |
363 | * but we can rely on it being processed before the | |
364 | * next frame is processed -- and the next frame to | |
365 | * this station is the one that will consume this | |
366 | * counter. | |
367 | * For now set the counter to just 1 since we do not | |
368 | * support uAPSD yet. | |
02f2f1a9 JB |
369 | * |
370 | * FIXME: If we get two non-bufferable frames one | |
371 | * after the other, we might only send out one of | |
372 | * them because this is racy. | |
74bcdb33 WYG |
373 | */ |
374 | iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); | |
375 | } | |
376 | ||
59c647b6 | 377 | dev_cmd = iwl_trans_alloc_tx_cmd(priv->trans); |
dfa2bdba EG |
378 | |
379 | if (unlikely(!dev_cmd)) | |
71cb9924 | 380 | goto drop_unlock_priv; |
74bcdb33 | 381 | |
dfa2bdba | 382 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
132f98c2 | 383 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 384 | |
74bcdb33 WYG |
385 | /* Total # bytes to be transmitted */ |
386 | len = (u16)skb->len; | |
387 | tx_cmd->len = cpu_to_le16(len); | |
388 | ||
389 | if (info->control.hw_key) | |
f2b69ef0 | 390 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb); |
74bcdb33 WYG |
391 | |
392 | /* TODO need this for burst mode later on */ | |
d44ae69e | 393 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 | 394 | |
36323f81 | 395 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, sta, fc); |
74bcdb33 | 396 | |
1a849613 EG |
397 | memset(&info->status, 0, sizeof(info->status)); |
398 | ||
2c452297 | 399 | info->driver_data[0] = ctx; |
dfa2bdba | 400 | info->driver_data[1] = dev_cmd; |
11741739 | 401 | /* From now on, we cannot access info->control */ |
2c452297 | 402 | |
fa23cb04 | 403 | spin_lock(&priv->sta_lock); |
71cb9924 | 404 | |
34b5321e EG |
405 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
406 | u8 *qc = NULL; | |
407 | struct iwl_tid_data *tid_data; | |
408 | qc = ieee80211_get_qos_ctl(hdr); | |
409 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
410 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
411 | goto drop_unlock_sta; | |
04cf6824 | 412 | tid_data = &priv->tid_data[sta_id][tid]; |
34b5321e | 413 | |
97756fb1 EG |
414 | /* aggregation is on for this <sta,tid> */ |
415 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
416 | tid_data->agg.state != IWL_AGG_ON) { | |
417 | IWL_ERR(priv, "TX_CTL_AMPDU while not in AGG:" | |
418 | " Tx flags = 0x%08x, agg.state = %d", | |
419 | info->flags, tid_data->agg.state); | |
420 | IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d", | |
421 | sta_id, tid, SEQ_TO_SN(tid_data->seq_number)); | |
422 | goto drop_unlock_sta; | |
423 | } | |
424 | ||
b5326db8 EG |
425 | /* We can receive packets from the stack in IWL_AGG_{ON,OFF} |
426 | * only. Check this here. | |
427 | */ | |
428 | if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON && | |
ebdfb7a1 | 429 | tid_data->agg.state != IWL_AGG_OFF, |
b5326db8 EG |
430 | "Tx while agg.state = %d", tid_data->agg.state)) |
431 | goto drop_unlock_sta; | |
432 | ||
34b5321e EG |
433 | seq_number = tid_data->seq_number; |
434 | seq_number &= IEEE80211_SCTL_SEQ; | |
435 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
436 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
437 | seq_number += 0x10; | |
c8a8ab44 JB |
438 | |
439 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
440 | is_agg = true; | |
441 | is_data_qos = true; | |
34b5321e EG |
442 | } |
443 | ||
444 | /* Copy MAC header from skb into command buffer */ | |
445 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
446 | ||
9eae88fa JB |
447 | if (is_agg) |
448 | txq_id = priv->tid_data[sta_id][tid].agg.txq_id; | |
449 | else if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) { | |
450 | /* | |
451 | * Send this frame after DTIM -- there's a special queue | |
452 | * reserved for this for contexts that support AP mode. | |
453 | */ | |
454 | txq_id = ctx->mcast_queue; | |
455 | ||
456 | /* | |
457 | * The microcode will clear the more data | |
458 | * bit in the last frame it transmits. | |
459 | */ | |
460 | hdr->frame_control |= | |
461 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
462 | } else if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) | |
463 | txq_id = IWL_AUX_QUEUE; | |
464 | else | |
465 | txq_id = ctx->ac_to_queue[skb_get_queue_mapping(skb)]; | |
466 | ||
1479177b JB |
467 | WARN_ON_ONCE(!is_agg && txq_id != info->hw_queue); |
468 | WARN_ON_ONCE(is_agg && | |
469 | priv->queue_to_mac80211[txq_id] != info->hw_queue); | |
470 | ||
1c3fea82 EG |
471 | IWL_DEBUG_TX(priv, "TX to [%d|%d] Q:%d - seq: 0x%x\n", sta_id, tid, |
472 | txq_id, seq_number); | |
473 | ||
68e8dfda | 474 | if (iwl_trans_tx(priv->trans, skb, dev_cmd, txq_id)) |
47c1b496 | 475 | goto drop_unlock_sta; |
2c46f72e | 476 | |
c8a8ab44 | 477 | if (is_data_qos && !ieee80211_has_morefrags(fc)) |
04cf6824 | 478 | priv->tid_data[sta_id][tid].seq_number = seq_number; |
34b5321e | 479 | |
fa23cb04 | 480 | spin_unlock(&priv->sta_lock); |
74bcdb33 | 481 | |
2e34034e JB |
482 | /* |
483 | * Avoid atomic ops if it isn't an associated client. | |
484 | * Also, if this is a packet for aggregation, don't | |
485 | * increase the counter because the ucode will stop | |
486 | * aggregation queues when their respective station | |
487 | * goes to sleep. | |
