1 /*
2  * NXP Wireless LAN device driver: TDLS handling
3  *
4  * Copyright 2011-2020 NXP
5  *
6  * This software file (the "File") is distributed by NXP
7  * under the terms of the GNU General Public License Version 2, June 1991
8  * (the "License").  You may use, redistribute and/or modify this File in
9  * accordance with the terms and conditions of the License, a copy of which
10  * is available on the worldwide web at
11  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
12  *
13  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
14  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
15  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
16  * this warranty disclaimer.
17  */
18 
19 #include "main.h"
20 #include "wmm.h"
21 #include "11n.h"
22 #include "11n_rxreorder.h"
23 #include "11ac.h"
24 
25 #define TDLS_REQ_FIX_LEN      6
26 #define TDLS_RESP_FIX_LEN     8
27 #define TDLS_CONFIRM_FIX_LEN  6
28 #define MWIFIEX_TDLS_WMM_INFO_SIZE 7
29 
mwifiex_restore_tdls_packets(struct mwifiex_private * priv,const u8 * mac,u8 status)30 static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv,
31 					 const u8 *mac, u8 status)
32 {
33 	struct mwifiex_ra_list_tbl *ra_list;
34 	struct list_head *tid_list;
35 	struct sk_buff *skb, *tmp;
36 	struct mwifiex_txinfo *tx_info;
37 	u32 tid;
38 	u8 tid_down;
39 
40 	mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
41 	spin_lock_bh(&priv->wmm.ra_list_spinlock);
42 
43 	skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
44 		if (!ether_addr_equal(mac, skb->data))
45 			continue;
46 
47 		__skb_unlink(skb, &priv->tdls_txq);
48 		tx_info = MWIFIEX_SKB_TXCB(skb);
49 		tid = skb->priority;
50 		tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
51 
52 		if (mwifiex_is_tdls_link_setup(status)) {
53 			ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac);
54 			ra_list->tdls_link = true;
55 			tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
56 		} else {
57 			tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list;
58 			ra_list = list_first_entry_or_null(tid_list,
59 					struct mwifiex_ra_list_tbl, list);
60 			tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
61 		}
62 
63 		if (!ra_list) {
64 			mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
65 			continue;
66 		}
67 
68 		skb_queue_tail(&ra_list->skb_head, skb);
69 
70 		ra_list->ba_pkt_count++;
71 		ra_list->total_pkt_count++;
72 
73 		if (atomic_read(&priv->wmm.highest_queued_prio) <
74 						       tos_to_tid_inv[tid_down])
75 			atomic_set(&priv->wmm.highest_queued_prio,
76 				   tos_to_tid_inv[tid_down]);
77 
78 		atomic_inc(&priv->wmm.tx_pkts_queued);
79 	}
80 
81 	spin_unlock_bh(&priv->wmm.ra_list_spinlock);
82 	return;
83 }
84 
mwifiex_hold_tdls_packets(struct mwifiex_private * priv,const u8 * mac)85 static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
86 				      const u8 *mac)
87 {
88 	struct mwifiex_ra_list_tbl *ra_list;
89 	struct list_head *ra_list_head;
90 	struct sk_buff *skb, *tmp;
91 	int i;
92 
93 	mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
94 	spin_lock_bh(&priv->wmm.ra_list_spinlock);
95 
96 	for (i = 0; i < MAX_NUM_TID; i++) {
97 		if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
98 			ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
99 			list_for_each_entry(ra_list, ra_list_head, list) {
100 				skb_queue_walk_safe(&ra_list->skb_head, skb,
101 						    tmp) {
102 					if (!ether_addr_equal(mac, skb->data))
103 						continue;
104 					__skb_unlink(skb, &ra_list->skb_head);
105 					atomic_dec(&priv->wmm.tx_pkts_queued);
106 					ra_list->total_pkt_count--;
107 					skb_queue_tail(&priv->tdls_txq, skb);
108 				}
109 			}
110 		}
111 	}
112 
113 	spin_unlock_bh(&priv->wmm.ra_list_spinlock);
114 	return;
115 }
116 
117 /* This function appends rate TLV to scan config command. */
118 static int
mwifiex_tdls_append_rates_ie(struct mwifiex_private * priv,struct sk_buff * skb)119 mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
120 			     struct sk_buff *skb)
121 {
122 	u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
123 	u16 rates_size, supp_rates_size, ext_rates_size;
124 
125 	memset(rates, 0, sizeof(rates));
126 	rates_size = mwifiex_get_supported_rates(priv, rates);
127 
128 	supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
129 
130 	if (skb_tailroom(skb) < rates_size + 4) {
131 		mwifiex_dbg(priv->adapter, ERROR,
132 			    "Insufficient space while adding rates\n");
133 		return -ENOMEM;
134 	}
135 
136 	pos = skb_put(skb, supp_rates_size + 2);
137 	*pos++ = WLAN_EID_SUPP_RATES;
138 	*pos++ = supp_rates_size;
139 	memcpy(pos, rates, supp_rates_size);
140 
141 	if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
142 		ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
143 		pos = skb_put(skb, ext_rates_size + 2);
144 		*pos++ = WLAN_EID_EXT_SUPP_RATES;
145 		*pos++ = ext_rates_size;
146 		memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
147 		       ext_rates_size);
148 	}
149 
150 	return 0;
151 }
152 
mwifiex_tdls_add_aid(struct mwifiex_private * priv,struct sk_buff * skb)153 static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
154 				struct sk_buff *skb)
155 {
156 	struct ieee_types_assoc_rsp *assoc_rsp;
157 	u8 *pos;
158 
159 	assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
160 	pos = skb_put(skb, 4);
161 	*pos++ = WLAN_EID_AID;
162 	*pos++ = 2;
163 	memcpy(pos, &assoc_rsp->a_id, sizeof(assoc_rsp->a_id));
164 
165 	return;
166 }
167 
mwifiex_tdls_add_vht_capab(struct mwifiex_private * priv,struct sk_buff * skb)168 static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
169 				      struct sk_buff *skb)
170 {
171 	struct ieee80211_vht_cap vht_cap;
172 	u8 *pos;
173 
174 	pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
175 	*pos++ = WLAN_EID_VHT_CAPABILITY;
176 	*pos++ = sizeof(struct ieee80211_vht_cap);
177 
178 	memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
179 
180 	mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
181 	memcpy(pos, &vht_cap, sizeof(vht_cap));
182 
183 	return 0;
184 }
185 
186 static int
mwifiex_tdls_add_ht_oper(struct mwifiex_private * priv,const u8 * mac,u8 vht_enabled,struct sk_buff * skb)187 mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
188 			 u8 vht_enabled, struct sk_buff *skb)
189 {
190 	struct ieee80211_ht_operation *ht_oper;
191 	struct mwifiex_sta_node *sta_ptr;
192 	struct mwifiex_bssdescriptor *bss_desc =
193 					&priv->curr_bss_params.bss_descriptor;
194 	u8 *pos;
195 
196 	sta_ptr = mwifiex_get_sta_entry(priv, mac);
197 	if (unlikely(!sta_ptr)) {
198 		mwifiex_dbg(priv->adapter, ERROR,
199 			    "TDLS peer station not found in list\n");
200 		return -1;
201 	}
202 
203 	if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) {
204 		mwifiex_dbg(priv->adapter, WARN,
205 			    "TDLS peer doesn't support ht capabilities\n");
206 		return 0;
