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2a2786ed | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b305a080 | 2 | /****************************************************************************** |
b305a080 | 3 | * |
51368bf7 | 4 | * Copyright(c) 2008 - 2014 Intel Corporation. All rights reserved. |
79b6c8fe | 5 | * Copyright (C) 2019 Intel Corporation |
b305a080 | 6 | * |
b305a080 | 7 | * Contact Information: |
cb2f8277 | 8 | * Intel Linux Wireless <linuxwifi@intel.com> |
b305a080 WYG |
9 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
10 | * | |
11 | *****************************************************************************/ | |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/module.h> | |
b305a080 | 15 | #include <linux/sched.h> |
a0eaad71 | 16 | #include <linux/ieee80211.h> |
b305a080 | 17 | #include "iwl-io.h" |
47c1b496 | 18 | #include "iwl-trans.h" |
1023fdc4 JB |
19 | #include "iwl-agn-hw.h" |
20 | #include "dev.h" | |
21 | #include "agn.h" | |
b305a080 | 22 | |
9eae88fa JB |
23 | static const u8 tid_to_ac[] = { |
24 | IEEE80211_AC_BE, | |
25 | IEEE80211_AC_BK, | |
26 | IEEE80211_AC_BK, | |
27 | IEEE80211_AC_BE, | |
28 | IEEE80211_AC_VI, | |
29 | IEEE80211_AC_VI, | |
30 | IEEE80211_AC_VO, | |
31 | IEEE80211_AC_VO, | |
32 | }; | |
33 | ||
5c3d29fc DF |
34 | static void iwlagn_tx_cmd_protection(struct iwl_priv *priv, |
35 | struct ieee80211_tx_info *info, | |
36 | __le16 fc, __le32 *tx_flags) | |
37 | { | |
38 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS || | |
39 | info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT || | |
40 | info->flags & IEEE80211_TX_CTL_AMPDU) | |
41 | *tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK; | |
42 | } | |
43 | ||
74bcdb33 WYG |
44 | /* |
45 | * handle build REPLY_TX command notification. | |
46 | */ | |
47 | static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv, | |
c6baf7fb JB |
48 | struct sk_buff *skb, |
49 | struct iwl_tx_cmd *tx_cmd, | |
50 | struct ieee80211_tx_info *info, | |
51 | struct ieee80211_hdr *hdr, u8 sta_id) | |
74bcdb33 WYG |
52 | { |
53 | __le16 fc = hdr->frame_control; | |
54 | __le32 tx_flags = tx_cmd->tx_flags; | |
55 | ||
56 | tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2c2def10 JB |
57 | |
58 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
74bcdb33 | 59 | tx_flags |= TX_CMD_FLG_ACK_MSK; |
2c2def10 JB |
60 | else |
61 | tx_flags &= ~TX_CMD_FLG_ACK_MSK; | |
74bcdb33 | 62 | |
2c2def10 JB |
63 | if (ieee80211_is_probe_resp(fc)) |
64 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
65 | else if (ieee80211_is_back_req(fc)) | |
74bcdb33 | 66 | tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; |
57fbcce3 | 67 | else if (info->band == NL80211_BAND_2GHZ && |
0d8877a1 JB |
68 | priv->lib->bt_params && |
69 | priv->lib->bt_params->advanced_bt_coexist && | |
d44ae69e JB |
70 | (ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) || |
71 | ieee80211_is_reassoc_req(fc) || | |
af61a165 | 72 | info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO)) |
d44ae69e | 73 | tx_flags |= TX_CMD_FLG_IGNORE_BT; |
74bcdb33 WYG |
74 | |
75 | ||
c6baf7fb | 76 | tx_cmd->sta_id = sta_id; |
74bcdb33 WYG |
77 | if (ieee80211_has_morefrags(fc)) |
78 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
79 | ||
80 | if (ieee80211_is_data_qos(fc)) { | |
81 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
82 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
83 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
84 | } else { | |
3d29dd9b | 85 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; |
123877b8 WYG |
86 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
87 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
88 | else | |
89 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
74bcdb33 WYG |
90 | } |
91 | ||
5c3d29fc | 92 | iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags); |
74bcdb33 WYG |
93 | |
94 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
95 | if (ieee80211_is_mgmt(fc)) { | |
96 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
97 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); | |
98 | else | |
99 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); | |
100 | } else { | |
101 | tx_cmd->timeout.pm_frame_timeout = 0; | |
102 | } | |
103 | ||
104 | tx_cmd->driver_txop = 0; | |
105 | tx_cmd->tx_flags = tx_flags; | |
106 | tx_cmd->next_frame_len = 0; | |
107 | } | |
108 | ||
74bcdb33 | 109 | static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv, |
c6baf7fb JB |
110 | struct iwl_tx_cmd *tx_cmd, |
111 | struct ieee80211_tx_info *info, | |
36323f81 | 112 | struct ieee80211_sta *sta, |
c6baf7fb | 113 | __le16 fc) |
74bcdb33 WYG |
114 | { |
115 | u32 rate_flags; | |
116 | int rate_idx; | |
117 | u8 rts_retry_limit; | |
118 | u8 data_retry_limit; | |
119 | u8 rate_plcp; | |
120 | ||
15b86bff | 121 | if (priv->wowlan) { |
f3129b73 WYG |
122 | rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT; |
123 | data_retry_limit = IWLAGN_LOW_RETRY_LIMIT; | |
124 | } else { | |
125 | /* Set retry limit on RTS packets */ | |
126 | rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT; | |
127 | ||
128 | /* Set retry limit on DATA packets and Probe Responses*/ | |
129 | if (ieee80211_is_probe_resp(fc)) { | |
130 | data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT; | |
131 | rts_retry_limit = | |
132 | min(data_retry_limit, rts_retry_limit); | |
133 | } else if (ieee80211_is_back_req(fc)) | |
134 | data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT; | |
135 | else | |
136 | data_retry_limit = IWLAGN_DEFAULT_TX_RETRY; | |
137 | } | |
74bcdb33 | 138 | |
78558cb4 | 139 | tx_cmd->data_retry_limit = data_retry_limit; |
74bcdb33 WYG |
140 | tx_cmd->rts_retry_limit = rts_retry_limit; |
141 | ||
142 | /* DATA packets will use the uCode station table for rate/antenna | |
143 | * selection */ | |
144 | if (ieee80211_is_data(fc)) { | |
145 | tx_cmd->initial_rate_index = 0; | |
146 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
147 | return; | |
b8deb492 WYG |
148 | } else if (ieee80211_is_back_req(fc)) |
149 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
74bcdb33 WYG |
150 | |
151 | /** | |
152 | * If the current TX rate stored in mac80211 has the MCS bit set, it's | |
153 | * not really a TX rate. Thus, we use the lowest supported rate for | |
154 | * this band. Also use the lowest supported rate if the stored rate | |
155 | * index is invalid. | |
156 | */ | |
157 | rate_idx = info->control.rates[0].idx; | |
158 | if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || | |
159 | (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) | |
26a7ca9a | 160 | rate_idx = rate_lowest_index( |
b7998c8b | 161 | &priv->nvm_data->bands[info->band], sta); |
74bcdb33 | 162 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ |
57fbcce3 | 163 | if (info->band == NL80211_BAND_5GHZ) |
74bcdb33 WYG |
164 | rate_idx += IWL_FIRST_OFDM_RATE; |
165 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
166 | rate_plcp = iwl_rates[rate_idx].plcp; | |
167 | /* Zero out flags for this packet */ | |
