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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
30static 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
85static 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. */
118static int
119mwifiex_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
153static 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
168static 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
186static int
187mwifiex_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
234static 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
356static 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
372static 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
381static void
382mwifiex_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
409static void
410mwifiex_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
429static 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
440static 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
452static 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
464static 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
612static void
613mwifiex_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
628int 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
728static int
729mwifiex_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 unsigned int extra;
739 u8 radio, *pos;
740
741 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
742
743 mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u));
744
745 memset(mgmt, 0, 24);
746 memcpy(mgmt->da, peer, ETH_ALEN);
747 memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
748 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
749 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
750 IEEE80211_STYPE_ACTION);
751
752 /* add address 4 */
753 pos = skb_put(skb, ETH_ALEN);
754
755 switch (action_code) {
756 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
757 /* See the layout of 'struct ieee80211_mgmt'. */
758 extra = sizeof(mgmt->u.action.u.tdls_discover_resp) +
759 sizeof(mgmt->u.action.category);
760 skb_put(skb, extra);
761 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
762 mgmt->u.action.u.tdls_discover_resp.action_code =
763 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
764 mgmt->u.action.u.tdls_discover_resp.dialog_token =
765 dialog_token;
766 mgmt->u.action.u.tdls_discover_resp.capability =
767 cpu_to_le16(capab);
768 /* move back for addr4 */
769 memmove(pos + ETH_ALEN, &mgmt->u.action, extra);
770 /* init address 4 */
771 eth_broadcast_addr(pos);
772
773 ret = mwifiex_tdls_append_rates_ie(priv, skb);
774 if (ret) {
775 dev_kfree_skb_any(skb);
776 return ret;
777 }
778
779 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
780 *pos++ = WLAN_EID_HT_CAPABILITY;
781 *pos++ = sizeof(struct ieee80211_ht_cap);
782 ht_cap = (void *)pos;
783 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
784 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
785 if (ret) {
786 dev_kfree_skb_any(skb);
787 return ret;
788 }
789
790 if (priv->adapter->is_hw_11ac_capable) {
791 ret = mwifiex_tdls_add_vht_capab(priv, skb);
792 if (ret) {
793 dev_kfree_skb_any(skb);
794 return ret;
795 }
796 mwifiex_tdls_add_aid(priv, skb);
797 }
798
799 mwifiex_tdls_add_ext_capab(priv, skb);
800 mwifiex_tdls_add_bss_co_2040(skb);
801 mwifiex_tdls_add_supported_chan(skb);
802 mwifiex_tdls_add_qos_capab(skb);
803 mwifiex_tdls_add_oper_class(skb);
804 break;
805 default:
806 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
807 return -EINVAL;
808 }
809
810 return 0;
811}
812
813int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
814 u8 action_code, u8 dialog_token,
815 u16 status_code, const u8 *extra_ies,
816 size_t extra_ies_len)
817{
818 struct sk_buff *skb;
819 struct mwifiex_txinfo *tx_info;
820 u8 *pos;
821 u32 pkt_type, tx_control;
822 u16 pkt_len, skb_len;
823
824 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
825 max(sizeof(struct ieee80211_mgmt),
826 sizeof(struct ieee80211_tdls_data)) +
827 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
828 MWIFIEX_SUPPORTED_RATES +
829 sizeof(struct ieee_types_extcap) +
830 sizeof(struct ieee80211_ht_cap) +
831 sizeof(struct ieee_types_bss_co_2040) +
832 sizeof(struct ieee80211_ht_operation) +
833 sizeof(struct ieee80211_tdls_lnkie) +
834 extra_ies_len +
835 3 + /* Qos Info */
836 ETH_ALEN; /* Address4 */
837
838 if (priv->adapter->is_hw_11ac_capable)
839 skb_len += sizeof(struct ieee_types_vht_cap) +
840 sizeof(struct ieee_types_vht_oper) +
841 sizeof(struct ieee_types_aid);
842
843 skb = dev_alloc_skb(skb_len);
844 if (!skb) {
845 mwifiex_dbg(priv->adapter, ERROR,
846 "allocate skb failed for management frame\n");
847 return -ENOMEM;
848 }
849
850 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
851
852 pkt_type = PKT_TYPE_MGMT;
853 tx_control = 0;
854 pos = skb_put_zero(skb,
855 MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
856 memcpy(pos, &pkt_type, sizeof(pkt_type));
857 memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
858
859 if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
860 dialog_token, status_code,
861 skb)) {
862 dev_kfree_skb_any(skb);
863 return -EINVAL;
864 }
865
866 if (extra_ies_len)
867 skb_put_data(skb, extra_ies, extra_ies_len);
868
869 /* the TDLS link IE is always added last we are the responder */
870
871 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
872 priv->cfg_bssid);
873
874 skb->priority = MWIFIEX_PRIO_VI;
875
876 tx_info = MWIFIEX_SKB_TXCB(skb);
877 memset(tx_info, 0, sizeof(*tx_info));
878 tx_info->bss_num = priv->bss_num;
879 tx_info->bss_type = priv->bss_type;
880 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
881
882 pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
883 memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
884 sizeof(pkt_len));
885 __net_timestamp(skb);
886 mwifiex_queue_tx_pkt(priv, skb);
887
888 return 0;
889}
890
891/* This function process tdls action frame from peer.