207 	}
208 
209 	pos = skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
210 	*pos++ = WLAN_EID_HT_OPERATION;
211 	*pos++ = sizeof(struct ieee80211_ht_operation);
212 	ht_oper = (void *)pos;
213 
214 	ht_oper->primary_chan = bss_desc->channel;
215 
216 	/* follow AP's channel bandwidth */
217 	if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
218 	    bss_desc->bcn_ht_cap &&
219 	    ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
220 		ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
221 
222 	if (vht_enabled) {
223 		ht_oper->ht_param =
224 			  mwifiex_get_sec_chan_offset(bss_desc->channel);
225 		ht_oper->ht_param |= BIT(2);
226 	}
227 
228 	memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
229 	       sizeof(struct ieee80211_ht_operation));
230 
231 	return 0;
232 }
233 
mwifiex_tdls_add_vht_oper(struct mwifiex_private * priv,const u8 * mac,struct sk_buff * skb)234 static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
235 				     const u8 *mac, struct sk_buff *skb)
236 {
237 	struct mwifiex_bssdescriptor *bss_desc;
238 	struct ieee80211_vht_operation *vht_oper;
239 	struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
240 	struct mwifiex_sta_node *sta_ptr;
241 	struct mwifiex_adapter *adapter = priv->adapter;
242 	u8 supp_chwd_set, peer_supp_chwd_set;
243 	u8 *pos, ap_supp_chwd_set, chan_bw;
244 	u16 mcs_map_user, mcs_map_resp, mcs_map_result;
245 	u16 mcs_user, mcs_resp, nss;
246 	u32 usr_vht_cap_info;
247 
248 	bss_desc = &priv->curr_bss_params.bss_descriptor;
249 
250 	sta_ptr = mwifiex_get_sta_entry(priv, mac);
251 	if (unlikely(!sta_ptr)) {
252 		mwifiex_dbg(adapter, ERROR,
253 			    "TDLS peer station not found in list\n");
254 		return -1;
255 	}
256 
257 	if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) {
258 		mwifiex_dbg(adapter, WARN,
259 			    "TDLS peer doesn't support vht capabilities\n");
260 		return 0;
261 	}
262 
263 	if (!mwifiex_is_bss_in_11ac_mode(priv)) {
264 		if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
265 		   WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
266 			mwifiex_dbg(adapter, WARN,
267 				    "TDLS peer doesn't support wider bandwidth\n");
268 			return 0;
269 		}
270 	} else {
271 		ap_vht_cap = bss_desc->bcn_vht_cap;
272 	}
273 
274 	pos = skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
275 	*pos++ = WLAN_EID_VHT_OPERATION;
276 	*pos++ = sizeof(struct ieee80211_vht_operation);
277 	vht_oper = (struct ieee80211_vht_operation *)pos;
278 
279 	if (bss_desc->bss_band & BAND_A)
280 		usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
281 	else
282 		usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
283 
284 	/* find the minimum bandwidth between AP/TDLS peers */
285 	vht_cap = &sta_ptr->tdls_cap.vhtcap;
286 	supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
287 	peer_supp_chwd_set =
288 			 GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
289 	supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
290 
291 	/* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */
292 
293 	if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
294 	    WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
295 		ap_supp_chwd_set =
296 		      GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
297 		supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
298 	}
299 
300 	switch (supp_chwd_set) {
301 	case IEEE80211_VHT_CHANWIDTH_80MHZ:
302 		vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
303 		break;
304 	case IEEE80211_VHT_CHANWIDTH_160MHZ:
305 		vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
306 		break;
307 	case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
308 		vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
309 		break;
310 	default:
311 		vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
312 		break;
313 	}
314 
315 	mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
316 	mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
317 	mcs_map_result = 0;
318 
319 	for (nss = 1; nss <= 8; nss++) {
320 		mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
321 		mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
322 
323 		if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
324 		    (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
325 			SET_VHTNSSMCS(mcs_map_result, nss,
326 				      IEEE80211_VHT_MCS_NOT_SUPPORTED);
327 		else
328 			SET_VHTNSSMCS(mcs_map_result, nss,
329 				      min_t(u16, mcs_user, mcs_resp));
330 	}
331 
332 	vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
333 
334 	switch (vht_oper->chan_width) {
335 	case IEEE80211_VHT_CHANWIDTH_80MHZ:
336 		chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
337 		break;
338 	case IEEE80211_VHT_CHANWIDTH_160MHZ:
339 		chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
340 		break;
341 	case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
342 		chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
343 		break;
344 	default:
345 		chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
346 		break;
347 	}
348 	vht_oper->center_freq_seg0_idx =
349 			mwifiex_get_center_freq_index(priv, BAND_AAC,
350 						      bss_desc->channel,
351 						      chan_bw);
352 
353 	return 0;
354 }
355 
mwifiex_tdls_add_ext_capab(struct mwifiex_private * priv,struct sk_buff * skb)356 static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
357 				       struct sk_buff *skb)
358 {
359 	struct ieee_types_extcap *extcap;
360 
361 	extcap = skb_put(skb, sizeof(struct ieee_types_extcap));
362 	extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
363 	extcap->ieee_hdr.len = 8;
364 	memset(extcap->ext_capab, 0, 8);
365 	extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
366 	extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH;
367 
368 	if (priv->adapter->is_hw_11ac_capable)
369 		extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
370 }
371 
mwifiex_tdls_add_qos_capab(struct sk_buff * skb)372 static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
373 {
374 	u8 *pos = skb_put(skb, 3);
375 
376 	*pos++ = WLAN_EID_QOS_CAPA;
377 	*pos++ = 1;
378 	*pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
379 }
380 
381 static void
mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private * priv,struct sk_buff * skb)382 mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb)
383 {
384 	struct ieee80211_wmm_param_ie *wmm;
385 	u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00};
386 	u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00};
387 	u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00};
388 	u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00};
389 
390 	wmm = skb_put_zero(skb, sizeof(*wmm));
391 
392 	wmm->element_id = WLAN_EID_VENDOR_SPECIFIC;
393 	wmm->len = sizeof(*wmm) - 2;
394 	wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */
395 	wmm->oui[1] = 0x50;
