1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3  * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
4  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5  * Copyright (C) 2016-2017 Intel Deutschland GmbH
6  */
7 #include <linux/kernel.h>
8 #include <linux/slab.h>
9 #include <linux/skbuff.h>
10 #include <linux/netdevice.h>
11 #include <linux/etherdevice.h>
12 #include <linux/ip.h>
13 #include <linux/if_arp.h>
14 #include <linux/time.h>
15 #include <net/mac80211.h>
16 #include <net/ieee80211_radiotap.h>
17 #include <net/tcp.h>
18 
19 #include "iwl-drv.h"
20 #include "iwl-op-mode.h"
21 #include "iwl-io.h"
22 #include "mvm.h"
23 #include "sta.h"
24 #include "time-event.h"
25 #include "iwl-eeprom-parse.h"
26 #include "iwl-phy-db.h"
27 #include "testmode.h"
28 #include "fw/error-dump.h"
29 #include "iwl-prph.h"
30 #include "iwl-nvm-parse.h"
31 
32 static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
33 	{
34 		.max = 1,
35 		.types = BIT(NL80211_IFTYPE_STATION),
36 	},
37 	{
38 		.max = 1,
39 		.types = BIT(NL80211_IFTYPE_AP) |
40 			BIT(NL80211_IFTYPE_P2P_CLIENT) |
41 			BIT(NL80211_IFTYPE_P2P_GO),
42 	},
43 	{
44 		.max = 1,
45 		.types = BIT(NL80211_IFTYPE_P2P_DEVICE),
46 	},
47 };
48 
49 static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
50 	{
51 		.num_different_channels = 2,
52 		.max_interfaces = 3,
53 		.limits = iwl_mvm_limits,
54 		.n_limits = ARRAY_SIZE(iwl_mvm_limits),
55 	},
56 };
57 
58 static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
59 	.max_peers = IWL_MVM_TOF_MAX_APS,
60 	.report_ap_tsf = 1,
61 	.randomize_mac_addr = 1,
62 
63 	.ftm = {
64 		.supported = 1,
65 		.asap = 1,
66 		.non_asap = 1,
67 		.request_lci = 1,
68 		.request_civicloc = 1,
69 		.trigger_based = 1,
70 		.non_trigger_based = 1,
71 		.max_bursts_exponent = -1, /* all supported */
72 		.max_ftms_per_burst = 0, /* no limits */
73 		.bandwidths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
74 			      BIT(NL80211_CHAN_WIDTH_20) |
75 			      BIT(NL80211_CHAN_WIDTH_40) |
76 			      BIT(NL80211_CHAN_WIDTH_80) |
77 			      BIT(NL80211_CHAN_WIDTH_160),
78 		.preambles = BIT(NL80211_PREAMBLE_LEGACY) |
79 			     BIT(NL80211_PREAMBLE_HT) |
80 			     BIT(NL80211_PREAMBLE_VHT) |
81 			     BIT(NL80211_PREAMBLE_HE),
82 	},
83 };
84 
85 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
86 				 enum set_key_cmd cmd,
87 				 struct ieee80211_vif *vif,
88 				 struct ieee80211_sta *sta,
89 				 struct ieee80211_key_conf *key);
90 
iwl_mvm_reset_phy_ctxts(struct iwl_mvm * mvm)91 static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
92 {
93 	int i;
94 
95 	memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
96 	for (i = 0; i < NUM_PHY_CTX; i++) {
97 		mvm->phy_ctxts[i].id = i;
98 		mvm->phy_ctxts[i].ref = 0;
99 	}
100 }
101 
iwl_mvm_get_regdomain(struct wiphy * wiphy,const char * alpha2,enum iwl_mcc_source src_id,bool * changed)102 struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
103 						  const char *alpha2,
104 						  enum iwl_mcc_source src_id,
105 						  bool *changed)
106 {
107 	struct ieee80211_regdomain *regd = NULL;
108 	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
109 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
110 	struct iwl_mcc_update_resp *resp;
111 	u8 resp_ver;
112 
113 	IWL_DEBUG_LAR(mvm, "Getting regdomain data for %s from FW\n", alpha2);
114 
115 	lockdep_assert_held(&mvm->mutex);
116 
117 	resp = iwl_mvm_update_mcc(mvm, alpha2, src_id);
118 	if (IS_ERR_OR_NULL(resp)) {
119 		IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
120 			      PTR_ERR_OR_ZERO(resp));
121 		resp = NULL;
122 		goto out;
123 	}
124 
125 	if (changed) {
126 		u32 status = le32_to_cpu(resp->status);
127 
128 		*changed = (status == MCC_RESP_NEW_CHAN_PROFILE ||
129 			    status == MCC_RESP_ILLEGAL);
130 	}
131 	resp_ver = iwl_fw_lookup_notif_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
132 					   MCC_UPDATE_CMD, 0);
133 	IWL_DEBUG_LAR(mvm, "MCC update response version: %d\n", resp_ver);
134 
135 	regd = iwl_parse_nvm_mcc_info(mvm->trans->dev, mvm->cfg,
136 				      __le32_to_cpu(resp->n_channels),
137 				      resp->channels,
138 				      __le16_to_cpu(resp->mcc),
139 				      __le16_to_cpu(resp->geo_info),
140 				      __le16_to_cpu(resp->cap), resp_ver);
141 	/* Store the return source id */
142 	src_id = resp->source_id;
143 	if (IS_ERR_OR_NULL(regd)) {
144 		IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
145 			      PTR_ERR_OR_ZERO(regd));
146 		goto out;
147 	}
148 
149 	IWL_DEBUG_LAR(mvm, "setting alpha2 from FW to %s (0x%x, 0x%x) src=%d\n",
150 		      regd->alpha2, regd->alpha2[0], regd->alpha2[1], src_id);
151 	mvm->lar_regdom_set = true;
152 	mvm->mcc_src = src_id;
153 
154 	iwl_mei_set_country_code(__le16_to_cpu(resp->mcc));
155 
156 out:
157 	kfree(resp);
158 	return regd;
159 }
160 
iwl_mvm_update_changed_regdom(struct iwl_mvm * mvm)161 void iwl_mvm_update_changed_regdom(struct iwl_mvm *mvm)
162 {
163 	bool changed;
164 	struct ieee80211_regdomain *regd;
165 
166 	if (!iwl_mvm_is_lar_supported(mvm))
167 		return;
168 
169 	regd = iwl_mvm_get_current_regdomain(mvm, &changed);
170 	if (!IS_ERR_OR_NULL(regd)) {
171 		/* only update the regulatory core if changed */
172 		if (changed)
173 			regulatory_set_wiphy_regd(mvm->hw->wiphy, regd);
174 
175 		kfree(regd);
176 	}
177 }
178 
iwl_mvm_get_current_regdomain(struct iwl_mvm * mvm,bool * changed)179 struct ieee80211_regdomain *iwl_mvm_get_current_regdomain(struct iwl_mvm *mvm,
180 							  bool *changed)
181 {
182 	return iwl_mvm_get_regdomain(mvm->hw->wiphy, "ZZ",
183 				     iwl_mvm_is_wifi_mcc_supported(mvm) ?
184 				     MCC_SOURCE_GET_CURRENT :
185 				     MCC_SOURCE_OLD_FW, changed);
186 }
187 
iwl_mvm_init_fw_regd(struct iwl_mvm * mvm)188 int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
189 {
190 	enum iwl_mcc_source used_src;
191 	struct ieee80211_regdomain *regd;
192 	int ret;
193 	bool changed;
194 	const struct ieee80211_regdomain *r =
195 			wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd);
196 
197 	if (!r)
198 		return -ENOENT;
199 
200 	/* save the last source in case we overwrite it below */
201 	used_src = mvm->mcc_src;
202 	if (iwl_mvm_is_wifi_mcc_supported(mvm)) {
203 		/* Notify the firmware we support wifi location updates */
204 		regd = iwl_mvm_get_current_regdomain(mvm, NULL);
205 		if (!IS_ERR_OR_NULL(regd))
206 			kfree(regd);
207 	}
208 
209 	/* Now set our last stored MCC and source */
210 	regd = iwl_mvm_get_regdomain(mvm->hw->wiphy, r->alpha2, used_src,
211 				     &changed);
212 	if (IS_ERR_OR_NULL(regd))
213 		return -EIO;
214 
215 	/* update cfg80211 if the regdomain was changed */
216 	if (changed)
217 		ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
218 	else
219 		ret = 0;
220 
221 	kfree(regd);
222 	return ret;
223 }
224 
225 static const u8 he_if_types_ext_capa_sta[] = {
226 	 [0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
227 	 [2] = WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT,
228 	 [7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
229 };
230 
231 static const struct wiphy_iftype_ext_capab he_iftypes_ext_capa[] = {
232 	{
233 		.iftype = NL80211_IFTYPE_STATION,
234 		.extended_capabilities = he_if_types_ext_capa_sta,
235 		.extended_capabilities_mask = he_if_types_ext_capa_sta,
236 		.extended_capabilities_len = sizeof(he_if_types_ext_capa_sta),
237 	},
238 };
239 
240 static int
iwl_mvm_op_get_antenna(struct ieee80211_hw * hw,u32 * tx_ant,u32 * rx_ant)241 iwl_mvm_op_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
242 {
243 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
244 	*tx_ant = iwl_mvm_get_valid_tx_ant(mvm);
245 	*rx_ant = iwl_mvm_get_valid_rx_ant(mvm);
246 	return 0;
247 }
248 
iwl_mvm_mac_setup_register(struct iwl_mvm * mvm)249 int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
250 {
251 	struct ieee80211_hw *hw = mvm->hw;
252 	int num_mac, ret, i;
253 	static const u32 mvm_ciphers[] = {
254 		WLAN_CIPHER_SUITE_WEP40,
255 		WLAN_CIPHER_SUITE_WEP104,
256 		WLAN_CIPHER_SUITE_TKIP,
257 		WLAN_CIPHER_SUITE_CCMP,
258 	};
259 #ifdef CONFIG_PM_SLEEP
260 	bool unified = fw_has_capa(&mvm->fw->ucode_capa,
261 				   IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
262 #endif
263 
264 	/* Tell mac80211 our characteristics */
265 	ieee80211_hw_set(hw, SIGNAL_DBM);
266 	ieee80211_hw_set(hw, SPECTRUM_MGMT);
267 	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
268 	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
269 	ieee80211_hw_set(hw, SUPPORTS_PS);
270 	ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
271 	ieee80211_hw_set(hw, AMPDU_AGGREGATION);
272 	ieee80211_hw_set(hw, TIMING_BEACON_ONLY);
273 	ieee80211_hw_set(hw, CONNECTION_MONITOR);
274 	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
275 	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
276 	ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
277 	ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
278 	ieee80211_hw_set(hw, NEEDS_UNIQUE_STA_ADDR);
279 	ieee80211_hw_set(hw, DEAUTH_NEED_MGD_TX_PREP);
280 	ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
281 	ieee80211_hw_set(hw, BUFF_MMPDU_TXQ);
282 	ieee80211_hw_set(hw, STA_MMPDU_TXQ);
283 	/*
284 	 * On older devices, enabling TX A-MSDU occasionally leads to
285 	 * something getting messed up, the command read from the FIFO
286 	 * gets out of sync and isn't a TX command, so that we have an
287 	 * assert EDC.
288 	 *
289 	 * It's not clear where the bug is, but since we didn't used to
290 	 * support A-MSDU until moving the mac80211 iTXQs, just leave it
291 	 * for older devices. We also don't see this issue on any newer
292 	 * devices.
293 	 */
294 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_9000)
295 		ieee80211_hw_set(hw, TX_AMSDU);
296 	ieee80211_hw_set(hw, TX_FRAG_LIST);
297 
298 	if (iwl_mvm_has_tlc_offload(mvm)) {
299 		ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
300 		ieee80211_hw_set(hw, HAS_RATE_CONTROL);
301 	}
302 
303 	if (iwl_mvm_has_new_rx_api(mvm))
304 		ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
305 
306 	if (fw_has_capa(&mvm->fw->ucode_capa,
307 			IWL_UCODE_TLV_CAPA_STA_PM_NOTIF)) {
308 		ieee80211_hw_set(hw, AP_LINK_PS);
309 	} else if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) {
310 		/*
311 		 * we absolutely need this for the new TX API since that comes
312 		 * with many more queues than the current code can deal with
313 		 * for station powersave
314 		 */
315 		return -EINVAL;
316 	}
317 
318 	if (mvm->trans->num_rx_queues > 1)
319 		ieee80211_hw_set(hw, USES_RSS);
320 
321 	if (mvm->trans->max_skb_frags)
322 		hw->netdev_features = NETIF_F_HIGHDMA | NETIF_F_SG;
323 
324 	hw->queues = IEEE80211_NUM_ACS;
325 	hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
326 	hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
327 				    IEEE80211_RADIOTAP_MCS_HAVE_STBC;
328 	hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC |
329 		IEEE80211_RADIOTAP_VHT_KNOWN_BEAMFORMED;
330 
331 	hw->radiotap_timestamp.units_pos =
332 		IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US |
333 		IEEE80211_RADIOTAP_TIMESTAMP_SPOS_PLCP_SIG_ACQ;
334 	/* this is the case for CCK frames, it's better (only 8) for OFDM */
335 	hw->radiotap_timestamp.accuracy = 22;
336 
337 	if (!iwl_mvm_has_tlc_offload(mvm))
338 		hw->rate_control_algorithm = RS_NAME;
339 
340 	hw->uapsd_queues = IWL_MVM_UAPSD_QUEUES;
341 	hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
342 	hw->max_tx_fragments = mvm->trans->max_skb_frags;
343 
344 	BUILD_BUG_ON(ARRAY_SIZE(mvm->ciphers) < ARRAY_SIZE(mvm_ciphers) + 6);
345 	memcpy(mvm->ciphers, mvm_ciphers, sizeof(mvm_ciphers));
346 	hw->wiphy->n_cipher_suites = ARRAY_SIZE(mvm_ciphers);
347 	hw->wiphy->cipher_suites = mvm->ciphers;
348 
349 	if (iwl_mvm_has_new_rx_api(mvm)) {
350 		mvm->ciphers[hw->wiphy->n_cipher_suites] =
351 			WLAN_CIPHER_SUITE_GCMP;
352 		hw->wiphy->n_cipher_suites++;
353 		mvm->ciphers[hw->wiphy->n_cipher_suites] =
354 			WLAN_CIPHER_SUITE_GCMP_256;
355 		hw->wiphy->n_cipher_suites++;
356 	}
357 
358 	if (iwlwifi_mod_params.swcrypto)
359 		IWL_ERR(mvm,
360 			"iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter\n");
361 	if (!iwlwifi_mod_params.bt_coex_active)
362 		IWL_ERR(mvm,
363 			"iwlmvm doesn't allow to disable BT Coex, check bt_coex_active module parameter\n");
364 
365 	ieee80211_hw_set(hw, MFP_CAPABLE);
366 	mvm->ciphers[hw->wiphy->n_cipher_suites] = WLAN_CIPHER_SUITE_AES_CMAC;
367 	hw->wiphy->n_cipher_suites++;
368 	if (iwl_mvm_has_new_rx_api(mvm)) {
369 		mvm->ciphers[hw->wiphy->n_cipher_suites] =
370 			WLAN_CIPHER_SUITE_BIP_GMAC_128;
371 		hw->wiphy->n_cipher_suites++;
372 		mvm->ciphers[hw->wiphy->n_cipher_suites] =
373 			WLAN_CIPHER_SUITE_BIP_GMAC_256;
374 		hw->wiphy->n_cipher_suites++;
375 	}
376 
377 	if (fw_has_capa(&mvm->fw->ucode_capa,
378 			IWL_UCODE_TLV_CAPA_FTM_CALIBRATED)) {
379 		wiphy_ext_feature_set(hw->wiphy,
380 				      NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
381 		hw->wiphy->pmsr_capa = &iwl_mvm_pmsr_capa;
382 	}
383 
384 	if (fw_has_capa(&mvm->fw->ucode_capa,
385 			IWL_UCODE_TLV_CAPA_BIGTK_SUPPORT))
386 		wiphy_ext_feature_set(hw->wiphy,
387 				      NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT);
388 
389 	ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
390 	hw->wiphy->features |=
391 		NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR |
392 		NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR |
393 		NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
394 
395 	hw->sta_data_size = sizeof(struct iwl_mvm_sta);
396 	hw->vif_data_size = sizeof(struct iwl_mvm_vif);
397 	hw->chanctx_data_size = sizeof(u16);
398 	hw->txq_data_size = sizeof(struct iwl_mvm_txq);
399 
400 	hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
401 		BIT(NL80211_IFTYPE_P2P_CLIENT) |
402 		BIT(NL80211_IFTYPE_AP) |
403 		BIT(NL80211_IFTYPE_P2P_GO) |
404 		BIT(NL80211_IFTYPE_P2P_DEVICE) |
405 		BIT(NL80211_IFTYPE_ADHOC);
406 
407 	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
408 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
409 
410 	/* The new Tx API does not allow to pass the key or keyid of a MPDU to
411 	 * the hw, preventing us to control which key(id) to use per MPDU.
412 	 * Till that's fixed we can't use Extended Key ID for the newer cards.
413 	 */
414 	if (!iwl_mvm_has_new_tx_api(mvm))
415 		wiphy_ext_feature_set(hw->wiphy,
416 				      NL80211_EXT_FEATURE_EXT_KEY_ID);
417 	hw->wiphy->features |= NL80211_FEATURE_HT_IBSS;
418 
419 	hw->wiphy->regulatory_flags |= REGULATORY_ENABLE_RELAX_NO_IR;
420 	if (iwl_mvm_is_lar_supported(mvm))
421 		hw->wiphy->regulatory_flags |= REGULATORY_WIPHY_SELF_MANAGED;
422 	else
423 		hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
424 					       REGULATORY_DISABLE_BEACON_HINTS;
425 
426 	hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
427 	hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
428 	hw->wiphy->flags |= WIPHY_FLAG_SPLIT_SCAN_6GHZ;
429 
430 	hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
431 	hw->wiphy->n_iface_combinations =
432 		ARRAY_SIZE(iwl_mvm_iface_combinations);
433 
434 	hw->wiphy->max_remain_on_channel_duration = 10000;
435 	hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
436 
437 	/* Extract MAC address */
438 	memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
439 	hw->wiphy->addresses = mvm->addresses;
440 	hw->wiphy->n_addresses = 1;
441 
442 	/* Extract additional MAC addresses if available */
443 	num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
444 		min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
445 
446 	for (i = 1; i < num_mac; i++) {
447 		memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
448 		       ETH_ALEN);
449 		mvm->addresses[i].addr[5]++;
450 		hw->wiphy->n_addresses++;
451 	}
452 
453 	iwl_mvm_reset_phy_ctxts(mvm);
454 
455 	hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
456 
457 	hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
458 
459 	BUILD_BUG_ON(IWL_MVM_SCAN_STOPPING_MASK & IWL_MVM_SCAN_MASK);
460 	BUILD_BUG_ON(IWL_MVM_MAX_UMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK) ||
461 		     IWL_MVM_MAX_LMAC_SCANS > HWEIGHT32(IWL_MVM_SCAN_MASK));
462 
463 	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
464 		mvm->max_scans = IWL_MVM_MAX_UMAC_SCANS;
465 	else
466 		mvm->max_scans = IWL_MVM_MAX_LMAC_SCANS;
467 
468 	if (mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels)
469 		hw->wiphy->bands[NL80211_BAND_2GHZ] =
470 			&mvm->nvm_data->bands[NL80211_BAND_2GHZ];
471 	if (mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels) {
472 		hw->wiphy->bands[NL80211_BAND_5GHZ] =
473 			&mvm->nvm_data->bands[NL80211_BAND_5GHZ];
474 
475 		if (fw_has_capa(&mvm->fw->ucode_capa,
476 				IWL_UCODE_TLV_CAPA_BEAMFORMER) &&
477 		    fw_has_api(&mvm->fw->ucode_capa,
478 			       IWL_UCODE_TLV_API_LQ_SS_PARAMS))
479 			hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap |=
480 				IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
481 	}
482 	if (fw_has_capa(&mvm->fw->ucode_capa,
483 			IWL_UCODE_TLV_CAPA_PSC_CHAN_SUPPORT) &&
484 	    mvm->nvm_data->bands[NL80211_BAND_6GHZ].n_channels)
485 		hw->wiphy->bands[NL80211_BAND_6GHZ] =
486 			&mvm->nvm_data->bands[NL80211_BAND_6GHZ];
487 
488 	hw->wiphy->hw_version = mvm->trans->hw_id;
489 
490 	if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
491 		hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
492 	else
493 		hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
494 
495 	hw->wiphy->max_sched_scan_reqs = 1;
496 	hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
497 	hw->wiphy->max_match_sets = iwl_umac_scan_get_max_profiles(mvm->fw);
498 	/* we create the 802.11 header and zero length SSID IE. */
499 	hw->wiphy->max_sched_scan_ie_len =
500 		SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
501 	hw->wiphy->max_sched_scan_plans = IWL_MAX_SCHED_SCAN_PLANS;
502 	hw->wiphy->max_sched_scan_plan_interval = U16_MAX;
503 
504 	/*
505 	 * the firmware uses u8 for num of iterations, but 0xff is saved for
506 	 * infinite loop, so the maximum number of iterations is actually 254.
507 	 */
508 	hw->wiphy->max_sched_scan_plan_iterations = 254;
509 
510 	hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
511 			       NL80211_FEATURE_LOW_PRIORITY_SCAN |
512 			       NL80211_FEATURE_P2P_GO_OPPPS |
513 			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
514 			       NL80211_FEATURE_DYNAMIC_SMPS |
515 			       NL80211_FEATURE_STATIC_SMPS |
516 			       NL80211_FEATURE_SUPPORTS_WMM_ADMISSION;
517 
518 	if (fw_has_capa(&mvm->fw->ucode_capa,
519 			IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT))
520 		hw->wiphy->features |= NL80211_FEATURE_TX_POWER_INSERTION;
521 	if (fw_has_capa(&mvm->fw->ucode_capa,
522 			IWL_UCODE_TLV_CAPA_QUIET_PERIOD_SUPPORT))
523 		hw->wiphy->features |= NL80211_FEATURE_QUIET;
524 
525 	if (fw_has_capa(&mvm->fw->ucode_capa,
526 			IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT))
527 		hw->wiphy->features |=
528 			NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES;
529 
530 	if (fw_has_capa(&mvm->fw->ucode_capa,
531 			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
532 		hw->wiphy->features |= NL80211_FEATURE_WFA_TPC_IE_IN_PROBES;
533 
534 	if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_KEK_KCK_MATERIAL,
535 				  IWL_FW_CMD_VER_UNKNOWN) == 3)
536 		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK;
537 
538 	if (fw_has_api(&mvm->fw->ucode_capa,
539 		       IWL_UCODE_TLV_API_SCAN_TSF_REPORT)) {
540 		wiphy_ext_feature_set(hw->wiphy,
541 				      NL80211_EXT_FEATURE_SCAN_START_TIME);
542 		wiphy_ext_feature_set(hw->wiphy,
543 				      NL80211_EXT_FEATURE_BSS_PARENT_TSF);
544 	}
545 
546 	if (iwl_mvm_is_oce_supported(mvm)) {
547 		u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, 0);
548 
549 		wiphy_ext_feature_set(hw->wiphy,
550 			NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
551 		wiphy_ext_feature_set(hw->wiphy,
552 			NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
553 		wiphy_ext_feature_set(hw->wiphy,
554 			NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
555 
556 		/* Old firmware also supports probe deferral and suppression */
557 		if (scan_ver < 15)
558 			wiphy_ext_feature_set(hw->wiphy,
559 					      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
560 	}
561 
562 	if (mvm->nvm_data->sku_cap_11ax_enable &&
563 	    !iwlwifi_mod_params.disable_11ax) {
564 		hw->wiphy->iftype_ext_capab = he_iftypes_ext_capa;
565 		hw->wiphy->num_iftype_ext_capab =
566 			ARRAY_SIZE(he_iftypes_ext_capa);
567 
568 		ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
569 		ieee80211_hw_set(hw, SUPPORTS_ONLY_HE_MULTI_BSSID);
570 	}
571 
572 	mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
573 
574 #ifdef CONFIG_PM_SLEEP
575 	if ((unified || mvm->fw->img[IWL_UCODE_WOWLAN].num_sec) &&
576 	    mvm->trans->ops->d3_suspend &&
577 	    mvm->trans->ops->d3_resume &&
578 	    device_can_wakeup(mvm->trans->dev)) {
579 		mvm->wowlan.flags |= WIPHY_WOWLAN_MAGIC_PKT |
580 				     WIPHY_WOWLAN_DISCONNECT |
581 				     WIPHY_WOWLAN_EAP_IDENTITY_REQ |
582 				     WIPHY_WOWLAN_RFKILL_RELEASE |
583 				     WIPHY_WOWLAN_NET_DETECT;
584 		mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
585 				     WIPHY_WOWLAN_GTK_REKEY_FAILURE |
586 				     WIPHY_WOWLAN_4WAY_HANDSHAKE;
587 
588 		mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
589 		mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
590 		mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
591 		mvm->wowlan.max_nd_match_sets =
592 			iwl_umac_scan_get_max_profiles(mvm->fw);
593 		hw->wiphy->wowlan = &mvm->wowlan;
594 	}
595 #endif
596 
597 	ret = iwl_mvm_leds_init(mvm);
598 	if (ret)
599 		return ret;
600 
601 	if (fw_has_capa(&mvm->fw->ucode_capa,
602 			IWL_UCODE_TLV_CAPA_TDLS_SUPPORT)) {
603 		IWL_DEBUG_TDLS(mvm, "TDLS supported\n");
604 		hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;
605 		ieee80211_hw_set(hw, TDLS_WIDER_BW);
606 	}
607 
608 	if (fw_has_capa(&mvm->fw->ucode_capa,
609 			IWL_UCODE_TLV_CAPA_TDLS_CHANNEL_SWITCH)) {
610 		IWL_DEBUG_TDLS(mvm, "TDLS channel switch supported\n");
611 		hw->wiphy->features |= NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
612 	}
613 
614 	hw->netdev_features |= mvm->cfg->features;
615 	if (!iwl_mvm_is_csum_supported(mvm))
616 		hw->netdev_features &= ~IWL_CSUM_NETIF_FLAGS_MASK;
617 
618 	if (mvm->cfg->vht_mu_mimo_supported)
619 		wiphy_ext_feature_set(hw->wiphy,
620 				      NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
621 
622 	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PROTECTED_TWT))
623 		wiphy_ext_feature_set(hw->wiphy,
624 				      NL80211_EXT_FEATURE_PROTECTED_TWT);
625 
626 	iwl_mvm_vendor_cmds_register(mvm);
627 
628 	hw->wiphy->available_antennas_tx = iwl_mvm_get_valid_tx_ant(mvm);
629 	hw->wiphy->available_antennas_rx = iwl_mvm_get_valid_rx_ant(mvm);
630 
631 	ret = ieee80211_register_hw(mvm->hw);
632 	if (ret) {
633 		iwl_mvm_leds_exit(mvm);
634 	}
635 
636 	return ret;
637 }
638 
iwl_mvm_tx_skb(struct iwl_mvm * mvm,struct sk_buff * skb,struct ieee80211_sta * sta)639 static void iwl_mvm_tx_skb(struct iwl_mvm *mvm, struct sk_buff *skb,
640 			   struct ieee80211_sta *sta)
641 {
642 	if (likely(sta)) {
643 		if (likely(iwl_mvm_tx_skb_sta(mvm, skb, sta) == 0))
644 			return;
645 	} else {
646 		if (likely(iwl_mvm_tx_skb_non_sta(mvm, skb) == 0))
647 			return;
648 	}
649 
650 	ieee80211_free_txskb(mvm->hw, skb);
651 }
652 
iwl_mvm_mac_tx(struct ieee80211_hw * hw,struct ieee80211_tx_control * control,struct sk_buff * skb)653 static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
654 			   struct ieee80211_tx_control *control,
655 			   struct sk_buff *skb)
656 {
657 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
658 	struct ieee80211_sta *sta = control->sta;
659 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
660 	struct ieee80211_hdr *hdr = (void *)skb->data;
661 	bool offchannel = IEEE80211_SKB_CB(skb)->flags &
662 		IEEE80211_TX_CTL_TX_OFFCHAN;
663 
664 	if (iwl_mvm_is_radio_killed(mvm)) {
665 		IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
666 		goto drop;
667 	}
668 
669 	if (offchannel &&
670 	    !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status) &&
671 	    !test_bit(IWL_MVM_STATUS_ROC_AUX_RUNNING, &mvm->status))
672 		goto drop;
673 
674 	/*
675 	 * bufferable MMPDUs or MMPDUs on STA interfaces come via TXQs
676 	 * so we treat the others as broadcast
677 	 */
678 	if (ieee80211_is_mgmt(hdr->frame_control))
679 		sta = NULL;
680 
681 	/* If there is no sta, and it's not offchannel - send through AP */
682 	if (!sta && info->control.vif->type == NL80211_IFTYPE_STATION &&
683 	    !offchannel) {
684 		struct iwl_mvm_vif *mvmvif =
685 			iwl_mvm_vif_from_mac80211(info->control.vif);
686 		u8 ap_sta_id = READ_ONCE(mvmvif->ap_sta_id);
687 
688 		if (ap_sta_id < mvm->fw->ucode_capa.num_stations) {
689 			/* mac80211 holds rcu read lock */
690 			sta = rcu_dereference(mvm->fw_id_to_mac_id[ap_sta_id]);
691 			if (IS_ERR_OR_NULL(sta))
692 				goto drop;
693 		}
694 	}
695 
696 	iwl_mvm_tx_skb(mvm, skb, sta);
697 	return;
698  drop:
699 	ieee80211_free_txskb(hw, skb);
700 }
701 
iwl_mvm_mac_itxq_xmit(struct ieee80211_hw * hw,struct ieee80211_txq * txq)702 void iwl_mvm_mac_itxq_xmit(struct ieee80211_hw *hw, struct ieee80211_txq *txq)
703 {
704 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
705 	struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
706 	struct sk_buff *skb = NULL;
707 
708 	/*
709 	 * No need for threads to be pending here, they can leave the first
710 	 * taker all the work.
