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2295c66b JB |
1 | /****************************************************************************** |
2 | * | |
901069c7 | 3 | * Copyright(c) 2003 - 2011 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; | |
e6bb4c9c | 42 | ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd, |
e419d62d | 43 | CMD_SYNC, sizeof(*send), send); |
2295c66b JB |
44 | |
45 | send->filter_flags = old_filter; | |
46 | ||
47 | if (ret) | |
48 | IWL_ERR(priv, "Error clearing ASSOC_MSK on BSS (%d)\n", ret); | |
49 | ||
50 | return ret; | |
51 | } | |
52 | ||
53 | static int iwlagn_disable_pan(struct iwl_priv *priv, | |
54 | struct iwl_rxon_context *ctx, | |
55 | struct iwl_rxon_cmd *send) | |
56 | { | |
311dce71 | 57 | struct iwl_notification_wait disable_wait; |
2295c66b JB |
58 | __le32 old_filter = send->filter_flags; |
59 | u8 old_dev_type = send->dev_type; | |
60 | int ret; | |
61 | ||
09f18afe JB |
62 | iwlagn_init_notification_wait(priv, &disable_wait, |
63 | REPLY_WIPAN_DEACTIVATION_COMPLETE, | |
64 | NULL, NULL); | |
311dce71 | 65 | |
2295c66b JB |
66 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
67 | send->dev_type = RXON_DEV_TYPE_P2P; | |
e6bb4c9c | 68 | ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd, |
e419d62d | 69 | CMD_SYNC, sizeof(*send), send); |
2295c66b JB |
70 | |
71 | send->filter_flags = old_filter; | |
72 | send->dev_type = old_dev_type; | |
73 | ||
311dce71 | 74 | if (ret) { |
2295c66b | 75 | IWL_ERR(priv, "Error disabling PAN (%d)\n", ret); |
311dce71 JB |
76 | iwlagn_remove_notification(priv, &disable_wait); |
77 | } else { | |
a8674a1e JB |
78 | ret = iwlagn_wait_notification(priv, &disable_wait, HZ); |
79 | if (ret) | |
311dce71 JB |
80 | IWL_ERR(priv, "Timed out waiting for PAN disable\n"); |
81 | } | |
2295c66b JB |
82 | |
83 | return ret; | |
84 | } | |
85 | ||
2b9253d2 JB |
86 | static int iwlagn_disconn_pan(struct iwl_priv *priv, |
87 | struct iwl_rxon_context *ctx, | |
88 | struct iwl_rxon_cmd *send) | |
89 | { | |
90 | __le32 old_filter = send->filter_flags; | |
91 | int ret; | |
92 | ||
93 | send->filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
e6bb4c9c | 94 | ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd, CMD_SYNC, |
e419d62d | 95 | sizeof(*send), send); |
2b9253d2 JB |
96 | |
97 | send->filter_flags = old_filter; | |
98 | ||
99 | return ret; | |
100 | } | |
101 | ||
f4115d46 SZ |
102 | static void iwlagn_update_qos(struct iwl_priv *priv, |
103 | struct iwl_rxon_context *ctx) | |
104 | { | |
105 | int ret; | |
106 | ||
107 | if (!ctx->is_active) | |
108 | return; | |
109 | ||
110 | ctx->qos_data.def_qos_parm.qos_flags = 0; | |
111 | ||
112 | if (ctx->qos_data.qos_active) | |
113 | ctx->qos_data.def_qos_parm.qos_flags |= | |
114 | QOS_PARAM_FLG_UPDATE_EDCA_MSK; | |
115 | ||
116 | if (ctx->ht.enabled) | |
117 | ctx->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK; | |
118 | ||
119 | IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n", | |
120 | ctx->qos_data.qos_active, | |
121 | ctx->qos_data.def_qos_parm.qos_flags); | |
122 | ||
e6bb4c9c | 123 | ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->qos_cmd, CMD_SYNC, |
f4115d46 SZ |
124 | sizeof(struct iwl_qosparam_cmd), |
125 | &ctx->qos_data.def_qos_parm); | |
126 | if (ret) | |
127 | IWL_ERR(priv, "Failed to update QoS\n"); | |
128 | } | |
129 | ||
bd50a8ab JB |
130 | static int iwlagn_update_beacon(struct iwl_priv *priv, |
131 | struct ieee80211_vif *vif) | |
132 | { | |
6ac2f839 | 133 | lockdep_assert_held(&priv->shrd->mutex); |
bd50a8ab JB |
134 | |
135 | dev_kfree_skb(priv->beacon_skb); | |
136 | priv->beacon_skb = ieee80211_beacon_get(priv->hw, vif); | |
137 | if (!priv->beacon_skb) | |
138 | return -ENOMEM; | |
139 | return iwlagn_send_beacon_cmd(priv); | |
140 | } | |
141 | ||
c3f6e9cf WYG |
142 | static int iwlagn_send_rxon_assoc(struct iwl_priv *priv, |
143 | struct iwl_rxon_context *ctx) | |
144 | { | |
145 | int ret = 0; | |
89e746b2 | 146 | struct iwl_rxon_assoc_cmd rxon_assoc; |
c3f6e9cf WYG |
147 | const struct iwl_rxon_cmd *rxon1 = &ctx->staging; |
148 | const struct iwl_rxon_cmd *rxon2 = &ctx->active; | |
149 | ||
150 | if ((rxon1->flags == rxon2->flags) && | |
151 | (rxon1->filter_flags == rxon2->filter_flags) && | |
