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b305a080 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
fb4961db | 5 | * Copyright(c) 2008 - 2012 Intel Corporation. All rights reserved. |
b305a080 WYG |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #include <linux/kernel.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/sched.h> | |
a0eaad71 | 34 | #include <linux/ieee80211.h> |
b305a080 WYG |
35 | |
36 | #include "iwl-dev.h" | |
37 | #include "iwl-core.h" | |
b305a080 | 38 | #include "iwl-io.h" |
19e6cda0 | 39 | #include "iwl-agn-hw.h" |
8d801080 | 40 | #include "iwl-agn.h" |
47c1b496 | 41 | #include "iwl-trans.h" |
b305a080 | 42 | |
5c3d29fc DF |
43 | static void iwlagn_tx_cmd_protection(struct iwl_priv *priv, |
44 | struct ieee80211_tx_info *info, | |
45 | __le16 fc, __le32 *tx_flags) | |
46 | { | |
47 | if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS || | |
48 | info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT || | |
49 | info->flags & IEEE80211_TX_CTL_AMPDU) | |
50 | *tx_flags |= TX_CMD_FLG_PROT_REQUIRE_MSK; | |
51 | } | |
52 | ||
74bcdb33 WYG |
53 | /* |
54 | * handle build REPLY_TX command notification. | |
55 | */ | |
56 | static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv, | |
c6baf7fb JB |
57 | struct sk_buff *skb, |
58 | struct iwl_tx_cmd *tx_cmd, | |
59 | struct ieee80211_tx_info *info, | |
60 | struct ieee80211_hdr *hdr, u8 sta_id) | |
74bcdb33 WYG |
61 | { |
62 | __le16 fc = hdr->frame_control; | |
63 | __le32 tx_flags = tx_cmd->tx_flags; | |
64 | ||
65 | tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; | |
2c2def10 JB |
66 | |
67 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) | |
74bcdb33 | 68 | tx_flags |= TX_CMD_FLG_ACK_MSK; |
2c2def10 JB |
69 | else |
70 | tx_flags &= ~TX_CMD_FLG_ACK_MSK; | |
74bcdb33 | 71 | |
2c2def10 JB |
72 | if (ieee80211_is_probe_resp(fc)) |
73 | tx_flags |= TX_CMD_FLG_TSF_MSK; | |
74 | else if (ieee80211_is_back_req(fc)) | |
74bcdb33 | 75 | tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK; |
d44ae69e | 76 | else if (info->band == IEEE80211_BAND_2GHZ && |
38622419 DF |
77 | cfg(priv)->bt_params && |
78 | cfg(priv)->bt_params->advanced_bt_coexist && | |
d44ae69e JB |
79 | (ieee80211_is_auth(fc) || ieee80211_is_assoc_req(fc) || |
80 | ieee80211_is_reassoc_req(fc) || | |
81 | skb->protocol == cpu_to_be16(ETH_P_PAE))) | |
82 | tx_flags |= TX_CMD_FLG_IGNORE_BT; | |
74bcdb33 WYG |
83 | |
84 | ||
c6baf7fb | 85 | tx_cmd->sta_id = sta_id; |
74bcdb33 WYG |
86 | if (ieee80211_has_morefrags(fc)) |
87 | tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; | |
88 | ||
89 | if (ieee80211_is_data_qos(fc)) { | |
90 | u8 *qc = ieee80211_get_qos_ctl(hdr); | |
91 | tx_cmd->tid_tspec = qc[0] & 0xf; | |
92 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
93 | } else { | |
3d29dd9b | 94 | tx_cmd->tid_tspec = IWL_TID_NON_QOS; |
123877b8 WYG |
95 | if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) |
96 | tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; | |
97 | else | |
98 | tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; | |
74bcdb33 WYG |
99 | } |
100 | ||
5c3d29fc | 101 | iwlagn_tx_cmd_protection(priv, info, fc, &tx_flags); |
74bcdb33 WYG |
102 | |
103 | tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); | |
104 | if (ieee80211_is_mgmt(fc)) { | |
105 | if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc)) | |
106 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); | |
107 | else | |
108 | tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); | |
109 | } else { | |
110 | tx_cmd->timeout.pm_frame_timeout = 0; | |
111 | } | |
112 | ||
113 | tx_cmd->driver_txop = 0; | |
114 | tx_cmd->tx_flags = tx_flags; | |
115 | tx_cmd->next_frame_len = 0; | |
116 | } | |
117 | ||
74bcdb33 | 118 | static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv, |
c6baf7fb JB |
119 | struct iwl_tx_cmd *tx_cmd, |
120 | struct ieee80211_tx_info *info, | |
121 | __le16 fc) | |
74bcdb33 WYG |
122 | { |
123 | u32 rate_flags; | |
124 | int rate_idx; | |
125 | u8 rts_retry_limit; | |
126 | u8 data_retry_limit; | |
127 | u8 rate_plcp; | |
128 | ||
15b86bff | 129 | if (priv->wowlan) { |
f3129b73 WYG |
130 | rts_retry_limit = IWLAGN_LOW_RETRY_LIMIT; |
131 | data_retry_limit = IWLAGN_LOW_RETRY_LIMIT; | |
132 | } else { | |
133 | /* Set retry limit on RTS packets */ | |
134 | rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT; | |
135 | ||
136 | /* Set retry limit on DATA packets and Probe Responses*/ | |
137 | if (ieee80211_is_probe_resp(fc)) { | |
138 | data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT; | |
139 | rts_retry_limit = | |
140 | min(data_retry_limit, rts_retry_limit); | |
141 | } else if (ieee80211_is_back_req(fc)) | |
142 | data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT; | |
143 | else | |
144 | data_retry_limit = IWLAGN_DEFAULT_TX_RETRY; | |
145 | } | |
74bcdb33 | 146 | |
78558cb4 | 147 | tx_cmd->data_retry_limit = data_retry_limit; |
74bcdb33 WYG |
148 | tx_cmd->rts_retry_limit = rts_retry_limit; |
149 | ||
150 | /* DATA packets will use the uCode station table for rate/antenna | |
151 | * selection */ | |
152 | if (ieee80211_is_data(fc)) { | |
153 | tx_cmd->initial_rate_index = 0; | |
154 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
5ef15ccc | 155 | #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE |
4e308119 WYG |
156 | if (priv->tm_fixed_rate) { |
157 | /* | |
158 | * rate overwrite by testmode | |
159 | * we not only send lq command to change rate | |
160 | * we also re-enforce per data pkt base. | |
161 | */ | |
162 | tx_cmd->tx_flags &= ~TX_CMD_FLG_STA_RATE_MSK; | |
163 | memcpy(&tx_cmd->rate_n_flags, &priv->tm_fixed_rate, | |
164 | sizeof(tx_cmd->rate_n_flags)); | |
165 | } | |
c10e2c10 | 166 | #endif |
74bcdb33 | 167 | return; |
b8deb492 WYG |
168 | } else if (ieee80211_is_back_req(fc)) |
169 | tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; | |
74bcdb33 WYG |
170 | |
171 | /** | |
172 | * If the current TX rate stored in mac80211 has the MCS bit set, it's | |
