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2295c66b JB |
1 | /****************************************************************************** |
2 | * | |
fb4961db | 3 | * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. |
2295c66b JB |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
21 | * Contact Information: | |
22 | * Intel Linux Wireless <ilw@linux.intel.com> | |
23 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
24 | * | |
25 | *****************************************************************************/ | |
26 | ||
27 | #include "iwl-dev.h" | |
28 | #include "iwl-agn.h" | |
2295c66b JB |
29 | #include "iwl-core.h" |
30 | #include "iwl-agn-calib.h" | |
bdfbf092 | 31 | #include "iwl-trans.h" |
48f20d35 | 32 | #include "iwl-shared.h" |
2295c66b JB |
33 | |
34 | static int iwlagn_disable_bss(struct iwl_priv *priv, | |
35 | struct iwl_rxon_context *ctx, | |
36 | struct iwl_rxon_cmd *send) | |
37 | { | |
38 | __le32 old_filter = send->filter_flags; | |
39 | int ret; | |
40 | ||
41 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
e10a0533 | 42 | ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, |
e419d62d | 43 | CMD_SYNC, sizeof(*send), send); |
2295c66b JB |
44 | |
45 | send->filter_flags = old_filter; | |
46 | ||
47 | if (ret) | |
b36b110c TP |
48 | IWL_DEBUG_QUIET_RFKILL(priv, |
49 | "Error clearing ASSOC_MSK on BSS (%d)\n", ret); | |
2295c66b JB |
50 | |
51 | return ret; | |
52 | } | |
53 | ||
54 | static int iwlagn_disable_pan(struct iwl_priv *priv, | |
55 | struct iwl_rxon_context *ctx, | |
56 | struct iwl_rxon_cmd *send) | |
57 | { | |
311dce71 | 58 | struct iwl_notification_wait disable_wait; |
2295c66b JB |
59 | __le32 old_filter = send->filter_flags; |
60 | u8 old_dev_type = send->dev_type; | |
61 | int ret; | |
db662d47 JB |
62 | static const u8 deactivate_cmd[] = { |
63 | REPLY_WIPAN_DEACTIVATION_COMPLETE | |
64 | }; | |
2295c66b | 65 | |
4bd14dd5 | 66 | iwl_init_notification_wait(&priv->notif_wait, &disable_wait, |
db662d47 | 67 | deactivate_cmd, ARRAY_SIZE(deactivate_cmd), |
4bd14dd5 | 68 | NULL, NULL); |
311dce71 | 69 | |
2295c66b JB |
70 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
71 | send->dev_type = RXON_DEV_TYPE_P2P; | |
e10a0533 | 72 | ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, |
e419d62d | 73 | CMD_SYNC, sizeof(*send), send); |
2295c66b JB |
74 | |
75 | send->filter_flags = old_filter; | |
76 | send->dev_type = old_dev_type; | |
77 | ||
311dce71 | 78 | if (ret) { |
2295c66b | 79 | IWL_ERR(priv, "Error disabling PAN (%d)\n", ret); |
4bd14dd5 | 80 | iwl_remove_notification(&priv->notif_wait, &disable_wait); |
311dce71 | 81 | } else { |
4bd14dd5 JB |
82 | ret = iwl_wait_notification(&priv->notif_wait, |
83 | &disable_wait, HZ); | |
a8674a1e | 84 | if (ret) |
311dce71 JB |
85 | IWL_ERR(priv, "Timed out waiting for PAN disable\n"); |
86 | } | |
2295c66b JB |
87 | |
88 | return ret; | |
89 | } | |
90 | ||
2b9253d2 JB |
91 | static int iwlagn_disconn_pan(struct iwl_priv *priv, |
92 | struct iwl_rxon_context *ctx, | |
93 | struct iwl_rxon_cmd *send) | |
94 | { | |
95 | __le32 old_filter = send->filter_flags; | |
96 | int ret; | |
97 | ||
98 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
e10a0533 | 99 | ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC, |
e419d62d | 100 | sizeof(*send), send); |
2b9253d2 JB |
101 | |
102 | send->filter_flags = old_filter; | |
103 | ||
104 | return ret; | |
105 | } | |
106 | ||
f4115d46 SZ |
107 | static void iwlagn_update_qos(struct iwl_priv *priv, |
108 | struct iwl_rxon_context *ctx) | |
109 | { | |
110 | int ret; | |
111 | ||
112 | if (!ctx->is_active) | |
113 | return; | |
114 | ||
115 | ctx->qos_data.def_qos_parm.qos_flags = 0; | |
116 | ||
117 | if (ctx->qos_data.qos_active) | |
118 | ctx->qos_data.def_qos_parm.qos_flags |= | |
119 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
120 | ||
121 | if (ctx->ht.enabled) | |
122 | ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; | |
123 | ||
0dcf50ca | 124 | IWL_DEBUG_INFO(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", |
f4115d46 SZ |
125 | ctx->qos_data.qos_active, |
126 | ctx->qos_data.def_qos_parm.qos_flags); | |
127 | ||
e10a0533 | 128 | ret = iwl_dvm_send_cmd_pdu(priv, ctx->qos_cmd, CMD_SYNC, |
f4115d46 SZ |
129 | sizeof(struct iwl_qosparam_cmd), |
130 | &ctx->qos_data.def_qos_parm); | |
131 | if (ret) | |
b36b110c | 132 | IWL_DEBUG_QUIET_RFKILL(priv, "Failed to update QoS\n"); |
f4115d46 SZ |
133 | } |
134 | ||
bd50a8ab JB |