168 | rate_flags = 0; | |
169 | ||
170 | /* Set CCK flag as needed */ | |
171 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
172 | rate_flags |= RATE_MCS_CCK_MSK; | |
173 | ||
74bcdb33 | 174 | /* Set up antennas */ |
e70fe7eb EG |
175 | if (priv->lib->bt_params && |
176 | priv->lib->bt_params->advanced_bt_coexist && | |
177 | priv->bt_full_concurrent) { | |
bee008b7 WYG |
178 | /* operated as 1x1 in full concurrency mode */ |
179 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
b7998c8b | 180 | first_antenna(priv->nvm_data->valid_tx_ant)); |
bee008b7 | 181 | } else |
26a7ca9a JB |
182 | priv->mgmt_tx_ant = iwl_toggle_tx_ant( |
183 | priv, priv->mgmt_tx_ant, | |
b7998c8b | 184 | priv->nvm_data->valid_tx_ant); |
74bcdb33 WYG |
185 | rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant); |
186 | ||
187 | /* Set the rate in the TX cmd */ | |
188 | tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags); | |
189 | } | |
190 | ||
191 | static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv *priv, | |
f2b69ef0 JB |
192 | struct ieee80211_tx_info *info, |
193 | struct iwl_tx_cmd *tx_cmd, | |
194 | struct sk_buff *skb_frag) | |
74bcdb33 WYG |
195 | { |
196 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
197 | ||
97359d12 JB |
198 | switch (keyconf->cipher) { |
199 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
200 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
201 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
202 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
203 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
74bcdb33 WYG |
204 | break; |
205 | ||
97359d12 | 206 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 207 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 208 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
209 | break; |
210 | ||
97359d12 JB |
211 | case WLAN_CIPHER_SUITE_WEP104: |
212 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
213 | /* fall through */ | |
214 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
215 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
216 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
217 | ||
74bcdb33 WYG |
218 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
219 | ||
220 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
221 | "with key %d\n", keyconf->keyidx); | |
222 | break; | |
223 | ||
224 | default: | |
97359d12 | 225 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
226 | break; |
227 | } | |
228 | } | |
229 | ||
955570fc JB |
230 | /** |
231 | * iwl_sta_id_or_broadcast - return sta_id or broadcast sta | |
232 | * @context: the current context | |
233 | * @sta: mac80211 station | |
234 | * | |
235 | * In certain circumstances mac80211 passes a station pointer | |
236 | * that may be %NULL, for example during TX or key setup. In | |
237 | * that case, we need to use the broadcast station, so this | |
238 | * inline wraps that pattern. | |
239 | */ | |
240 | static int iwl_sta_id_or_broadcast(struct iwl_rxon_context *context, | |
241 | struct ieee80211_sta *sta) | |
242 | { | |
243 | int sta_id; | |
244 | ||
245 | if (!sta) | |
246 | return context->bcast_sta_id; | |
247 | ||
248 | sta_id = iwl_sta_id(sta); | |
249 | ||
250 | /* | |
251 | * mac80211 should not be passing a partially | |
252 | * initialised station! | |
253 | */ | |
254 | WARN_ON(sta_id == IWL_INVALID_STATION); | |
255 | ||
256 | return sta_id; | |
257 | } | |
258 | ||
74bcdb33 WYG |
259 | /* |
260 | * start REPLY_TX command process | |
261 | */ | |
36323f81 TH |
262 | int iwlagn_tx_skb(struct iwl_priv *priv, |
263 | struct ieee80211_sta *sta, | |
264 | struct sk_buff *skb) | |
74bcdb33 WYG |
265 | { |
266 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
267 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 268 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 269 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
59c647b6 | 270 | struct iwl_device_cmd *dev_cmd; |
47c1b496 | 271 | struct iwl_tx_cmd *tx_cmd; |
74bcdb33 WYG |
272 | __le16 fc; |
273 | u8 hdr_len; | |
34b5321e EG |
274 | u16 len, seq_number = 0; |
275 | u8 sta_id, tid = IWL_MAX_TID_COUNT; | |
c8a8ab44 | 276 | bool is_agg = false, is_data_qos = false; |
9eae88fa | 277 | int txq_id; |
74bcdb33 | 278 | |
c6baf7fb | 279 | if (info->control.vif) |
a194e324 JB |
280 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
281 | ||
83626404 | 282 | if (iwl_is_rfkill(priv)) { |
74bcdb33 | 283 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 284 | goto drop_unlock_priv; |
74bcdb33 WYG |
285 | } |
286 | ||
287 | fc = hdr->frame_control; | |
288 | ||
289 | #ifdef CONFIG_IWLWIFI_DEBUG | |
290 | if (ieee80211_is_auth(fc)) | |
291 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
292 | else if (ieee80211_is_assoc_req(fc)) | |
293 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
294 | else if (ieee80211_is_reassoc_req(fc)) | |
295 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
296 | #endif | |
297 | ||
79d3eef8 JB |
298 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
299 | struct iwl_wipan_noa_data *noa_data = | |
300 | rcu_dereference(priv->noa_data); | |
301 | ||
302 | if (noa_data && | |
303 | pskb_expand_head(skb, 0, noa_data->length, | |
304 | GFP_ATOMIC) == 0) { | |
59ae1d12 | 305 | skb_put_data(skb, noa_data->data, noa_data->length); |
79d3eef8 JB |
306 | hdr = (struct ieee80211_hdr *)skb->data; |
307 | } | |
308 | } | |
309 | ||
74bcdb33 WYG |
310 | hdr_len = ieee80211_hdrlen(fc); |
311 | ||
bfd36103 SG |
312 | /* For management frames use broadcast id to do not break aggregation */ |
313 | if (!ieee80211_is_data(fc)) | |
314 | sta_id = ctx->bcast_sta_id; | |
315 | else { | |
316 | /* Find index into station table for destination station */ | |
36323f81 | 317 | sta_id = iwl_sta_id_or_broadcast(ctx, sta); |
bfd36103 SG |
318 | if (sta_id == IWL_INVALID_STATION) { |
319 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
320 | hdr->addr1); | |
e00cf3b9 | 321 | goto drop_unlock_priv; |
bfd36103 | 322 | } |
74bcdb33 WYG |
323 | } |
324 | ||
36323f81 TH |
325 | if (sta) |
326 | sta_priv = (void *)sta->drv_priv; | |
74bcdb33 | 327 | |
67158b67 | 328 | if (sta_priv && sta_priv->asleep && |
02f2f1a9 | 329 | (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) { |
74bcdb33 WYG |
330 | /* |
331 | * This sends an asynchronous command to the device, | |
332 | * but we can rely on it being processed before the | |
333 | * next frame is processed -- and the next frame to | |
334 | * this station is the one that will consume this | |
335 | * counter. | |
336 | * For now set the counter to just 1 since we do not | |
337 | * support uAPSD yet. | |
02f2f1a9 JB |
338 | * |
339 | * FIXME: If we get two non-bufferable frames one | |
340 | * after the other, we might only send out one of | |
341 | * them because this is racy. | |
74bcdb33 WYG |
342 | */ |
343 | iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); | |
344 | } | |
345 | ||
59c647b6 | 346 | dev_cmd = iwl_trans_alloc_tx_cmd(priv->trans); |
dfa2bdba EG |
347 | |