173 | * not really a TX rate. Thus, we use the lowest supported rate for | |
174 | * this band. Also use the lowest supported rate if the stored rate | |
175 | * index is invalid. | |
176 | */ | |
177 | rate_idx = info->control.rates[0].idx; | |
178 | if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS || | |
179 | (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY)) | |
180 | rate_idx = rate_lowest_index(&priv->bands[info->band], | |
181 | info->control.sta); | |
182 | /* For 5 GHZ band, remap mac80211 rate indices into driver indices */ | |
183 | if (info->band == IEEE80211_BAND_5GHZ) | |
184 | rate_idx += IWL_FIRST_OFDM_RATE; | |
185 | /* Get PLCP rate for tx_cmd->rate_n_flags */ | |
186 | rate_plcp = iwl_rates[rate_idx].plcp; | |
187 | /* Zero out flags for this packet */ | |
188 | rate_flags = 0; | |
189 | ||
190 | /* Set CCK flag as needed */ | |
191 | if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) | |
192 | rate_flags |= RATE_MCS_CCK_MSK; | |
193 | ||
74bcdb33 | 194 | /* Set up antennas */ |
38622419 DF |
195 | if (cfg(priv)->bt_params && |
196 | cfg(priv)->bt_params->advanced_bt_coexist && | |
7cb1b088 | 197 | priv->bt_full_concurrent) { |
bee008b7 WYG |
198 | /* operated as 1x1 in full concurrency mode */ |
199 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
d6189124 | 200 | first_antenna(hw_params(priv).valid_tx_ant)); |
bee008b7 WYG |
201 | } else |
202 | priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant, | |
d6189124 | 203 | hw_params(priv).valid_tx_ant); |
74bcdb33 WYG |
204 | rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant); |
205 | ||
206 | /* Set the rate in the TX cmd */ | |
207 | tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags); | |
208 | } | |
209 | ||
210 | static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv *priv, | |
f2b69ef0 JB |
211 | struct ieee80211_tx_info *info, |
212 | struct iwl_tx_cmd *tx_cmd, | |
213 | struct sk_buff *skb_frag) | |
74bcdb33 WYG |
214 | { |
215 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
216 | ||
97359d12 JB |
217 | switch (keyconf->cipher) { |
218 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
219 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
220 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
221 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
222 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
223 | IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n"); | |
224 | break; | |
225 | ||
97359d12 | 226 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 227 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 228 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
229 | IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n"); |
230 | break; | |
231 | ||
97359d12 JB |
232 | case WLAN_CIPHER_SUITE_WEP104: |
233 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
234 | /* fall through */ | |
235 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
236 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
237 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
238 | ||
74bcdb33 WYG |
239 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
240 | ||
241 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
242 | "with key %d\n", keyconf->keyidx); | |
243 | break; | |
244 | ||
245 | default: | |
97359d12 | 246 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
247 | break; |
248 | } | |
249 | } | |
250 | ||
251 | /* | |
252 | * start REPLY_TX command process | |
253 | */ | |
254 | int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) | |
255 | { | |
256 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
257 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 258 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 259 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
dfa2bdba | 260 | struct iwl_device_cmd *dev_cmd = NULL; |
47c1b496 | 261 | struct iwl_tx_cmd *tx_cmd; |
74bcdb33 WYG |
262 | __le16 fc; |
263 | u8 hdr_len; | |
34b5321e EG |
264 | u16 len, seq_number = 0; |
265 | u8 sta_id, tid = IWL_MAX_TID_COUNT; | |
2e34034e | 266 | bool is_agg = false; |
74bcdb33 | 267 | |
c6baf7fb | 268 | if (info->control.vif) |
a194e324 JB |
269 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
270 | ||
845a9c0d | 271 | if (iwl_is_rfkill(priv->shrd)) { |
74bcdb33 | 272 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 273 | goto drop_unlock_priv; |
74bcdb33 WYG |
274 | } |
275 | ||
276 | fc = hdr->frame_control; | |
277 | ||
278 | #ifdef CONFIG_IWLWIFI_DEBUG | |
279 | if (ieee80211_is_auth(fc)) | |
280 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
281 | else if (ieee80211_is_assoc_req(fc)) | |
282 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
283 | else if (ieee80211_is_reassoc_req(fc)) | |
284 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
285 | #endif | |
286 | ||
79d3eef8 JB |
287 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
288 | struct iwl_wipan_noa_data *noa_data = | |
289 | rcu_dereference(priv->noa_data); | |
290 | ||
291 | if (noa_data && | |
292 | pskb_expand_head(skb, 0, noa_data->length, | |
293 | GFP_ATOMIC) == 0) { | |
294 | memcpy(skb_put(skb, noa_data->length), | |
295 | noa_data->data, noa_data->length); | |
296 | hdr = (struct ieee80211_hdr *)skb->data; | |
297 | } | |
298 | } | |
299 | ||
74bcdb33 WYG |
300 | hdr_len = ieee80211_hdrlen(fc); |
301 | ||
bfd36103 SG |
302 | /* For management frames use broadcast id to do not break aggregation */ |
303 | if (!ieee80211_is_data(fc)) | |
304 | sta_id = ctx->bcast_sta_id; | |
305 | else { | |
306 | /* Find index into station table for destination station */ | |
307 | sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta); | |
308 | if (sta_id == IWL_INVALID_STATION) { | |
309 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
310 | hdr->addr1); | |
e00cf3b9 | 311 | goto drop_unlock_priv; |
bfd36103 | 312 | } |
74bcdb33 WYG |
313 | } |
314 | ||
315 | IWL_DEBUG_TX(priv, "station Id %d\n", sta_id); | |
316 | ||
47c1b496 EG |
317 | if (info->control.sta) |