396 	wmm->oui[2] = 0xf2;
397 	wmm->oui_type = 2; /* WME */
398 	wmm->oui_subtype = 1; /* WME param */
399 	wmm->version = 1; /* WME ver */
400 	wmm->qos_info = 0; /* U-APSD not in use */
401 
402 	/* use default WMM AC parameters for TDLS link*/
403 	memcpy(&wmm->ac[0], ac_be, sizeof(ac_be));
404 	memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk));
405 	memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi));
406 	memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo));
407 }
408 
409 static void
mwifiex_add_wmm_info_ie(struct mwifiex_private * priv,struct sk_buff * skb,u8 qosinfo)410 mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb,
411 			u8 qosinfo)
412 {
413 	u8 *buf;
414 
415 	buf = skb_put(skb,
416 		      MWIFIEX_TDLS_WMM_INFO_SIZE + sizeof(struct ieee_types_header));
417 
418 	*buf++ = WLAN_EID_VENDOR_SPECIFIC;
419 	*buf++ = 7; /* len */
420 	*buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
421 	*buf++ = 0x50;
422 	*buf++ = 0xf2;
423 	*buf++ = 2; /* WME */
424 	*buf++ = 0; /* WME info */
425 	*buf++ = 1; /* WME ver */
426 	*buf++ = qosinfo; /* U-APSD no in use */
427 }
428 
mwifiex_tdls_add_bss_co_2040(struct sk_buff * skb)429 static void mwifiex_tdls_add_bss_co_2040(struct sk_buff *skb)
430 {
431 	struct ieee_types_bss_co_2040 *bssco;
432 
433 	bssco = skb_put(skb, sizeof(struct ieee_types_bss_co_2040));
434 	bssco->ieee_hdr.element_id = WLAN_EID_BSS_COEX_2040;
435 	bssco->ieee_hdr.len = sizeof(struct ieee_types_bss_co_2040) -
436 			      sizeof(struct ieee_types_header);
437 	bssco->bss_2040co = 0x01;
438 }
439 
mwifiex_tdls_add_supported_chan(struct sk_buff * skb)440 static void mwifiex_tdls_add_supported_chan(struct sk_buff *skb)
441 {
442 	struct ieee_types_generic *supp_chan;
443 	u8 chan_supp[] = {1, 11};
444 
445 	supp_chan = skb_put(skb,
446 			    (sizeof(struct ieee_types_header) + sizeof(chan_supp)));
447 	supp_chan->ieee_hdr.element_id = WLAN_EID_SUPPORTED_CHANNELS;
448 	supp_chan->ieee_hdr.len = sizeof(chan_supp);
449 	memcpy(supp_chan->data, chan_supp, sizeof(chan_supp));
450 }
451 
mwifiex_tdls_add_oper_class(struct sk_buff * skb)452 static void mwifiex_tdls_add_oper_class(struct sk_buff *skb)
453 {
454 	struct ieee_types_generic *reg_class;
455 	u8 rc_list[] = {1,
456 		1, 2, 3, 4, 12, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33};
457 	reg_class = skb_put(skb,
458 			    (sizeof(struct ieee_types_header) + sizeof(rc_list)));
459 	reg_class->ieee_hdr.element_id = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
460 	reg_class->ieee_hdr.len = sizeof(rc_list);
461 	memcpy(reg_class->data, rc_list, sizeof(rc_list));
462 }
463 
mwifiex_prep_tdls_encap_data(struct mwifiex_private * priv,const u8 * peer,u8 action_code,u8 dialog_token,u16 status_code,struct sk_buff * skb)464 static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
465 					const u8 *peer, u8 action_code,
466 					u8 dialog_token,
467 					u16 status_code, struct sk_buff *skb)
468 {
469 	struct ieee80211_tdls_data *tf;
470 	int ret;
471 	u16 capab;
472 	struct ieee80211_ht_cap *ht_cap;
473 	u8 radio, *pos;
474 
475 	capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
476 
477 	tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
478 	memcpy(tf->da, peer, ETH_ALEN);
479 	memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
480 	tf->ether_type = cpu_to_be16(ETH_P_TDLS);
481 	tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
482 
483 	switch (action_code) {
484 	case WLAN_TDLS_SETUP_REQUEST:
485 		tf->category = WLAN_CATEGORY_TDLS;
486 		tf->action_code = WLAN_TDLS_SETUP_REQUEST;
487 		skb_put(skb, sizeof(tf->u.setup_req));
488 		tf->u.setup_req.dialog_token = dialog_token;
489 		tf->u.setup_req.capability = cpu_to_le16(capab);
490 		ret = mwifiex_tdls_append_rates_ie(priv, skb);
491 		if (ret) {
492 			dev_kfree_skb_any(skb);
493 			return ret;
494 		}
495 
496 		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
497 		*pos++ = WLAN_EID_HT_CAPABILITY;
498 		*pos++ = sizeof(struct ieee80211_ht_cap);
499 		ht_cap = (void *)pos;
500 		radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
501 		ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
502 		if (ret) {
503 			dev_kfree_skb_any(skb);
504 			return ret;
505 		}
506 
507 		if (priv->adapter->is_hw_11ac_capable) {
508 			ret = mwifiex_tdls_add_vht_capab(priv, skb);
509 			if (ret) {
510 				dev_kfree_skb_any(skb);
511 				return ret;
512 			}
513 			mwifiex_tdls_add_aid(priv, skb);
514 		}
515 
516 		mwifiex_tdls_add_ext_capab(priv, skb);
517 		mwifiex_tdls_add_bss_co_2040(skb);
518 		mwifiex_tdls_add_supported_chan(skb);
519 		mwifiex_tdls_add_oper_class(skb);
520 		mwifiex_add_wmm_info_ie(priv, skb, 0);
521 		break;
522 
523 	case WLAN_TDLS_SETUP_RESPONSE:
524 		tf->category = WLAN_CATEGORY_TDLS;
525 		tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
526 		skb_put(skb, sizeof(tf->u.setup_resp));
527 		tf->u.setup_resp.status_code = cpu_to_le16(status_code);
528 		tf->u.setup_resp.dialog_token = dialog_token;
529 		tf->u.setup_resp.capability = cpu_to_le16(capab);
530 		ret = mwifiex_tdls_append_rates_ie(priv, skb);
531 		if (ret) {
532 			dev_kfree_skb_any(skb);
533 			return ret;
534 		}
535 
536 		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
537 		*pos++ = WLAN_EID_HT_CAPABILITY;
538 		*pos++ = sizeof(struct ieee80211_ht_cap);
539 		ht_cap = (void *)pos;
540 		radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
541 		ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
542 		if (ret) {
543 			dev_kfree_skb_any(skb);
544 			return ret;
545 		}
546 
547 		if (priv->adapter->is_hw_11ac_capable) {
548 			ret = mwifiex_tdls_add_vht_capab(priv, skb);
549 			if (ret) {
550 				dev_kfree_skb_any(skb);
551 				return ret;
552 			}
553 			mwifiex_tdls_add_aid(priv, skb);
554 		}
555 
556 		mwifiex_tdls_add_ext_capab(priv, skb);
557 		mwifiex_tdls_add_bss_co_2040(skb);
558 		mwifiex_tdls_add_supported_chan(skb);
559 		mwifiex_tdls_add_oper_class(skb);
560 		mwifiex_add_wmm_info_ie(priv, skb, 0);
561 		break;
562 
563 	case WLAN_TDLS_SETUP_CONFIRM:
564 		tf->category = WLAN_CATEGORY_TDLS;
565 		tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
566 		skb_put(skb, sizeof(tf->u.setup_cfm));
567 		tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
568 		tf->u.setup_cfm.dialog_token = dialog_token;
569 
570 		mwifiex_tdls_add_wmm_param_ie(priv, skb);
571 		if (priv->adapter->is_hw_11ac_capable) {
572 			ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
573 			if (ret) {
574 				dev_kfree_skb_any(skb);
575 				return ret;
576 			}
577 			ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
578 			if (ret) {
579 				dev_kfree_skb_any(skb);
580 				return ret;
581 			}
582 		} else {
583 			ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
584 			if (ret) {
585 				dev_kfree_skb_any(skb);
586 				return ret;
587 			}
588 		}
589 		break;