152 | (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && | |
153 | (rxon1->ofdm_ht_single_stream_basic_rates == | |
154 | rxon2->ofdm_ht_single_stream_basic_rates) && | |
155 | (rxon1->ofdm_ht_dual_stream_basic_rates == | |
156 | rxon2->ofdm_ht_dual_stream_basic_rates) && | |
157 | (rxon1->ofdm_ht_triple_stream_basic_rates == | |
158 | rxon2->ofdm_ht_triple_stream_basic_rates) && | |
159 | (rxon1->acquisition_data == rxon2->acquisition_data) && | |
160 | (rxon1->rx_chain == rxon2->rx_chain) && | |
161 | (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { | |
162 | IWL_DEBUG_INFO(priv, "Using current RXON_ASSOC. Not resending.\n"); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | rxon_assoc.flags = ctx->staging.flags; | |
167 | rxon_assoc.filter_flags = ctx->staging.filter_flags; | |
168 | rxon_assoc.ofdm_basic_rates = ctx->staging.ofdm_basic_rates; | |
169 | rxon_assoc.cck_basic_rates = ctx->staging.cck_basic_rates; | |
170 | rxon_assoc.reserved1 = 0; | |
171 | rxon_assoc.reserved2 = 0; | |
172 | rxon_assoc.reserved3 = 0; | |
173 | rxon_assoc.ofdm_ht_single_stream_basic_rates = | |
174 | ctx->staging.ofdm_ht_single_stream_basic_rates; | |
175 | rxon_assoc.ofdm_ht_dual_stream_basic_rates = | |
176 | ctx->staging.ofdm_ht_dual_stream_basic_rates; | |
177 | rxon_assoc.rx_chain_select_flags = ctx->staging.rx_chain; | |
178 | rxon_assoc.ofdm_ht_triple_stream_basic_rates = | |
179 | ctx->staging.ofdm_ht_triple_stream_basic_rates; | |
180 | rxon_assoc.acquisition_data = ctx->staging.acquisition_data; | |
181 | ||
e6bb4c9c | 182 | ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_assoc_cmd, |
e419d62d | 183 | CMD_ASYNC, sizeof(rxon_assoc), &rxon_assoc); |
c3f6e9cf WYG |
184 | return ret; |
185 | } | |
186 | ||
c1821c95 WYG |
187 | static int iwlagn_rxon_disconn(struct iwl_priv *priv, |
188 | struct iwl_rxon_context *ctx) | |
189 | { | |
190 | int ret; | |
191 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
192 | ||
2b9253d2 | 193 | if (ctx->ctxid == IWL_RXON_CTX_BSS) { |
c1821c95 | 194 | ret = iwlagn_disable_bss(priv, ctx, &ctx->staging); |
2b9253d2 | 195 | } else { |
c1821c95 | 196 | ret = iwlagn_disable_pan(priv, ctx, &ctx->staging); |
2b9253d2 JB |
197 | if (ret) |
198 | return ret; | |
199 | if (ctx->vif) { | |
200 | ret = iwl_send_rxon_timing(priv, ctx); | |
201 | if (ret) { | |
202 | IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); | |
203 | return ret; | |
204 | } | |
205 | ret = iwlagn_disconn_pan(priv, ctx, &ctx->staging); | |
206 | } | |
207 | } | |
c1821c95 WYG |
208 | if (ret) |
209 | return ret; | |
210 | ||
211 | /* | |
212 | * Un-assoc RXON clears the station table and WEP | |
213 | * keys, so we have to restore those afterwards. | |
214 | */ | |
215 | iwl_clear_ucode_stations(priv, ctx); | |
f775aa06 JB |
216 | /* update -- might need P2P now */ |
217 | iwl_update_bcast_station(priv, ctx); | |
c1821c95 WYG |
218 | iwl_restore_stations(priv, ctx); |
219 | ret = iwl_restore_default_wep_keys(priv, ctx); | |
220 | if (ret) { | |
221 | IWL_ERR(priv, "Failed to restore WEP keys (%d)\n", ret); | |
222 | return ret; | |
223 | } | |
224 | ||
225 | memcpy(active, &ctx->staging, sizeof(*active)); | |
226 | return 0; | |
227 | } | |
228 | ||
229 | static int iwlagn_rxon_connect(struct iwl_priv *priv, | |
230 | struct iwl_rxon_context *ctx) | |
231 | { | |
232 | int ret; | |
233 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
234 | ||
235 | /* RXON timing must be before associated RXON */ | |
2b9253d2 JB |
236 | if (ctx->ctxid == IWL_RXON_CTX_BSS) { |
237 | ret = iwl_send_rxon_timing(priv, ctx); | |
238 | if (ret) { | |
239 | IWL_ERR(priv, "Failed to send timing (%d)!\n", ret); | |
240 | return ret; | |
241 | } | |
c1821c95 WYG |
242 | } |
243 | /* QoS info may be cleared by previous un-assoc RXON */ | |
244 | iwlagn_update_qos(priv, ctx); | |
245 | ||
246 | /* | |
247 | * We'll run into this code path when beaconing is | |
248 | * enabled, but then we also need to send the beacon | |
249 | * to the device. | |
250 | */ | |
251 | if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_AP)) { | |
252 | ret = iwlagn_update_beacon(priv, ctx->vif); | |
253 | if (ret) { | |
254 | IWL_ERR(priv, | |
255 | "Error sending required beacon (%d)!\n", | |
256 | ret); | |
257 | return ret; | |
258 | } | |
259 | } | |
260 | ||