135 | static int iwlagn_update_beacon(struct iwl_priv *priv, |
136 | struct ieee80211_vif *vif) | |
137 | { | |
b1eea297 | 138 | lockdep_assert_held(&priv->mutex); |
bd50a8ab JB |
139 | |
140 | dev_kfree_skb(priv->beacon_skb); | |
141 | priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif); | |
142 | if (!priv->beacon_skb) | |
143 | return -ENOMEM; | |
144 | return iwlagn_send_beacon_cmd(priv); | |
145 | } | |
146 | ||
c3f6e9cf WYG |
147 | static int iwlagn_send_rxon_assoc(struct iwl_priv *priv, |
148 | struct iwl_rxon_context *ctx) | |
149 | { | |
150 | int ret = 0; | |
89e746b2 | 151 | struct iwl_rxon_assoc_cmd rxon_assoc; |
c3f6e9cf WYG |
152 | const struct iwl_rxon_cmd *rxon1 = &ctx->staging; |
153 | const struct iwl_rxon_cmd *rxon2 = &ctx->active; | |
154 | ||
155 | if ((rxon1->flags == rxon2->flags) && | |
156 | (rxon1->filter_flags == rxon2->filter_flags) && | |
157 | (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && | |
158 | (rxon1->ofdm_ht_single_stream_basic_rates == | |
159 | rxon2->ofdm_ht_single_stream_basic_rates) && | |
160 | (rxon1->ofdm_ht_dual_stream_basic_rates == | |
161 | rxon2->ofdm_ht_dual_stream_basic_rates) && | |
162 | (rxon1->ofdm_ht_triple_stream_basic_rates == | |
163 | rxon2->ofdm_ht_triple_stream_basic_rates) && | |
164 | (rxon1->acquisition_data == rxon2->acquisition_data) && | |
165 | (rxon1->rx_chain == rxon2->rx_chain) && | |
166 | (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { | |
167 | IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | rxon_assoc.flags = ctx->staging.flags; | |
172 | rxon_assoc.filter_flags = ctx->staging.filter_flags; | |
173 | rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates; | |
174 | rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates; | |
175 | rxon_assoc.reserved1 = 0; | |
176 | rxon_assoc.reserved2 = 0; | |
177 | rxon_assoc.reserved3 = 0; | |
178 | rxon_assoc.ofdm_ht_single_stream_basic_rates = | |
179 | ctx->staging.ofdm_ht_single_stream_basic_rates; | |
180 | rxon_assoc.ofdm_ht_dual_stream_basic_rates = | |
181 | ctx->staging.ofdm_ht_dual_stream_basic_rates; | |
182 | rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain; | |
183 | rxon_assoc.ofdm_ht_triple_stream_basic_rates = | |
184 | ctx->staging.ofdm_ht_triple_stream_basic_rates; | |
185 | rxon_assoc.acquisition_data = ctx->staging.acquisition_data; | |
186 | ||
e10a0533 | 187 | ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_assoc_cmd, |
e419d62d | 188 | CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc); |
c3f6e9cf WYG |
189 | return ret; |
190 | } | |
191 | ||
c1821c95 WYG |
192 | static int iwlagn_rxon_disconn(struct iwl_priv *priv, |
193 | struct iwl_rxon_context *ctx) | |
194 | { | |
195 | int ret; | |
196 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
197 | ||
2b9253d2 | 198 | if (ctx->ctxid == IWL_RXON_CTX_BSS) { |
c1821c95 | 199 | ret = iwlagn_disable_bss(priv, ctx, &ctx->staging); |
2b9253d2 | 200 | } else { |
c1821c95 | 201 | ret = iwlagn_disable_pan(priv, ctx, &ctx->staging); |
2b9253d2 JB |
202 | if (ret) |
203 | return ret; | |
204 | if (ctx->vif) { | |
205 | ret = iwl_send_rxon_timing(priv, ctx); | |
206 | if (ret) { | |
207 | IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); | |
208 | return ret; | |
209 | } | |
210 | ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging); | |
211 | } | |
212 | } | |
c1821c95 WYG |
213 | if (ret) |
214 | return ret; | |
215 | ||
216 | /* | |
217 | * Un-assoc RXON clears the station table and WEP | |
218 | * keys, so we have to restore those afterwards. | |
219 | */ | |
220 | iwl_clear_ucode_stations(priv, ctx); | |
f775aa06 JB |
221 | /* update -- might need P2P now */ |
222 | iwl_update_bcast_station(priv, ctx); | |
c1821c95 WYG |
223 | iwl_restore_stations(priv, ctx); |
224 | ret = iwl_restore_default_wep_keys(priv, ctx); | |
225 | if (ret) { | |
226 | IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret); | |
227 | return ret; | |
228 | } | |
229 | ||
230 | memcpy(active, &ctx->staging, sizeof(*active)); | |
231 | return 0; | |
232 | } | |
233 | ||
234 | static int iwlagn_rxon_connect(struct iwl_priv *priv, | |
235 | struct iwl_rxon_context *ctx) | |
236 | { | |
237 | int ret; | |
238 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
239 | ||
240 | /* RXON timing must be before associated RXON */ | |
2b9253d2 JB |
241 | if (ctx->ctxid == IWL_RXON_CTX_BSS) { |
242 | ret = iwl_send_rxon_timing(priv, ctx); | |
243 | if (ret) { | |
244 | IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); | |
