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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / net / wireless / marvell / mwifiex / tdls.c
blob27779d7317fd05d461785019a79daa3849c48400
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
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 unsigned long flags;
37 u32 tid;
38 u8 tid_down;
39
40 mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
41 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
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_irqrestore(&priv->wmm.ra_list_spinlock, flags);
82 return;
83 }
84
85 static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
86 const u8 *mac)
87 {
88 struct mwifiex_ra_list_tbl *ra_list;
89 struct list_head *ra_list_head;
90 struct sk_buff *skb, *tmp;
91 unsigned long flags;
92 int i;
93
94 mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
95 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
96
97 for (i = 0; i < MAX_NUM_TID; i++) {
98 if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
99 ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
100 list_for_each_entry(ra_list, ra_list_head, list) {
101 skb_queue_walk_safe(&ra_list->skb_head, skb,
102 tmp) {
103 if (!ether_addr_equal(mac, skb->data))
104 continue;
105 __skb_unlink(skb, &ra_list->skb_head);
106 atomic_dec(&priv->wmm.tx_pkts_queued);
107 ra_list->total_pkt_count--;
108 skb_queue_tail(&priv->tdls_txq, skb);
109 }
110 }
111 }
112 }
113
114 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
115 return;
116 }
117
118 /* This function appends rate TLV to scan config command. */
119 static int
120 mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
121 struct sk_buff *skb)
122 {
123 u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
124 u16 rates_size, supp_rates_size, ext_rates_size;
125
126 memset(rates, 0, sizeof(rates));
127 rates_size = mwifiex_get_supported_rates(priv, rates);
128
129 supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
130
131 if (skb_tailroom(skb) < rates_size + 4) {
132 mwifiex_dbg(priv->adapter, ERROR,
133 "Insufficient space while adding rates\n");
134 return -ENOMEM;
135 }
136
137 pos = skb_put(skb, supp_rates_size + 2);
138 *pos++ = WLAN_EID_SUPP_RATES;
139 *pos++ = supp_rates_size;
140 memcpy(pos, rates, supp_rates_size);
141
142 if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
143 ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
144 pos = skb_put(skb, ext_rates_size + 2);
145 *pos++ = WLAN_EID_EXT_SUPP_RATES;
146 *pos++ = ext_rates_size;
147 memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
148 ext_rates_size);
149 }
150
151 return 0;
152 }
153
154 static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
155 struct sk_buff *skb)
156 {
157 struct ieee_types_assoc_rsp *assoc_rsp;
158 u8 *pos;
159
160 assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
161 pos = skb_put(skb, 4);
162 *pos++ = WLAN_EID_AID;
163 *pos++ = 2;
164 memcpy(pos, &assoc_rsp->a_id, sizeof(assoc_rsp->a_id));
165
166 return;
167 }
168
169 static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
170 struct sk_buff *skb)
171 {
172 struct ieee80211_vht_cap vht_cap;
173 u8 *pos;
174
175 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
176 *pos++ = WLAN_EID_VHT_CAPABILITY;
177 *pos++ = sizeof(struct ieee80211_vht_cap);
178
179 memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
180
181 mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
182 memcpy(pos, &vht_cap, sizeof(vht_cap));
183
184 return 0;
185 }
186
187 static int
188 mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
189 u8 vht_enabled, struct sk_buff *skb)
190 {
191 struct ieee80211_ht_operation *ht_oper;
192 struct mwifiex_sta_node *sta_ptr;
193 struct mwifiex_bssdescriptor *bss_desc =
194 &priv->curr_bss_params.bss_descriptor;
195 u8 *pos;
196
197 sta_ptr = mwifiex_get_sta_entry(priv, mac);
198 if (unlikely(!sta_ptr)) {
199 mwifiex_dbg(priv->adapter, ERROR,
200 "TDLS peer station not found in list\n");
201 return -1;
202 }
203
204 if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) {
205 mwifiex_dbg(priv->adapter, WARN,
206 "TDLS peer doesn't support ht capabilities\n");
207 return 0;
208 }
209
210 pos = skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
211 *pos++ = WLAN_EID_HT_OPERATION;
212 *pos++ = sizeof(struct ieee80211_ht_operation);
213 ht_oper = (void *)pos;
214
215 ht_oper->primary_chan = bss_desc->channel;
216
217 /* follow AP's channel bandwidth */
218 if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
219 bss_desc->bcn_ht_cap &&
220 ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
221 ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
222
223 if (vht_enabled) {
224 ht_oper->ht_param =
225 mwifiex_get_sec_chan_offset(bss_desc->channel);
226 ht_oper->ht_param |= BIT(2);
227 }
228
229 memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
230 sizeof(struct ieee80211_ht_operation));
231
232 return 0;
233 }
234
235 static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
236 const u8 *mac, struct sk_buff *skb)
237 {
238 struct mwifiex_bssdescriptor *bss_desc;