488 | */ | |
489 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
490 | atomic_inc(&sta_priv->pending_frames); |
491 | ||
622a9268 IP |
492 | if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) |
493 | iwl_scan_offchannel_skb(priv); | |
494 | ||
74bcdb33 WYG |
495 | return 0; |
496 | ||
2c46f72e | 497 | drop_unlock_sta: |
dfa2bdba | 498 | if (dev_cmd) |
59c647b6 | 499 | iwl_trans_free_tx_cmd(priv->trans, dev_cmd); |
fa23cb04 | 500 | spin_unlock(&priv->sta_lock); |
2c46f72e | 501 | drop_unlock_priv: |
74bcdb33 WYG |
502 | return -1; |
503 | } | |
504 | ||
1479177b | 505 | static int iwlagn_alloc_agg_txq(struct iwl_priv *priv, int mq) |
9eae88fa JB |
506 | { |
507 | int q; | |
508 | ||
509 | for (q = IWLAGN_FIRST_AMPDU_QUEUE; | |
2152268f | 510 | q < priv->cfg->base_params->num_of_queues; q++) { |
9eae88fa | 511 | if (!test_and_set_bit(q, priv->agg_q_alloc)) { |
1479177b | 512 | priv->queue_to_mac80211[q] = mq; |
9eae88fa JB |
513 | return q; |
514 | } | |
515 | } | |
516 | ||
517 | return -ENOSPC; | |
518 | } | |
519 | ||
520 | static void iwlagn_dealloc_agg_txq(struct iwl_priv *priv, int q) | |
521 | { | |
522 | clear_bit(q, priv->agg_q_alloc); | |
1479177b | 523 | priv->queue_to_mac80211[q] = IWL_INVALID_MAC80211_QUEUE; |
9eae88fa JB |
524 | } |
525 | ||
bc237730 EG |
526 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
527 | struct ieee80211_sta *sta, u16 tid) | |
528 | { | |
bc237730 | 529 | struct iwl_tid_data *tid_data; |
9eae88fa | 530 | int sta_id, txq_id; |
682e5f64 | 531 | enum iwl_agg_state agg_state; |
bc237730 EG |
532 | |
533 | sta_id = iwl_sta_id(sta); | |
534 | ||
535 | if (sta_id == IWL_INVALID_STATION) { | |
536 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
537 | return -ENXIO; | |
538 | } | |
539 | ||
fa23cb04 | 540 | spin_lock_bh(&priv->sta_lock); |
bc237730 | 541 | |
04cf6824 | 542 | tid_data = &priv->tid_data[sta_id][tid]; |
da58eefa | 543 | txq_id = tid_data->agg.txq_id; |
bc237730 | 544 | |
da58eefa | 545 | switch (tid_data->agg.state) { |
bc237730 EG |
546 | case IWL_EMPTYING_HW_QUEUE_ADDBA: |
547 | /* | |
548 | * This can happen if the peer stops aggregation | |
549 | * again before we've had a chance to drain the | |
550 | * queue we selected previously, i.e. before the | |
551 | * session was really started completely. | |
552 | */ | |
553 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
554 | goto turn_off; | |
682e5f64 EG |
555 | case IWL_AGG_STARTING: |
556 | /* | |
557 | * This can happen when the session is stopped before | |
558 | * we receive ADDBA response | |
559 | */ | |
560 | IWL_DEBUG_HT(priv, "AGG stop before AGG became operational\n"); | |
561 | goto turn_off; | |
bc237730 EG |
562 | case IWL_AGG_ON: |
563 | break; | |
564 | default: | |
da58eefa EG |
565 | IWL_WARN(priv, |
566 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
567 | sta_id, tid, tid_data->agg.state); | |
fa23cb04 | 568 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
569 | return 0; |
570 | } | |
571 | ||
572 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); | |
573 | ||
574 | /* There are still packets for this RA / TID in the HW */ | |
9eae88fa JB |
575 | if (!test_bit(txq_id, priv->agg_q_alloc)) { |
576 | IWL_DEBUG_TX_QUEUES(priv, | |
577 | "stopping AGG on STA/TID %d/%d but hwq %d not used\n", | |
578 | sta_id, tid, txq_id); | |
579 | } else if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
da58eefa EG |
580 | IWL_DEBUG_TX_QUEUES(priv, |
581 | "Can't proceed: ssn %d, next_recl = %d\n", | |
bc237730 EG |
582 | tid_data->agg.ssn, |
583 | tid_data->next_reclaimed); | |
da58eefa | 584 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_DELBA; |
fa23cb04 | 585 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
586 | return 0; |
587 | } | |
588 | ||
0ca24daf | 589 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
bc237730 EG |
590 | tid_data->agg.ssn); |
591 | turn_off: | |
da58eefa EG |
592 | agg_state = tid_data->agg.state; |
593 | tid_data->agg.state = IWL_AGG_OFF; | |
bc237730 | 594 | |
fa23cb04 | 595 | spin_unlock_bh(&priv->sta_lock); |
bc237730 | 596 | |
9eae88fa | 597 | if (test_bit(txq_id, priv->agg_q_alloc)) { |
8ff44ef2 EG |
598 | /* |
599 | * If the transport didn't know that we wanted to start | |
600 | * agreggation, don't tell it that we want to stop them. | |
601 | * This can happen when we don't get the addBA response on | |
602 | * time, or we hadn't time to drain the AC queues. | |
682e5f64 | 603 | */ |
8ff44ef2 | 604 | if (agg_state == IWL_AGG_ON) |
d0624be6 | 605 | iwl_trans_txq_disable(priv->trans, txq_id); |
8ff44ef2 EG |
606 | else |
607 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
608 | agg_state); | |
9eae88fa JB |
609 | iwlagn_dealloc_agg_txq(priv, txq_id); |
610 | } | |
bc237730 | 611 | |
fdf426a3 | 612 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
bc237730 EG |
613 | |
614 | return 0; | |
615 | } | |
616 | ||
832f47e3 | 617 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 618 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 619 | { |
1479177b | 620 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
3c69b595 | 621 | struct iwl_tid_data *tid_data; |
9eae88fa | 622 | int sta_id, txq_id, ret; |
74bcdb33 | 623 | |
5bc9890f WYG |
624 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