892 * Peer capabilities are stored into station node structure.
893 */
894void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
895 u8 *buf, int len)
896{
897 struct mwifiex_sta_node *sta_ptr;
898 u8 *peer, *pos, *end;
899 u8 i, action, basic;
900 u16 cap = 0;
901 int ies_len = 0;
902
903 if (len < (sizeof(struct ethhdr) + 3))
904 return;
905 if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
906 return;
907 if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
908 return;
909
910 peer = buf + ETH_ALEN;
911 action = *(buf + sizeof(struct ethhdr) + 2);
912 mwifiex_dbg(priv->adapter, DATA,
913 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
914
915 switch (action) {
916 case WLAN_TDLS_SETUP_REQUEST:
917 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
918 return;
919
920 pos = buf + sizeof(struct ethhdr) + 4;
921 /* payload 1+ category 1 + action 1 + dialog 1 */
922 cap = get_unaligned_le16(pos);
923 ies_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
924 pos += 2;
925 break;
926
927 case WLAN_TDLS_SETUP_RESPONSE:
928 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
929 return;
930 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
931 pos = buf + sizeof(struct ethhdr) + 6;
932 cap = get_unaligned_le16(pos);
933 ies_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
934 pos += 2;
935 break;
936
937 case WLAN_TDLS_SETUP_CONFIRM:
938 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
939 return;
940 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
941 ies_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
942 break;
943 default:
944 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
945 return;
946 }
947
948 sta_ptr = mwifiex_add_sta_entry(priv, peer);
949 if (!sta_ptr)
950 return;
951
952 sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
953
954 for (end = pos + ies_len; pos + 1 < end; pos += 2 + pos[1]) {
955 u8 ie_len = pos[1];
956
957 if (pos + 2 + ie_len > end)
958 break;
959
960 switch (*pos) {
961 case WLAN_EID_SUPP_RATES:
962 if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
963 return;
964 sta_ptr->tdls_cap.rates_len = ie_len;
965 for (i = 0; i < ie_len; i++)
966 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
967 break;
968
969 case WLAN_EID_EXT_SUPP_RATES:
970 if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
971 return;
972 basic = sta_ptr->tdls_cap.rates_len;
973 if (ie_len > sizeof(sta_ptr->tdls_cap.rates) - basic)
974 return;
975 for (i = 0; i < ie_len; i++)
976 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
977 sta_ptr->tdls_cap.rates_len += ie_len;
978 break;
979 case WLAN_EID_HT_CAPABILITY:
980 if (ie_len != sizeof(struct ieee80211_ht_cap))
981 return;
982 /* copy the ie's value into ht_capb*/
983 memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos + 2,
984 sizeof(struct ieee80211_ht_cap));
985 sta_ptr->is_11n_enabled = 1;
986 break;
987 case WLAN_EID_HT_OPERATION:
988 if (ie_len != sizeof(struct ieee80211_ht_operation))
989 return;
990 /* copy the ie's value into ht_oper*/
991 memcpy(&sta_ptr->tdls_cap.ht_oper, pos + 2,
992 sizeof(struct ieee80211_ht_operation));
993 break;
994 case WLAN_EID_BSS_COEX_2040:
995 if (ie_len != sizeof(pos[2]))
996 return;
997 sta_ptr->tdls_cap.coex_2040 = pos[2];
998 break;
999 case WLAN_EID_EXT_CAPABILITY:
1000 if (ie_len < sizeof(struct ieee_types_header))
1001 return;
1002 if (ie_len > 8)
1003 return;
1004 memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
1005 sizeof(struct ieee_types_header) +
1006 min_t(u8, ie_len, 8));
1007 break;
1008 case WLAN_EID_RSN:
1009 if (ie_len < sizeof(struct ieee_types_header))
1010 return;
1011 if (ie_len > IEEE_MAX_IE_SIZE -
1012 sizeof(struct ieee_types_header))
1013 return;
1014 memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
1015 sizeof(struct ieee_types_header) +
1016 min_t(u8, ie_len, IEEE_MAX_IE_SIZE -
1017 sizeof(struct ieee_types_header)));
1018 break;
1019 case WLAN_EID_QOS_CAPA:
1020 if (ie_len != sizeof(pos[2]))
1021 return;
1022 sta_ptr->tdls_cap.qos_info = pos[2];
1023 break;
1024 case WLAN_EID_VHT_OPERATION:
1025 if (priv->adapter->is_hw_11ac_capable) {
1026 if (ie_len !=
1027 sizeof(struct ieee80211_vht_operation))
1028 return;