711 	 *
712 	 * mvmtxq->tx_request logic:
713 	 *
714 	 * If 0, no one is currently TXing, set to 1 to indicate current thread
715 	 * will now start TX and other threads should quit.
716 	 *
717 	 * If 1, another thread is currently TXing, set to 2 to indicate to
718 	 * that thread that there was another request. Since that request may
719 	 * have raced with the check whether the queue is empty, the TXing
720 	 * thread should check the queue's status one more time before leaving.
721 	 * This check is done in order to not leave any TX hanging in the queue
722 	 * until the next TX invocation (which may not even happen).
723 	 *
724 	 * If 2, another thread is currently TXing, and it will already double
725 	 * check the queue, so do nothing.
726 	 */
727 	if (atomic_fetch_add_unless(&mvmtxq->tx_request, 1, 2))
728 		return;
729 
730 	rcu_read_lock();
731 	do {
732 		while (likely(!mvmtxq->stopped &&
733 			      !test_bit(IWL_MVM_STATUS_IN_D3, &mvm->status))) {
734 			skb = ieee80211_tx_dequeue(hw, txq);
735 
736 			if (!skb) {
737 				if (txq->sta)
738 					IWL_DEBUG_TX(mvm,
739 						     "TXQ of sta %pM tid %d is now empty\n",
740 						     txq->sta->addr,
741 						     txq->tid);
742 				break;
743 			}
744 
745 			iwl_mvm_tx_skb(mvm, skb, txq->sta);
746 		}
747 	} while (atomic_dec_return(&mvmtxq->tx_request));
748 	rcu_read_unlock();
749 }
750 
iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw * hw,struct ieee80211_txq * txq)751 static void iwl_mvm_mac_wake_tx_queue(struct ieee80211_hw *hw,
752 				      struct ieee80211_txq *txq)
753 {
754 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
755 	struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);
756 
757 	/*
758 	 * Please note that racing is handled very carefully here:
759 	 * mvmtxq->txq_id is updated during allocation, and mvmtxq->list is
760 	 * deleted afterwards.
761 	 * This means that if:
762 	 * mvmtxq->txq_id != INVALID_QUEUE && list_empty(&mvmtxq->list):
763 	 *	queue is allocated and we can TX.
764 	 * mvmtxq->txq_id != INVALID_QUEUE && !list_empty(&mvmtxq->list):
765 	 *	a race, should defer the frame.
766 	 * mvmtxq->txq_id == INVALID_QUEUE && list_empty(&mvmtxq->list):
767 	 *	need to allocate the queue and defer the frame.
768 	 * mvmtxq->txq_id == INVALID_QUEUE && !list_empty(&mvmtxq->list):
769 	 *	queue is already scheduled for allocation, no need to allocate,
770 	 *	should defer the frame.
771 	 */
772 
773 	/* If the queue is allocated TX and return. */
774 	if (!txq->sta || mvmtxq->txq_id != IWL_MVM_INVALID_QUEUE) {
775 		/*
776 		 * Check that list is empty to avoid a race where txq_id is
777 		 * already updated, but the queue allocation work wasn't
778 		 * finished
779 		 */
780 		if (unlikely(txq->sta && !list_empty(&mvmtxq->list)))
781 			return;
782 
783 		iwl_mvm_mac_itxq_xmit(hw, txq);
784 		return;
785 	}
786 
787 	/* The list is being deleted only after the queue is fully allocated. */
788 	if (!list_empty(&mvmtxq->list))
789 		return;
790 
791 	list_add_tail(&mvmtxq->list, &mvm->add_stream_txqs);
792 	schedule_work(&mvm->add_stream_wk);
793 }
794 
795 #define CHECK_BA_TRIGGER(_mvm, _trig, _tid_bm, _tid, _fmt...)		\
796 	do {								\
797 		if (!(le16_to_cpu(_tid_bm) & BIT(_tid)))		\
798 			break;						\
799 		iwl_fw_dbg_collect_trig(&(_mvm)->fwrt, _trig, _fmt);	\
800 	} while (0)
801 
802 static void
iwl_mvm_ampdu_check_trigger(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u16 tid,u16 rx_ba_ssn,enum ieee80211_ampdu_mlme_action action)803 iwl_mvm_ampdu_check_trigger(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
804 			    struct ieee80211_sta *sta, u16 tid, u16 rx_ba_ssn,
805 			    enum ieee80211_ampdu_mlme_action action)
806 {
807 	struct iwl_fw_dbg_trigger_tlv *trig;
808 	struct iwl_fw_dbg_trigger_ba *ba_trig;
809 
810 	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
811 				     FW_DBG_TRIGGER_BA);
812 	if (!trig)
813 		return;
814 
815 	ba_trig = (void *)trig->data;
816 
817 	switch (action) {
818 	case IEEE80211_AMPDU_TX_OPERATIONAL: {
819 		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
820 		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
821 
822 		CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_start, tid,
823 				 "TX AGG START: MAC %pM tid %d ssn %d\n",
824 				 sta->addr, tid, tid_data->ssn);
825 		break;
826 		}
827 	case IEEE80211_AMPDU_TX_STOP_CONT:
828 		CHECK_BA_TRIGGER(mvm, trig, ba_trig->tx_ba_stop, tid,
829 				 "TX AGG STOP: MAC %pM tid %d\n",
830 				 sta->addr, tid);
831 		break;
832 	case IEEE80211_AMPDU_RX_START:
833 		CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_start, tid,
834 				 "RX AGG START: MAC %pM tid %d ssn %d\n",
835 				 sta->addr, tid, rx_ba_ssn);
836 		break;
837 	case IEEE80211_AMPDU_RX_STOP:
838 		CHECK_BA_TRIGGER(mvm, trig, ba_trig->rx_ba_stop, tid,
839 				 "RX AGG STOP: MAC %pM tid %d\n",
840 				 sta->addr, tid);
841 		break;
842 	default:
843 		break;
844 	}
845 }
846 
iwl_mvm_mac_ampdu_action(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_ampdu_params * params)847 static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
848 				    struct ieee80211_vif *vif,
849 				    struct ieee80211_ampdu_params *params)
850 {
851 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
852 	int ret;
853 	struct ieee80211_sta *sta = params->sta;
854 	enum ieee80211_ampdu_mlme_action action = params->action;
855 	u16 tid = params->tid;
856 	u16 *ssn = &params->ssn;
857 	u16 buf_size = params->buf_size;
858 	bool amsdu = params->amsdu;
859 	u16 timeout = params->timeout;
860 
861 	IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
862 		     sta->addr, tid, action);
863 
864 	if (!(mvm->nvm_data->sku_cap_11n_enable))
865 		return -EACCES;
866 
867 	mutex_lock(&mvm->mutex);
868 
869 	switch (action) {
870 	case IEEE80211_AMPDU_RX_START:
871 		if (iwl_mvm_vif_from_mac80211(vif)->ap_sta_id ==
872 				iwl_mvm_sta_from_mac80211(sta)->sta_id) {
873 			struct iwl_mvm_vif *mvmvif;
874 			u16 macid = iwl_mvm_vif_from_mac80211(vif)->id;
875 			struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[macid];
876 
877 			mdata->opened_rx_ba_sessions = true;
878 			mvmvif = iwl_mvm_vif_from_mac80211(vif);
879 			cancel_delayed_work(&mvmvif->uapsd_nonagg_detected_wk);
880 		}
881 		if (!iwl_enable_rx_ampdu()) {
882 			ret = -EINVAL;
883 			break;
884 		}
885 		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
886 					 timeout);
887 		break;
888 	case IEEE80211_AMPDU_RX_STOP:
889 		ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
890 					 timeout);
891 		break;
892 	case IEEE80211_AMPDU_TX_START:
893 		if (!iwl_enable_tx_ampdu()) {
894 			ret = -EINVAL;
895 			break;
896 		}
897 		ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
898 		break;
899 	case IEEE80211_AMPDU_TX_STOP_CONT:
900 		ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
901 		break;
902 	case IEEE80211_AMPDU_TX_STOP_FLUSH:
903 	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
904 		ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
905 		break;
906 	case IEEE80211_AMPDU_TX_OPERATIONAL:
907 		ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid,
908 					      buf_size, amsdu);
909 		break;
910 	default:
911 		WARN_ON_ONCE(1);
912 		ret = -EINVAL;
913 		break;
914 	}
915 
916 	if (!ret) {
917 		u16 rx_ba_ssn = 0;
918 
919 		if (action == IEEE80211_AMPDU_RX_START)
920 			rx_ba_ssn = *ssn;
921 
922 		iwl_mvm_ampdu_check_trigger(mvm, vif, sta, tid,
923 					    rx_ba_ssn, action);
924 	}
925 	mutex_unlock(&mvm->mutex);
926 
927 	return ret;
928 }
929 
iwl_mvm_cleanup_iterator(void * data,u8 * mac,struct ieee80211_vif * vif)930 static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
931 				     struct ieee80211_vif *vif)
932 {
933 	struct iwl_mvm *mvm = data;
934 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
935 
936 	mvmvif->uploaded = false;
937 	mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
938 
939 	spin_lock_bh(&mvm->time_event_lock);
940 	iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
941 	spin_unlock_bh(&mvm->time_event_lock);
942 
943 	mvmvif->phy_ctxt = NULL;
944 	memset(&mvmvif->bf_data, 0, sizeof(mvmvif->bf_data));
945 	memset(&mvmvif->probe_resp_data, 0, sizeof(mvmvif->probe_resp_data));
946 }
947 
iwl_mvm_restart_cleanup(struct iwl_mvm * mvm)948 static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
949 {
950 	iwl_mvm_stop_device(mvm);
951 
952 	mvm->cur_aid = 0;
953 
954 	mvm->scan_status = 0;
955 	mvm->ps_disabled = false;
956 	mvm->rfkill_safe_init_done = false;
957 
958 	/* just in case one was running */
959 	iwl_mvm_cleanup_roc_te(mvm);
960 	ieee80211_remain_on_channel_expired(mvm->hw);
961 
962 	iwl_mvm_ftm_restart(mvm);
963 
964 	/*
965 	 * cleanup all interfaces, even inactive ones, as some might have
966 	 * gone down during the HW restart
967 	 */
968 	ieee80211_iterate_interfaces(mvm->hw, 0, iwl_mvm_cleanup_iterator, mvm);
969 
970 	mvm->p2p_device_vif = NULL;
971 
972 	iwl_mvm_reset_phy_ctxts(mvm);
973 	memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
974 	memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
975 	memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
976 
977 	ieee80211_wake_queues(mvm->hw);
978 
979 	mvm->rx_ba_sessions = 0;
980 	mvm->fwrt.dump.conf = FW_DBG_INVALID;
981 	mvm->monitor_on = false;
982 
983 	/* keep statistics ticking */
984 	iwl_mvm_accu_radio_stats(mvm);
985 }
986 
__iwl_mvm_mac_start(struct iwl_mvm * mvm)987 int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
988 {
989 	int ret;
990 
991 	lockdep_assert_held(&mvm->mutex);
992 
993 	ret = iwl_mvm_mei_get_ownership(mvm);
994 	if (ret)
995 		return ret;
996 
997 	if (mvm->mei_nvm_data) {
998 		/* We got the NIC, we can now free the MEI NVM data */
999 		kfree(mvm->mei_nvm_data);
1000 		mvm->mei_nvm_data = NULL;
1001 
1002 		/*
1003 		 * We can't free the nvm_data we allocated based on the SAP
1004 		 * data because we registered to cfg80211 with the channels
1005 		 * allocated on mvm->nvm_data. Keep a pointer in temp_nvm_data
1006 		 * just in order to be able free it later.
1007 		 * NULLify nvm_data so that we will read the NVM from the
1008 		 * firmware this time.
1009 		 */
1010 		mvm->temp_nvm_data = mvm->nvm_data;
1011 		mvm->nvm_data = NULL;
1012 	}
1013 
1014 	if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
1015 		/*
1016 		 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
1017 		 * so later code will - from now on - see that we're doing it.
1018 		 */
1019 		set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1020 		clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
1021 		/* Clean up some internal and mac80211 state on restart */
1022 		iwl_mvm_restart_cleanup(mvm);
1023 	}
1024 	ret = iwl_mvm_up(mvm);
1025 
1026 	iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_POST_INIT,
1027 			       NULL);
1028 	iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_PERIODIC,
1029 			       NULL);
1030 
1031 	mvm->last_reset_or_resume_time_jiffies = jiffies;
1032 
1033 	if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
1034 		/* Something went wrong - we need to finish some cleanup
1035 		 * that normally iwl_mvm_mac_restart_complete() below
1036 		 * would do.
1037 		 */
1038 		clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1039 	}
1040 
1041 	return ret;
1042 }
1043 
iwl_mvm_mac_start(struct ieee80211_hw * hw)1044 static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
1045 {
1046 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1047 	int ret;
1048 	int retry, max_retry = 0;
1049 
1050 	mutex_lock(&mvm->mutex);
1051 
1052 	/* we are starting the mac not in error flow, and restart is enabled */
1053 	if (!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) &&
1054 	    iwlwifi_mod_params.fw_restart) {
1055 		max_retry = IWL_MAX_INIT_RETRY;
1056 		/*
1057 		 * This will prevent mac80211 recovery flows to trigger during
1058 		 * init failures
1059 		 */
1060 		set_bit(IWL_MVM_STATUS_STARTING, &mvm->status);
1061 	}
1062 
1063 	for (retry = 0; retry <= max_retry; retry++) {
1064 		ret = __iwl_mvm_mac_start(mvm);
1065 		if (!ret)
1066 			break;
1067 
1068 		IWL_ERR(mvm, "mac start retry %d\n", retry);
1069 	}
1070 	clear_bit(IWL_MVM_STATUS_STARTING, &mvm->status);
1071 
1072 	mutex_unlock(&mvm->mutex);
1073 
1074 	iwl_mvm_mei_set_sw_rfkill_state(mvm);
1075 
1076 	return ret;
1077 }
1078 
iwl_mvm_restart_complete(struct iwl_mvm * mvm)1079 static void iwl_mvm_restart_complete(struct iwl_mvm *mvm)
1080 {
1081 	int ret;
1082 
1083 	mutex_lock(&mvm->mutex);
1084 
1085 	clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1086 
1087 	ret = iwl_mvm_update_quotas(mvm, true, NULL);
1088 	if (ret)
1089 		IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
1090 			ret);
1091 
1092 	iwl_mvm_send_recovery_cmd(mvm, ERROR_RECOVERY_END_OF_RECOVERY);
1093 
1094 	/*
1095 	 * If we have TDLS peers, remove them. We don't know the last seqno/PN
1096 	 * of packets the FW sent out, so we must reconnect.
1097 	 */
1098 	iwl_mvm_teardown_tdls_peers(mvm);
1099 
1100 	mutex_unlock(&mvm->mutex);
1101 }
1102 
1103 static void
iwl_mvm_mac_reconfig_complete(struct ieee80211_hw * hw,enum ieee80211_reconfig_type reconfig_type)1104 iwl_mvm_mac_reconfig_complete(struct ieee80211_hw *hw,
1105 			      enum ieee80211_reconfig_type reconfig_type)
1106 {
1107 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1108 
1109 	switch (reconfig_type) {
1110 	case IEEE80211_RECONFIG_TYPE_RESTART:
1111 		iwl_mvm_restart_complete(mvm);
1112 		break;
1113 	case IEEE80211_RECONFIG_TYPE_SUSPEND:
1114 		break;
1115 	}
1116 }
1117 
__iwl_mvm_mac_stop(struct iwl_mvm * mvm)1118 void __iwl_mvm_mac_stop(struct iwl_mvm *mvm)
1119 {
1120 	lockdep_assert_held(&mvm->mutex);
1121 
1122 	iwl_mvm_ftm_initiator_smooth_stop(mvm);
1123 
1124 	/* firmware counters are obviously reset now, but we shouldn't
1125 	 * partially track so also clear the fw_reset_accu counters.
1126 	 */
1127 	memset(&mvm->accu_radio_stats, 0, sizeof(mvm->accu_radio_stats));
1128 
1129 	/* async_handlers_wk is now blocked */
1130 
1131 	if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12)
1132 		iwl_mvm_rm_aux_sta(mvm);
1133 
1134 	iwl_mvm_stop_device(mvm);
1135 
1136 	iwl_mvm_async_handlers_purge(mvm);
1137 	/* async_handlers_list is empty and will stay empty: HW is stopped */
1138 
1139 	/*
1140 	 * Clear IN_HW_RESTART and HW_RESTART_REQUESTED flag when stopping the
1141 	 * hw (as restart_complete() won't be called in this case) and mac80211
1142 	 * won't execute the restart.
1143 	 * But make sure to cleanup interfaces that have gone down before/during
1144 	 * HW restart was requested.
1145 	 */
1146 	if (test_and_clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||
1147 	    test_and_clear_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
1148 			       &mvm->status))
1149 		ieee80211_iterate_interfaces(mvm->hw, 0,
1150 					     iwl_mvm_cleanup_iterator, mvm);
1151 
1152 	/* We shouldn't have any UIDs still set.  Loop over all the UIDs to
1153 	 * make sure there's nothing left there and warn if any is found.
1154 	 */
1155 	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1156 		int i;
1157 
1158 		for (i = 0; i < mvm->max_scans; i++) {
1159 			if (WARN_ONCE(mvm->scan_uid_status[i],
1160 				      "UMAC scan UID %d status was not cleaned\n",
1161 				      i))
1162 				mvm->scan_uid_status[i] = 0;
1163 		}
1164 	}
1165 }
1166 
iwl_mvm_mac_stop(struct ieee80211_hw * hw)1167 static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
1168 {
1169 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1170 
1171 	flush_work(&mvm->async_handlers_wk);
1172 	flush_work(&mvm->add_stream_wk);
1173 
1174 	/*
1175 	 * Lock and clear the firmware running bit here already, so that
1176 	 * new commands coming in elsewhere, e.g. from debugfs, will not
1177 	 * be able to proceed. This is important here because one of those
1178 	 * debugfs files causes the firmware dump to be triggered, and if we
1179 	 * don't stop debugfs accesses before canceling that it could be
1180 	 * retriggered after we flush it but before we've cleared the bit.
1181 	 */
1182 	clear_bit(IWL_MVM_STATUS_FIRMWARE_RUNNING, &mvm->status);
1183 
1184 	cancel_delayed_work_sync(&mvm->cs_tx_unblock_dwork);
1185 	cancel_delayed_work_sync(&mvm->scan_timeout_dwork);
1186 
1187 	/*
1188 	 * The work item could be running or queued if the
1189 	 * ROC time event stops just as we get here.
1190 	 */
1191 	flush_work(&mvm->roc_done_wk);
1192 
1193 	iwl_mvm_mei_set_sw_rfkill_state(mvm);
1194 
1195 	mutex_lock(&mvm->mutex);
1196 	__iwl_mvm_mac_stop(mvm);
1197 	mutex_unlock(&mvm->mutex);
1198 
1199 	/*
1200 	 * The worker might have been waiting for the mutex, let it run and
1201 	 * discover that its list is now empty.
1202 	 */
1203 	cancel_work_sync(&mvm->async_handlers_wk);
1204 }
1205 
iwl_mvm_get_free_phy_ctxt(struct iwl_mvm * mvm)1206 static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
1207 {
1208 	u16 i;
1209 
1210 	lockdep_assert_held(&mvm->mutex);
1211 
1212 	for (i = 0; i < NUM_PHY_CTX; i++)
1213 		if (!mvm->phy_ctxts[i].ref)
1214 			return &mvm->phy_ctxts[i];
1215 
1216 	IWL_ERR(mvm, "No available PHY context\n");
1217 	return NULL;
1218 }
1219 
iwl_mvm_set_tx_power(struct iwl_mvm * mvm,struct ieee80211_vif * vif,s16 tx_power)1220 static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1221 				s16 tx_power)
1222 {
1223 	u32 cmd_id = REDUCE_TX_POWER_CMD;
1224 	int len;
1225 	struct iwl_dev_tx_power_cmd cmd = {
1226 		.common.set_mode = cpu_to_le32(IWL_TX_POWER_MODE_SET_MAC),
1227 		.common.mac_context_id =
1228 			cpu_to_le32(iwl_mvm_vif_from_mac80211(vif)->id),
1229 		.common.pwr_restriction = cpu_to_le16(8 * tx_power),
1230 	};
1231 	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id,
1232 					   IWL_FW_CMD_VER_UNKNOWN);
1233 
1234 	if (tx_power == IWL_DEFAULT_MAX_TX_POWER)
1235 		cmd.common.pwr_restriction = cpu_to_le16(IWL_DEV_MAX_TX_POWER);
1236 
1237 	if (cmd_ver == 7)
1238 		len = sizeof(cmd.v7);
1239 	else if (cmd_ver == 6)
1240 		len = sizeof(cmd.v6);
1241 	else if (fw_has_api(&mvm->fw->ucode_capa,
1242 			    IWL_UCODE_TLV_API_REDUCE_TX_POWER))
1243 		len = sizeof(cmd.v5);
1244 	else if (fw_has_capa(&mvm->fw->ucode_capa,
1245 			     IWL_UCODE_TLV_CAPA_TX_POWER_ACK))
1246 		len = sizeof(cmd.v4);
1247 	else
1248 		len = sizeof(cmd.v3);
1249 
1250 	/* all structs have the same common part, add it */
1251 	len += sizeof(cmd.common);
1252 
1253 	return iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, len, &cmd);
1254 }
1255 
iwl_mvm_post_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1256 static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw,
1257 				       struct ieee80211_vif *vif)
1258 {
1259 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1260 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1261 	int ret;
1262 
1263 	mutex_lock(&mvm->mutex);
1264 
1265 	if (vif->type == NL80211_IFTYPE_STATION) {
1266 		struct iwl_mvm_sta *mvmsta;
1267 
1268 		mvmvif->csa_bcn_pending = false;
1269 		mvmsta = iwl_mvm_sta_from_staid_protected(mvm,
1270 							  mvmvif->ap_sta_id);
1271 
1272 		if (WARN_ON(!mvmsta)) {
1273 			ret = -EIO;
1274 			goto out_unlock;
1275 		}
1276 
1277 		iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false);
1278 
1279 		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1280 
1281 		if (!fw_has_capa(&mvm->fw->ucode_capa,
1282 				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
1283 			ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1284 			if (ret)
1285 				goto out_unlock;
1286 
1287 			iwl_mvm_stop_session_protection(mvm, vif);
1288 		}
1289 	}
1290 
1291 	mvmvif->ps_disabled = false;
1292 
1293 	ret = iwl_mvm_power_update_ps(mvm);
1294 
1295 out_unlock:
1296 	if (mvmvif->csa_failed)
1297 		ret = -EIO;
1298 	mutex_unlock(&mvm->mutex);
1299 
1300 	return ret;
1301 }
1302 
iwl_mvm_abort_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1303 static void iwl_mvm_abort_channel_switch(struct ieee80211_hw *hw,
1304 					 struct ieee80211_vif *vif)
1305 {
1306 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1307 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1308 	struct iwl_chan_switch_te_cmd cmd = {
1309 		.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
1310 							  mvmvif->color)),
1311 		.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE),
1312 	};
1313 
1314 	/*
1315 	 * In the new flow since FW is in charge of the timing,
1316 	 * if driver has canceled the channel switch he will receive the
1317 	 * CHANNEL_SWITCH_START_NOTIF notification from FW and then cancel it
1318 	 */
1319 	if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
1320 				    CHANNEL_SWITCH_ERROR_NOTIF, 0))
1321 		return;
1322 
1323 	IWL_DEBUG_MAC80211(mvm, "Abort CSA on mac %d\n", mvmvif->id);
1324 
1325 	mutex_lock(&mvm->mutex);
1326 	if (!fw_has_capa(&mvm->fw->ucode_capa,
1327 			 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
1328 		iwl_mvm_remove_csa_period(mvm, vif);
1329 	else
1330 		WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
1331 					     WIDE_ID(MAC_CONF_GROUP,
1332 						     CHANNEL_SWITCH_TIME_EVENT_CMD),
1333 					     0, sizeof(cmd), &cmd));
1334 	mvmvif->csa_failed = true;
1335 	mutex_unlock(&mvm->mutex);
1336 
1337 	iwl_mvm_post_channel_switch(hw, vif);
1338 }
1339 
iwl_mvm_channel_switch_disconnect_wk(struct work_struct * wk)1340 static void iwl_mvm_channel_switch_disconnect_wk(struct work_struct *wk)
1341 {
1342 	struct iwl_mvm_vif *mvmvif;
1343 	struct ieee80211_vif *vif;
1344 
1345 	mvmvif = container_of(wk, struct iwl_mvm_vif, csa_work.work);
1346 	vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1347 
1348 	/* Trigger disconnect (should clear the CSA state) */
1349 	ieee80211_chswitch_done(vif, false);
1350 }
1351 
iwl_mvm_mac_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1352 static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
1353 				     struct ieee80211_vif *vif)
1354 {
1355 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1356 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1357 	int ret;
1358 
1359 	mvmvif->mvm = mvm;
1360 	RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1361 
1362 	/*
1363 	 * Not much to do here. The stack will not allow interface
1364 	 * types or combinations that we didn't advertise, so we
1365 	 * don't really have to check the types.