261 | priv->start_calib = 0; | |
262 | /* | |
263 | * Apply the new configuration. | |
264 | * | |
265 | * Associated RXON doesn't clear the station table in uCode, | |
266 | * so we don't need to restore stations etc. after this. | |
267 | */ | |
e6bb4c9c | 268 | ret = iwl_trans_send_cmd_pdu(trans(priv), ctx->rxon_cmd, CMD_SYNC, |
c1821c95 WYG |
269 | sizeof(struct iwl_rxon_cmd), &ctx->staging); |
270 | if (ret) { | |
271 | IWL_ERR(priv, "Error setting new RXON (%d)\n", ret); | |
272 | return ret; | |
273 | } | |
274 | memcpy(active, &ctx->staging, sizeof(*active)); | |
275 | ||
276 | iwl_reprogram_ap_sta(priv, ctx); | |
277 | ||
278 | /* IBSS beacon needs to be sent after setting assoc */ | |
279 | if (ctx->vif && (ctx->vif->type == NL80211_IFTYPE_ADHOC)) | |
280 | if (iwlagn_update_beacon(priv, ctx->vif)) | |
281 | IWL_ERR(priv, "Error sending IBSS beacon\n"); | |
282 | iwl_init_sensitivity(priv); | |
283 | ||
284 | /* | |
285 | * If we issue a new RXON command which required a tune then | |
286 | * we must send a new TXPOWER command or we won't be able to | |
287 | * Tx any frames. | |
288 | * | |
289 | * It's expected we set power here if channel is changing. | |
290 | */ | |
291 | ret = iwl_set_tx_power(priv, priv->tx_power_next, true); | |
292 | if (ret) { | |
293 | IWL_ERR(priv, "Error sending TX power (%d)\n", ret); | |
294 | return ret; | |
295 | } | |
15b3f3b0 WYG |
296 | |
297 | if ((ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) && | |
298 | priv->cfg->ht_params->smps_mode) | |
299 | ieee80211_request_smps(ctx->vif, | |
300 | priv->cfg->ht_params->smps_mode); | |
301 | ||
c1821c95 WYG |
302 | return 0; |
303 | } | |
304 | ||
e505c433 WYG |
305 | int iwlagn_set_pan_params(struct iwl_priv *priv) |
306 | { | |
307 | struct iwl_wipan_params_cmd cmd; | |
308 | struct iwl_rxon_context *ctx_bss, *ctx_pan; | |
309 | int slot0 = 300, slot1 = 0; | |
310 | int ret; | |
311 | ||
7a10e3e4 | 312 | if (priv->shrd->valid_contexts == BIT(IWL_RXON_CTX_BSS)) |
e505c433 WYG |
313 | return 0; |
314 | ||
315 | BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2); | |
316 | ||
6ac2f839 | 317 | lockdep_assert_held(&priv->shrd->mutex); |
e505c433 WYG |
318 | |
319 | ctx_bss = &priv->contexts[IWL_RXON_CTX_BSS]; | |
320 | ctx_pan = &priv->contexts[IWL_RXON_CTX_PAN]; | |
321 | ||
322 | /* | |
323 | * If the PAN context is inactive, then we don't need | |
324 | * to update the PAN parameters, the last thing we'll | |
325 | * have done before it goes inactive is making the PAN | |
326 | * parameters be WLAN-only. | |
327 | */ | |
328 | if (!ctx_pan->is_active) | |
329 | return 0; | |
330 | ||
331 | memset(&cmd, 0, sizeof(cmd)); | |
332 | ||
333 | /* only 2 slots are currently allowed */ | |
334 | cmd.num_slots = 2; | |
335 | ||
336 | cmd.slots[0].type = 0; /* BSS */ | |
337 | cmd.slots[1].type = 1; /* PAN */ | |
338 | ||
c6baf7fb | 339 | if (priv->hw_roc_setup) { |
e505c433 | 340 | /* both contexts must be used for this to happen */ |
c6baf7fb JB |
341 | slot1 = IWL_MIN_SLOT_TIME; |
342 | slot0 = 3000; | |
e505c433 | 343 | } else if (ctx_bss->vif && ctx_pan->vif) { |
bbb05cb5 | 344 | int bcnint = ctx_pan->beacon_int; |
e505c433 WYG |
345 | int dtim = ctx_pan->vif->bss_conf.dtim_period ?: 1; |
346 | ||
347 | /* should be set, but seems unused?? */ | |
348 | cmd.flags |= cpu_to_le16(IWL_WIPAN_PARAMS_FLG_SLOTTED_MODE); | |
349 | ||
350 | if (ctx_pan->vif->type == NL80211_IFTYPE_AP && | |
351 | bcnint && | |
bbb05cb5 | 352 | bcnint != ctx_bss->beacon_int) { |
e505c433 WYG |
353 | IWL_ERR(priv, |
354 | "beacon intervals don't match (%d, %d)\n", | |
bbb05cb5 | 355 | ctx_bss->beacon_int, ctx_pan->beacon_int); |
e505c433 WYG |
356 | } else |
357 | bcnint = max_t(int, bcnint, | |
bbb05cb5 | 358 | ctx_bss->beacon_int); |
e505c433 WYG |
359 | if (!bcnint) |
360 | bcnint = DEFAULT_BEACON_INTERVAL; | |
361 | slot0 = bcnint / 2; | |
362 | slot1 = bcnint - slot0; | |
363 | ||
63013ae3 | 364 | if (test_bit(STATUS_SCAN_HW, &priv->shrd->status) || |
e505c433 WYG |
365 | (!ctx_bss->vif->bss_conf.idle && |
366 | !ctx_bss->vif->bss_conf.assoc)) { | |
367 | slot0 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME; | |
368 | slot1 = IWL_MIN_SLOT_TIME; | |
369 | } else if (!ctx_pan->vif->bss_conf.idle && | |
370 | !ctx_pan->vif->bss_conf.assoc) { | |