590 
591 	case WLAN_TDLS_TEARDOWN:
592 		tf->category = WLAN_CATEGORY_TDLS;
593 		tf->action_code = WLAN_TDLS_TEARDOWN;
594 		skb_put(skb, sizeof(tf->u.teardown));
595 		tf->u.teardown.reason_code = cpu_to_le16(status_code);
596 		break;
597 
598 	case WLAN_TDLS_DISCOVERY_REQUEST:
599 		tf->category = WLAN_CATEGORY_TDLS;
600 		tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
601 		skb_put(skb, sizeof(tf->u.discover_req));
602 		tf->u.discover_req.dialog_token = dialog_token;
603 		break;
604 	default:
605 		mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
606 		return -EINVAL;
607 	}
608 
609 	return 0;
610 }
611 
612 static void
mwifiex_tdls_add_link_ie(struct sk_buff * skb,const u8 * src_addr,const u8 * peer,const u8 * bssid)613 mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
614 			 const u8 *peer, const u8 *bssid)
615 {
616 	struct ieee80211_tdls_lnkie *lnkid;
617 
618 	lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
619 	lnkid->ie_type = WLAN_EID_LINK_ID;
620 	lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
621 			sizeof(struct ieee_types_header);
622 
623 	memcpy(lnkid->bssid, bssid, ETH_ALEN);
624 	memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
625 	memcpy(lnkid->resp_sta, peer, ETH_ALEN);
626 }
627 
mwifiex_send_tdls_data_frame(struct mwifiex_private * priv,const u8 * peer,u8 action_code,u8 dialog_token,u16 status_code,const u8 * extra_ies,size_t extra_ies_len)628 int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
629 				 u8 action_code, u8 dialog_token,
630 				 u16 status_code, const u8 *extra_ies,
631 				 size_t extra_ies_len)
632 {
633 	struct sk_buff *skb;
634 	struct mwifiex_txinfo *tx_info;
635 	int ret;
636 	u16 skb_len;
637 
638 	skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
639 		  max(sizeof(struct ieee80211_mgmt),
640 		      sizeof(struct ieee80211_tdls_data)) +
641 		  MWIFIEX_MGMT_FRAME_HEADER_SIZE +
642 		  MWIFIEX_SUPPORTED_RATES +
643 		  3 + /* Qos Info */
644 		  sizeof(struct ieee_types_extcap) +
645 		  sizeof(struct ieee80211_ht_cap) +
646 		  sizeof(struct ieee_types_bss_co_2040) +
647 		  sizeof(struct ieee80211_ht_operation) +
648 		  sizeof(struct ieee80211_tdls_lnkie) +
649 		  (2 * (sizeof(struct ieee_types_header))) +
650 		   MWIFIEX_SUPPORTED_CHANNELS +
651 		   MWIFIEX_OPERATING_CLASSES +
652 		  sizeof(struct ieee80211_wmm_param_ie) +
653 		  extra_ies_len;
654 
655 	if (priv->adapter->is_hw_11ac_capable)
656 		skb_len += sizeof(struct ieee_types_vht_cap) +
657 			   sizeof(struct ieee_types_vht_oper) +
658 			   sizeof(struct ieee_types_aid);
659 
660 	skb = dev_alloc_skb(skb_len);
661 	if (!skb) {
662 		mwifiex_dbg(priv->adapter, ERROR,
663 			    "allocate skb failed for management frame\n");
664 		return -ENOMEM;
665 	}
666 	skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
667 
668 	switch (action_code) {
669 	case WLAN_TDLS_SETUP_REQUEST:
670 	case WLAN_TDLS_SETUP_CONFIRM:
671 	case WLAN_TDLS_TEARDOWN:
672 	case WLAN_TDLS_DISCOVERY_REQUEST:
673 		ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
674 						   dialog_token, status_code,
675 						   skb);
676 		if (ret) {
677 			dev_kfree_skb_any(skb);
678 			return ret;
679 		}
680 		if (extra_ies_len)
681 			skb_put_data(skb, extra_ies, extra_ies_len);
682 		mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
683 					 priv->cfg_bssid);
684 		break;
685 	case WLAN_TDLS_SETUP_RESPONSE:
686 		ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
687 						   dialog_token, status_code,
688 						   skb);
689 		if (ret) {
690 			dev_kfree_skb_any(skb);
691 			return ret;
692 		}
693 		if (extra_ies_len)
694 			skb_put_data(skb, extra_ies, extra_ies_len);
695 		mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
696 					 priv->cfg_bssid);
697 		break;
698 	}
699 
700 	switch (action_code) {
701 	case WLAN_TDLS_SETUP_REQUEST:
702 	case WLAN_TDLS_SETUP_RESPONSE:
703 		skb->priority = MWIFIEX_PRIO_BK;
704 		break;
705 	default:
706 		skb->priority = MWIFIEX_PRIO_VI;
707 		break;
708 	}
709 
710 	tx_info = MWIFIEX_SKB_TXCB(skb);
711 	memset(tx_info, 0, sizeof(*tx_info));
712 	tx_info->bss_num = priv->bss_num;
713 	tx_info->bss_type = priv->bss_type;
714 
715 	__net_timestamp(skb);
716 	mwifiex_queue_tx_pkt(priv, skb);
717 
718 	/* Delay 10ms to make sure tdls setup confirm/teardown frame
719 	 * is received by peer
720 	*/
721 	if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
722 	    action_code == WLAN_TDLS_TEARDOWN)
723 		msleep_interruptible(10);
724 
725 	return 0;
726 }
727 
728 static int
mwifiex_construct_tdls_action_frame(struct mwifiex_private * priv,const u8 * peer,u8 action_code,u8 dialog_token,u16 status_code,struct sk_buff * skb)729 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
730 				    const u8 *peer,
731 				    u8 action_code, u8 dialog_token,
732 				    u16 status_code, struct sk_buff *skb)
733 {
734 	struct ieee80211_mgmt *mgmt;
735 	int ret;
736 	u16 capab;
737 	struct ieee80211_ht_cap *ht_cap;
738 	u8 radio, *pos;
739 
740 	capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
741 
742 	mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u));
743 
744 	memset(mgmt, 0, 24);
745 	memcpy(mgmt->da, peer, ETH_ALEN);
746 	memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
747 	memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
748 	mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
749 					  IEEE80211_STYPE_ACTION);
750 
751 	/* add address 4 */
752 	pos = skb_put(skb, ETH_ALEN);
753 
754 	switch (action_code) {
755 	case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
756 		skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
757 		mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
758 		mgmt->u.action.u.tdls_discover_resp.action_code =
759 					      WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
760 		mgmt->u.action.u.tdls_discover_resp.dialog_token =
761 								   dialog_token;
762 		mgmt->u.action.u.tdls_discover_resp.capability =
763 							     cpu_to_le16(capab);
764 		/* move back for addr4 */
765 		memmove(pos + ETH_ALEN, &mgmt->u.action.category,
766 			sizeof(mgmt->u.action.u.tdls_discover_resp));
767 		/* init address 4 */
768 		eth_broadcast_addr(pos);
769 
770 		ret = mwifiex_tdls_append_rates_ie(priv, skb);
771 		if (ret) {
772 			dev_kfree_skb_any(skb);
773 			return ret;
774 		}
775 
776 		pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
777 		*pos++ = WLAN_EID_HT_CAPABILITY;
778 		*pos++ = sizeof(struct ieee80211_ht_cap);
779 		ht_cap = (void *)pos;
780 		radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
781 		ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
782 		if (ret) {
783 			dev_kfree_skb_any(skb);
784 			return ret;
785 		}
786 
787 		if (priv->adapter->is_hw_11ac_capable) {
788 			ret = mwifiex_tdls_add_vht_capab(priv, skb);
789 			if (ret) {
790 				dev_kfree_skb_any(skb);
