Commit | Line | Data |
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b305a080 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
901069c7 | 5 | * Copyright(c) 2008 - 2011 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 | ||
f3129b73 WYG |
129 | if (priv->shrd->wowlan) { |
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, | |
211 | struct ieee80211_tx_info *info, | |
212 | struct iwl_tx_cmd *tx_cmd, | |
213 | struct sk_buff *skb_frag, | |
214 | int sta_id) | |
215 | { | |
216 | struct ieee80211_key_conf *keyconf = info->control.hw_key; | |
217 | ||
97359d12 JB |
218 | switch (keyconf->cipher) { |
219 | case WLAN_CIPHER_SUITE_CCMP: | |
74bcdb33 WYG |
220 | tx_cmd->sec_ctl = TX_CMD_SEC_CCM; |
221 | memcpy(tx_cmd->key, keyconf->key, keyconf->keylen); | |
222 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
223 | tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; | |
224 | IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n"); | |
225 | break; | |
226 | ||
97359d12 | 227 | case WLAN_CIPHER_SUITE_TKIP: |
74bcdb33 | 228 | tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; |
523b02ea | 229 | ieee80211_get_tkip_p2k(keyconf, skb_frag, tx_cmd->key); |
74bcdb33 WYG |
230 | IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n"); |
231 | break; | |
232 | ||
97359d12 JB |
233 | case WLAN_CIPHER_SUITE_WEP104: |
234 | tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; | |
235 | /* fall through */ | |
236 | case WLAN_CIPHER_SUITE_WEP40: | |
74bcdb33 WYG |
237 | tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | |
238 | (keyconf->keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); | |
239 | ||
74bcdb33 WYG |
240 | memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen); |
241 | ||
242 | IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption " | |
243 | "with key %d\n", keyconf->keyidx); | |
244 | break; | |
245 | ||
246 | default: | |
97359d12 | 247 | IWL_ERR(priv, "Unknown encode cipher %x\n", keyconf->cipher); |
74bcdb33 WYG |
248 | break; |
249 | } | |
250 | } | |
251 | ||
252 | /* | |
253 | * start REPLY_TX command process | |
254 | */ | |
255 | int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) | |
256 | { | |
257 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; | |
258 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); | |
74bcdb33 | 259 | struct iwl_station_priv *sta_priv = NULL; |
a194e324 | 260 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
dfa2bdba | 261 | struct iwl_device_cmd *dev_cmd = NULL; |
47c1b496 | 262 | struct iwl_tx_cmd *tx_cmd; |
47c1b496 | 263 | |
74bcdb33 WYG |
264 | __le16 fc; |
265 | u8 hdr_len; | |
34b5321e EG |
266 | u16 len, seq_number = 0; |
267 | u8 sta_id, tid = IWL_MAX_TID_COUNT; | |
74bcdb33 | 268 | unsigned long flags; |
2e34034e | 269 | bool is_agg = false; |
74bcdb33 | 270 | |
c6baf7fb | 271 | if (info->control.vif) |
a194e324 JB |
272 | ctx = iwl_rxon_ctx_from_vif(info->control.vif); |
273 | ||
10b15e6f | 274 | spin_lock_irqsave(&priv->shrd->lock, flags); |
845a9c0d | 275 | if (iwl_is_rfkill(priv->shrd)) { |
74bcdb33 | 276 | IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n"); |
2c46f72e | 277 | goto drop_unlock_priv; |
74bcdb33 WYG |
278 | } |
279 | ||
280 | fc = hdr->frame_control; | |
281 | ||
282 | #ifdef CONFIG_IWLWIFI_DEBUG | |
283 | if (ieee80211_is_auth(fc)) | |
284 | IWL_DEBUG_TX(priv, "Sending AUTH frame\n"); | |
285 | else if (ieee80211_is_assoc_req(fc)) | |
286 | IWL_DEBUG_TX(priv, "Sending ASSOC frame\n"); | |
287 | else if (ieee80211_is_reassoc_req(fc)) | |
288 | IWL_DEBUG_TX(priv, "Sending REASSOC frame\n"); | |
289 | #endif | |
290 | ||
79d3eef8 JB |
291 | if (unlikely(ieee80211_is_probe_resp(fc))) { |
292 | struct iwl_wipan_noa_data *noa_data = | |
293 | rcu_dereference(priv->noa_data); | |
294 | ||
295 | if (noa_data && | |
296 | pskb_expand_head(skb, 0, noa_data->length, | |
297 | GFP_ATOMIC) == 0) { | |
298 | memcpy(skb_put(skb, noa_data->length), | |
299 | noa_data->data, noa_data->length); | |
300 | hdr = (struct ieee80211_hdr *)skb->data; | |
301 | } | |
302 | } | |
303 | ||
74bcdb33 WYG |
304 | hdr_len = ieee80211_hdrlen(fc); |
305 | ||
bfd36103 SG |
306 | /* For management frames use broadcast id to do not break aggregation */ |
307 | if (!ieee80211_is_data(fc)) | |
308 | sta_id = ctx->bcast_sta_id; | |
309 | else { | |
310 | /* Find index into station table for destination station */ | |
311 | sta_id = iwl_sta_id_or_broadcast(priv, ctx, info->control.sta); | |
312 | if (sta_id == IWL_INVALID_STATION) { | |
313 | IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n", | |
314 | hdr->addr1); | |
e00cf3b9 | 315 | goto drop_unlock_priv; |
bfd36103 | 316 | } |
74bcdb33 WYG |
317 | } |
318 | ||
319 | IWL_DEBUG_TX(priv, "station Id %d\n", sta_id); | |
320 | ||
47c1b496 EG |
321 | if (info->control.sta) |
322 | sta_priv = (void *)info->control.sta->drv_priv; | |
74bcdb33 | 323 | |
67158b67 | 324 | if (sta_priv && sta_priv->asleep && |
47086fc5 | 325 | (info->flags & IEEE80211_TX_CTL_POLL_RESPONSE)) { |
74bcdb33 WYG |
326 | /* |
327 | * This sends an asynchronous command to the device, | |
328 | * but we can rely on it being processed before the | |
