1 /* Marvell Wireless LAN device driver: TDLS handling
2 *
3 * Copyright (C) 2014, Marvell International Ltd.
4 *
5 * This software file (the "File") is distributed by Marvell International
6 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
7 * (the "License"). You may use, redistribute and/or modify this File in
8 * accordance with the terms and conditions of the License, a copy of which
9 * is available on the worldwide web at
10 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
11 *
12 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
13 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
14 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
15 * this warranty disclaimer.
16 */
17
18 #include "main.h"
19 #include "wmm.h"
20 #include "11n.h"
21 #include "11n_rxreorder.h"
22 #include "11ac.h"
23
24 #define TDLS_REQ_FIX_LEN 6
25 #define TDLS_RESP_FIX_LEN 8
26 #define TDLS_CONFIRM_FIX_LEN 6
27 #define MWIFIEX_TDLS_WMM_INFO_SIZE 7
28
mwifiex_restore_tdls_packets(struct mwifiex_private * priv,const u8 * mac,u8 status)29 static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv,
30 const u8 *mac, u8 status)
31 {
32 struct mwifiex_ra_list_tbl *ra_list;
33 struct list_head *tid_list;
34 struct sk_buff *skb, *tmp;
35 struct mwifiex_txinfo *tx_info;
36 u32 tid;
37 u8 tid_down;
38
39 mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
40 spin_lock_bh(&priv->wmm.ra_list_spinlock);
41
42 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
43 if (!ether_addr_equal(mac, skb->data))
44 continue;
45
46 __skb_unlink(skb, &priv->tdls_txq);
47 tx_info = MWIFIEX_SKB_TXCB(skb);
48 tid = skb->priority;
49 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
50
51 if (mwifiex_is_tdls_link_setup(status)) {
52 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac);
53 ra_list->tdls_link = true;
54 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
55 } else {
56 tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list;
57 ra_list = list_first_entry_or_null(tid_list,
58 struct mwifiex_ra_list_tbl, list);
59 tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
60 }
61
62 if (!ra_list) {
63 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
64 continue;
65 }
66
67 skb_queue_tail(&ra_list->skb_head, skb);
68
69 ra_list->ba_pkt_count++;
70 ra_list->total_pkt_count++;
71
72 if (atomic_read(&priv->wmm.highest_queued_prio) <
73 tos_to_tid_inv[tid_down])
74 atomic_set(&priv->wmm.highest_queued_prio,
75 tos_to_tid_inv[tid_down]);
76
77 atomic_inc(&priv->wmm.tx_pkts_queued);
78 }
79
80 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
81 return;
82 }
83
mwifiex_hold_tdls_packets(struct mwifiex_private * priv,const u8 * mac)84 static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
85 const u8 *mac)
86 {
87 struct mwifiex_ra_list_tbl *ra_list;
88 struct list_head *ra_list_head;
89 struct sk_buff *skb, *tmp;
90 int i;
91
92 mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
93 spin_lock_bh(&priv->wmm.ra_list_spinlock);
94
95 for (i = 0; i < MAX_NUM_TID; i++) {
96 if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
97 ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
98 list_for_each_entry(ra_list, ra_list_head, list) {
99 skb_queue_walk_safe(&ra_list->skb_head, skb,
100 tmp) {
101 if (!ether_addr_equal(mac, skb->data))
102 continue;
103 __skb_unlink(skb, &ra_list->skb_head);
104 atomic_dec(&priv->wmm.tx_pkts_queued);
105 ra_list->total_pkt_count--;
106 skb_queue_tail(&priv->tdls_txq, skb);
107 }
108 }
109 }
110 }
111
112 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
113 return;
114 }
115
116 /* This function appends rate TLV to scan config command. */
117 static int
mwifiex_tdls_append_rates_ie(struct mwifiex_private * priv,struct sk_buff * skb)118 mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
119 struct sk_buff *skb)
120 {
121 u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
122 u16 rates_size, supp_rates_size, ext_rates_size;
123
124 memset(rates, 0, sizeof(rates));
125 rates_size = mwifiex_get_supported_rates(priv, rates);
126
127 supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
128
129 if (skb_tailroom(skb) < rates_size + 4) {
130 mwifiex_dbg(priv->adapter, ERROR,
131 "Insufficient space while adding rates\n");
132 return -ENOMEM;
133 }
134
135 pos = skb_put(skb, supp_rates_size + 2);
136 *pos++ = WLAN_EID_SUPP_RATES;
137 *pos++ = supp_rates_size;
138 memcpy(pos, rates, supp_rates_size);
139
140 if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
141 ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
142 pos = skb_put(skb, ext_rates_size + 2);
143 *pos++ = WLAN_EID_EXT_SUPP_RATES;
144 *pos++ = ext_rates_size;
145 memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
146 ext_rates_size);
147 }
148
149 return 0;
150 }
151
mwifiex_tdls_add_aid(struct mwifiex_private * priv,struct sk_buff * skb)152 static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
153 struct sk_buff *skb)
154 {
155 struct ieee_types_assoc_rsp *assoc_rsp;
156 u8 *pos;
157
158 assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
159 pos = skb_put(skb, 4);
160 *pos++ = WLAN_EID_AID;
161 *pos++ = 2;
162 memcpy(pos, &assoc_rsp->a_id, sizeof(assoc_rsp->a_id));
163
164 return;
165 }
166
mwifiex_tdls_add_vht_capab(struct mwifiex_private * priv,struct sk_buff * skb)167 static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
168 struct sk_buff *skb)
169 {
170 struct ieee80211_vht_cap vht_cap;
171 u8 *pos;
172
173 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
174 *pos++ = WLAN_EID_VHT_CAPABILITY;
175 *pos++ = sizeof(struct ieee80211_vht_cap);
176
177 memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
178
179 mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
180 memcpy(pos, &vht_cap, sizeof(vht_cap));