1029 /* copy the ie's value into vhtoper*/
1030 memcpy(&sta_ptr->tdls_cap.vhtoper, pos + 2,
1031 sizeof(struct ieee80211_vht_operation));
1032 }
1033 break;
1034 case WLAN_EID_VHT_CAPABILITY:
1035 if (priv->adapter->is_hw_11ac_capable) {
1036 if (ie_len != sizeof(struct ieee80211_vht_cap))
1037 return;
1038 /* copy the ie's value into vhtcap*/
1039 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos + 2,
1040 sizeof(struct ieee80211_vht_cap));
1041 sta_ptr->is_11ac_enabled = 1;
1042 }
1043 break;
1044 case WLAN_EID_AID:
1045 if (priv->adapter->is_hw_11ac_capable) {
1046 if (ie_len != sizeof(u16))
1047 return;
1048 sta_ptr->tdls_cap.aid =
1049 get_unaligned_le16((pos + 2));
1050 }
1051 break;
1052 default:
1053 break;
1054 }
1055 }
1056
1057 return;
1058}
1059
1060static int
1061mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1062{
1063 struct mwifiex_sta_node *sta_ptr;
1064 struct mwifiex_ds_tdls_oper tdls_oper;
1065
1066 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1067 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1068
1069 if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1070 mwifiex_dbg(priv->adapter, ERROR,
1071 "link absent for peer %pM; cannot config\n", peer);
1072 return -EINVAL;
1073 }
1074
1075 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1076 tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1077 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1078 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1079}
1080
1081static int
1082mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1083{
1084 struct mwifiex_sta_node *sta_ptr;
1085 struct mwifiex_ds_tdls_oper tdls_oper;
1086
1087 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1088 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1089
1090 if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1091 mwifiex_dbg(priv->adapter, WARN,
1092 "Setup already in progress for peer %pM\n", peer);
1093 return 0;
1094 }
1095
1096 sta_ptr = mwifiex_add_sta_entry(priv, peer);
1097 if (!sta_ptr)
1098 return -ENOMEM;
1099
1100 sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1101 mwifiex_hold_tdls_packets(priv, peer);
1102 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1103 tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1104 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1105 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1106}
1107
1108static int
1109mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1110{
1111 struct mwifiex_sta_node *sta_ptr;
1112 struct mwifiex_ds_tdls_oper tdls_oper;
1113
1114 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1115 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1116
1117 if (sta_ptr) {
1118 if (sta_ptr->is_11n_enabled) {
1119 mwifiex_11n_cleanup_reorder_tbl(priv);
1120 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1121 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1122 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1123 }
1124 mwifiex_del_sta_entry(priv, peer);
1125 }
1126
1127 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1128 mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1129 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1130 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1131 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1132 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1133}
1134
1135static int
1136mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1137{
1138 struct mwifiex_sta_node *sta_ptr;
1139 struct ieee80211_mcs_info mcs;
1140 int i;
1141
1142 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1143
1144 if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1145 mwifiex_dbg(priv->adapter, MSG,
1146 "tdls: enable link %pM success\n", peer);
1147
1148 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1149
1150 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1151 if (mcs.rx_mask[0] != 0xff)
1152 sta_ptr->is_11n_enabled = true;
1153 if (sta_ptr->is_11n_enabled) {
1154 if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1155 IEEE80211_HT_CAP_MAX_AMSDU)
1156 sta_ptr->max_amsdu =
1157 MWIFIEX_TX_DATA_BUF_SIZE_8K;
1158 else
1159 sta_ptr->max_amsdu =
1160 MWIFIEX_TX_DATA_BUF_SIZE_4K;
1161