329 | * next frame is processed -- and the next frame to | |
330 | * this station is the one that will consume this | |
331 | * counter. | |
332 | * For now set the counter to just 1 since we do not | |
333 | * support uAPSD yet. | |
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 | ||
10b15e6f | 341 | /* irqs already disabled/saved above when locking priv->shrd->lock */ |
f39c95e8 | 342 | spin_lock(&priv->shrd->sta_lock); |
9c5ac091 | 343 | |
dfa2bdba EG |
344 | dev_cmd = kmem_cache_alloc(priv->tx_cmd_pool, GFP_ATOMIC); |
345 | ||
346 | if (unlikely(!dev_cmd)) | |
2c46f72e | 347 | goto drop_unlock_sta; |
74bcdb33 | 348 | |
dfa2bdba | 349 | memset(dev_cmd, 0, sizeof(*dev_cmd)); |
132f98c2 | 350 | tx_cmd = (struct iwl_tx_cmd *) dev_cmd->payload; |
dfa2bdba | 351 | |
74bcdb33 WYG |
352 | /* Total # bytes to be transmitted */ |
353 | len = (u16)skb->len; | |
354 | tx_cmd->len = cpu_to_le16(len); | |
355 | ||
356 | if (info->control.hw_key) | |
357 | iwlagn_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id); | |
358 | ||
359 | /* TODO need this for burst mode later on */ | |
d44ae69e | 360 | iwlagn_tx_cmd_build_basic(priv, skb, tx_cmd, info, hdr, sta_id); |
74bcdb33 WYG |
361 | iwl_dbg_log_tx_data_frame(priv, len, hdr); |
362 | ||
363 | iwlagn_tx_cmd_build_rate(priv, tx_cmd, info, fc); | |
364 | ||
365 | iwl_update_stats(priv, true, fc, len); | |
74bcdb33 | 366 | |
1a849613 EG |
367 | memset(&info->status, 0, sizeof(info->status)); |
368 | ||
2c452297 | 369 | info->driver_data[0] = ctx; |
dfa2bdba | 370 | info->driver_data[1] = dev_cmd; |
2c452297 | 371 | |
34b5321e EG |
372 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc)) { |
373 | u8 *qc = NULL; | |
374 | struct iwl_tid_data *tid_data; | |
375 | qc = ieee80211_get_qos_ctl(hdr); | |
376 | tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; | |
377 | if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT)) | |
378 | goto drop_unlock_sta; | |
04cf6824 | 379 | tid_data = &priv->tid_data[sta_id][tid]; |
34b5321e | 380 | |
97756fb1 EG |
381 | /* aggregation is on for this <sta,tid> */ |
382 | if (info->flags & IEEE80211_TX_CTL_AMPDU && | |
383 | tid_data->agg.state != IWL_AGG_ON) { | |
384 | IWL_ERR(priv, "TX_CTL_AMPDU while not in AGG:" | |
385 | " Tx flags = 0x%08x, agg.state = %d", | |
386 | info->flags, tid_data->agg.state); | |
387 | IWL_ERR(priv, "sta_id = %d, tid = %d seq_num = %d", | |
388 | sta_id, tid, SEQ_TO_SN(tid_data->seq_number)); | |
389 | goto drop_unlock_sta; | |
390 | } | |
391 | ||
b5326db8 EG |
392 | /* We can receive packets from the stack in IWL_AGG_{ON,OFF} |
393 | * only. Check this here. | |
394 | */ | |
395 | if (WARN_ONCE(tid_data->agg.state != IWL_AGG_ON && | |
396 | tid_data->agg.state != IWL_AGG_OFF, | |
397 | "Tx while agg.state = %d", tid_data->agg.state)) | |
398 | goto drop_unlock_sta; | |
399 | ||
34b5321e EG |
400 | seq_number = tid_data->seq_number; |
401 | seq_number &= IEEE80211_SCTL_SEQ; | |
402 | hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG); | |
403 | hdr->seq_ctrl |= cpu_to_le16(seq_number); | |
404 | seq_number += 0x10; | |
405 | } | |
406 | ||
407 | /* Copy MAC header from skb into command buffer */ | |
408 | memcpy(tx_cmd->hdr, hdr, hdr_len); | |
409 | ||
410 | if (iwl_trans_tx(trans(priv), skb, dev_cmd, ctx->ctxid, sta_id, tid)) | |
47c1b496 | 411 | goto drop_unlock_sta; |
2c46f72e | 412 | |
34b5321e EG |
413 | if (ieee80211_is_data_qos(fc) && !ieee80211_is_qos_nullfunc(fc) && |
414 | !ieee80211_has_morefrags(fc)) | |
04cf6824 | 415 | priv->tid_data[sta_id][tid].seq_number = seq_number; |
34b5321e | 416 | |
f39c95e8 | 417 | spin_unlock(&priv->shrd->sta_lock); |
10b15e6f | 418 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
74bcdb33 | 419 | |
2e34034e JB |
420 | /* |
421 | * Avoid atomic ops if it isn't an associated client. | |
422 | * Also, if this is a packet for aggregation, don't | |
423 | * increase the counter because the ucode will stop | |
424 | * aggregation queues when their respective station | |
425 | * goes to sleep. | |
426 | */ | |
427 | if (sta_priv && sta_priv->client && !is_agg) | |
74bcdb33 WYG |
428 | atomic_inc(&sta_priv->pending_frames); |
429 | ||
74bcdb33 WYG |
430 | return 0; |
431 | ||
2c46f72e | 432 | drop_unlock_sta: |
dfa2bdba EG |
433 | if (dev_cmd) |
434 | kmem_cache_free(priv->tx_cmd_pool, dev_cmd); | |
f39c95e8 | 435 | spin_unlock(&priv->shrd->sta_lock); |
2c46f72e | 436 | drop_unlock_priv: |
10b15e6f | 437 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
74bcdb33 WYG |
438 | return -1; |
439 | } | |
440 | ||
bc237730 EG |
441 | int iwlagn_tx_agg_stop(struct iwl_priv *priv, struct ieee80211_vif *vif, |
442 | struct ieee80211_sta *sta, u16 tid) | |
443 | { | |
bc237730 EG |
444 | struct iwl_tid_data *tid_data; |
445 | unsigned long flags; | |
446 | int sta_id; | |
447 | ||
448 | sta_id = iwl_sta_id(sta); | |
449 | ||
450 | if (sta_id == IWL_INVALID_STATION) { | |
451 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
452 | return -ENXIO; | |
453 | } | |
454 | ||
455 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
456 | ||
04cf6824 | 457 | tid_data = &priv->tid_data[sta_id][tid]; |
bc237730 | 458 | |