181
182 return 0;
183 }
184
185 static int
mwifiex_tdls_add_ht_oper(struct mwifiex_private * priv,const u8 * mac,u8 vht_enabled,struct sk_buff * skb)186 mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
187 u8 vht_enabled, struct sk_buff *skb)
188 {
189 struct ieee80211_ht_operation *ht_oper;
190 struct mwifiex_sta_node *sta_ptr;
191 struct mwifiex_bssdescriptor *bss_desc =
192 &priv->curr_bss_params.bss_descriptor;
193 u8 *pos;
194
195 sta_ptr = mwifiex_get_sta_entry(priv, mac);
196 if (unlikely(!sta_ptr)) {
197 mwifiex_dbg(priv->adapter, ERROR,
198 "TDLS peer station not found in list\n");
199 return -1;
200 }
201
202 if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) {
203 mwifiex_dbg(priv->adapter, WARN,
204 "TDLS peer doesn't support ht capabilities\n");
205 return 0;
206 }
207
208 pos = skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
209 *pos++ = WLAN_EID_HT_OPERATION;
210 *pos++ = sizeof(struct ieee80211_ht_operation);
211 ht_oper = (void *)pos;
212
213 ht_oper->primary_chan = bss_desc->channel;
214
215 /* follow AP's channel bandwidth */
216 if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
217 bss_desc->bcn_ht_cap &&
218 ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
219 ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
220
221 if (vht_enabled) {
222 ht_oper->ht_param =
223 mwifiex_get_sec_chan_offset(bss_desc->channel);
224 ht_oper->ht_param |= BIT(2);
225 }
226
227 memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
228 sizeof(struct ieee80211_ht_operation));
229
230 return 0;
231 }
232
mwifiex_tdls_add_vht_oper(struct mwifiex_private * priv,const u8 * mac,struct sk_buff * skb)233 static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
234 const u8 *mac, struct sk_buff *skb)
235 {
236 struct mwifiex_bssdescriptor *bss_desc;
237 struct ieee80211_vht_operation *vht_oper;
238 struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
239 struct mwifiex_sta_node *sta_ptr;
240 struct mwifiex_adapter *adapter = priv->adapter;
241 u8 supp_chwd_set, peer_supp_chwd_set;
242 u8 *pos, ap_supp_chwd_set, chan_bw;
243 u16 mcs_map_user, mcs_map_resp, mcs_map_result;
244 u16 mcs_user, mcs_resp, nss;
245 u32 usr_vht_cap_info;
246
247 bss_desc = &priv->curr_bss_params.bss_descriptor;
248
249 sta_ptr = mwifiex_get_sta_entry(priv, mac);
250 if (unlikely(!sta_ptr)) {
251 mwifiex_dbg(adapter, ERROR,
252 "TDLS peer station not found in list\n");
253 return -1;
254 }
255
256 if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) {
257 mwifiex_dbg(adapter, WARN,
258 "TDLS peer doesn't support vht capabilities\n");
259 return 0;
260 }
261
262 if (!mwifiex_is_bss_in_11ac_mode(priv)) {
263 if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
264 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
265 mwifiex_dbg(adapter, WARN,
266 "TDLS peer doesn't support wider bandwidth\n");
267 return 0;
268 }
269 } else {
270 ap_vht_cap = bss_desc->bcn_vht_cap;
271 }
272
273 pos = skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
274 *pos++ = WLAN_EID_VHT_OPERATION;
275 *pos++ = sizeof(struct ieee80211_vht_operation);
276 vht_oper = (struct ieee80211_vht_operation *)pos;
277
278 if (bss_desc->bss_band & BAND_A)
279 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
280 else
281 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
282
283 /* find the minimum bandwidth between AP/TDLS peers */
284 vht_cap = &sta_ptr->tdls_cap.vhtcap;
285 supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
286 peer_supp_chwd_set =
287 GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
288 supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
289
290 /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */
291
292 if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
293 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
294 ap_supp_chwd_set =
295 GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
296 supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
297 }
298
299 switch (supp_chwd_set) {
300 case IEEE80211_VHT_CHANWIDTH_80MHZ:
301 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
302 break;
303 case IEEE80211_VHT_CHANWIDTH_160MHZ:
304 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
305 break;
306 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
307 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
308 break;
309 default:
310 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
311 break;
312 }
313
314 mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
315 mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
316 mcs_map_result = 0;
317
318 for (nss = 1; nss <= 8; nss++) {
319 mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
320 mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
321
322 if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
323 (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
324 SET_VHTNSSMCS(mcs_map_result, nss,
325 IEEE80211_VHT_MCS_NOT_SUPPORTED);
326 else
327 SET_VHTNSSMCS(mcs_map_result, nss,
328 min_t(u16, mcs_user, mcs_resp));
329 }
330
331 vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
332
333 switch (vht_oper->chan_width) {
334 case IEEE80211_VHT_CHANWIDTH_80MHZ:
335 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
336 break;
337 case IEEE80211_VHT_CHANWIDTH_160MHZ:
338 chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
339 break;
340 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
341 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
342 break;
343 default:
344 chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
345 break;
346 }
347 vht_oper->center_freq_seg0_idx =
348 mwifiex_get_center_freq_index(priv, BAND_AAC,
349 bss_desc->channel,
350 chan_bw);
351
352 return 0;
353 }