325a7ddf | 371 | slot1 = dtim * bcnint * 3 - IWL_MIN_SLOT_TIME; |
e505c433 WYG |
372 | slot0 = IWL_MIN_SLOT_TIME; |
373 | } | |
374 | } else if (ctx_pan->vif) { | |
375 | slot0 = 0; | |
376 | slot1 = max_t(int, 1, ctx_pan->vif->bss_conf.dtim_period) * | |
bbb05cb5 | 377 | ctx_pan->beacon_int; |
e505c433 WYG |
378 | slot1 = max_t(int, DEFAULT_BEACON_INTERVAL, slot1); |
379 | ||
63013ae3 | 380 | if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) { |
e505c433 WYG |
381 | slot0 = slot1 * 3 - IWL_MIN_SLOT_TIME; |
382 | slot1 = IWL_MIN_SLOT_TIME; | |
383 | } | |
384 | } | |
385 | ||
386 | cmd.slots[0].width = cpu_to_le16(slot0); | |
387 | cmd.slots[1].width = cpu_to_le16(slot1); | |
388 | ||
e6bb4c9c | 389 | ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WIPAN_PARAMS, CMD_SYNC, |
e505c433 WYG |
390 | sizeof(cmd), &cmd); |
391 | if (ret) | |
392 | IWL_ERR(priv, "Error setting PAN parameters (%d)\n", ret); | |
393 | ||
394 | return ret; | |
395 | } | |
396 | ||
2295c66b JB |
397 | /** |
398 | * iwlagn_commit_rxon - commit staging_rxon to hardware | |
399 | * | |
400 | * The RXON command in staging_rxon is committed to the hardware and | |
401 | * the active_rxon structure is updated with the new data. This | |
402 | * function correctly transitions out of the RXON_ASSOC_MSK state if | |
403 | * a HW tune is required based on the RXON structure changes. | |
c1821c95 WYG |
404 | * |
405 | * The connect/disconnect flow should be as the following: | |
406 | * | |
407 | * 1. make sure send RXON command with association bit unset if not connect | |
408 | * this should include the channel and the band for the candidate | |
409 | * to be connected to | |
410 | * 2. Add Station before RXON association with the AP | |
411 | * 3. RXON_timing has to send before RXON for connection | |
412 | * 4. full RXON command - associated bit set | |
413 | * 5. use RXON_ASSOC command to update any flags changes | |
2295c66b JB |
414 | */ |
415 | int iwlagn_commit_rxon(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
416 | { | |
417 | /* cast away the const for active_rxon in this function */ | |
418 | struct iwl_rxon_cmd *active = (void *)&ctx->active; | |
2295c66b JB |
419 | bool new_assoc = !!(ctx->staging.filter_flags & RXON_FILTER_ASSOC_MSK); |
420 | int ret; | |
421 | ||
6ac2f839 | 422 | lockdep_assert_held(&priv->shrd->mutex); |
2295c66b | 423 | |
63013ae3 | 424 | if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) |
adb90a00 WYG |
425 | return -EINVAL; |
426 | ||
845a9c0d | 427 | if (!iwl_is_alive(priv->shrd)) |
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 | ||
debcf734 JB |
436 | /* override BSSID if necessary due to preauth */ |
437 | if (ctx->preauth_bssid) | |
438 | memcpy(ctx->staging.bssid_addr, ctx->bssid, ETH_ALEN); | |
439 | ||
2295c66b JB |
440 | /* always get timestamp with Rx frame */ |
441 | ctx->staging.flags |= RXON_FLG_TSF2HOST_MSK; | |
442 | ||
42b70a5f SG |
443 | /* |
444 | * force CTS-to-self frames protection if RTS-CTS is not preferred | |
445 | * one aggregation protection method | |
446 | */ | |
447 | if (!(priv->cfg->ht_params && | |
448 | priv->cfg->ht_params->use_rts_for_aggregation)) | |
449 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; | |
450 | ||
2295c66b JB |
451 | if ((ctx->vif && ctx->vif->bss_conf.use_short_slot) || |
452 | !(ctx->staging.flags & RXON_FLG_BAND_24G_MSK)) | |
453 | ctx->staging.flags |= RXON_FLG_SHORT_SLOT_MSK; | |
454 | else | |
455 | ctx->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK; | |
456 | ||
522376d2 | 457 | iwl_print_rx_config_cmd(priv, ctx->ctxid); |
2295c66b JB |
458 | ret = iwl_check_rxon_cmd(priv, ctx); |
459 | if (ret) { | |
460 | IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n"); | |
461 | return -EINVAL; | |
462 | } | |
463 | ||
464 | /* | |
465 | * receive commit_rxon request | |
466 | * abort any previous channel switch if still in process | |
467 | */ | |
63013ae3 | 468 | if (test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status) && |
6f213ff1 | 469 | (priv->switch_channel != ctx->staging.channel)) { |
2295c66b | 470 | IWL_DEBUG_11H(priv, "abort channel switch on %d\n", |
6f213ff1 | 471 | le16_to_cpu(priv->switch_channel)); |
2295c66b JB |
472 | iwl_chswitch_done(priv, false); |
473 | } | |
474 | ||
475 | /* | |