1366 	 */
1367 
1368 	mutex_lock(&mvm->mutex);
1369 
1370 	/* make sure that beacon statistics don't go backwards with FW reset */
1371 	if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
1372 		mvmvif->beacon_stats.accu_num_beacons +=
1373 			mvmvif->beacon_stats.num_beacons;
1374 
1375 	/* Allocate resources for the MAC context, and add it to the fw  */
1376 	ret = iwl_mvm_mac_ctxt_init(mvm, vif);
1377 	if (ret)
1378 		goto out_unlock;
1379 
1380 	rcu_assign_pointer(mvm->vif_id_to_mac[mvmvif->id], vif);
1381 
1382 	/*
1383 	 * The AP binding flow can be done only after the beacon
1384 	 * template is configured (which happens only in the mac80211
1385 	 * start_ap() flow), and adding the broadcast station can happen
1386 	 * only after the binding.
1387 	 * In addition, since modifying the MAC before adding a bcast
1388 	 * station is not allowed by the FW, delay the adding of MAC context to
1389 	 * the point where we can also add the bcast station.
1390 	 * In short: there's not much we can do at this point, other than
1391 	 * allocating resources :)
1392 	 */
1393 	if (vif->type == NL80211_IFTYPE_AP ||
1394 	    vif->type == NL80211_IFTYPE_ADHOC) {
1395 		ret = iwl_mvm_alloc_bcast_sta(mvm, vif);
1396 		if (ret) {
1397 			IWL_ERR(mvm, "Failed to allocate bcast sta\n");
1398 			goto out_unlock;
1399 		}
1400 
1401 		/*
1402 		 * Only queue for this station is the mcast queue,
1403 		 * which shouldn't be in TFD mask anyway
1404 		 */
1405 		ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->mcast_sta,
1406 					       0, vif->type,
1407 					       IWL_STA_MULTICAST);
1408 		if (ret)
1409 			goto out_unlock;
1410 
1411 		iwl_mvm_vif_dbgfs_register(mvm, vif);
1412 		goto out_unlock;
1413 	}
1414 
1415 	mvmvif->features |= hw->netdev_features;
1416 
1417 	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1418 	if (ret)
1419 		goto out_unlock;
1420 
1421 	ret = iwl_mvm_power_update_mac(mvm);
1422 	if (ret)
1423 		goto out_remove_mac;
1424 
1425 	/* beacon filtering */
1426 	ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
1427 	if (ret)
1428 		goto out_remove_mac;
1429 
1430 	if (!mvm->bf_allowed_vif &&
1431 	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
1432 		mvm->bf_allowed_vif = mvmvif;
1433 		vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
1434 				     IEEE80211_VIF_SUPPORTS_CQM_RSSI;
1435 	}
1436 
1437 	/*
1438 	 * P2P_DEVICE interface does not have a channel context assigned to it,
1439 	 * so a dedicated PHY context is allocated to it and the corresponding
1440 	 * MAC context is bound to it at this stage.
1441 	 */
1442 	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1443 
1444 		mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1445 		if (!mvmvif->phy_ctxt) {
1446 			ret = -ENOSPC;
1447 			goto out_free_bf;
1448 		}
1449 
1450 		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
1451 		ret = iwl_mvm_binding_add_vif(mvm, vif);
1452 		if (ret)
1453 			goto out_unref_phy;
1454 
1455 		ret = iwl_mvm_add_p2p_bcast_sta(mvm, vif);
1456 		if (ret)
1457 			goto out_unbind;
1458 
1459 		/* Save a pointer to p2p device vif, so it can later be used to
1460 		 * update the p2p device MAC when a GO is started/stopped */
1461 		mvm->p2p_device_vif = vif;
1462 	}
1463 
1464 	iwl_mvm_tcm_add_vif(mvm, vif);
1465 	INIT_DELAYED_WORK(&mvmvif->csa_work,
1466 			  iwl_mvm_channel_switch_disconnect_wk);
1467 
1468 	if (vif->type == NL80211_IFTYPE_MONITOR)
1469 		mvm->monitor_on = true;
1470 
1471 	iwl_mvm_vif_dbgfs_register(mvm, vif);
1472 
1473 	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1474 	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
1475 	    !mvm->csme_vif && mvm->mei_registered) {
1476 		iwl_mei_set_nic_info(vif->addr, mvm->nvm_data->hw_addr);
1477 		iwl_mei_set_netdev(ieee80211_vif_to_wdev(vif)->netdev);
1478 		mvm->csme_vif = vif;
1479 	}
1480 
1481 	goto out_unlock;
1482 
1483  out_unbind:
1484 	iwl_mvm_binding_remove_vif(mvm, vif);
1485  out_unref_phy:
1486 	iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1487  out_free_bf:
1488 	if (mvm->bf_allowed_vif == mvmvif) {
1489 		mvm->bf_allowed_vif = NULL;
1490 		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1491 				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1492 	}
1493  out_remove_mac:
1494 	mvmvif->phy_ctxt = NULL;
1495 	iwl_mvm_mac_ctxt_remove(mvm, vif);
1496  out_unlock:
1497 	mutex_unlock(&mvm->mutex);
1498 
1499 	return ret;
1500 }
1501 
iwl_mvm_prepare_mac_removal(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1502 static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1503 					struct ieee80211_vif *vif)
1504 {
1505 	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1506 		/*
1507 		 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1508 		 * We assume here that all the packets sent to the OFFCHANNEL
1509 		 * queue are sent in ROC session.
1510 		 */
1511 		flush_work(&mvm->roc_done_wk);
1512 	}
1513 }
1514 
iwl_mvm_mac_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)1515 static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1516 					 struct ieee80211_vif *vif)
1517 {
1518 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1519 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1520 	struct iwl_probe_resp_data *probe_data;
1521 
1522 	iwl_mvm_prepare_mac_removal(mvm, vif);
1523 
1524 	if (!(vif->type == NL80211_IFTYPE_AP ||
1525 	      vif->type == NL80211_IFTYPE_ADHOC))
1526 		iwl_mvm_tcm_rm_vif(mvm, vif);
1527 
1528 	mutex_lock(&mvm->mutex);
1529 
1530 	if (vif == mvm->csme_vif) {
1531 		iwl_mei_set_netdev(NULL);
1532 		mvm->csme_vif = NULL;
1533 	}
1534 
1535 	probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
1536 					       lockdep_is_held(&mvm->mutex));
1537 	RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);
1538 	if (probe_data)
1539 		kfree_rcu(probe_data, rcu_head);
1540 
1541 	if (mvm->bf_allowed_vif == mvmvif) {
1542 		mvm->bf_allowed_vif = NULL;
1543 		vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1544 				       IEEE80211_VIF_SUPPORTS_CQM_RSSI);
1545 	}
1546 
1547 	if (vif->bss_conf.ftm_responder)
1548 		memset(&mvm->ftm_resp_stats, 0, sizeof(mvm->ftm_resp_stats));
1549 
1550 	iwl_mvm_vif_dbgfs_clean(mvm, vif);
1551 
1552 	/*
1553 	 * For AP/GO interface, the tear down of the resources allocated to the
1554 	 * interface is be handled as part of the stop_ap flow.
1555 	 */
1556 	if (vif->type == NL80211_IFTYPE_AP ||
1557 	    vif->type == NL80211_IFTYPE_ADHOC) {
1558 #ifdef CONFIG_NL80211_TESTMODE
1559 		if (vif == mvm->noa_vif) {
1560 			mvm->noa_vif = NULL;
1561 			mvm->noa_duration = 0;
1562 		}
1563 #endif
1564 		iwl_mvm_dealloc_int_sta(mvm, &mvmvif->mcast_sta);
1565 		iwl_mvm_dealloc_bcast_sta(mvm, vif);
1566 		goto out_release;
1567 	}
1568 
1569 	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1570 		mvm->p2p_device_vif = NULL;
1571 		iwl_mvm_rm_p2p_bcast_sta(mvm, vif);
1572 		iwl_mvm_binding_remove_vif(mvm, vif);
1573 		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
1574 		mvmvif->phy_ctxt = NULL;
1575 	}
1576 
1577 	iwl_mvm_power_update_mac(mvm);
1578 	iwl_mvm_mac_ctxt_remove(mvm, vif);
1579 
1580 	RCU_INIT_POINTER(mvm->vif_id_to_mac[mvmvif->id], NULL);
1581 
1582 	if (vif->type == NL80211_IFTYPE_MONITOR)
1583 		mvm->monitor_on = false;
1584 
1585 out_release:
1586 	mutex_unlock(&mvm->mutex);
1587 }
1588 
iwl_mvm_mac_config(struct ieee80211_hw * hw,u32 changed)1589 static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
1590 {
1591 	return 0;
1592 }
1593 
1594 struct iwl_mvm_mc_iter_data {
1595 	struct iwl_mvm *mvm;
1596 	int port_id;
1597 };
1598 
iwl_mvm_mc_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1599 static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1600 				      struct ieee80211_vif *vif)
1601 {
1602 	struct iwl_mvm_mc_iter_data *data = _data;
1603 	struct iwl_mvm *mvm = data->mvm;
1604 	struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1605 	struct iwl_host_cmd hcmd = {
1606 		.id = MCAST_FILTER_CMD,
1607 		.flags = CMD_ASYNC,
1608 		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1609 	};
1610 	int ret, len;
1611 
1612 	/* if we don't have free ports, mcast frames will be dropped */
1613 	if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1614 		return;
1615 
1616 	if (vif->type != NL80211_IFTYPE_STATION ||
1617 	    !vif->cfg.assoc)
1618 		return;
1619 
1620 	cmd->port_id = data->port_id++;
1621 	memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1622 	len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1623 
1624 	hcmd.len[0] = len;
1625 	hcmd.data[0] = cmd;
1626 
1627 	ret = iwl_mvm_send_cmd(mvm, &hcmd);
1628 	if (ret)
1629 		IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1630 }
1631 
iwl_mvm_recalc_multicast(struct iwl_mvm * mvm)1632 static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1633 {
1634 	struct iwl_mvm_mc_iter_data iter_data = {
1635 		.mvm = mvm,
1636 	};
1637 	int ret;
1638 
1639 	lockdep_assert_held(&mvm->mutex);
1640 
1641 	if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1642 		return;
1643 
1644 	ieee80211_iterate_active_interfaces_atomic(
1645 		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1646 		iwl_mvm_mc_iface_iterator, &iter_data);
1647 
1648 	/*
1649 	 * Send a (synchronous) ech command so that we wait for the
1650 	 * multiple asynchronous MCAST_FILTER_CMD commands sent by
1651 	 * the interface iterator. Otherwise, we might get here over
1652 	 * and over again (by userspace just sending a lot of these)
1653 	 * and the CPU can send them faster than the firmware can
1654 	 * process them.
1655 	 * Note that the CPU is still faster - but with this we'll
1656 	 * actually send fewer commands overall because the CPU will
1657 	 * not schedule the work in mac80211 as frequently if it's
1658 	 * still running when rescheduled (possibly multiple times).
1659 	 */
1660 	ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL);
1661 	if (ret)
1662 		IWL_ERR(mvm, "Failed to synchronize multicast groups update\n");
1663 }
1664 
iwl_mvm_prepare_multicast(struct ieee80211_hw * hw,struct netdev_hw_addr_list * mc_list)1665 static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1666 				     struct netdev_hw_addr_list *mc_list)
1667 {
1668 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1669 	struct iwl_mcast_filter_cmd *cmd;
1670 	struct netdev_hw_addr *addr;
1671 	int addr_count;
1672 	bool pass_all;
1673 	int len;
1674 
1675 	addr_count = netdev_hw_addr_list_count(mc_list);
1676 	pass_all = addr_count > MAX_MCAST_FILTERING_ADDRESSES ||
1677 		   IWL_MVM_FW_MCAST_FILTER_PASS_ALL;
1678 	if (pass_all)
1679 		addr_count = 0;
1680 
1681 	len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1682 	cmd = kzalloc(len, GFP_ATOMIC);
1683 	if (!cmd)
1684 		return 0;
1685 
1686 	if (pass_all) {
1687 		cmd->pass_all = 1;
1688 		return (u64)(unsigned long)cmd;
1689 	}
1690 
1691 	netdev_hw_addr_list_for_each(addr, mc_list) {
1692 		IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1693 				   cmd->count, addr->addr);
1694 		memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1695 		       addr->addr, ETH_ALEN);
1696 		cmd->count++;
1697 	}
1698 
1699 	return (u64)(unsigned long)cmd;
1700 }
1701 
iwl_mvm_configure_filter(struct ieee80211_hw * hw,unsigned int changed_flags,unsigned int * total_flags,u64 multicast)1702 static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1703 				     unsigned int changed_flags,
1704 				     unsigned int *total_flags,
1705 				     u64 multicast)
1706 {
1707 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1708 	struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
1709 
1710 	mutex_lock(&mvm->mutex);
1711 
1712 	/* replace previous configuration */
1713 	kfree(mvm->mcast_filter_cmd);
1714 	mvm->mcast_filter_cmd = cmd;
1715 
1716 	if (!cmd)
1717 		goto out;
1718 
1719 	if (changed_flags & FIF_ALLMULTI)
1720 		cmd->pass_all = !!(*total_flags & FIF_ALLMULTI);
1721 
1722 	if (cmd->pass_all)
1723 		cmd->count = 0;
1724 
1725 	iwl_mvm_recalc_multicast(mvm);
1726 out:
1727 	mutex_unlock(&mvm->mutex);
1728 	*total_flags = 0;
1729 }
1730 
iwl_mvm_config_iface_filter(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int filter_flags,unsigned int changed_flags)1731 static void iwl_mvm_config_iface_filter(struct ieee80211_hw *hw,
1732 					struct ieee80211_vif *vif,
1733 					unsigned int filter_flags,
1734 					unsigned int changed_flags)
1735 {
1736 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1737 
1738 	/* We support only filter for probe requests */
1739 	if (!(changed_flags & FIF_PROBE_REQ))
1740 		return;
1741 
1742 	/* Supported only for p2p client interfaces */
1743 	if (vif->type != NL80211_IFTYPE_STATION || !vif->cfg.assoc ||
1744 	    !vif->p2p)
1745 		return;
1746 
1747 	mutex_lock(&mvm->mutex);
1748 	iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
1749 	mutex_unlock(&mvm->mutex);
1750 }
1751 
iwl_mvm_update_mu_groups(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1752 static int iwl_mvm_update_mu_groups(struct iwl_mvm *mvm,
1753 				    struct ieee80211_vif *vif)
1754 {
1755 	struct iwl_mu_group_mgmt_cmd cmd = {};
1756 
1757 	memcpy(cmd.membership_status, vif->bss_conf.mu_group.membership,
1758 	       WLAN_MEMBERSHIP_LEN);
1759 	memcpy(cmd.user_position, vif->bss_conf.mu_group.position,
1760 	       WLAN_USER_POSITION_LEN);
1761 
1762 	return iwl_mvm_send_cmd_pdu(mvm,
1763 				    WIDE_ID(DATA_PATH_GROUP,
1764 					    UPDATE_MU_GROUPS_CMD),
1765 				    0, sizeof(cmd), &cmd);
1766 }
1767 
iwl_mvm_mu_mimo_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1768 static void iwl_mvm_mu_mimo_iface_iterator(void *_data, u8 *mac,
1769 					   struct ieee80211_vif *vif)
1770 {
1771 	if (vif->bss_conf.mu_mimo_owner) {
1772 		struct iwl_mu_group_mgmt_notif *notif = _data;
1773 
1774 		/*
1775 		 * MU-MIMO Group Id action frame is little endian. We treat
1776 		 * the data received from firmware as if it came from the
1777 		 * action frame, so no conversion is needed.
1778 		 */
1779 		ieee80211_update_mu_groups(vif, 0,
1780 					   (u8 *)&notif->membership_status,
1781 					   (u8 *)&notif->user_position);
1782 	}
1783 }
1784 
iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)1785 void iwl_mvm_mu_mimo_grp_notif(struct iwl_mvm *mvm,
1786 			       struct iwl_rx_cmd_buffer *rxb)
1787 {
1788 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1789 	struct iwl_mu_group_mgmt_notif *notif = (void *)pkt->data;
1790 
1791 	ieee80211_iterate_active_interfaces_atomic(
1792 			mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1793 			iwl_mvm_mu_mimo_iface_iterator, notif);
1794 }
1795 
iwl_mvm_he_get_ppe_val(u8 * ppe,u8 ppe_pos_bit)1796 static u8 iwl_mvm_he_get_ppe_val(u8 *ppe, u8 ppe_pos_bit)
1797 {
1798 	u8 byte_num = ppe_pos_bit / 8;
1799 	u8 bit_num = ppe_pos_bit % 8;
1800 	u8 residue_bits;
1801 	u8 res;
1802 
1803 	if (bit_num <= 5)
1804 		return (ppe[byte_num] >> bit_num) &
1805 		       (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE) - 1);
1806 
1807 	/*
1808 	 * If bit_num > 5, we have to combine bits with next byte.
1809 	 * Calculate how many bits we need to take from current byte (called
1810 	 * here "residue_bits"), and add them to bits from next byte.
1811 	 */
1812 
1813 	residue_bits = 8 - bit_num;
1814 
1815 	res = (ppe[byte_num + 1] &
1816 	       (BIT(IEEE80211_PPE_THRES_INFO_PPET_SIZE - residue_bits) - 1)) <<
1817 	      residue_bits;
1818 	res += (ppe[byte_num] >> bit_num) & (BIT(residue_bits) - 1);
1819 
1820 	return res;
1821 }
1822 
iwl_mvm_parse_ppe(struct iwl_mvm * mvm,struct iwl_he_pkt_ext_v2 * pkt_ext,u8 nss,u8 ru_index_bitmap,u8 * ppe,u8 ppe_pos_bit)1823 static void iwl_mvm_parse_ppe(struct iwl_mvm *mvm,
1824 			      struct iwl_he_pkt_ext_v2 *pkt_ext, u8 nss,
1825 			      u8 ru_index_bitmap, u8 *ppe, u8 ppe_pos_bit)
1826 {
1827 	int i;
1828 
1829 	/*
1830 	* FW currently supports only nss == MAX_HE_SUPP_NSS
1831 	*
1832 	* If nss > MAX: we can ignore values we don't support
1833 	* If nss < MAX: we can set zeros in other streams
1834 	*/
1835 	if (nss > MAX_HE_SUPP_NSS) {
1836 		IWL_DEBUG_INFO(mvm, "Got NSS = %d - trimming to %d\n", nss,
1837 			       MAX_HE_SUPP_NSS);
1838 		nss = MAX_HE_SUPP_NSS;
1839 	}
1840 
1841 	for (i = 0; i < nss; i++) {
1842 		u8 ru_index_tmp = ru_index_bitmap << 1;
1843 		u8 low_th = IWL_HE_PKT_EXT_NONE, high_th = IWL_HE_PKT_EXT_NONE;
1844 		u8 bw;
1845 
1846 		for (bw = 0;
1847 		     bw < ARRAY_SIZE(pkt_ext->pkt_ext_qam_th[i]);
1848 		     bw++) {
1849 			ru_index_tmp >>= 1;
1850 
1851 			if (!(ru_index_tmp & 1))
1852 				continue;
1853 
1854 			high_th = iwl_mvm_he_get_ppe_val(ppe, ppe_pos_bit);
1855 			ppe_pos_bit += IEEE80211_PPE_THRES_INFO_PPET_SIZE;
1856 			low_th = iwl_mvm_he_get_ppe_val(ppe, ppe_pos_bit);
1857 			ppe_pos_bit += IEEE80211_PPE_THRES_INFO_PPET_SIZE;
1858 
1859 			pkt_ext->pkt_ext_qam_th[i][bw][0] = low_th;
1860 			pkt_ext->pkt_ext_qam_th[i][bw][1] = high_th;
1861 		}
1862 	}
1863 }
1864 
iwl_mvm_set_pkt_ext_from_he_ppe(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct iwl_he_pkt_ext_v2 * pkt_ext)1865 static void iwl_mvm_set_pkt_ext_from_he_ppe(struct iwl_mvm *mvm,
1866 					    struct ieee80211_sta *sta,
1867 					    struct iwl_he_pkt_ext_v2 *pkt_ext)
1868 {
1869 	u8 nss = (sta->deflink.he_cap.ppe_thres[0] & IEEE80211_PPE_THRES_NSS_MASK) + 1;
1870 	u8 *ppe = &sta->deflink.he_cap.ppe_thres[0];
1871 	u8 ru_index_bitmap =
1872 		u8_get_bits(*ppe,
1873 			    IEEE80211_PPE_THRES_RU_INDEX_BITMASK_MASK);
1874 	/* Starting after PPE header */
1875 	u8 ppe_pos_bit = IEEE80211_HE_PPE_THRES_INFO_HEADER_SIZE;
1876 
1877 	iwl_mvm_parse_ppe(mvm, pkt_ext, nss, ru_index_bitmap, ppe, ppe_pos_bit);
1878 }
1879 
iwl_mvm_set_pkt_ext_from_nominal_padding(struct iwl_he_pkt_ext_v2 * pkt_ext,u8 nominal_padding,u32 * flags)1880 static void iwl_mvm_set_pkt_ext_from_nominal_padding(struct iwl_he_pkt_ext_v2 *pkt_ext,
1881 						     u8 nominal_padding,
1882 						     u32 *flags)
1883 {
1884 	int low_th = -1;
1885 	int high_th = -1;
1886 	int i;
1887 
1888 	switch (nominal_padding) {
1889 	case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_0US:
1890 		low_th = IWL_HE_PKT_EXT_NONE;
1891 		high_th = IWL_HE_PKT_EXT_NONE;
1892 		break;
1893 	case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_8US:
1894 		low_th = IWL_HE_PKT_EXT_BPSK;
1895 		high_th = IWL_HE_PKT_EXT_NONE;
1896 		break;
1897 	case IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US:
1898 		low_th = IWL_HE_PKT_EXT_NONE;
1899 		high_th = IWL_HE_PKT_EXT_BPSK;
1900 		break;
1901 	}
1902 
1903 	/* Set the PPE thresholds accordingly */
1904 	if (low_th >= 0 && high_th >= 0) {
1905 		for (i = 0; i < MAX_HE_SUPP_NSS; i++) {
1906 			u8 bw;
1907 
1908 			for (bw = 0;
1909 			     bw < ARRAY_SIZE(pkt_ext->pkt_ext_qam_th[i]);
1910 			     bw++) {
1911 				pkt_ext->pkt_ext_qam_th[i][bw][0] = low_th;
1912 				pkt_ext->pkt_ext_qam_th[i][bw][1] = high_th;
1913 			}
1914 		}
1915 
1916 		*flags |= STA_CTXT_HE_PACKET_EXT;
1917 	}
1918 }
1919 
iwl_mvm_cfg_he_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 sta_id)1920 static void iwl_mvm_cfg_he_sta(struct iwl_mvm *mvm,
1921 			       struct ieee80211_vif *vif, u8 sta_id)
1922 {
1923 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1924 	struct iwl_he_sta_context_cmd_v3 sta_ctxt_cmd = {
1925 		.sta_id = sta_id,
1926 		.tid_limit = IWL_MAX_TID_COUNT,
1927 		.bss_color = vif->bss_conf.he_bss_color.color,
1928 		.htc_trig_based_pkt_ext = vif->bss_conf.htc_trig_based_pkt_ext,
1929 		.frame_time_rts_th =
1930 			cpu_to_le16(vif->bss_conf.frame_time_rts_th),
1931 	};
1932 	struct iwl_he_sta_context_cmd_v2 sta_ctxt_cmd_v2 = {};
1933 	u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, STA_HE_CTXT_CMD);
1934 	u8 ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 2);
1935 	int size;
1936 	struct ieee80211_sta *sta;
1937 	u32 flags;
1938 	int i;
1939 	const struct ieee80211_sta_he_cap *own_he_cap = NULL;
1940 	struct ieee80211_chanctx_conf *chanctx_conf;
1941 	const struct ieee80211_supported_band *sband;
1942 	void *cmd;
1943 
1944 	if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_MBSSID_HE))
1945 		ver = 1;
1946 
1947 	switch (ver) {
1948 	case 1:
1949 		/* same layout as v2 except some data at the end */
1950 		cmd = &sta_ctxt_cmd_v2;
1951 		size = sizeof(struct iwl_he_sta_context_cmd_v1);
1952 		break;
1953 	case 2:
1954 		cmd = &sta_ctxt_cmd_v2;
1955 		size = sizeof(struct iwl_he_sta_context_cmd_v2);
1956 		break;
1957 	case 3:
1958 		cmd = &sta_ctxt_cmd;
1959 		size = sizeof(struct iwl_he_sta_context_cmd_v3);
1960 		break;
1961 	default:
1962 		IWL_ERR(mvm, "bad STA_HE_CTXT_CMD version %d\n", ver);
1963 		return;
1964 	}
1965 
1966 	rcu_read_lock();
1967 
1968 	chanctx_conf = rcu_dereference(vif->bss_conf.chanctx_conf);
1969 	if (WARN_ON(!chanctx_conf)) {
1970 		rcu_read_unlock();
1971 		return;
1972 	}
1973 
1974 	sband = mvm->hw->wiphy->bands[chanctx_conf->def.chan->band];
1975 	own_he_cap = ieee80211_get_he_iftype_cap(sband,
1976 						 ieee80211_vif_type_p2p(vif));
1977 
1978 	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_ctxt_cmd.sta_id]);
1979 	if (IS_ERR_OR_NULL(sta)) {
1980 		rcu_read_unlock();
1981 		WARN(1, "Can't find STA to configure HE\n");
1982 		return;
1983 	}
1984 
1985 	if (!sta->deflink.he_cap.has_he) {
1986 		rcu_read_unlock();
1987 		return;
1988 	}
1989 
1990 	flags = 0;
1991 
1992 	/* Block 26-tone RU OFDMA transmissions */
1993 	if (mvmvif->he_ru_2mhz_block)
1994 		flags |= STA_CTXT_HE_RU_2MHZ_BLOCK;
1995 
1996 	/* HTC flags */
1997 	if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[0] &
1998 	    IEEE80211_HE_MAC_CAP0_HTC_HE)
1999 		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_SUPPORT);
2000 	if ((sta->deflink.he_cap.he_cap_elem.mac_cap_info[1] &
2001 	      IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION) ||
2002 	    (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2003 	      IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION)) {
2004 		u8 link_adap =
2005 			((sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2006 			  IEEE80211_HE_MAC_CAP2_LINK_ADAPTATION) << 1) +
2007 			 (sta->deflink.he_cap.he_cap_elem.mac_cap_info[1] &
2008 			  IEEE80211_HE_MAC_CAP1_LINK_ADAPTATION);
2009 
2010 		if (link_adap == 2)
2011 			sta_ctxt_cmd.htc_flags |=
2012 				cpu_to_le32(IWL_HE_HTC_LINK_ADAP_UNSOLICITED);
2013 		else if (link_adap == 3)
2014 			sta_ctxt_cmd.htc_flags |=
2015 				cpu_to_le32(IWL_HE_HTC_LINK_ADAP_BOTH);
2016 	}
2017 	if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] & IEEE80211_HE_MAC_CAP2_BSR)
2018 		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BSR_SUPP);
2019 	if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[3] &
2020 	    IEEE80211_HE_MAC_CAP3_OMI_CONTROL)
2021 		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_OMI_SUPP);
2022 	if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[4] & IEEE80211_HE_MAC_CAP4_BQR)
2023 		sta_ctxt_cmd.htc_flags |= cpu_to_le32(IWL_HE_HTC_BQR_SUPP);
2024 
2025 	/*
2026 	 * Initialize the PPE thresholds to "None" (7), as described in Table
2027 	 * 9-262ac of 80211.ax/D3.0.