348 | if (unlikely(!dev_cmd)) | |
71cb9924 | 349 | goto drop_unlock_priv; |
74bcdb33 | 350 | |
dfa2bdba | 351 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
3961a61a | 352 | dev_cmd->hdr.cmd = REPLY_TX; |
132f98c2 | 353 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 354 | |
74bcdb33 WYG |
355 | /* Total # bytes to be transmitted */ |
356 | len = (u16)skb->len; | |
357 | tx_cmd->len = cpu_to_le16(len); | |
358 | ||
359 | if (info->control.hw_key) | |
f2b69ef0 | 360 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb); |
74bcdb33 WYG |
361 | |
362 | /* TODO need this for burst mode later on */ | |
d44ae69e | 363 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 | 364 | |
36323f81 | 365 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, sta, fc); |
74bcdb33 | 366 | |
1a849613 | 367 | memset(&info->status, 0, sizeof(info->status)); |
3f73b8ca | 368 | memset(info->driver_data, 0, sizeof(info->driver_data)); |
1a849613 | 369 | |
2c452297 | 370 | info->driver_data[0] = ctx; |
dfa2bdba | 371 | info->driver_data[1] = dev_cmd; |
11741739 | 372 | /* From now on, we cannot access info->control */ |
2c452297 | 373 | |
fa23cb04 | 374 | spin_lock(&priv->sta_lock); |
71cb9924 | 375 | |
34b5321e EG |
376 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
377 | u8 *qc = NULL; | |
378 | struct iwl_tid_data *tid_data; | |
379 | qc = ieee80211_get_qos_ctl(hdr); | |
380 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
381 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
382 | goto drop_unlock_sta; | |
04cf6824 | 383 | tid_data = &priv->tid_data[sta_id][tid]; |
34b5321e | 384 | |
97756fb1 EG |
385 | /* aggregation is on for this <sta,tid> */ |
386 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
387 | tid_data->agg.state != IWL_AGG_ON) { | |
3c6acb61 JB |
388 | IWL_ERR(priv, |
389 | "TX_CTL_AMPDU while not in AGG: Tx flags = 0x%08x, agg.state = %d\n", | |
97756fb1 | 390 | info->flags, tid_data->agg.state); |
3c6acb61 | 391 | IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d\n", |
9a886586 JB |
392 | sta_id, tid, |
393 | IEEE80211_SEQ_TO_SN(tid_data->seq_number)); | |
97756fb1 EG |
394 | goto drop_unlock_sta; |
395 | } | |
396 | ||
b5326db8 EG |
397 | /* We can receive packets from the stack in IWL_AGG_{ON,OFF} |
398 | * only. Check this here. | |
399 | */ | |
400 | if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON && | |
ebdfb7a1 | 401 | tid_data->agg.state != IWL_AGG_OFF, |
3c6acb61 | 402 | "Tx while agg.state = %d\n", tid_data->agg.state)) |
b5326db8 EG |
403 | goto drop_unlock_sta; |
404 | ||
34b5321e EG |
405 | seq_number = tid_data->seq_number; |
406 | seq_number &= IEEE80211_SCTL_SEQ; | |
407 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
408 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
409 | seq_number += 0x10; | |
c8a8ab44 JB |
410 | |
411 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
412 | is_agg = true; | |
413 | is_data_qos = true; | |
34b5321e EG |
414 | } |
415 | ||
416 | /* Copy MAC header from skb into command buffer */ | |
417 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
418 | ||
f6b12952 EG |
419 | txq_id = info->hw_queue; |
420 | ||
9eae88fa JB |
421 | if (is_agg) |
422 | txq_id = priv->tid_data[sta_id][tid].agg.txq_id; | |
423 | else if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) { | |
9eae88fa JB |
424 | /* |
425 | * The microcode will clear the more data | |
426 | * bit in the last frame it transmits. | |
427 | */ | |
428 | hdr->frame_control |= | |
429 | cpu_to_le16(IEEE80211_FCTL_MOREDATA); | |
f6b12952 | 430 | } |
9eae88fa | 431 | |
1479177b JB |
432 | WARN_ON_ONCE(is_agg && |
433 | priv->queue_to_mac80211[txq_id] != info->hw_queue); | |
434 | ||
1c3fea82 EG |
435 | IWL_DEBUG_TX(priv, "TX to [%d|%d] Q:%d - seq: 0x%x\n", sta_id, tid, |
436 | txq_id, seq_number); | |
437 | ||
68e8dfda | 438 | if (iwl_trans_tx(priv->trans, skb, dev_cmd, txq_id)) |
47c1b496 | 439 | goto drop_unlock_sta; |
2c46f72e | 440 | |
c8a8ab44 | 441 | if (is_data_qos && !ieee80211_has_morefrags(fc)) |
04cf6824 | 442 | priv->tid_data[sta_id][tid].seq_number = seq_number; |
34b5321e | 443 | |
fa23cb04 | 444 | spin_unlock(&priv->sta_lock); |
74bcdb33 | 445 | |
2e34034e JB |
446 | /* |
447 | * Avoid atomic ops if it isn't an associated client. | |
448 | * Also, if this is a packet for aggregation, don't | |
449 | * increase the counter because the ucode will stop | |
450 | * aggregation queues when their respective station | |
451 | * goes to sleep. | |
452 | */ | |
453 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
454 | atomic_inc(&sta_priv->pending_frames); |
455 | ||
74bcdb33 WYG |
456 | return 0; |
457 | ||
2c46f72e | 458 | drop_unlock_sta: |
dfa2bdba | 459 | if (dev_cmd) |
59c647b6 | 460 | iwl_trans_free_tx_cmd(priv->trans, dev_cmd); |
fa23cb04 | 461 | spin_unlock(&priv->sta_lock); |
2c46f72e | 462 | drop_unlock_priv: |
74bcdb33 WYG |
463 | return -1; |
464 | } | |
465 | ||
1479177b | 466 | static int iwlagn_alloc_agg_txq(struct iwl_priv *priv, int mq) |
9eae88fa JB |
467 | { |
468 | int q; | |
469 | ||
470 | for (q = IWLAGN_FIRST_AMPDU_QUEUE; | |
7d34a7d7 | 471 | q < priv->trans->trans_cfg->base_params->num_of_queues; q++) { |
9eae88fa | 472 | if (!test_and_set_bit(q, priv->agg_q_alloc)) { |
1479177b | 473 | priv->queue_to_mac80211[q] = mq; |
9eae88fa JB |
474 | return q; |
475 | } | |
476 | } | |
477 | ||
478 | return -ENOSPC; | |
479 | } | |
480 | ||
481 | static void iwlagn_dealloc_agg_txq(struct iwl_priv *priv, int q) | |
482 | { | |
483 | clear_bit(q, priv->agg_q_alloc); | |
1479177b | 484 | priv->queue_to_mac80211[q] = IWL_INVALID_MAC80211_QUEUE; |
9eae88fa JB |
485 | } |
486 | ||
bc237730 EG |
487 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
488 | struct ieee80211_sta *sta, u16 tid) | |
489 | { | |
bc237730 | 490 | struct iwl_tid_data *tid_data; |
9eae88fa | 491 | int sta_id, txq_id; |
682e5f64 | 492 | enum iwl_agg_state agg_state; |
bc237730 EG |
493 | |
494 | sta_id = iwl_sta_id(sta); | |
495 | ||
496 | if (sta_id == IWL_INVALID_STATION) { | |
497 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
498 | return -ENXIO; | |
499 | } | |
500 | ||
fa23cb04 | 501 | spin_lock_bh(&priv->sta_lock); |
bc237730 | 502 | |
04cf6824 | 503 | tid_data = &priv->tid_data[sta_id][tid]; |
da58eefa | 504 | txq_id = tid_data->agg.txq_id; |
bc237730 | 505 | |
da58eefa | 506 | switch (tid_data->agg.state) { |
bc237730 EG |
507 | case IWL_EMPTYING_HW_QUEUE_ADDBA: |
508 | /* | |
509 | * This can happen if the peer stops aggregation | |
510 | * again before we've had a chance to drain the | |
511 | * queue we selected previously, i.e. before the | |
512 | * session was really started completely. | |
513 | */ | |
514 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
515 | goto turn_off; | |
682e5f64 EG |
516 | case IWL_AGG_STARTING: |
517 | /* | |
518 | * This can happen when the session is stopped before | |
519 | * we receive ADDBA response | |
520 | */ | |
521 | IWL_DEBUG_HT(priv, "AGG stop before AGG became operational\n"); | |
522 | goto turn_off; | |
bc237730 EG |
523 | case IWL_AGG_ON: |