354
mwifiex_tdls_add_ext_capab(struct mwifiex_private * priv,struct sk_buff * skb)355 static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
356 struct sk_buff *skb)
357 {
358 struct ieee_types_extcap *extcap;
359
360 extcap = skb_put(skb, sizeof(struct ieee_types_extcap));
361 extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
362 extcap->ieee_hdr.len = 8;
363 memset(extcap->ext_capab, 0, 8);
364 extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
365 extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH;
366
367 if (priv->adapter->is_hw_11ac_capable)
368 extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
369 }
370
mwifiex_tdls_add_qos_capab(struct sk_buff * skb)371 static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
372 {
373 u8 *pos = skb_put(skb, 3);
374
375 *pos++ = WLAN_EID_QOS_CAPA;
376 *pos++ = 1;
377 *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
378 }
379
380 static void
mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private * priv,struct sk_buff * skb)381 mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb)
382 {
383 struct ieee80211_wmm_param_ie *wmm;
384 u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00};
385 u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00};
386 u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00};
387 u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00};
388
389 wmm = skb_put_zero(skb, sizeof(*wmm));
390
391 wmm->element_id = WLAN_EID_VENDOR_SPECIFIC;
392 wmm->len = sizeof(*wmm) - 2;
393 wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */
394 wmm->oui[1] = 0x50;
395 wmm->oui[2] = 0xf2;
396 wmm->oui_type = 2; /* WME */
397 wmm->oui_subtype = 1; /* WME param */
398 wmm->version = 1; /* WME ver */
399 wmm->qos_info = 0; /* U-APSD not in use */
400
401 /* use default WMM AC parameters for TDLS link*/
402 memcpy(&wmm->ac[0], ac_be, sizeof(ac_be));
403 memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk));
404 memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi));
405 memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo));
406 }
407
408 static void
mwifiex_add_wmm_info_ie(struct mwifiex_private * priv,struct sk_buff * skb,u8 qosinfo)409 mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb,
410 u8 qosinfo)
411 {
412 u8 *buf;
413
414 buf = skb_put(skb,
415 MWIFIEX_TDLS_WMM_INFO_SIZE + sizeof(struct ieee_types_header));
416
417 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
418 *buf++ = 7; /* len */
419 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
420 *buf++ = 0x50;
421 *buf++ = 0xf2;
422 *buf++ = 2; /* WME */
423 *buf++ = 0; /* WME info */
424 *buf++ = 1; /* WME ver */
425 *buf++ = qosinfo; /* U-APSD no in use */
426 }
427
mwifiex_tdls_add_bss_co_2040(struct sk_buff * skb)428 static void mwifiex_tdls_add_bss_co_2040(struct sk_buff *skb)
429 {
430 struct ieee_types_bss_co_2040 *bssco;
431
432 bssco = skb_put(skb, sizeof(struct ieee_types_bss_co_2040));
433 bssco->ieee_hdr.element_id = WLAN_EID_BSS_COEX_2040;
434 bssco->ieee_hdr.len = sizeof(struct ieee_types_bss_co_2040) -
435 sizeof(struct ieee_types_header);
436 bssco->bss_2040co = 0x01;
437 }
438
mwifiex_tdls_add_supported_chan(struct sk_buff * skb)439 static void mwifiex_tdls_add_supported_chan(struct sk_buff *skb)
440 {
441 struct ieee_types_generic *supp_chan;
442 u8 chan_supp[] = {1, 11};
443
444 supp_chan = skb_put(skb,
445 (sizeof(struct ieee_types_header) + sizeof(chan_supp)));
446 supp_chan->ieee_hdr.element_id = WLAN_EID_SUPPORTED_CHANNELS;
447 supp_chan->ieee_hdr.len = sizeof(chan_supp);
448 memcpy(supp_chan->data, chan_supp, sizeof(chan_supp));
449 }
450
mwifiex_tdls_add_oper_class(struct sk_buff * skb)451 static void mwifiex_tdls_add_oper_class(struct sk_buff *skb)
452 {
453 struct ieee_types_generic *reg_class;
454 u8 rc_list[] = {1,
455 1, 2, 3, 4, 12, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33};
456 reg_class = skb_put(skb,
457 (sizeof(struct ieee_types_header) + sizeof(rc_list)));
458 reg_class->ieee_hdr.element_id = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
459 reg_class->ieee_hdr.len = sizeof(rc_list);
460 memcpy(reg_class->data, rc_list, sizeof(rc_list));
461 }
462
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)463 static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
464 const u8 *peer, u8 action_code,
465 u8 dialog_token,
466 u16 status_code, struct sk_buff *skb)
467 {
468 struct ieee80211_tdls_data *tf;
469 int ret;
470 u16 capab;
471 struct ieee80211_ht_cap *ht_cap;
472 u8 radio, *pos;
473
474 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
475
476 tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
477 memcpy(tf->da, peer, ETH_ALEN);
478 memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
479 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
480 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
481
482 switch (action_code) {
483 case WLAN_TDLS_SETUP_REQUEST:
484 tf->category = WLAN_CATEGORY_TDLS;
485 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
486 skb_put(skb, sizeof(tf->u.setup_req));
487 tf->u.setup_req.dialog_token = dialog_token;
488 tf->u.setup_req.capability = cpu_to_le16(capab);
489 ret = mwifiex_tdls_append_rates_ie(priv, skb);
490 if (ret) {
491 dev_kfree_skb_any(skb);
492 return ret;
493 }
494
495 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
496 *pos++ = WLAN_EID_HT_CAPABILITY;
497 *pos++ = sizeof(struct ieee80211_ht_cap);
498 ht_cap = (void *)pos;
499 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
500 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
501 if (ret) {
502 dev_kfree_skb_any(skb);
503 return ret;
504 }
505
506 if (priv->adapter->is_hw_11ac_capable) {
507 ret = mwifiex_tdls_add_vht_capab(priv, skb);
508 if (ret) {