476 | * If we don't need to send a full RXON, we can use | |
477 | * iwl_rxon_assoc_cmd which is used to reconfigure filter | |
478 | * and other flags for the current radio configuration. | |
479 | */ | |
480 | if (!iwl_full_rxon_required(priv, ctx)) { | |
c3f6e9cf | 481 | ret = iwlagn_send_rxon_assoc(priv, ctx); |
2295c66b JB |
482 | if (ret) { |
483 | IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret); | |
484 | return ret; | |
485 | } | |
486 | ||
487 | memcpy(active, &ctx->staging, sizeof(*active)); | |
891db881 WYG |
488 | /* |
489 | * We do not commit tx power settings while channel changing, | |
490 | * do it now if after settings changed. | |
491 | */ | |
492 | iwl_set_tx_power(priv, priv->tx_power_next, false); | |
15b3f3b0 WYG |
493 | |
494 | /* make sure we are in the right PS state */ | |
495 | iwl_power_update_mode(priv, true); | |
496 | ||
2295c66b JB |
497 | return 0; |
498 | } | |
499 | ||
9d143e9a | 500 | iwl_set_rxon_hwcrypto(priv, ctx, !iwlagn_mod_params.sw_crypto); |
2295c66b JB |
501 | |
502 | IWL_DEBUG_INFO(priv, | |
503 | "Going to commit RXON\n" | |
504 | " * with%s RXON_FILTER_ASSOC_MSK\n" | |
505 | " * channel = %d\n" | |
506 | " * bssid = %pM\n", | |
507 | (new_assoc ? "" : "out"), | |
508 | le16_to_cpu(ctx->staging.channel), | |
509 | ctx->staging.bssid_addr); | |
510 | ||
511 | /* | |
52d980c0 JB |
512 | * Always clear associated first, but with the correct config. |
513 | * This is required as for example station addition for the | |
514 | * AP station must be done after the BSSID is set to correctly | |
515 | * set up filters in the device. | |
2295c66b | 516 | */ |
3083d03c WYG |
517 | ret = iwlagn_rxon_disconn(priv, ctx); |
518 | if (ret) | |
519 | return ret; | |
2295c66b | 520 | |
e3f10cea WYG |
521 | ret = iwlagn_set_pan_params(priv); |
522 | if (ret) | |
523 | return ret; | |
2b9253d2 | 524 | |
c1821c95 WYG |
525 | if (new_assoc) |
526 | return iwlagn_rxon_connect(priv, ctx); | |
2295c66b JB |
527 | |
528 | return 0; | |
529 | } | |
530 | ||
531 | int iwlagn_mac_config(struct ieee80211_hw *hw, u32 changed) | |
532 | { | |
533 | struct iwl_priv *priv = hw->priv; | |
534 | struct iwl_rxon_context *ctx; | |
535 | struct ieee80211_conf *conf = &hw->conf; | |
536 | struct ieee80211_channel *channel = conf->channel; | |
537 | const struct iwl_channel_info *ch_info; | |
538 | int ret = 0; | |
539 | ||
770c72c4 | 540 | IWL_DEBUG_MAC80211(priv, "enter: changed %#x", changed); |
2295c66b | 541 | |
6ac2f839 | 542 | mutex_lock(&priv->shrd->mutex); |
2295c66b | 543 | |
63013ae3 | 544 | if (unlikely(test_bit(STATUS_SCANNING, &priv->shrd->status))) { |
2295c66b JB |
545 | IWL_DEBUG_MAC80211(priv, "leave - scanning\n"); |
546 | goto out; | |
547 | } | |
548 | ||
845a9c0d | 549 | if (!iwl_is_ready(priv->shrd)) { |
2295c66b JB |
550 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
551 | goto out; | |
552 | } | |
553 | ||
554 | if (changed & (IEEE80211_CONF_CHANGE_SMPS | | |
555 | IEEE80211_CONF_CHANGE_CHANNEL)) { | |
556 | /* mac80211 uses static for non-HT which is what we want */ | |
557 | priv->current_ht_config.smps = conf->smps_mode; | |
558 | ||
559 | /* | |
560 | * Recalculate chain counts. | |
561 | * | |
562 | * If monitor mode is enabled then mac80211 will | |
563 | * set up the SM PS mode to OFF if an HT channel is | |
564 | * configured. | |
565 | */ | |
e3f10cea WYG |
566 | for_each_context(priv, ctx) |
567 | iwlagn_set_rxon_chain(priv, ctx); | |
2295c66b JB |
568 | } |
569 | ||
570 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
571 | unsigned long flags; | |
572 | ||
573 | ch_info = iwl_get_channel_info(priv, channel->band, | |
574 | channel->hw_value); | |
575 | if (!is_channel_valid(ch_info)) { | |
576 | IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n"); | |
577 | ret = -EINVAL; | |
578 | goto out; | |
579 | } | |
580 | ||
10b15e6f | 581 | spin_lock_irqsave(&priv->shrd->lock, flags); |
2295c66b JB |
582 | |
583 | for_each_context(priv, ctx) { | |
584 | /* Configure HT40 channels */ | |
7caa2316 | 585 | if (ctx->ht.enabled != conf_is_ht(conf)) |
35a6eb36 | 586 | ctx->ht.enabled = conf_is_ht(conf); |
35a6eb36 | 587 | |
2295c66b JB |
588 | if (ctx->ht.enabled) { |
589 | if (conf_is_ht40_minus(conf)) { | |
590 | ctx->ht.extension_chan_offset = | |
591 | IEEE80211_HT_PARAM_CHA_SEC_BELOW; | |