318 | sta_priv = (void *)info->control.sta->drv_priv; | |
74bcdb33 | 319 | |
67158b67 | 320 | if (sta_priv && sta_priv->asleep && |
02f2f1a9 | 321 | (info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER)) { |
74bcdb33 WYG |
322 | /* |
323 | * This sends an asynchronous command to the device, | |
324 | * but we can rely on it being processed before the | |
325 | * next frame is processed -- and the next frame to | |
326 | * this station is the one that will consume this | |
327 | * counter. | |
328 | * For now set the counter to just 1 since we do not | |
329 | * support uAPSD yet. | |
02f2f1a9 JB |
330 | * |
331 | * FIXME: If we get two non-bufferable frames one | |
332 | * after the other, we might only send out one of | |
333 | * them because this is racy. | |
74bcdb33 WYG |
334 | */ |
335 | iwl_sta_modify_sleep_tx_count(priv, sta_id, 1); | |
336 | } | |
337 | ||
08ecf104 EG |
338 | if (info->flags & IEEE80211_TX_CTL_AMPDU) |
339 | is_agg = true; | |
340 | ||
dfa2bdba EG |
341 | dev_cmd = kmem_cache_alloc(priv->tx_cmd_pool, GFP_ATOMIC); |
342 | ||
343 | if (unlikely(!dev_cmd)) | |
71cb9924 | 344 | goto drop_unlock_priv; |
74bcdb33 | 345 | |
dfa2bdba | 346 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
132f98c2 | 347 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 348 | |
74bcdb33 WYG |
349 | /* Total # bytes to be transmitted */ |
350 | len = (u16)skb->len; | |
351 | tx_cmd->len = cpu_to_le16(len); | |
352 | ||
353 | if (info->control.hw_key) | |
f2b69ef0 | 354 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb); |
74bcdb33 WYG |
355 | |
356 | /* TODO need this for burst mode later on */ | |
d44ae69e | 357 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 WYG |
358 | iwl_dbg_log_tx_data_frame(priv, len, hdr); |
359 | ||
360 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, fc); | |
361 | ||
362 | iwl_update_stats(priv, true, fc, len); | |
74bcdb33 | 363 | |
1a849613 EG |
364 | memset(&info->status, 0, sizeof(info->status)); |
365 | ||
2c452297 | 366 | info->driver_data[0] = ctx; |
dfa2bdba | 367 | info->driver_data[1] = dev_cmd; |
2c452297 | 368 | |
fa23cb04 | 369 | spin_lock(&priv->sta_lock); |
71cb9924 | 370 | |
34b5321e EG |
371 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
372 | u8 *qc = NULL; | |
373 | struct iwl_tid_data *tid_data; | |
374 | qc = ieee80211_get_qos_ctl(hdr); | |
375 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
376 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
377 | goto drop_unlock_sta; | |
04cf6824 | 378 | tid_data = &priv->tid_data[sta_id][tid]; |
34b5321e | 379 | |
97756fb1 EG |
380 | /* aggregation is on for this <sta,tid> */ |
381 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
382 | tid_data->agg.state != IWL_AGG_ON) { | |
383 | IWL_ERR(priv, "TX_CTL_AMPDU while not in AGG:" | |
384 | " Tx flags = 0x%08x, agg.state = %d", | |
385 | info->flags, tid_data->agg.state); | |
386 | IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d", | |
387 | sta_id, tid, SEQ_TO_SN(tid_data->seq_number)); | |
388 | goto drop_unlock_sta; | |
389 | } | |
390 | ||
b5326db8 EG |
391 | /* We can receive packets from the stack in IWL_AGG_{ON,OFF} |
392 | * only. Check this here. | |
393 | */ | |
394 | if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON && | |
395 | tid_data->agg.state != IWL_AGG_OFF, | |
396 | "Tx while agg.state = %d", tid_data->agg.state)) | |
397 | goto drop_unlock_sta; | |
398 | ||
34b5321e EG |
399 | seq_number = tid_data->seq_number; |
400 | seq_number &= IEEE80211_SCTL_SEQ; | |
401 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
402 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
403 | seq_number += 0x10; | |
404 | } | |
405 | ||
406 | /* Copy MAC header from skb into command buffer */ | |
407 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
408 | ||
409 | if (iwl_trans_tx(trans(priv), skb, dev_cmd, ctx->ctxid, sta_id, tid)) | |
47c1b496 | 410 | goto drop_unlock_sta; |
2c46f72e | 411 | |
34b5321e EG |
412 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc) && |
413 | !ieee80211_has_morefrags(fc)) | |
04cf6824 | 414 | priv->tid_data[sta_id][tid].seq_number = seq_number; |
34b5321e | 415 | |
fa23cb04 | 416 | spin_unlock(&priv->sta_lock); |
74bcdb33 | 417 | |
2e34034e JB |
418 | /* |
419 | * Avoid atomic ops if it isn't an associated client. | |
420 | * Also, if this is a packet for aggregation, don't | |
421 | * increase the counter because the ucode will stop | |
422 | * aggregation queues when their respective station | |
423 | * goes to sleep. | |
424 | */ | |
425 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
426 | atomic_inc(&sta_priv->pending_frames); |
427 | ||
74bcdb33 WYG |
428 | return 0; |
429 | ||
2c46f72e | 430 | drop_unlock_sta: |
dfa2bdba EG |
431 | if (dev_cmd) |
432 | kmem_cache_free(priv->tx_cmd_pool, dev_cmd); | |
fa23cb04 | 433 | spin_unlock(&priv->sta_lock); |
2c46f72e | 434 | drop_unlock_priv: |
74bcdb33 WYG |
435 | return -1; |
436 | } | |
437 | ||
bc237730 EG |
438 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
439 | struct ieee80211_sta *sta, u16 tid) | |
440 | { | |
bc237730 | 441 | struct iwl_tid_data *tid_data; |
bc237730 EG |
442 | int sta_id; |
443 | ||
444 | sta_id = iwl_sta_id(sta); | |
445 | ||
446 | if (sta_id == IWL_INVALID_STATION) { | |
447 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
448 | return -ENXIO; | |
449 | } | |
450 | ||
fa23cb04 | 451 | spin_lock_bh(&priv->sta_lock); |
bc237730 | 452 | |
04cf6824 | 453 | tid_data = &priv->tid_data[sta_id][tid]; |
bc237730 | 454 | |
04cf6824 | 455 | switch (priv->tid_data[sta_id][tid].agg.state) { |
bc237730 EG |
456 | case IWL_EMPTYING_HW_QUEUE_ADDBA: |
457 | /* | |
458 | * This can happen if the peer stops aggregation | |
459 | * again before we've had a chance to drain the | |
460 | * queue we selected previously, i.e. before the | |
461 | * session was really started completely. | |
462 | */ | |
463 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
464 | goto turn_off; | |
465 | case IWL_AGG_ON: | |