509 dev_kfree_skb_any(skb);
510 return ret;
511 }
512 mwifiex_tdls_add_aid(priv, skb);
513 }
514
515 mwifiex_tdls_add_ext_capab(priv, skb);
516 mwifiex_tdls_add_bss_co_2040(skb);
517 mwifiex_tdls_add_supported_chan(skb);
518 mwifiex_tdls_add_oper_class(skb);
519 mwifiex_add_wmm_info_ie(priv, skb, 0);
520 break;
521
522 case WLAN_TDLS_SETUP_RESPONSE:
523 tf->category = WLAN_CATEGORY_TDLS;
524 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
525 skb_put(skb, sizeof(tf->u.setup_resp));
526 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
527 tf->u.setup_resp.dialog_token = dialog_token;
528 tf->u.setup_resp.capability = cpu_to_le16(capab);
529 ret = mwifiex_tdls_append_rates_ie(priv, skb);
530 if (ret) {
531 dev_kfree_skb_any(skb);
532 return ret;
533 }
534
535 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
536 *pos++ = WLAN_EID_HT_CAPABILITY;
537 *pos++ = sizeof(struct ieee80211_ht_cap);
538 ht_cap = (void *)pos;
539 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
540 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
541 if (ret) {
542 dev_kfree_skb_any(skb);
543 return ret;
544 }
545
546 if (priv->adapter->is_hw_11ac_capable) {
547 ret = mwifiex_tdls_add_vht_capab(priv, skb);
548 if (ret) {
549 dev_kfree_skb_any(skb);
550 return ret;
551 }
552 mwifiex_tdls_add_aid(priv, skb);
553 }
554
555 mwifiex_tdls_add_ext_capab(priv, skb);
556 mwifiex_tdls_add_bss_co_2040(skb);
557 mwifiex_tdls_add_supported_chan(skb);
558 mwifiex_tdls_add_oper_class(skb);
559 mwifiex_add_wmm_info_ie(priv, skb, 0);
560 break;
561
562 case WLAN_TDLS_SETUP_CONFIRM:
563 tf->category = WLAN_CATEGORY_TDLS;
564 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
565 skb_put(skb, sizeof(tf->u.setup_cfm));
566 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
567 tf->u.setup_cfm.dialog_token = dialog_token;
568
569 mwifiex_tdls_add_wmm_param_ie(priv, skb);
570 if (priv->adapter->is_hw_11ac_capable) {
571 ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
572 if (ret) {
573 dev_kfree_skb_any(skb);
574 return ret;
575 }
576 ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
577 if (ret) {
578 dev_kfree_skb_any(skb);
579 return ret;
580 }
581 } else {
582 ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
583 if (ret) {
584 dev_kfree_skb_any(skb);
585 return ret;
586 }
587 }
588 break;
589
590 case WLAN_TDLS_TEARDOWN:
591 tf->category = WLAN_CATEGORY_TDLS;
592 tf->action_code = WLAN_TDLS_TEARDOWN;
593 skb_put(skb, sizeof(tf->u.teardown));
594 tf->u.teardown.reason_code = cpu_to_le16(status_code);
595 break;
596
597 case WLAN_TDLS_DISCOVERY_REQUEST:
598 tf->category = WLAN_CATEGORY_TDLS;
599 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
600 skb_put(skb, sizeof(tf->u.discover_req));
601 tf->u.discover_req.dialog_token = dialog_token;
602 break;
603 default:
604 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
605 return -EINVAL;
606 }
607
608 return 0;
609 }
610
611 static void
mwifiex_tdls_add_link_ie(struct sk_buff * skb,const u8 * src_addr,const u8 * peer,const u8 * bssid)612 mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
613 const u8 *peer, const u8 *bssid)
614 {
615 struct ieee80211_tdls_lnkie *lnkid;
616
617 lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
618 lnkid->ie_type = WLAN_EID_LINK_ID;
619 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
620 sizeof(struct ieee_types_header);
621
622 memcpy(lnkid->bssid, bssid, ETH_ALEN);
623 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
624 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
625 }
626
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)627 int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
628 u8 action_code, u8 dialog_token,
629 u16 status_code, const u8 *extra_ies,
630 size_t extra_ies_len)
631 {
632 struct sk_buff *skb;
633 struct mwifiex_txinfo *tx_info;
634 int ret;
635 u16 skb_len;
636
637 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
638 max(sizeof(struct ieee80211_mgmt),
639 sizeof(struct ieee80211_tdls_data)) +
640 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
641 MWIFIEX_SUPPORTED_RATES +
642 3 + /* Qos Info */
643 sizeof(struct ieee_types_extcap) +
644 sizeof(struct ieee80211_ht_cap) +
645 sizeof(struct ieee_types_bss_co_2040) +
646 sizeof(struct ieee80211_ht_operation) +
647 sizeof(struct ieee80211_tdls_lnkie) +
648 (2 * (sizeof(struct ieee_types_header))) +
649 MWIFIEX_SUPPORTED_CHANNELS +
650 MWIFIEX_OPERATING_CLASSES +
651 sizeof(struct ieee80211_wmm_param_ie) +
652 extra_ies_len;
653
654 if (priv->adapter->is_hw_11ac_capable)
655 skb_len += sizeof(struct ieee_types_vht_cap) +
656 sizeof(struct ieee_types_vht_oper) +
657 sizeof(struct ieee_types_aid);
658
659 skb = dev_alloc_skb(skb_len);
660 if (!skb) {
661 mwifiex_dbg(priv->adapter, ERROR,
662 "allocate skb failed for management frame\n");
663 return -ENOMEM;
664 }
665 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
666
667 switch (action_code) {
668 case WLAN_TDLS_SETUP_REQUEST:
669 case WLAN_TDLS_SETUP_CONFIRM:
670 case WLAN_TDLS_TEARDOWN:
671 case WLAN_TDLS_DISCOVERY_REQUEST:
672 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
673 dialog_token, status_code,
674 skb);
675 if (ret) {
676 dev_kfree_skb_any(skb);
677 return ret;
678 }
679 if (extra_ies_len)
680 skb_put_data(skb, extra_ies, extra_ies_len);
681 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
682 priv->cfg_bssid);
683 break;
684 case WLAN_TDLS_SETUP_RESPONSE:
685 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
686 dialog_token, status_code,
687 skb);
688 if (ret) {
689 dev_kfree_skb_any(skb);
690 return ret;
691 }
692 if (extra_ies_len)
693 skb_put_data(skb, extra_ies, extra_ies_len);
694 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