245 | return ret; | |
246 | } | |
c1821c95 WYG |
247 | } |
248 | /* QoS info may be cleared by previous un-assoc RXON */ | |
249 | iwlagn_update_qos(priv, ctx); | |
250 | ||
251 | /* | |
252 | * We'll run into this code path when beaconing is | |
253 | * enabled, but then we also need to send the beacon | |
254 | * to the device. | |
255 | */ | |
256 | if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) { | |
257 | ret = iwlagn_update_beacon(priv, ctx->vif); | |
258 | if (ret) { | |
259 | IWL_ERR(priv, | |
260 | "Error sending required beacon (%d)!\n", | |
261 | ret); | |
262 | return ret; | |
263 | } | |
264 | } | |
265 | ||
266 | priv->start_calib = 0; | |
267 | /* | |
268 | * Apply the new configuration. | |
269 | * | |
270 | * Associated RXON doesn't clear the station table in uCode, | |
271 | * so we don't need to restore stations etc. after this. | |
272 | */ | |
e10a0533 | 273 | ret = iwl_dvm_send_cmd_pdu(priv, ctx->rxon_cmd, CMD_SYNC, |
c1821c95 WYG |
274 | sizeof(struct iwl_rxon_cmd), &ctx->staging); |
275 | if (ret) { | |
276 | IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); | |
277 | return ret; | |
278 | } | |
279 | memcpy(active, &ctx->staging, sizeof(*active)); | |
280 | ||
c1821c95 WYG |
281 | /* IBSS beacon needs to be sent after setting assoc */ |
282 | if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC)) | |
283 | if (iwlagn_update_beacon(priv, ctx->vif)) | |
284 | IWL_ERR(priv, "Error sending IBSS beacon\n"); | |
285 | iwl_init_sensitivity(priv); | |
286 | ||
287 | /* | |
288 | * If we issue a new RXON command which required a tune then | |
289 | * we must send a new TXPOWER command or we won't be able to | |
290 | * Tx any frames. | |
291 | * | |
292 | * It's expected we set power here if channel is changing. | |
293 | */ | |
294 | ret = iwl_set_tx_power(priv, priv->tx_power_next, true); | |
295 | if (ret) { | |
296 | IWL_ERR(priv, "Error sending TX power (%d)\n", ret); | |
297 | return ret; | |
298 | } | |
15b3f3b0 | 299 | |
107ef97a | 300 | if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION && |
38622419 | 301 | cfg(priv)->ht_params && cfg(priv)->ht_params->smps_mode) |
15b3f3b0 | 302 | ieee80211_request_smps(ctx->vif, |
38622419 | 303 | cfg(priv)->ht_params->smps_mode); |
15b3f3b0 | 304 | |
c1821c95 WYG |
305 | return 0; |
306 | } | |
307 | ||
e505c433 WYG |
308 | int iwlagn_set_pan_params(struct iwl_priv *priv) |
309 | { | |
310 | struct iwl_wipan_params_cmd cmd; | |
311 | struct iwl_rxon_context *ctx_bss, *ctx_pan; | |
312 | int slot0 = 300, slot1 = 0; | |
313 | int ret; | |
314 | ||
a18f61bc | 315 | if (priv->valid_contexts == BIT(IWL_RXON_CTX_BSS)) |
e505c433 WYG |
316 | return 0; |
317 | ||
318 | BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); | |
319 | ||
b1eea297 | 320 | lockdep_assert_held(&priv->mutex); |
e505c433 WYG |
321 | |
322 | ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS]; | |
323 | ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN]; | |
324 | ||
325 | /* | |
326 | * If the PAN context is inactive, then we don't need | |
327 | * to update the PAN parameters, the last thing we'll | |
328 | * have done before it goes inactive is making the PAN | |
329 | * parameters be WLAN-only. | |
330 | */ | |
331 | if (!ctx_pan->is_active) | |
332 | return 0; | |
333 | ||
334 | memset(&cmd, 0, sizeof(cmd)); | |
335 | ||
336 | /* only 2 slots are currently allowed */ | |
337 | cmd.num_slots = 2; | |
338 | ||
339 | cmd.slots[0].type = 0; /* BSS */ | |
340 | cmd.slots[1].type = 1; /* PAN */ | |
341 | ||
c6baf7fb | 342 | if (priv->hw_roc_setup) { |
e505c433 | 343 | /* both contexts must be used for this to happen */ |
c6baf7fb JB |
344 | slot1 = IWL_MIN_SLOT_TIME; |
345 | slot0 = 3000; | |
e505c433 | 346 | } else if (ctx_bss->vif && ctx_pan->vif) { |
bbb05cb5 | 347 | int bcnint = ctx_pan->beacon_int; |
e505c433 WYG |
348 | int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1; |
349 | ||
350 | /* should be set, but seems unused?? */ | |
351 | cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE); | |
352 | ||
353 | if (ctx_pan->vif->type == NL80211_IFTYPE_AP && | |
354 | bcnint && | |
bbb05cb5 | 355 | bcnint != ctx_bss->beacon_int) { |
e505c433 WYG |
356 | IWL_ERR(priv, |
357 | "beacon intervals don't match (%d, %d)\n", | |
bbb05cb5 | 358 | ctx_bss->beacon_int, ctx_pan->beacon_int); |
e505c433 WYG |
359 | } else |
360 | bcnint = max_t(int, bcnint, | |
bbb05cb5 | 361 | ctx_bss->beacon_int); |
e505c433 WYG |
362 | if (!bcnint) |