791 				return ret;
792 			}
793 			mwifiex_tdls_add_aid(priv, skb);
794 		}
795 
796 		mwifiex_tdls_add_ext_capab(priv, skb);
797 		mwifiex_tdls_add_bss_co_2040(skb);
798 		mwifiex_tdls_add_supported_chan(skb);
799 		mwifiex_tdls_add_qos_capab(skb);
800 		mwifiex_tdls_add_oper_class(skb);
801 		break;
802 	default:
803 		mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
804 		return -EINVAL;
805 	}
806 
807 	return 0;
808 }
809 
mwifiex_send_tdls_action_frame(struct mwifiex_private * priv,const u8 * peer,u8 action_code,u8 dialog_token,u16 status_code,const u8 * extra_ies,size_t extra_ies_len)810 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
811 				   u8 action_code, u8 dialog_token,
812 				   u16 status_code, const u8 *extra_ies,
813 				   size_t extra_ies_len)
814 {
815 	struct sk_buff *skb;
816 	struct mwifiex_txinfo *tx_info;
817 	u8 *pos;
818 	u32 pkt_type, tx_control;
819 	u16 pkt_len, skb_len;
820 
821 	skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
822 		  max(sizeof(struct ieee80211_mgmt),
823 		      sizeof(struct ieee80211_tdls_data)) +
824 		  MWIFIEX_MGMT_FRAME_HEADER_SIZE +
825 		  MWIFIEX_SUPPORTED_RATES +
826 		  sizeof(struct ieee_types_extcap) +
827 		  sizeof(struct ieee80211_ht_cap) +
828 		  sizeof(struct ieee_types_bss_co_2040) +
829 		  sizeof(struct ieee80211_ht_operation) +
830 		  sizeof(struct ieee80211_tdls_lnkie) +
831 		  extra_ies_len +
832 		  3 + /* Qos Info */
833 		  ETH_ALEN; /* Address4 */
834 
835 	if (priv->adapter->is_hw_11ac_capable)
836 		skb_len += sizeof(struct ieee_types_vht_cap) +
837 			   sizeof(struct ieee_types_vht_oper) +
838 			   sizeof(struct ieee_types_aid);
839 
840 	skb = dev_alloc_skb(skb_len);
841 	if (!skb) {
842 		mwifiex_dbg(priv->adapter, ERROR,
843 			    "allocate skb failed for management frame\n");
844 		return -ENOMEM;
845 	}
846 
847 	skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
848 
849 	pkt_type = PKT_TYPE_MGMT;
850 	tx_control = 0;
851 	pos = skb_put_zero(skb,
852 			   MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
853 	memcpy(pos, &pkt_type, sizeof(pkt_type));
854 	memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
855 
856 	if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
857 						dialog_token, status_code,
858 						skb)) {
859 		dev_kfree_skb_any(skb);
860 		return -EINVAL;
861 	}
862 
863 	if (extra_ies_len)
864 		skb_put_data(skb, extra_ies, extra_ies_len);
865 
866 	/* the TDLS link IE is always added last we are the responder */
867 
868 	mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
869 				 priv->cfg_bssid);
870 
871 	skb->priority = MWIFIEX_PRIO_VI;
872 
873 	tx_info = MWIFIEX_SKB_TXCB(skb);
874 	memset(tx_info, 0, sizeof(*tx_info));
875 	tx_info->bss_num = priv->bss_num;
876 	tx_info->bss_type = priv->bss_type;
877 	tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
878 
879 	pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
880 	memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
881 	       sizeof(pkt_len));
882 	__net_timestamp(skb);
883 	mwifiex_queue_tx_pkt(priv, skb);
884 
885 	return 0;
886 }
887 
888 /* This function process tdls action frame from peer.
889  * Peer capabilities are stored into station node structure.
890  */
mwifiex_process_tdls_action_frame(struct mwifiex_private * priv,u8 * buf,int len)891 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
892 				       u8 *buf, int len)
893 {
894 	struct mwifiex_sta_node *sta_ptr;
895 	u8 *peer, *pos, *end;
896 	u8 i, action, basic;
897 	u16 cap = 0;
898 	int ies_len = 0;
899 
900 	if (len < (sizeof(struct ethhdr) + 3))
901 		return;
902 	if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
903 		return;
904 	if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
905 		return;
906 
907 	peer = buf + ETH_ALEN;
908 	action = *(buf + sizeof(struct ethhdr) + 2);
909 	mwifiex_dbg(priv->adapter, DATA,
910 		    "rx:tdls action: peer=%pM, action=%d\n", peer, action);
911 
912 	switch (action) {
913 	case WLAN_TDLS_SETUP_REQUEST:
914 		if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
915 			return;
916 
917 		pos = buf + sizeof(struct ethhdr) + 4;
918 		/* payload 1+ category 1 + action 1 + dialog 1 */
919 		cap = get_unaligned_le16(pos);
920 		ies_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
921 		pos += 2;
922 		break;
923 
924 	case WLAN_TDLS_SETUP_RESPONSE:
925 		if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
926 			return;
927 		/* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
928 		pos = buf + sizeof(struct ethhdr) + 6;
929 		cap = get_unaligned_le16(pos);
930 		ies_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
931 		pos += 2;
932 		break;
933 
934 	case WLAN_TDLS_SETUP_CONFIRM:
935 		if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
936 			return;
937 		pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
938 		ies_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
939 		break;
940 	default:
941 		mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
942 		return;
943 	}
944 
945 	sta_ptr = mwifiex_add_sta_entry(priv, peer);
946 	if (!sta_ptr)
947 		return;
948 
949 	sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
950 
951 	for (end = pos + ies_len; pos + 1 < end; pos += 2 + pos[1]) {
952 		u8 ie_len = pos[1];
953 
954 		if (pos + 2 + ie_len > end)
955 			break;
956 
957 		switch (*pos) {
958 		case WLAN_EID_SUPP_RATES:
959 			if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
960 				return;
961 			sta_ptr->tdls_cap.rates_len = ie_len;
962 			for (i = 0; i < ie_len; i++)
963 				sta_ptr->tdls_cap.rates[i] = pos[i + 2];
964 			break;
965 
966 		case WLAN_EID_EXT_SUPP_RATES:
967 			if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
968 				return;
969 			basic = sta_ptr->tdls_cap.rates_len;
970 			if (ie_len > sizeof(sta_ptr->tdls_cap.rates) - basic)
971 				return;
972 			for (i = 0; i < ie_len; i++)
973 				sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
974 			sta_ptr->tdls_cap.rates_len += ie_len;
975 			break;
976 		case WLAN_EID_HT_CAPABILITY:
977 			if (ie_len != sizeof(struct ieee80211_ht_cap))
978 				return;
979 			/* copy the ie's value into ht_capb*/
980 			memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos + 2,
981 			       sizeof(struct ieee80211_ht_cap));
982 			sta_ptr->is_11n_enabled = 1;
983 			break;
984 		case WLAN_EID_HT_OPERATION:
985 			if (ie_len != sizeof(struct ieee80211_ht_operation))
986 				return;
987 			/* copy the ie's value into ht_oper*/
988 			memcpy(&sta_ptr->tdls_cap.ht_oper, pos + 2,
989 			       sizeof(struct ieee80211_ht_operation));
990 			break;
991 		case WLAN_EID_BSS_COEX_2040:
992 			if (ie_len != sizeof(pos[2]))
993 				return;
994 			sta_ptr->tdls_cap.coex_2040 = pos[2];
995 			break;
996 		case WLAN_EID_EXT_CAPABILITY:
997 			if (ie_len < sizeof(struct ieee_types_header))
998 				return;
999 			if (ie_len > 8)