695 priv->cfg_bssid);
696 break;
697 }
698
699 switch (action_code) {
700 case WLAN_TDLS_SETUP_REQUEST:
701 case WLAN_TDLS_SETUP_RESPONSE:
702 skb->priority = MWIFIEX_PRIO_BK;
703 break;
704 default:
705 skb->priority = MWIFIEX_PRIO_VI;
706 break;
707 }
708
709 tx_info = MWIFIEX_SKB_TXCB(skb);
710 memset(tx_info, 0, sizeof(*tx_info));
711 tx_info->bss_num = priv->bss_num;
712 tx_info->bss_type = priv->bss_type;
713
714 __net_timestamp(skb);
715 mwifiex_queue_tx_pkt(priv, skb);
716
717 /* Delay 10ms to make sure tdls setup confirm/teardown frame
718 * is received by peer
719 */
720 if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
721 action_code == WLAN_TDLS_TEARDOWN)
722 msleep_interruptible(10);
723
724 return 0;
725 }
726
727 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)728 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
729 const u8 *peer,
730 u8 action_code, u8 dialog_token,
731 u16 status_code, struct sk_buff *skb)
732 {
733 struct ieee80211_mgmt *mgmt;
734 int ret;
735 u16 capab;
736 struct ieee80211_ht_cap *ht_cap;
737 u8 radio, *pos;
738
739 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
740
741 mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u));
742
743 memset(mgmt, 0, 24);
744 memcpy(mgmt->da, peer, ETH_ALEN);
745 memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
746 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
747 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
748 IEEE80211_STYPE_ACTION);
749
750 /* add address 4 */
751 pos = skb_put(skb, ETH_ALEN);
752
753 switch (action_code) {
754 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
755 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
756 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
757 mgmt->u.action.u.tdls_discover_resp.action_code =
758 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
759 mgmt->u.action.u.tdls_discover_resp.dialog_token =
760 dialog_token;
761 mgmt->u.action.u.tdls_discover_resp.capability =
762 cpu_to_le16(capab);
763 /* move back for addr4 */
764 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
765 sizeof(mgmt->u.action.u.tdls_discover_resp));
766 /* init address 4 */
767 eth_broadcast_addr(pos);
768
769 ret = mwifiex_tdls_append_rates_ie(priv, skb);
770 if (ret) {
771 dev_kfree_skb_any(skb);
772 return ret;
773 }
774
775 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
776 *pos++ = WLAN_EID_HT_CAPABILITY;
777 *pos++ = sizeof(struct ieee80211_ht_cap);
778 ht_cap = (void *)pos;
779 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
780 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
781 if (ret) {
782 dev_kfree_skb_any(skb);
783 return ret;
784 }
785
786 if (priv->adapter->is_hw_11ac_capable) {
787 ret = mwifiex_tdls_add_vht_capab(priv, skb);
788 if (ret) {
789 dev_kfree_skb_any(skb);
790 return ret;
791 }
792 mwifiex_tdls_add_aid(priv, skb);
793 }
794
795 mwifiex_tdls_add_ext_capab(priv, skb);
796 mwifiex_tdls_add_bss_co_2040(skb);
797 mwifiex_tdls_add_supported_chan(skb);
798 mwifiex_tdls_add_qos_capab(skb);
799 mwifiex_tdls_add_oper_class(skb);
800 break;
801 default:
802 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
803 return -EINVAL;
804 }
805
806 return 0;
807 }
808
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)809 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
810 u8 action_code, u8 dialog_token,
811 u16 status_code, const u8 *extra_ies,
812 size_t extra_ies_len)
813 {
814 struct sk_buff *skb;
815 struct mwifiex_txinfo *tx_info;
816 u8 *pos;
817 u32 pkt_type, tx_control;
818 u16 pkt_len, skb_len;
819
820 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
821 max(sizeof(struct ieee80211_mgmt),
822 sizeof(struct ieee80211_tdls_data)) +
823 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
824 MWIFIEX_SUPPORTED_RATES +
825 sizeof(struct ieee_types_extcap) +
826 sizeof(struct ieee80211_ht_cap) +
827 sizeof(struct ieee_types_bss_co_2040) +
828 sizeof(struct ieee80211_ht_operation) +
829 sizeof(struct ieee80211_tdls_lnkie) +
830 extra_ies_len +
831 3 + /* Qos Info */
832 ETH_ALEN; /* Address4 */
833
834 if (priv->adapter->is_hw_11ac_capable)
835 skb_len += sizeof(struct ieee_types_vht_cap) +
836 sizeof(struct ieee_types_vht_oper) +
837 sizeof(struct ieee_types_aid);
838
839 skb = dev_alloc_skb(skb_len);
840 if (!skb) {
841 mwifiex_dbg(priv->adapter, ERROR,
842 "allocate skb failed for management frame\n");
843 return -ENOMEM;
844 }
845
846 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
847
848 pkt_type = PKT_TYPE_MGMT;
849 tx_control = 0;
850 pos = skb_put_zero(skb,
851 MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
852 memcpy(pos, &pkt_type, sizeof(pkt_type));
853 memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
854
855 if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
856 dialog_token, status_code,
857 skb)) {
858 dev_kfree_skb_any(skb);
859 return -EINVAL;
860 }
861
862 if (extra_ies_len)
863 skb_put_data(skb, extra_ies, extra_ies_len);
864
865 /* the TDLS link IE is always added last we are the responder */
866
867 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
868 priv->cfg_bssid);
869
870 skb->priority = MWIFIEX_PRIO_VI;
871
872 tx_info = MWIFIEX_SKB_TXCB(skb);
873 memset(tx_info, 0, sizeof(*tx_info));
874 tx_info->bss_num = priv->bss_num;
875 tx_info->bss_type = priv->bss_type;
876 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
877
878 pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
879 memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
880 sizeof(pkt_len));
881 __net_timestamp(skb);
882 mwifiex_queue_tx_pkt(priv, skb);
883
884 return 0;
885 }
886
887 /* This function process tdls action frame from peer.
888 * Peer capabilities are stored into station node structure.