2028 	 */
2029 	memset(&sta_ctxt_cmd.pkt_ext, IWL_HE_PKT_EXT_NONE,
2030 	       sizeof(sta_ctxt_cmd.pkt_ext));
2031 
2032 	/* If PPE Thresholds exist, parse them into a FW-familiar format. */
2033 	if (sta->deflink.he_cap.he_cap_elem.phy_cap_info[6] &
2034 		IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT) {
2035 		iwl_mvm_set_pkt_ext_from_he_ppe(mvm, sta,
2036 						&sta_ctxt_cmd.pkt_ext);
2037 		flags |= STA_CTXT_HE_PACKET_EXT;
2038 	/* PPE Thresholds doesn't exist - set the API PPE values
2039 	* according to Common Nominal Packet Padding fiels. */
2040 	} else {
2041 		u8 nominal_padding =
2042 			u8_get_bits(sta->deflink.he_cap.he_cap_elem.phy_cap_info[9],
2043 				    IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_MASK);
2044 		if (nominal_padding != IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_RESERVED)
2045 			iwl_mvm_set_pkt_ext_from_nominal_padding(&sta_ctxt_cmd.pkt_ext,
2046 								 nominal_padding,
2047 								 &flags);
2048 	}
2049 
2050 	if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2051 	    IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP)
2052 		flags |= STA_CTXT_HE_32BIT_BA_BITMAP;
2053 
2054 	if (sta->deflink.he_cap.he_cap_elem.mac_cap_info[2] &
2055 	    IEEE80211_HE_MAC_CAP2_ACK_EN)
2056 		flags |= STA_CTXT_HE_ACK_ENABLED;
2057 
2058 	rcu_read_unlock();
2059 
2060 	/* Mark MU EDCA as enabled, unless none detected on some AC */
2061 	flags |= STA_CTXT_HE_MU_EDCA_CW;
2062 	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
2063 		struct ieee80211_he_mu_edca_param_ac_rec *mu_edca =
2064 			&mvmvif->queue_params[i].mu_edca_param_rec;
2065 		u8 ac = iwl_mvm_mac80211_ac_to_ucode_ac(i);
2066 
2067 		if (!mvmvif->queue_params[i].mu_edca) {
2068 			flags &= ~STA_CTXT_HE_MU_EDCA_CW;
2069 			break;
2070 		}
2071 
2072 		sta_ctxt_cmd.trig_based_txf[ac].cwmin =
2073 			cpu_to_le16(mu_edca->ecw_min_max & 0xf);
2074 		sta_ctxt_cmd.trig_based_txf[ac].cwmax =
2075 			cpu_to_le16((mu_edca->ecw_min_max & 0xf0) >> 4);
2076 		sta_ctxt_cmd.trig_based_txf[ac].aifsn =
2077 			cpu_to_le16(mu_edca->aifsn);
2078 		sta_ctxt_cmd.trig_based_txf[ac].mu_time =
2079 			cpu_to_le16(mu_edca->mu_edca_timer);
2080 	}
2081 
2082 
2083 	if (vif->bss_conf.uora_exists) {
2084 		flags |= STA_CTXT_HE_TRIG_RND_ALLOC;
2085 
2086 		sta_ctxt_cmd.rand_alloc_ecwmin =
2087 			vif->bss_conf.uora_ocw_range & 0x7;
2088 		sta_ctxt_cmd.rand_alloc_ecwmax =
2089 			(vif->bss_conf.uora_ocw_range >> 3) & 0x7;
2090 	}
2091 
2092 	if (own_he_cap && !(own_he_cap->he_cap_elem.mac_cap_info[2] &
2093 			    IEEE80211_HE_MAC_CAP2_ACK_EN))
2094 		flags |= STA_CTXT_HE_NIC_NOT_ACK_ENABLED;
2095 
2096 	if (vif->bss_conf.nontransmitted) {
2097 		flags |= STA_CTXT_HE_REF_BSSID_VALID;
2098 		ether_addr_copy(sta_ctxt_cmd.ref_bssid_addr,
2099 				vif->bss_conf.transmitter_bssid);
2100 		sta_ctxt_cmd.max_bssid_indicator =
2101 			vif->bss_conf.bssid_indicator;
2102 		sta_ctxt_cmd.bssid_index = vif->bss_conf.bssid_index;
2103 		sta_ctxt_cmd.ema_ap = vif->bss_conf.ema_ap;
2104 		sta_ctxt_cmd.profile_periodicity =
2105 			vif->bss_conf.profile_periodicity;
2106 	}
2107 
2108 	sta_ctxt_cmd.flags = cpu_to_le32(flags);
2109 
2110 	if (ver < 3) {
2111 		/* fields before pkt_ext */
2112 		BUILD_BUG_ON(offsetof(typeof(sta_ctxt_cmd), pkt_ext) !=
2113 			     offsetof(typeof(sta_ctxt_cmd_v2), pkt_ext));
2114 		memcpy(&sta_ctxt_cmd_v2, &sta_ctxt_cmd,
2115 		       offsetof(typeof(sta_ctxt_cmd), pkt_ext));
2116 
2117 		/* pkt_ext */
2118 		for (i = 0;
2119 		     i < ARRAY_SIZE(sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th);
2120 		     i++) {
2121 			u8 bw;
2122 
2123 			for (bw = 0;
2124 			     bw < ARRAY_SIZE(sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th[i]);
2125 			     bw++) {
2126 				BUILD_BUG_ON(sizeof(sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw]) !=
2127 					     sizeof(sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th[i][bw]));
2128 
2129 				memcpy(&sta_ctxt_cmd_v2.pkt_ext.pkt_ext_qam_th[i][bw],
2130 				       &sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw],
2131 				       sizeof(sta_ctxt_cmd.pkt_ext.pkt_ext_qam_th[i][bw]));
2132 			}
2133 		}
2134 
2135 		/* fields after pkt_ext */
2136 		BUILD_BUG_ON(sizeof(sta_ctxt_cmd) -
2137 			     offsetofend(typeof(sta_ctxt_cmd), pkt_ext) !=
2138 			     sizeof(sta_ctxt_cmd_v2) -
2139 			     offsetofend(typeof(sta_ctxt_cmd_v2), pkt_ext));
2140 		memcpy((u8 *)&sta_ctxt_cmd_v2 +
2141 				offsetofend(typeof(sta_ctxt_cmd_v2), pkt_ext),
2142 		       (u8 *)&sta_ctxt_cmd +
2143 				offsetofend(typeof(sta_ctxt_cmd), pkt_ext),
2144 		       sizeof(sta_ctxt_cmd) -
2145 				offsetofend(typeof(sta_ctxt_cmd), pkt_ext));
2146 		sta_ctxt_cmd_v2.reserved3 = 0;
2147 	}
2148 
2149 	if (iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0, size, cmd))
2150 		IWL_ERR(mvm, "Failed to config FW to work HE!\n");
2151 }
2152 
iwl_mvm_protect_assoc(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u32 duration_override)2153 static void iwl_mvm_protect_assoc(struct iwl_mvm *mvm,
2154 				  struct ieee80211_vif *vif,
2155 				  u32 duration_override)
2156 {
2157 	u32 duration = IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS;
2158 	u32 min_duration = IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS;
2159 
2160 	if (duration_override > duration)
2161 		duration = duration_override;
2162 
2163 	/* Try really hard to protect the session and hear a beacon
2164 	 * The new session protection command allows us to protect the
2165 	 * session for a much longer time since the firmware will internally
2166 	 * create two events: a 300TU one with a very high priority that
2167 	 * won't be fragmented which should be enough for 99% of the cases,
2168 	 * and another one (which we configure here to be 900TU long) which
2169 	 * will have a slightly lower priority, but more importantly, can be
2170 	 * fragmented so that it'll allow other activities to run.
2171 	 */
2172 	if (fw_has_capa(&mvm->fw->ucode_capa,
2173 			IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD))
2174 		iwl_mvm_schedule_session_protection(mvm, vif, 900,
2175 						    min_duration, false);
2176 	else
2177 		iwl_mvm_protect_session(mvm, vif, duration,
2178 					min_duration, 500, false);
2179 }
2180 
iwl_mvm_bss_info_changed_station(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changes)2181 static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
2182 					     struct ieee80211_vif *vif,
2183 					     struct ieee80211_bss_conf *bss_conf,
2184 					     u64 changes)
2185 {
2186 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2187 	int ret;
2188 
2189 	/*
2190 	 * Re-calculate the tsf id, as the leader-follower relations depend
2191 	 * on the beacon interval, which was not known when the station
2192 	 * interface was added.
2193 	 */
2194 	if (changes & BSS_CHANGED_ASSOC && vif->cfg.assoc) {
2195 		if (vif->bss_conf.he_support &&
2196 		    !iwlwifi_mod_params.disable_11ax)
2197 			iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2198 
2199 		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2200 	}
2201 
2202 	/* Update MU EDCA params */
2203 	if (changes & BSS_CHANGED_QOS && mvmvif->associated &&
2204 	    vif->cfg.assoc && vif->bss_conf.he_support &&
2205 	    !iwlwifi_mod_params.disable_11ax)
2206 		iwl_mvm_cfg_he_sta(mvm, vif, mvmvif->ap_sta_id);
2207 
2208 	/*
2209 	 * If we're not associated yet, take the (new) BSSID before associating
2210 	 * so the firmware knows. If we're already associated, then use the old
2211 	 * BSSID here, and we'll send a cleared one later in the CHANGED_ASSOC
2212 	 * branch for disassociation below.
2213 	 */
2214 	if (changes & BSS_CHANGED_BSSID && !mvmvif->associated)
2215 		memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2216 
2217 	ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, mvmvif->bssid);
2218 	if (ret)
2219 		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2220 
2221 	/* after sending it once, adopt mac80211 data */
2222 	memcpy(mvmvif->bssid, bss_conf->bssid, ETH_ALEN);
2223 	mvmvif->associated = vif->cfg.assoc;
2224 
2225 	if (changes & BSS_CHANGED_ASSOC) {
2226 		if (vif->cfg.assoc) {
2227 			/* clear statistics to get clean beacon counter */
2228 			iwl_mvm_request_statistics(mvm, true);
2229 			memset(&mvmvif->beacon_stats, 0,
2230 			       sizeof(mvmvif->beacon_stats));
2231 
2232 			/* add quota for this interface */
2233 			ret = iwl_mvm_update_quotas(mvm, true, NULL);
2234 			if (ret) {
2235 				IWL_ERR(mvm, "failed to update quotas\n");
2236 				return;
2237 			}
2238 
2239 			if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2240 				     &mvm->status) &&
2241 			    !fw_has_capa(&mvm->fw->ucode_capa,
2242 					 IWL_UCODE_TLV_CAPA_SESSION_PROT_CMD)) {
2243 				/*
2244 				 * If we're restarting then the firmware will
2245 				 * obviously have lost synchronisation with
2246 				 * the AP. It will attempt to synchronise by
2247 				 * itself, but we can make it more reliable by
2248 				 * scheduling a session protection time event.
2249 				 *
2250 				 * The firmware needs to receive a beacon to
2251 				 * catch up with synchronisation, use 110% of
2252 				 * the beacon interval.
2253 				 *
2254 				 * Set a large maximum delay to allow for more
2255 				 * than a single interface.
2256 				 *
2257 				 * For new firmware versions, rely on the
2258 				 * firmware. This is relevant for DCM scenarios
2259 				 * only anyway.
2260 				 */
2261 				u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
2262 				iwl_mvm_protect_session(mvm, vif, dur, dur,
2263 							5 * dur, false);
2264 			} else if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2265 					     &mvm->status) &&
2266 				   !vif->bss_conf.dtim_period) {
2267 				/*
2268 				 * If we're not restarting and still haven't
2269 				 * heard a beacon (dtim period unknown) then
2270 				 * make sure we still have enough minimum time
2271 				 * remaining in the time event, since the auth
2272 				 * might actually have taken quite a while
2273 				 * (especially for SAE) and so the remaining
2274 				 * time could be small without us having heard
2275 				 * a beacon yet.
2276 				 */
2277 				iwl_mvm_protect_assoc(mvm, vif, 0);
2278 			}
2279 
2280 			iwl_mvm_sf_update(mvm, vif, false);
2281 			iwl_mvm_power_vif_assoc(mvm, vif);
2282 			if (vif->p2p) {
2283 				iwl_mvm_update_smps(mvm, vif,
2284 						    IWL_MVM_SMPS_REQ_PROT,
2285 						    IEEE80211_SMPS_DYNAMIC);
2286 			}
2287 		} else if (mvmvif->ap_sta_id != IWL_MVM_INVALID_STA) {
2288 			iwl_mvm_mei_host_disassociated(mvm);
2289 			/*
2290 			 * If update fails - SF might be running in associated
2291 			 * mode while disassociated - which is forbidden.
2292 			 */
2293 			ret = iwl_mvm_sf_update(mvm, vif, false);
2294 			WARN_ONCE(ret &&
2295 				  !test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
2296 					    &mvm->status),
2297 				  "Failed to update SF upon disassociation\n");
2298 
2299 			/*
2300 			 * If we get an assert during the connection (after the
2301 			 * station has been added, but before the vif is set
2302 			 * to associated), mac80211 will re-add the station and
2303 			 * then configure the vif. Since the vif is not
2304 			 * associated, we would remove the station here and
2305 			 * this would fail the recovery.
2306 			 */
2307 			if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
2308 				      &mvm->status)) {
2309 				/*
2310 				 * Remove AP station now that
2311 				 * the MAC is unassoc
2312 				 */
2313 				ret = iwl_mvm_rm_sta_id(mvm, vif,
2314 							mvmvif->ap_sta_id);
2315 				if (ret)
2316 					IWL_ERR(mvm,
2317 						"failed to remove AP station\n");
2318 
2319 				mvmvif->ap_sta_id = IWL_MVM_INVALID_STA;
2320 			}
2321 
2322 			/* remove quota for this interface */
2323 			ret = iwl_mvm_update_quotas(mvm, false, NULL);
2324 			if (ret)
2325 				IWL_ERR(mvm, "failed to update quotas\n");
2326 
2327 			/* this will take the cleared BSSID from bss_conf */
2328 			ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
2329 			if (ret)
2330 				IWL_ERR(mvm,
2331 					"failed to update MAC %pM (clear after unassoc)\n",
2332 					vif->addr);
2333 		}
2334 
2335 		/*
2336 		 * The firmware tracks the MU-MIMO group on its own.
2337 		 * However, on HW restart we should restore this data.
2338 		 */
2339 		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2340 		    (changes & BSS_CHANGED_MU_GROUPS) && vif->bss_conf.mu_mimo_owner) {
2341 			ret = iwl_mvm_update_mu_groups(mvm, vif);
2342 			if (ret)
2343 				IWL_ERR(mvm,
2344 					"failed to update VHT MU_MIMO groups\n");
2345 		}
2346 
2347 		iwl_mvm_recalc_multicast(mvm);
2348 
2349 		/* reset rssi values */
2350 		mvmvif->bf_data.ave_beacon_signal = 0;
2351 
2352 		iwl_mvm_bt_coex_vif_change(mvm);
2353 		iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
2354 				    IEEE80211_SMPS_AUTOMATIC);
2355 		if (fw_has_capa(&mvm->fw->ucode_capa,
2356 				IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2357 			iwl_mvm_config_scan(mvm);
2358 	}
2359 
2360 	if (changes & BSS_CHANGED_BEACON_INFO) {
2361 		/*
2362 		 * We received a beacon from the associated AP so
2363 		 * remove the session protection.
2364 		 */
2365 		iwl_mvm_stop_session_protection(mvm, vif);
2366 
2367 		iwl_mvm_sf_update(mvm, vif, false);
2368 		WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
2369 	}
2370 
2371 	if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS | BSS_CHANGED_QOS |
2372 		       /*
2373 			* Send power command on every beacon change,
2374 			* because we may have not enabled beacon abort yet.
2375 			*/
2376 		       BSS_CHANGED_BEACON_INFO)) {
2377 		ret = iwl_mvm_power_update_mac(mvm);
2378 		if (ret)
2379 			IWL_ERR(mvm, "failed to update power mode\n");
2380 	}
2381 
2382 	if (changes & BSS_CHANGED_CQM) {
2383 		IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
2384 		/* reset cqm events tracking */
2385 		mvmvif->bf_data.last_cqm_event = 0;
2386 		if (mvmvif->bf_data.bf_enabled) {
2387 			ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2388 			if (ret)
2389 				IWL_ERR(mvm,
2390 					"failed to update CQM thresholds\n");
2391 		}
2392 	}
2393 
2394 	if (changes & BSS_CHANGED_BANDWIDTH)
2395 		iwl_mvm_apply_fw_smps_request(vif);
2396 }
2397 
iwl_mvm_start_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2398 static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
2399 				 struct ieee80211_vif *vif,
2400 				 struct ieee80211_bss_conf *link_conf)
2401 {
2402 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2403 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2404 	int ret, i;
2405 
2406 	mutex_lock(&mvm->mutex);
2407 
2408 	/* Send the beacon template */
2409 	ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
2410 	if (ret)
2411 		goto out_unlock;
2412 
2413 	/*
2414 	 * Re-calculate the tsf id, as the leader-follower relations depend on
2415 	 * the beacon interval, which was not known when the AP interface
2416 	 * was added.
2417 	 */
2418 	if (vif->type == NL80211_IFTYPE_AP)
2419 		iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
2420 
2421 	mvmvif->ap_assoc_sta_count = 0;
2422 
2423 	/* Add the mac context */
2424 	ret = iwl_mvm_mac_ctxt_add(mvm, vif);
2425 	if (ret)
2426 		goto out_unlock;
2427 
2428 	/* Perform the binding */
2429 	ret = iwl_mvm_binding_add_vif(mvm, vif);
2430 	if (ret)
2431 		goto out_remove;
2432 
2433 	/*
2434 	 * This is not very nice, but the simplest:
2435 	 * For older FWs adding the mcast sta before the bcast station may
2436 	 * cause assert 0x2b00.
2437 	 * This is fixed in later FW so make the order of removal depend on
2438 	 * the TLV
2439 	 */
2440 	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {
2441 		ret = iwl_mvm_add_mcast_sta(mvm, vif);
2442 		if (ret)
2443 			goto out_unbind;
2444 		/*
2445 		 * Send the bcast station. At this stage the TBTT and DTIM time
2446 		 * events are added and applied to the scheduler
2447 		 */
2448 		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2449 		if (ret) {
2450 			iwl_mvm_rm_mcast_sta(mvm, vif);
2451 			goto out_unbind;
2452 		}
2453 	} else {
2454 		/*
2455 		 * Send the bcast station. At this stage the TBTT and DTIM time
2456 		 * events are added and applied to the scheduler
2457 		 */
2458 		ret = iwl_mvm_send_add_bcast_sta(mvm, vif);
2459 		if (ret)
2460 			goto out_unbind;
2461 		ret = iwl_mvm_add_mcast_sta(mvm, vif);
2462 		if (ret) {
2463 			iwl_mvm_send_rm_bcast_sta(mvm, vif);
2464 			goto out_unbind;
2465 		}
2466 	}
2467 
2468 	/* must be set before quota calculations */
2469 	mvmvif->ap_ibss_active = true;
2470 
2471 	/* send all the early keys to the device now */
2472 	for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
2473 		struct ieee80211_key_conf *key = mvmvif->ap_early_keys[i];
2474 
2475 		if (!key)
2476 			continue;
2477 
2478 		mvmvif->ap_early_keys[i] = NULL;
2479 
2480 		ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
2481 		if (ret)
2482 			goto out_quota_failed;
2483 	}
2484 
2485 	if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2486 		iwl_mvm_vif_set_low_latency(mvmvif, true,
2487 					    LOW_LATENCY_VIF_TYPE);
2488 		iwl_mvm_send_low_latency_cmd(mvm, true, mvmvif->id);
2489 	}
2490 
2491 	/* power updated needs to be done before quotas */
2492 	iwl_mvm_power_update_mac(mvm);
2493 
2494 	ret = iwl_mvm_update_quotas(mvm, false, NULL);
2495 	if (ret)
2496 		goto out_quota_failed;
2497 
2498 	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2499 	if (vif->p2p && mvm->p2p_device_vif)
2500 		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2501 
2502 	iwl_mvm_bt_coex_vif_change(mvm);
2503 
2504 	/* we don't support TDLS during DCM */
2505 	if (iwl_mvm_phy_ctx_count(mvm) > 1)
2506 		iwl_mvm_teardown_tdls_peers(mvm);
2507 
2508 	iwl_mvm_ftm_restart_responder(mvm, vif);
2509 
2510 	goto out_unlock;
2511 
2512 out_quota_failed:
2513 	iwl_mvm_power_update_mac(mvm);
2514 	mvmvif->ap_ibss_active = false;
2515 	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2516 	iwl_mvm_rm_mcast_sta(mvm, vif);
2517 out_unbind:
2518 	iwl_mvm_binding_remove_vif(mvm, vif);
2519 out_remove:
2520 	iwl_mvm_mac_ctxt_remove(mvm, vif);
2521 out_unlock:
2522 	mutex_unlock(&mvm->mutex);
2523 	return ret;
2524 }
2525 
iwl_mvm_start_ap(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2526 static int iwl_mvm_start_ap(struct ieee80211_hw *hw,
2527 			    struct ieee80211_vif *vif,
2528 			    struct ieee80211_bss_conf *link_conf)
2529 {
2530 	return iwl_mvm_start_ap_ibss(hw, vif, link_conf);
2531 }
2532 
iwl_mvm_start_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2533 static int iwl_mvm_start_ibss(struct ieee80211_hw *hw,
2534 			      struct ieee80211_vif *vif)
2535 {
2536 	return iwl_mvm_start_ap_ibss(hw, vif, &vif->bss_conf);
2537 }
2538 
iwl_mvm_stop_ap_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2539 static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
2540 				 struct ieee80211_vif *vif,
2541 				 struct ieee80211_bss_conf *link_conf)
2542 {
2543 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2544 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2545 
2546 	iwl_mvm_prepare_mac_removal(mvm, vif);
2547 
2548 	mutex_lock(&mvm->mutex);
2549 
2550 	/* Handle AP stop while in CSA */
2551 	if (rcu_access_pointer(mvm->csa_vif) == vif) {
2552 		iwl_mvm_remove_time_event(mvm, mvmvif,
2553 					  &mvmvif->time_event_data);
2554 		RCU_INIT_POINTER(mvm->csa_vif, NULL);
2555 		mvmvif->csa_countdown = false;
2556 	}
2557 
2558 	if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
2559 		RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
2560 		mvm->csa_tx_block_bcn_timeout = 0;
2561 	}
2562 
2563 	mvmvif->ap_ibss_active = false;
2564 	mvm->ap_last_beacon_gp2 = 0;
2565 
2566 	if (vif->type == NL80211_IFTYPE_AP && !vif->p2p) {
2567 		iwl_mvm_vif_set_low_latency(mvmvif, false,
2568 					    LOW_LATENCY_VIF_TYPE);
2569 		iwl_mvm_send_low_latency_cmd(mvm, false,  mvmvif->id);
2570 	}
2571 
2572 	iwl_mvm_bt_coex_vif_change(mvm);
2573 
2574 	/* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
2575 	if (vif->p2p && mvm->p2p_device_vif)
2576 		iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false, NULL);
2577 
2578 	iwl_mvm_update_quotas(mvm, false, NULL);
2579 
2580 	iwl_mvm_ftm_responder_clear(mvm, vif);
2581 
2582 	/*
2583 	 * This is not very nice, but the simplest:
2584 	 * For older FWs removing the mcast sta before the bcast station may
2585 	 * cause assert 0x2b00.
2586 	 * This is fixed in later FW (which will stop beaconing when removing
2587 	 * bcast station).
2588 	 * So make the order of removal depend on the TLV
2589 	 */
2590 	if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2591 		iwl_mvm_rm_mcast_sta(mvm, vif);
2592 	iwl_mvm_send_rm_bcast_sta(mvm, vif);
2593 	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))
2594 		iwl_mvm_rm_mcast_sta(mvm, vif);
2595 	iwl_mvm_binding_remove_vif(mvm, vif);
2596 
2597 	iwl_mvm_power_update_mac(mvm);
2598 
2599 	iwl_mvm_mac_ctxt_remove(mvm, vif);
2600 
2601 	mutex_unlock(&mvm->mutex);
2602 }
2603 
iwl_mvm_stop_ap(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf)2604 static void iwl_mvm_stop_ap(struct ieee80211_hw *hw,
2605 			    struct ieee80211_vif *vif,
2606 			    struct ieee80211_bss_conf *link_conf)
2607 {
2608 	iwl_mvm_stop_ap_ibss(hw, vif, link_conf);
2609 }
2610 
iwl_mvm_stop_ibss(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2611 static void iwl_mvm_stop_ibss(struct ieee80211_hw *hw,
2612 			      struct ieee80211_vif *vif)
2613 {
2614 	iwl_mvm_stop_ap_ibss(hw, vif, &vif->bss_conf);
2615 }
2616 
2617 static void
iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changes)2618 iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
2619 				 struct ieee80211_vif *vif,
2620 				 struct ieee80211_bss_conf *bss_conf,
2621 				 u64 changes)
2622 {
2623 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2624 
2625 	/* Changes will be applied when the AP/IBSS is started */
2626 	if (!mvmvif->ap_ibss_active)
2627 		return;
2628 
2629 	if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
2630 		       BSS_CHANGED_BANDWIDTH | BSS_CHANGED_QOS) &&
2631 	    iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL))
2632 		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
2633 
2634 	/* Need to send a new beacon template to the FW */
2635 	if (changes & BSS_CHANGED_BEACON &&
2636 	    iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
2637 		IWL_WARN(mvm, "Failed updating beacon data\n");
2638 
2639 	if (changes & BSS_CHANGED_FTM_RESPONDER) {
2640 		int ret = iwl_mvm_ftm_start_responder(mvm, vif);
2641 
2642 		if (ret)
2643 			IWL_WARN(mvm, "Failed to enable FTM responder (%d)\n",
2644 				 ret);
2645 	}
2646 
2647 }
2648 
iwl_mvm_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u64 changes)2649 static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
2650 				     struct ieee80211_vif *vif,
2651 				     struct ieee80211_bss_conf *bss_conf,
2652 				     u64 changes)
2653 {
2654 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2655 
2656 	mutex_lock(&mvm->mutex);
2657 
2658 	if (changes & BSS_CHANGED_IDLE && !vif->cfg.idle)
2659 		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2660 
2661 	switch (vif->type) {
2662 	case NL80211_IFTYPE_STATION:
2663 		iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
2664 		break;
2665 	case NL80211_IFTYPE_AP:
2666 	case NL80211_IFTYPE_ADHOC:
2667 		iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
2668 		break;
2669 	case NL80211_IFTYPE_MONITOR:
2670 		if (changes & BSS_CHANGED_MU_GROUPS)
2671 			iwl_mvm_update_mu_groups(mvm, vif);
2672 		break;
2673 	default:
2674 		/* shouldn't happen */
2675 		WARN_ON_ONCE(1);
2676 	}
2677 
2678 	if (changes & BSS_CHANGED_TXPOWER) {
2679 		IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d dBm\n",
2680 				bss_conf->txpower);
2681 		iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
2682 	}
2683 
2684 	mutex_unlock(&mvm->mutex);
2685 }
2686 
iwl_mvm_mac_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_scan_request * hw_req)2687 static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
2688 			       struct ieee80211_vif *vif,
2689 			       struct ieee80211_scan_request *hw_req)
2690 {
2691 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2692 	int ret;
2693 
2694 	if (hw_req->req.n_channels == 0 ||
2695 	    hw_req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
2696 		return -EINVAL;
2697 
2698 	mutex_lock(&mvm->mutex);
2699 	ret = iwl_mvm_reg_scan_start(mvm, vif, &hw_req->req, &hw_req->ies);
2700 	mutex_unlock(&mvm->mutex);
2701 
2702 	return ret;
2703 }
2704 
iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2705 static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
2706 				       struct ieee80211_vif *vif)
2707 {
2708 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2709 
2710 	mutex_lock(&mvm->mutex);
2711 
2712 	/* Due to a race condition, it's possible that mac80211 asks
2713 	 * us to stop a hw_scan when it's already stopped.  This can
2714 	 * happen, for instance, if we stopped the scan ourselves,
2715 	 * called ieee80211_scan_completed() and the userspace called
2716 	 * cancel scan scan before ieee80211_scan_work() could run.