466 | break; | |
467 | default: | |
468 | IWL_WARN(priv, "Stopping AGG while state not ON " | |
469 | "or starting for %d on %d (%d)\n", sta_id, tid, | |
04cf6824 | 470 | priv->tid_data[sta_id][tid].agg.state); |
fa23cb04 | 471 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
472 | return 0; |
473 | } | |
474 | ||
475 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); | |
476 | ||
477 | /* There are still packets for this RA / TID in the HW */ | |
478 | if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
479 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
480 | "next_recl = %d", | |
481 | tid_data->agg.ssn, | |
482 | tid_data->next_reclaimed); | |
04cf6824 | 483 | priv->tid_data[sta_id][tid].agg.state = |
bc237730 | 484 | IWL_EMPTYING_HW_QUEUE_DELBA; |
fa23cb04 | 485 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
486 | return 0; |
487 | } | |
488 | ||
489 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d", | |
490 | tid_data->agg.ssn); | |
491 | turn_off: | |
04cf6824 | 492 | priv->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF; |
bc237730 | 493 | |
fa23cb04 | 494 | spin_unlock_bh(&priv->sta_lock); |
bc237730 EG |
495 | |
496 | iwl_trans_tx_agg_disable(trans(priv), sta_id, tid); | |
bc237730 | 497 | |
fdf426a3 | 498 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
bc237730 EG |
499 | |
500 | return 0; | |
501 | } | |
502 | ||
832f47e3 | 503 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 504 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 505 | { |
3c69b595 | 506 | struct iwl_tid_data *tid_data; |
74bcdb33 | 507 | int sta_id; |
74bcdb33 | 508 | int ret; |
74bcdb33 | 509 | |
5bc9890f WYG |
510 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
511 | sta->addr, tid); | |
74bcdb33 | 512 | |
619753ff | 513 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
514 | if (sta_id == IWL_INVALID_STATION) { |
515 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
516 | return -ENXIO; | |
517 | } | |
5f85a789 | 518 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
519 | return -EINVAL; |
520 | ||
04cf6824 | 521 | if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
522 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
523 | return -ENXIO; | |
524 | } | |
525 | ||
288712a6 | 526 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
527 | if (ret) |
528 | return ret; | |
529 | ||
fa23cb04 | 530 | spin_lock_bh(&priv->sta_lock); |
3c69b595 | 531 | |
04cf6824 | 532 | tid_data = &priv->tid_data[sta_id][tid]; |
3c69b595 EG |
533 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); |
534 | ||
535 | *ssn = tid_data->agg.ssn; | |
536 | ||
537 | ret = iwl_trans_tx_agg_alloc(trans(priv), sta_id, tid); | |
538 | if (ret) { | |
fa23cb04 | 539 | spin_unlock_bh(&priv->sta_lock); |
3c69b595 EG |
540 | return ret; |
541 | } | |
542 | ||
543 | if (*ssn == tid_data->next_reclaimed) { | |
544 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d", | |
545 | tid_data->agg.ssn); | |
546 | tid_data->agg.state = IWL_AGG_ON; | |
fdf426a3 | 547 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
3c69b595 EG |
548 | } else { |
549 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
550 | "next_reclaimed = %d", | |
551 | tid_data->agg.ssn, | |
552 | tid_data->next_reclaimed); | |
553 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
554 | } | |
555 | ||
fa23cb04 | 556 | spin_unlock_bh(&priv->sta_lock); |
288712a6 | 557 | |
74bcdb33 WYG |
558 | return ret; |
559 | } | |
560 | ||
822e8b2a EG |
561 | int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, |
562 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
563 | { | |
564 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; | |
565 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
822e8b2a EG |
566 | u16 ssn; |
567 | ||
568 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
569 | ||
fa23cb04 | 570 | spin_lock_bh(&priv->sta_lock); |
04cf6824 | 571 | ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; |
fa23cb04 | 572 | spin_unlock_bh(&priv->sta_lock); |
822e8b2a EG |
573 | |
574 | iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, sta_priv->sta_id, tid, | |
575 | buf_size, ssn); | |
576 | ||
577 | /* | |
578 | * If the limit is 0, then it wasn't initialised yet, | |
579 | * use the default. We can do that since we take the | |
580 | * minimum below, and we don't want to go above our | |
581 | * default due to hardware restrictions. | |
582 | */ | |
583 | if (sta_priv->max_agg_bufsize == 0) | |
584 | sta_priv->max_agg_bufsize = | |
585 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
586 | ||
587 | /* | |
588 | * Even though in theory the peer could have different | |
589 | * aggregation reorder buffer sizes for different sessions, | |
590 | * our ucode doesn't allow for that and has a global limit | |
591 | * for each station. Therefore, use the minimum of all the | |
592 | * aggregation sessions and our default value. | |
593 | */ | |
594 | sta_priv->max_agg_bufsize = | |
595 | min(sta_priv->max_agg_bufsize, buf_size); | |
596 | ||
b9ad70da | 597 | if (hw_params(priv).use_rts_for_aggregation) { |
822e8b2a EG |
598 | /* |
599 | * switch to RTS/CTS if it is the prefer protection | |
600 | * method for HT traffic | |
601 | */ | |
602 | ||
603 | sta_priv->lq_sta.lq.general_params.flags |= | |
604 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; | |
605 | } | |
606 | priv->agg_tids_count++; | |
607 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", | |
608 | priv->agg_tids_count); | |
609 | ||
610 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = | |
611 | sta_priv->max_agg_bufsize; | |
612 | ||
5fb8c182 | 613 | IWL_DEBUG_HT(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
822e8b2a EG |
614 | sta->addr, tid); |
615 | ||
616 | return iwl_send_lq_cmd(priv, ctx, | |
617 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); | |
618 | } | |
619 | ||
20addec6 EG |
620 | static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid) |
621 | { | |
04cf6824 | 622 | struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid]; |