04cf6824 | 459 | switch (priv->tid_data[sta_id][tid].agg.state) { |
bc237730 EG |
460 | case IWL_EMPTYING_HW_QUEUE_ADDBA: |
461 | /* | |
462 | * This can happen if the peer stops aggregation | |
463 | * again before we've had a chance to drain the | |
464 | * queue we selected previously, i.e. before the | |
465 | * session was really started completely. | |
466 | */ | |
467 | IWL_DEBUG_HT(priv, "AGG stop before setup done\n"); | |
468 | goto turn_off; | |
469 | case IWL_AGG_ON: | |
470 | break; | |
471 | default: | |
472 | IWL_WARN(priv, "Stopping AGG while state not ON " | |
473 | "or starting for %d on %d (%d)\n", sta_id, tid, | |
04cf6824 | 474 | priv->tid_data[sta_id][tid].agg.state); |
bc237730 EG |
475 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
476 | return 0; | |
477 | } | |
478 | ||
479 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); | |
480 | ||
481 | /* There are still packets for this RA / TID in the HW */ | |
482 | if (tid_data->agg.ssn != tid_data->next_reclaimed) { | |
483 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
484 | "next_recl = %d", | |
485 | tid_data->agg.ssn, | |
486 | tid_data->next_reclaimed); | |
04cf6824 | 487 | priv->tid_data[sta_id][tid].agg.state = |
bc237730 EG |
488 | IWL_EMPTYING_HW_QUEUE_DELBA; |
489 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
490 | return 0; | |
491 | } | |
492 | ||
493 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d", | |
494 | tid_data->agg.ssn); | |
495 | turn_off: | |
04cf6824 | 496 | priv->tid_data[sta_id][tid].agg.state = IWL_AGG_OFF; |
bc237730 EG |
497 | |
498 | /* do not restore/save irqs */ | |
499 | spin_unlock(&priv->shrd->sta_lock); | |
500 | spin_lock(&priv->shrd->lock); | |
501 | ||
502 | iwl_trans_tx_agg_disable(trans(priv), sta_id, tid); | |
503 | ||
504 | spin_unlock_irqrestore(&priv->shrd->lock, flags); | |
505 | ||
fdf426a3 | 506 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
bc237730 EG |
507 | |
508 | return 0; | |
509 | } | |
510 | ||
832f47e3 | 511 | int iwlagn_tx_agg_start(struct iwl_priv *priv, struct ieee80211_vif *vif, |
619753ff | 512 | struct ieee80211_sta *sta, u16 tid, u16 *ssn) |
74bcdb33 | 513 | { |
3c69b595 EG |
514 | struct iwl_tid_data *tid_data; |
515 | unsigned long flags; | |
74bcdb33 | 516 | int sta_id; |
74bcdb33 | 517 | int ret; |
74bcdb33 | 518 | |
5bc9890f WYG |
519 | IWL_DEBUG_HT(priv, "TX AGG request on ra = %pM tid = %d\n", |
520 | sta->addr, tid); | |
74bcdb33 | 521 | |
619753ff | 522 | sta_id = iwl_sta_id(sta); |
74bcdb33 WYG |
523 | if (sta_id == IWL_INVALID_STATION) { |
524 | IWL_ERR(priv, "Start AGG on invalid station\n"); | |
525 | return -ENXIO; | |
526 | } | |
5f85a789 | 527 | if (unlikely(tid >= IWL_MAX_TID_COUNT)) |
74bcdb33 WYG |
528 | return -EINVAL; |
529 | ||
04cf6824 | 530 | if (priv->tid_data[sta_id][tid].agg.state != IWL_AGG_OFF) { |
74bcdb33 WYG |
531 | IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n"); |
532 | return -ENXIO; | |
533 | } | |
534 | ||
288712a6 | 535 | ret = iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); |
74bcdb33 WYG |
536 | if (ret) |
537 | return ret; | |
538 | ||
3c69b595 EG |
539 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
540 | ||
04cf6824 | 541 | tid_data = &priv->tid_data[sta_id][tid]; |
3c69b595 EG |
542 | tid_data->agg.ssn = SEQ_TO_SN(tid_data->seq_number); |
543 | ||
544 | *ssn = tid_data->agg.ssn; | |
545 | ||
546 | ret = iwl_trans_tx_agg_alloc(trans(priv), sta_id, tid); | |
547 | if (ret) { | |
548 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
549 | return ret; | |
550 | } | |
551 | ||
552 | if (*ssn == tid_data->next_reclaimed) { | |
553 | IWL_DEBUG_TX_QUEUES(priv, "Can proceed: ssn = next_recl = %d", | |
554 | tid_data->agg.ssn); | |
555 | tid_data->agg.state = IWL_AGG_ON; | |
fdf426a3 | 556 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); |
3c69b595 EG |
557 | } else { |
558 | IWL_DEBUG_TX_QUEUES(priv, "Can't proceed: ssn %d, " | |
559 | "next_reclaimed = %d", | |
560 | tid_data->agg.ssn, | |
561 | tid_data->next_reclaimed); | |
562 | tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; | |
563 | } | |
564 | ||
565 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
288712a6 | 566 | |
74bcdb33 WYG |
567 | return ret; |
568 | } | |
569 | ||
822e8b2a EG |
570 | int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif, |
571 | struct ieee80211_sta *sta, u16 tid, u8 buf_size) | |
572 | { | |
573 | struct iwl_station_priv *sta_priv = (void *) sta->drv_priv; | |
574 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
575 | unsigned long flags; | |
576 | u16 ssn; | |
577 | ||
578 | buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF); | |
579 | ||
580 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); | |
04cf6824 | 581 | ssn = priv->tid_data[sta_priv->sta_id][tid].agg.ssn; |
822e8b2a EG |
582 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
583 | ||
584 | iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, sta_priv->sta_id, tid, | |
585 | buf_size, ssn); | |
586 | ||
587 | /* | |
588 | * If the limit is 0, then it wasn't initialised yet, | |
589 | * use the default. We can do that since we take the | |