889 */
mwifiex_process_tdls_action_frame(struct mwifiex_private * priv,u8 * buf,int len)890 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
891 u8 *buf, int len)
892 {
893 struct mwifiex_sta_node *sta_ptr;
894 u8 *peer, *pos, *end;
895 u8 i, action, basic;
896 u16 cap = 0;
897 int ie_len = 0;
898
899 if (len < (sizeof(struct ethhdr) + 3))
900 return;
901 if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
902 return;
903 if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
904 return;
905
906 peer = buf + ETH_ALEN;
907 action = *(buf + sizeof(struct ethhdr) + 2);
908 mwifiex_dbg(priv->adapter, DATA,
909 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
910
911 switch (action) {
912 case WLAN_TDLS_SETUP_REQUEST:
913 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
914 return;
915
916 pos = buf + sizeof(struct ethhdr) + 4;
917 /* payload 1+ category 1 + action 1 + dialog 1 */
918 cap = get_unaligned_le16(pos);
919 ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
920 pos += 2;
921 break;
922
923 case WLAN_TDLS_SETUP_RESPONSE:
924 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
925 return;
926 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
927 pos = buf + sizeof(struct ethhdr) + 6;
928 cap = get_unaligned_le16(pos);
929 ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
930 pos += 2;
931 break;
932
933 case WLAN_TDLS_SETUP_CONFIRM:
934 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
935 return;
936 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
937 ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
938 break;
939 default:
940 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
941 return;
942 }
943
944 sta_ptr = mwifiex_add_sta_entry(priv, peer);
945 if (!sta_ptr)
946 return;
947
948 sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
949
950 for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) {
951 if (pos + 2 + pos[1] > end)
952 break;
953
954 switch (*pos) {
955 case WLAN_EID_SUPP_RATES:
956 sta_ptr->tdls_cap.rates_len = pos[1];
957 for (i = 0; i < pos[1]; i++)
958 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
959 break;
960
961 case WLAN_EID_EXT_SUPP_RATES:
962 basic = sta_ptr->tdls_cap.rates_len;
963 for (i = 0; i < pos[1]; i++)
964 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
965 sta_ptr->tdls_cap.rates_len += pos[1];
966 break;
967 case WLAN_EID_HT_CAPABILITY:
968 memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,
969 sizeof(struct ieee80211_ht_cap));
970 sta_ptr->is_11n_enabled = 1;
971 break;
972 case WLAN_EID_HT_OPERATION:
973 memcpy(&sta_ptr->tdls_cap.ht_oper, pos,
974 sizeof(struct ieee80211_ht_operation));
975 break;
976 case WLAN_EID_BSS_COEX_2040:
977 sta_ptr->tdls_cap.coex_2040 = pos[2];
978 break;
979 case WLAN_EID_EXT_CAPABILITY:
980 memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
981 sizeof(struct ieee_types_header) +
982 min_t(u8, pos[1], 8));
983 break;
984 case WLAN_EID_RSN:
985 memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
986 sizeof(struct ieee_types_header) +
987 min_t(u8, pos[1], IEEE_MAX_IE_SIZE -
988 sizeof(struct ieee_types_header)));
989 break;
990 case WLAN_EID_QOS_CAPA:
991 sta_ptr->tdls_cap.qos_info = pos[2];
992 break;
993 case WLAN_EID_VHT_OPERATION:
994 if (priv->adapter->is_hw_11ac_capable)
995 memcpy(&sta_ptr->tdls_cap.vhtoper, pos,
996 sizeof(struct ieee80211_vht_operation));
997 break;
998 case WLAN_EID_VHT_CAPABILITY:
999 if (priv->adapter->is_hw_11ac_capable) {
1000 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos,
1001 sizeof(struct ieee80211_vht_cap));
1002 sta_ptr->is_11ac_enabled = 1;
1003 }
1004 break;
1005 case WLAN_EID_AID:
1006 if (priv->adapter->is_hw_11ac_capable)
1007 sta_ptr->tdls_cap.aid =
1008 get_unaligned_le16((pos + 2));
1009 default:
1010 break;
1011 }
1012 }
1013
1014 return;
1015 }
1016
1017 static int
mwifiex_tdls_process_config_link(struct mwifiex_private * priv,const u8 * peer)1018 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1019 {
1020 struct mwifiex_sta_node *sta_ptr;
1021 struct mwifiex_ds_tdls_oper tdls_oper;
1022
1023 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1024 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1025
1026 if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1027 mwifiex_dbg(priv->adapter, ERROR,
1028 "link absent for peer %pM; cannot config\n", peer);
1029 return -EINVAL;
1030 }
1031
1032 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1033 tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1034 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1035 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1036 }
1037
1038 static int
mwifiex_tdls_process_create_link(struct mwifiex_private * priv,const u8 * peer)1039 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1040 {
1041 struct mwifiex_sta_node *sta_ptr;
1042 struct mwifiex_ds_tdls_oper tdls_oper;
1043
1044 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1045 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1046
1047 if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1048 mwifiex_dbg(priv->adapter, WARN,
1049 "Setup already in progress for peer %pM\n", peer);
1050 return 0;
1051 }
1052
1053 sta_ptr = mwifiex_add_sta_entry(priv, peer);
1054 if (!sta_ptr)
1055 return -ENOMEM;
1056
1057 sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1058 mwifiex_hold_tdls_packets(priv, peer);
1059 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1060 tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1061 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1062 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1063 }
1064
1065 static int
mwifiex_tdls_process_disable_link(struct mwifiex_private * priv,const u8 * peer)1066 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1067 {
1068 struct mwifiex_sta_node *sta_ptr;
1069 struct mwifiex_ds_tdls_oper tdls_oper;
1070
1071 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1072 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1073
1074 if (sta_ptr) {
1075 if (sta_ptr->is_11n_enabled) {
1076 mwifiex_11n_cleanup_reorder_tbl(priv);
1077 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1078 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1079 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1080 }
1081 mwifiex_del_sta_entry(priv, peer);
1082 }
1083
1084 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1085 mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1086 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1087 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1088 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1089 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1090 }
1091
1092 static int
mwifiex_tdls_process_enable_link(struct mwifiex_private * priv,const u8 * peer)1093 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1094 {
1095 struct mwifiex_sta_node *sta_ptr;
1096 struct ieee80211_mcs_info mcs;
1097 int i;
1098
1099 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1100
1101 if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1102 mwifiex_dbg(priv->adapter, MSG,
1103 "tdls: enable link %pM success\n", peer);
1104
1105 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1106