592 | ctx->ht.is_40mhz = true; | |
593 | } else if (conf_is_ht40_plus(conf)) { | |
594 | ctx->ht.extension_chan_offset = | |
595 | IEEE80211_HT_PARAM_CHA_SEC_ABOVE; | |
596 | ctx->ht.is_40mhz = true; | |
597 | } else { | |
598 | ctx->ht.extension_chan_offset = | |
599 | IEEE80211_HT_PARAM_CHA_SEC_NONE; | |
600 | ctx->ht.is_40mhz = false; | |
601 | } | |
602 | } else | |
603 | ctx->ht.is_40mhz = false; | |
604 | ||
605 | /* | |
606 | * Default to no protection. Protection mode will | |
607 | * later be set from BSS config in iwl_ht_conf | |
608 | */ | |
609 | ctx->ht.protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
610 | ||
611 | /* if we are switching from ht to 2.4 clear flags | |
612 | * from any ht related info since 2.4 does not | |
613 | * support ht */ | |
614 | if (le16_to_cpu(ctx->staging.channel) != | |
615 | channel->hw_value) | |
616 | ctx->staging.flags = 0; | |
617 | ||
618 | iwl_set_rxon_channel(priv, channel, ctx); | |
619 | iwl_set_rxon_ht(priv, &priv->current_ht_config); | |
620 | ||
621 | iwl_set_flags_for_band(priv, ctx, channel->band, | |
622 | ctx->vif); | |
623 | } | |
624 | ||
10b15e6f | 625 | spin_unlock_irqrestore(&priv->shrd->lock, flags); |
2295c66b JB |
626 | |
627 | iwl_update_bcast_stations(priv); | |
628 | ||
629 | /* | |
630 | * The list of supported rates and rate mask can be different | |
631 | * for each band; since the band may have changed, reset | |
632 | * the rate mask to what mac80211 lists. | |
633 | */ | |
634 | iwl_set_rate(priv); | |
635 | } | |
636 | ||
637 | if (changed & (IEEE80211_CONF_CHANGE_PS | | |
638 | IEEE80211_CONF_CHANGE_IDLE)) { | |
639 | ret = iwl_power_update_mode(priv, false); | |
640 | if (ret) | |
641 | IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); | |
642 | } | |
643 | ||
644 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
645 | IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n", | |
646 | priv->tx_power_user_lmt, conf->power_level); | |
647 | ||
648 | iwl_set_tx_power(priv, conf->power_level, false); | |
649 | } | |
650 | ||
651 | for_each_context(priv, ctx) { | |
652 | if (!memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
653 | continue; | |
654 | iwlagn_commit_rxon(priv, ctx); | |
655 | } | |
656 | out: | |
6ac2f839 | 657 | mutex_unlock(&priv->shrd->mutex); |
770c72c4 WYG |
658 | IWL_DEBUG_MAC80211(priv, "leave\n"); |
659 | ||
2295c66b JB |
660 | return ret; |
661 | } | |
662 | ||
2295c66b JB |
663 | static void iwlagn_check_needed_chains(struct iwl_priv *priv, |
664 | struct iwl_rxon_context *ctx, | |
665 | struct ieee80211_bss_conf *bss_conf) | |
666 | { | |
667 | struct ieee80211_vif *vif = ctx->vif; | |
668 | struct iwl_rxon_context *tmp; | |
669 | struct ieee80211_sta *sta; | |
670 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
850bedcc | 671 | struct ieee80211_sta_ht_cap *ht_cap; |
2295c66b JB |
672 | bool need_multiple; |
673 | ||
6ac2f839 | 674 | lockdep_assert_held(&priv->shrd->mutex); |
2295c66b JB |
675 | |
676 | switch (vif->type) { | |
677 | case NL80211_IFTYPE_STATION: | |
678 | rcu_read_lock(); | |
679 | sta = ieee80211_find_sta(vif, bss_conf->bssid); | |
850bedcc | 680 | if (!sta) { |
2295c66b JB |
681 | /* |
682 | * If at all, this can only happen through a race | |
683 | * when the AP disconnects us while we're still | |
684 | * setting up the connection, in that case mac80211 | |
685 | * will soon tell us about that. | |
686 | */ | |
687 | need_multiple = false; | |
850bedcc JB |
688 | rcu_read_unlock(); |
689 | break; | |
690 | } | |
691 | ||
692 | ht_cap = &sta->ht_cap; | |
693 | ||
694 | need_multiple = true; | |
695 | ||
696 | /* | |
697 | * If the peer advertises no support for receiving 2 and 3 | |
698 | * stream MCS rates, it can't be transmitting them either. | |
699 | */ | |
700 | if (ht_cap->mcs.rx_mask[1] == 0 && | |
701 | ht_cap->mcs.rx_mask[2] == 0) { | |
702 | need_multiple = false; | |
703 | } else if (!(ht_cap->mcs.tx_params & | |
704 | IEEE80211_HT_MCS_TX_DEFINED)) { | |
705 | /* If it can't TX MCS at all ... */ | |
706 | need_multiple = false; | |
707 | } else if (ht_cap->mcs.tx_params & | |
708 | IEEE80211_HT_MCS_TX_RX_DIFF) { | |
709 | int maxstreams; | |
710 | ||
711 | /* | |
712 | * But if it can receive them, it might still not | |