2717 	 * To handle that, simply return if the scan is not running.
2718 	*/
2719 	if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
2720 		iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2721 
2722 	mutex_unlock(&mvm->mutex);
2723 }
2724 
2725 static void
iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tids,int num_frames,enum ieee80211_frame_release_type reason,bool more_data)2726 iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
2727 				  struct ieee80211_sta *sta, u16 tids,
2728 				  int num_frames,
2729 				  enum ieee80211_frame_release_type reason,
2730 				  bool more_data)
2731 {
2732 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2733 
2734 	/* Called when we need to transmit (a) frame(s) from mac80211 */
2735 
2736 	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2737 					  tids, more_data, false);
2738 }
2739 
2740 static void
iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tids,int num_frames,enum ieee80211_frame_release_type reason,bool more_data)2741 iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
2742 				    struct ieee80211_sta *sta, u16 tids,
2743 				    int num_frames,
2744 				    enum ieee80211_frame_release_type reason,
2745 				    bool more_data)
2746 {
2747 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2748 
2749 	/* Called when we need to transmit (a) frame(s) from agg or dqa queue */
2750 
2751 	iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
2752 					  tids, more_data, true);
2753 }
2754 
__iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2755 static void __iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2756 				     enum sta_notify_cmd cmd,
2757 				     struct ieee80211_sta *sta)
2758 {
2759 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2760 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
2761 	unsigned long txqs = 0, tids = 0;
2762 	int tid;
2763 
2764 	/*
2765 	 * If we have TVQM then we get too high queue numbers - luckily
2766 	 * we really shouldn't get here with that because such hardware
2767 	 * should have firmware supporting buffer station offload.
2768 	 */
2769 	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
2770 		return;
2771 
2772 	spin_lock_bh(&mvmsta->lock);
2773 	for (tid = 0; tid < ARRAY_SIZE(mvmsta->tid_data); tid++) {
2774 		struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
2775 
2776 		if (tid_data->txq_id == IWL_MVM_INVALID_QUEUE)
2777 			continue;
2778 
2779 		__set_bit(tid_data->txq_id, &txqs);
2780 
2781 		if (iwl_mvm_tid_queued(mvm, tid_data) == 0)
2782 			continue;
2783 
2784 		__set_bit(tid, &tids);
2785 	}
2786 
2787 	switch (cmd) {
2788 	case STA_NOTIFY_SLEEP:
2789 		for_each_set_bit(tid, &tids, IWL_MAX_TID_COUNT)
2790 			ieee80211_sta_set_buffered(sta, tid, true);
2791 
2792 		if (txqs)
2793 			iwl_trans_freeze_txq_timer(mvm->trans, txqs, true);
2794 		/*
2795 		 * The fw updates the STA to be asleep. Tx packets on the Tx
2796 		 * queues to this station will not be transmitted. The fw will
2797 		 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
2798 		 */
2799 		break;
2800 	case STA_NOTIFY_AWAKE:
2801 		if (WARN_ON(mvmsta->sta_id == IWL_MVM_INVALID_STA))
2802 			break;
2803 
2804 		if (txqs)
2805 			iwl_trans_freeze_txq_timer(mvm->trans, txqs, false);
2806 		iwl_mvm_sta_modify_ps_wake(mvm, sta);
2807 		break;
2808 	default:
2809 		break;
2810 	}
2811 	spin_unlock_bh(&mvmsta->lock);
2812 }
2813 
iwl_mvm_mac_sta_notify(struct ieee80211_hw * hw,struct ieee80211_vif * vif,enum sta_notify_cmd cmd,struct ieee80211_sta * sta)2814 static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
2815 				   struct ieee80211_vif *vif,
2816 				   enum sta_notify_cmd cmd,
2817 				   struct ieee80211_sta *sta)
2818 {
2819 	__iwl_mvm_mac_sta_notify(hw, cmd, sta);
2820 }
2821 
iwl_mvm_sta_pm_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2822 void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
2823 {
2824 	struct iwl_rx_packet *pkt = rxb_addr(rxb);
2825 	struct iwl_mvm_pm_state_notification *notif = (void *)pkt->data;
2826 	struct ieee80211_sta *sta;
2827 	struct iwl_mvm_sta *mvmsta;
2828 	bool sleeping = (notif->type != IWL_MVM_PM_EVENT_AWAKE);
2829 
2830 	if (WARN_ON(notif->sta_id >= mvm->fw->ucode_capa.num_stations))
2831 		return;
2832 
2833 	rcu_read_lock();
2834 	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
2835 	if (WARN_ON(IS_ERR_OR_NULL(sta))) {
2836 		rcu_read_unlock();
2837 		return;
2838 	}
2839 
2840 	mvmsta = iwl_mvm_sta_from_mac80211(sta);
2841 
2842 	if (!mvmsta->vif ||
2843 	    mvmsta->vif->type != NL80211_IFTYPE_AP) {
2844 		rcu_read_unlock();
2845 		return;
2846 	}
2847 
2848 	if (mvmsta->sleeping != sleeping) {
2849 		mvmsta->sleeping = sleeping;
2850 		__iwl_mvm_mac_sta_notify(mvm->hw,
2851 			sleeping ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE,
2852 			sta);
2853 		ieee80211_sta_ps_transition(sta, sleeping);
2854 	}
2855 
2856 	if (sleeping) {
2857 		switch (notif->type) {
2858 		case IWL_MVM_PM_EVENT_AWAKE:
2859 		case IWL_MVM_PM_EVENT_ASLEEP:
2860 			break;
2861 		case IWL_MVM_PM_EVENT_UAPSD:
2862 			ieee80211_sta_uapsd_trigger(sta, IEEE80211_NUM_TIDS);
2863 			break;
2864 		case IWL_MVM_PM_EVENT_PS_POLL:
2865 			ieee80211_sta_pspoll(sta);
2866 			break;
2867 		default:
2868 			break;
2869 		}
2870 	}
2871 
2872 	rcu_read_unlock();
2873 }
2874 
iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta)2875 static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
2876 				       struct ieee80211_vif *vif,
2877 				       struct ieee80211_sta *sta)
2878 {
2879 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2880 	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
2881 
2882 	/*
2883 	 * This is called before mac80211 does RCU synchronisation,
2884 	 * so here we already invalidate our internal RCU-protected
2885 	 * station pointer. The rest of the code will thus no longer
2886 	 * be able to find the station this way, and we don't rely
2887 	 * on further RCU synchronisation after the sta_state()
2888 	 * callback deleted the station.
2889 	 */
2890 	mutex_lock(&mvm->mutex);
2891 	if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
2892 		rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
2893 				   ERR_PTR(-ENOENT));
2894 
2895 	mutex_unlock(&mvm->mutex);
2896 }
2897 
iwl_mvm_check_uapsd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const u8 * bssid)2898 static void iwl_mvm_check_uapsd(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2899 				const u8 *bssid)
2900 {
2901 	int i;
2902 
2903 	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
2904 		struct iwl_mvm_tcm_mac *mdata;
2905 
2906 		mdata = &mvm->tcm.data[iwl_mvm_vif_from_mac80211(vif)->id];
2907 		ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
2908 		mdata->opened_rx_ba_sessions = false;
2909 	}
2910 
2911 	if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT))
2912 		return;
2913 
2914 	if (vif->p2p && !iwl_mvm_is_p2p_scm_uapsd_supported(mvm)) {
2915 		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2916 		return;
2917 	}
2918 
2919 	if (!vif->p2p &&
2920 	    (iwlwifi_mod_params.uapsd_disable & IWL_DISABLE_UAPSD_BSS)) {
2921 		vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2922 		return;
2923 	}
2924 
2925 	for (i = 0; i < IWL_MVM_UAPSD_NOAGG_LIST_LEN; i++) {
2926 		if (ether_addr_equal(mvm->uapsd_noagg_bssids[i].addr, bssid)) {
2927 			vif->driver_flags &= ~IEEE80211_VIF_SUPPORTS_UAPSD;
2928 			return;
2929 		}
2930 	}
2931 
2932 	vif->driver_flags |= IEEE80211_VIF_SUPPORTS_UAPSD;
2933 }
2934 
2935 static void
iwl_mvm_tdls_check_trigger(struct iwl_mvm * mvm,struct ieee80211_vif * vif,u8 * peer_addr,enum nl80211_tdls_operation action)2936 iwl_mvm_tdls_check_trigger(struct iwl_mvm *mvm,
2937 			   struct ieee80211_vif *vif, u8 *peer_addr,
2938 			   enum nl80211_tdls_operation action)
2939 {
2940 	struct iwl_fw_dbg_trigger_tlv *trig;
2941 	struct iwl_fw_dbg_trigger_tdls *tdls_trig;
2942 
2943 	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
2944 				     FW_DBG_TRIGGER_TDLS);
2945 	if (!trig)
2946 		return;
2947 
2948 	tdls_trig = (void *)trig->data;
2949 
2950 	if (!(tdls_trig->action_bitmap & BIT(action)))
2951 		return;
2952 
2953 	if (tdls_trig->peer_mode &&
2954 	    memcmp(tdls_trig->peer, peer_addr, ETH_ALEN) != 0)
2955 		return;
2956 
2957 	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
2958 				"TDLS event occurred, peer %pM, action %d",
2959 				peer_addr, action);
2960 }
2961 
2962 struct iwl_mvm_he_obss_narrow_bw_ru_data {
2963 	bool tolerated;
2964 };
2965 
iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy * wiphy,struct cfg80211_bss * bss,void * _data)2966 static void iwl_mvm_check_he_obss_narrow_bw_ru_iter(struct wiphy *wiphy,
2967 						    struct cfg80211_bss *bss,
2968 						    void *_data)
2969 {
2970 	struct iwl_mvm_he_obss_narrow_bw_ru_data *data = _data;
2971 	const struct cfg80211_bss_ies *ies;
2972 	const struct element *elem;
2973 
2974 	rcu_read_lock();
2975 	ies = rcu_dereference(bss->ies);
2976 	elem = cfg80211_find_elem(WLAN_EID_EXT_CAPABILITY, ies->data,
2977 				  ies->len);
2978 
2979 	if (!elem || elem->datalen < 10 ||
2980 	    !(elem->data[10] &
2981 	      WLAN_EXT_CAPA10_OBSS_NARROW_BW_RU_TOLERANCE_SUPPORT)) {
2982 		data->tolerated = false;
2983 	}
2984 	rcu_read_unlock();
2985 }
2986 
iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw * hw,struct ieee80211_vif * vif)2987 static void iwl_mvm_check_he_obss_narrow_bw_ru(struct ieee80211_hw *hw,
2988 					       struct ieee80211_vif *vif)
2989 {
2990 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2991 	struct iwl_mvm_he_obss_narrow_bw_ru_data iter_data = {
2992 		.tolerated = true,
2993 	};
2994 
2995 	if (!(vif->bss_conf.chandef.chan->flags & IEEE80211_CHAN_RADAR)) {
2996 		mvmvif->he_ru_2mhz_block = false;
2997 		return;
2998 	}
2999 
3000 	cfg80211_bss_iter(hw->wiphy, &vif->bss_conf.chandef,
3001 			  iwl_mvm_check_he_obss_narrow_bw_ru_iter,
3002 			  &iter_data);
3003 
3004 	/*
3005 	 * If there is at least one AP on radar channel that cannot
3006 	 * tolerate 26-tone RU UL OFDMA transmissions using HE TB PPDU.
3007 	 */
3008 	mvmvif->he_ru_2mhz_block = !iter_data.tolerated;
3009 }
3010 
iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm * mvm,struct ieee80211_vif * vif)3011 static void iwl_mvm_reset_cca_40mhz_workaround(struct iwl_mvm *mvm,
3012 					       struct ieee80211_vif *vif)
3013 {
3014 	struct ieee80211_supported_band *sband;
3015 	const struct ieee80211_sta_he_cap *he_cap;
3016 
3017 	if (vif->type != NL80211_IFTYPE_STATION)
3018 		return;
3019 
3020 	if (!mvm->cca_40mhz_workaround)
3021 		return;
3022 
3023 	/* decrement and check that we reached zero */
3024 	mvm->cca_40mhz_workaround--;
3025 	if (mvm->cca_40mhz_workaround)
3026 		return;
3027 
3028 	sband = mvm->hw->wiphy->bands[NL80211_BAND_2GHZ];
3029 
3030 	sband->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
3031 
3032 	he_cap = ieee80211_get_he_iftype_cap(sband,
3033 					     ieee80211_vif_type_p2p(vif));
3034 
3035 	if (he_cap) {
3036 		/* we know that ours is writable */
3037 		struct ieee80211_sta_he_cap *he = (void *)(uintptr_t)he_cap;
3038 
3039 		he->he_cap_elem.phy_cap_info[0] |=
3040 			IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G;
3041 	}
3042 }
3043 
iwl_mvm_mei_host_associated(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_sta * mvm_sta)3044 static void iwl_mvm_mei_host_associated(struct iwl_mvm *mvm,
3045 					struct ieee80211_vif *vif,
3046 					struct iwl_mvm_sta *mvm_sta)
3047 {
3048 #if IS_ENABLED(CONFIG_IWLMEI)
3049 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3050 	struct iwl_mei_conn_info conn_info = {
3051 		.ssid_len = vif->cfg.ssid_len,
3052 		.channel = vif->bss_conf.chandef.chan->hw_value,
3053 	};
3054 
3055 	if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3056 		return;
3057 
3058 	if (!mvm->mei_registered)
3059 		return;
3060 
3061 	switch (mvm_sta->pairwise_cipher) {
3062 	case WLAN_CIPHER_SUITE_CCMP:
3063 		conn_info.pairwise_cipher = IWL_MEI_CIPHER_CCMP;
3064 		break;
3065 	case WLAN_CIPHER_SUITE_GCMP:
3066 		conn_info.pairwise_cipher = IWL_MEI_CIPHER_GCMP;
3067 		break;
3068 	case WLAN_CIPHER_SUITE_GCMP_256:
3069 		conn_info.pairwise_cipher = IWL_MEI_CIPHER_GCMP_256;
3070 		break;
3071 	case 0:
3072 		/* open profile */
3073 		break;
3074 	default:
3075 		/* cipher not supported, don't send anything to iwlmei */
3076 		return;
3077 	}
3078 
3079 	switch (mvmvif->rekey_data.akm) {
3080 	case WLAN_AKM_SUITE_SAE & 0xff:
3081 		conn_info.auth_mode = IWL_MEI_AKM_AUTH_SAE;
3082 		break;
3083 	case WLAN_AKM_SUITE_PSK & 0xff:
3084 		conn_info.auth_mode = IWL_MEI_AKM_AUTH_RSNA_PSK;
3085 		break;
3086 	case WLAN_AKM_SUITE_8021X & 0xff:
3087 		conn_info.auth_mode = IWL_MEI_AKM_AUTH_RSNA;
3088 		break;
3089 	case 0:
3090 		/* open profile */
3091 		conn_info.auth_mode = IWL_MEI_AKM_AUTH_OPEN;
3092 		break;
3093 	default:
3094 		/* auth method / AKM not supported */
3095 		/* TODO: All the FT vesions of these? */
3096 		return;
3097 	}
3098 
3099 	memcpy(conn_info.ssid, vif->cfg.ssid, vif->cfg.ssid_len);
3100 	memcpy(conn_info.bssid,  vif->bss_conf.bssid, ETH_ALEN);
3101 
3102 	/* TODO: add support for collocated AP data */
3103 	iwl_mei_host_associated(&conn_info, NULL);
3104 #endif
3105 }
3106 
iwl_mvm_mac_sta_state(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,enum ieee80211_sta_state old_state,enum ieee80211_sta_state new_state)3107 static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
3108 				 struct ieee80211_vif *vif,
3109 				 struct ieee80211_sta *sta,
3110 				 enum ieee80211_sta_state old_state,
3111 				 enum ieee80211_sta_state new_state)
3112 {
3113 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3114 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3115 	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
3116 	int ret;
3117 
3118 	IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
3119 			   sta->addr, old_state, new_state);
3120 
3121 	/* this would be a mac80211 bug ... but don't crash */
3122 	if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
3123 		return test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status) ? 0 : -EINVAL;
3124 
3125 	/*
3126 	 * If we are in a STA removal flow and in DQA mode:
3127 	 *
3128 	 * This is after the sync_rcu part, so the queues have already been
3129 	 * flushed. No more TXs on their way in mac80211's path, and no more in
3130 	 * the queues.
3131 	 * Also, we won't be getting any new TX frames for this station.
3132 	 * What we might have are deferred TX frames that need to be taken care
3133 	 * of.
3134 	 *
3135 	 * Drop any still-queued deferred-frame before removing the STA, and
3136 	 * make sure the worker is no longer handling frames for this STA.
3137 	 */
3138 	if (old_state == IEEE80211_STA_NONE &&
3139 	    new_state == IEEE80211_STA_NOTEXIST) {
3140 		flush_work(&mvm->add_stream_wk);
3141 
3142 		/*
3143 		 * No need to make sure deferred TX indication is off since the
3144 		 * worker will already remove it if it was on
3145 		 */
3146 
3147 		/*
3148 		 * Additionally, reset the 40 MHz capability if we disconnected
3149 		 * from the AP now.
3150 		 */
3151 		iwl_mvm_reset_cca_40mhz_workaround(mvm, vif);
3152 	}
3153 
3154 	mutex_lock(&mvm->mutex);
3155 	/* track whether or not the station is associated */
3156 	mvm_sta->sta_state = new_state;
3157 
3158 	if (old_state == IEEE80211_STA_NOTEXIST &&
3159 	    new_state == IEEE80211_STA_NONE) {
3160 		/*
3161 		 * Firmware bug - it'll crash if the beacon interval is less
3162 		 * than 16. We can't avoid connecting at all, so refuse the
3163 		 * station state change, this will cause mac80211 to abandon
3164 		 * attempts to connect to this AP, and eventually wpa_s will
3165 		 * blocklist the AP...
3166 		 */
3167 		if (vif->type == NL80211_IFTYPE_STATION &&
3168 		    vif->bss_conf.beacon_int < 16) {
3169 			IWL_ERR(mvm,
3170 				"AP %pM beacon interval is %d, refusing due to firmware bug!\n",
3171 				sta->addr, vif->bss_conf.beacon_int);
3172 			ret = -EINVAL;
3173 			goto out_unlock;
3174 		}
3175 
3176 		if (vif->type == NL80211_IFTYPE_STATION)
3177 			vif->bss_conf.he_support = sta->deflink.he_cap.has_he;
3178 
3179 		if (sta->tdls &&
3180 		    (vif->p2p ||
3181 		     iwl_mvm_tdls_sta_count(mvm, NULL) ==
3182 						IWL_MVM_TDLS_STA_COUNT ||
3183 		     iwl_mvm_phy_ctx_count(mvm) > 1)) {
3184 			IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
3185 			ret = -EBUSY;
3186 			goto out_unlock;
3187 		}
3188 
3189 		ret = iwl_mvm_add_sta(mvm, vif, sta);
3190 		if (sta->tdls && ret == 0) {
3191 			iwl_mvm_recalc_tdls_state(mvm, vif, true);
3192 			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3193 						   NL80211_TDLS_SETUP);
3194 		}
3195 
3196 		sta->deflink.agg.max_rc_amsdu_len = 1;
3197 	} else if (old_state == IEEE80211_STA_NONE &&
3198 		   new_state == IEEE80211_STA_AUTH) {
3199 		/*
3200 		 * EBS may be disabled due to previous failures reported by FW.
3201 		 * Reset EBS status here assuming environment has been changed.
3202 		 */
3203 		mvm->last_ebs_successful = true;
3204 		iwl_mvm_check_uapsd(mvm, vif, sta->addr);
3205 		ret = 0;
3206 	} else if (old_state == IEEE80211_STA_AUTH &&
3207 		   new_state == IEEE80211_STA_ASSOC) {
3208 		if (vif->type == NL80211_IFTYPE_AP) {
3209 			vif->bss_conf.he_support = sta->deflink.he_cap.has_he;
3210 			mvmvif->ap_assoc_sta_count++;
3211 			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3212 			if (vif->bss_conf.he_support &&
3213 			    !iwlwifi_mod_params.disable_11ax)
3214 				iwl_mvm_cfg_he_sta(mvm, vif, mvm_sta->sta_id);
3215 		} else if (vif->type == NL80211_IFTYPE_STATION) {
3216 			vif->bss_conf.he_support = sta->deflink.he_cap.has_he;
3217 
3218 			mvmvif->he_ru_2mhz_block = false;
3219 			if (sta->deflink.he_cap.has_he)
3220 				iwl_mvm_check_he_obss_narrow_bw_ru(hw, vif);
3221 
3222 			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3223 		}
3224 
3225 		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3226 				     false);
3227 		ret = iwl_mvm_update_sta(mvm, vif, sta);
3228 	} else if (old_state == IEEE80211_STA_ASSOC &&
3229 		   new_state == IEEE80211_STA_AUTHORIZED) {
3230 		ret = 0;
3231 
3232 		/* we don't support TDLS during DCM */
3233 		if (iwl_mvm_phy_ctx_count(mvm) > 1)
3234 			iwl_mvm_teardown_tdls_peers(mvm);
3235 
3236 		if (sta->tdls) {
3237 			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3238 						   NL80211_TDLS_ENABLE_LINK);
3239 		} else {
3240 			/* enable beacon filtering */
3241 			WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
3242 
3243 			mvmvif->authorized = 1;
3244 
3245 			/*
3246 			 * Now that the station is authorized, i.e., keys were already
3247 			 * installed, need to indicate to the FW that
3248 			 * multicast data frames can be forwarded to the driver
3249 			 */
3250 			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3251 			iwl_mvm_mei_host_associated(mvm, vif, mvm_sta);
3252 		}
3253 
3254 		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3255 				     true);
3256 	} else if (old_state == IEEE80211_STA_AUTHORIZED &&
3257 		   new_state == IEEE80211_STA_ASSOC) {
3258 		/* once we move into assoc state, need to update rate scale to
3259 		 * disable using wide bandwidth
3260 		 */
3261 		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3262 				     false);
3263 		if (!sta->tdls) {
3264 			/* Multicast data frames are no longer allowed */
3265 			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3266 
3267 			/*
3268 			 * Set this after the above iwl_mvm_mac_ctxt_changed()
3269 			 * to avoid sending high prio again for a little time.
3270 			 */
3271 			mvmvif->authorized = 0;
3272 
3273 			/* disable beacon filtering */
3274 			ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
3275 			WARN_ON(ret &&
3276 				!test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3277 					  &mvm->status));
3278 		}
3279 		ret = 0;
3280 	} else if (old_state == IEEE80211_STA_ASSOC &&
3281 		   new_state == IEEE80211_STA_AUTH) {
3282 		if (vif->type == NL80211_IFTYPE_AP) {
3283 			mvmvif->ap_assoc_sta_count--;
3284 			iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3285 		} else if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
3286 			iwl_mvm_stop_session_protection(mvm, vif);
3287 		ret = 0;
3288 	} else if (old_state == IEEE80211_STA_AUTH &&
3289 		   new_state == IEEE80211_STA_NONE) {
3290 		ret = 0;
3291 	} else if (old_state == IEEE80211_STA_NONE &&
3292 		   new_state == IEEE80211_STA_NOTEXIST) {
3293 		if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
3294 			iwl_mvm_stop_session_protection(mvm, vif);
3295 		ret = iwl_mvm_rm_sta(mvm, vif, sta);
3296 		if (sta->tdls) {
3297 			iwl_mvm_recalc_tdls_state(mvm, vif, false);
3298 			iwl_mvm_tdls_check_trigger(mvm, vif, sta->addr,
3299 						   NL80211_TDLS_DISABLE_LINK);
3300 		}
3301 
3302 		if (unlikely(ret &&
3303 			     test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED,
3304 				      &mvm->status)))
3305 			ret = 0;
3306 	} else {
3307 		ret = -EIO;
3308 	}
3309  out_unlock:
3310 	mutex_unlock(&mvm->mutex);
3311 
3312 	if (sta->tdls && ret == 0) {
3313 		if (old_state == IEEE80211_STA_NOTEXIST &&
3314 		    new_state == IEEE80211_STA_NONE)
3315 			ieee80211_reserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3316 		else if (old_state == IEEE80211_STA_NONE &&
3317 			 new_state == IEEE80211_STA_NOTEXIST)
3318 			ieee80211_unreserve_tid(sta, IWL_MVM_TDLS_FW_TID);
3319 	}
3320 
3321 	return ret;
3322 }
3323 
iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw * hw,u32 value)3324 static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3325 {
3326 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3327 
3328 	mvm->rts_threshold = value;
3329 
3330 	return 0;
3331 }
3332 
iwl_mvm_sta_rc_update(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,u32 changed)3333 static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
3334 				  struct ieee80211_vif *vif,
3335 				  struct ieee80211_sta *sta, u32 changed)
3336 {
3337 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3338 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3339 
3340 	if (changed & (IEEE80211_RC_BW_CHANGED |
3341 		       IEEE80211_RC_SUPP_RATES_CHANGED |
3342 		       IEEE80211_RC_NSS_CHANGED))
3343 		iwl_mvm_rs_rate_init(mvm, sta, mvmvif->phy_ctxt->channel->band,
3344 				     true);
3345 
3346 	if (vif->type == NL80211_IFTYPE_STATION &&
3347 	    changed & IEEE80211_RC_NSS_CHANGED)
3348 		iwl_mvm_sf_update(mvm, vif, false);
3349 }
3350 
iwl_mvm_mac_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,unsigned int link_id,u16 ac,const struct ieee80211_tx_queue_params * params)3351 static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
3352 			       struct ieee80211_vif *vif,
3353 			       unsigned int link_id, u16 ac,
3354 			       const struct ieee80211_tx_queue_params *params)
3355 {
3356 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3357 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3358 
3359 	mvmvif->queue_params[ac] = *params;
3360 
3361 	/*
3362 	 * No need to update right away, we'll get BSS_CHANGED_QOS
3363 	 * The exception is P2P_DEVICE interface which needs immediate update.