524 | break; | |
525 | default: | |
da58eefa EG |
526 | IWL_WARN(priv, |
527 | "Stopping AGG while state not ON or starting for %d on %d (%d)\n", | |
528 | sta_id, tid, tid_data->agg.state); | |
fa23cb04 | 529 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
530 | return 0; |
531 | } | |
532 | ||
9a886586 | 533 | tid_data->agg.ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
bc237730 EG |
534 | |
535 | /* There are still packets for this RA / TID in the HW */ | |
9eae88fa JB |
536 | if (!test_bit(txq_id, priv->agg_q_alloc)) { |
537 | IWL_DEBUG_TX_QUEUES(priv, | |
538 | "stopping AGG on STA/TID %d/%d but hwq %d not used\n", | |
539 | sta_id, tid, txq_id); | |
540 | } else if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
da58eefa EG |
541 | IWL_DEBUG_TX_QUEUES(priv, |
542 | "Can't proceed: ssn %d, next_recl = %d\n", | |
bc237730 EG |
543 | tid_data->agg.ssn, |
544 | tid_data->next_reclaimed); | |
da58eefa | 545 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_DELBA; |
fa23cb04 | 546 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
547 | return 0; |
548 | } | |
549 | ||
0ca24daf | 550 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
bc237730 EG |
551 | tid_data->agg.ssn); |
552 | turn_off: | |
da58eefa EG |
553 | agg_state = tid_data->agg.state; |
554 | tid_data->agg.state = IWL_AGG_OFF; | |
bc237730 | 555 | |
fa23cb04 | 556 | spin_unlock_bh(&priv->sta_lock); |
bc237730 | 557 | |
9eae88fa | 558 | if (test_bit(txq_id, priv->agg_q_alloc)) { |
8ff44ef2 EG |
559 | /* |
560 | * If the transport didn't know that we wanted to start | |
561 | * agreggation, don't tell it that we want to stop them. | |
562 | * This can happen when we don't get the addBA response on | |
563 | * time, or we hadn't time to drain the AC queues. | |
682e5f64 | 564 | */ |
8ff44ef2 | 565 | if (agg_state == IWL_AGG_ON) |
d4578ea8 | 566 | iwl_trans_txq_disable(priv->trans, txq_id, true); |
8ff44ef2 EG |
567 | else |
568 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
569 | agg_state); | |
9eae88fa JB |
570 | iwlagn_dealloc_agg_txq(priv, txq_id); |
571 | } | |
bc237730 | 572 | |
fdf426a3 | 573 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
bc237730 EG |
574 | |
575 | return 0; | |
576 | } | |
577 | ||
832f47e3 | 578 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 579 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 580 | { |
1479177b | 581 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
3c69b595 | 582 | struct iwl_tid_data *tid_data; |
9eae88fa | 583 | int sta_id, txq_id, ret; |
74bcdb33 | 584 | |
5bc9890f WYG |
585 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
586 | sta->addr, tid); | |
74bcdb33 | 587 | |
619753ff | 588 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
589 | if (sta_id == IWL_INVALID_STATION) { |
590 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
591 | return -ENXIO; | |
592 | } | |
5f85a789 | 593 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
594 | return -EINVAL; |
595 | ||
04cf6824 | 596 | if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
597 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
598 | return -ENXIO; | |
599 | } | |
600 | ||
1479177b | 601 | txq_id = iwlagn_alloc_agg_txq(priv, ctx->ac_to_queue[tid_to_ac[tid]]); |
9eae88fa JB |
602 | if (txq_id < 0) { |
603 | IWL_DEBUG_TX_QUEUES(priv, | |
604 | "No free aggregation queue for %pM/%d\n", | |
605 | sta->addr, tid); | |
606 | return txq_id; | |
607 | } | |
608 | ||
288712a6 | 609 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
610 | if (ret) |
611 | return ret; | |
612 | ||
fa23cb04 | 613 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 614 | tid_data = &priv->tid_data[sta_id][tid]; |
9a886586 | 615 | tid_data->agg.ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number); |
9eae88fa | 616 | tid_data->agg.txq_id = txq_id; |
3c69b595 EG |
617 | |
618 | *ssn = tid_data->agg.ssn; | |
619 | ||
3c69b595 | 620 | if (*ssn == tid_data->next_reclaimed) { |
0ca24daf | 621 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d\n", |
3c69b595 | 622 | tid_data->agg.ssn); |
682e5f64 | 623 | tid_data->agg.state = IWL_AGG_STARTING; |
2ce113de | 624 | ret = IEEE80211_AMPDU_TX_START_IMMEDIATE; |
3c69b595 EG |
625 | } else { |
626 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
0ca24daf | 627 | "next_reclaimed = %d\n", |
3c69b595 EG |
628 | tid_data->agg.ssn, |
629 | tid_data->next_reclaimed); | |
630 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
631 | } | |
fa23cb04 | 632 | spin_unlock_bh(&priv->sta_lock); |
288712a6 | 633 | |
74bcdb33 WYG |
634 | return ret; |
635 | } | |
636 | ||
2d055afd EG |
637 | int iwlagn_tx_agg_flush(struct iwl_priv *priv, struct ieee80211_vif *vif, |
638 | struct ieee80211_sta *sta, u16 tid) | |
639 | { | |
640 | struct iwl_tid_data *tid_data; | |
641 | enum iwl_agg_state agg_state; | |
642 | int sta_id, txq_id; | |
643 | sta_id = iwl_sta_id(sta); | |
644 | ||
645 | /* | |
646 | * First set the agg state to OFF to avoid calling | |
647 | * ieee80211_stop_tx_ba_cb in iwlagn_check_ratid_empty. | |
648 | */ | |
649 | spin_lock_bh(&priv->sta_lock); | |
650 | ||
651 | tid_data = &priv->tid_data[sta_id][tid]; | |
652 | txq_id = tid_data->agg.txq_id; | |
653 | agg_state = tid_data->agg.state; | |
654 | IWL_DEBUG_TX_QUEUES(priv, "Flush AGG: sta %d tid %d q %d state %d\n", | |
655 | sta_id, tid, txq_id, tid_data->agg.state); | |
656 | ||
657 | tid_data->agg.state = IWL_AGG_OFF; | |
658 | ||
659 | spin_unlock_bh(&priv->sta_lock); | |
660 | ||
661 | if (iwlagn_txfifo_flush(priv, BIT(txq_id))) | |
662 | IWL_ERR(priv, "Couldn't flush the AGG queue\n"); | |
663 | ||
664 | if (test_bit(txq_id, priv->agg_q_alloc)) { | |
665 | /* | |
666 | * If the transport didn't know that we wanted to start | |
667 | * agreggation, don't tell it that we want to stop them. | |
668 | * This can happen when we don't get the addBA response on | |
669 | * time, or we hadn't time to drain the AC queues. | |
670 | */ | |
671 | if (agg_state == IWL_AGG_ON) | |
d4578ea8 | 672 | iwl_trans_txq_disable(priv->trans, txq_id, true); |
2d055afd EG |
673 | else |
674 | IWL_DEBUG_TX_QUEUES(priv, "Don't disable tx agg: %d\n", | |
675 | agg_state); | |
676 | iwlagn_dealloc_agg_txq(priv, txq_id); | |
677 | } | |
678 | ||
679 | return 0; | |
680 | } | |
681 | ||
822e8b2a EG |
682 | int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, |
683 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
684 | { | |
685 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; | |
686 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
9eae88fa | 687 | int q, fifo; |
822e8b2a EG |
688 | u16 ssn; |
689 | ||
690 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
691 | ||
fa23cb04 | 692 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 693 | ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; |
9eae88fa | 694 | q = priv->tid_data[sta_priv->sta_id][tid].agg.txq_id; |
682e5f64 | 695 | priv->tid_data[sta_priv->sta_id][tid].agg.state = IWL_AGG_ON; |
fa23cb04 | 696 | spin_unlock_bh(&priv->sta_lock); |
822e8b2a | 697 | |
9eae88fa JB |