625 | sta->addr, tid); | |
74bcdb33 | 626 | |
619753ff | 627 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
628 | if (sta_id == IWL_INVALID_STATION) { |
629 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
630 | return -ENXIO; | |
631 | } | |
5f85a789 | 632 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
633 | return -EINVAL; |
634 | ||
04cf6824 | 635 | if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
636 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
637 | return -ENXIO; | |
638 | } | |
639 | ||
1479177b | 640 | txq_id = iwlagn_alloc_agg_txq(priv, ctx->ac_to_queue[tid_to_ac[tid]]); |
9eae88fa JB |
641 | if (txq_id < 0) { |
642 | IWL_DEBUG_TX_QUEUES(priv, | |
643 | "No free aggregation queue for %pM/%d\n", | |
644 | sta->addr, tid); | |
645 | return txq_id; | |
646 | } | |
647 | ||
288712a6 | 648 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
649 | if (ret) |
650 | return ret; | |
651 | ||
fa23cb04 | 652 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 653 | tid_data = &priv->tid_data[sta_id][tid]; |
3c69b595 | 654 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); |
9eae88fa | 655 | tid_data->agg.txq_id = txq_id; |
3c69b595 EG |
656 | |
657 | *ssn = tid_data->agg.ssn; | |
658 | ||
3c69b595 | 659 | if (*ssn == tid_data->next_reclaimed) { |
0ca24daf | 660 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
3c69b595 | 661 | tid_data->agg.ssn); |
682e5f64 | 662 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 663 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
3c69b595 EG |
664 | } else { |
665 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
0ca24daf | 666 | "next_reclaimed = %d\n", |
3c69b595 EG |
667 | tid_data->agg.ssn, |
668 | tid_data->next_reclaimed); | |
669 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
670 | } | |
fa23cb04 | 671 | spin_unlock_bh(&priv->sta_lock); |
288712a6 | 672 | |
74bcdb33 WYG |
673 | return ret; |
674 | } | |
675 | ||
822e8b2a EG |
676 | int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, |
677 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
678 | { | |
679 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; | |
680 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
9eae88fa | 681 | int q, fifo; |
822e8b2a EG |
682 | u16 ssn; |
683 | ||
684 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
685 | ||
fa23cb04 | 686 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 687 | ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; |
9eae88fa | 688 | q = priv->tid_data[sta_priv->sta_id][tid].agg.txq_id; |
682e5f64 | 689 | priv->tid_data[sta_priv->sta_id][tid].agg.state = IWL_AGG_ON; |
fa23cb04 | 690 | spin_unlock_bh(&priv->sta_lock); |
822e8b2a | 691 | |
9eae88fa JB |
692 | fifo = ctx->ac_to_fifo[tid_to_ac[tid]]; |
693 | ||
4beaf6c2 EG |
694 | iwl_trans_txq_enable(priv->trans, q, fifo, sta_priv->sta_id, tid, |
695 | buf_size, ssn); | |
822e8b2a EG |
696 | |
697 | /* | |
698 | * If the limit is 0, then it wasn't initialised yet, | |
699 | * use the default. We can do that since we take the | |
700 | * minimum below, and we don't want to go above our | |
701 | * default due to hardware restrictions. | |
702 | */ | |
703 | if (sta_priv->max_agg_bufsize == 0) | |
704 | sta_priv->max_agg_bufsize = | |
705 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
706 | ||
707 | /* | |
708 | * Even though in theory the peer could have different | |
709 | * aggregation reorder buffer sizes for different sessions, | |
710 | * our ucode doesn't allow for that and has a global limit | |
711 | * for each station. Therefore, use the minimum of all the | |
712 | * aggregation sessions and our default value. | |
713 | */ | |
714 | sta_priv->max_agg_bufsize = | |
715 | min(sta_priv->max_agg_bufsize, buf_size); | |
716 | ||
9e295116 | 717 | if (priv->hw_params.use_rts_for_aggregation) { |
822e8b2a EG |
718 | /* |
719 | * switch to RTS/CTS if it is the prefer protection | |
720 | * method for HT traffic | |
721 | */ | |
722 | ||
723 | sta_priv->lq_sta.lq.general_params.flags |= | |
724 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; | |
725 | } | |
726 | priv->agg_tids_count++; | |
727 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", | |
728 | priv->agg_tids_count); | |
729 | ||
730 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = | |
731 | sta_priv->max_agg_bufsize; | |
732 | ||
5fb8c182 | 733 | IWL_DEBUG_HT(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
822e8b2a EG |
734 | sta->addr, tid); |
735 | ||
736 | return iwl_send_lq_cmd(priv, ctx, | |
737 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); | |
738 | } | |
739 | ||
20addec6 EG |
740 | static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid) |
741 | { | |
04cf6824 | 742 | struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid]; |
fdf426a3 EG |
743 | enum iwl_rxon_context_id ctx; |
744 | struct ieee80211_vif *vif; | |
745 | u8 *addr; | |
20addec6 | 746 | |
fa23cb04 | 747 | lockdep_assert_held(&priv->sta_lock); |
20addec6 | 748 | |
fdf426a3 EG |
749 | addr = priv->stations[sta_id].sta.sta.addr; |
750 | ctx = priv->stations[sta_id].ctxid; | |
751 | vif = priv->contexts[ctx].vif; | |
752 | ||
04cf6824 | 753 | switch (priv->tid_data[sta_id][tid].agg.state) { |
20addec6 EG |
754 | case IWL_EMPTYING_HW_QUEUE_DELBA: |