590 | * minimum below, and we don't want to go above our | |
591 | * default due to hardware restrictions. | |
592 | */ | |
593 | if (sta_priv->max_agg_bufsize == 0) | |
594 | sta_priv->max_agg_bufsize = | |
595 | LINK_QUAL_AGG_FRAME_LIMIT_DEF; | |
596 | ||
597 | /* | |
598 | * Even though in theory the peer could have different | |
599 | * aggregation reorder buffer sizes for different sessions, | |
600 | * our ucode doesn't allow for that and has a global limit | |
601 | * for each station. Therefore, use the minimum of all the | |
602 | * aggregation sessions and our default value. | |
603 | */ | |
604 | sta_priv->max_agg_bufsize = | |
605 | min(sta_priv->max_agg_bufsize, buf_size); | |
606 | ||
607 | if (cfg(priv)->ht_params && | |
608 | cfg(priv)->ht_params->use_rts_for_aggregation) { | |
609 | /* | |
610 | * switch to RTS/CTS if it is the prefer protection | |
611 | * method for HT traffic | |
612 | */ | |
613 | ||
614 | sta_priv->lq_sta.lq.general_params.flags |= | |
615 | LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK; | |
616 | } | |
617 | priv->agg_tids_count++; | |
618 | IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n", | |
619 | priv->agg_tids_count); | |
620 | ||
621 | sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit = | |
622 | sta_priv->max_agg_bufsize; | |
623 | ||
5fb8c182 | 624 | IWL_DEBUG_HT(priv, "Tx aggregation enabled on ra = %pM tid = %d\n", |
822e8b2a EG |
625 | sta->addr, tid); |
626 | ||
627 | return iwl_send_lq_cmd(priv, ctx, | |
628 | &sta_priv->lq_sta.lq, CMD_ASYNC, false); | |
629 | } | |
630 | ||
20addec6 EG |
631 | static void iwlagn_check_ratid_empty(struct iwl_priv *priv, int sta_id, u8 tid) |
632 | { | |
04cf6824 | 633 | struct iwl_tid_data *tid_data = &priv->tid_data[sta_id][tid]; |
fdf426a3 EG |
634 | enum iwl_rxon_context_id ctx; |
635 | struct ieee80211_vif *vif; | |
636 | u8 *addr; | |
20addec6 EG |
637 | |
638 | lockdep_assert_held(&priv->shrd->sta_lock); | |
639 | ||
fdf426a3 EG |
640 | addr = priv->stations[sta_id].sta.sta.addr; |
641 | ctx = priv->stations[sta_id].ctxid; | |
642 | vif = priv->contexts[ctx].vif; | |
643 | ||
04cf6824 | 644 | switch (priv->tid_data[sta_id][tid].agg.state) { |
20addec6 EG |
645 | case IWL_EMPTYING_HW_QUEUE_DELBA: |
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 DELBA flow ssn = next_recl =" | |
650 | " %d", tid_data->next_reclaimed); | |
651 | iwl_trans_tx_agg_disable(trans(priv), sta_id, tid); | |
652 | tid_data->agg.state = IWL_AGG_OFF; | |
fdf426a3 | 653 | ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
654 | } |
655 | break; | |
656 | case IWL_EMPTYING_HW_QUEUE_ADDBA: | |
657 | /* There are no packets for this RA / TID in the HW any more */ | |
658 | if (tid_data->agg.ssn == tid_data->next_reclaimed) { | |
659 | IWL_DEBUG_TX_QUEUES(priv, | |
660 | "Can continue ADDBA flow ssn = next_recl =" | |
661 | " %d", tid_data->next_reclaimed); | |
662 | tid_data->agg.state = IWL_AGG_ON; | |
fdf426a3 | 663 | ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid); |
20addec6 EG |
664 | } |
665 | break; | |
666 | default: | |
667 | break; | |
668 | } | |
669 | } | |
670 | ||
2e34034e JB |
671 | static void iwlagn_non_agg_tx_status(struct iwl_priv *priv, |
672 | struct iwl_rxon_context *ctx, | |
673 | const u8 *addr1) | |
74bcdb33 | 674 | { |
74bcdb33 WYG |
675 | struct ieee80211_sta *sta; |
676 | struct iwl_station_priv *sta_priv; | |
677 | ||
6db6340c | 678 | rcu_read_lock(); |
2e34034e | 679 | sta = ieee80211_find_sta(ctx->vif, addr1); |
74bcdb33 WYG |
680 | if (sta) { |
681 | sta_priv = (void *)sta->drv_priv; | |
682 | /* avoid atomic ops if this isn't a client */ | |
683 | if (sta_priv->client && | |
684 | atomic_dec_return(&sta_priv->pending_frames) == 0) | |
685 | ieee80211_sta_block_awake(priv->hw, sta, false); | |
686 | } | |
6db6340c | 687 | rcu_read_unlock(); |
2e34034e JB |
688 | } |
689 | ||
a0eaad71 EG |
690 | /** |
691 | * translate ucode response to mac80211 tx status control values | |
692 | */ | |
04e1cabe | 693 | static void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags, |
a0eaad71 | 694 | struct ieee80211_tx_info *info) |
2e34034e | 695 | { |
a0eaad71 | 696 | struct ieee80211_tx_rate *r = &info->control.rates[0]; |
74bcdb33 | 697 | |
a0eaad71 EG |
698 | info->antenna_sel_tx = |
699 | ((rate_n_flags & RATE_MCS_ANT_ABC_MSK) >> RATE_MCS_ANT_POS); | |
700 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
701 | r->flags |= IEEE80211_TX_RC_MCS; | |
702 | if (rate_n_flags & RATE_MCS_GF_MSK) | |
703 | r->flags |= IEEE80211_TX_RC_GREEN_FIELD; | |
704 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
705 | r->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
706 | if (rate_n_flags & RATE_MCS_DUP_MSK) | |
707 | r->flags |= IEEE80211_TX_RC_DUP_DATA; | |
708 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
709 | r->flags |= IEEE80211_TX_RC_SHORT_GI; | |
710 | r->idx = iwlagn_hwrate_to_mac80211_idx(rate_n_flags, info->band); | |
74bcdb33 WYG |
711 | } |
712 | ||
a0eaad71 EG |
713 | #ifdef CONFIG_IWLWIFI_DEBUG |
714 | const char *iwl_get_tx_fail_reason(u32 status) | |
74bcdb33 | 715 | { |
a0eaad71 EG |
716 | #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x |