1107 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1108 if (mcs.rx_mask[0] != 0xff)
1109 sta_ptr->is_11n_enabled = true;
1110 if (sta_ptr->is_11n_enabled) {
1111 if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1112 IEEE80211_HT_CAP_MAX_AMSDU)
1113 sta_ptr->max_amsdu =
1114 MWIFIEX_TX_DATA_BUF_SIZE_8K;
1115 else
1116 sta_ptr->max_amsdu =
1117 MWIFIEX_TX_DATA_BUF_SIZE_4K;
1118
1119 for (i = 0; i < MAX_NUM_TID; i++)
1120 sta_ptr->ampdu_sta[i] =
1121 priv->aggr_prio_tbl[i].ampdu_user;
1122 } else {
1123 for (i = 0; i < MAX_NUM_TID; i++)
1124 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1125 }
1126 if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1127 WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1128 mwifiex_config_tdls_enable(priv);
1129 mwifiex_config_tdls_cs_params(priv);
1130 }
1131
1132 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1133 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1134 mwifiex_auto_tdls_update_peer_status(priv, peer,
1135 TDLS_SETUP_COMPLETE);
1136 } else {
1137 mwifiex_dbg(priv->adapter, ERROR,
1138 "tdls: enable link %pM failed\n", peer);
1139 if (sta_ptr) {
1140 mwifiex_11n_cleanup_reorder_tbl(priv);
1141 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1142 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1143 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1144 mwifiex_del_sta_entry(priv, peer);
1145 }
1146 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1147 mwifiex_auto_tdls_update_peer_status(priv, peer,
1148 TDLS_NOT_SETUP);
1149
1150 return -1;
1151 }
1152
1153 return 0;
1154 }
1155
mwifiex_tdls_oper(struct mwifiex_private * priv,const u8 * peer,u8 action)1156 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1157 {
1158 switch (action) {
1159 case MWIFIEX_TDLS_ENABLE_LINK:
1160 return mwifiex_tdls_process_enable_link(priv, peer);
1161 case MWIFIEX_TDLS_DISABLE_LINK:
1162 return mwifiex_tdls_process_disable_link(priv, peer);
1163 case MWIFIEX_TDLS_CREATE_LINK:
1164 return mwifiex_tdls_process_create_link(priv, peer);
1165 case MWIFIEX_TDLS_CONFIG_LINK:
1166 return mwifiex_tdls_process_config_link(priv, peer);
1167 }
1168 return 0;
1169 }
1170
mwifiex_get_tdls_link_status(struct mwifiex_private * priv,const u8 * mac)1171 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1172 {
1173 struct mwifiex_sta_node *sta_ptr;
1174
1175 sta_ptr = mwifiex_get_sta_entry(priv, mac);
1176 if (sta_ptr)
1177 return sta_ptr->tdls_status;
1178
1179 return TDLS_NOT_SETUP;
1180 }
1181
mwifiex_get_tdls_list(struct mwifiex_private * priv,struct tdls_peer_info * buf)1182 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1183 struct tdls_peer_info *buf)
1184 {
1185 struct mwifiex_sta_node *sta_ptr;
1186 struct tdls_peer_info *peer = buf;
1187 int count = 0;
1188
1189 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1190 return 0;
1191
1192 /* make sure we are in station mode and connected */
1193 if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1194 return 0;
1195
1196 spin_lock_bh(&priv->sta_list_spinlock);
1197 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1198 if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1199 ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1200 peer++;
1201 count++;
1202 if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1203 break;
1204 }
1205 }
1206 spin_unlock_bh(&priv->sta_list_spinlock);
1207
1208 return count;
1209 }
1210
mwifiex_disable_all_tdls_links(struct mwifiex_private * priv)1211 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1212 {
1213 struct mwifiex_sta_node *sta_ptr;
1214 struct mwifiex_ds_tdls_oper tdls_oper;
1215
1216 if (list_empty(&priv->sta_list))
1217 return;
1218
1219 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1220 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1221
1222 if (sta_ptr->is_11n_enabled) {
1223 mwifiex_11n_cleanup_reorder_tbl(priv);
1224 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1225 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1226 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1227 }
1228
1229 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1230 TDLS_LINK_TEARDOWN);
1231 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1232 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1233 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1234 HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1235 mwifiex_dbg(priv->adapter, ERROR,
1236 "Disable link failed for TDLS peer %pM",
1237 sta_ptr->mac_addr);
1238 }
1239
1240 mwifiex_del_all_sta_list(priv);
1241 }
1242
mwifiex_tdls_check_tx(struct mwifiex_private * priv,struct sk_buff * skb)1243 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1244 {
1245 struct mwifiex_auto_tdls_peer *peer;
1246 u8 mac[ETH_ALEN];
1247
1248 ether_addr_copy(mac, skb->data);
1249
1250 spin_lock_bh(&priv->auto_tdls_lock);
1251 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1252 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1253 if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1254 peer->tdls_status == TDLS_NOT_SETUP &&
1255 (peer->failure_count <
1256 MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1257 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1258 mwifiex_dbg(priv->adapter, INFO,
1259 "setup TDLS link, peer=%pM rssi=%d\n",
1260 peer->mac_addr, peer->rssi);
1261
1262 cfg80211_tdls_oper_request(priv->netdev,
1263 peer->mac_addr,
1264 NL80211_TDLS_SETUP,
1265 0, GFP_ATOMIC);
1266 peer->do_setup = false;
1267 priv->check_tdls_tx = false;
1268 } else if (peer->failure_count <
1269 MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1270 peer->do_discover) {
1271 mwifiex_send_tdls_data_frame(priv,
1272 peer->mac_addr,
1273 WLAN_TDLS_DISCOVERY_REQUEST,
1274 1, 0, NULL, 0);
1275 peer->do_discover = false;
1276 }
1277 }
1278 }
1279 spin_unlock_bh(&priv->auto_tdls_lock);
1280
1281 return 0;
1282 }
1283
mwifiex_flush_auto_tdls_list(struct mwifiex_private * priv)1284 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1285 {
1286 struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1287
1288 spin_lock_bh(&priv->auto_tdls_lock);
1289 list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1290 list_del(&peer->list);
1291 kfree(peer);
1292 }
1293
1294 INIT_LIST_HEAD(&priv->auto_tdls_list);
1295 spin_unlock_bh(&priv->auto_tdls_lock);
1296 priv->check_tdls_tx = false;
1297 }
1298
mwifiex_add_auto_tdls_peer(struct mwifiex_private * priv,const u8 * mac)1299 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1300 {
1301 struct mwifiex_auto_tdls_peer *tdls_peer;
1302
1303 if (!priv->adapter->auto_tdls)
1304 return;
1305
1306 spin_lock_bh(&priv->auto_tdls_lock);
1307 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1308 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1309 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1310 tdls_peer->rssi_jiffies = jiffies;
1311 spin_unlock_bh(&priv->auto_tdls_lock);
1312 return;
1313 }
1314 }
1315
1316 /* create new TDLS peer */
1317 tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1318 if (tdls_peer) {
1319 ether_addr_copy(tdls_peer->mac_addr, mac);
1320 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1321 tdls_peer->rssi_jiffies = jiffies;