1000 				return;
1001 			memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
1002 			       sizeof(struct ieee_types_header) +
1003 			       min_t(u8, ie_len, 8));
1004 			break;
1005 		case WLAN_EID_RSN:
1006 			if (ie_len < sizeof(struct ieee_types_header))
1007 				return;
1008 			if (ie_len > IEEE_MAX_IE_SIZE -
1009 			    sizeof(struct ieee_types_header))
1010 				return;
1011 			memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
1012 			       sizeof(struct ieee_types_header) +
1013 			       min_t(u8, ie_len, IEEE_MAX_IE_SIZE -
1014 				     sizeof(struct ieee_types_header)));
1015 			break;
1016 		case WLAN_EID_QOS_CAPA:
1017 			if (ie_len != sizeof(pos[2]))
1018 				return;
1019 			sta_ptr->tdls_cap.qos_info = pos[2];
1020 			break;
1021 		case WLAN_EID_VHT_OPERATION:
1022 			if (priv->adapter->is_hw_11ac_capable) {
1023 				if (ie_len !=
1024 				    sizeof(struct ieee80211_vht_operation))
1025 					return;
1026 				/* copy the ie's value into vhtoper*/
1027 				memcpy(&sta_ptr->tdls_cap.vhtoper, pos + 2,
1028 				       sizeof(struct ieee80211_vht_operation));
1029 			}
1030 			break;
1031 		case WLAN_EID_VHT_CAPABILITY:
1032 			if (priv->adapter->is_hw_11ac_capable) {
1033 				if (ie_len != sizeof(struct ieee80211_vht_cap))
1034 					return;
1035 				/* copy the ie's value into vhtcap*/
1036 				memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos + 2,
1037 				       sizeof(struct ieee80211_vht_cap));
1038 				sta_ptr->is_11ac_enabled = 1;
1039 			}
1040 			break;
1041 		case WLAN_EID_AID:
1042 			if (priv->adapter->is_hw_11ac_capable) {
1043 				if (ie_len != sizeof(u16))
1044 					return;
1045 				sta_ptr->tdls_cap.aid =
1046 					get_unaligned_le16((pos + 2));
1047 			}
1048 			break;
1049 		default:
1050 			break;
1051 		}
1052 	}
1053 
1054 	return;
1055 }
1056 
1057 static int
mwifiex_tdls_process_config_link(struct mwifiex_private * priv,const u8 * peer)1058 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1059 {
1060 	struct mwifiex_sta_node *sta_ptr;
1061 	struct mwifiex_ds_tdls_oper tdls_oper;
1062 
1063 	memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1064 	sta_ptr = mwifiex_get_sta_entry(priv, peer);
1065 
1066 	if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1067 		mwifiex_dbg(priv->adapter, ERROR,
1068 			    "link absent for peer %pM; cannot config\n", peer);
1069 		return -EINVAL;
1070 	}
1071 
1072 	memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1073 	tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1074 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1075 				HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1076 }
1077 
1078 static int
mwifiex_tdls_process_create_link(struct mwifiex_private * priv,const u8 * peer)1079 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1080 {
1081 	struct mwifiex_sta_node *sta_ptr;
1082 	struct mwifiex_ds_tdls_oper tdls_oper;
1083 
1084 	memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1085 	sta_ptr = mwifiex_get_sta_entry(priv, peer);
1086 
1087 	if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1088 		mwifiex_dbg(priv->adapter, WARN,
1089 			    "Setup already in progress for peer %pM\n", peer);
1090 		return 0;
1091 	}
1092 
1093 	sta_ptr = mwifiex_add_sta_entry(priv, peer);
1094 	if (!sta_ptr)
1095 		return -ENOMEM;
1096 
1097 	sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1098 	mwifiex_hold_tdls_packets(priv, peer);
1099 	memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1100 	tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1101 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1102 				HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1103 }
1104 
1105 static int
mwifiex_tdls_process_disable_link(struct mwifiex_private * priv,const u8 * peer)1106 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1107 {
1108 	struct mwifiex_sta_node *sta_ptr;
1109 	struct mwifiex_ds_tdls_oper tdls_oper;
1110 
1111 	memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1112 	sta_ptr = mwifiex_get_sta_entry(priv, peer);
1113 
1114 	if (sta_ptr) {
1115 		if (sta_ptr->is_11n_enabled) {
1116 			mwifiex_11n_cleanup_reorder_tbl(priv);
1117 			spin_lock_bh(&priv->wmm.ra_list_spinlock);
1118 			mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1119 			spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1120 		}
1121 		mwifiex_del_sta_entry(priv, peer);
1122 	}
1123 
1124 	mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1125 	mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1126 	memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1127 	tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1128 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1129 				HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1130 }
1131 
1132 static int
mwifiex_tdls_process_enable_link(struct mwifiex_private * priv,const u8 * peer)1133 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1134 {
1135 	struct mwifiex_sta_node *sta_ptr;
1136 	struct ieee80211_mcs_info mcs;
1137 	int i;
1138 
1139 	sta_ptr = mwifiex_get_sta_entry(priv, peer);
1140 
1141 	if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1142 		mwifiex_dbg(priv->adapter, MSG,
1143 			    "tdls: enable link %pM success\n", peer);
1144 
1145 		sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1146 
1147 		mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1148 		if (mcs.rx_mask[0] != 0xff)
1149 			sta_ptr->is_11n_enabled = true;
1150 		if (sta_ptr->is_11n_enabled) {
1151 			if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1152 			    IEEE80211_HT_CAP_MAX_AMSDU)
1153 				sta_ptr->max_amsdu =
1154 					MWIFIEX_TX_DATA_BUF_SIZE_8K;
1155 			else
1156 				sta_ptr->max_amsdu =
1157 					MWIFIEX_TX_DATA_BUF_SIZE_4K;
1158 
1159 			for (i = 0; i < MAX_NUM_TID; i++)
1160 				sta_ptr->ampdu_sta[i] =
1161 					      priv->aggr_prio_tbl[i].ampdu_user;
1162 		} else {
1163 			for (i = 0; i < MAX_NUM_TID; i++)
1164 				sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1165 		}
1166 		if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1167 		    WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1168 			mwifiex_config_tdls_enable(priv);
1169 			mwifiex_config_tdls_cs_params(priv);
1170 		}
1171 
1172 		memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1173 		mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1174 		mwifiex_auto_tdls_update_peer_status(priv, peer,
1175 						     TDLS_SETUP_COMPLETE);
1176 	} else {
1177 		mwifiex_dbg(priv->adapter, ERROR,
1178 			    "tdls: enable link %pM failed\n", peer);
1179 		if (sta_ptr) {
1180 			mwifiex_11n_cleanup_reorder_tbl(priv);
1181 			spin_lock_bh(&priv->wmm.ra_list_spinlock);
1182 			mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1183 			spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1184 			mwifiex_del_sta_entry(priv, peer);
1185 		}