755 | /* There are no packets for this RA / TID in the HW any more */ | |
756 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
757 | IWL_DEBUG_TX_QUEUES(priv, | |
758 | "Can continue DELBA flow ssn = next_recl =" | |
759 | " %d", tid_data->next_reclaimed); | |
d0624be6 EG |
760 | iwl_trans_txq_disable(priv->trans, |
761 | tid_data->agg.txq_id); | |
9eae88fa | 762 | iwlagn_dealloc_agg_txq(priv, tid_data->agg.txq_id); |
20addec6 | 763 | tid_data->agg.state = IWL_AGG_OFF; |
fdf426a3 | 764 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
765 | } |
766 | break; | |
767 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
768 | /* There are no packets for this RA / TID in the HW any more */ | |
769 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
770 | IWL_DEBUG_TX_QUEUES(priv, | |
771 | "Can continue ADDBA flow ssn = next_recl =" | |
772 | " %d", tid_data->next_reclaimed); | |
682e5f64 | 773 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 774 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
775 | } |
776 | break; | |
777 | default: | |
778 | break; | |
779 | } | |
780 | } | |
781 | ||
2e34034e JB |
782 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
783 | struct iwl_rxon_context *ctx, | |
784 | const u8 *addr1) | |
74bcdb33 | 785 | { |
74bcdb33 WYG |
786 | struct ieee80211_sta *sta; |
787 | struct iwl_station_priv *sta_priv; | |
788 | ||
6db6340c | 789 | rcu_read_lock(); |
2e34034e | 790 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
791 | if (sta) { |
792 | sta_priv = (void *)sta->drv_priv; | |
793 | /* avoid atomic ops if this isn't a client */ | |
794 | if (sta_priv->client && | |
795 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
796 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
797 | } | |
6db6340c | 798 | rcu_read_unlock(); |
2e34034e JB |
799 | } |
800 | ||
a0eaad71 EG |
801 | /** |
802 | * translate ucode response to mac80211 tx status control values | |
803 | */ | |
04e1cabe | 804 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 805 | struct ieee80211_tx_info *info) |
2e34034e | 806 | { |
d748b464 | 807 | struct ieee80211_tx_rate *r = &info->status.rates[0]; |
74bcdb33 | 808 | |
d748b464 | 809 | info->status.antenna = |
a0eaad71 EG |
810 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); |
811 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
812 | r->flags |= IEEE80211_TX_RC_MCS; | |
813 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
814 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
815 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
816 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
817 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
818 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
819 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
820 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
821 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
822 | } |
823 | ||
a0eaad71 EG |
824 | #ifdef CONFIG_IWLWIFI_DEBUG |
825 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 826 | { |
a0eaad71 EG |
827 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
828 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 829 | |
a0eaad71 EG |
830 | switch (status & TX_STATUS_MSK) { |
831 | case TX_STATUS_SUCCESS: | |
832 | return "SUCCESS"; | |
833 | TX_STATUS_POSTPONE(DELAY); | |
834 | TX_STATUS_POSTPONE(FEW_BYTES); | |
835 | TX_STATUS_POSTPONE(BT_PRIO); | |
836 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
837 | TX_STATUS_POSTPONE(CALC_TTAK); | |
838 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
839 | TX_STATUS_FAIL(SHORT_LIMIT); | |
840 | TX_STATUS_FAIL(LONG_LIMIT); | |
841 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
842 | TX_STATUS_FAIL(DRAIN_FLOW); | |
843 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
844 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
845 | TX_STATUS_FAIL(DEST_PS); | |
846 | TX_STATUS_FAIL(HOST_ABORTED); | |
847 | TX_STATUS_FAIL(BT_RETRY); | |
848 | TX_STATUS_FAIL(STA_INVALID); | |
849 | TX_STATUS_FAIL(FRAG_DROPPED); | |
850 | TX_STATUS_FAIL(TID_DISABLE); | |
851 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
852 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
853 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
854 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
855 | } |
856 | ||
a0eaad71 | 857 | return "UNKNOWN"; |
74bcdb33 | 858 | |
a0eaad71 EG |
859 | #undef TX_STATUS_FAIL |
860 | #undef TX_STATUS_POSTPONE | |
861 | } | |
862 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 863 | |
04e1cabe EG |
864 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
865 | { | |
866 | status &= AGG_TX_STATUS_MSK; | |
867 | ||
868 | switch (status) { | |
869 | case AGG_TX_STATE_UNDERRUN_MSK: | |
870 | priv->reply_agg_tx_stats.underrun++; | |
871 | break; | |
872 | case AGG_TX_STATE_BT_PRIO_MSK: | |
873 | priv->reply_agg_tx_stats.bt_prio++; | |
874 | break; | |
875 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
876 | priv->reply_agg_tx_stats.few_bytes++; | |
877 | break; | |
878 | case AGG_TX_STATE_ABORT_MSK: | |
879 | priv->reply_agg_tx_stats.abort++; | |
880 | break; | |
881 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
882 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
883 | break; | |
884 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