698 | fifo = ctx->ac_to_fifo[tid_to_ac[tid]]; |
699 | ||
4beaf6c2 | 700 | iwl_trans_txq_enable(priv->trans, q, fifo, sta_priv->sta_id, tid, |
4cf677fd | 701 | buf_size, ssn, 0); |
822e8b2a EG |
702 | |
703 | /* | |
704 | * If the limit is 0, then it wasn't initialised yet, | |
705 | * use the default. We can do that since we take the | |
706 | * minimum below, and we don't want to go above our | |
707 | * default due to hardware restrictions. | |
708 | */ | |
709 | if (sta_priv->max_agg_bufsize == 0) | |
710 | sta_priv->max_agg_bufsize = | |
711 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
712 | ||
713 | /* | |
714 | * Even though in theory the peer could have different | |
715 | * aggregation reorder buffer sizes for different sessions, | |
716 | * our ucode doesn't allow for that and has a global limit | |
717 | * for each station. Therefore, use the minimum of all the | |
718 | * aggregation sessions and our default value. | |
719 | */ | |
720 | sta_priv->max_agg_bufsize = | |
721 | min(sta_priv->max_agg_bufsize, buf_size); | |
722 | ||
9e295116 | 723 | if (priv->hw_params.use_rts_for_aggregation) { |
822e8b2a EG |
724 | /* |
725 | * switch to RTS/CTS if it is the prefer protection | |
726 | * method for HT traffic | |
727 | */ | |
728 | ||
729 | sta_priv->lq_sta.lq.general_params.flags |= | |
730 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; | |
731 | } | |
732 | priv->agg_tids_count++; | |
733 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", | |
734 | priv->agg_tids_count); | |
735 | ||
736 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = | |
737 | sta_priv->max_agg_bufsize; | |
738 | ||
5fb8c182 | 739 | IWL_DEBUG_HT(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
822e8b2a EG |
740 | sta->addr, tid); |
741 | ||
742 | return iwl_send_lq_cmd(priv, ctx, | |
743 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); | |
744 | } | |
745 | ||
20addec6 EG |
746 | static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid) |
747 | { | |
04cf6824 | 748 | struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid]; |
fdf426a3 EG |
749 | enum iwl_rxon_context_id ctx; |
750 | struct ieee80211_vif *vif; | |
751 | u8 *addr; | |
20addec6 | 752 | |
fa23cb04 | 753 | lockdep_assert_held(&priv->sta_lock); |
20addec6 | 754 | |
fdf426a3 EG |
755 | addr = priv->stations[sta_id].sta.sta.addr; |
756 | ctx = priv->stations[sta_id].ctxid; | |
757 | vif = priv->contexts[ctx].vif; | |
758 | ||
04cf6824 | 759 | switch (priv->tid_data[sta_id][tid].agg.state) { |
20addec6 EG |
760 | case IWL_EMPTYING_HW_QUEUE_DELBA: |
761 | /* There are no packets for this RA / TID in the HW any more */ | |
762 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
763 | IWL_DEBUG_TX_QUEUES(priv, | |
3c6acb61 JB |
764 | "Can continue DELBA flow ssn = next_recl = %d\n", |
765 | tid_data->next_reclaimed); | |
d0624be6 | 766 | iwl_trans_txq_disable(priv->trans, |
d4578ea8 | 767 | tid_data->agg.txq_id, true); |
9eae88fa | 768 | iwlagn_dealloc_agg_txq(priv, tid_data->agg.txq_id); |
20addec6 | 769 | tid_data->agg.state = IWL_AGG_OFF; |
fdf426a3 | 770 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
771 | } |
772 | break; | |
773 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
774 | /* There are no packets for this RA / TID in the HW any more */ | |
775 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
776 | IWL_DEBUG_TX_QUEUES(priv, | |
3c6acb61 JB |
777 | "Can continue ADDBA flow ssn = next_recl = %d\n", |
778 | tid_data->next_reclaimed); | |
682e5f64 | 779 | tid_data->agg.state = IWL_AGG_STARTING; |
fdf426a3 | 780 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
781 | } |
782 | break; | |
783 | default: | |
784 | break; | |
785 | } | |
786 | } | |
787 | ||
2e34034e JB |
788 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
789 | struct iwl_rxon_context *ctx, | |
790 | const u8 *addr1) | |
74bcdb33 | 791 | { |
74bcdb33 WYG |
792 | struct ieee80211_sta *sta; |
793 | struct iwl_station_priv *sta_priv; | |
794 | ||
6db6340c | 795 | rcu_read_lock(); |
2e34034e | 796 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
797 | if (sta) { |
798 | sta_priv = (void *)sta->drv_priv; | |
799 | /* avoid atomic ops if this isn't a client */ | |
800 | if (sta_priv->client && | |
801 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
802 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
803 | } | |
6db6340c | 804 | rcu_read_unlock(); |
2e34034e JB |
805 | } |
806 | ||
a0eaad71 EG |
807 | /** |
808 | * translate ucode response to mac80211 tx status control values | |
809 | */ | |
04e1cabe | 810 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 811 | struct ieee80211_tx_info *info) |
2e34034e | 812 | { |
d748b464 | 813 | struct ieee80211_tx_rate *r = &info->status.rates[0]; |
74bcdb33 | 814 | |
d748b464 | 815 | info->status.antenna = |
a0eaad71 EG |
816 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); |
817 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
818 | r->flags |= IEEE80211_TX_RC_MCS; | |
819 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
820 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
821 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
822 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
823 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
824 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
825 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
826 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
827 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
828 | } |
829 | ||
a0eaad71 EG |
830 | #ifdef CONFIG_IWLWIFI_DEBUG |
831 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 832 | { |
a0eaad71 EG |
833 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
834 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 835 | |
a0eaad71 EG |
836 | switch (status & TX_STATUS_MSK) { |
837 | case TX_STATUS_SUCCESS: | |
838 | return "SUCCESS"; | |
839 | TX_STATUS_POSTPONE(DELAY); | |
840 | TX_STATUS_POSTPONE(FEW_BYTES); | |
841 | TX_STATUS_POSTPONE(BT_PRIO); | |
842 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
843 | TX_STATUS_POSTPONE(CALC_TTAK); | |
844 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
845 | TX_STATUS_FAIL(SHORT_LIMIT); | |
846 | TX_STATUS_FAIL(LONG_LIMIT); | |
847 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
848 | TX_STATUS_FAIL(DRAIN_FLOW); | |
849 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
850 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
851 | TX_STATUS_FAIL(DEST_PS); | |
852 | TX_STATUS_FAIL(HOST_ABORTED); | |
853 | TX_STATUS_FAIL(BT_RETRY); | |
854 | TX_STATUS_FAIL(STA_INVALID); | |
855 | TX_STATUS_FAIL(FRAG_DROPPED); | |
856 | TX_STATUS_FAIL(TID_DISABLE); | |
857 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
858 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
859 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
860 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
861 | } |
862 | ||
a0eaad71 | 863 | return "UNKNOWN"; |
74bcdb33 | 864 | |
a0eaad71 EG |
865 | #undef TX_STATUS_FAIL |
866 | #undef TX_STATUS_POSTPONE | |