3364 	 */
3365 	if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
3366 		int ret;
3367 
3368 		mutex_lock(&mvm->mutex);
3369 		ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
3370 		mutex_unlock(&mvm->mutex);
3371 		return ret;
3372 	}
3373 	return 0;
3374 }
3375 
iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_prep_tx_info * info)3376 static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
3377 				       struct ieee80211_vif *vif,
3378 				       struct ieee80211_prep_tx_info *info)
3379 {
3380 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3381 
3382 	mutex_lock(&mvm->mutex);
3383 	iwl_mvm_protect_assoc(mvm, vif, info->duration);
3384 	mutex_unlock(&mvm->mutex);
3385 }
3386 
iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_prep_tx_info * info)3387 static void iwl_mvm_mac_mgd_complete_tx(struct ieee80211_hw *hw,
3388 					struct ieee80211_vif *vif,
3389 					struct ieee80211_prep_tx_info *info)
3390 {
3391 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3392 
3393 	/* for successful cases (auth/assoc), don't cancel session protection */
3394 	if (info->success)
3395 		return;
3396 
3397 	mutex_lock(&mvm->mutex);
3398 	iwl_mvm_stop_session_protection(mvm, vif);
3399 	mutex_unlock(&mvm->mutex);
3400 }
3401 
iwl_mvm_mac_sched_scan_start(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_sched_scan_request * req,struct ieee80211_scan_ies * ies)3402 static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
3403 					struct ieee80211_vif *vif,
3404 					struct cfg80211_sched_scan_request *req,
3405 					struct ieee80211_scan_ies *ies)
3406 {
3407 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3408 
3409 	int ret;
3410 
3411 	mutex_lock(&mvm->mutex);
3412 
3413 	if (!vif->cfg.idle) {
3414 		ret = -EBUSY;
3415 		goto out;
3416 	}
3417 
3418 	ret = iwl_mvm_sched_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_SCHED);
3419 
3420 out:
3421 	mutex_unlock(&mvm->mutex);
3422 	return ret;
3423 }
3424 
iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw * hw,struct ieee80211_vif * vif)3425 static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
3426 				       struct ieee80211_vif *vif)
3427 {
3428 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3429 	int ret;
3430 
3431 	mutex_lock(&mvm->mutex);
3432 
3433 	/* Due to a race condition, it's possible that mac80211 asks
3434 	 * us to stop a sched_scan when it's already stopped.  This
3435 	 * can happen, for instance, if we stopped the scan ourselves,
3436 	 * called ieee80211_sched_scan_stopped() and the userspace called
3437 	 * stop sched scan scan before ieee80211_sched_scan_stopped_work()
3438 	 * could run.  To handle this, simply return if the scan is
3439 	 * not running.
3440 	*/
3441 	if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) {
3442 		mutex_unlock(&mvm->mutex);
3443 		return 0;
3444 	}
3445 
3446 	ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, false);
3447 	mutex_unlock(&mvm->mutex);
3448 	iwl_mvm_wait_for_async_handlers(mvm);
3449 
3450 	return ret;
3451 }
3452 
__iwl_mvm_mac_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)3453 static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3454 				 enum set_key_cmd cmd,
3455 				 struct ieee80211_vif *vif,
3456 				 struct ieee80211_sta *sta,
3457 				 struct ieee80211_key_conf *key)
3458 {
3459 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3460 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3461 	struct iwl_mvm_sta *mvmsta = NULL;
3462 	struct iwl_mvm_key_pn *ptk_pn;
3463 	int keyidx = key->keyidx;
3464 	int ret, i;
3465 	u8 key_offset;
3466 
3467 	if (sta)
3468 		mvmsta = iwl_mvm_sta_from_mac80211(sta);
3469 
3470 	switch (key->cipher) {
3471 	case WLAN_CIPHER_SUITE_TKIP:
3472 		if (!mvm->trans->trans_cfg->gen2) {
3473 			key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
3474 			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3475 		} else if (vif->type == NL80211_IFTYPE_STATION) {
3476 			key->flags |= IEEE80211_KEY_FLAG_PUT_MIC_SPACE;
3477 		} else {
3478 			IWL_DEBUG_MAC80211(mvm, "Use SW encryption for TKIP\n");
3479 			return -EOPNOTSUPP;
3480 		}
3481 		break;
3482 	case WLAN_CIPHER_SUITE_CCMP:
3483 	case WLAN_CIPHER_SUITE_GCMP:
3484 	case WLAN_CIPHER_SUITE_GCMP_256:
3485 		if (!iwl_mvm_has_new_tx_api(mvm))
3486 			key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3487 		break;
3488 	case WLAN_CIPHER_SUITE_AES_CMAC:
3489 	case WLAN_CIPHER_SUITE_BIP_GMAC_128:
3490 	case WLAN_CIPHER_SUITE_BIP_GMAC_256:
3491 		WARN_ON_ONCE(!ieee80211_hw_check(hw, MFP_CAPABLE));
3492 		break;
3493 	case WLAN_CIPHER_SUITE_WEP40:
3494 	case WLAN_CIPHER_SUITE_WEP104:
3495 		if (vif->type == NL80211_IFTYPE_STATION)
3496 			break;
3497 		if (iwl_mvm_has_new_tx_api(mvm))
3498 			return -EOPNOTSUPP;
3499 		/* support HW crypto on TX */
3500 		return 0;
3501 	default:
3502 		return -EOPNOTSUPP;
3503 	}
3504 
3505 	switch (cmd) {
3506 	case SET_KEY:
3507 		if (keyidx == 6 || keyidx == 7)
3508 			rcu_assign_pointer(mvmvif->bcn_prot.keys[keyidx - 6],
3509 					   key);
3510 
3511 		if ((vif->type == NL80211_IFTYPE_ADHOC ||
3512 		     vif->type == NL80211_IFTYPE_AP) && !sta) {
3513 			/*
3514 			 * GTK on AP interface is a TX-only key, return 0;
3515 			 * on IBSS they're per-station and because we're lazy
3516 			 * we don't support them for RX, so do the same.
3517 			 * CMAC/GMAC in AP/IBSS modes must be done in software.
3518 			 */
3519 			if (key->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||
3520 			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||
3521 			    key->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {
3522 				ret = -EOPNOTSUPP;
3523 				break;
3524 			}
3525 
3526 			if (key->cipher != WLAN_CIPHER_SUITE_GCMP &&
3527 			    key->cipher != WLAN_CIPHER_SUITE_GCMP_256 &&
3528 			    !iwl_mvm_has_new_tx_api(mvm)) {
3529 				key->hw_key_idx = STA_KEY_IDX_INVALID;
3530 				ret = 0;
3531 				break;
3532 			}
3533 
3534 			if (!mvmvif->ap_ibss_active) {
3535 				for (i = 0;
3536 				     i < ARRAY_SIZE(mvmvif->ap_early_keys);
3537 				     i++) {
3538 					if (!mvmvif->ap_early_keys[i]) {
3539 						mvmvif->ap_early_keys[i] = key;
3540 						break;
3541 					}
3542 				}
3543 
3544 				if (i >= ARRAY_SIZE(mvmvif->ap_early_keys))
3545 					ret = -ENOSPC;
3546 				else
3547 					ret = 0;
3548 
3549 				break;
3550 			}
3551 		}
3552 
3553 		/* During FW restart, in order to restore the state as it was,
3554 		 * don't try to reprogram keys we previously failed for.
3555 		 */
3556 		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3557 		    key->hw_key_idx == STA_KEY_IDX_INVALID) {
3558 			IWL_DEBUG_MAC80211(mvm,
3559 					   "skip invalid idx key programming during restart\n");
3560 			ret = 0;
3561 			break;
3562 		}
3563 
3564 		if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
3565 		    mvmsta && iwl_mvm_has_new_rx_api(mvm) &&
3566 		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3567 		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3568 		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3569 		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3570 			struct ieee80211_key_seq seq;
3571 			int tid, q;
3572 
3573 			WARN_ON(rcu_access_pointer(mvmsta->ptk_pn[keyidx]));
3574 			ptk_pn = kzalloc(struct_size(ptk_pn, q,
3575 						     mvm->trans->num_rx_queues),
3576 					 GFP_KERNEL);
3577 			if (!ptk_pn) {
3578 				ret = -ENOMEM;
3579 				break;
3580 			}
3581 
3582 			for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
3583 				ieee80211_get_key_rx_seq(key, tid, &seq);
3584 				for (q = 0; q < mvm->trans->num_rx_queues; q++)
3585 					memcpy(ptk_pn->q[q].pn[tid],
3586 					       seq.ccmp.pn,
3587 					       IEEE80211_CCMP_PN_LEN);
3588 			}
3589 
3590 			rcu_assign_pointer(mvmsta->ptk_pn[keyidx], ptk_pn);
3591 		}
3592 
3593 		/* in HW restart reuse the index, otherwise request a new one */
3594 		if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
3595 			key_offset = key->hw_key_idx;
3596 		else
3597 			key_offset = STA_KEY_IDX_INVALID;
3598 
3599 		if (mvmsta && key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3600 			mvmsta->pairwise_cipher = key->cipher;
3601 
3602 		IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
3603 		ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, key_offset);
3604 		if (ret) {
3605 			IWL_WARN(mvm, "set key failed\n");
3606 			key->hw_key_idx = STA_KEY_IDX_INVALID;
3607 			/*
3608 			 * can't add key for RX, but we don't need it
3609 			 * in the device for TX so still return 0,
3610 			 * unless we have new TX API where we cannot
3611 			 * put key material into the TX_CMD
3612 			 */
3613 			if (iwl_mvm_has_new_tx_api(mvm))
3614 				ret = -EOPNOTSUPP;
3615 			else
3616 				ret = 0;
3617 		}
3618 
3619 		break;
3620 	case DISABLE_KEY:
3621 		if (keyidx == 6 || keyidx == 7)
3622 			RCU_INIT_POINTER(mvmvif->bcn_prot.keys[keyidx - 6],
3623 					 NULL);
3624 
3625 		ret = -ENOENT;
3626 		for (i = 0; i < ARRAY_SIZE(mvmvif->ap_early_keys); i++) {
3627 			if (mvmvif->ap_early_keys[i] == key) {
3628 				mvmvif->ap_early_keys[i] = NULL;
3629 				ret = 0;
3630 			}
3631 		}
3632 
3633 		/* found in pending list - don't do anything else */
3634 		if (ret == 0)
3635 			break;
3636 
3637 		if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
3638 			ret = 0;
3639 			break;
3640 		}
3641 
3642 		if (mvmsta && iwl_mvm_has_new_rx_api(mvm) &&
3643 		    key->flags & IEEE80211_KEY_FLAG_PAIRWISE &&
3644 		    (key->cipher == WLAN_CIPHER_SUITE_CCMP ||
3645 		     key->cipher == WLAN_CIPHER_SUITE_GCMP ||
3646 		     key->cipher == WLAN_CIPHER_SUITE_GCMP_256)) {
3647 			ptk_pn = rcu_dereference_protected(
3648 						mvmsta->ptk_pn[keyidx],
3649 						lockdep_is_held(&mvm->mutex));
3650 			RCU_INIT_POINTER(mvmsta->ptk_pn[keyidx], NULL);
3651 			if (ptk_pn)
3652 				kfree_rcu(ptk_pn, rcu_head);
3653 		}
3654 
3655 		IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
3656 		ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
3657 		break;
3658 	default:
3659 		ret = -EINVAL;
3660 	}
3661 
3662 	return ret;
3663 }
3664 
iwl_mvm_mac_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)3665 static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
3666 			       enum set_key_cmd cmd,
3667 			       struct ieee80211_vif *vif,
3668 			       struct ieee80211_sta *sta,
3669 			       struct ieee80211_key_conf *key)
3670 {
3671 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3672 	int ret;
3673 
3674 	mutex_lock(&mvm->mutex);
3675 	ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
3676 	mutex_unlock(&mvm->mutex);
3677 
3678 	return ret;
3679 }
3680 
iwl_mvm_mac_update_tkip_key(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_key_conf * keyconf,struct ieee80211_sta * sta,u32 iv32,u16 * phase1key)3681 static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
3682 					struct ieee80211_vif *vif,
3683 					struct ieee80211_key_conf *keyconf,
3684 					struct ieee80211_sta *sta,
3685 					u32 iv32, u16 *phase1key)
3686 {
3687 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3688 
3689 	if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
3690 		return;
3691 
3692 	iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
3693 }
3694 
3695 
iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data * notif_wait,struct iwl_rx_packet * pkt,void * data)3696 static bool iwl_mvm_rx_aux_roc(struct iwl_notif_wait_data *notif_wait,
3697 			       struct iwl_rx_packet *pkt, void *data)
3698 {
3699 	struct iwl_mvm *mvm =
3700 		container_of(notif_wait, struct iwl_mvm, notif_wait);
3701 	struct iwl_hs20_roc_res *resp;
3702 	int resp_len = iwl_rx_packet_payload_len(pkt);
3703 	struct iwl_mvm_time_event_data *te_data = data;
3704 
3705 	if (WARN_ON(pkt->hdr.cmd != HOT_SPOT_CMD))
3706 		return true;
3707 
3708 	if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
3709 		IWL_ERR(mvm, "Invalid HOT_SPOT_CMD response\n");
3710 		return true;
3711 	}
3712 
3713 	resp = (void *)pkt->data;
3714 
3715 	IWL_DEBUG_TE(mvm,
3716 		     "Aux ROC: Received response from ucode: status=%d uid=%d\n",
3717 		     resp->status, resp->event_unique_id);
3718 
3719 	te_data->uid = le32_to_cpu(resp->event_unique_id);
3720 	IWL_DEBUG_TE(mvm, "TIME_EVENT_CMD response - UID = 0x%x\n",
3721 		     te_data->uid);
3722 
3723 	spin_lock_bh(&mvm->time_event_lock);
3724 	list_add_tail(&te_data->list, &mvm->aux_roc_te_list);
3725 	spin_unlock_bh(&mvm->time_event_lock);
3726 
3727 	return true;
3728 }
3729 
3730 #define AUX_ROC_MIN_DURATION MSEC_TO_TU(100)
3731 #define AUX_ROC_MIN_DELAY MSEC_TO_TU(200)
3732 #define AUX_ROC_MAX_DELAY MSEC_TO_TU(600)
3733 #define AUX_ROC_SAFETY_BUFFER MSEC_TO_TU(20)
3734 #define AUX_ROC_MIN_SAFETY_BUFFER MSEC_TO_TU(10)
iwl_mvm_send_aux_roc_cmd(struct iwl_mvm * mvm,struct ieee80211_channel * channel,struct ieee80211_vif * vif,int duration)3735 static int iwl_mvm_send_aux_roc_cmd(struct iwl_mvm *mvm,
3736 				    struct ieee80211_channel *channel,
3737 				    struct ieee80211_vif *vif,
3738 				    int duration)
3739 {
3740 	int res;
3741 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3742 	struct iwl_mvm_time_event_data *te_data = &mvmvif->hs_time_event_data;
3743 	static const u16 time_event_response[] = { HOT_SPOT_CMD };
3744 	struct iwl_notification_wait wait_time_event;
3745 	u32 dtim_interval = vif->bss_conf.dtim_period *
3746 		vif->bss_conf.beacon_int;
3747 	u32 req_dur, delay;
3748 	struct iwl_hs20_roc_req aux_roc_req = {
3749 		.action = cpu_to_le32(FW_CTXT_ACTION_ADD),
3750 		.id_and_color =
3751 			cpu_to_le32(FW_CMD_ID_AND_COLOR(MAC_INDEX_AUX, 0)),
3752 		.sta_id_and_color = cpu_to_le32(mvm->aux_sta.sta_id),
3753 	};
3754 	struct iwl_hs20_roc_req_tail *tail = iwl_mvm_chan_info_cmd_tail(mvm,
3755 		&aux_roc_req.channel_info);
3756 	u16 len = sizeof(aux_roc_req) - iwl_mvm_chan_info_padding(mvm);
3757 
3758 	/* Set the channel info data */
3759 	iwl_mvm_set_chan_info(mvm, &aux_roc_req.channel_info, channel->hw_value,
3760 			      iwl_mvm_phy_band_from_nl80211(channel->band),
3761 			      PHY_VHT_CHANNEL_MODE20,
3762 			      0);
3763 
3764 	/* Set the time and duration */
3765 	tail->apply_time = cpu_to_le32(iwl_mvm_get_systime(mvm));
3766 
3767 	delay = AUX_ROC_MIN_DELAY;
3768 	req_dur = MSEC_TO_TU(duration);
3769 
3770 	/*
3771 	 * If we are associated we want the delay time to be at least one
3772 	 * dtim interval so that the FW can wait until after the DTIM and
3773 	 * then start the time event, this will potentially allow us to
3774 	 * remain off-channel for the max duration.
3775 	 * Since we want to use almost a whole dtim interval we would also
3776 	 * like the delay to be for 2-3 dtim intervals, in case there are
3777 	 * other time events with higher priority.
3778 	 */
3779 	if (vif->cfg.assoc) {
3780 		delay = min_t(u32, dtim_interval * 3, AUX_ROC_MAX_DELAY);
3781 		/* We cannot remain off-channel longer than the DTIM interval */
3782 		if (dtim_interval <= req_dur) {
3783 			req_dur = dtim_interval - AUX_ROC_SAFETY_BUFFER;
3784 			if (req_dur <= AUX_ROC_MIN_DURATION)
3785 				req_dur = dtim_interval -
3786 					AUX_ROC_MIN_SAFETY_BUFFER;
3787 		}
3788 	}
3789 
3790 	tail->duration = cpu_to_le32(req_dur);
3791 	tail->apply_time_max_delay = cpu_to_le32(delay);
3792 
3793 	IWL_DEBUG_TE(mvm,
3794 		     "ROC: Requesting to remain on channel %u for %ums\n",
3795 		     channel->hw_value, req_dur);
3796 	IWL_DEBUG_TE(mvm,
3797 		     "\t(requested = %ums, max_delay = %ums, dtim_interval = %ums)\n",
3798 		     duration, delay, dtim_interval);
3799 
3800 	/* Set the node address */
3801 	memcpy(tail->node_addr, vif->addr, ETH_ALEN);
3802 
3803 	lockdep_assert_held(&mvm->mutex);
3804 
3805 	spin_lock_bh(&mvm->time_event_lock);
3806 
3807 	if (WARN_ON(te_data->id == HOT_SPOT_CMD)) {
3808 		spin_unlock_bh(&mvm->time_event_lock);
3809 		return -EIO;
3810 	}
3811 
3812 	te_data->vif = vif;
3813 	te_data->duration = duration;
3814 	te_data->id = HOT_SPOT_CMD;
3815 
3816 	spin_unlock_bh(&mvm->time_event_lock);
3817 
3818 	/*
3819 	 * Use a notification wait, which really just processes the
3820 	 * command response and doesn't wait for anything, in order
3821 	 * to be able to process the response and get the UID inside
3822 	 * the RX path. Using CMD_WANT_SKB doesn't work because it
3823 	 * stores the buffer and then wakes up this thread, by which
3824 	 * time another notification (that the time event started)
3825 	 * might already be processed unsuccessfully.
3826 	 */
3827 	iwl_init_notification_wait(&mvm->notif_wait, &wait_time_event,
3828 				   time_event_response,
3829 				   ARRAY_SIZE(time_event_response),
3830 				   iwl_mvm_rx_aux_roc, te_data);
3831 
3832 	res = iwl_mvm_send_cmd_pdu(mvm, HOT_SPOT_CMD, 0, len,
3833 				   &aux_roc_req);
3834 
3835 	if (res) {
3836 		IWL_ERR(mvm, "Couldn't send HOT_SPOT_CMD: %d\n", res);
3837 		iwl_remove_notification(&mvm->notif_wait, &wait_time_event);
3838 		goto out_clear_te;
3839 	}
3840 
3841 	/* No need to wait for anything, so just pass 1 (0 isn't valid) */
3842 	res = iwl_wait_notification(&mvm->notif_wait, &wait_time_event, 1);
3843 	/* should never fail */
3844 	WARN_ON_ONCE(res);
3845 
3846 	if (res) {
3847  out_clear_te:
3848 		spin_lock_bh(&mvm->time_event_lock);
3849 		iwl_mvm_te_clear_data(mvm, te_data);
3850 		spin_unlock_bh(&mvm->time_event_lock);
3851 	}
3852 
3853 	return res;
3854 }
3855 
iwl_mvm_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel * channel,int duration,enum ieee80211_roc_type type)3856 static int iwl_mvm_roc(struct ieee80211_hw *hw,
3857 		       struct ieee80211_vif *vif,
3858 		       struct ieee80211_channel *channel,
3859 		       int duration,
3860 		       enum ieee80211_roc_type type)
3861 {
3862 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3863 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
3864 	struct cfg80211_chan_def chandef;
3865 	struct iwl_mvm_phy_ctxt *phy_ctxt;
3866 	bool band_change_removal;
3867 	int ret, i;
3868 
3869 	IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
3870 			   duration, type);
3871 
3872 	/*
3873 	 * Flush the done work, just in case it's still pending, so that
3874 	 * the work it does can complete and we can accept new frames.
3875 	 */
3876 	flush_work(&mvm->roc_done_wk);
3877 
3878 	mutex_lock(&mvm->mutex);
3879 
3880 	switch (vif->type) {
3881 	case NL80211_IFTYPE_STATION:
3882 		if (fw_has_capa(&mvm->fw->ucode_capa,
3883 				IWL_UCODE_TLV_CAPA_HOTSPOT_SUPPORT)) {
3884 			/* Use aux roc framework (HS20) */
3885 			if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12) {
3886 				u32 lmac_id;
3887 
3888 				lmac_id = iwl_mvm_get_lmac_id(mvm->fw,
3889 							      channel->band);
3890 				ret = iwl_mvm_add_aux_sta(mvm, lmac_id);
3891 				if (WARN(ret,
3892 					 "Failed to allocate aux station"))
3893 					goto out_unlock;
3894 			}
3895 			ret = iwl_mvm_send_aux_roc_cmd(mvm, channel,
3896 						       vif, duration);
3897 			goto out_unlock;
3898 		}
3899 		IWL_ERR(mvm, "hotspot not supported\n");
3900 		ret = -EINVAL;
3901 		goto out_unlock;
3902 	case NL80211_IFTYPE_P2P_DEVICE:
3903 		/* handle below */
3904 		break;
3905 	default:
3906 		IWL_ERR(mvm, "vif isn't P2P_DEVICE: %d\n", vif->type);
3907 		ret = -EINVAL;
3908 		goto out_unlock;
3909 	}
3910 
3911 	for (i = 0; i < NUM_PHY_CTX; i++) {
3912 		phy_ctxt = &mvm->phy_ctxts[i];
3913 		if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
3914 			continue;
3915 
3916 		if (phy_ctxt->ref && channel == phy_ctxt->channel) {
3917 			/*
3918 			 * Unbind the P2P_DEVICE from the current PHY context,
3919 			 * and if the PHY context is not used remove it.
3920 			 */
3921 			ret = iwl_mvm_binding_remove_vif(mvm, vif);
3922 			if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3923 				goto out_unlock;
3924 
3925 			iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3926 
3927 			/* Bind the P2P_DEVICE to the current PHY Context */
3928 			mvmvif->phy_ctxt = phy_ctxt;
3929 
3930 			ret = iwl_mvm_binding_add_vif(mvm, vif);
3931 			if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3932 				goto out_unlock;
3933 
3934 			iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3935 			goto schedule_time_event;
3936 		}
3937 	}
3938 
3939 	/* Need to update the PHY context only if the ROC channel changed */
3940 	if (channel == mvmvif->phy_ctxt->channel)
3941 		goto schedule_time_event;
3942 
3943 	cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
3944 
3945 	/*
3946 	 * Check if the remain-on-channel is on a different band and that
3947 	 * requires context removal, see iwl_mvm_phy_ctxt_changed(). If
3948 	 * so, we'll need to release and then re-configure here, since we
3949 	 * must not remove a PHY context that's part of a binding.
3950 	 */
3951 	band_change_removal =
3952 		fw_has_capa(&mvm->fw->ucode_capa,
3953 			    IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT) &&
3954 		mvmvif->phy_ctxt->channel->band != chandef.chan->band;
3955 
3956 	if (mvmvif->phy_ctxt->ref == 1 && !band_change_removal) {
3957 		/*
3958 		 * Change the PHY context configuration as it is currently
3959 		 * referenced only by the P2P Device MAC (and we can modify it)
3960 		 */
3961 		ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
3962 					       &chandef, 1, 1);
3963 		if (ret)
3964 			goto out_unlock;
3965 	} else {
3966 		/*
3967 		 * The PHY context is shared with other MACs (or we're trying to
3968 		 * switch bands), so remove the P2P Device from the binding,
3969 		 * allocate an new PHY context and create a new binding.
3970 		 */
3971 		phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
3972 		if (!phy_ctxt) {
3973 			ret = -ENOSPC;
3974 			goto out_unlock;
3975 		}
3976 
3977 		ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
3978 					       1, 1);
3979 		if (ret) {
3980 			IWL_ERR(mvm, "Failed to change PHY context\n");
3981 			goto out_unlock;
3982 		}
3983 
3984 		/* Unbind the P2P_DEVICE from the current PHY context */
3985 		ret = iwl_mvm_binding_remove_vif(mvm, vif);
3986 		if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
3987 			goto out_unlock;
3988 
3989 		iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
3990 
3991 		/* Bind the P2P_DEVICE to the new allocated PHY context */
3992 		mvmvif->phy_ctxt = phy_ctxt;
3993 
3994 		ret = iwl_mvm_binding_add_vif(mvm, vif);
3995 		if (WARN(ret, "Failed binding P2P_DEVICE\n"))
3996 			goto out_unlock;
3997 
3998 		iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
3999 	}
4000 
4001 schedule_time_event:
4002 	/* Schedule the time events */
4003 	ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
4004 
4005 out_unlock:
4006 	mutex_unlock(&mvm->mutex);
4007 	IWL_DEBUG_MAC80211(mvm, "leave\n");
4008 	return ret;
4009 }
4010 
iwl_mvm_cancel_roc(struct ieee80211_hw * hw,struct ieee80211_vif * vif)4011 static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw,
4012 			      struct ieee80211_vif *vif)
4013 {
4014 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4015 
4016 	IWL_DEBUG_MAC80211(mvm, "enter\n");
4017 
4018 	mutex_lock(&mvm->mutex);
4019 	iwl_mvm_stop_roc(mvm, vif);
4020 	mutex_unlock(&mvm->mutex);
4021 
4022 	IWL_DEBUG_MAC80211(mvm, "leave\n");
4023 	return 0;
4024 }
4025 
4026 struct iwl_mvm_ftm_responder_iter_data {
4027 	bool responder;
4028 	struct ieee80211_chanctx_conf *ctx;
4029 };
4030 
iwl_mvm_ftm_responder_chanctx_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)4031 static void iwl_mvm_ftm_responder_chanctx_iter(void *_data, u8 *mac,
4032 					       struct ieee80211_vif *vif)
4033 {
4034 	struct iwl_mvm_ftm_responder_iter_data *data = _data;
4035 
4036 	if (rcu_access_pointer(vif->bss_conf.chanctx_conf) == data->ctx &&
4037 	    vif->type == NL80211_IFTYPE_AP && vif->bss_conf.ftmr_params)
4038 		data->responder = true;
4039 }
4040 
iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4041 static bool iwl_mvm_is_ftm_responder_chanctx(struct iwl_mvm *mvm,
4042 					     struct ieee80211_chanctx_conf *ctx)
4043 {
4044 	struct iwl_mvm_ftm_responder_iter_data data = {
4045 		.responder = false,
4046 		.ctx = ctx,
4047 	};
4048 
4049 	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
4050 					IEEE80211_IFACE_ITER_NORMAL,
4051 					iwl_mvm_ftm_responder_chanctx_iter,
4052 					&data);
4053 	return data.responder;
4054 }
4055 
__iwl_mvm_add_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4056 static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
4057 				 struct ieee80211_chanctx_conf *ctx)
4058 {
4059 	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4060 	struct iwl_mvm_phy_ctxt *phy_ctxt;
4061 	bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4062 	struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4063 	int ret;
4064 
4065 	lockdep_assert_held(&mvm->mutex);
4066 
4067 	IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
4068 
4069 	phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
4070 	if (!phy_ctxt) {
4071 		ret = -ENOSPC;
4072 		goto out;
4073 	}
4074 
4075 	ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4076 				       ctx->rx_chains_static,
4077 				       ctx->rx_chains_dynamic);
4078 	if (ret) {
4079 		IWL_ERR(mvm, "Failed to add PHY context\n");
4080 		goto out;
4081 	}
4082 
4083 	iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
4084 	*phy_ctxt_id = phy_ctxt->id;
4085 out:
4086 	return ret;
4087 }
4088 
iwl_mvm_add_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)4089 static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
4090 			       struct ieee80211_chanctx_conf *ctx)
4091 {
4092 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4093 	int ret;
4094 
4095 	mutex_lock(&mvm->mutex);
4096 	ret = __iwl_mvm_add_chanctx(mvm, ctx);
4097 	mutex_unlock(&mvm->mutex);
4098 
4099 	return ret;
4100 }
4101 
__iwl_mvm_remove_chanctx(struct iwl_mvm * mvm,struct ieee80211_chanctx_conf * ctx)4102 static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
4103 				     struct ieee80211_chanctx_conf *ctx)
4104 {
4105 	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4106 	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4107 
4108 	lockdep_assert_held(&mvm->mutex);
4109 
4110 	iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
4111 }
4112 
iwl_mvm_remove_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx)4113 static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
4114 				   struct ieee80211_chanctx_conf *ctx)
4115 {
4116 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4117 
4118 	mutex_lock(&mvm->mutex);
4119 	__iwl_mvm_remove_chanctx(mvm, ctx);
4120 	mutex_unlock(&mvm->mutex);
4121 }
4122 
iwl_mvm_change_chanctx(struct ieee80211_hw * hw,struct ieee80211_chanctx_conf * ctx,u32 changed)4123 static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
4124 				   struct ieee80211_chanctx_conf *ctx,
4125 				   u32 changed)
4126 {
4127 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4128 	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4129 	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4130 	bool responder = iwl_mvm_is_ftm_responder_chanctx(mvm, ctx);
4131 	struct cfg80211_chan_def *def = responder ? &ctx->def : &ctx->min_def;
4132 
4133 	if (WARN_ONCE((phy_ctxt->ref > 1) &&
4134 		      (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
4135 				   IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
4136 				   IEEE80211_CHANCTX_CHANGE_RADAR |
4137 				   IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
4138 		      "Cannot change PHY. Ref=%d, changed=0x%X\n",
4139 		      phy_ctxt->ref, changed))
4140 		return;
4141 
4142 	mutex_lock(&mvm->mutex);
4143 
4144 	/* we are only changing the min_width, may be a noop */
4145 	if (changed == IEEE80211_CHANCTX_CHANGE_MIN_WIDTH) {
4146 		if (phy_ctxt->width == def->width)
4147 			goto out_unlock;
4148 
4149 		/* we are just toggling between 20_NOHT and 20 */
4150 		if (phy_ctxt->width <= NL80211_CHAN_WIDTH_20 &&
4151 		    def->width <= NL80211_CHAN_WIDTH_20)
4152 			goto out_unlock;
4153 	}
4154 
4155 	iwl_mvm_bt_coex_vif_change(mvm);
4156 	iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, def,
4157 				 ctx->rx_chains_static,
4158 				 ctx->rx_chains_dynamic);
4159 
4160 out_unlock:
4161 	mutex_unlock(&mvm->mutex);
4162 }
4163 
__iwl_mvm_assign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)4164 static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
4165 					struct ieee80211_vif *vif,
4166 					struct ieee80211_chanctx_conf *ctx,
4167 					bool switching_chanctx)
4168 {
4169 	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
4170 	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
4171 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4172 	int ret;
4173 
4174 	lockdep_assert_held(&mvm->mutex);
4175 
4176 	mvmvif->phy_ctxt = phy_ctxt;
4177 
4178 	switch (vif->type) {
4179 	case NL80211_IFTYPE_AP:
4180 		/* only needed if we're switching chanctx (i.e. during CSA) */
4181 		if (switching_chanctx) {
4182 			mvmvif->ap_ibss_active = true;
4183 			break;
4184 		}
4185 		fallthrough;
4186 	case NL80211_IFTYPE_ADHOC:
4187 		/*
4188 		 * The AP binding flow is handled as part of the start_ap flow
4189 		 * (in bss_info_changed), similarly for IBSS.