fdf426a3 EG |
623 | enum iwl_rxon_context_id ctx; |
624 | struct ieee80211_vif *vif; | |
625 | u8 *addr; | |
20addec6 | 626 | |
fa23cb04 | 627 | lockdep_assert_held(&priv->sta_lock); |
20addec6 | 628 | |
fdf426a3 EG |
629 | addr = priv->stations[sta_id].sta.sta.addr; |
630 | ctx = priv->stations[sta_id].ctxid; | |
631 | vif = priv->contexts[ctx].vif; | |
632 | ||
04cf6824 | 633 | switch (priv->tid_data[sta_id][tid].agg.state) { |
20addec6 EG |
634 | case IWL_EMPTYING_HW_QUEUE_DELBA: |
635 | /* There are no packets for this RA / TID in the HW any more */ | |
636 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
637 | IWL_DEBUG_TX_QUEUES(priv, | |
638 | "Can continue DELBA flow ssn = next_recl =" | |
639 | " %d", tid_data->next_reclaimed); | |
640 | iwl_trans_tx_agg_disable(trans(priv), sta_id, tid); | |
641 | tid_data->agg.state = IWL_AGG_OFF; | |
fdf426a3 | 642 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
643 | } |
644 | break; | |
645 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
646 | /* There are no packets for this RA / TID in the HW any more */ | |
647 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
648 | IWL_DEBUG_TX_QUEUES(priv, | |
649 | "Can continue ADDBA flow ssn = next_recl =" | |
650 | " %d", tid_data->next_reclaimed); | |
651 | tid_data->agg.state = IWL_AGG_ON; | |
fdf426a3 | 652 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
653 | } |
654 | break; | |
655 | default: | |
656 | break; | |
657 | } | |
658 | } | |
659 | ||
2e34034e JB |
660 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
661 | struct iwl_rxon_context *ctx, | |
662 | const u8 *addr1) | |
74bcdb33 | 663 | { |
74bcdb33 WYG |
664 | struct ieee80211_sta *sta; |
665 | struct iwl_station_priv *sta_priv; | |
666 | ||
6db6340c | 667 | rcu_read_lock(); |
2e34034e | 668 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
669 | if (sta) { |
670 | sta_priv = (void *)sta->drv_priv; | |
671 | /* avoid atomic ops if this isn't a client */ | |
672 | if (sta_priv->client && | |
673 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
674 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
675 | } | |
6db6340c | 676 | rcu_read_unlock(); |
2e34034e JB |
677 | } |
678 | ||
a0eaad71 EG |
679 | /** |
680 | * translate ucode response to mac80211 tx status control values | |
681 | */ | |
04e1cabe | 682 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 683 | struct ieee80211_tx_info *info) |
2e34034e | 684 | { |
a0eaad71 | 685 | struct ieee80211_tx_rate *r = &info->control.rates[0]; |
74bcdb33 | 686 | |
a0eaad71 EG |
687 | info->antenna_sel_tx = |
688 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
689 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
690 | r->flags |= IEEE80211_TX_RC_MCS; | |
691 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
692 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
693 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
694 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
695 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
696 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
697 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
698 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
699 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
700 | } |
701 | ||
a0eaad71 EG |
702 | #ifdef CONFIG_IWLWIFI_DEBUG |
703 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 704 | { |
a0eaad71 EG |
705 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
706 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 707 | |
a0eaad71 EG |
708 | switch (status & TX_STATUS_MSK) { |
709 | case TX_STATUS_SUCCESS: | |
710 | return "SUCCESS"; | |
711 | TX_STATUS_POSTPONE(DELAY); | |
712 | TX_STATUS_POSTPONE(FEW_BYTES); | |
713 | TX_STATUS_POSTPONE(BT_PRIO); | |
714 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
715 | TX_STATUS_POSTPONE(CALC_TTAK); | |
716 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
717 | TX_STATUS_FAIL(SHORT_LIMIT); | |
718 | TX_STATUS_FAIL(LONG_LIMIT); | |
719 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
720 | TX_STATUS_FAIL(DRAIN_FLOW); | |
721 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
722 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
723 | TX_STATUS_FAIL(DEST_PS); | |
724 | TX_STATUS_FAIL(HOST_ABORTED); | |
725 | TX_STATUS_FAIL(BT_RETRY); | |
726 | TX_STATUS_FAIL(STA_INVALID); | |
727 | TX_STATUS_FAIL(FRAG_DROPPED); | |
728 | TX_STATUS_FAIL(TID_DISABLE); | |
729 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
730 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
731 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
732 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
733 | } |
734 | ||
a0eaad71 | 735 | return "UNKNOWN"; |
74bcdb33 | 736 | |
a0eaad71 EG |
737 | #undef TX_STATUS_FAIL |
738 | #undef TX_STATUS_POSTPONE | |
739 | } | |
740 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 741 | |
04e1cabe EG |
742 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
743 | { | |
744 | status &= AGG_TX_STATUS_MSK; | |
745 | ||
746 | switch (status) { | |
747 | case AGG_TX_STATE_UNDERRUN_MSK: | |
748 | priv->reply_agg_tx_stats.underrun++; | |
749 | break; | |
750 | case AGG_TX_STATE_BT_PRIO_MSK: | |
751 | priv->reply_agg_tx_stats.bt_prio++; | |
752 | break; | |
753 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
754 | priv->reply_agg_tx_stats.few_bytes++; | |
755 | break; | |
756 | case AGG_TX_STATE_ABORT_MSK: | |
757 | priv->reply_agg_tx_stats.abort++; | |
758 | break; | |
759 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
760 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
761 | break; | |
762 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
763 | priv->reply_agg_tx_stats.last_sent_try++; | |
764 | break; | |
765 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
766 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
767 | break; | |
768 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
769 | priv->reply_agg_tx_stats.scd_query++; | |