239 struct ieee80211_vht_operation *vht_oper;
240 struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
241 struct mwifiex_sta_node *sta_ptr;
242 struct mwifiex_adapter *adapter = priv->adapter;
243 u8 supp_chwd_set, peer_supp_chwd_set;
244 u8 *pos, ap_supp_chwd_set, chan_bw;
245 u16 mcs_map_user, mcs_map_resp, mcs_map_result;
246 u16 mcs_user, mcs_resp, nss;
247 u32 usr_vht_cap_info;
248
249 bss_desc = &priv->curr_bss_params.bss_descriptor;
250
251 sta_ptr = mwifiex_get_sta_entry(priv, mac);
252 if (unlikely(!sta_ptr)) {
253 mwifiex_dbg(adapter, ERROR,
254 "TDLS peer station not found in list\n");
255 return -1;
256 }
257
258 if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) {
259 mwifiex_dbg(adapter, WARN,
260 "TDLS peer doesn't support vht capabilities\n");
261 return 0;
262 }
263
264 if (!mwifiex_is_bss_in_11ac_mode(priv)) {
265 if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
266 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
267 mwifiex_dbg(adapter, WARN,
268 "TDLS peer doesn't support wider bandwidth\n");
269 return 0;
270 }
271 } else {
272 ap_vht_cap = bss_desc->bcn_vht_cap;
273 }
274
275 pos = skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
276 *pos++ = WLAN_EID_VHT_OPERATION;
277 *pos++ = sizeof(struct ieee80211_vht_operation);
278 vht_oper = (struct ieee80211_vht_operation *)pos;
279
280 if (bss_desc->bss_band & BAND_A)
281 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
282 else
283 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
284
285 /* find the minimum bandwidth between AP/TDLS peers */
286 vht_cap = &sta_ptr->tdls_cap.vhtcap;
287 supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
288 peer_supp_chwd_set =
289 GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
290 supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
291
292 /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */
293
294 if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
295 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
296 ap_supp_chwd_set =
297 GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
298 supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
299 }
300
301 switch (supp_chwd_set) {
302 case IEEE80211_VHT_CHANWIDTH_80MHZ:
303 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
304 break;
305 case IEEE80211_VHT_CHANWIDTH_160MHZ:
306 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
307 break;
308 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
309 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
310 break;
311 default:
312 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
313 break;
314 }
315
316 mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
317 mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
318 mcs_map_result = 0;
319
320 for (nss = 1; nss <= 8; nss++) {
321 mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
322 mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
323
324 if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
325 (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
326 SET_VHTNSSMCS(mcs_map_result, nss,
327 IEEE80211_VHT_MCS_NOT_SUPPORTED);
328 else
329 SET_VHTNSSMCS(mcs_map_result, nss,
330 min_t(u16, mcs_user, mcs_resp));
331 }
332
333 vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
334
335 switch (vht_oper->chan_width) {
336 case IEEE80211_VHT_CHANWIDTH_80MHZ:
337 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
338 break;
339 case IEEE80211_VHT_CHANWIDTH_160MHZ:
340 chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
341 break;
342 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
343 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
344 break;
345 default:
346 chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
347 break;
348 }
349 vht_oper->center_freq_seg0_idx =
350 mwifiex_get_center_freq_index(priv, BAND_AAC,
351 bss_desc->channel,
352 chan_bw);
353
354 return 0;
355 }
356
357 static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
358 struct sk_buff *skb)
359 {
360 struct ieee_types_extcap *extcap;
361
362 extcap = skb_put(skb, sizeof(struct ieee_types_extcap));
363 extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
364 extcap->ieee_hdr.len = 8;
365 memset(extcap->ext_capab, 0, 8);
366 extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
367 extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH;
368
369 if (priv->adapter->is_hw_11ac_capable)
370 extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
371 }
372
373 static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
374 {
375 u8 *pos = skb_put(skb, 3);
376
377 *pos++ = WLAN_EID_QOS_CAPA;
378 *pos++ = 1;
379 *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
380 }
381
382 static void
383 mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb)
384 {
385 struct ieee80211_wmm_param_ie *wmm;
386 u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00};
387 u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00};
388 u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00};
389 u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00};
390
391 wmm = skb_put_zero(skb, sizeof(*wmm));