363 | bcnint = DEFAULT_BEACON_INTERVAL; | |
364 | slot0 = bcnint / 2; | |
365 | slot1 = bcnint - slot0; | |
366 | ||
83626404 | 367 | if (test_bit(STATUS_SCAN_HW, &priv->status) || |
e505c433 WYG |
368 | (!ctx_bss->vif->bss_conf.idle && |
369 | !ctx_bss->vif->bss_conf.assoc)) { | |
370 | slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME; | |
371 | slot1 = IWL_MIN_SLOT_TIME; | |
372 | } else if (!ctx_pan->vif->bss_conf.idle && | |
373 | !ctx_pan->vif->bss_conf.assoc) { | |
325a7ddf | 374 | slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME; |
e505c433 WYG |
375 | slot0 = IWL_MIN_SLOT_TIME; |
376 | } | |
377 | } else if (ctx_pan->vif) { | |
378 | slot0 = 0; | |
379 | slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) * | |
bbb05cb5 | 380 | ctx_pan->beacon_int; |
e505c433 WYG |
381 | slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1); |
382 | ||
83626404 | 383 | if (test_bit(STATUS_SCAN_HW, &priv->status)) { |
e505c433 WYG |
384 | slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME; |
385 | slot1 = IWL_MIN_SLOT_TIME; | |
386 | } | |
387 | } | |
388 | ||
389 | cmd.slots[0].width = cpu_to_le16(slot0); | |
390 | cmd.slots[1].width = cpu_to_le16(slot1); | |
391 | ||
e10a0533 | 392 | ret = iwl_dvm_send_cmd_pdu(priv, REPLY_WIPAN_PARAMS, CMD_SYNC, |
e505c433 WYG |
393 | sizeof(cmd), &cmd); |
394 | if (ret) | |
395 | IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret); | |
396 | ||
397 | return ret; | |
398 | } | |
399 | ||
2295c66b JB |
400 | /** |
401 | * iwlagn_commit_rxon - commit staging_rxon to hardware | |
402 | * | |
403 | * The RXON command in staging_rxon is committed to the hardware and | |
404 | * the active_rxon structure is updated with the new data. This | |
405 | * function correctly transitions out of the RXON_ASSOC_MSK state if | |
406 | * a HW tune is required based on the RXON structure changes. | |
c1821c95 WYG |
407 | * |
408 | * The connect/disconnect flow should be as the following: | |
409 | * | |
410 | * 1. make sure send RXON command with association bit unset if not connect | |
411 | * this should include the channel and the band for the candidate | |
412 | * to be connected to | |
413 | * 2. Add Station before RXON association with the AP | |
414 | * 3. RXON_timing has to send before RXON for connection | |
415 | * 4. full RXON command - associated bit set | |
416 | * 5. use RXON_ASSOC command to update any flags changes | |
2295c66b JB |
417 | */ |
418 | int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
419 | { | |
420 | /* cast away the const for active_rxon in this function */ | |
421 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
2295c66b JB |
422 | bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK); |
423 | int ret; | |
424 | ||
b1eea297 | 425 | lockdep_assert_held(&priv->mutex); |
2295c66b | 426 | |
83626404 | 427 | if (!iwl_is_alive(priv)) |
2295c66b JB |
428 | return -EBUSY; |
429 | ||
430 | /* This function hardcodes a bunch of dual-mode assumptions */ | |
431 | BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); | |
432 | ||
433 | if (!ctx->is_active) | |
434 | return 0; | |
435 | ||
436 | /* always get timestamp with Rx frame */ | |
437 | ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK; | |
438 | ||
42b70a5f SG |
439 | /* |
440 | * force CTS-to-self frames protection if RTS-CTS is not preferred | |
441 | * one aggregation protection method | |
442 | */ | |
b9ad70da | 443 | if (!hw_params(priv).use_rts_for_aggregation) |
42b70a5f SG |
444 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; |
445 | ||
2295c66b JB |
446 | if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) || |
447 | !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK)) | |
448 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
449 | else | |
450 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
451 | ||
522376d2 | 452 | iwl_print_rx_config_cmd(priv, ctx->ctxid); |
2295c66b JB |
453 | ret = iwl_check_rxon_cmd(priv, ctx); |
454 | if (ret) { | |
455 | IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); | |
456 | return -EINVAL; | |
457 | } | |
458 | ||
459 | /* | |
460 | * receive commit_rxon request | |
461 | * abort any previous channel switch if still in process | |
462 | */ | |
83626404 | 463 | if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status) && |
6f213ff1 | 464 | (priv->switch_channel != ctx->staging.channel)) { |
2295c66b | 465 | IWL_DEBUG_11H(priv, "abort channel switch on %d\n", |
6f213ff1 | 466 | le16_to_cpu(priv->switch_channel)); |