713 | * be able to transmit them, which is what we need | |
714 | * to check here -- so check the number of streams | |
715 | * it advertises for TX (if different from RX). | |
716 | */ | |
717 | ||
718 | maxstreams = (ht_cap->mcs.tx_params & | |
719 | IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK); | |
720 | maxstreams >>= | |
721 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
722 | maxstreams += 1; | |
723 | ||
724 | if (maxstreams <= 1) | |
725 | need_multiple = false; | |
2295c66b | 726 | } |
850bedcc | 727 | |
2295c66b JB |
728 | rcu_read_unlock(); |
729 | break; | |
730 | case NL80211_IFTYPE_ADHOC: | |
731 | /* currently */ | |
732 | need_multiple = false; | |
733 | break; | |
734 | default: | |
735 | /* only AP really */ | |
736 | need_multiple = true; | |
737 | break; | |
738 | } | |
739 | ||
740 | ctx->ht_need_multiple_chains = need_multiple; | |
741 | ||
742 | if (!need_multiple) { | |
743 | /* check all contexts */ | |
744 | for_each_context(priv, tmp) { | |
745 | if (!tmp->vif) | |
746 | continue; | |
747 | if (tmp->ht_need_multiple_chains) { | |
748 | need_multiple = true; | |
749 | break; | |
750 | } | |
751 | } | |
752 | } | |
753 | ||
754 | ht_conf->single_chain_sufficient = !need_multiple; | |
755 | } | |
756 | ||
5c3d29fc DF |
757 | static void iwlagn_chain_noise_reset(struct iwl_priv *priv) |
758 | { | |
759 | struct iwl_chain_noise_data *data = &priv->chain_noise_data; | |
760 | int ret; | |
761 | ||
762 | if ((data->state == IWL_CHAIN_NOISE_ALIVE) && | |
763 | iwl_is_any_associated(priv)) { | |
764 | struct iwl_calib_chain_noise_reset_cmd cmd; | |
765 | ||
766 | /* clear data for chain noise calibration algorithm */ | |
767 | data->chain_noise_a = 0; | |
768 | data->chain_noise_b = 0; | |
769 | data->chain_noise_c = 0; | |
770 | data->chain_signal_a = 0; | |
771 | data->chain_signal_b = 0; | |
772 | data->chain_signal_c = 0; | |
773 | data->beacon_count = 0; | |
774 | ||
775 | memset(&cmd, 0, sizeof(cmd)); | |
776 | iwl_set_calib_hdr(&cmd.hdr, | |
898ed67b | 777 | priv->phy_calib_chain_noise_reset_cmd); |
e6bb4c9c | 778 | ret = iwl_trans_send_cmd_pdu(trans(priv), |
5c3d29fc DF |
779 | REPLY_PHY_CALIBRATION_CMD, |
780 | CMD_SYNC, sizeof(cmd), &cmd); | |
781 | if (ret) | |
782 | IWL_ERR(priv, | |
783 | "Could not send REPLY_PHY_CALIBRATION_CMD\n"); | |
784 | data->state = IWL_CHAIN_NOISE_ACCUMULATE; | |
785 | IWL_DEBUG_CALIB(priv, "Run chain_noise_calibrate\n"); | |
786 | } | |
787 | } | |
788 | ||
2295c66b JB |
789 | void iwlagn_bss_info_changed(struct ieee80211_hw *hw, |
790 | struct ieee80211_vif *vif, | |
791 | struct ieee80211_bss_conf *bss_conf, | |
792 | u32 changes) | |
793 | { | |
794 | struct iwl_priv *priv = hw->priv; | |
795 | struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif); | |
796 | int ret; | |
797 | bool force = false; | |
798 | ||
6ac2f839 | 799 | mutex_lock(&priv->shrd->mutex); |
2295c66b | 800 | |
845a9c0d | 801 | if (unlikely(!iwl_is_ready(priv->shrd))) { |
14a085e7 | 802 | IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); |
6ac2f839 | 803 | mutex_unlock(&priv->shrd->mutex); |
ae0b693c SZ |
804 | return; |
805 | } | |
806 | ||
807 | if (unlikely(!ctx->vif)) { | |
808 | IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n"); | |
6ac2f839 | 809 | mutex_unlock(&priv->shrd->mutex); |
893654de JB |
810 | return; |
811 | } | |
812 | ||
2295c66b JB |
813 | if (changes & BSS_CHANGED_BEACON_INT) |
814 | force = true; | |
815 | ||
816 | if (changes & BSS_CHANGED_QOS) { | |
817 | ctx->qos_data.qos_active = bss_conf->qos; | |
818 | iwlagn_update_qos(priv, ctx); | |
819 | } | |
820 | ||
821 | ctx->staging.assoc_id = cpu_to_le16(vif->bss_conf.aid); | |
822 | if (vif->bss_conf.use_short_preamble) | |
823 | ctx->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK; | |
824 | else | |
825 | ctx->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK; | |
826 | ||
827 | if (changes & BSS_CHANGED_ASSOC) { | |
828 | if (bss_conf->assoc) { | |
2295c66b JB |
829 | priv->timestamp = bss_conf->timestamp; |
830 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
831 | } else { | |
68b99311 GT |
832 | /* |
833 | * If we disassociate while there are pending | |
834 | * frames, just wake up the queues and let the | |
835 | * frames "escape" ... This shouldn't really | |