717 | #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x | |
74bcdb33 | 718 | |
a0eaad71 EG |
719 | switch (status & TX_STATUS_MSK) { |
720 | case TX_STATUS_SUCCESS: | |
721 | return "SUCCESS"; | |
722 | TX_STATUS_POSTPONE(DELAY); | |
723 | TX_STATUS_POSTPONE(FEW_BYTES); | |
724 | TX_STATUS_POSTPONE(BT_PRIO); | |
725 | TX_STATUS_POSTPONE(QUIET_PERIOD); | |
726 | TX_STATUS_POSTPONE(CALC_TTAK); | |
727 | TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY); | |
728 | TX_STATUS_FAIL(SHORT_LIMIT); | |
729 | TX_STATUS_FAIL(LONG_LIMIT); | |
730 | TX_STATUS_FAIL(FIFO_UNDERRUN); | |
731 | TX_STATUS_FAIL(DRAIN_FLOW); | |
732 | TX_STATUS_FAIL(RFKILL_FLUSH); | |
733 | TX_STATUS_FAIL(LIFE_EXPIRE); | |
734 | TX_STATUS_FAIL(DEST_PS); | |
735 | TX_STATUS_FAIL(HOST_ABORTED); | |
736 | TX_STATUS_FAIL(BT_RETRY); | |
737 | TX_STATUS_FAIL(STA_INVALID); | |
738 | TX_STATUS_FAIL(FRAG_DROPPED); | |
739 | TX_STATUS_FAIL(TID_DISABLE); | |
740 | TX_STATUS_FAIL(FIFO_FLUSHED); | |
741 | TX_STATUS_FAIL(INSUFFICIENT_CF_POLL); | |
742 | TX_STATUS_FAIL(PASSIVE_NO_RX); | |
743 | TX_STATUS_FAIL(NO_BEACON_ON_RADAR); | |
74bcdb33 WYG |
744 | } |
745 | ||
a0eaad71 | 746 | return "UNKNOWN"; |
74bcdb33 | 747 | |
a0eaad71 EG |
748 | #undef TX_STATUS_FAIL |
749 | #undef TX_STATUS_POSTPONE | |
750 | } | |
751 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
b2502698 | 752 | |
04e1cabe EG |
753 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
754 | { | |
755 | status &= AGG_TX_STATUS_MSK; | |
756 | ||
757 | switch (status) { | |
758 | case AGG_TX_STATE_UNDERRUN_MSK: | |
759 | priv->reply_agg_tx_stats.underrun++; | |
760 | break; | |
761 | case AGG_TX_STATE_BT_PRIO_MSK: | |
762 | priv->reply_agg_tx_stats.bt_prio++; | |
763 | break; | |
764 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
765 | priv->reply_agg_tx_stats.few_bytes++; | |
766 | break; | |
767 | case AGG_TX_STATE_ABORT_MSK: | |
768 | priv->reply_agg_tx_stats.abort++; | |
769 | break; | |
770 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
771 | priv->reply_agg_tx_stats.last_sent_ttl++; | |
772 | break; | |
773 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
774 | priv->reply_agg_tx_stats.last_sent_try++; | |
775 | break; | |
776 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
777 | priv->reply_agg_tx_stats.last_sent_bt_kill++; | |
778 | break; | |
779 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
780 | priv->reply_agg_tx_stats.scd_query++; | |
781 | break; | |
782 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
783 | priv->reply_agg_tx_stats.bad_crc32++; | |
784 | break; | |
785 | case AGG_TX_STATE_RESPONSE_MSK: | |
786 | priv->reply_agg_tx_stats.response++; | |
787 | break; | |
788 | case AGG_TX_STATE_DUMP_TX_MSK: | |
789 | priv->reply_agg_tx_stats.dump_tx++; | |
790 | break; | |
791 | case AGG_TX_STATE_DELAY_TX_MSK: | |
792 | priv->reply_agg_tx_stats.delay_tx++; | |
793 | break; | |
794 | default: | |
795 | priv->reply_agg_tx_stats.unknown++; | |
796 | break; | |
797 | } | |
798 | } | |
799 | ||
a0eaad71 EG |
800 | static void iwl_rx_reply_tx_agg(struct iwl_priv *priv, |
801 | struct iwlagn_tx_resp *tx_resp) | |
802 | { | |
803 | struct agg_tx_status *frame_status = &tx_resp->status; | |
804 | int tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> | |
805 | IWLAGN_TX_RES_TID_POS; | |
806 | int sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
807 | IWLAGN_TX_RES_RA_POS; | |
04cf6824 | 808 | struct iwl_ht_agg *agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 EG |
809 | u32 status = le16_to_cpu(tx_resp->status.status); |
810 | int i; | |
811 | ||
3d29dd9b EG |
812 | WARN_ON(tid == IWL_TID_NON_QOS); |
813 | ||
a0eaad71 EG |
814 | if (agg->wait_for_ba) |
815 | IWL_DEBUG_TX_REPLY(priv, | |
816 | "got tx response w/o block-ack\n"); | |
74bcdb33 | 817 | |
a0eaad71 EG |
818 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
819 | agg->wait_for_ba = (tx_resp->frame_count > 1); | |
820 | ||
821 | /* | |
822 | * If the BT kill count is non-zero, we'll get this | |
823 | * notification again. | |
824 | */ | |
825 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
38622419 DF |
826 | cfg(priv)->bt_params && |
827 | cfg(priv)->bt_params->advanced_bt_coexist) { | |
a0eaad71 EG |
828 | IWL_DEBUG_COEX(priv, "receive reply tx w/ bt_kill\n"); |
829 | } | |
b2502698 | 830 | |
1a849613 EG |
831 | if (tx_resp->frame_count == 1) |
832 | return; | |
833 | ||
a0eaad71 EG |
834 | /* Construct bit-map of pending frames within Tx window */ |
835 | for (i = 0; i < tx_resp->frame_count; i++) { | |
836 | u16 fstatus = le16_to_cpu(frame_status[i].status); | |
74bcdb33 | 837 | |
a0eaad71 EG |
838 | if (status & AGG_TX_STATUS_MSK) |
839 | iwlagn_count_agg_tx_err_status(priv, fstatus); | |
74bcdb33 | 840 | |
a0eaad71 EG |
841 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
842 | AGG_TX_STATE_ABORT_MSK)) | |
843 | continue; | |
844 | ||
845 | IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), " | |
846 | "try-count (0x%08x)\n", | |
847 | iwl_get_agg_tx_fail_reason(fstatus), | |
848 | fstatus & AGG_TX_STATUS_MSK, | |
849 | fstatus & AGG_TX_TRY_MSK); | |
74bcdb33 | 850 | } |
74bcdb33 WYG |
851 | } |
852 | ||