2295c66b JB |
467 | iwl_chswitch_done(priv, false); |
468 | } | |
469 | ||
470 | /* | |
471 | * If we don't need to send a full RXON, we can use | |
472 | * iwl_rxon_assoc_cmd which is used to reconfigure filter | |
473 | * and other flags for the current radio configuration. | |
474 | */ | |
475 | if (!iwl_full_rxon_required(priv, ctx)) { | |
c3f6e9cf | 476 | ret = iwlagn_send_rxon_assoc(priv, ctx); |
2295c66b JB |
477 | if (ret) { |
478 | IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret); | |
479 | return ret; | |
480 | } | |
481 | ||
482 | memcpy(active, &ctx->staging, sizeof(*active)); | |
891db881 WYG |
483 | /* |
484 | * We do not commit tx power settings while channel changing, | |
485 | * do it now if after settings changed. | |
486 | */ | |
487 | iwl_set_tx_power(priv, priv->tx_power_next, false); | |
15b3f3b0 WYG |
488 | |
489 | /* make sure we are in the right PS state */ | |
490 | iwl_power_update_mode(priv, true); | |
491 | ||
2295c66b JB |
492 | return 0; |
493 | } | |
494 | ||
9d143e9a | 495 | iwl_set_rxon_hwcrypto(priv, ctx, !iwlagn_mod_params.sw_crypto); |
2295c66b JB |
496 | |
497 | IWL_DEBUG_INFO(priv, | |
498 | "Going to commit RXON\n" | |
499 | " * with%s RXON_FILTER_ASSOC_MSK\n" | |
500 | " * channel = %d\n" | |
501 | " * bssid = %pM\n", | |
502 | (new_assoc ? "" : "out"), | |
503 | le16_to_cpu(ctx->staging.channel), | |
504 | ctx->staging.bssid_addr); | |
505 | ||
506 | /* | |
52d980c0 JB |
507 | * Always clear associated first, but with the correct config. |
508 | * This is required as for example station addition for the | |
509 | * AP station must be done after the BSSID is set to correctly | |
510 | * set up filters in the device. | |
2295c66b | 511 | */ |
3083d03c WYG |
512 | ret = iwlagn_rxon_disconn(priv, ctx); |
513 | if (ret) | |
514 | return ret; | |
2295c66b | 515 | |
e3f10cea WYG |
516 | ret = iwlagn_set_pan_params(priv); |
517 | if (ret) | |
518 | return ret; | |
2b9253d2 | 519 | |
c1821c95 WYG |
520 | if (new_assoc) |
521 | return iwlagn_rxon_connect(priv, ctx); | |
2295c66b JB |
522 | |
523 | return 0; | |
524 | } | |
525 | ||
34a5b4b6 WYG |
526 | void iwlagn_config_ht40(struct ieee80211_conf *conf, |
527 | struct iwl_rxon_context *ctx) | |
528 | { | |
529 | if (conf_is_ht40_minus(conf)) { | |
530 | ctx->ht.extension_chan_offset = | |
531 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
532 | ctx->ht.is_40mhz = true; | |
533 | } else if (conf_is_ht40_plus(conf)) { | |
534 | ctx->ht.extension_chan_offset = | |
535 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
536 | ctx->ht.is_40mhz = true; | |
537 | } else { | |
538 | ctx->ht.extension_chan_offset = | |
539 | IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
540 | ctx->ht.is_40mhz = false; | |
541 | } | |
542 | } | |
543 | ||
2295c66b JB |
544 | int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed) |
545 | { | |
d0f76d68 | 546 | struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
2295c66b JB |
547 | struct iwl_rxon_context *ctx; |
548 | struct ieee80211_conf *conf = &hw->conf; | |
549 | struct ieee80211_channel *channel = conf->channel; | |
550 | const struct iwl_channel_info *ch_info; | |
551 | int ret = 0; | |
552 | ||
0ca24daf | 553 | IWL_DEBUG_MAC80211(priv, "enter: changed %#x\n", changed); |
2295c66b | 554 | |
b1eea297 | 555 | mutex_lock(&priv->mutex); |
2295c66b | 556 | |
83626404 | 557 | if (unlikely(test_bit(STATUS_SCANNING, &priv->status))) { |
2295c66b JB |
558 | IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); |
559 | goto out; | |
560 | } | |
561 | ||
83626404 | 562 | if (!iwl_is_ready(priv)) { |
2295c66b JB |
563 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
564 | goto out; | |
565 | } | |
566 | ||
567 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | | |
568 | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
569 | /* mac80211 uses static for non-HT which is what we want */ | |
570 | priv->current_ht_config.smps = conf->smps_mode; | |
571 | ||
572 | /* | |
573 | * Recalculate chain counts. | |
574 | * | |
575 | * If monitor mode is enabled then mac80211 will | |
576 | * set up the SM PS mode to OFF if an HT channel is | |
577 | * configured. | |
578 | */ | |
e3f10cea WYG |
579 | for_each_context(priv, ctx) |
580 | iwlagn_set_rxon_chain(priv, ctx); | |
2295c66b JB |
581 | } |
582 | ||
583 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
2295c66b JB |
584 | ch_info = iwl_get_channel_info(priv, channel->band, |
585 | channel->hw_value); | |