392
393 wmm->element_id = WLAN_EID_VENDOR_SPECIFIC;
394 wmm->len = sizeof(*wmm) - 2;
395 wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */
396 wmm->oui[1] = 0x50;
397 wmm->oui[2] = 0xf2;
398 wmm->oui_type = 2; /* WME */
399 wmm->oui_subtype = 1; /* WME param */
400 wmm->version = 1; /* WME ver */
401 wmm->qos_info = 0; /* U-APSD not in use */
402
403 /* use default WMM AC parameters for TDLS link*/
404 memcpy(&wmm->ac[0], ac_be, sizeof(ac_be));
405 memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk));
406 memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi));
407 memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo));
408 }
409
410 static void
411 mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb,
412 u8 qosinfo)
413 {
414 u8 *buf;
415
416 buf = skb_put(skb,
417 MWIFIEX_TDLS_WMM_INFO_SIZE + sizeof(struct ieee_types_header));
418
419 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
420 *buf++ = 7; /* len */
421 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
422 *buf++ = 0x50;
423 *buf++ = 0xf2;
424 *buf++ = 2; /* WME */
425 *buf++ = 0; /* WME info */
426 *buf++ = 1; /* WME ver */
427 *buf++ = qosinfo; /* U-APSD no in use */
428 }
429
430 static void mwifiex_tdls_add_bss_co_2040(struct sk_buff *skb)
431 {
432 struct ieee_types_bss_co_2040 *bssco;
433
434 bssco = skb_put(skb, sizeof(struct ieee_types_bss_co_2040));
435 bssco->ieee_hdr.element_id = WLAN_EID_BSS_COEX_2040;
436 bssco->ieee_hdr.len = sizeof(struct ieee_types_bss_co_2040) -
437 sizeof(struct ieee_types_header);
438 bssco->bss_2040co = 0x01;
439 }
440
441 static void mwifiex_tdls_add_supported_chan(struct sk_buff *skb)
442 {
443 struct ieee_types_generic *supp_chan;
444 u8 chan_supp[] = {1, 11};
445
446 supp_chan = skb_put(skb,
447 (sizeof(struct ieee_types_header) + sizeof(chan_supp)));
448 supp_chan->ieee_hdr.element_id = WLAN_EID_SUPPORTED_CHANNELS;
449 supp_chan->ieee_hdr.len = sizeof(chan_supp);
450 memcpy(supp_chan->data, chan_supp, sizeof(chan_supp));
451 }
452
453 static void mwifiex_tdls_add_oper_class(struct sk_buff *skb)
454 {
455 struct ieee_types_generic *reg_class;
456 u8 rc_list[] = {1,
457 1, 2, 3, 4, 12, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33};
458 reg_class = skb_put(skb,
459 (sizeof(struct ieee_types_header) + sizeof(rc_list)));
460 reg_class->ieee_hdr.element_id = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
461 reg_class->ieee_hdr.len = sizeof(rc_list);
462 memcpy(reg_class->data, rc_list, sizeof(rc_list));
463 }
464
465 static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
466 const u8 *peer, u8 action_code,
467 u8 dialog_token,
468 u16 status_code, struct sk_buff *skb)
469 {
470 struct ieee80211_tdls_data *tf;
471 int ret;
472 u16 capab;
473 struct ieee80211_ht_cap *ht_cap;
474 u8 radio, *pos;
475
476 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
477
478 tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
479 memcpy(tf->da, peer, ETH_ALEN);
480 memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
481 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
482 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
483
484 switch (action_code) {
485 case WLAN_TDLS_SETUP_REQUEST:
486 tf->category = WLAN_CATEGORY_TDLS;
487 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
488 skb_put(skb, sizeof(tf->u.setup_req));
489 tf->u.setup_req.dialog_token = dialog_token;
490 tf->u.setup_req.capability = cpu_to_le16(capab);
491 ret = mwifiex_tdls_append_rates_ie(priv, skb);
492 if (ret) {
493 dev_kfree_skb_any(skb);
494 return ret;
495 }
496
497 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
498 *pos++ = WLAN_EID_HT_CAPABILITY;
499 *pos++ = sizeof(struct ieee80211_ht_cap);
500 ht_cap = (void *)pos;
501 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
502 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
503 if (ret) {
504 dev_kfree_skb_any(skb);
505 return ret;
506 }
507
508 if (priv->adapter->is_hw_11ac_capable) {
509 ret = mwifiex_tdls_add_vht_capab(priv, skb);
510 if (ret) {
511 dev_kfree_skb_any(skb);
512 return ret;
513 }
514 mwifiex_tdls_add_aid(priv, skb);
515 }
516
517 mwifiex_tdls_add_ext_capab(priv, skb);
518 mwifiex_tdls_add_bss_co_2040(skb);
519 mwifiex_tdls_add_supported_chan(skb);
520 mwifiex_tdls_add_oper_class(skb);
521 mwifiex_add_wmm_info_ie(priv, skb, 0);
522 break;
523
524 case WLAN_TDLS_SETUP_RESPONSE:
525 tf->category = WLAN_CATEGORY_TDLS;
526 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
527 skb_put(skb, sizeof(tf->u.setup_resp));
528 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
529 tf->u.setup_resp.dialog_token = dialog_token;
530 tf->u.setup_resp.capability = cpu_to_le16(capab);
531 ret = mwifiex_tdls_append_rates_ie(priv, skb);
532 if (ret) {
533 dev_kfree_skb_any(skb);
534 return ret;
535 }
536
537 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
538 *pos++ = WLAN_EID_HT_CAPABILITY;
539 *pos++ = sizeof(struct ieee80211_ht_cap);
540 ht_cap = (void *)pos;
541 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
542 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
543 if (ret) {