885 | priv->reply_agg_tx_stats.last_sent_try++; | |
886 | break; | |
887 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
888 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
889 | break; | |
890 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
891 | priv->reply_agg_tx_stats.scd_query++; | |
892 | break; | |
893 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
894 | priv->reply_agg_tx_stats.bad_crc32++; | |
895 | break; | |
896 | case AGG_TX_STATE_RESPONSE_MSK: | |
897 | priv->reply_agg_tx_stats.response++; | |
898 | break; | |
899 | case AGG_TX_STATE_DUMP_TX_MSK: | |
900 | priv->reply_agg_tx_stats.dump_tx++; | |
901 | break; | |
902 | case AGG_TX_STATE_DELAY_TX_MSK: | |
903 | priv->reply_agg_tx_stats.delay_tx++; | |
904 | break; | |
905 | default: | |
906 | priv->reply_agg_tx_stats.unknown++; | |
907 | break; | |
908 | } | |
909 | } | |
910 | ||
cfe41828 EG |
911 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
912 | { | |
913 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
914 | tx_resp->frame_count) & MAX_SN; | |
915 | } | |
916 | ||
a0eaad71 EG |
917 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
918 | struct iwlagn_tx_resp *tx_resp) | |
919 | { | |
920 | struct agg_tx_status *frame_status = &tx_resp->status; | |
921 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
922 | IWLAGN_TX_RES_TID_POS; | |
923 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
924 | IWLAGN_TX_RES_RA_POS; | |
04cf6824 | 925 | struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
926 | u32 status = le16_to_cpu(tx_resp->status.status); |
927 | int i; | |
928 | ||
3d29dd9b EG |
929 | WARN_ON(tid == IWL_TID_NON_QOS); |
930 | ||
a0eaad71 EG |
931 | if (agg->wait_for_ba) |
932 | IWL_DEBUG_TX_REPLY(priv, | |
933 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 934 | |
a0eaad71 EG |
935 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
936 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
937 | ||
938 | /* | |
939 | * If the BT kill count is non-zero, we'll get this | |
940 | * notification again. | |
941 | */ | |
942 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
2152268f EG |
943 | priv->cfg->bt_params && |
944 | priv->cfg->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
945 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
946 | } | |
b2502698 | 947 | |
1a849613 EG |
948 | if (tx_resp->frame_count == 1) |
949 | return; | |
950 | ||
cfe41828 EG |
951 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d initial_rate 0x%x ssn %d frm_cnt %d\n", |
952 | agg->txq_id, | |
953 | le32_to_cpu(tx_resp->rate_n_flags), | |
954 | iwlagn_get_scd_ssn(tx_resp), tx_resp->frame_count); | |
955 | ||
a0eaad71 EG |
956 | /* Construct bit-map of pending frames within Tx window */ |
957 | for (i = 0; i < tx_resp->frame_count; i++) { | |
958 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
cfe41828 | 959 | u8 retry_cnt = (fstatus & AGG_TX_TRY_MSK) >> AGG_TX_TRY_POS; |
74bcdb33 | 960 | |
a0eaad71 EG |
961 | if (status & AGG_TX_STATUS_MSK) |
962 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 963 | |
a0eaad71 EG |
964 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
965 | AGG_TX_STATE_ABORT_MSK)) | |
966 | continue; | |
cfe41828 EG |
967 | |
968 | if (status & AGG_TX_STATUS_MSK || retry_cnt > 1) | |
969 | IWL_DEBUG_TX_REPLY(priv, | |
970 | "%d: status %s (0x%04x), try-count (0x%01x)\n", | |
971 | i, | |
972 | iwl_get_agg_tx_fail_reason(fstatus), | |
973 | fstatus & AGG_TX_STATUS_MSK, | |
974 | retry_cnt); | |
74bcdb33 | 975 | } |
74bcdb33 WYG |
976 | } |
977 | ||
04e1cabe EG |
978 | #ifdef CONFIG_IWLWIFI_DEBUG |
979 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
980 | ||
981 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
982 | { | |
983 | status &= AGG_TX_STATUS_MSK; | |
984 | switch (status) { | |
985 | case AGG_TX_STATE_TRANSMITTED: | |
986 | return "SUCCESS"; | |
987 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
988 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
989 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
990 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
991 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
992 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
993 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
994 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
995 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
996 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
997 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
998 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
999 | } | |
1000 | ||
1001 | return "UNKNOWN"; | |
1002 | } | |
1003 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1004 | ||
04e1cabe EG |
1005 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
1006 | { | |
1007 | status &= TX_STATUS_MSK; | |
1008 | ||
1009 | switch (status) { | |
1010 | case TX_STATUS_POSTPONE_DELAY: | |
1011 | priv->reply_tx_stats.pp_delay++; | |
1012 | break; | |
1013 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
1014 | priv->reply_tx_stats.pp_few_bytes++; | |
1015 | break; | |
1016 | case TX_STATUS_POSTPONE_BT_PRIO: | |
1017 | priv->reply_tx_stats.pp_bt_prio++; | |
1018 | break; | |
1019 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