836 | * be happening to start with, but we should | |
837 | * not get stuck in this case either since it | |
838 | * can happen if userspace gets confused. | |
839 | */ | |
840 | if (ctx->last_tx_rejected) { | |
841 | ctx->last_tx_rejected = false; | |
e13c0c59 EG |
842 | iwl_trans_wake_any_queue(trans(priv), |
843 | ctx->ctxid); | |
68b99311 | 844 | } |
2295c66b | 845 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; |
c8ac61cf JB |
846 | |
847 | if (ctx->ctxid == IWL_RXON_CTX_BSS) | |
848 | priv->have_rekey_data = false; | |
2295c66b | 849 | } |
207ecc5e MV |
850 | |
851 | iwlagn_bt_coex_rssi_monitor(priv); | |
2295c66b JB |
852 | } |
853 | ||
854 | if (ctx->ht.enabled) { | |
855 | ctx->ht.protection = bss_conf->ht_operation_mode & | |
856 | IEEE80211_HT_OP_MODE_PROTECTION; | |
857 | ctx->ht.non_gf_sta_present = !!(bss_conf->ht_operation_mode & | |
858 | IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); | |
859 | iwlagn_check_needed_chains(priv, ctx, bss_conf); | |
b2769b84 | 860 | iwl_set_rxon_ht(priv, &priv->current_ht_config); |
2295c66b JB |
861 | } |
862 | ||
e3f10cea | 863 | iwlagn_set_rxon_chain(priv, ctx); |
2295c66b JB |
864 | |
865 | if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ)) | |
866 | ctx->staging.flags |= RXON_FLG_TGG_PROTECT_MSK; | |
867 | else | |
868 | ctx->staging.flags &= ~RXON_FLG_TGG_PROTECT_MSK; | |
869 | ||
870 | if (bss_conf->use_cts_prot) | |
871 | ctx->staging.flags |= RXON_FLG_SELF_CTS_EN; | |
872 | else | |
873 | ctx->staging.flags &= ~RXON_FLG_SELF_CTS_EN; | |
874 | ||
875 | memcpy(ctx->staging.bssid_addr, bss_conf->bssid, ETH_ALEN); | |
876 | ||
877 | if (vif->type == NL80211_IFTYPE_AP || | |
878 | vif->type == NL80211_IFTYPE_ADHOC) { | |
879 | if (vif->bss_conf.enable_beacon) { | |
880 | ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; | |
881 | priv->beacon_ctx = ctx; | |
882 | } else { | |
883 | ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; | |
884 | priv->beacon_ctx = NULL; | |
885 | } | |
886 | } | |
887 | ||
888 | if (force || memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
889 | iwlagn_commit_rxon(priv, ctx); | |
890 | ||
8da8e628 JB |
891 | if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc) { |
892 | /* | |
893 | * The chain noise calibration will enable PM upon | |
894 | * completion. If calibration has already been run | |
895 | * then we need to enable power management here. | |
896 | */ | |
897 | if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE) | |
898 | iwl_power_update_mode(priv, false); | |
899 | ||
900 | /* Enable RX differential gain and sensitivity calibrations */ | |
5c3d29fc DF |
901 | if (!priv->disable_chain_noise_cal) |
902 | iwlagn_chain_noise_reset(priv); | |
8da8e628 | 903 | priv->start_calib = 1; |
debcf734 | 904 | WARN_ON(ctx->preauth_bssid); |
8da8e628 JB |
905 | } |
906 | ||
2295c66b JB |
907 | if (changes & BSS_CHANGED_IBSS) { |
908 | ret = iwlagn_manage_ibss_station(priv, vif, | |
909 | bss_conf->ibss_joined); | |
910 | if (ret) | |
911 | IWL_ERR(priv, "failed to %s IBSS station %pM\n", | |
912 | bss_conf->ibss_joined ? "add" : "remove", | |
913 | bss_conf->bssid); | |
914 | } | |
915 | ||
bd50a8ab JB |
916 | if (changes & BSS_CHANGED_BEACON && vif->type == NL80211_IFTYPE_ADHOC && |
917 | priv->beacon_ctx) { | |
918 | if (iwlagn_update_beacon(priv, vif)) | |
919 | IWL_ERR(priv, "Error sending IBSS beacon\n"); | |
920 | } | |
921 | ||
6ac2f839 | 922 | mutex_unlock(&priv->shrd->mutex); |
2295c66b | 923 | } |
ae79d23d JB |
924 | |
925 | void iwlagn_post_scan(struct iwl_priv *priv) | |
926 | { | |
927 | struct iwl_rxon_context *ctx; | |
928 | ||
c2b821d7 WYG |
929 | /* |
930 | * We do not commit power settings while scan is pending, | |
931 | * do it now if the settings changed. | |
932 | */ | |
933 | iwl_power_set_mode(priv, &priv->power_data.sleep_cmd_next, false); | |
934 | iwl_set_tx_power(priv, priv->tx_power_next, false); | |
935 | ||
ae79d23d JB |
936 | /* |
937 | * Since setting the RXON may have been deferred while | |
938 | * performing the scan, fire one off if needed | |
939 | */ | |
940 | for_each_context(priv, ctx) | |
941 | if (memcmp(&ctx->staging, &ctx->active, sizeof(ctx->staging))) | |
942 | iwlagn_commit_rxon(priv, ctx); | |
943 | ||
e3f10cea | 944 | iwlagn_set_pan_params(priv); |
ae79d23d | 945 | } |