4190 		 */
4191 		ret = 0;
4192 		goto out;
4193 	case NL80211_IFTYPE_STATION:
4194 		mvmvif->csa_bcn_pending = false;
4195 		break;
4196 	case NL80211_IFTYPE_MONITOR:
4197 		/* always disable PS when a monitor interface is active */
4198 		mvmvif->ps_disabled = true;
4199 		break;
4200 	default:
4201 		ret = -EINVAL;
4202 		goto out;
4203 	}
4204 
4205 	ret = iwl_mvm_binding_add_vif(mvm, vif);
4206 	if (ret)
4207 		goto out;
4208 
4209 	/*
4210 	 * Power state must be updated before quotas,
4211 	 * otherwise fw will complain.
4212 	 */
4213 	iwl_mvm_power_update_mac(mvm);
4214 
4215 	/* Setting the quota at this stage is only required for monitor
4216 	 * interfaces. For the other types, the bss_info changed flow
4217 	 * will handle quota settings.
4218 	 */
4219 	if (vif->type == NL80211_IFTYPE_MONITOR) {
4220 		mvmvif->monitor_active = true;
4221 		ret = iwl_mvm_update_quotas(mvm, false, NULL);
4222 		if (ret)
4223 			goto out_remove_binding;
4224 
4225 		ret = iwl_mvm_add_snif_sta(mvm, vif);
4226 		if (ret)
4227 			goto out_remove_binding;
4228 
4229 	}
4230 
4231 	/* Handle binding during CSA */
4232 	if (vif->type == NL80211_IFTYPE_AP) {
4233 		iwl_mvm_update_quotas(mvm, false, NULL);
4234 		iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
4235 	}
4236 
4237 	if (switching_chanctx && vif->type == NL80211_IFTYPE_STATION) {
4238 		mvmvif->csa_bcn_pending = true;
4239 
4240 		if (!fw_has_capa(&mvm->fw->ucode_capa,
4241 				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4242 			u32 duration = 3 * vif->bss_conf.beacon_int;
4243 
4244 			/* Protect the session to make sure we hear the first
4245 			 * beacon on the new channel.
4246 			 */
4247 			iwl_mvm_protect_session(mvm, vif, duration, duration,
4248 						vif->bss_conf.beacon_int / 2,
4249 						true);
4250 		}
4251 
4252 		iwl_mvm_update_quotas(mvm, false, NULL);
4253 	}
4254 
4255 	goto out;
4256 
4257 out_remove_binding:
4258 	iwl_mvm_binding_remove_vif(mvm, vif);
4259 	iwl_mvm_power_update_mac(mvm);
4260 out:
4261 	if (ret)
4262 		mvmvif->phy_ctxt = NULL;
4263 	return ret;
4264 }
iwl_mvm_assign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct ieee80211_chanctx_conf * ctx)4265 static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
4266 				      struct ieee80211_vif *vif,
4267 				      struct ieee80211_bss_conf *link_conf,
4268 				      struct ieee80211_chanctx_conf *ctx)
4269 {
4270 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4271 	int ret;
4272 
4273 	mutex_lock(&mvm->mutex);
4274 	ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
4275 	mutex_unlock(&mvm->mutex);
4276 
4277 	return ret;
4278 }
4279 
__iwl_mvm_unassign_vif_chanctx(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_chanctx_conf * ctx,bool switching_chanctx)4280 static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
4281 					   struct ieee80211_vif *vif,
4282 					   struct ieee80211_chanctx_conf *ctx,
4283 					   bool switching_chanctx)
4284 {
4285 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4286 	struct ieee80211_vif *disabled_vif = NULL;
4287 
4288 	lockdep_assert_held(&mvm->mutex);
4289 	iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
4290 
4291 	switch (vif->type) {
4292 	case NL80211_IFTYPE_ADHOC:
4293 		goto out;
4294 	case NL80211_IFTYPE_MONITOR:
4295 		mvmvif->monitor_active = false;
4296 		mvmvif->ps_disabled = false;
4297 		iwl_mvm_rm_snif_sta(mvm, vif);
4298 		break;
4299 	case NL80211_IFTYPE_AP:
4300 		/* This part is triggered only during CSA */
4301 		if (!switching_chanctx || !mvmvif->ap_ibss_active)
4302 			goto out;
4303 
4304 		mvmvif->csa_countdown = false;
4305 
4306 		/* Set CS bit on all the stations */
4307 		iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
4308 
4309 		/* Save blocked iface, the timeout is set on the next beacon */
4310 		rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
4311 
4312 		mvmvif->ap_ibss_active = false;
4313 		break;
4314 	case NL80211_IFTYPE_STATION:
4315 		if (!switching_chanctx)
4316 			break;
4317 
4318 		disabled_vif = vif;
4319 
4320 		if (!fw_has_capa(&mvm->fw->ucode_capa,
4321 				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD))
4322 			iwl_mvm_mac_ctxt_changed(mvm, vif, true, NULL);
4323 		break;
4324 	default:
4325 		break;
4326 	}
4327 
4328 	iwl_mvm_update_quotas(mvm, false, disabled_vif);
4329 	iwl_mvm_binding_remove_vif(mvm, vif);
4330 
4331 out:
4332 	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD) &&
4333 	    switching_chanctx)
4334 		return;
4335 	mvmvif->phy_ctxt = NULL;
4336 	iwl_mvm_power_update_mac(mvm);
4337 }
4338 
iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * link_conf,struct ieee80211_chanctx_conf * ctx)4339 static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
4340 					 struct ieee80211_vif *vif,
4341 					 struct ieee80211_bss_conf *link_conf,
4342 					 struct ieee80211_chanctx_conf *ctx)
4343 {
4344 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4345 
4346 	mutex_lock(&mvm->mutex);
4347 	__iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
4348 	mutex_unlock(&mvm->mutex);
4349 }
4350 
4351 static int
iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)4352 iwl_mvm_switch_vif_chanctx_swap(struct iwl_mvm *mvm,
4353 				struct ieee80211_vif_chanctx_switch *vifs)
4354 {
4355 	int ret;
4356 
4357 	mutex_lock(&mvm->mutex);
4358 	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4359 	__iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
4360 
4361 	ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
4362 	if (ret) {
4363 		IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
4364 		goto out_reassign;
4365 	}
4366 
4367 	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4368 					   true);
4369 	if (ret) {
4370 		IWL_ERR(mvm,
4371 			"failed to assign new_ctx during channel switch\n");
4372 		goto out_remove;
4373 	}
4374 
4375 	/* we don't support TDLS during DCM - can be caused by channel switch */
4376 	if (iwl_mvm_phy_ctx_count(mvm) > 1)
4377 		iwl_mvm_teardown_tdls_peers(mvm);
4378 
4379 	goto out;
4380 
4381 out_remove:
4382 	__iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
4383 
4384 out_reassign:
4385 	if (__iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx)) {
4386 		IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
4387 		goto out_restart;
4388 	}
4389 
4390 	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4391 					 true)) {
4392 		IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4393 		goto out_restart;
4394 	}
4395 
4396 	goto out;
4397 
4398 out_restart:
4399 	/* things keep failing, better restart the hw */
4400 	iwl_mvm_nic_restart(mvm, false);
4401 
4402 out:
4403 	mutex_unlock(&mvm->mutex);
4404 
4405 	return ret;
4406 }
4407 
4408 static int
iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm * mvm,struct ieee80211_vif_chanctx_switch * vifs)4409 iwl_mvm_switch_vif_chanctx_reassign(struct iwl_mvm *mvm,
4410 				    struct ieee80211_vif_chanctx_switch *vifs)
4411 {
4412 	int ret;
4413 
4414 	mutex_lock(&mvm->mutex);
4415 	__iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
4416 
4417 	ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
4418 					   true);
4419 	if (ret) {
4420 		IWL_ERR(mvm,
4421 			"failed to assign new_ctx during channel switch\n");
4422 		goto out_reassign;
4423 	}
4424 
4425 	goto out;
4426 
4427 out_reassign:
4428 	if (__iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
4429 					 true)) {
4430 		IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
4431 		goto out_restart;
4432 	}
4433 
4434 	goto out;
4435 
4436 out_restart:
4437 	/* things keep failing, better restart the hw */
4438 	iwl_mvm_nic_restart(mvm, false);
4439 
4440 out:
4441 	mutex_unlock(&mvm->mutex);
4442 
4443 	return ret;
4444 }
4445 
iwl_mvm_switch_vif_chanctx(struct ieee80211_hw * hw,struct ieee80211_vif_chanctx_switch * vifs,int n_vifs,enum ieee80211_chanctx_switch_mode mode)4446 static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
4447 				      struct ieee80211_vif_chanctx_switch *vifs,
4448 				      int n_vifs,
4449 				      enum ieee80211_chanctx_switch_mode mode)
4450 {
4451 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4452 	int ret;
4453 
4454 	/* we only support a single-vif right now */
4455 	if (n_vifs > 1)
4456 		return -EOPNOTSUPP;
4457 
4458 	switch (mode) {
4459 	case CHANCTX_SWMODE_SWAP_CONTEXTS:
4460 		ret = iwl_mvm_switch_vif_chanctx_swap(mvm, vifs);
4461 		break;
4462 	case CHANCTX_SWMODE_REASSIGN_VIF:
4463 		ret = iwl_mvm_switch_vif_chanctx_reassign(mvm, vifs);
4464 		break;
4465 	default:
4466 		ret = -EOPNOTSUPP;
4467 		break;
4468 	}
4469 
4470 	return ret;
4471 }
4472 
iwl_mvm_tx_last_beacon(struct ieee80211_hw * hw)4473 static int iwl_mvm_tx_last_beacon(struct ieee80211_hw *hw)
4474 {
4475 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4476 
4477 	return mvm->ibss_manager;
4478 }
4479 
iwl_mvm_set_tim(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool set)4480 static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
4481 			   struct ieee80211_sta *sta,
4482 			   bool set)
4483 {
4484 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4485 	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
4486 
4487 	if (!mvm_sta || !mvm_sta->vif) {
4488 		IWL_ERR(mvm, "Station is not associated to a vif\n");
4489 		return -EINVAL;
4490 	}
4491 
4492 	return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
4493 }
4494 
4495 #ifdef CONFIG_NL80211_TESTMODE
4496 static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
4497 	[IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
4498 	[IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
4499 	[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
4500 };
4501 
__iwl_mvm_mac_testmode_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,void * data,int len)4502 static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
4503 				      struct ieee80211_vif *vif,
4504 				      void *data, int len)
4505 {
4506 	struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
4507 	int err;
4508 	u32 noa_duration;
4509 
4510 	err = nla_parse_deprecated(tb, IWL_MVM_TM_ATTR_MAX, data, len,
4511 				   iwl_mvm_tm_policy, NULL);
4512 	if (err)
4513 		return err;
4514 
4515 	if (!tb[IWL_MVM_TM_ATTR_CMD])
4516 		return -EINVAL;
4517 
4518 	switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
4519 	case IWL_MVM_TM_CMD_SET_NOA:
4520 		if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
4521 		    !vif->bss_conf.enable_beacon ||
4522 		    !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
4523 			return -EINVAL;
4524 
4525 		noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
4526 		if (noa_duration >= vif->bss_conf.beacon_int)
4527 			return -EINVAL;
4528 
4529 		mvm->noa_duration = noa_duration;
4530 		mvm->noa_vif = vif;
4531 
4532 		return iwl_mvm_update_quotas(mvm, true, NULL);
4533 	case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
4534 		/* must be associated client vif - ignore authorized */
4535 		if (!vif || vif->type != NL80211_IFTYPE_STATION ||
4536 		    !vif->cfg.assoc || !vif->bss_conf.dtim_period ||
4537 		    !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
4538 			return -EINVAL;
4539 
4540 		if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
4541 			return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
4542 		return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4543 	}
4544 
4545 	return -EOPNOTSUPP;
4546 }
4547 
iwl_mvm_mac_testmode_cmd(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void * data,int len)4548 static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
4549 				    struct ieee80211_vif *vif,
4550 				    void *data, int len)
4551 {
4552 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4553 	int err;
4554 
4555 	mutex_lock(&mvm->mutex);
4556 	err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
4557 	mutex_unlock(&mvm->mutex);
4558 
4559 	return err;
4560 }
4561 #endif
4562 
iwl_mvm_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4563 static void iwl_mvm_channel_switch(struct ieee80211_hw *hw,
4564 				   struct ieee80211_vif *vif,
4565 				   struct ieee80211_channel_switch *chsw)
4566 {
4567 	/* By implementing this operation, we prevent mac80211 from
4568 	 * starting its own channel switch timer, so that we can call
4569 	 * ieee80211_chswitch_done() ourselves at the right time
4570 	 * (which is when the absence time event starts).
4571 	 */
4572 
4573 	IWL_DEBUG_MAC80211(IWL_MAC80211_GET_MVM(hw),
4574 			   "dummy channel switch op\n");
4575 }
4576 
iwl_mvm_schedule_client_csa(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4577 static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm,
4578 				       struct ieee80211_vif *vif,
4579 				       struct ieee80211_channel_switch *chsw)
4580 {
4581 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4582 	struct iwl_chan_switch_te_cmd cmd = {
4583 		.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4584 							  mvmvif->color)),
4585 		.action = cpu_to_le32(FW_CTXT_ACTION_ADD),
4586 		.tsf = cpu_to_le32(chsw->timestamp),
4587 		.cs_count = chsw->count,
4588 		.cs_mode = chsw->block_tx,
4589 	};
4590 
4591 	lockdep_assert_held(&mvm->mutex);
4592 
4593 	if (chsw->delay)
4594 		cmd.cs_delayed_bcn_count =
4595 			DIV_ROUND_UP(chsw->delay, vif->bss_conf.beacon_int);
4596 
4597 	return iwl_mvm_send_cmd_pdu(mvm,
4598 				    WIDE_ID(MAC_CONF_GROUP,
4599 					    CHANNEL_SWITCH_TIME_EVENT_CMD),
4600 				    0, sizeof(cmd), &cmd);
4601 }
4602 
iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4603 static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm,
4604 				       struct ieee80211_vif *vif,
4605 				       struct ieee80211_channel_switch *chsw)
4606 {
4607 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4608 	u32 apply_time;
4609 
4610 	/* Schedule the time event to a bit before beacon 1,
4611 	 * to make sure we're in the new channel when the
4612 	 * GO/AP arrives. In case count <= 1 immediately schedule the
4613 	 * TE (this might result with some packet loss or connection
4614 	 * loss).
4615 	 */
4616 	if (chsw->count <= 1)
4617 		apply_time = 0;
4618 	else
4619 		apply_time = chsw->device_timestamp +
4620 			((vif->bss_conf.beacon_int * (chsw->count - 1) -
4621 			  IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024);
4622 
4623 	if (chsw->block_tx)
4624 		iwl_mvm_csa_client_absent(mvm, vif);
4625 
4626 	if (mvmvif->bf_data.bf_enabled) {
4627 		int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
4628 
4629 		if (ret)
4630 			return ret;
4631 	}
4632 
4633 	iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int,
4634 				    apply_time);
4635 
4636 	return 0;
4637 }
4638 
4639 #define IWL_MAX_CSA_BLOCK_TX 1500
iwl_mvm_pre_channel_switch(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4640 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw,
4641 				      struct ieee80211_vif *vif,
4642 				      struct ieee80211_channel_switch *chsw)
4643 {
4644 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4645 	struct ieee80211_vif *csa_vif;
4646 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4647 	int ret;
4648 
4649 	mutex_lock(&mvm->mutex);
4650 
4651 	mvmvif->csa_failed = false;
4652 
4653 	IWL_DEBUG_MAC80211(mvm, "pre CSA to freq %d\n",
4654 			   chsw->chandef.center_freq1);
4655 
4656 	iwl_fw_dbg_trigger_simple_stop(&mvm->fwrt,
4657 				       ieee80211_vif_to_wdev(vif),
4658 				       FW_DBG_TRIGGER_CHANNEL_SWITCH);
4659 
4660 	switch (vif->type) {
4661 	case NL80211_IFTYPE_AP:
4662 		csa_vif =
4663 			rcu_dereference_protected(mvm->csa_vif,
4664 						  lockdep_is_held(&mvm->mutex));
4665 		if (WARN_ONCE(csa_vif && csa_vif->bss_conf.csa_active,
4666 			      "Another CSA is already in progress")) {
4667 			ret = -EBUSY;
4668 			goto out_unlock;
4669 		}
4670 
4671 		/* we still didn't unblock tx. prevent new CS meanwhile */
4672 		if (rcu_dereference_protected(mvm->csa_tx_blocked_vif,
4673 					      lockdep_is_held(&mvm->mutex))) {
4674 			ret = -EBUSY;
4675 			goto out_unlock;
4676 		}
4677 
4678 		rcu_assign_pointer(mvm->csa_vif, vif);
4679 
4680 		if (WARN_ONCE(mvmvif->csa_countdown,
4681 			      "Previous CSA countdown didn't complete")) {
4682 			ret = -EBUSY;
4683 			goto out_unlock;
4684 		}
4685 
4686 		mvmvif->csa_target_freq = chsw->chandef.chan->center_freq;
4687 
4688 		break;
4689 	case NL80211_IFTYPE_STATION:
4690 		/*
4691 		 * In the new flow FW is in charge of timing the switch so there
4692 		 * is no need for all of this
4693 		 */
4694 		if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
4695 					    CHANNEL_SWITCH_ERROR_NOTIF,
4696 					    0))
4697 			break;
4698 
4699 		/*
4700 		 * We haven't configured the firmware to be associated yet since
4701 		 * we don't know the dtim period. In this case, the firmware can't
4702 		 * track the beacons.
4703 		 */
4704 		if (!vif->cfg.assoc || !vif->bss_conf.dtim_period) {
4705 			ret = -EBUSY;
4706 			goto out_unlock;
4707 		}
4708 
4709 		if (chsw->delay > IWL_MAX_CSA_BLOCK_TX)
4710 			schedule_delayed_work(&mvmvif->csa_work, 0);
4711 
4712 		if (chsw->block_tx) {
4713 			/*
4714 			 * In case of undetermined / long time with immediate
4715 			 * quiet monitor status to gracefully disconnect
4716 			 */
4717 			if (!chsw->count ||
4718 			    chsw->count * vif->bss_conf.beacon_int >
4719 			    IWL_MAX_CSA_BLOCK_TX)
4720 				schedule_delayed_work(&mvmvif->csa_work,
4721 						      msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX));
4722 		}
4723 
4724 		if (!fw_has_capa(&mvm->fw->ucode_capa,
4725 				 IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) {
4726 			ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw);
4727 			if (ret)
4728 				goto out_unlock;
4729 		} else {
4730 			iwl_mvm_schedule_client_csa(mvm, vif, chsw);
4731 		}
4732 
4733 		mvmvif->csa_count = chsw->count;
4734 		mvmvif->csa_misbehave = false;
4735 		break;
4736 	default:
4737 		break;
4738 	}
4739 
4740 	mvmvif->ps_disabled = true;
4741 
4742 	ret = iwl_mvm_power_update_ps(mvm);
4743 	if (ret)
4744 		goto out_unlock;
4745 
4746 	/* we won't be on this channel any longer */
4747 	iwl_mvm_teardown_tdls_peers(mvm);
4748 
4749 out_unlock:
4750 	mutex_unlock(&mvm->mutex);
4751 
4752 	return ret;
4753 }
4754 
iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_channel_switch * chsw)4755 static void iwl_mvm_channel_switch_rx_beacon(struct ieee80211_hw *hw,
4756 					     struct ieee80211_vif *vif,
4757 					     struct ieee80211_channel_switch *chsw)
4758 {
4759 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4760 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
4761 	struct iwl_chan_switch_te_cmd cmd = {
4762 		.mac_id = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
4763 							  mvmvif->color)),
4764 		.action = cpu_to_le32(FW_CTXT_ACTION_MODIFY),
4765 		.tsf = cpu_to_le32(chsw->timestamp),
4766 		.cs_count = chsw->count,
4767 		.cs_mode = chsw->block_tx,
4768 	};
4769 
4770 	/*
4771 	 * In the new flow FW is in charge of timing the switch so there is no
4772 	 * need for all of this
4773 	 */
4774 	if (iwl_fw_lookup_notif_ver(mvm->fw, MAC_CONF_GROUP,
4775 				    CHANNEL_SWITCH_ERROR_NOTIF, 0))
4776 		return;
4777 
4778 	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_CS_MODIFY))
4779 		return;
4780 
4781 	IWL_DEBUG_MAC80211(mvm, "Modify CSA on mac %d count = %d (old %d) mode = %d\n",
4782 			   mvmvif->id, chsw->count, mvmvif->csa_count, chsw->block_tx);
4783 
4784 	if (chsw->count >= mvmvif->csa_count && chsw->block_tx) {
4785 		if (mvmvif->csa_misbehave) {
4786 			/* Second time, give up on this AP*/
4787 			iwl_mvm_abort_channel_switch(hw, vif);
4788 			ieee80211_chswitch_done(vif, false);
4789 			mvmvif->csa_misbehave = false;
4790 			return;
4791 		}
4792 		mvmvif->csa_misbehave = true;
4793 	}
4794 	mvmvif->csa_count = chsw->count;
4795 
4796 	mutex_lock(&mvm->mutex);
4797 	if (mvmvif->csa_failed)
4798 		goto out_unlock;
4799 
4800 	WARN_ON(iwl_mvm_send_cmd_pdu(mvm,
4801 				     WIDE_ID(MAC_CONF_GROUP,
4802 					     CHANNEL_SWITCH_TIME_EVENT_CMD),
4803 				     0, sizeof(cmd), &cmd));
4804 out_unlock:
4805 	mutex_unlock(&mvm->mutex);
4806 }
4807 
iwl_mvm_flush_no_vif(struct iwl_mvm * mvm,u32 queues,bool drop)4808 static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
4809 {
4810 	int i;
4811 
4812 	if (!iwl_mvm_has_new_tx_api(mvm)) {
4813 		if (drop) {
4814 			mutex_lock(&mvm->mutex);
4815 			iwl_mvm_flush_tx_path(mvm,
4816 				iwl_mvm_flushable_queues(mvm) & queues);
4817 			mutex_unlock(&mvm->mutex);
4818 		} else {
4819 			iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
4820 		}
4821 		return;
4822 	}
4823 
4824 	mutex_lock(&mvm->mutex);
4825 	for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4826 		struct ieee80211_sta *sta;
4827 
4828 		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4829 						lockdep_is_held(&mvm->mutex));
4830 		if (IS_ERR_OR_NULL(sta))
4831 			continue;
4832 
4833 		if (drop)
4834 			iwl_mvm_flush_sta_tids(mvm, i, 0xFFFF);
4835 		else
4836 			iwl_mvm_wait_sta_queues_empty(mvm,
4837 					iwl_mvm_sta_from_mac80211(sta));
4838 	}
4839 	mutex_unlock(&mvm->mutex);
4840 }
4841 
iwl_mvm_mac_flush(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u32 queues,bool drop)4842 static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
4843 			      struct ieee80211_vif *vif, u32 queues, bool drop)
4844 {
4845 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4846 	struct iwl_mvm_vif *mvmvif;
4847 	struct iwl_mvm_sta *mvmsta;
4848 	struct ieee80211_sta *sta;
4849 	int i;
4850 	u32 msk = 0;
4851 
4852 	if (!vif) {
4853 		iwl_mvm_flush_no_vif(mvm, queues, drop);
4854 		return;
4855 	}
4856 
4857 	if (vif->type != NL80211_IFTYPE_STATION)
4858 		return;
4859 
4860 	/* Make sure we're done with the deferred traffic before flushing */
4861 	flush_work(&mvm->add_stream_wk);
4862 
4863 	mutex_lock(&mvm->mutex);
4864 	mvmvif = iwl_mvm_vif_from_mac80211(vif);
4865 
4866 	/* flush the AP-station and all TDLS peers */
4867 	for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {
4868 		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
4869 						lockdep_is_held(&mvm->mutex));
4870 		if (IS_ERR_OR_NULL(sta))
4871 			continue;
4872 
4873 		mvmsta = iwl_mvm_sta_from_mac80211(sta);
4874 		if (mvmsta->vif != vif)
4875 			continue;
4876 
4877 		/* make sure only TDLS peers or the AP are flushed */
4878 		WARN_ON(i != mvmvif->ap_sta_id && !sta->tdls);
4879 
4880 		if (drop) {
4881 			if (iwl_mvm_flush_sta(mvm, mvmsta, false))
4882 				IWL_ERR(mvm, "flush request fail\n");
4883 		} else {
4884 			msk |= mvmsta->tfd_queue_msk;
4885 			if (iwl_mvm_has_new_tx_api(mvm))
4886 				iwl_mvm_wait_sta_queues_empty(mvm, mvmsta);
4887 		}
4888 	}
4889 
4890 	mutex_unlock(&mvm->mutex);
4891 
4892 	/* this can take a while, and we may need/want other operations
4893 	 * to succeed while doing this, so do it without the mutex held
4894 	 */
4895 	if (!drop && !iwl_mvm_has_new_tx_api(mvm))
4896 		iwl_trans_wait_tx_queues_empty(mvm->trans, msk);
4897 }
4898 
iwl_mvm_mac_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)4899 static int iwl_mvm_mac_get_survey(struct ieee80211_hw *hw, int idx,
4900 				  struct survey_info *survey)
4901 {
4902 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
4903 	int ret;
4904 
4905 	memset(survey, 0, sizeof(*survey));
4906 
4907 	/* only support global statistics right now */
4908 	if (idx != 0)
4909 		return -ENOENT;
4910 
4911 	if (!fw_has_capa(&mvm->fw->ucode_capa,
4912 			 IWL_UCODE_TLV_CAPA_RADIO_BEACON_STATS))
4913 		return -ENOENT;
4914 
4915 	mutex_lock(&mvm->mutex);
4916 
4917 	if (iwl_mvm_firmware_running(mvm)) {
4918 		ret = iwl_mvm_request_statistics(mvm, false);
4919 		if (ret)
4920 			goto out;
4921 	}
4922 
4923 	survey->filled = SURVEY_INFO_TIME |
4924 			 SURVEY_INFO_TIME_RX |
4925 			 SURVEY_INFO_TIME_TX |
4926 			 SURVEY_INFO_TIME_SCAN;
4927 	survey->time = mvm->accu_radio_stats.on_time_rf +
4928 		       mvm->radio_stats.on_time_rf;
4929 	do_div(survey->time, USEC_PER_MSEC);
4930 
4931 	survey->time_rx = mvm->accu_radio_stats.rx_time +
4932 			  mvm->radio_stats.rx_time;
4933 	do_div(survey->time_rx, USEC_PER_MSEC);
4934 
4935 	survey->time_tx = mvm->accu_radio_stats.tx_time +
4936 			  mvm->radio_stats.tx_time;
4937 	do_div(survey->time_tx, USEC_PER_MSEC);
4938 
4939 	survey->time_scan = mvm->accu_radio_stats.on_time_scan +
4940 			    mvm->radio_stats.on_time_scan;
4941 	do_div(survey->time_scan, USEC_PER_MSEC);
4942 
4943 	ret = 0;
4944  out:
4945 	mutex_unlock(&mvm->mutex);
4946 	return ret;
4947 }
4948 
iwl_mvm_set_sta_rate(u32 rate_n_flags,struct rate_info * rinfo)4949 static void iwl_mvm_set_sta_rate(u32 rate_n_flags, struct rate_info *rinfo)
4950 {
4951 	u32 format = rate_n_flags & RATE_MCS_MOD_TYPE_MSK;
4952 	u32 gi_ltf;
4953 
4954 	switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK) {
4955 	case RATE_MCS_CHAN_WIDTH_20:
4956 		rinfo->bw = RATE_INFO_BW_20;
4957 		break;
4958 	case RATE_MCS_CHAN_WIDTH_40:
4959 		rinfo->bw = RATE_INFO_BW_40;
4960 		break;
4961 	case RATE_MCS_CHAN_WIDTH_80:
4962 		rinfo->bw = RATE_INFO_BW_80;
4963 		break;
4964 	case RATE_MCS_CHAN_WIDTH_160:
4965 		rinfo->bw = RATE_INFO_BW_160;
4966 		break;
4967 	}
4968 
4969 	if (format == RATE_MCS_CCK_MSK ||
4970 	    format == RATE_MCS_LEGACY_OFDM_MSK) {
4971 		int rate = u32_get_bits(rate_n_flags, RATE_LEGACY_RATE_MSK);
4972 
4973 		/* add the offset needed to get to the legacy ofdm indices */
4974 		if (format == RATE_MCS_LEGACY_OFDM_MSK)
4975 			rate += IWL_FIRST_OFDM_RATE;
4976 
4977 		switch (rate) {
4978 		case IWL_RATE_1M_INDEX:
4979 			rinfo->legacy = 10;
4980 			break;
4981 		case IWL_RATE_2M_INDEX:
4982 			rinfo->legacy = 20;
4983 			break;
4984 		case IWL_RATE_5M_INDEX:
4985 			rinfo->legacy = 55;
4986 			break;
4987 		case IWL_RATE_11M_INDEX:
4988 			rinfo->legacy = 110;
4989 			break;
4990 		case IWL_RATE_6M_INDEX:
4991 			rinfo->legacy = 60;
4992 			break;
4993 		case IWL_RATE_9M_INDEX:
4994 			rinfo->legacy = 90;
4995 			break;
4996 		case IWL_RATE_12M_INDEX:
4997 			rinfo->legacy = 120;
4998 			break;
4999 		case IWL_RATE_18M_INDEX:
5000 			rinfo->legacy = 180;
5001 			break;
5002 		case IWL_RATE_24M_INDEX:
5003 			rinfo->legacy = 240;
5004 			break;
5005 		case IWL_RATE_36M_INDEX:
5006 			rinfo->legacy = 360;
5007 			break;
5008 		case IWL_RATE_48M_INDEX:
5009 			rinfo->legacy = 480;
5010 			break;
5011 		case IWL_RATE_54M_INDEX:
5012 			rinfo->legacy = 540;
5013 		}
5014 		return;
5015 	}
5016 
5017 	rinfo->nss = u32_get_bits(rate_n_flags,
5018 				  RATE_MCS_NSS_MSK) + 1;
5019 	rinfo->mcs = format == RATE_MCS_HT_MSK ?