586 | if (!is_channel_valid(ch_info)) { | |
587 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); | |
588 | ret = -EINVAL; | |
589 | goto out; | |
590 | } | |
591 | ||
2295c66b JB |
592 | for_each_context(priv, ctx) { |
593 | /* Configure HT40 channels */ | |
7caa2316 | 594 | if (ctx->ht.enabled != conf_is_ht(conf)) |
35a6eb36 | 595 | ctx->ht.enabled = conf_is_ht(conf); |
35a6eb36 | 596 | |
2295c66b | 597 | if (ctx->ht.enabled) { |
34a5b4b6 WYG |
598 | /* if HT40 is used, it should not change |
599 | * after associated except channel switch */ | |
78feb35b WYG |
600 | if (!ctx->ht.is_40mhz || |
601 | !iwl_is_associated_ctx(ctx)) | |
34a5b4b6 | 602 | iwlagn_config_ht40(conf, ctx); |
2295c66b JB |
603 | } else |
604 | ctx->ht.is_40mhz = false; | |
605 | ||
606 | /* | |
607 | * Default to no protection. Protection mode will | |
608 | * later be set from BSS config in iwl_ht_conf | |
609 | */ | |
610 | ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
611 | ||
612 | /* if we are switching from ht to 2.4 clear flags | |
613 | * from any ht related info since 2.4 does not | |
614 | * support ht */ | |
615 | if (le16_to_cpu(ctx->staging.channel) != | |
616 | channel->hw_value) | |
617 | ctx->staging.flags = 0; | |
618 | ||
619 | iwl_set_rxon_channel(priv, channel, ctx); | |
620 | iwl_set_rxon_ht(priv, &priv->current_ht_config); | |
621 | ||
622 | iwl_set_flags_for_band(priv, ctx, channel->band, | |
623 | ctx->vif); | |
624 | } | |
625 | ||
2295c66b JB |
626 | iwl_update_bcast_stations(priv); |
627 | ||
628 | /* | |
629 | * The list of supported rates and rate mask can be different | |
630 | * for each band; since the band may have changed, reset | |
631 | * the rate mask to what mac80211 lists. | |
632 | */ | |
633 | iwl_set_rate(priv); | |
634 | } | |
635 | ||
636 | if (changed & (IEEE80211_CONF_CHANGE_PS | | |
637 | IEEE80211_CONF_CHANGE_IDLE)) { | |
638 | ret = iwl_power_update_mode(priv, false); | |
639 | if (ret) | |
640 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); | |
641 | } | |
642 | ||
643 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
644 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", | |
645 | priv->tx_power_user_lmt, conf->power_level); | |
646 | ||
647 | iwl_set_tx_power(priv, conf->power_level, false); | |
648 | } | |
649 | ||
650 | for_each_context(priv, ctx) { | |
651 | if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
652 | continue; | |
653 | iwlagn_commit_rxon(priv, ctx); | |
654 | } | |
655 | out: | |
b1eea297 | 656 | mutex_unlock(&priv->mutex); |
770c72c4 WYG |
657 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
658 | ||
2295c66b JB |
659 | return ret; |
660 | } | |
661 | ||
2295c66b JB |
662 | static void iwlagn_check_needed_chains(struct iwl_priv *priv, |
663 | struct iwl_rxon_context *ctx, | |
664 | struct ieee80211_bss_conf *bss_conf) | |
665 | { | |
666 | struct ieee80211_vif *vif = ctx->vif; | |
667 | struct iwl_rxon_context *tmp; | |
668 | struct ieee80211_sta *sta; | |
669 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
850bedcc | 670 | struct ieee80211_sta_ht_cap *ht_cap; |
2295c66b JB |
671 | bool need_multiple; |
672 | ||
b1eea297 | 673 | lockdep_assert_held(&priv->mutex); |
2295c66b JB |
674 | |
675 | switch (vif->type) { | |
676 | case NL80211_IFTYPE_STATION: | |
677 | rcu_read_lock(); | |
678 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
850bedcc | 679 | if (!sta) { |
2295c66b JB |
680 | /* |
681 | * If at all, this can only happen through a race | |
682 | * when the AP disconnects us while we're still | |
683 | * setting up the connection, in that case mac80211 | |
684 | * will soon tell us about that. | |
685 | */ | |
686 | need_multiple = false; | |
850bedcc JB |
687 | rcu_read_unlock(); |
688 | break; | |
689 | } | |
690 | ||
691 | ht_cap = &sta->ht_cap; | |
692 | ||
693 | need_multiple = true; | |
694 | ||
695 | /* | |
696 | * If the peer advertises no support for receiving 2 and 3 | |
697 | * stream MCS rates, it can't be transmitting them either. | |
698 | */ | |
699 | if (ht_cap->mcs.rx_mask[1] == 0 && | |
700 | ht_cap->mcs.rx_mask[2] == 0) { | |
701 | need_multiple = false; | |
702 | } else if (!(ht_cap->mcs.tx_params & | |
703 | IEEE80211_HT_MCS_TX_DEFINED)) { | |
704 | /* If it can't TX MCS at all ... */ | |
705 | need_multiple = false; | |
706 | } else if (ht_cap->mcs.tx_params & | |
707 | IEEE80211_HT_MCS_TX_RX_DIFF) { | |
708 | int maxstreams; | |
709 | ||
710 | /* | |
711 | * But if it can receive them, it might still not | |