1020 | priv->reply_tx_stats.pp_quiet_period++; | |
1021 | break; | |
1022 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
1023 | priv->reply_tx_stats.pp_calc_ttak++; | |
1024 | break; | |
1025 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
1026 | priv->reply_tx_stats.int_crossed_retry++; | |
1027 | break; | |
1028 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
1029 | priv->reply_tx_stats.short_limit++; | |
1030 | break; | |
1031 | case TX_STATUS_FAIL_LONG_LIMIT: | |
1032 | priv->reply_tx_stats.long_limit++; | |
1033 | break; | |
1034 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
1035 | priv->reply_tx_stats.fifo_underrun++; | |
1036 | break; | |
1037 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
1038 | priv->reply_tx_stats.drain_flow++; | |
1039 | break; | |
1040 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
1041 | priv->reply_tx_stats.rfkill_flush++; | |
1042 | break; | |
1043 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
1044 | priv->reply_tx_stats.life_expire++; | |
1045 | break; | |
1046 | case TX_STATUS_FAIL_DEST_PS: | |
1047 | priv->reply_tx_stats.dest_ps++; | |
1048 | break; | |
1049 | case TX_STATUS_FAIL_HOST_ABORTED: | |
1050 | priv->reply_tx_stats.host_abort++; | |
1051 | break; | |
1052 | case TX_STATUS_FAIL_BT_RETRY: | |
1053 | priv->reply_tx_stats.bt_retry++; | |
1054 | break; | |
1055 | case TX_STATUS_FAIL_STA_INVALID: | |
1056 | priv->reply_tx_stats.sta_invalid++; | |
1057 | break; | |
1058 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
1059 | priv->reply_tx_stats.frag_drop++; | |
1060 | break; | |
1061 | case TX_STATUS_FAIL_TID_DISABLE: | |
1062 | priv->reply_tx_stats.tid_disable++; | |
1063 | break; | |
1064 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
1065 | priv->reply_tx_stats.fifo_flush++; | |
1066 | break; | |
1067 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
1068 | priv->reply_tx_stats.insuff_cf_poll++; | |
1069 | break; | |
1070 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
1071 | priv->reply_tx_stats.fail_hw_drop++; | |
1072 | break; | |
1073 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
1074 | priv->reply_tx_stats.sta_color_mismatch++; | |
1075 | break; | |
1076 | default: | |
1077 | priv->reply_tx_stats.unknown++; | |
1078 | break; | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
1083 | struct ieee80211_tx_info *info, | |
2eb81a40 | 1084 | struct iwlagn_tx_resp *tx_resp) |
04e1cabe | 1085 | { |
2eb81a40 | 1086 | u16 status = le16_to_cpu(tx_resp->status.status); |
04e1cabe | 1087 | |
c3e5d718 EG |
1088 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
1089 | ||
04e1cabe | 1090 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
04e1cabe EG |
1091 | info->flags |= iwl_tx_status_to_mac80211(status); |
1092 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
1093 | info); | |
1094 | if (!iwl_is_tx_success(status)) | |
1095 | iwlagn_count_tx_err_status(priv, status); | |
1096 | } | |
1097 | ||
1098 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
1099 | u8 frame_count, u32 status) | |
1100 | { | |
1101 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
1102 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
83626404 | 1103 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
1ee158d8 | 1104 | queue_work(priv->workqueue, &priv->tx_flush); |
04e1cabe EG |
1105 | } |
1106 | } | |
1107 | ||
48a2d66f | 1108 | int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
247c61d6 | 1109 | struct iwl_device_cmd *cmd) |
74bcdb33 | 1110 | { |
a0eaad71 EG |
1111 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
1112 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1113 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 1114 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
f8d7c1a1 | 1115 | struct iwlagn_tx_resp *tx_resp = (void *)pkt->data; |
a0eaad71 EG |
1116 | struct ieee80211_hdr *hdr; |
1117 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 1118 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
1119 | int tid; |
1120 | int sta_id; | |
1121 | int freed; | |
74bcdb33 | 1122 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
1123 | struct sk_buff_head skbs; |
1124 | struct sk_buff *skb; | |
1125 | struct iwl_rxon_context *ctx; | |
8ad71bef | 1126 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
622a9268 | 1127 | bool is_offchannel_skb; |
d0eb6334 | 1128 | |
a0eaad71 EG |
1129 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
1130 | IWLAGN_TX_RES_TID_POS; | |
1131 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
1132 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 1133 | |
2bfb5092 | 1134 | spin_lock_bh(&priv->sta_lock); |
9decde95 | 1135 | |
cfe41828 EG |
1136 | if (is_agg) { |
1137 | WARN_ON_ONCE(sta_id >= IWLAGN_STATION_COUNT || | |
1138 | tid >= IWL_MAX_TID_COUNT); | |
1139 | if (txq_id != priv->tid_data[sta_id][tid].agg.txq_id) | |
1140 | IWL_ERR(priv, "txq_id mismatch: %d %d\n", txq_id, | |
1141 | priv->tid_data[sta_id][tid].agg.txq_id); | |
a0eaad71 | 1142 | iwl_rx_reply_tx_agg(priv, tx_resp); |
cfe41828 | 1143 | } |
a0eaad71 | 1144 | |
2c6ab7ff JB |
1145 | __skb_queue_head_init(&skbs); |
1146 | ||
622a9268 IP |
1147 | is_offchannel_skb = false; |
1148 | ||
a0eaad71 | 1149 | if (tx_resp->frame_count == 1) { |
eb9a372a EG |