04e1cabe EG |
853 | #ifdef CONFIG_IWLWIFI_DEBUG |
854 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
855 | ||
856 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
857 | { | |
858 | status &= AGG_TX_STATUS_MSK; | |
859 | switch (status) { | |
860 | case AGG_TX_STATE_TRANSMITTED: | |
861 | return "SUCCESS"; | |
862 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
863 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
864 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
865 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
866 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
867 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
868 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
869 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
870 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
871 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
872 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
873 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
874 | } | |
875 | ||
876 | return "UNKNOWN"; | |
877 | } | |
878 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
879 | ||
a0eaad71 EG |
880 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
881 | { | |
882 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
883 | tx_resp->frame_count) & MAX_SN; | |
884 | } | |
74bcdb33 | 885 | |
04e1cabe EG |
886 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
887 | { | |
888 | status &= TX_STATUS_MSK; | |
889 | ||
890 | switch (status) { | |
891 | case TX_STATUS_POSTPONE_DELAY: | |
892 | priv->reply_tx_stats.pp_delay++; | |
893 | break; | |
894 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
895 | priv->reply_tx_stats.pp_few_bytes++; | |
896 | break; | |
897 | case TX_STATUS_POSTPONE_BT_PRIO: | |
898 | priv->reply_tx_stats.pp_bt_prio++; | |
899 | break; | |
900 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
901 | priv->reply_tx_stats.pp_quiet_period++; | |
902 | break; | |
903 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
904 | priv->reply_tx_stats.pp_calc_ttak++; | |
905 | break; | |
906 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
907 | priv->reply_tx_stats.int_crossed_retry++; | |
908 | break; | |
909 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
910 | priv->reply_tx_stats.short_limit++; | |
911 | break; | |
912 | case TX_STATUS_FAIL_LONG_LIMIT: | |
913 | priv->reply_tx_stats.long_limit++; | |
914 | break; | |
915 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
916 | priv->reply_tx_stats.fifo_underrun++; | |
917 | break; | |
918 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
919 | priv->reply_tx_stats.drain_flow++; | |
920 | break; | |
921 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
922 | priv->reply_tx_stats.rfkill_flush++; | |
923 | break; | |
924 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
925 | priv->reply_tx_stats.life_expire++; | |
926 | break; | |
927 | case TX_STATUS_FAIL_DEST_PS: | |
928 | priv->reply_tx_stats.dest_ps++; | |
929 | break; | |
930 | case TX_STATUS_FAIL_HOST_ABORTED: | |
931 | priv->reply_tx_stats.host_abort++; | |
932 | break; | |
933 | case TX_STATUS_FAIL_BT_RETRY: | |
934 | priv->reply_tx_stats.bt_retry++; | |
935 | break; | |
936 | case TX_STATUS_FAIL_STA_INVALID: | |
937 | priv->reply_tx_stats.sta_invalid++; | |
938 | break; | |
939 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
940 | priv->reply_tx_stats.frag_drop++; | |
941 | break; | |
942 | case TX_STATUS_FAIL_TID_DISABLE: | |
943 | priv->reply_tx_stats.tid_disable++; | |
944 | break; | |
945 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
946 | priv->reply_tx_stats.fifo_flush++; | |
947 | break; | |
948 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
949 | priv->reply_tx_stats.insuff_cf_poll++; | |
950 | break; | |
951 | case TX_STATUS_FAIL_PASSIVE_NO_RX: | |
952 | priv->reply_tx_stats.fail_hw_drop++; | |
953 | break; | |
954 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: | |
955 | priv->reply_tx_stats.sta_color_mismatch++; | |
956 | break; | |
957 | default: | |
958 | priv->reply_tx_stats.unknown++; | |
959 | break; | |
960 | } | |
961 | } | |
962 | ||
963 | static void iwlagn_set_tx_status(struct iwl_priv *priv, | |
964 | struct ieee80211_tx_info *info, | |
965 | struct iwlagn_tx_resp *tx_resp, | |
966 | bool is_agg) | |
967 | { | |
968 | u16 status = le16_to_cpu(tx_resp->status.status); | |
969 | ||
970 | info->status.rates[0].count = tx_resp->failure_frame + 1; | |
971 | if (is_agg) | |
972 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
973 | info->flags |= iwl_tx_status_to_mac80211(status); | |
974 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
975 | info); | |
976 | if (!iwl_is_tx_success(status)) | |
977 | iwlagn_count_tx_err_status(priv, status); | |
978 | } | |
979 | ||
980 | static void iwl_check_abort_status(struct iwl_priv *priv, | |
981 | u8 frame_count, u32 status) | |
982 | { | |
983 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
984 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); | |
985 | if (!test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) | |
986 | queue_work(priv->shrd->workqueue, &priv->tx_flush); | |