1162 for (i = 0; i < MAX_NUM_TID; i++)
1163 sta_ptr->ampdu_sta[i] =
1164 priv->aggr_prio_tbl[i].ampdu_user;
1165 } else {
1166 for (i = 0; i < MAX_NUM_TID; i++)
1167 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1168 }
1169 if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1170 WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1171 mwifiex_config_tdls_enable(priv);
1172 mwifiex_config_tdls_cs_params(priv);
1173 }
1174
1175 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1176 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1177 mwifiex_auto_tdls_update_peer_status(priv, peer,
1178 TDLS_SETUP_COMPLETE);
1179 } else {
1180 mwifiex_dbg(priv->adapter, ERROR,
1181 "tdls: enable link %pM failed\n", peer);
1182 if (sta_ptr) {
1183 mwifiex_11n_cleanup_reorder_tbl(priv);
1184 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1185 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1186 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1187 mwifiex_del_sta_entry(priv, peer);
1188 }
1189 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1190 mwifiex_auto_tdls_update_peer_status(priv, peer,
1191 TDLS_NOT_SETUP);
1192
1193 return -1;
1194 }
1195
1196 return 0;
1197}
1198
1199int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1200{
1201 switch (action) {
1202 case MWIFIEX_TDLS_ENABLE_LINK:
1203 return mwifiex_tdls_process_enable_link(priv, peer);
1204 case MWIFIEX_TDLS_DISABLE_LINK:
1205 return mwifiex_tdls_process_disable_link(priv, peer);
1206 case MWIFIEX_TDLS_CREATE_LINK:
1207 return mwifiex_tdls_process_create_link(priv, peer);
1208 case MWIFIEX_TDLS_CONFIG_LINK:
1209 return mwifiex_tdls_process_config_link(priv, peer);
1210 }
1211 return 0;
1212}
1213
1214int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1215{
1216 struct mwifiex_sta_node *sta_ptr;
1217
1218 sta_ptr = mwifiex_get_sta_entry(priv, mac);
1219 if (sta_ptr)
1220 return sta_ptr->tdls_status;
1221
1222 return TDLS_NOT_SETUP;
1223}
1224
1225int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1226 struct tdls_peer_info *buf)
1227{
1228 struct mwifiex_sta_node *sta_ptr;
1229 struct tdls_peer_info *peer = buf;
1230 int count = 0;
1231
1232 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1233 return 0;
1234
1235 /* make sure we are in station mode and connected */
1236 if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1237 return 0;
1238
1239 spin_lock_bh(&priv->sta_list_spinlock);
1240 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1241 if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1242 ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1243 peer++;
1244 count++;
1245 if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1246 break;
1247 }
1248 }
1249 spin_unlock_bh(&priv->sta_list_spinlock);
1250
1251 return count;
1252}
1253
1254void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1255{
1256 struct mwifiex_sta_node *sta_ptr;
1257 struct mwifiex_ds_tdls_oper tdls_oper;
1258
1259 if (list_empty(&priv->sta_list))
1260 return;
1261
1262 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1263 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1264
1265 if (sta_ptr->is_11n_enabled) {
1266 mwifiex_11n_cleanup_reorder_tbl(priv);
1267 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1268 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1269 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1270 }
1271
1272 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1273 TDLS_LINK_TEARDOWN);
1274 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1275 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1276 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1277 HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1278 mwifiex_dbg(priv->adapter, ERROR,
1279 "Disable link failed for TDLS peer %pM",
1280 sta_ptr->mac_addr);
1281 }
1282
1283 mwifiex_del_all_sta_list(priv);
1284}
1285
1286int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1287{
1288 struct mwifiex_auto_tdls_peer *peer;
1289 u8 mac[ETH_ALEN];
1290
1291 ether_addr_copy(mac, skb->data);
1292
1293 spin_lock_bh(&priv->auto_tdls_lock);