1150 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
1151 | next_reclaimed = SEQ_TO_SN(next_reclaimed + 0x10); | |
1152 | ||
1153 | if (is_agg) { | |
1154 | /* If this is an aggregation queue, we can rely on the | |
1155 | * ssn since the wifi sequence number corresponds to | |
1156 | * the index in the TFD ring (%256). | |
1157 | * The seq_ctl is the sequence control of the packet | |
1158 | * to which this Tx response relates. But if there is a | |
1159 | * hole in the bitmap of the BA we received, this Tx | |
1160 | * response may allow to reclaim the hole and all the | |
1161 | * subsequent packets that were already acked. | |
1162 | * In that case, seq_ctl != ssn, and the next packet | |
1163 | * to be reclaimed will be ssn and not seq_ctl. | |
1164 | */ | |
1165 | next_reclaimed = ssn; | |
1166 | } | |
1167 | ||
ae023b27 EG |
1168 | if (tid != IWL_TID_NON_QOS) { |
1169 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1170 | next_reclaimed; | |
1171 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1172 | next_reclaimed); | |
1173 | } | |
1174 | ||
27edb1ac EG |
1175 | iwl_trans_reclaim(priv->trans, txq_id, ssn, &skbs); |
1176 | ||
20addec6 | 1177 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1178 | freed = 0; |
2c6ab7ff JB |
1179 | |
1180 | /* process frames */ | |
1181 | skb_queue_walk(&skbs, skb) { | |
a0eaad71 EG |
1182 | hdr = (struct ieee80211_hdr *)skb->data; |
1183 | ||
1184 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
1185 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
1186 | ||
1187 | info = IEEE80211_SKB_CB(skb); | |
1188 | ctx = info->driver_data[0]; | |
59c647b6 EG |
1189 | iwl_trans_free_tx_cmd(priv->trans, |
1190 | info->driver_data[1]); | |
a0eaad71 EG |
1191 | |
1192 | memset(&info->status, 0, sizeof(info->status)); | |
1193 | ||
1194 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
1195 | iwl_is_associated_ctx(ctx) && ctx->vif && | |
1196 | ctx->vif->type == NL80211_IFTYPE_STATION) { | |
e755f882 JB |
1197 | /* block and stop all queues */ |
1198 | priv->passive_no_rx = true; | |
3251715d EG |
1199 | IWL_DEBUG_TX_QUEUES(priv, "stop all queues: " |
1200 | "passive channel"); | |
e755f882 | 1201 | ieee80211_stop_queues(priv->hw); |
a0eaad71 EG |
1202 | |
1203 | IWL_DEBUG_TX_REPLY(priv, | |
1204 | "TXQ %d status %s (0x%08x) " | |
1205 | "rate_n_flags 0x%x retries %d\n", | |
1206 | txq_id, | |
1207 | iwl_get_tx_fail_reason(status), | |
1208 | status, | |
1209 | le32_to_cpu(tx_resp->rate_n_flags), | |
1210 | tx_resp->failure_frame); | |
1211 | ||
1212 | IWL_DEBUG_TX_REPLY(priv, | |
1213 | "FrameCnt = %d, idx=%d\n", | |
1214 | tx_resp->frame_count, cmd_index); | |
1215 | } | |
1216 | ||
1217 | /* check if BAR is needed */ | |
1218 | if (is_agg && !iwl_is_tx_success(status)) | |
1219 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1220 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
2eb81a40 | 1221 | tx_resp); |
a0eaad71 EG |
1222 | if (!is_agg) |
1223 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
1224 | ||
622a9268 IP |
1225 | is_offchannel_skb = |
1226 | (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN); | |
a0eaad71 EG |
1227 | freed++; |
1228 | } | |
74bcdb33 | 1229 | |
f590dcec EG |
1230 | if (tid != IWL_TID_NON_QOS) { |
1231 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1232 | next_reclaimed; | |
1233 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1234 | next_reclaimed); | |
1235 | } | |
1236 | ||
1c3fea82 EG |
1237 | if (!is_agg && freed != 1) |
1238 | IWL_ERR(priv, "Q: %d, freed %d\n", txq_id, freed); | |
622a9268 IP |
1239 | |
1240 | /* | |
1241 | * An offchannel frame can be send only on the AUX queue, where | |
1242 | * there is no aggregation (and reordering) so it only is single | |
1243 | * skb is expected to be processed. | |
1244 | */ | |
1c3fea82 EG |
1245 | if (is_offchannel_skb && freed != 1) |
1246 | IWL_ERR(priv, "OFFCHANNEL SKB freed %d\n", freed); | |
8d801080 | 1247 | |
cfe41828 EG |
1248 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x)\n", txq_id, |
1249 | iwl_get_tx_fail_reason(status), status); | |
1c3fea82 | 1250 | |
cfe41828 EG |
1251 | IWL_DEBUG_TX_REPLY(priv, |
1252 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d seq_ctl=0x%x\n", | |
1253 | le32_to_cpu(tx_resp->rate_n_flags), | |
1254 | tx_resp->failure_frame, | |
1255 | SEQ_TO_INDEX(sequence), ssn, | |
1256 | le16_to_cpu(tx_resp->seq_ctl)); | |
1257 | } | |
1c3fea82 | 1258 | |
a0eaad71 | 1259 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
2bfb5092 | 1260 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1261 | |
1262 | while (!skb_queue_empty(&skbs)) { | |
1263 | skb = __skb_dequeue(&skbs); | |
2bfb5092 | 1264 | ieee80211_tx_status_ni(priv->hw, skb); |
2c6ab7ff JB |
1265 | } |
1266 | ||
622a9268 IP |
1267 | if (is_offchannel_skb) |
1268 | iwl_scan_offchannel_skb_status(priv); | |
1269 | ||
247c61d6 | 1270 | return 0; |
8d801080 WYG |
1271 | } |
1272 | ||
74bcdb33 WYG |
1273 | /** |
1274 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
1275 | * | |
1276 | * Handles block-acknowledge notification from device, which reports success | |
1277 | * of frames sent via aggregation. | |
1278 | */ | |
247c61d6 | 1279 | int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
48a2d66f | 1280 | struct iwl_rx_cmd_buffer *rxb, |
247c61d6 | 1281 | struct iwl_device_cmd *cmd) |