770 | break; | |
771 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
772 | priv->reply_agg_tx_stats.bad_crc32++; | |
773 | break; | |
774 | case AGG_TX_STATE_RESPONSE_MSK: | |
775 | priv->reply_agg_tx_stats.response++; | |
776 | break; | |
777 | case AGG_TX_STATE_DUMP_TX_MSK: | |
778 | priv->reply_agg_tx_stats.dump_tx++; | |
779 | break; | |
780 | case AGG_TX_STATE_DELAY_TX_MSK: | |
781 | priv->reply_agg_tx_stats.delay_tx++; | |
782 | break; | |
783 | default: | |
784 | priv->reply_agg_tx_stats.unknown++; | |
785 | break; | |
786 | } | |
787 | } | |
788 | ||
a0eaad71 EG |
789 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
790 | struct iwlagn_tx_resp *tx_resp) | |
791 | { | |
792 | struct agg_tx_status *frame_status = &tx_resp->status; | |
793 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
794 | IWLAGN_TX_RES_TID_POS; | |
795 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
796 | IWLAGN_TX_RES_RA_POS; | |
04cf6824 | 797 | struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
798 | u32 status = le16_to_cpu(tx_resp->status.status); |
799 | int i; | |
800 | ||
3d29dd9b EG |
801 | WARN_ON(tid == IWL_TID_NON_QOS); |
802 | ||
a0eaad71 EG |
803 | if (agg->wait_for_ba) |
804 | IWL_DEBUG_TX_REPLY(priv, | |
805 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 806 | |
a0eaad71 EG |
807 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
808 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
809 | ||
810 | /* | |
811 | * If the BT kill count is non-zero, we'll get this | |
812 | * notification again. | |
813 | */ | |
814 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
38622419 DF |
815 | cfg(priv)->bt_params && |
816 | cfg(priv)->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
817 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
818 | } | |
b2502698 | 819 | |
1a849613 EG |
820 | if (tx_resp->frame_count == 1) |
821 | return; | |
822 | ||
a0eaad71 EG |
823 | /* Construct bit-map of pending frames within Tx window */ |
824 | for (i = 0; i < tx_resp->frame_count; i++) { | |
825 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
74bcdb33 | 826 | |
a0eaad71 EG |
827 | if (status & AGG_TX_STATUS_MSK) |
828 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 829 | |
a0eaad71 EG |
830 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
831 | AGG_TX_STATE_ABORT_MSK)) | |
832 | continue; | |
833 | ||
834 | IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), " | |
835 | "try-count (0x%08x)\n", | |
836 | iwl_get_agg_tx_fail_reason(fstatus), | |
837 | fstatus & AGG_TX_STATUS_MSK, | |
838 | fstatus & AGG_TX_TRY_MSK); | |
74bcdb33 | 839 | } |
74bcdb33 WYG |
840 | } |
841 | ||
04e1cabe EG |
842 | #ifdef CONFIG_IWLWIFI_DEBUG |
843 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
844 | ||
845 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
846 | { | |
847 | status &= AGG_TX_STATUS_MSK; | |
848 | switch (status) { | |
849 | case AGG_TX_STATE_TRANSMITTED: | |
850 | return "SUCCESS"; | |
851 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
852 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
853 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
854 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
855 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
856 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
857 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
858 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
859 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
860 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
861 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
862 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
863 | } | |
864 | ||
865 | return "UNKNOWN"; | |
866 | } | |
867 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
868 | ||
a0eaad71 EG |
869 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
870 | { | |
871 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
872 | tx_resp->frame_count) & MAX_SN; | |
873 | } | |
74bcdb33 | 874 | |
04e1cabe EG |
875 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
876 | { | |
877 | status &= TX_STATUS_MSK; | |
878 | ||
879 | switch (status) { | |
880 | case TX_STATUS_POSTPONE_DELAY: | |
881 | priv->reply_tx_stats.pp_delay++; | |
882 | break; | |
883 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
884 | priv->reply_tx_stats.pp_few_bytes++; | |
885 | break; | |
886 | case TX_STATUS_POSTPONE_BT_PRIO: | |
887 | priv->reply_tx_stats.pp_bt_prio++; | |
888 | break; | |
889 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
890 | priv->reply_tx_stats.pp_quiet_period++; | |
891 | break; | |
892 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
893 | priv->reply_tx_stats.pp_calc_ttak++; | |
894 | break; | |
895 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
896 | priv->reply_tx_stats.int_crossed_retry++; | |
897 | break; | |
898 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
899 | priv->reply_tx_stats.short_limit++; | |
900 | break; | |
901 | case TX_STATUS_FAIL_LONG_LIMIT: | |
902 | priv->reply_tx_stats.long_limit++; | |
903 | break; | |
904 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
905 | priv->reply_tx_stats.fifo_underrun++; | |
906 | break; | |
907 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
908 | priv->reply_tx_stats.drain_flow++; | |
909 | break; | |
910 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
911 | priv->reply_tx_stats.rfkill_flush++; | |
912 | break; | |
913 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
914 | priv->reply_tx_stats.life_expire++; | |
915 | break; | |
916 | case TX_STATUS_FAIL_DEST_PS: | |
917 | priv->reply_tx_stats.dest_ps++; | |
918 | break; | |
919 | case TX_STATUS_FAIL_HOST_ABORTED: | |
920 | priv->reply_tx_stats.host_abort++; | |
921 | break; | |
922 | case TX_STATUS_FAIL_BT_RETRY: | |
923 | priv->reply_tx_stats.bt_retry++; | |
924 | break; | |
925 | case TX_STATUS_FAIL_STA_INVALID: | |
926 | priv->reply_tx_stats.sta_invalid++; | |
927 | break; | |