1294 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1295 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1296 if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1297 peer->tdls_status == TDLS_NOT_SETUP &&
1298 (peer->failure_count <
1299 MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1300 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1301 mwifiex_dbg(priv->adapter, INFO,
1302 "setup TDLS link, peer=%pM rssi=%d\n",
1303 peer->mac_addr, peer->rssi);
1304
1305 cfg80211_tdls_oper_request(priv->netdev,
1306 peer->mac_addr,
1307 NL80211_TDLS_SETUP,
1308 0, GFP_ATOMIC);
1309 priv->check_tdls_tx = false;
1310 } else if (peer->failure_count <
1311 MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1312 peer->do_discover) {
1313 mwifiex_send_tdls_data_frame(priv,
1314 peer->mac_addr,
1315 WLAN_TDLS_DISCOVERY_REQUEST,
1316 1, 0, NULL, 0);
1317 peer->do_discover = false;
1318 }
1319 }
1320 }
1321 spin_unlock_bh(&priv->auto_tdls_lock);
1322
1323 return 0;
1324}
1325
1326void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1327{
1328 struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1329
1330 spin_lock_bh(&priv->auto_tdls_lock);
1331 list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1332 list_del(&peer->list);
1333 kfree(peer);
1334 }
1335
1336 INIT_LIST_HEAD(&priv->auto_tdls_list);
1337 spin_unlock_bh(&priv->auto_tdls_lock);
1338 priv->check_tdls_tx = false;
1339}
1340
1341void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1342{
1343 struct mwifiex_auto_tdls_peer *tdls_peer;
1344
1345 if (!priv->adapter->auto_tdls)
1346 return;
1347
1348 spin_lock_bh(&priv->auto_tdls_lock);
1349 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1350 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1351 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1352 tdls_peer->rssi_jiffies = jiffies;
1353 spin_unlock_bh(&priv->auto_tdls_lock);
1354 return;
1355 }
1356 }
1357
1358 /* create new TDLS peer */
1359 tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1360 if (tdls_peer) {
1361 ether_addr_copy(tdls_peer->mac_addr, mac);
1362 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1363 tdls_peer->rssi_jiffies = jiffies;
1364 INIT_LIST_HEAD(&tdls_peer->list);
1365 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1366 mwifiex_dbg(priv->adapter, INFO,
1367 "Add auto TDLS peer= %pM to list\n", mac);
1368 }
1369
1370 spin_unlock_bh(&priv->auto_tdls_lock);
1371}
1372
1373void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1374 const u8 *mac, u8 link_status)
1375{
1376 struct mwifiex_auto_tdls_peer *peer;
1377
1378 if (!priv->adapter->auto_tdls)
1379 return;
1380
1381 spin_lock_bh(&priv->auto_tdls_lock);
1382 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1383 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1384 if ((link_status == TDLS_NOT_SETUP) &&
1385 (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1386 peer->failure_count++;
1387 else if (mwifiex_is_tdls_link_setup(link_status))
1388 peer->failure_count = 0;
1389
1390 peer->tdls_status = link_status;
1391 break;
1392 }
1393 }
1394 spin_unlock_bh(&priv->auto_tdls_lock);
1395}
1396
1397void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1398 u8 *mac, s8 snr, s8 nflr)
1399{
1400 struct mwifiex_auto_tdls_peer *peer;
1401
1402 if (!priv->adapter->auto_tdls)
1403 return;
1404
1405 spin_lock_bh(&priv->auto_tdls_lock);
1406 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1407 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1408 peer->rssi = nflr - snr;
1409 peer->rssi_jiffies = jiffies;
1410 break;
1411 }
1412 }
1413 spin_unlock_bh(&priv->auto_tdls_lock);
1414}
1415
1416void mwifiex_check_auto_tdls(struct timer_list *t)
1417{
1418 struct mwifiex_private *priv = from_timer(priv, t, auto_tdls_timer);
1419 struct mwifiex_auto_tdls_peer *tdls_peer;
1420 u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1421
1422 if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1423 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1424 __func__);
1425 return;
1426 }
1427
1428 if (unlikely(!priv->adapter->auto_tdls))
1429 return;
1430
1431 if (!priv->auto_tdls_timer_active) {
1432 mwifiex_dbg(priv->adapter, INFO,
1433 "auto TDLS timer inactive; return");
1434 return;
1435 }
1436
1437 priv->check_tdls_tx = false;
1438