544 dev_kfree_skb_any(skb);
545 return ret;
546 }
547
548 if (priv->adapter->is_hw_11ac_capable) {
549 ret = mwifiex_tdls_add_vht_capab(priv, skb);
550 if (ret) {
551 dev_kfree_skb_any(skb);
552 return ret;
553 }
554 mwifiex_tdls_add_aid(priv, skb);
555 }
556
557 mwifiex_tdls_add_ext_capab(priv, skb);
558 mwifiex_tdls_add_bss_co_2040(skb);
559 mwifiex_tdls_add_supported_chan(skb);
560 mwifiex_tdls_add_oper_class(skb);
561 mwifiex_add_wmm_info_ie(priv, skb, 0);
562 break;
563
564 case WLAN_TDLS_SETUP_CONFIRM:
565 tf->category = WLAN_CATEGORY_TDLS;
566 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
567 skb_put(skb, sizeof(tf->u.setup_cfm));
568 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
569 tf->u.setup_cfm.dialog_token = dialog_token;
570
571 mwifiex_tdls_add_wmm_param_ie(priv, skb);
572 if (priv->adapter->is_hw_11ac_capable) {
573 ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
574 if (ret) {
575 dev_kfree_skb_any(skb);
576 return ret;
577 }
578 ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
579 if (ret) {
580 dev_kfree_skb_any(skb);
581 return ret;
582 }
583 } else {
584 ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
585 if (ret) {
586 dev_kfree_skb_any(skb);
587 return ret;
588 }
589 }
590 break;
591
592 case WLAN_TDLS_TEARDOWN:
593 tf->category = WLAN_CATEGORY_TDLS;
594 tf->action_code = WLAN_TDLS_TEARDOWN;
595 skb_put(skb, sizeof(tf->u.teardown));
596 tf->u.teardown.reason_code = cpu_to_le16(status_code);
597 break;
598
599 case WLAN_TDLS_DISCOVERY_REQUEST:
600 tf->category = WLAN_CATEGORY_TDLS;
601 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
602 skb_put(skb, sizeof(tf->u.discover_req));
603 tf->u.discover_req.dialog_token = dialog_token;
604 break;
605 default:
606 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
607 return -EINVAL;
608 }
609
610 return 0;
611 }
612
613 static void
614 mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
615 const u8 *peer, const u8 *bssid)
616 {
617 struct ieee80211_tdls_lnkie *lnkid;
618
619 lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
620 lnkid->ie_type = WLAN_EID_LINK_ID;
621 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
622 sizeof(struct ieee_types_header);
623
624 memcpy(lnkid->bssid, bssid, ETH_ALEN);
625 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
626 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
627 }
628
629 int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
630 u8 action_code, u8 dialog_token,
631 u16 status_code, const u8 *extra_ies,
632 size_t extra_ies_len)
633 {
634 struct sk_buff *skb;
635 struct mwifiex_txinfo *tx_info;
636 int ret;
637 u16 skb_len;
638
639 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
640 max(sizeof(struct ieee80211_mgmt),
641 sizeof(struct ieee80211_tdls_data)) +
642 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
643 MWIFIEX_SUPPORTED_RATES +
644 3 + /* Qos Info */
645 sizeof(struct ieee_types_extcap) +
646 sizeof(struct ieee80211_ht_cap) +
647 sizeof(struct ieee_types_bss_co_2040) +
648 sizeof(struct ieee80211_ht_operation) +
649 sizeof(struct ieee80211_tdls_lnkie) +
650 (2 * (sizeof(struct ieee_types_header))) +
651 MWIFIEX_SUPPORTED_CHANNELS +
652 MWIFIEX_OPERATING_CLASSES +
653 sizeof(struct ieee80211_wmm_param_ie) +
654 extra_ies_len;
655
656 if (priv->adapter->is_hw_11ac_capable)
657 skb_len += sizeof(struct ieee_types_vht_cap) +
658 sizeof(struct ieee_types_vht_oper) +
659 sizeof(struct ieee_types_aid);
660
661 skb = dev_alloc_skb(skb_len);
662 if (!skb) {
663 mwifiex_dbg(priv->adapter, ERROR,
664 "allocate skb failed for management frame\n");
665 return -ENOMEM;
666 }
667 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
668
669 switch (action_code) {
670 case WLAN_TDLS_SETUP_REQUEST:
671 case WLAN_TDLS_SETUP_CONFIRM:
672 case WLAN_TDLS_TEARDOWN:
673 case WLAN_TDLS_DISCOVERY_REQUEST:
674 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
675 dialog_token, status_code,
676 skb);
677 if (ret) {
678 dev_kfree_skb_any(skb);
679 return ret;
680 }
681 if (extra_ies_len)
682 skb_put_data(skb, extra_ies, extra_ies_len);
683 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
684 priv->cfg_bssid);
685 break;
686 case WLAN_TDLS_SETUP_RESPONSE:
687 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
688 dialog_token, status_code,
689 skb);
690 if (ret) {
691 dev_kfree_skb_any(skb);
692 return ret;
693 }
694 if (extra_ies_len)
695 skb_put_data(skb, extra_ies, extra_ies_len);
696 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
697 priv->cfg_bssid);
698 break;
699 }
700
701 switch (action_code) {
702 case WLAN_TDLS_SETUP_REQUEST:
703 case WLAN_TDLS_SETUP_RESPONSE:
704 skb->priority = MWIFIEX_PRIO_BK;
705 break;
706 default:
707 skb->priority = MWIFIEX_PRIO_VI;
708 break;
709 }
710
711 tx_info = MWIFIEX_SKB_TXCB(skb);
712 memset(tx_info, 0, sizeof(*tx_info));
713 tx_info->bss_num = priv->bss_num;
714 tx_info->bss_type = priv->bss_type;
715
716 __net_timestamp(skb);
717 mwifiex_queue_tx_pkt(priv, skb);
718
719 /* Delay 10ms to make sure tdls setup confirm/teardown frame
720 * is received by peer
721 */