1186 		mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1187 		mwifiex_auto_tdls_update_peer_status(priv, peer,
1188 						     TDLS_NOT_SETUP);
1189 
1190 		return -1;
1191 	}
1192 
1193 	return 0;
1194 }
1195 
mwifiex_tdls_oper(struct mwifiex_private * priv,const u8 * peer,u8 action)1196 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1197 {
1198 	switch (action) {
1199 	case MWIFIEX_TDLS_ENABLE_LINK:
1200 		return mwifiex_tdls_process_enable_link(priv, peer);
1201 	case MWIFIEX_TDLS_DISABLE_LINK:
1202 		return mwifiex_tdls_process_disable_link(priv, peer);
1203 	case MWIFIEX_TDLS_CREATE_LINK:
1204 		return mwifiex_tdls_process_create_link(priv, peer);
1205 	case MWIFIEX_TDLS_CONFIG_LINK:
1206 		return mwifiex_tdls_process_config_link(priv, peer);
1207 	}
1208 	return 0;
1209 }
1210 
mwifiex_get_tdls_link_status(struct mwifiex_private * priv,const u8 * mac)1211 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1212 {
1213 	struct mwifiex_sta_node *sta_ptr;
1214 
1215 	sta_ptr = mwifiex_get_sta_entry(priv, mac);
1216 	if (sta_ptr)
1217 		return sta_ptr->tdls_status;
1218 
1219 	return TDLS_NOT_SETUP;
1220 }
1221 
mwifiex_get_tdls_list(struct mwifiex_private * priv,struct tdls_peer_info * buf)1222 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1223 			  struct tdls_peer_info *buf)
1224 {
1225 	struct mwifiex_sta_node *sta_ptr;
1226 	struct tdls_peer_info *peer = buf;
1227 	int count = 0;
1228 
1229 	if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1230 		return 0;
1231 
1232 	/* make sure we are in station mode and connected */
1233 	if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1234 		return 0;
1235 
1236 	spin_lock_bh(&priv->sta_list_spinlock);
1237 	list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1238 		if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1239 			ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1240 			peer++;
1241 			count++;
1242 			if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1243 				break;
1244 		}
1245 	}
1246 	spin_unlock_bh(&priv->sta_list_spinlock);
1247 
1248 	return count;
1249 }
1250 
mwifiex_disable_all_tdls_links(struct mwifiex_private * priv)1251 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1252 {
1253 	struct mwifiex_sta_node *sta_ptr;
1254 	struct mwifiex_ds_tdls_oper tdls_oper;
1255 
1256 	if (list_empty(&priv->sta_list))
1257 		return;
1258 
1259 	list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1260 		memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1261 
1262 		if (sta_ptr->is_11n_enabled) {
1263 			mwifiex_11n_cleanup_reorder_tbl(priv);
1264 			spin_lock_bh(&priv->wmm.ra_list_spinlock);
1265 			mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1266 			spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1267 		}
1268 
1269 		mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1270 					     TDLS_LINK_TEARDOWN);
1271 		memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1272 		tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1273 		if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1274 				     HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1275 			mwifiex_dbg(priv->adapter, ERROR,
1276 				    "Disable link failed for TDLS peer %pM",
1277 				    sta_ptr->mac_addr);
1278 	}
1279 
1280 	mwifiex_del_all_sta_list(priv);
1281 }
1282 
mwifiex_tdls_check_tx(struct mwifiex_private * priv,struct sk_buff * skb)1283 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1284 {
1285 	struct mwifiex_auto_tdls_peer *peer;
1286 	u8 mac[ETH_ALEN];
1287 
1288 	ether_addr_copy(mac, skb->data);
1289 
1290 	spin_lock_bh(&priv->auto_tdls_lock);
1291 	list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1292 		if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1293 			if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1294 			    peer->tdls_status == TDLS_NOT_SETUP &&
1295 			    (peer->failure_count <
1296 			     MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1297 				peer->tdls_status = TDLS_SETUP_INPROGRESS;
1298 				mwifiex_dbg(priv->adapter, INFO,
1299 					    "setup TDLS link, peer=%pM rssi=%d\n",
1300 					    peer->mac_addr, peer->rssi);
1301 
1302 				cfg80211_tdls_oper_request(priv->netdev,
1303 							   peer->mac_addr,
1304 							   NL80211_TDLS_SETUP,
1305 							   0, GFP_ATOMIC);
1306 				peer->do_setup = false;
1307 				priv->check_tdls_tx = false;
1308 			} else if (peer->failure_count <
1309 				   MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1310 				   peer->do_discover) {
1311 				mwifiex_send_tdls_data_frame(priv,
1312 							     peer->mac_addr,
1313 						    WLAN_TDLS_DISCOVERY_REQUEST,
1314 							     1, 0, NULL, 0);
1315 				peer->do_discover = false;
1316 			}
1317 		}
1318 	}
1319 	spin_unlock_bh(&priv->auto_tdls_lock);
1320 
1321 	return 0;
1322 }
1323 
mwifiex_flush_auto_tdls_list(struct mwifiex_private * priv)1324 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1325 {
1326 	struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1327 
1328 	spin_lock_bh(&priv->auto_tdls_lock);
1329 	list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1330 		list_del(&peer->list);
1331 		kfree(peer);
1332 	}
1333 
1334 	INIT_LIST_HEAD(&priv->auto_tdls_list);
1335 	spin_unlock_bh(&priv->auto_tdls_lock);
1336 	priv->check_tdls_tx = false;
1337 }
1338 
mwifiex_add_auto_tdls_peer(struct mwifiex_private * priv,const u8 * mac)1339 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1340 {
1341 	struct mwifiex_auto_tdls_peer *tdls_peer;
1342 
1343 	if (!priv->adapter->auto_tdls)
1344 		return;
1345 
1346 	spin_lock_bh(&priv->auto_tdls_lock);
1347 	list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1348 		if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1349 			tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1350 			tdls_peer->rssi_jiffies = jiffies;
1351 			spin_unlock_bh(&priv->auto_tdls_lock);
1352 			return;
1353 		}
1354 	}
1355 
1356 	/* create new TDLS peer */
1357 	tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1358 	if (tdls_peer) {
1359 		ether_addr_copy(tdls_peer->mac_addr, mac);
1360 		tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1361 		tdls_peer->rssi_jiffies = jiffies;
1362 		INIT_LIST_HEAD(&tdls_peer->list);
1363 		list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1364 		mwifiex_dbg(priv->adapter, INFO,
1365 			    "Add auto TDLS peer= %pM to list\n", mac);
1366 	}
1367 
1368 	spin_unlock_bh(&priv->auto_tdls_lock);
1369 }
1370 
mwifiex_auto_tdls_update_peer_status(struct mwifiex_private * priv,const u8 * mac,u8 link_status)1371 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1372 					  const u8 *mac, u8 link_status)
1373 {
1374 	struct mwifiex_auto_tdls_peer *peer;
1375 
1376 	if (!priv->adapter->auto_tdls)
1377 		return;
1378 
1379 	spin_lock_bh(&priv->auto_tdls_lock);