1439 spin_lock_bh(&priv->auto_tdls_lock);
1440 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1441 if (time_after(jiffies, tdls_peer->rssi_jiffies +
1442 MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1443 tdls_peer->rssi = 0;
1444 tdls_peer->do_discover = true;
1445 priv->check_tdls_tx = true;
1446 }
1447
1448 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1449 !tdls_peer->rssi) &&
1450 mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1451 tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1452 mwifiex_dbg(priv->adapter, MSG,
1453 "teardown TDLS link,peer=%pM rssi=%d\n",
1454 tdls_peer->mac_addr, -tdls_peer->rssi);
1455 tdls_peer->do_discover = true;
1456 priv->check_tdls_tx = true;
1457 cfg80211_tdls_oper_request(priv->netdev,
1458 tdls_peer->mac_addr,
1459 NL80211_TDLS_TEARDOWN,
1460 reason, GFP_ATOMIC);
1461 } else if (tdls_peer->rssi &&
1462 tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1463 tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1464 tdls_peer->failure_count <
1465 MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1466 priv->check_tdls_tx = true;
1467 mwifiex_dbg(priv->adapter, INFO,
1468 "check TDLS with peer=%pM\t"
1469 "rssi=%d\n", tdls_peer->mac_addr,
1470 tdls_peer->rssi);
1471 }
1472 }
1473 spin_unlock_bh(&priv->auto_tdls_lock);
1474
1475 mod_timer(&priv->auto_tdls_timer,
1476 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1477}
1478
1479void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1480{
1481 timer_setup(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, 0);
1482 priv->auto_tdls_timer_active = true;
1483 mod_timer(&priv->auto_tdls_timer,
1484 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1485}
1486
1487void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1488{
1489 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1490 priv->adapter->auto_tdls &&
1491 priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1492 priv->auto_tdls_timer_active = false;
1493 del_timer(&priv->auto_tdls_timer);
1494 mwifiex_flush_auto_tdls_list(priv);
1495 }
1496}
1497
1498static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1499{
1500 struct mwifiex_tdls_config config;
1501
1502 config.enable = cpu_to_le16(enable);
1503 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1504 ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1505}
1506
1507int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1508{
1509 return mwifiex_config_tdls(priv, true);
1510}
1511
1512int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1513{
1514 return mwifiex_config_tdls(priv, false);
1515}
1516
1517int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1518{
1519 struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1520
1521 config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1522 config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1523 config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1524
1525 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1526 ACT_TDLS_CS_PARAMS, 0,
1527 &config_tdls_cs_params, true);
1528}
1529
1530int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1531{
1532 struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1533
1534 ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1535
1536 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1537 ACT_TDLS_CS_STOP, 0,
1538 &stop_tdls_cs_params, true);
1539}
1540
1541int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1542 u8 primary_chan, u8 second_chan_offset, u8 band)
1543{
1544 struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1545
1546 ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1547 start_tdls_cs_params.primary_chan = primary_chan;
1548 start_tdls_cs_params.second_chan_offset = second_chan_offset;
1549 start_tdls_cs_params.band = band;
1550
1551 start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1552 start_tdls_cs_params.switch_timeout =
1553 cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1554 start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1555 start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1556
1557 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1558 ACT_TDLS_CS_INIT, 0,
1559 &start_tdls_cs_params, true);
1560}