867 | } | |
868 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 869 | |
04e1cabe EG |
870 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
871 | { | |
872 | status &= AGG_TX_STATUS_MSK; | |
873 | ||
874 | switch (status) { | |
875 | case AGG_TX_STATE_UNDERRUN_MSK: | |
876 | priv->reply_agg_tx_stats.underrun++; | |
877 | break; | |
878 | case AGG_TX_STATE_BT_PRIO_MSK: | |
879 | priv->reply_agg_tx_stats.bt_prio++; | |
880 | break; | |
881 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
882 | priv->reply_agg_tx_stats.few_bytes++; | |
883 | break; | |
884 | case AGG_TX_STATE_ABORT_MSK: | |
885 | priv->reply_agg_tx_stats.abort++; | |
886 | break; | |
887 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
888 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
889 | break; | |
890 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
891 | priv->reply_agg_tx_stats.last_sent_try++; | |
892 | break; | |
893 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
894 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
895 | break; | |
896 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
897 | priv->reply_agg_tx_stats.scd_query++; | |
898 | break; | |
899 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
900 | priv->reply_agg_tx_stats.bad_crc32++; | |
901 | break; | |
902 | case AGG_TX_STATE_RESPONSE_MSK: | |
903 | priv->reply_agg_tx_stats.response++; | |
904 | break; | |
905 | case AGG_TX_STATE_DUMP_TX_MSK: | |
906 | priv->reply_agg_tx_stats.dump_tx++; | |
907 | break; | |
908 | case AGG_TX_STATE_DELAY_TX_MSK: | |
909 | priv->reply_agg_tx_stats.delay_tx++; | |
910 | break; | |
911 | default: | |
912 | priv->reply_agg_tx_stats.unknown++; | |
913 | break; | |
914 | } | |
915 | } | |
916 | ||
cfe41828 EG |
917 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
918 | { | |
919 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
9a886586 | 920 | tx_resp->frame_count) & IEEE80211_MAX_SN; |
cfe41828 EG |
921 | } |
922 | ||
a0eaad71 EG |
923 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
924 | struct iwlagn_tx_resp *tx_resp) | |
925 | { | |
926 | struct agg_tx_status *frame_status = &tx_resp->status; | |
927 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
928 | IWLAGN_TX_RES_TID_POS; | |
929 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
930 | IWLAGN_TX_RES_RA_POS; | |
04cf6824 | 931 | struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
932 | u32 status = le16_to_cpu(tx_resp->status.status); |
933 | int i; | |
934 | ||
3d29dd9b EG |
935 | WARN_ON(tid == IWL_TID_NON_QOS); |
936 | ||
a0eaad71 EG |
937 | if (agg->wait_for_ba) |
938 | IWL_DEBUG_TX_REPLY(priv, | |
939 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 940 | |
a0eaad71 EG |
941 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
942 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
943 | ||
944 | /* | |
945 | * If the BT kill count is non-zero, we'll get this | |
946 | * notification again. | |
947 | */ | |
948 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
0d8877a1 JB |
949 | priv->lib->bt_params && |
950 | priv->lib->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
951 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
952 | } | |
b2502698 | 953 | |
1a849613 EG |
954 | if (tx_resp->frame_count == 1) |
955 | return; | |
956 | ||
cfe41828 EG |
957 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d initial_rate 0x%x ssn %d frm_cnt %d\n", |
958 | agg->txq_id, | |
959 | le32_to_cpu(tx_resp->rate_n_flags), | |
960 | iwlagn_get_scd_ssn(tx_resp), tx_resp->frame_count); | |
961 | ||
a0eaad71 EG |
962 | /* Construct bit-map of pending frames within Tx window */ |
963 | for (i = 0; i < tx_resp->frame_count; i++) { | |
964 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
cfe41828 | 965 | u8 retry_cnt = (fstatus & AGG_TX_TRY_MSK) >> AGG_TX_TRY_POS; |
74bcdb33 | 966 | |
a0eaad71 EG |
967 | if (status & AGG_TX_STATUS_MSK) |
968 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 969 | |
a0eaad71 EG |
970 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
971 | AGG_TX_STATE_ABORT_MSK)) | |
972 | continue; | |
cfe41828 EG |
973 | |
974 | if (status & AGG_TX_STATUS_MSK || retry_cnt > 1) | |
975 | IWL_DEBUG_TX_REPLY(priv, | |
976 | "%d: status %s (0x%04x), try-count (0x%01x)\n", | |
977 | i, | |
978 | iwl_get_agg_tx_fail_reason(fstatus), | |
979 | fstatus & AGG_TX_STATUS_MSK, | |
980 | retry_cnt); | |
74bcdb33 | 981 | } |
74bcdb33 WYG |
982 | } |
983 | ||
04e1cabe EG |
984 | #ifdef CONFIG_IWLWIFI_DEBUG |
985 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
986 | ||
987 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
988 | { | |
989 | status &= AGG_TX_STATUS_MSK; | |
990 | switch (status) { | |
991 | case AGG_TX_STATE_TRANSMITTED: | |
992 | return "SUCCESS"; | |
993 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
994 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
995 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
996 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
997 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
998 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
999 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
1000 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
1001 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
1002 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
1003 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
1004 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
1005 | } | |
1006 | ||
1007 | return "UNKNOWN"; | |
1008 | } | |
1009 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
1010 | ||
04e1cabe EG |
1011 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
1012 | { | |
1013 | status &= TX_STATUS_MSK; | |
1014 | ||
1015 | switch (status) { | |
1016 | case TX_STATUS_POSTPONE_DELAY: | |
1017 | priv->reply_tx_stats.pp_delay++; | |
1018 | break; | |
1019 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
1020 | priv->reply_tx_stats.pp_few_bytes++; | |
1021 | break; | |
1022 | case TX_STATUS_POSTPONE_BT_PRIO: | |
1023 | priv->reply_tx_stats.pp_bt_prio++; | |
1024 | break; | |
1025 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
1026 | priv->reply_tx_stats.pp_quiet_period++; | |
1027 | break; | |
1028 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
1029 | priv->reply_tx_stats.pp_calc_ttak++; | |
1030 | break; | |
1031 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
1032 | priv->reply_tx_stats.int_crossed_retry++; | |
1033 | break; | |
1034 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
1035 | priv->reply_tx_stats.short_limit++; | |
1036 | break; | |
1037 | case TX_STATUS_FAIL_LONG_LIMIT: | |
1038 | priv->reply_tx_stats.long_limit++; | |
1039 | break; | |
1040 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
1041 | priv->reply_tx_stats.fifo_underrun++; | |
1042 | break; | |
1043 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
1044 | priv->reply_tx_stats.drain_flow++; | |
1045 | break; | |
1046 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
1047 | priv->reply_tx_stats.rfkill_flush++; | |