5020 		RATE_HT_MCS_INDEX(rate_n_flags) :
5021 		u32_get_bits(rate_n_flags, RATE_MCS_CODE_MSK);
5022 
5023 	if (rate_n_flags & RATE_MCS_SGI_MSK)
5024 		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
5025 
5026 	switch (format) {
5027 	case RATE_MCS_HE_MSK:
5028 		gi_ltf = u32_get_bits(rate_n_flags, RATE_MCS_HE_GI_LTF_MSK);
5029 
5030 		rinfo->flags |= RATE_INFO_FLAGS_HE_MCS;
5031 
5032 		if (rate_n_flags & RATE_MCS_HE_106T_MSK) {
5033 			rinfo->bw = RATE_INFO_BW_HE_RU;
5034 			rinfo->he_ru_alloc = NL80211_RATE_INFO_HE_RU_ALLOC_106;
5035 		}
5036 
5037 		switch (rate_n_flags & RATE_MCS_HE_TYPE_MSK) {
5038 		case RATE_MCS_HE_TYPE_SU:
5039 		case RATE_MCS_HE_TYPE_EXT_SU:
5040 			if (gi_ltf == 0 || gi_ltf == 1)
5041 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
5042 			else if (gi_ltf == 2)
5043 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
5044 			else if (gi_ltf == 3)
5045 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
5046 			else
5047 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
5048 			break;
5049 		case RATE_MCS_HE_TYPE_MU:
5050 			if (gi_ltf == 0 || gi_ltf == 1)
5051 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_0_8;
5052 			else if (gi_ltf == 2)
5053 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
5054 			else
5055 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
5056 			break;
5057 		case RATE_MCS_HE_TYPE_TRIG:
5058 			if (gi_ltf == 0 || gi_ltf == 1)
5059 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_1_6;
5060 			else
5061 				rinfo->he_gi = NL80211_RATE_INFO_HE_GI_3_2;
5062 			break;
5063 		}
5064 
5065 		if (rate_n_flags & RATE_HE_DUAL_CARRIER_MODE_MSK)
5066 			rinfo->he_dcm = 1;
5067 		break;
5068 	case RATE_MCS_HT_MSK:
5069 		rinfo->flags |= RATE_INFO_FLAGS_MCS;
5070 		break;
5071 	case RATE_MCS_VHT_MSK:
5072 		rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
5073 		break;
5074 	}
5075 }
5076 
iwl_mvm_mac_sta_statistics(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct station_info * sinfo)5077 static void iwl_mvm_mac_sta_statistics(struct ieee80211_hw *hw,
5078 				       struct ieee80211_vif *vif,
5079 				       struct ieee80211_sta *sta,
5080 				       struct station_info *sinfo)
5081 {
5082 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5083 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5084 	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
5085 
5086 	if (mvmsta->avg_energy) {
5087 		sinfo->signal_avg = -(s8)mvmsta->avg_energy;
5088 		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL_AVG);
5089 	}
5090 
5091 	if (iwl_mvm_has_tlc_offload(mvm)) {
5092 		struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
5093 
5094 		iwl_mvm_set_sta_rate(lq_sta->last_rate_n_flags, &sinfo->txrate);
5095 		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
5096 	}
5097 
5098 	/* if beacon filtering isn't on mac80211 does it anyway */
5099 	if (!(vif->driver_flags & IEEE80211_VIF_BEACON_FILTER))
5100 		return;
5101 
5102 	if (!vif->cfg.assoc)
5103 		return;
5104 
5105 	mutex_lock(&mvm->mutex);
5106 
5107 	if (mvmvif->ap_sta_id != mvmsta->sta_id)
5108 		goto unlock;
5109 
5110 	if (iwl_mvm_request_statistics(mvm, false))
5111 		goto unlock;
5112 
5113 	sinfo->rx_beacon = mvmvif->beacon_stats.num_beacons +
5114 			   mvmvif->beacon_stats.accu_num_beacons;
5115 	sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_RX);
5116 	if (mvmvif->beacon_stats.avg_signal) {
5117 		/* firmware only reports a value after RXing a few beacons */
5118 		sinfo->rx_beacon_signal_avg = mvmvif->beacon_stats.avg_signal;
5119 		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
5120 	}
5121  unlock:
5122 	mutex_unlock(&mvm->mutex);
5123 }
5124 
iwl_mvm_event_mlme_callback_ini(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_mlme_event * mlme)5125 static void iwl_mvm_event_mlme_callback_ini(struct iwl_mvm *mvm,
5126 					    struct ieee80211_vif *vif,
5127 					    const  struct ieee80211_mlme_event *mlme)
5128 {
5129 	if ((mlme->data == ASSOC_EVENT || mlme->data == AUTH_EVENT) &&
5130 	    (mlme->status == MLME_DENIED || mlme->status == MLME_TIMEOUT)) {
5131 		iwl_dbg_tlv_time_point(&mvm->fwrt,
5132 				       IWL_FW_INI_TIME_POINT_ASSOC_FAILED,
5133 				       NULL);
5134 		return;
5135 	}
5136 
5137 	if (mlme->data == DEAUTH_RX_EVENT || mlme->data == DEAUTH_TX_EVENT) {
5138 		iwl_dbg_tlv_time_point(&mvm->fwrt,
5139 				       IWL_FW_INI_TIME_POINT_DEASSOC,
5140 				       NULL);
5141 		return;
5142 	}
5143 }
5144 
iwl_mvm_event_mlme_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)5145 static void iwl_mvm_event_mlme_callback(struct iwl_mvm *mvm,
5146 					struct ieee80211_vif *vif,
5147 					const struct ieee80211_event *event)
5148 {
5149 #define CHECK_MLME_TRIGGER(_cnt, _fmt...)				\
5150 	do {								\
5151 		if ((trig_mlme->_cnt) && --(trig_mlme->_cnt))		\
5152 			break;						\
5153 		iwl_fw_dbg_collect_trig(&(mvm)->fwrt, trig, _fmt);	\
5154 	} while (0)
5155 
5156 	struct iwl_fw_dbg_trigger_tlv *trig;
5157 	struct iwl_fw_dbg_trigger_mlme *trig_mlme;
5158 
5159 	if (iwl_trans_dbg_ini_valid(mvm->trans)) {
5160 		iwl_mvm_event_mlme_callback_ini(mvm, vif, &event->u.mlme);
5161 		return;
5162 	}
5163 
5164 	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5165 				     FW_DBG_TRIGGER_MLME);
5166 	if (!trig)
5167 		return;
5168 
5169 	trig_mlme = (void *)trig->data;
5170 
5171 	if (event->u.mlme.data == ASSOC_EVENT) {
5172 		if (event->u.mlme.status == MLME_DENIED)
5173 			CHECK_MLME_TRIGGER(stop_assoc_denied,
5174 					   "DENIED ASSOC: reason %d",
5175 					    event->u.mlme.reason);
5176 		else if (event->u.mlme.status == MLME_TIMEOUT)
5177 			CHECK_MLME_TRIGGER(stop_assoc_timeout,
5178 					   "ASSOC TIMEOUT");
5179 	} else if (event->u.mlme.data == AUTH_EVENT) {
5180 		if (event->u.mlme.status == MLME_DENIED)
5181 			CHECK_MLME_TRIGGER(stop_auth_denied,
5182 					   "DENIED AUTH: reason %d",
5183 					   event->u.mlme.reason);
5184 		else if (event->u.mlme.status == MLME_TIMEOUT)
5185 			CHECK_MLME_TRIGGER(stop_auth_timeout,
5186 					   "AUTH TIMEOUT");
5187 	} else if (event->u.mlme.data == DEAUTH_RX_EVENT) {
5188 		CHECK_MLME_TRIGGER(stop_rx_deauth,
5189 				   "DEAUTH RX %d", event->u.mlme.reason);
5190 	} else if (event->u.mlme.data == DEAUTH_TX_EVENT) {
5191 		CHECK_MLME_TRIGGER(stop_tx_deauth,
5192 				   "DEAUTH TX %d", event->u.mlme.reason);
5193 	}
5194 #undef CHECK_MLME_TRIGGER
5195 }
5196 
iwl_mvm_event_bar_rx_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_event * event)5197 static void iwl_mvm_event_bar_rx_callback(struct iwl_mvm *mvm,
5198 					  struct ieee80211_vif *vif,
5199 					  const struct ieee80211_event *event)
5200 {
5201 	struct iwl_fw_dbg_trigger_tlv *trig;
5202 	struct iwl_fw_dbg_trigger_ba *ba_trig;
5203 
5204 	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
5205 				     FW_DBG_TRIGGER_BA);
5206 	if (!trig)
5207 		return;
5208 
5209 	ba_trig = (void *)trig->data;
5210 
5211 	if (!(le16_to_cpu(ba_trig->rx_bar) & BIT(event->u.ba.tid)))
5212 		return;
5213 
5214 	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
5215 				"BAR received from %pM, tid %d, ssn %d",
5216 				event->u.ba.sta->addr, event->u.ba.tid,
5217 				event->u.ba.ssn);
5218 }
5219 
iwl_mvm_mac_event_callback(struct ieee80211_hw * hw,struct ieee80211_vif * vif,const struct ieee80211_event * event)5220 static void iwl_mvm_mac_event_callback(struct ieee80211_hw *hw,
5221 				       struct ieee80211_vif *vif,
5222 				       const struct ieee80211_event *event)
5223 {
5224 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5225 
5226 	switch (event->type) {
5227 	case MLME_EVENT:
5228 		iwl_mvm_event_mlme_callback(mvm, vif, event);
5229 		break;
5230 	case BAR_RX_EVENT:
5231 		iwl_mvm_event_bar_rx_callback(mvm, vif, event);
5232 		break;
5233 	case BA_FRAME_TIMEOUT:
5234 		iwl_mvm_event_frame_timeout_callback(mvm, vif, event->u.ba.sta,
5235 						     event->u.ba.tid);
5236 		break;
5237 	default:
5238 		break;
5239 	}
5240 }
5241 
iwl_mvm_sync_rx_queues_internal(struct iwl_mvm * mvm,enum iwl_mvm_rxq_notif_type type,bool sync,const void * data,u32 size)5242 void iwl_mvm_sync_rx_queues_internal(struct iwl_mvm *mvm,
5243 				     enum iwl_mvm_rxq_notif_type type,
5244 				     bool sync,
5245 				     const void *data, u32 size)
5246 {
5247 	struct {
5248 		struct iwl_rxq_sync_cmd cmd;
5249 		struct iwl_mvm_internal_rxq_notif notif;
5250 	} __packed cmd = {
5251 		.cmd.rxq_mask = cpu_to_le32(BIT(mvm->trans->num_rx_queues) - 1),
5252 		.cmd.count =
5253 			cpu_to_le32(sizeof(struct iwl_mvm_internal_rxq_notif) +
5254 				    size),
5255 		.notif.type = type,
5256 		.notif.sync = sync,
5257 	};
5258 	struct iwl_host_cmd hcmd = {
5259 		.id = WIDE_ID(DATA_PATH_GROUP, TRIGGER_RX_QUEUES_NOTIF_CMD),
5260 		.data[0] = &cmd,
5261 		.len[0] = sizeof(cmd),
5262 		.data[1] = data,
5263 		.len[1] = size,
5264 		.flags = sync ? 0 : CMD_ASYNC,
5265 	};
5266 	int ret;
5267 
5268 	/* size must be a multiple of DWORD */
5269 	if (WARN_ON(cmd.cmd.count & cpu_to_le32(3)))
5270 		return;
5271 
5272 	if (!iwl_mvm_has_new_rx_api(mvm))
5273 		return;
5274 
5275 	if (sync) {
5276 		cmd.notif.cookie = mvm->queue_sync_cookie;
5277 		mvm->queue_sync_state = (1 << mvm->trans->num_rx_queues) - 1;
5278 	}
5279 
5280 	ret = iwl_mvm_send_cmd(mvm, &hcmd);
5281 	if (ret) {
5282 		IWL_ERR(mvm, "Failed to trigger RX queues sync (%d)\n", ret);
5283 		goto out;
5284 	}
5285 
5286 	if (sync) {
5287 		lockdep_assert_held(&mvm->mutex);
5288 		ret = wait_event_timeout(mvm->rx_sync_waitq,
5289 					 READ_ONCE(mvm->queue_sync_state) == 0 ||
5290 					 iwl_mvm_is_radio_killed(mvm),
5291 					 HZ);
5292 		WARN_ONCE(!ret && !iwl_mvm_is_radio_killed(mvm),
5293 			  "queue sync: failed to sync, state is 0x%lx\n",
5294 			  mvm->queue_sync_state);
5295 	}
5296 
5297 out:
5298 	if (sync) {
5299 		mvm->queue_sync_state = 0;
5300 		mvm->queue_sync_cookie++;
5301 	}
5302 }
5303 
iwl_mvm_sync_rx_queues(struct ieee80211_hw * hw)5304 static void iwl_mvm_sync_rx_queues(struct ieee80211_hw *hw)
5305 {
5306 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5307 
5308 	mutex_lock(&mvm->mutex);
5309 	iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_EMPTY, true, NULL, 0);
5310 	mutex_unlock(&mvm->mutex);
5311 }
5312 
5313 static int
iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_ftm_responder_stats * stats)5314 iwl_mvm_mac_get_ftm_responder_stats(struct ieee80211_hw *hw,
5315 				    struct ieee80211_vif *vif,
5316 				    struct cfg80211_ftm_responder_stats *stats)
5317 {
5318 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5319 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
5320 
5321 	if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
5322 	    !mvmvif->ap_ibss_active || !vif->bss_conf.ftm_responder)
5323 		return -EINVAL;
5324 
5325 	mutex_lock(&mvm->mutex);
5326 	*stats = mvm->ftm_resp_stats;
5327 	mutex_unlock(&mvm->mutex);
5328 
5329 	stats->filled = BIT(NL80211_FTM_STATS_SUCCESS_NUM) |
5330 			BIT(NL80211_FTM_STATS_PARTIAL_NUM) |
5331 			BIT(NL80211_FTM_STATS_FAILED_NUM) |
5332 			BIT(NL80211_FTM_STATS_ASAP_NUM) |
5333 			BIT(NL80211_FTM_STATS_NON_ASAP_NUM) |
5334 			BIT(NL80211_FTM_STATS_TOTAL_DURATION_MSEC) |
5335 			BIT(NL80211_FTM_STATS_UNKNOWN_TRIGGERS_NUM) |
5336 			BIT(NL80211_FTM_STATS_RESCHEDULE_REQUESTS_NUM) |
5337 			BIT(NL80211_FTM_STATS_OUT_OF_WINDOW_TRIGGERS_NUM);
5338 
5339 	return 0;
5340 }
5341 
iwl_mvm_start_pmsr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_pmsr_request * request)5342 static int iwl_mvm_start_pmsr(struct ieee80211_hw *hw,
5343 			      struct ieee80211_vif *vif,
5344 			      struct cfg80211_pmsr_request *request)
5345 {
5346 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5347 	int ret;
5348 
5349 	mutex_lock(&mvm->mutex);
5350 	ret = iwl_mvm_ftm_start(mvm, vif, request);
5351 	mutex_unlock(&mvm->mutex);
5352 
5353 	return ret;
5354 }
5355 
iwl_mvm_abort_pmsr(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_pmsr_request * request)5356 static void iwl_mvm_abort_pmsr(struct ieee80211_hw *hw,
5357 			       struct ieee80211_vif *vif,
5358 			       struct cfg80211_pmsr_request *request)
5359 {
5360 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5361 
5362 	mutex_lock(&mvm->mutex);
5363 	iwl_mvm_ftm_abort(mvm, request);
5364 	mutex_unlock(&mvm->mutex);
5365 }
5366 
iwl_mvm_can_hw_csum(struct sk_buff * skb)5367 static bool iwl_mvm_can_hw_csum(struct sk_buff *skb)
5368 {
5369 	u8 protocol = ip_hdr(skb)->protocol;
5370 
5371 	if (!IS_ENABLED(CONFIG_INET))
5372 		return false;
5373 
5374 	return protocol == IPPROTO_TCP || protocol == IPPROTO_UDP;
5375 }
5376 
iwl_mvm_mac_can_aggregate(struct ieee80211_hw * hw,struct sk_buff * head,struct sk_buff * skb)5377 static bool iwl_mvm_mac_can_aggregate(struct ieee80211_hw *hw,
5378 				      struct sk_buff *head,
5379 				      struct sk_buff *skb)
5380 {
5381 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5382 
5383 	if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
5384 		return iwl_mvm_tx_csum_bz(mvm, head, true) ==
5385 		       iwl_mvm_tx_csum_bz(mvm, skb, true);
5386 
5387 	/* For now don't aggregate IPv6 in AMSDU */
5388 	if (skb->protocol != htons(ETH_P_IP))
5389 		return false;
5390 
5391 	if (!iwl_mvm_is_csum_supported(mvm))
5392 		return true;
5393 
5394 	return iwl_mvm_can_hw_csum(skb) == iwl_mvm_can_hw_csum(head);
5395 }
5396 
5397 const struct ieee80211_ops iwl_mvm_hw_ops = {
5398 	.tx = iwl_mvm_mac_tx,
5399 	.wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
5400 	.ampdu_action = iwl_mvm_mac_ampdu_action,
5401 	.get_antenna = iwl_mvm_op_get_antenna,
5402 	.start = iwl_mvm_mac_start,
5403 	.reconfig_complete = iwl_mvm_mac_reconfig_complete,
5404 	.stop = iwl_mvm_mac_stop,
5405 	.add_interface = iwl_mvm_mac_add_interface,
5406 	.remove_interface = iwl_mvm_mac_remove_interface,
5407 	.config = iwl_mvm_mac_config,
5408 	.prepare_multicast = iwl_mvm_prepare_multicast,
5409 	.configure_filter = iwl_mvm_configure_filter,
5410 	.config_iface_filter = iwl_mvm_config_iface_filter,
5411 	.bss_info_changed = iwl_mvm_bss_info_changed,
5412 	.hw_scan = iwl_mvm_mac_hw_scan,
5413 	.cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
5414 	.sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
5415 	.sta_state = iwl_mvm_mac_sta_state,
5416 	.sta_notify = iwl_mvm_mac_sta_notify,
5417 	.allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
5418 	.release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
5419 	.set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
5420 	.sta_rc_update = iwl_mvm_sta_rc_update,
5421 	.conf_tx = iwl_mvm_mac_conf_tx,
5422 	.mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
5423 	.mgd_complete_tx = iwl_mvm_mac_mgd_complete_tx,
5424 	.mgd_protect_tdls_discover = iwl_mvm_mac_mgd_protect_tdls_discover,
5425 	.flush = iwl_mvm_mac_flush,
5426 	.sched_scan_start = iwl_mvm_mac_sched_scan_start,
5427 	.sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
5428 	.set_key = iwl_mvm_mac_set_key,
5429 	.update_tkip_key = iwl_mvm_mac_update_tkip_key,
5430 	.remain_on_channel = iwl_mvm_roc,
5431 	.cancel_remain_on_channel = iwl_mvm_cancel_roc,
5432 	.add_chanctx = iwl_mvm_add_chanctx,
5433 	.remove_chanctx = iwl_mvm_remove_chanctx,
5434 	.change_chanctx = iwl_mvm_change_chanctx,
5435 	.assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
5436 	.unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
5437 	.switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
5438 
5439 	.start_ap = iwl_mvm_start_ap,
5440 	.stop_ap = iwl_mvm_stop_ap,
5441 	.join_ibss = iwl_mvm_start_ibss,
5442 	.leave_ibss = iwl_mvm_stop_ibss,
5443 
5444 	.tx_last_beacon = iwl_mvm_tx_last_beacon,
5445 
5446 	.set_tim = iwl_mvm_set_tim,
5447 
5448 	.channel_switch = iwl_mvm_channel_switch,
5449 	.pre_channel_switch = iwl_mvm_pre_channel_switch,
5450 	.post_channel_switch = iwl_mvm_post_channel_switch,
5451 	.abort_channel_switch = iwl_mvm_abort_channel_switch,
5452 	.channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,
5453 
5454 	.tdls_channel_switch = iwl_mvm_tdls_channel_switch,
5455 	.tdls_cancel_channel_switch = iwl_mvm_tdls_cancel_channel_switch,
5456 	.tdls_recv_channel_switch = iwl_mvm_tdls_recv_channel_switch,
5457 
5458 	.event_callback = iwl_mvm_mac_event_callback,
5459 
5460 	.sync_rx_queues = iwl_mvm_sync_rx_queues,
5461 
5462 	CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
5463 
5464 #ifdef CONFIG_PM_SLEEP
5465 	/* look at d3.c */
5466 	.suspend = iwl_mvm_suspend,
5467 	.resume = iwl_mvm_resume,
5468 	.set_wakeup = iwl_mvm_set_wakeup,
5469 	.set_rekey_data = iwl_mvm_set_rekey_data,
5470 #if IS_ENABLED(CONFIG_IPV6)
5471 	.ipv6_addr_change = iwl_mvm_ipv6_addr_change,
5472 #endif
5473 	.set_default_unicast_key = iwl_mvm_set_default_unicast_key,
5474 #endif
5475 	.get_survey = iwl_mvm_mac_get_survey,
5476 	.sta_statistics = iwl_mvm_mac_sta_statistics,
5477 	.get_ftm_responder_stats = iwl_mvm_mac_get_ftm_responder_stats,
5478 	.start_pmsr = iwl_mvm_start_pmsr,
5479 	.abort_pmsr = iwl_mvm_abort_pmsr,
5480 
5481 	.can_aggregate_in_amsdu = iwl_mvm_mac_can_aggregate,
5482 #ifdef CONFIG_IWLWIFI_DEBUGFS
5483 	.sta_add_debugfs = iwl_mvm_sta_add_debugfs,
5484 #endif
5485 };
5486