987 | } | |
988 | } | |
989 | ||
247c61d6 EG |
990 | int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb, |
991 | struct iwl_device_cmd *cmd) | |
74bcdb33 | 992 | { |
a0eaad71 EG |
993 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
994 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
995 | int txq_id = SEQ_TO_QUEUE(sequence); | |
ff620849 | 996 | int cmd_index __maybe_unused = SEQ_TO_INDEX(sequence); |
a0eaad71 EG |
997 | struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
998 | struct ieee80211_hdr *hdr; | |
999 | u32 status = le16_to_cpu(tx_resp->status.status); | |
eb9a372a | 1000 | u16 ssn = iwlagn_get_scd_ssn(tx_resp); |
a0eaad71 EG |
1001 | int tid; |
1002 | int sta_id; | |
1003 | int freed; | |
74bcdb33 | 1004 | struct ieee80211_tx_info *info; |
a0eaad71 EG |
1005 | unsigned long flags; |
1006 | struct sk_buff_head skbs; | |
1007 | struct sk_buff *skb; | |
1008 | struct iwl_rxon_context *ctx; | |
8ad71bef | 1009 | bool is_agg = (txq_id >= IWLAGN_FIRST_AMPDU_QUEUE); |
d0eb6334 | 1010 | |
a0eaad71 EG |
1011 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
1012 | IWLAGN_TX_RES_TID_POS; | |
1013 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
1014 | IWLAGN_TX_RES_RA_POS; | |
9decde95 | 1015 | |
a0eaad71 | 1016 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
9decde95 | 1017 | |
8ad71bef | 1018 | if (is_agg) |
a0eaad71 EG |
1019 | iwl_rx_reply_tx_agg(priv, tx_resp); |
1020 | ||
1021 | if (tx_resp->frame_count == 1) { | |
eb9a372a EG |
1022 | u16 next_reclaimed = le16_to_cpu(tx_resp->seq_ctl); |
1023 | next_reclaimed = SEQ_TO_SN(next_reclaimed + 0x10); | |
1024 | ||
1025 | if (is_agg) { | |
1026 | /* If this is an aggregation queue, we can rely on the | |
1027 | * ssn since the wifi sequence number corresponds to | |
1028 | * the index in the TFD ring (%256). | |
1029 | * The seq_ctl is the sequence control of the packet | |
1030 | * to which this Tx response relates. But if there is a | |
1031 | * hole in the bitmap of the BA we received, this Tx | |
1032 | * response may allow to reclaim the hole and all the | |
1033 | * subsequent packets that were already acked. | |
1034 | * In that case, seq_ctl != ssn, and the next packet | |
1035 | * to be reclaimed will be ssn and not seq_ctl. | |
1036 | */ | |
1037 | next_reclaimed = ssn; | |
1038 | } | |
1039 | ||
a0eaad71 | 1040 | __skb_queue_head_init(&skbs); |
eb9a372a | 1041 | |
3d29dd9b EG |
1042 | if (tid != IWL_TID_NON_QOS) { |
1043 | priv->tid_data[sta_id][tid].next_reclaimed = | |
1044 | next_reclaimed; | |
1045 | IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d", | |
1046 | next_reclaimed); | |
1047 | } | |
eb9a372a | 1048 | |
a0eaad71 | 1049 | /*we can free until ssn % q.n_bd not inclusive */ |
76bc10fc EG |
1050 | WARN_ON(iwl_trans_reclaim(trans(priv), sta_id, tid, txq_id, |
1051 | ssn, status, &skbs)); | |
20addec6 | 1052 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 EG |
1053 | freed = 0; |
1054 | while (!skb_queue_empty(&skbs)) { | |
1055 | skb = __skb_dequeue(&skbs); | |
1056 | hdr = (struct ieee80211_hdr *)skb->data; | |
1057 | ||
1058 | if (!ieee80211_is_data_qos(hdr->frame_control)) | |
1059 | priv->last_seq_ctl = tx_resp->seq_ctl; | |
1060 | ||
1061 | info = IEEE80211_SKB_CB(skb); | |
1062 | ctx = info->driver_data[0]; | |
dfa2bdba EG |
1063 | kmem_cache_free(priv->tx_cmd_pool, |
1064 | (info->driver_data[1])); | |
a0eaad71 EG |
1065 | |
1066 | memset(&info->status, 0, sizeof(info->status)); | |
1067 | ||
1068 | if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && | |
1069 | iwl_is_associated_ctx(ctx) && ctx->vif && | |
1070 | ctx->vif->type == NL80211_IFTYPE_STATION) { | |
1071 | ctx->last_tx_rejected = true; | |
81a3de1c EG |
1072 | iwl_trans_stop_queue(trans(priv), txq_id, |
1073 | "Tx on passive channel"); | |
a0eaad71 EG |
1074 | |
1075 | IWL_DEBUG_TX_REPLY(priv, | |
1076 | "TXQ %d status %s (0x%08x) " | |
1077 | "rate_n_flags 0x%x retries %d\n", | |
1078 | txq_id, | |
1079 | iwl_get_tx_fail_reason(status), | |
1080 | status, | |
1081 | le32_to_cpu(tx_resp->rate_n_flags), | |
1082 | tx_resp->failure_frame); | |
1083 | ||
1084 | IWL_DEBUG_TX_REPLY(priv, | |
1085 | "FrameCnt = %d, idx=%d\n", | |
1086 | tx_resp->frame_count, cmd_index); | |
1087 | } | |
1088 | ||
1089 | /* check if BAR is needed */ | |
1090 | if (is_agg && !iwl_is_tx_success(status)) | |
1091 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
1092 | iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(skb), | |
1093 | tx_resp, is_agg); | |
1094 | if (!is_agg) | |
1095 | iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1); | |
1096 | ||
1097 | ieee80211_tx_status_irqsafe(priv->hw, skb); | |
1098 | ||
1099 | freed++; | |
1100 | } | |
74bcdb33 | 1101 | |
a0eaad71 | 1102 | WARN_ON(!is_agg && freed != 1); |
a0eaad71 | 1103 | } |
8d801080 | 1104 | |
a0eaad71 EG |
1105 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
1106 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); | |
247c61d6 | 1107 | return 0; |
8d801080 WYG |
1108 | } |
1109 | ||
74bcdb33 WYG |
1110 | /** |
1111 | * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA | |
1112 | * | |