1048 | break; | |
1049 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
1050 | priv->reply_tx_stats.life_expire++; | |
1051 | break; | |
1052 | case TX_STATUS_FAIL_DEST_PS: | |
1053 | priv->reply_tx_stats.dest_ps++; | |
1054 | break; | |
1055 | case TX_STATUS_FAIL_HOST_ABORTED: | |
1056 | priv->reply_tx_stats.host_abort++; | |
1057 | break; | |
1058 | case TX_STATUS_FAIL_BT_RETRY: | |
1059 | priv->reply_tx_stats.bt_retry++; | |
1060 | break; | |
1061 | case TX_STATUS_FAIL_STA_INVALID: | |
1062 | priv->reply_tx_stats.sta_invalid++; | |
1063 | break; | |
1064 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
1065 | priv->reply_tx_stats.frag_drop++; | |
1066 | break; | |
1067 | case TX_STATUS_FAIL_TID_DISABLE: | |
1068 | priv->reply_tx_stats.tid_disable++; | |
1069 | break; | |
1070 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
1071 | priv->reply_tx_stats.fifo_flush++; | |
1072 | break; | |
1073 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
1074 | priv->reply_tx_stats.insuff_cf_poll++; | |
1075 | break; | |
1076 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
1077 | priv->reply_tx_stats.fail_hw_drop++; | |
1078 | break; | |
1079 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
1080 | priv->reply_tx_stats.sta_color_mismatch++; | |
1081 | break; | |
1082 | default: | |
1083 | priv->reply_tx_stats.unknown++; | |
1084 | break; | |
1085 | } | |
1086 | } | |
1087 | ||
1088 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
1089 | struct ieee80211_tx_info *info, | |
2eb81a40 | 1090 | struct iwlagn_tx_resp *tx_resp) |
04e1cabe | 1091 | { |
2eb81a40 | 1092 | u16 status = le16_to_cpu(tx_resp->status.status); |
04e1cabe | 1093 | |
c3e5d718 EG |
1094 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; |
1095 | ||
04e1cabe | 1096 | info->status.rates[0].count = tx_resp->failure_frame + 1; |
04e1cabe EG |
1097 | info->flags |= iwl_tx_status_to_mac80211(status); |
1098 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
1099 | info); | |
1100 | if (!iwl_is_tx_success(status)) | |
1101 | iwlagn_count_tx_err_status(priv, status); | |
1102 | } | |
1103 | ||
1104 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
1105 | u8 frame_count, u32 status) | |
1106 | { | |
1107 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
1108 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
83626404 | 1109 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) |
1ee158d8 | 1110 | queue_work(priv->workqueue, &priv->tx_flush); |
04e1cabe EG |
1111 | } |
1112 | } | |
1113 | ||
73e686f3 | 1114 | void iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb) |
74bcdb33 | 1115 | { |
a0eaad71 EG |
1116 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
1117 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
1118 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 1119 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
f8d7c1a1 | 1120 | struct iwlagn_tx_resp *tx_resp = (void *)pkt->data; |
a0eaad71 EG |
1121 | struct ieee80211_hdr *hdr; |
1122 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 1123 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
1124 | int tid; |
1125 | int sta_id; | |
1126 | int freed; | |
74bcdb33 | 1127 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
1128 | struct sk_buff_head skbs; |
1129 | struct sk_buff *skb; | |
1130 | struct iwl_rxon_context *ctx; | |
8ad71bef | 1131 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
d0eb6334 | 1132 | |
a0eaad71 EG |
1133 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
1134 | IWLAGN_TX_RES_TID_POS; | |
1135 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
1136 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 1137 | |
2bfb5092 | 1138 | spin_lock_bh(&priv->sta_lock); |
9decde95 | 1139 | |
cfe41828 EG |
1140 | if (is_agg) { |
1141 | WARN_ON_ONCE(sta_id >= IWLAGN_STATION_COUNT || | |
1142 | tid >= IWL_MAX_TID_COUNT); | |
1143 | if (txq_id != priv->tid_data[sta_id][tid].agg.txq_id) | |
1144 | IWL_ERR(priv, "txq_id mismatch: %d %d\n", txq_id, | |
1145 | priv->tid_data[sta_id][tid].agg.txq_id); | |
a0eaad71 | 1146 | iwl_rx_reply_tx_agg(priv, tx_resp); |
cfe41828 | 1147 | } |
a0eaad71 | 1148 | |
2c6ab7ff JB |
1149 | __skb_queue_head_init(&skbs); |
1150 | ||
a0eaad71 | 1151 | if (tx_resp->frame_count == 1) { |
eb9a372a | 1152 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
9a886586 | 1153 | next_reclaimed = IEEE80211_SEQ_TO_SN(next_reclaimed + 0x10); |
eb9a372a EG |
1154 | |
1155 | if (is_agg) { | |
1156 | /* If this is an aggregation queue, we can rely on the | |
1157 | * ssn since the wifi sequence number corresponds to | |
1158 | * the index in the TFD ring (%256). | |
1159 | * The seq_ctl is the sequence control of the packet | |
1160 | * to which this Tx response relates. But if there is a | |
1161 | * hole in the bitmap of the BA we received, this Tx | |
1162 | * response may allow to reclaim the hole and all the | |
1163 | * subsequent packets that were already acked. | |
1164 | * In that case, seq_ctl != ssn, and the next packet | |
1165 | * to be reclaimed will be ssn and not seq_ctl. | |
1166 | */ | |
1167 | next_reclaimed = ssn; | |
1168 | } | |
1169 | ||
ae023b27 EG |
1170 | if (tid != IWL_TID_NON_QOS) { |
1171 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1172 | next_reclaimed; | |
1173 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n", | |
1174 | next_reclaimed); | |
0b0f934e | 1175 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
ae023b27 EG |
1176 | } |
1177 | ||
27edb1ac EG |
1178 | iwl_trans_reclaim(priv->trans, txq_id, ssn, &skbs); |
1179 | ||
a0eaad71 | 1180 | freed = 0; |
2c6ab7ff JB |
1181 | |
1182 | /* process frames */ | |
1183 | skb_queue_walk(&skbs, skb) { | |
a0eaad71 EG |
1184 | hdr = (struct ieee80211_hdr *)skb->data; |
1185 | ||
1186 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
1187 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
1188 | ||
1189 | info = IEEE80211_SKB_CB(skb); | |
1190 | ctx = info->driver_data[0]; | |
59c647b6 EG |
1191 | iwl_trans_free_tx_cmd(priv->trans, |
1192 | info->driver_data[1]); | |
a0eaad71 EG |
1193 | |
1194 | memset(&info->status, 0, sizeof(info->status)); | |
1195 | ||
1196 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
b8730b40 | 1197 | ctx->vif && |
a0eaad71 | 1198 | ctx->vif->type == NL80211_IFTYPE_STATION) { |
e755f882 JB |
1199 | /* block and stop all queues */ |
1200 | priv->passive_no_rx = true; | |
3c6acb61 JB |
1201 | IWL_DEBUG_TX_QUEUES(priv, |
1202 | "stop all queues: passive channel\n"); | |
e755f882 | 1203 | ieee80211_stop_queues(priv->hw); |
a0eaad71 EG |
1204 | |
1205 | IWL_DEBUG_TX_REPLY(priv, | |
1206 | "TXQ %d status %s (0x%08x) " | |
1207 | "rate_n_flags 0x%x retries %d\n", | |
1208 | txq_id, | |
1209 | iwl_get_tx_fail_reason(status), | |
1210 | status, | |
1211 | le32_to_cpu(tx_resp->rate_n_flags), | |
1212 | tx_resp->failure_frame); | |
1213 | ||
1214 | IWL_DEBUG_TX_REPLY(priv, | |
1215 | "FrameCnt = %d, idx=%d\n", | |
1216 | tx_resp->frame_count, cmd_index); | |
1217 | } | |
1218 | ||
1219 | /* check if BAR is needed */ | |