722 if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
723 action_code == WLAN_TDLS_TEARDOWN)
724 msleep_interruptible(10);
725
726 return 0;
727 }
728
729 static int
730 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
731 const u8 *peer,
732 u8 action_code, u8 dialog_token,
733 u16 status_code, struct sk_buff *skb)
734 {
735 struct ieee80211_mgmt *mgmt;
736 u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
737 int ret;
738 u16 capab;
739 struct ieee80211_ht_cap *ht_cap;
740 u8 radio, *pos;
741
742 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
743
744 mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u));
745
746 memset(mgmt, 0, 24);
747 memcpy(mgmt->da, peer, ETH_ALEN);
748 memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
749 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
750 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
751 IEEE80211_STYPE_ACTION);
752
753 /* add address 4 */
754 pos = skb_put(skb, ETH_ALEN);
755
756 switch (action_code) {
757 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
758 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
759 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
760 mgmt->u.action.u.tdls_discover_resp.action_code =
761 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
762 mgmt->u.action.u.tdls_discover_resp.dialog_token =
763 dialog_token;
764 mgmt->u.action.u.tdls_discover_resp.capability =
765 cpu_to_le16(capab);
766 /* move back for addr4 */
767 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
768 sizeof(mgmt->u.action.u.tdls_discover_resp));
769 /* init address 4 */
770 memcpy(pos, bc_addr, ETH_ALEN);
771
772 ret = mwifiex_tdls_append_rates_ie(priv, skb);
773 if (ret) {
774 dev_kfree_skb_any(skb);
775 return ret;
776 }
777
778 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
779 *pos++ = WLAN_EID_HT_CAPABILITY;
780 *pos++ = sizeof(struct ieee80211_ht_cap);
781 ht_cap = (void *)pos;
782 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
783 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
784 if (ret) {
785 dev_kfree_skb_any(skb);
786 return ret;
787 }
788
789 if (priv->adapter->is_hw_11ac_capable) {
790 ret = mwifiex_tdls_add_vht_capab(priv, skb);
791 if (ret) {
792 dev_kfree_skb_any(skb);
793 return ret;
794 }
795 mwifiex_tdls_add_aid(priv, skb);
796 }
797
798 mwifiex_tdls_add_ext_capab(priv, skb);
799 mwifiex_tdls_add_bss_co_2040(skb);
800 mwifiex_tdls_add_supported_chan(skb);
801 mwifiex_tdls_add_qos_capab(skb);
802 mwifiex_tdls_add_oper_class(skb);
803 break;
804 default:
805 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
806 return -EINVAL;
807 }
808
809 return 0;
810 }
811
812 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
813 u8 action_code, u8 dialog_token,
814 u16 status_code, const u8 *extra_ies,
815 size_t extra_ies_len)
816 {
817 struct sk_buff *skb;
818 struct mwifiex_txinfo *tx_info;
819 u8 *pos;
820 u32 pkt_type, tx_control;
821 u16 pkt_len, skb_len;
822
823 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
824 max(sizeof(struct ieee80211_mgmt),
825 sizeof(struct ieee80211_tdls_data)) +
826 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
827 MWIFIEX_SUPPORTED_RATES +
828 sizeof(struct ieee_types_extcap) +
829 sizeof(struct ieee80211_ht_cap) +
830 sizeof(struct ieee_types_bss_co_2040) +
831 sizeof(struct ieee80211_ht_operation) +
832 sizeof(struct ieee80211_tdls_lnkie) +
833 extra_ies_len +
834 3 + /* Qos Info */
835 ETH_ALEN; /* Address4 */
836
837 if (priv->adapter->is_hw_11ac_capable)
838 skb_len += sizeof(struct ieee_types_vht_cap) +
839 sizeof(struct ieee_types_vht_oper) +
840 sizeof(struct ieee_types_aid);
841
842 skb = dev_alloc_skb(skb_len);
843 if (!skb) {
844 mwifiex_dbg(priv->adapter, ERROR,
845 "allocate skb failed for management frame\n");
846 return -ENOMEM;
847 }
848
849 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
850
851 pkt_type = PKT_TYPE_MGMT;
852 tx_control = 0;
853 pos = skb_put_zero(skb,
854 MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
855 memcpy(pos, &pkt_type, sizeof(pkt_type));
856 memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
857
858 if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
859 dialog_token, status_code,
860 skb)) {
861 dev_kfree_skb_any(skb);
862 return -EINVAL;
863 }
864
865 if (extra_ies_len)
866 skb_put_data(skb, extra_ies, extra_ies_len);
867
868 /* the TDLS link IE is always added last we are the responder */
869
870 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
871 priv->cfg_bssid);
872
873 skb->priority = MWIFIEX_PRIO_VI;
874
875 tx_info = MWIFIEX_SKB_TXCB(skb);
876 memset(tx_info, 0, sizeof(*tx_info));
877 tx_info->bss_num = priv->bss_num;
878 tx_info->bss_type = priv->bss_type;
879 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
880
881 pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
882 memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
883 sizeof(pkt_len));
884 __net_timestamp(skb);
885 mwifiex_queue_tx_pkt(priv, skb);
886
887 return 0;
888 }
889
890 /* This function process tdls action frame from peer.
891 * Peer capabilities are stored into station node structure.