1113 | * Handles block-acknowledge notification from device, which reports success | |
1114 | * of frames sent via aggregation. | |
1115 | */ | |
247c61d6 EG |
1116 | int iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, |
1117 | struct iwl_rx_mem_buffer *rxb, | |
1118 | struct iwl_device_cmd *cmd) | |
74bcdb33 WYG |
1119 | { |
1120 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1121 | struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; | |
74bcdb33 | 1122 | struct iwl_ht_agg *agg; |
a0eaad71 EG |
1123 | struct sk_buff_head reclaimed_skbs; |
1124 | struct ieee80211_tx_info *info; | |
1125 | struct ieee80211_hdr *hdr; | |
1126 | struct sk_buff *skb; | |
1127 | unsigned long flags; | |
74bcdb33 WYG |
1128 | int sta_id; |
1129 | int tid; | |
a0eaad71 | 1130 | int freed; |
74bcdb33 WYG |
1131 | |
1132 | /* "flow" corresponds to Tx queue */ | |
1133 | u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); | |
1134 | ||
1135 | /* "ssn" is start of block-ack Tx window, corresponds to index | |
1136 | * (in Tx queue's circular buffer) of first TFD/frame in window */ | |
1137 | u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); | |
1138 | ||
d6189124 | 1139 | if (scd_flow >= hw_params(priv).max_txq_num) { |
74bcdb33 WYG |
1140 | IWL_ERR(priv, |
1141 | "BUG_ON scd_flow is bigger than number of queues\n"); | |
247c61d6 | 1142 | return 0; |
74bcdb33 WYG |
1143 | } |
1144 | ||
74bcdb33 WYG |
1145 | sta_id = ba_resp->sta_id; |
1146 | tid = ba_resp->tid; | |
04cf6824 | 1147 | agg = &priv->tid_data[sta_id][tid].agg; |
a0eaad71 | 1148 | |
a0eaad71 EG |
1149 | spin_lock_irqsave(&priv->shrd->sta_lock, flags); |
1150 | ||
76bc10fc EG |
1151 | if (unlikely(!agg->wait_for_ba)) { |
1152 | if (unlikely(ba_resp->bitmap)) | |
1153 | IWL_ERR(priv, "Received BA when not expected\n"); | |
a0eaad71 | 1154 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
247c61d6 | 1155 | return 0; |
b561e827 | 1156 | } |
74bcdb33 | 1157 | |
76bc10fc EG |
1158 | __skb_queue_head_init(&reclaimed_skbs); |
1159 | ||
1160 | /* Release all TFDs before the SSN, i.e. all TFDs in front of | |
1161 | * block-ack window (we assume that they've been successfully | |
1162 | * transmitted ... if not, it's too late anyway). */ | |
1163 | if (iwl_trans_reclaim(trans(priv), sta_id, tid, scd_flow, | |
1164 | ba_resp_scd_ssn, 0, &reclaimed_skbs)) { | |
a0eaad71 | 1165 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
247c61d6 | 1166 | return 0; |
a0eaad71 | 1167 | } |
74bcdb33 WYG |
1168 | |
1169 | IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, " | |
1170 | "sta_id = %d\n", | |
1171 | agg->wait_for_ba, | |
1172 | (u8 *) &ba_resp->sta_addr_lo32, | |
1173 | ba_resp->sta_id); | |
a0eaad71 EG |
1174 | IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, " |
1175 | "scd_flow = %d, scd_ssn = %d\n", | |
aca15f81 | 1176 | ba_resp->tid, le16_to_cpu(ba_resp->seq_ctl), |
74bcdb33 | 1177 | (unsigned long long)le64_to_cpu(ba_resp->bitmap), |
b88f5be0 | 1178 | scd_flow, ba_resp_scd_ssn); |
74bcdb33 | 1179 | |
a0eaad71 | 1180 | /* Mark that the expected block-ack response arrived */ |
21023e26 | 1181 | agg->wait_for_ba = false; |
a0eaad71 EG |
1182 | |
1183 | /* Sanity check values reported by uCode */ | |
1184 | if (ba_resp->txed_2_done > ba_resp->txed) { | |
1185 | IWL_DEBUG_TX_REPLY(priv, | |
1186 | "bogus sent(%d) and ack(%d) count\n", | |
1187 | ba_resp->txed, ba_resp->txed_2_done); | |
1188 | /* | |
1189 | * set txed_2_done = txed, | |
1190 | * so it won't impact rate scale | |
1191 | */ | |
1192 | ba_resp->txed = ba_resp->txed_2_done; | |
1193 | } | |
1194 | IWL_DEBUG_HT(priv, "agg frames sent:%d, acked:%d\n", | |
1195 | ba_resp->txed, ba_resp->txed_2_done); | |
1196 | ||
04cf6824 | 1197 | priv->tid_data[sta_id][tid].next_reclaimed = ba_resp_scd_ssn; |
76bc10fc | 1198 | |
20addec6 | 1199 | iwlagn_check_ratid_empty(priv, sta_id, tid); |
a0eaad71 EG |
1200 | freed = 0; |
1201 | while (!skb_queue_empty(&reclaimed_skbs)) { | |
74bcdb33 | 1202 | |
a0eaad71 EG |
1203 | skb = __skb_dequeue(&reclaimed_skbs); |
1204 | hdr = (struct ieee80211_hdr *)skb->data; | |
69fdb710 | 1205 | |
a0eaad71 EG |
1206 | if (ieee80211_is_data_qos(hdr->frame_control)) |
1207 | freed++; | |
1208 | else | |
1209 | WARN_ON_ONCE(1); | |
1210 | ||
1a849613 EG |
1211 | info = IEEE80211_SKB_CB(skb); |
1212 | kmem_cache_free(priv->tx_cmd_pool, (info->driver_data[1])); | |
1213 | ||
1214 | if (freed == 1) { | |
a0eaad71 EG |
1215 | /* this is the first skb we deliver in this batch */ |
1216 | /* put the rate scaling data there */ | |
1217 | info = IEEE80211_SKB_CB(skb); | |
1218 | memset(&info->status, 0, sizeof(info->status)); | |
1219 | info->flags |= IEEE80211_TX_STAT_ACK; | |
1220 | info->flags |= IEEE80211_TX_STAT_AMPDU; | |
1221 | info->status.ampdu_ack_len = ba_resp->txed_2_done; | |
1222 | info->status.ampdu_len = ba_resp->txed; | |
1223 | iwlagn_hwrate_to_tx_control(priv, agg->rate_n_flags, | |
1224 | info); | |
1225 | } | |
69fdb710 | 1226 | |
a0eaad71 | 1227 | ieee80211_tx_status_irqsafe(priv->hw, skb); |
69fdb710 JB |
1228 | } |
1229 | ||
a0eaad71 | 1230 | spin_unlock_irqrestore(&priv->shrd->sta_lock, flags); |
247c61d6 | 1231 | return 0; |
69fdb710 | 1232 | } |