1322 INIT_LIST_HEAD(&tdls_peer->list);
1323 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1324 mwifiex_dbg(priv->adapter, INFO,
1325 "Add auto TDLS peer= %pM to list\n", mac);
1326 }
1327
1328 spin_unlock_bh(&priv->auto_tdls_lock);
1329 }
1330
mwifiex_auto_tdls_update_peer_status(struct mwifiex_private * priv,const u8 * mac,u8 link_status)1331 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1332 const u8 *mac, u8 link_status)
1333 {
1334 struct mwifiex_auto_tdls_peer *peer;
1335
1336 if (!priv->adapter->auto_tdls)
1337 return;
1338
1339 spin_lock_bh(&priv->auto_tdls_lock);
1340 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1341 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1342 if ((link_status == TDLS_NOT_SETUP) &&
1343 (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1344 peer->failure_count++;
1345 else if (mwifiex_is_tdls_link_setup(link_status))
1346 peer->failure_count = 0;
1347
1348 peer->tdls_status = link_status;
1349 break;
1350 }
1351 }
1352 spin_unlock_bh(&priv->auto_tdls_lock);
1353 }
1354
mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private * priv,u8 * mac,s8 snr,s8 nflr)1355 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1356 u8 *mac, s8 snr, s8 nflr)
1357 {
1358 struct mwifiex_auto_tdls_peer *peer;
1359
1360 if (!priv->adapter->auto_tdls)
1361 return;
1362
1363 spin_lock_bh(&priv->auto_tdls_lock);
1364 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1365 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1366 peer->rssi = nflr - snr;
1367 peer->rssi_jiffies = jiffies;
1368 break;
1369 }
1370 }
1371 spin_unlock_bh(&priv->auto_tdls_lock);
1372 }
1373
mwifiex_check_auto_tdls(struct timer_list * t)1374 void mwifiex_check_auto_tdls(struct timer_list *t)
1375 {
1376 struct mwifiex_private *priv = from_timer(priv, t, auto_tdls_timer);
1377 struct mwifiex_auto_tdls_peer *tdls_peer;
1378 u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1379
1380 if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1381 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1382 __func__);
1383 return;
1384 }
1385
1386 if (unlikely(!priv->adapter->auto_tdls))
1387 return;
1388
1389 if (!priv->auto_tdls_timer_active) {
1390 mwifiex_dbg(priv->adapter, INFO,
1391 "auto TDLS timer inactive; return");
1392 return;
1393 }
1394
1395 priv->check_tdls_tx = false;
1396
1397 spin_lock_bh(&priv->auto_tdls_lock);
1398 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1399 if ((jiffies - tdls_peer->rssi_jiffies) >
1400 (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1401 tdls_peer->rssi = 0;
1402 tdls_peer->do_discover = true;
1403 priv->check_tdls_tx = true;
1404 }
1405
1406 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1407 !tdls_peer->rssi) &&
1408 mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1409 tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1410 mwifiex_dbg(priv->adapter, MSG,
1411 "teardown TDLS link,peer=%pM rssi=%d\n",
1412 tdls_peer->mac_addr, -tdls_peer->rssi);
1413 tdls_peer->do_discover = true;
1414 priv->check_tdls_tx = true;
1415 cfg80211_tdls_oper_request(priv->netdev,
1416 tdls_peer->mac_addr,
1417 NL80211_TDLS_TEARDOWN,
1418 reason, GFP_ATOMIC);
1419 } else if (tdls_peer->rssi &&
1420 tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1421 tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1422 tdls_peer->failure_count <
1423 MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1424 priv->check_tdls_tx = true;
1425 tdls_peer->do_setup = true;
1426 mwifiex_dbg(priv->adapter, INFO,
1427 "check TDLS with peer=%pM\t"
1428 "rssi=%d\n", tdls_peer->mac_addr,
1429 tdls_peer->rssi);
1430 }
1431 }
1432 spin_unlock_bh(&priv->auto_tdls_lock);
1433
1434 mod_timer(&priv->auto_tdls_timer,
1435 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1436 }
1437
mwifiex_setup_auto_tdls_timer(struct mwifiex_private * priv)1438 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1439 {
1440 timer_setup(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, 0);
1441 priv->auto_tdls_timer_active = true;
1442 mod_timer(&priv->auto_tdls_timer,
1443 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1444 }
1445
mwifiex_clean_auto_tdls(struct mwifiex_private * priv)1446 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1447 {
1448 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1449 priv->adapter->auto_tdls &&
1450 priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1451 priv->auto_tdls_timer_active = false;
1452 del_timer(&priv->auto_tdls_timer);
1453 mwifiex_flush_auto_tdls_list(priv);
1454 }
1455 }
1456
mwifiex_config_tdls(struct mwifiex_private * priv,u8 enable)1457 static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1458 {
1459 struct mwifiex_tdls_config config;
1460
1461 config.enable = cpu_to_le16(enable);
1462 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1463 ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1464 }
1465
mwifiex_config_tdls_enable(struct mwifiex_private * priv)1466 int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1467 {
1468 return mwifiex_config_tdls(priv, true);
1469 }
1470
mwifiex_config_tdls_disable(struct mwifiex_private * priv)1471 int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1472 {
1473 return mwifiex_config_tdls(priv, false);
1474 }
1475
mwifiex_config_tdls_cs_params(struct mwifiex_private * priv)1476 int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1477 {
1478 struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1479
1480 config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1481 config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1482 config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1483
1484 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1485 ACT_TDLS_CS_PARAMS, 0,
1486 &config_tdls_cs_params, true);
1487 }
1488
mwifiex_stop_tdls_cs(struct mwifiex_private * priv,const u8 * peer_mac)1489 int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1490 {
1491 struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1492
1493 ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1494
1495 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1496 ACT_TDLS_CS_STOP, 0,
1497 &stop_tdls_cs_params, true);
1498 }
1499
mwifiex_start_tdls_cs(struct mwifiex_private * priv,const u8 * peer_mac,u8 primary_chan,u8 second_chan_offset,u8 band)1500 int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1501 u8 primary_chan, u8 second_chan_offset, u8 band)
1502 {
1503 struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1504
1505 ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1506 start_tdls_cs_params.primary_chan = primary_chan;
1507 start_tdls_cs_params.second_chan_offset = second_chan_offset;
1508 start_tdls_cs_params.band = band;
1509
1510 start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1511 start_tdls_cs_params.switch_timeout =
1512 cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1513 start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1514 start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1515
1516 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1517 ACT_TDLS_CS_INIT, 0,
1518 &start_tdls_cs_params, true);
1519 }
1520