74bcdb33 WYG |
1282 | { |
1283 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
f8d7c1a1 | 1284 | struct iwl_compressed_ba_resp *ba_resp = (void *)pkt->data; |
74bcdb33 | 1285 | struct iwl_ht_agg *agg; |
a0eaad71 EG |
1286 | struct sk_buff_head reclaimed_skbs; |
1287 | struct ieee80211_tx_info *info; | |
1288 | struct ieee80211_hdr *hdr; | |
1289 | struct sk_buff *skb; | |
74bcdb33 WYG |
1290 | int sta_id; |
1291 | int tid; | |
a0eaad71 | 1292 | int freed; |
74bcdb33 WYG |
1293 | |
1294 | /* "flow" corresponds to Tx queue */ | |
1295 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
1296 | ||
1297 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1298 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1299 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
1300 | ||
2152268f | 1301 | if (scd_flow >= priv->cfg->base_params->num_of_queues) { |
74bcdb33 WYG |
1302 | IWL_ERR(priv, |
1303 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
247c61d6 | 1304 | return 0; |
74bcdb33 WYG |
1305 | } |
1306 | ||
74bcdb33 WYG |
1307 | sta_id = ba_resp->sta_id; |
1308 | tid = ba_resp->tid; | |
04cf6824 | 1309 | agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 | 1310 | |
2bfb5092 | 1311 | spin_lock_bh(&priv->sta_lock); |
a0eaad71 | 1312 | |
76bc10fc EG |
1313 | if (unlikely(!agg->wait_for_ba)) { |
1314 | if (unlikely(ba_resp->bitmap)) | |
1315 | IWL_ERR(priv, "Received BA when not expected\n"); | |
2bfb5092 | 1316 | spin_unlock_bh(&priv->sta_lock); |
247c61d6 | 1317 | return 0; |
b561e827 | 1318 | } |
74bcdb33 | 1319 | |
27edb1ac EG |
1320 | if (unlikely(scd_flow != agg->txq_id)) { |
1321 | /* | |
1322 | * FIXME: this is a uCode bug which need to be addressed, | |
1323 | * log the information and return for now. | |
1324 | * Since it is can possibly happen very often and in order | |
1325 | * not to fill the syslog, don't use IWL_ERR or IWL_WARN | |
1326 | */ | |
1327 | IWL_DEBUG_TX_QUEUES(priv, | |
1328 | "Bad queue mapping txq_id=%d, agg_txq[sta:%d,tid:%d]=%d\n", | |
1329 | scd_flow, sta_id, tid, agg->txq_id); | |
2bfb5092 | 1330 | spin_unlock_bh(&priv->sta_lock); |
27edb1ac EG |
1331 | return 0; |
1332 | } | |
1333 | ||
76bc10fc EG |
1334 | __skb_queue_head_init(&reclaimed_skbs); |
1335 | ||
1336 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1337 | * block-ack window (we assume that they've been successfully | |
1338 | * transmitted ... if not, it's too late anyway). */ | |
27edb1ac EG |
1339 | iwl_trans_reclaim(priv->trans, scd_flow, ba_resp_scd_ssn, |
1340 | &reclaimed_skbs); | |
74bcdb33 WYG |
1341 | |
1342 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
1343 | "sta_id = %d\n", | |
1344 | agg->wait_for_ba, | |
1345 | (u8 *) &ba_resp->sta_addr_lo32, | |
1346 | ba_resp->sta_id); | |
a0eaad71 | 1347 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
a46c3e42 | 1348 | "scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", |
aca15f81 | 1349 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1350 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
a46c3e42 EG |
1351 | scd_flow, ba_resp_scd_ssn, ba_resp->txed, |
1352 | ba_resp->txed_2_done); | |
74bcdb33 | 1353 | |
a0eaad71 | 1354 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1355 | agg->wait_for_ba = false; |
a0eaad71 EG |
1356 | |
1357 | /* Sanity check values reported by uCode */ | |
1358 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1359 | IWL_DEBUG_TX_REPLY(priv, | |
1360 | "bogus sent(%d) and ack(%d) count\n", | |
1361 | ba_resp->txed, ba_resp->txed_2_done); | |
1362 | /* | |
1363 | * set txed_2_done = txed, | |
1364 | * so it won't impact rate scale | |
1365 | */ | |
1366 | ba_resp->txed = ba_resp->txed_2_done; | |
1367 | } | |
a0eaad71 | 1368 | |
04cf6824 | 1369 | priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
76bc10fc | 1370 | |
20addec6 | 1371 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1372 | freed = 0; |
74bcdb33 | 1373 | |
2c6ab7ff | 1374 | skb_queue_walk(&reclaimed_skbs, skb) { |
a0eaad71 | 1375 | hdr = (struct ieee80211_hdr *)skb->data; |
69fdb710 | 1376 | |
a0eaad71 EG |
1377 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1378 | freed++; | |
1379 | else | |
1380 | WARN_ON_ONCE(1); | |
1381 | ||
1a849613 | 1382 | info = IEEE80211_SKB_CB(skb); |
59c647b6 | 1383 | iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); |
1a849613 EG |
1384 | |
1385 | if (freed == 1) { | |
a0eaad71 EG |
1386 | /* this is the first skb we deliver in this batch */ |
1387 | /* put the rate scaling data there */ | |
1388 | info = IEEE80211_SKB_CB(skb); | |
1389 | memset(&info->status, 0, sizeof(info->status)); | |
1390 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1391 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1392 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1393 | info->status.ampdu_len = ba_resp->txed; | |
1394 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1395 | info); | |
1396 | } | |
69fdb710 JB |
1397 | } |
1398 | ||
2bfb5092 | 1399 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1400 | |
1401 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1402 | skb = __skb_dequeue(&reclaimed_skbs); | |
2bfb5092 | 1403 | ieee80211_tx_status_ni(priv->hw, skb); |
2c6ab7ff JB |
1404 | } |
1405 | ||
247c61d6 | 1406 | return 0; |
69fdb710 | 1407 | } |