712 | * be able to transmit them, which is what we need | |
713 | * to check here -- so check the number of streams | |
714 | * it advertises for TX (if different from RX). | |
715 | */ | |
716 | ||
717 | maxstreams = (ht_cap->mcs.tx_params & | |
718 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK); | |
719 | maxstreams >>= | |
720 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
721 | maxstreams += 1; | |
722 | ||
723 | if (maxstreams <= 1) | |
724 | need_multiple = false; | |
2295c66b | 725 | } |
850bedcc | 726 | |
2295c66b JB |
727 | rcu_read_unlock(); |
728 | break; | |
729 | case NL80211_IFTYPE_ADHOC: | |
730 | /* currently */ | |
731 | need_multiple = false; | |
732 | break; | |
733 | default: | |
734 | /* only AP really */ | |
735 | need_multiple = true; | |
736 | break; | |
737 | } | |
738 | ||
739 | ctx->ht_need_multiple_chains = need_multiple; | |
740 | ||
741 | if (!need_multiple) { | |
742 | /* check all contexts */ | |
743 | for_each_context(priv, tmp) { | |
744 | if (!tmp->vif) | |
745 | continue; | |
746 | if (tmp->ht_need_multiple_chains) { | |
747 | need_multiple = true; | |
748 | break; | |
749 | } | |
750 | } | |
751 | } | |
752 | ||
753 | ht_conf->single_chain_sufficient = !need_multiple; | |
754 | } | |
755 | ||
5c3d29fc DF |
756 | static void iwlagn_chain_noise_reset(struct iwl_priv *priv) |
757 | { | |
758 | struct iwl_chain_noise_data *data = &priv->chain_noise_data; | |
759 | int ret; | |
760 | ||
761 | if ((data->state == IWL_CHAIN_NOISE_ALIVE) && | |
762 | iwl_is_any_associated(priv)) { | |
763 | struct iwl_calib_chain_noise_reset_cmd cmd; | |
764 | ||
765 | /* clear data for chain noise calibration algorithm */ | |
766 | data->chain_noise_a = 0; | |
767 | data->chain_noise_b = 0; | |
768 | data->chain_noise_c = 0; | |
769 | data->chain_signal_a = 0; | |
770 | data->chain_signal_b = 0; | |
771 | data->chain_signal_c = 0; | |
772 | data->beacon_count = 0; | |
773 | ||
774 | memset(&cmd, 0, sizeof(cmd)); | |
775 | iwl_set_calib_hdr(&cmd.hdr, | |
898ed67b | 776 | priv->phy_calib_chain_noise_reset_cmd); |
e10a0533 | 777 | ret = iwl_dvm_send_cmd_pdu(priv, |
5c3d29fc DF |
778 | REPLY_PHY_CALIBRATION_CMD, |
779 | CMD_SYNC, sizeof(cmd), &cmd); | |
780 | if (ret) | |
781 | IWL_ERR(priv, | |
782 | "Could not send REPLY_PHY_CALIBRATION_CMD\n"); | |
783 | data->state = IWL_CHAIN_NOISE_ACCUMULATE; | |
784 | IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n"); | |
785 | } | |
786 | } | |
787 | ||
2295c66b JB |
788 | void iwlagn_bss_info_changed(struct ieee80211_hw *hw, |
789 | struct ieee80211_vif *vif, | |
790 | struct ieee80211_bss_conf *bss_conf, | |
791 | u32 changes) | |
792 | { | |
d0f76d68 | 793 | struct iwl_priv *priv = IWL_MAC80211_GET_DVM(hw); |
2295c66b JB |
794 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); |
795 | int ret; | |
796 | bool force = false; | |
797 | ||
b1eea297 | 798 | mutex_lock(&priv->mutex); |
2295c66b | 799 | |
83626404 | 800 | if (unlikely(!iwl_is_ready(priv))) { |
14a085e7 | 801 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
b1eea297 | 802 | mutex_unlock(&priv->mutex); |
ae0b693c SZ |
803 | return; |
804 | } | |
805 | ||
806 | if (unlikely(!ctx->vif)) { | |
807 | IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n"); | |
b1eea297 | 808 | mutex_unlock(&priv->mutex); |
893654de JB |
809 | return; |
810 | } | |
811 | ||
2295c66b JB |
812 | if (changes & BSS_CHANGED_BEACON_INT) |
813 | force = true; | |
814 | ||
815 | if (changes & BSS_CHANGED_QOS) { | |
816 | ctx->qos_data.qos_active = bss_conf->qos; | |
817 | iwlagn_update_qos(priv, ctx); | |
818 | } | |
819 | ||
820 | ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid); | |
821 | if (vif->bss_conf.use_short_preamble) | |
822 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
823 | else | |
824 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
825 | ||
826 | if (changes & BSS_CHANGED_ASSOC) { | |
827 | if (bss_conf->assoc) { | |
e9ac0745 | 828 | priv->timestamp = bss_conf->last_tsf; |
2295c66b JB |
829 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; |
830 | } else { | |
68b99311 GT |
831 | /* |
832 | * If we disassociate while there are pending | |
833 | * frames, just wake up the queues and let the | |
834 | * frames "escape" ... This shouldn't really | |
835 | * be happening to start with, but we should | |
836 | * not get stuck in this case either since it | |
837 | * can happen if userspace gets confused. | |
838 | */ | |
e755f882 JB |
839 | iwlagn_lift_passive_no_rx(priv); |