1220 | if (is_agg && !iwl_is_tx_success(status)) | |
1221 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1222 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
2eb81a40 | 1223 | tx_resp); |
a0eaad71 EG |
1224 | if (!is_agg) |
1225 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
1226 | ||
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 | 1239 | |
cfe41828 EG |
1240 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x)\n", txq_id, |
1241 | iwl_get_tx_fail_reason(status), status); | |
1c3fea82 | 1242 | |
cfe41828 EG |
1243 | IWL_DEBUG_TX_REPLY(priv, |
1244 | "\t\t\t\tinitial_rate 0x%x retries %d, idx=%d ssn=%d seq_ctl=0x%x\n", | |
1245 | le32_to_cpu(tx_resp->rate_n_flags), | |
1246 | tx_resp->failure_frame, | |
1247 | SEQ_TO_INDEX(sequence), ssn, | |
1248 | le16_to_cpu(tx_resp->seq_ctl)); | |
1249 | } | |
1c3fea82 | 1250 | |
a0eaad71 | 1251 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
2bfb5092 | 1252 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1253 | |
1254 | while (!skb_queue_empty(&skbs)) { | |
1255 | skb = __skb_dequeue(&skbs); | |
aeb0cf3c | 1256 | ieee80211_tx_status(priv->hw, skb); |
2c6ab7ff | 1257 | } |
8d801080 WYG |
1258 | } |
1259 | ||
74bcdb33 WYG |
1260 | /** |
1261 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
1262 | * | |
1263 | * Handles block-acknowledge notification from device, which reports success | |
1264 | * of frames sent via aggregation. | |
1265 | */ | |
73e686f3 JB |
1266 | void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
1267 | struct iwl_rx_cmd_buffer *rxb) | |
74bcdb33 WYG |
1268 | { |
1269 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
f8d7c1a1 | 1270 | struct iwl_compressed_ba_resp *ba_resp = (void *)pkt->data; |
74bcdb33 | 1271 | struct iwl_ht_agg *agg; |
a0eaad71 | 1272 | struct sk_buff_head reclaimed_skbs; |
a0eaad71 | 1273 | struct sk_buff *skb; |
74bcdb33 WYG |
1274 | int sta_id; |
1275 | int tid; | |
a0eaad71 | 1276 | int freed; |
74bcdb33 WYG |
1277 | |
1278 | /* "flow" corresponds to Tx queue */ | |
1279 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
1280 | ||
1281 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1282 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1283 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
1284 | ||
7d34a7d7 | 1285 | if (scd_flow >= priv->trans->trans_cfg->base_params->num_of_queues) { |
74bcdb33 WYG |
1286 | IWL_ERR(priv, |
1287 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
73e686f3 | 1288 | return; |
74bcdb33 WYG |
1289 | } |
1290 | ||
74bcdb33 WYG |
1291 | sta_id = ba_resp->sta_id; |
1292 | tid = ba_resp->tid; | |
04cf6824 | 1293 | agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 | 1294 | |
2bfb5092 | 1295 | spin_lock_bh(&priv->sta_lock); |
a0eaad71 | 1296 | |
76bc10fc EG |
1297 | if (unlikely(!agg->wait_for_ba)) { |
1298 | if (unlikely(ba_resp->bitmap)) | |
1299 | IWL_ERR(priv, "Received BA when not expected\n"); | |
2bfb5092 | 1300 | spin_unlock_bh(&priv->sta_lock); |
73e686f3 | 1301 | return; |
b561e827 | 1302 | } |
74bcdb33 | 1303 | |
27edb1ac EG |
1304 | if (unlikely(scd_flow != agg->txq_id)) { |
1305 | /* | |
1306 | * FIXME: this is a uCode bug which need to be addressed, | |
1307 | * log the information and return for now. | |
1308 | * Since it is can possibly happen very often and in order | |
1309 | * not to fill the syslog, don't use IWL_ERR or IWL_WARN | |
1310 | */ | |
1311 | IWL_DEBUG_TX_QUEUES(priv, | |
1312 | "Bad queue mapping txq_id=%d, agg_txq[sta:%d,tid:%d]=%d\n", | |
1313 | scd_flow, sta_id, tid, agg->txq_id); | |
2bfb5092 | 1314 | spin_unlock_bh(&priv->sta_lock); |
73e686f3 | 1315 | return; |
27edb1ac EG |
1316 | } |
1317 | ||
76bc10fc EG |
1318 | __skb_queue_head_init(&reclaimed_skbs); |
1319 | ||
1320 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1321 | * block-ack window (we assume that they've been successfully | |
1322 | * transmitted ... if not, it's too late anyway). */ | |
27edb1ac EG |
1323 | iwl_trans_reclaim(priv->trans, scd_flow, ba_resp_scd_ssn, |
1324 | &reclaimed_skbs); | |
74bcdb33 WYG |
1325 | |
1326 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
1327 | "sta_id = %d\n", | |
1328 | agg->wait_for_ba, | |
1329 | (u8 *) &ba_resp->sta_addr_lo32, | |
1330 | ba_resp->sta_id); | |
a0eaad71 | 1331 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
a46c3e42 | 1332 | "scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n", |
aca15f81 | 1333 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1334 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
a46c3e42 EG |
1335 | scd_flow, ba_resp_scd_ssn, ba_resp->txed, |
1336 | ba_resp->txed_2_done); | |
74bcdb33 | 1337 | |
a0eaad71 | 1338 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1339 | agg->wait_for_ba = false; |
a0eaad71 EG |
1340 | |
1341 | /* Sanity check values reported by uCode */ | |
1342 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1343 | IWL_DEBUG_TX_REPLY(priv, | |
1344 | "bogus sent(%d) and ack(%d) count\n", | |
1345 | ba_resp->txed, ba_resp->txed_2_done); | |
1346 | /* | |
1347 | * set txed_2_done = txed, | |
1348 | * so it won't impact rate scale | |
1349 | */ | |
1350 | ba_resp->txed = ba_resp->txed_2_done; | |
1351 | } | |
a0eaad71 | 1352 | |
04cf6824 | 1353 | priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
76bc10fc | 1354 | |
20addec6 | 1355 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1356 | freed = 0; |
74bcdb33 | 1357 | |
2c6ab7ff | 1358 | skb_queue_walk(&reclaimed_skbs, skb) { |
143582c6 JB |
1359 | struct ieee80211_hdr *hdr = (void *)skb->data; |
1360 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
69fdb710 | 1361 | |
a0eaad71 EG |
1362 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1363 | freed++; | |
1364 | else | |
1365 | WARN_ON_ONCE(1); | |
1366 | ||
59c647b6 | 1367 | iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]); |
1a849613 | 1368 | |
143582c6 JB |
1369 | memset(&info->status, 0, sizeof(info->status)); |
1370 | /* Packet was transmitted successfully, failures come as single | |
1371 | * frames because before failing a frame the firmware transmits | |
1372 | * it without aggregation at least once. | |
1373 | */ | |
1374 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1375 | ||
1a849613 | 1376 | if (freed == 1) { |
a0eaad71 EG |
1377 | /* this is the first skb we deliver in this batch */ |
1378 | /* put the rate scaling data there */ | |
1379 | info = IEEE80211_SKB_CB(skb); | |
1380 | memset(&info->status, 0, sizeof(info->status)); | |
a0eaad71 EG |
1381 | info->flags |= IEEE80211_TX_STAT_AMPDU; |
1382 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1383 | info->status.ampdu_len = ba_resp->txed; | |
1384 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1385 | info); | |
1386 | } | |
69fdb710 JB |
1387 | } |
1388 | ||
2bfb5092 | 1389 | spin_unlock_bh(&priv->sta_lock); |
2c6ab7ff JB |
1390 | |
1391 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1392 | skb = __skb_dequeue(&reclaimed_skbs); | |
aeb0cf3c | 1393 | ieee80211_tx_status(priv->hw, skb); |
2c6ab7ff | 1394 | } |
69fdb710 | 1395 | } |