1380 	list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1381 		if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1382 			if ((link_status == TDLS_NOT_SETUP) &&
1383 			    (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1384 				peer->failure_count++;
1385 			else if (mwifiex_is_tdls_link_setup(link_status))
1386 				peer->failure_count = 0;
1387 
1388 			peer->tdls_status = link_status;
1389 			break;
1390 		}
1391 	}
1392 	spin_unlock_bh(&priv->auto_tdls_lock);
1393 }
1394 
mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private * priv,u8 * mac,s8 snr,s8 nflr)1395 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1396 					  u8 *mac, s8 snr, s8 nflr)
1397 {
1398 	struct mwifiex_auto_tdls_peer *peer;
1399 
1400 	if (!priv->adapter->auto_tdls)
1401 		return;
1402 
1403 	spin_lock_bh(&priv->auto_tdls_lock);
1404 	list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1405 		if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1406 			peer->rssi = nflr - snr;
1407 			peer->rssi_jiffies = jiffies;
1408 			break;
1409 		}
1410 	}
1411 	spin_unlock_bh(&priv->auto_tdls_lock);
1412 }
1413 
mwifiex_check_auto_tdls(struct timer_list * t)1414 void mwifiex_check_auto_tdls(struct timer_list *t)
1415 {
1416 	struct mwifiex_private *priv = from_timer(priv, t, auto_tdls_timer);
1417 	struct mwifiex_auto_tdls_peer *tdls_peer;
1418 	u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1419 
1420 	if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1421 		pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1422 		       __func__);
1423 		return;
1424 	}
1425 
1426 	if (unlikely(!priv->adapter->auto_tdls))
1427 		return;
1428 
1429 	if (!priv->auto_tdls_timer_active) {
1430 		mwifiex_dbg(priv->adapter, INFO,
1431 			    "auto TDLS timer inactive; return");
1432 		return;
1433 	}
1434 
1435 	priv->check_tdls_tx = false;
1436 
1437 	spin_lock_bh(&priv->auto_tdls_lock);
1438 	list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1439 		if ((jiffies - tdls_peer->rssi_jiffies) >
1440 		    (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1441 			tdls_peer->rssi = 0;
1442 			tdls_peer->do_discover = true;
1443 			priv->check_tdls_tx = true;
1444 		}
1445 
1446 		if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1447 		     !tdls_peer->rssi) &&
1448 		    mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1449 			tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1450 			mwifiex_dbg(priv->adapter, MSG,
1451 				    "teardown TDLS link,peer=%pM rssi=%d\n",
1452 				    tdls_peer->mac_addr, -tdls_peer->rssi);
1453 			tdls_peer->do_discover = true;
1454 			priv->check_tdls_tx = true;
1455 			cfg80211_tdls_oper_request(priv->netdev,
1456 						   tdls_peer->mac_addr,
1457 						   NL80211_TDLS_TEARDOWN,
1458 						   reason, GFP_ATOMIC);
1459 		} else if (tdls_peer->rssi &&
1460 			   tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1461 			   tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1462 			   tdls_peer->failure_count <
1463 			   MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1464 				priv->check_tdls_tx = true;
1465 				tdls_peer->do_setup = true;
1466 				mwifiex_dbg(priv->adapter, INFO,
1467 					    "check TDLS with peer=%pM\t"
1468 					    "rssi=%d\n", tdls_peer->mac_addr,
1469 					    tdls_peer->rssi);
1470 		}
1471 	}
1472 	spin_unlock_bh(&priv->auto_tdls_lock);
1473 
1474 	mod_timer(&priv->auto_tdls_timer,
1475 		  jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1476 }
1477 
mwifiex_setup_auto_tdls_timer(struct mwifiex_private * priv)1478 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1479 {
1480 	timer_setup(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, 0);
1481 	priv->auto_tdls_timer_active = true;
1482 	mod_timer(&priv->auto_tdls_timer,
1483 		  jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1484 }
1485 
mwifiex_clean_auto_tdls(struct mwifiex_private * priv)1486 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1487 {
1488 	if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1489 	    priv->adapter->auto_tdls &&
1490 	    priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1491 		priv->auto_tdls_timer_active = false;
1492 		del_timer(&priv->auto_tdls_timer);
1493 		mwifiex_flush_auto_tdls_list(priv);
1494 	}
1495 }
1496 
mwifiex_config_tdls(struct mwifiex_private * priv,u8 enable)1497 static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1498 {
1499 	struct mwifiex_tdls_config config;
1500 
1501 	config.enable = cpu_to_le16(enable);
1502 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1503 				ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1504 }
1505 
mwifiex_config_tdls_enable(struct mwifiex_private * priv)1506 int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1507 {
1508 	return mwifiex_config_tdls(priv, true);
1509 }
1510 
mwifiex_config_tdls_disable(struct mwifiex_private * priv)1511 int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1512 {
1513 	return mwifiex_config_tdls(priv, false);
1514 }
1515 
mwifiex_config_tdls_cs_params(struct mwifiex_private * priv)1516 int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1517 {
1518 	struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1519 
1520 	config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1521 	config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1522 	config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1523 
1524 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1525 				ACT_TDLS_CS_PARAMS, 0,
1526 				&config_tdls_cs_params, true);
1527 }
1528 
mwifiex_stop_tdls_cs(struct mwifiex_private * priv,const u8 * peer_mac)1529 int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1530 {
1531 	struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1532 
1533 	ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1534 
1535 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1536 				ACT_TDLS_CS_STOP, 0,
1537 				&stop_tdls_cs_params, true);
1538 }
1539 
mwifiex_start_tdls_cs(struct mwifiex_private * priv,const u8 * peer_mac,u8 primary_chan,u8 second_chan_offset,u8 band)1540 int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1541 			  u8 primary_chan, u8 second_chan_offset, u8 band)
1542 {
1543 	struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1544 
1545 	ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1546 	start_tdls_cs_params.primary_chan = primary_chan;
1547 	start_tdls_cs_params.second_chan_offset = second_chan_offset;
1548 	start_tdls_cs_params.band = band;
1549 
1550 	start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1551 	start_tdls_cs_params.switch_timeout =
1552 					cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1553 	start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1554 	start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1555 
1556 	return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1557 				ACT_TDLS_CS_INIT, 0,
1558 				&start_tdls_cs_params, true);
1559 }
1560