928 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
929 | priv->reply_tx_stats.frag_drop++; | |
930 | break; | |
931 | case TX_STATUS_FAIL_TID_DISABLE: | |
932 | priv->reply_tx_stats.tid_disable++; | |
933 | break; | |
934 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
935 | priv->reply_tx_stats.fifo_flush++; | |
936 | break; | |
937 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
938 | priv->reply_tx_stats.insuff_cf_poll++; | |
939 | break; | |
940 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
941 | priv->reply_tx_stats.fail_hw_drop++; | |
942 | break; | |
943 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
944 | priv->reply_tx_stats.sta_color_mismatch++; | |
945 | break; | |
946 | default: | |
947 | priv->reply_tx_stats.unknown++; | |
948 | break; | |
949 | } | |
950 | } | |
951 | ||
952 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
953 | struct ieee80211_tx_info *info, | |
954 | struct iwlagn_tx_resp *tx_resp, | |
955 | bool is_agg) | |
956 | { | |
957 | u16 status = le16_to_cpu(tx_resp->status.status); | |
958 | ||
959 | info->status.rates[0].count = tx_resp->failure_frame + 1; | |
960 | if (is_agg) | |
961 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
962 | info->flags |= iwl_tx_status_to_mac80211(status); | |
963 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
964 | info); | |
965 | if (!iwl_is_tx_success(status)) | |
966 | iwlagn_count_tx_err_status(priv, status); | |
967 | } | |
968 | ||
969 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
970 | u8 frame_count, u32 status) | |
971 | { | |
972 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
973 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
974 | if (!test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) | |
1ee158d8 | 975 | queue_work(priv->workqueue, &priv->tx_flush); |
04e1cabe EG |
976 | } |
977 | } | |
978 | ||
48a2d66f | 979 | int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
247c61d6 | 980 | struct iwl_device_cmd *cmd) |
74bcdb33 | 981 | { |
a0eaad71 EG |
982 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
983 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
984 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 985 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
f8d7c1a1 | 986 | struct iwlagn_tx_resp *tx_resp = (void *)pkt->data; |
a0eaad71 EG |
987 | struct ieee80211_hdr *hdr; |
988 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 989 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
990 | int tid; |
991 | int sta_id; | |
992 | int freed; | |
74bcdb33 | 993 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
994 | struct sk_buff_head skbs; |
995 | struct sk_buff *skb; | |
996 | struct iwl_rxon_context *ctx; | |
8ad71bef | 997 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
d0eb6334 | 998 | |
a0eaad71 EG |
999 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
1000 | IWLAGN_TX_RES_TID_POS; | |
1001 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
1002 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 1003 | |
fa23cb04 | 1004 | spin_lock(&priv->sta_lock); |
9decde95 | 1005 | |
8ad71bef | 1006 | if (is_agg) |
a0eaad71 EG |
1007 | iwl_rx_reply_tx_agg(priv, tx_resp); |
1008 | ||
2c6ab7ff JB |
1009 | __skb_queue_head_init(&skbs); |
1010 | ||
a0eaad71 | 1011 | if (tx_resp->frame_count == 1) { |
eb9a372a EG |
1012 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
1013 | next_reclaimed = SEQ_TO_SN(next_reclaimed + 0x10); | |
1014 | ||
1015 | if (is_agg) { | |
1016 | /* If this is an aggregation queue, we can rely on the | |
1017 | * ssn since the wifi sequence number corresponds to | |
1018 | * the index in the TFD ring (%256). | |
1019 | * The seq_ctl is the sequence control of the packet | |
1020 | * to which this Tx response relates. But if there is a | |
1021 | * hole in the bitmap of the BA we received, this Tx | |
1022 | * response may allow to reclaim the hole and all the | |
1023 | * subsequent packets that were already acked. | |
1024 | * In that case, seq_ctl != ssn, and the next packet | |
1025 | * to be reclaimed will be ssn and not seq_ctl. | |
1026 | */ | |
1027 | next_reclaimed = ssn; | |
1028 | } | |
1029 | ||
3d29dd9b EG |
1030 | if (tid != IWL_TID_NON_QOS) { |
1031 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1032 | next_reclaimed; | |
1033 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d", | |
1034 | next_reclaimed); | |
1035 | } | |
eb9a372a | 1036 | |
a0eaad71 | 1037 | /*we can free until ssn % q.n_bd not inclusive */ |
76bc10fc EG |
1038 | WARN_ON(iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id, |
1039 | ssn, status, &skbs)); | |
20addec6 | 1040 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1041 | freed = 0; |
2c6ab7ff JB |
1042 | |
1043 | /* process frames */ | |
1044 | skb_queue_walk(&skbs, skb) { | |
a0eaad71 EG |
1045 | hdr = (struct ieee80211_hdr *)skb->data; |
1046 | ||
1047 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
1048 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
1049 | ||
1050 | info = IEEE80211_SKB_CB(skb); | |
1051 | ctx = info->driver_data[0]; | |
dfa2bdba EG |
1052 | kmem_cache_free(priv->tx_cmd_pool, |
1053 | (info->driver_data[1])); | |
a0eaad71 EG |
1054 | |
1055 | memset(&info->status, 0, sizeof(info->status)); | |
1056 | ||
1057 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
1058 | iwl_is_associated_ctx(ctx) && ctx->vif && | |
1059 | ctx->vif->type == NL80211_IFTYPE_STATION) { | |
1060 | ctx->last_tx_rejected = true; | |
81a3de1c EG |
1061 | iwl_trans_stop_queue(trans(priv), txq_id, |
1062 | "Tx on passive channel"); | |
a0eaad71 EG |
1063 | |
1064 | IWL_DEBUG_TX_REPLY(priv, | |
1065 | "TXQ %d status %s (0x%08x) " | |
1066 | "rate_n_flags 0x%x retries %d\n", | |
1067 | txq_id, | |
1068 | iwl_get_tx_fail_reason(status), | |
1069 | status, | |
1070 | le32_to_cpu(tx_resp->rate_n_flags), | |
1071 | tx_resp->failure_frame); | |
1072 | ||
1073 | IWL_DEBUG_TX_REPLY(priv, | |
1074 | "FrameCnt = %d, idx=%d\n", | |
1075 | tx_resp->frame_count, cmd_index); | |
1076 | } | |