892 */
893 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
894 u8 *buf, int len)
895 {
896 struct mwifiex_sta_node *sta_ptr;
897 u8 *peer, *pos, *end;
898 u8 i, action, basic;
899 u16 cap = 0;
900 int ie_len = 0;
901
902 if (len < (sizeof(struct ethhdr) + 3))
903 return;
904 if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
905 return;
906 if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
907 return;
908
909 peer = buf + ETH_ALEN;
910 action = *(buf + sizeof(struct ethhdr) + 2);
911 mwifiex_dbg(priv->adapter, DATA,
912 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
913
914 switch (action) {
915 case WLAN_TDLS_SETUP_REQUEST:
916 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
917 return;
918
919 pos = buf + sizeof(struct ethhdr) + 4;
920 /* payload 1+ category 1 + action 1 + dialog 1 */
921 cap = get_unaligned_le16(pos);
922 ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
923 pos += 2;
924 break;
925
926 case WLAN_TDLS_SETUP_RESPONSE:
927 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
928 return;
929 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
930 pos = buf + sizeof(struct ethhdr) + 6;
931 cap = get_unaligned_le16(pos);
932 ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
933 pos += 2;
934 break;
935
936 case WLAN_TDLS_SETUP_CONFIRM:
937 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
938 return;
939 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
940 ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
941 break;
942 default:
943 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
944 return;
945 }
946
947 sta_ptr = mwifiex_add_sta_entry(priv, peer);
948 if (!sta_ptr)
949 return;
950
951 sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
952
953 for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) {
954 if (pos + 2 + pos[1] > end)
955 break;
956
957 switch (*pos) {
958 case WLAN_EID_SUPP_RATES:
959 sta_ptr->tdls_cap.rates_len = pos[1];
960 for (i = 0; i < pos[1]; i++)
961 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
962 break;
963
964 case WLAN_EID_EXT_SUPP_RATES:
965 basic = sta_ptr->tdls_cap.rates_len;
966 for (i = 0; i < pos[1]; i++)
967 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
968 sta_ptr->tdls_cap.rates_len += pos[1];
969 break;
970 case WLAN_EID_HT_CAPABILITY:
971 memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,
972 sizeof(struct ieee80211_ht_cap));
973 sta_ptr->is_11n_enabled = 1;
974 break;
975 case WLAN_EID_HT_OPERATION:
976 memcpy(&sta_ptr->tdls_cap.ht_oper, pos,
977 sizeof(struct ieee80211_ht_operation));
978 break;
979 case WLAN_EID_BSS_COEX_2040:
980 sta_ptr->tdls_cap.coex_2040 = pos[2];
981 break;
982 case WLAN_EID_EXT_CAPABILITY:
983 memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
984 sizeof(struct ieee_types_header) +
985 min_t(u8, pos[1], 8));
986 break;
987 case WLAN_EID_RSN:
988 memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
989 sizeof(struct ieee_types_header) +
990 min_t(u8, pos[1], IEEE_MAX_IE_SIZE -
991 sizeof(struct ieee_types_header)));
992 break;
993 case WLAN_EID_QOS_CAPA:
994 sta_ptr->tdls_cap.qos_info = pos[2];
995 break;
996 case WLAN_EID_VHT_OPERATION:
997 if (priv->adapter->is_hw_11ac_capable)
998 memcpy(&sta_ptr->tdls_cap.vhtoper, pos,
999 sizeof(struct ieee80211_vht_operation));
1000 break;
1001 case WLAN_EID_VHT_CAPABILITY:
1002 if (priv->adapter->is_hw_11ac_capable) {
1003 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos,
1004 sizeof(struct ieee80211_vht_cap));
1005 sta_ptr->is_11ac_enabled = 1;
1006 }
1007 break;
1008 case WLAN_EID_AID:
1009 if (priv->adapter->is_hw_11ac_capable)
1010 sta_ptr->tdls_cap.aid =
1011 get_unaligned_le16((pos + 2));
1012 default:
1013 break;
1014 }
1015 }
1016
1017 return;
1018 }
1019
1020 static int
1021 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1022 {
1023 struct mwifiex_sta_node *sta_ptr;
1024 struct mwifiex_ds_tdls_oper tdls_oper;
1025
1026 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1027 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1028
1029 if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1030 mwifiex_dbg(priv->adapter, ERROR,
1031 "link absent for peer %pM; cannot config\n", peer);
1032 return -EINVAL;
1033 }
1034
1035 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1036 tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1037 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1038 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1039 }
1040
1041 static int
1042 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1043 {
1044 struct mwifiex_sta_node *sta_ptr;
1045 struct mwifiex_ds_tdls_oper tdls_oper;
1046
1047 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1048 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1049
1050 if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1051 mwifiex_dbg(priv->adapter, WARN,
1052 "Setup already in progress for peer %pM\n", peer);
1053 return 0;
1054 }
1055
1056 sta_ptr = mwifiex_add_sta_entry(priv, peer);
1057 if (!sta_ptr)
1058 return -ENOMEM;
1059
1060 sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1061 mwifiex_hold_tdls_packets(priv, peer);
1062 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1063 tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1064 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1065 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1066 }
1067
1068 static int
1069 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1070 {
1071 struct mwifiex_sta_node *sta_ptr;
1072 struct mwifiex_ds_tdls_oper tdls_oper;
1073 unsigned long flags;
1074
1075 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1076 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1077
1078 if (sta_ptr) {
1079 if (sta_ptr->is_11n_enabled) {
1080 mwifiex_11n_cleanup_reorder_tbl(priv);
1081 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1082 flags);