840 | ||
2295c66b | 841 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
c8ac61cf JB |
842 | |
843 | if (ctx->ctxid == IWL_RXON_CTX_BSS) | |
844 | priv->have_rekey_data = false; | |
2295c66b | 845 | } |
207ecc5e MV |
846 | |
847 | iwlagn_bt_coex_rssi_monitor(priv); | |
2295c66b JB |
848 | } |
849 | ||
850 | if (ctx->ht.enabled) { | |
851 | ctx->ht.protection = bss_conf->ht_operation_mode & | |
852 | IEEE80211_HT_OP_MODE_PROTECTION; | |
853 | ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode & | |
854 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
855 | iwlagn_check_needed_chains(priv, ctx, bss_conf); | |
b2769b84 | 856 | iwl_set_rxon_ht(priv, &priv->current_ht_config); |
2295c66b JB |
857 | } |
858 | ||
e3f10cea | 859 | iwlagn_set_rxon_chain(priv, ctx); |
2295c66b JB |
860 | |
861 | if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) | |
862 | ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; | |
863 | else | |
864 | ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
865 | ||
866 | if (bss_conf->use_cts_prot) | |
867 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; | |
868 | else | |
869 | ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; | |
870 | ||
871 | memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); | |
872 | ||
873 | if (vif->type == NL80211_IFTYPE_AP || | |
874 | vif->type == NL80211_IFTYPE_ADHOC) { | |
875 | if (vif->bss_conf.enable_beacon) { | |
876 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
877 | priv->beacon_ctx = ctx; | |
878 | } else { | |
879 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
880 | priv->beacon_ctx = NULL; | |
881 | } | |
882 | } | |
883 | ||
758f555f MV |
884 | /* |
885 | * If the ucode decides to do beacon filtering before | |
886 | * association, it will lose beacons that are needed | |
887 | * before sending frames out on passive channels. This | |
888 | * causes association failures on those channels. Enable | |
889 | * receiving beacons in such cases. | |
890 | */ | |
891 | ||
892 | if (vif->type == NL80211_IFTYPE_STATION) { | |
893 | if (!bss_conf->assoc) | |
894 | ctx->staging.filter_flags |= RXON_FILTER_BCON_AWARE_MSK; | |
895 | else | |
896 | ctx->staging.filter_flags &= | |
897 | ~RXON_FILTER_BCON_AWARE_MSK; | |
898 | } | |
899 | ||
2295c66b JB |
900 | if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) |
901 | iwlagn_commit_rxon(priv, ctx); | |
902 | ||
8da8e628 JB |
903 | if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { |
904 | /* | |
905 | * The chain noise calibration will enable PM upon | |
906 | * completion. If calibration has already been run | |
907 | * then we need to enable power management here. | |
908 | */ | |
909 | if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE) | |
910 | iwl_power_update_mode(priv, false); | |
911 | ||
912 | /* Enable RX differential gain and sensitivity calibrations */ | |
5c3d29fc DF |
913 | if (!priv->disable_chain_noise_cal) |
914 | iwlagn_chain_noise_reset(priv); | |
8da8e628 JB |
915 | priv->start_calib = 1; |
916 | } | |
917 | ||
2295c66b JB |
918 | if (changes & BSS_CHANGED_IBSS) { |
919 | ret = iwlagn_manage_ibss_station(priv, vif, | |
920 | bss_conf->ibss_joined); | |
921 | if (ret) | |
922 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", | |
923 | bss_conf->ibss_joined ? "add" : "remove", | |
924 | bss_conf->bssid); | |
925 | } | |
926 | ||
bd50a8ab JB |
927 | if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC && |
928 | priv->beacon_ctx) { | |
929 | if (iwlagn_update_beacon(priv, vif)) | |
930 | IWL_ERR(priv, "Error sending IBSS beacon\n"); | |
931 | } | |
932 | ||
b1eea297 | 933 | mutex_unlock(&priv->mutex); |
2295c66b | 934 | } |
ae79d23d JB |
935 | |
936 | void iwlagn_post_scan(struct iwl_priv *priv) | |
937 | { | |
938 | struct iwl_rxon_context *ctx; | |
939 | ||
c2b821d7 WYG |
940 | /* |
941 | * We do not commit power settings while scan is pending, | |
942 | * do it now if the settings changed. | |
943 | */ | |
944 | iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false); | |
945 | iwl_set_tx_power(priv, priv->tx_power_next, false); | |
946 | ||
ae79d23d JB |
947 | /* |
948 | * Since setting the RXON may have been deferred while | |
949 | * performing the scan, fire one off if needed | |
950 | */ | |
951 | for_each_context(priv, ctx) | |
952 | if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
953 | iwlagn_commit_rxon(priv, ctx); | |
954 | ||
e3f10cea | 955 | iwlagn_set_pan_params(priv); |
ae79d23d | 956 | } |