1077 | ||
1078 | /* check if BAR is needed */ | |
1079 | if (is_agg && !iwl_is_tx_success(status)) | |
1080 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1081 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
1082 | tx_resp, is_agg); | |
1083 | if (!is_agg) | |
1084 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
1085 | ||
a0eaad71 EG |
1086 | freed++; |
1087 | } | |
74bcdb33 | 1088 | |
a0eaad71 | 1089 | WARN_ON(!is_agg && freed != 1); |
a0eaad71 | 1090 | } |
8d801080 | 1091 | |
a0eaad71 | 1092 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
fa23cb04 | 1093 | spin_unlock(&priv->sta_lock); |
2c6ab7ff JB |
1094 | |
1095 | while (!skb_queue_empty(&skbs)) { | |
1096 | skb = __skb_dequeue(&skbs); | |
1097 | ieee80211_tx_status(priv->hw, skb); | |
1098 | } | |
1099 | ||
247c61d6 | 1100 | return 0; |
8d801080 WYG |
1101 | } |
1102 | ||
74bcdb33 WYG |
1103 | /** |
1104 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
1105 | * | |
1106 | * Handles block-acknowledge notification from device, which reports success | |
1107 | * of frames sent via aggregation. | |
1108 | */ | |
247c61d6 | 1109 | int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
48a2d66f | 1110 | struct iwl_rx_cmd_buffer *rxb, |
247c61d6 | 1111 | struct iwl_device_cmd *cmd) |
74bcdb33 WYG |
1112 | { |
1113 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
f8d7c1a1 | 1114 | struct iwl_compressed_ba_resp *ba_resp = (void *)pkt->data; |
74bcdb33 | 1115 | struct iwl_ht_agg *agg; |
a0eaad71 EG |
1116 | struct sk_buff_head reclaimed_skbs; |
1117 | struct ieee80211_tx_info *info; | |
1118 | struct ieee80211_hdr *hdr; | |
1119 | struct sk_buff *skb; | |
74bcdb33 WYG |
1120 | int sta_id; |
1121 | int tid; | |
a0eaad71 | 1122 | int freed; |
74bcdb33 WYG |
1123 | |
1124 | /* "flow" corresponds to Tx queue */ | |
1125 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
1126 | ||
1127 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1128 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1129 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
1130 | ||
d6189124 | 1131 | if (scd_flow >= hw_params(priv).max_txq_num) { |
74bcdb33 WYG |
1132 | IWL_ERR(priv, |
1133 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
247c61d6 | 1134 | return 0; |
74bcdb33 WYG |
1135 | } |
1136 | ||
74bcdb33 WYG |
1137 | sta_id = ba_resp->sta_id; |
1138 | tid = ba_resp->tid; | |
04cf6824 | 1139 | agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 | 1140 | |
fa23cb04 | 1141 | spin_lock(&priv->sta_lock); |
a0eaad71 | 1142 | |
76bc10fc EG |
1143 | if (unlikely(!agg->wait_for_ba)) { |
1144 | if (unlikely(ba_resp->bitmap)) | |
1145 | IWL_ERR(priv, "Received BA when not expected\n"); | |
fa23cb04 | 1146 | spin_unlock(&priv->sta_lock); |
247c61d6 | 1147 | return 0; |
b561e827 | 1148 | } |
74bcdb33 | 1149 | |
76bc10fc EG |
1150 | __skb_queue_head_init(&reclaimed_skbs); |
1151 | ||
1152 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1153 | * block-ack window (we assume that they've been successfully | |
1154 | * transmitted ... if not, it's too late anyway). */ | |
1155 | if (iwl_trans_reclaim(trans(priv), sta_id, tid, scd_flow, | |
1156 | ba_resp_scd_ssn, 0, &reclaimed_skbs)) { | |
fa23cb04 | 1157 | spin_unlock(&priv->sta_lock); |
247c61d6 | 1158 | return 0; |
a0eaad71 | 1159 | } |
74bcdb33 WYG |
1160 | |
1161 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
1162 | "sta_id = %d\n", | |
1163 | agg->wait_for_ba, | |
1164 | (u8 *) &ba_resp->sta_addr_lo32, | |
1165 | ba_resp->sta_id); | |
a0eaad71 EG |
1166 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
1167 | "scd_flow = %d, scd_ssn = %d\n", | |
aca15f81 | 1168 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1169 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
b88f5be0 | 1170 | scd_flow, ba_resp_scd_ssn); |
74bcdb33 | 1171 | |
a0eaad71 | 1172 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1173 | agg->wait_for_ba = false; |
a0eaad71 EG |
1174 | |
1175 | /* Sanity check values reported by uCode */ | |
1176 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1177 | IWL_DEBUG_TX_REPLY(priv, | |
1178 | "bogus sent(%d) and ack(%d) count\n", | |
1179 | ba_resp->txed, ba_resp->txed_2_done); | |
1180 | /* | |
1181 | * set txed_2_done = txed, | |
1182 | * so it won't impact rate scale | |
1183 | */ | |
1184 | ba_resp->txed = ba_resp->txed_2_done; | |
1185 | } | |
1186 | IWL_DEBUG_HT(priv, "agg frames sent:%d, acked:%d\n", | |
1187 | ba_resp->txed, ba_resp->txed_2_done); | |
1188 | ||
04cf6824 | 1189 | priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
76bc10fc | 1190 | |
20addec6 | 1191 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 | 1192 | freed = 0; |
74bcdb33 | 1193 | |
2c6ab7ff | 1194 | skb_queue_walk(&reclaimed_skbs, skb) { |
a0eaad71 | 1195 | hdr = (struct ieee80211_hdr *)skb->data; |
69fdb710 | 1196 | |
a0eaad71 EG |
1197 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1198 | freed++; | |
1199 | else | |
1200 | WARN_ON_ONCE(1); | |
1201 | ||
1a849613 EG |
1202 | info = IEEE80211_SKB_CB(skb); |
1203 | kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1])); | |
1204 | ||
1205 | if (freed == 1) { | |
a0eaad71 EG |
1206 | /* this is the first skb we deliver in this batch */ |
1207 | /* put the rate scaling data there */ | |
1208 | info = IEEE80211_SKB_CB(skb); | |
1209 | memset(&info->status, 0, sizeof(info->status)); | |
1210 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1211 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1212 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1213 | info->status.ampdu_len = ba_resp->txed; | |
1214 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1215 | info); | |
1216 | } | |
69fdb710 JB |
1217 | } |
1218 | ||
fa23cb04 | 1219 | spin_unlock(&priv->sta_lock); |
2c6ab7ff JB |
1220 | |
1221 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
1222 | skb = __skb_dequeue(&reclaimed_skbs); | |
1223 | ieee80211_tx_status(priv->hw, skb); | |
1224 | } | |
1225 | ||
247c61d6 | 1226 | return 0; |
69fdb710 | 1227 | } |