1083 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1084 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1085 flags);
1086 }
1087 mwifiex_del_sta_entry(priv, peer);
1088 }
1089
1090 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1091 mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1092 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1093 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1094 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1095 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1096 }
1097
1098 static int
1099 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1100 {
1101 struct mwifiex_sta_node *sta_ptr;
1102 struct ieee80211_mcs_info mcs;
1103 unsigned long flags;
1104 int i;
1105
1106 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1107
1108 if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1109 mwifiex_dbg(priv->adapter, MSG,
1110 "tdls: enable link %pM success\n", peer);
1111
1112 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1113
1114 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1115 if (mcs.rx_mask[0] != 0xff)
1116 sta_ptr->is_11n_enabled = true;
1117 if (sta_ptr->is_11n_enabled) {
1118 if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1119 IEEE80211_HT_CAP_MAX_AMSDU)
1120 sta_ptr->max_amsdu =
1121 MWIFIEX_TX_DATA_BUF_SIZE_8K;
1122 else
1123 sta_ptr->max_amsdu =
1124 MWIFIEX_TX_DATA_BUF_SIZE_4K;
1125
1126 for (i = 0; i < MAX_NUM_TID; i++)
1127 sta_ptr->ampdu_sta[i] =
1128 priv->aggr_prio_tbl[i].ampdu_user;
1129 } else {
1130 for (i = 0; i < MAX_NUM_TID; i++)
1131 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1132 }
1133 if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1134 WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1135 mwifiex_config_tdls_enable(priv);
1136 mwifiex_config_tdls_cs_params(priv);
1137 }
1138
1139 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1140 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1141 mwifiex_auto_tdls_update_peer_status(priv, peer,
1142 TDLS_SETUP_COMPLETE);
1143 } else {
1144 mwifiex_dbg(priv->adapter, ERROR,
1145 "tdls: enable link %pM failed\n", peer);
1146 if (sta_ptr) {
1147 mwifiex_11n_cleanup_reorder_tbl(priv);
1148 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1149 flags);
1150 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1151 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1152 flags);
1153 mwifiex_del_sta_entry(priv, peer);
1154 }
1155 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1156 mwifiex_auto_tdls_update_peer_status(priv, peer,
1157 TDLS_NOT_SETUP);
1158
1159 return -1;
1160 }
1161
1162 return 0;
1163 }
1164
1165 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1166 {
1167 switch (action) {
1168 case MWIFIEX_TDLS_ENABLE_LINK:
1169 return mwifiex_tdls_process_enable_link(priv, peer);
1170 case MWIFIEX_TDLS_DISABLE_LINK:
1171 return mwifiex_tdls_process_disable_link(priv, peer);
1172 case MWIFIEX_TDLS_CREATE_LINK:
1173 return mwifiex_tdls_process_create_link(priv, peer);
1174 case MWIFIEX_TDLS_CONFIG_LINK:
1175 return mwifiex_tdls_process_config_link(priv, peer);
1176 }
1177 return 0;
1178 }
1179
1180 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1181 {
1182 struct mwifiex_sta_node *sta_ptr;
1183
1184 sta_ptr = mwifiex_get_sta_entry(priv, mac);
1185 if (sta_ptr)
1186 return sta_ptr->tdls_status;
1187
1188 return TDLS_NOT_SETUP;
1189 }
1190
1191 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1192 struct tdls_peer_info *buf)
1193 {
1194 struct mwifiex_sta_node *sta_ptr;
1195 struct tdls_peer_info *peer = buf;
1196 int count = 0;
1197 unsigned long flags;
1198
1199 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1200 return 0;
1201
1202 /* make sure we are in station mode and connected */
1203 if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1204 return 0;
1205
1206 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1207 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1208 if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1209 ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1210 peer++;
1211 count++;
1212 if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1213 break;
1214 }
1215 }
1216 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1217
1218 return count;
1219 }
1220
1221 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1222 {
1223 struct mwifiex_sta_node *sta_ptr;
1224 struct mwifiex_ds_tdls_oper tdls_oper;
1225 unsigned long flags;
1226
1227 if (list_empty(&priv->sta_list))
1228 return;
1229
1230 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1231 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1232
1233 if (sta_ptr->is_11n_enabled) {
1234 mwifiex_11n_cleanup_reorder_tbl(priv);
1235 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1236 flags);
1237 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1238 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1239 flags);
1240 }
1241
1242 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1243 TDLS_LINK_TEARDOWN);
1244 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1245 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1246 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1247 HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1248 mwifiex_dbg(priv->adapter, ERROR,
1249 "Disable link failed for TDLS peer %pM",
1250 sta_ptr->mac_addr);
1251 }
1252
1253 mwifiex_del_all_sta_list(priv);
1254 }
1255
1256 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1257 {
1258 struct mwifiex_auto_tdls_peer *peer;
1259 unsigned long flags;
1260 u8 mac[ETH_ALEN];
1261
1262 ether_addr_copy(mac, skb->data);
1263
1264 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1265 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1266 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1267 if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1268 peer->tdls_status == TDLS_NOT_SETUP &&
1269 (peer->failure_count <
1270 MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1271 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1272 mwifiex_dbg(priv->adapter, INFO,
1273 "setup TDLS link, peer=%pM rssi=%d\n",
1274 peer->mac_addr, peer->rssi);
1275
1276 cfg80211_tdls_oper_request(priv->netdev,
1277 peer->mac_addr,
1278 NL80211_TDLS_SETUP,
1279 0, GFP_ATOMIC);
1280 peer->do_setup = false;
1281 priv->check_tdls_tx = false;
1282 } else if (peer->failure_count <
1283 MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1284 peer->do_discover) {
1285 mwifiex_send_tdls_data_frame(priv,
1286 peer->mac_addr,
1287 WLAN_TDLS_DISCOVERY_REQUEST,
1288 1, 0, NULL, 0);
1289 peer->do_discover = false;
1290 }
1291 }
1292 }
1293 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1294
1295 return 0;
1296 }
1297
1298 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1299 {
1300 struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1301 unsigned long flags;
1302
1303 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1304 list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1305 list_del(&peer->list);
1306 kfree(peer);
1307 }
1308
1309 INIT_LIST_HEAD(&priv->auto_tdls_list);
1310 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1311 priv->check_tdls_tx = false;
1312 }
1313
1314 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1315 {
1316 struct mwifiex_auto_tdls_peer *tdls_peer;
1317 unsigned long flags;
1318
1319 if (!priv->adapter->auto_tdls)
1320 return;
1321
1322 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1323 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1324 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1325 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1326 tdls_peer->rssi_jiffies = jiffies;
1327 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1328 return;
1329 }
1330 }
1331
1332 /* create new TDLS peer */
1333 tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1334 if (tdls_peer) {
1335 ether_addr_copy(tdls_peer->mac_addr, mac);
1336 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1337 tdls_peer->rssi_jiffies = jiffies;
1338 INIT_LIST_HEAD(&tdls_peer->list);
1339 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1340 mwifiex_dbg(priv->adapter, INFO,
1341 "Add auto TDLS peer= %pM to list\n", mac);
1342 }
1343
1344 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1345 }
1346
1347 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1348 const u8 *mac, u8 link_status)
1349 {
1350 struct mwifiex_auto_tdls_peer *peer;
1351 unsigned long flags;
1352
1353 if (!priv->adapter->auto_tdls)
1354 return;
1355
1356 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1357 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1358 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1359 if ((link_status == TDLS_NOT_SETUP) &&
1360 (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1361 peer->failure_count++;
1362 else if (mwifiex_is_tdls_link_setup(link_status))
1363 peer->failure_count = 0;
1364
1365 peer->tdls_status = link_status;
1366 break;
1367 }
1368 }
1369 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1370 }
1371
1372 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1373 u8 *mac, s8 snr, s8 nflr)
1374 {
1375 struct mwifiex_auto_tdls_peer *peer;
1376 unsigned long flags;
1377
1378 if (!priv->adapter->auto_tdls)
1379 return;
1380
1381 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1382 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1383 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1384 peer->rssi = nflr - snr;
1385 peer->rssi_jiffies = jiffies;
1386 break;
1387 }
1388 }
1389 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1390 }
1391
1392 void mwifiex_check_auto_tdls(struct timer_list *t)
1393 {
1394 struct mwifiex_private *priv = from_timer(priv, t, auto_tdls_timer);
1395 struct mwifiex_auto_tdls_peer *tdls_peer;
1396 unsigned long flags;
1397 u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1398
1399 if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1400 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1401 __func__);
1402 return;
1403 }
1404
1405 if (unlikely(!priv->adapter->auto_tdls))
1406 return;
1407
1408 if (!priv->auto_tdls_timer_active) {
1409 mwifiex_dbg(priv->adapter, INFO,
1410 "auto TDLS timer inactive; return");
1411 return;
1412 }
1413
1414 priv->check_tdls_tx = false;
1415
1416 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1417 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1418 if ((jiffies - tdls_peer->rssi_jiffies) >
1419 (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1420 tdls_peer->rssi = 0;
1421 tdls_peer->do_discover = true;
1422 priv->check_tdls_tx = true;
1423 }
1424
1425 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1426 !tdls_peer->rssi) &&
1427 mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1428 tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1429 mwifiex_dbg(priv->adapter, MSG,
1430 "teardown TDLS link,peer=%pM rssi=%d\n",
1431 tdls_peer->mac_addr, -tdls_peer->rssi);
1432 tdls_peer->do_discover = true;
1433 priv->check_tdls_tx = true;
1434 cfg80211_tdls_oper_request(priv->netdev,
1435 tdls_peer->mac_addr,
1436 NL80211_TDLS_TEARDOWN,
1437 reason, GFP_ATOMIC);
1438 } else if (tdls_peer->rssi &&
1439 tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1440 tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1441 tdls_peer->failure_count <
1442 MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1443 priv->check_tdls_tx = true;
1444 tdls_peer->do_setup = true;
1445 mwifiex_dbg(priv->adapter, INFO,
1446 "check TDLS with peer=%pM\t"
1447 "rssi=%d\n", tdls_peer->mac_addr,
1448 tdls_peer->rssi);
1449 }
1450 }
1451 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1452
1453 mod_timer(&priv->auto_tdls_timer,
1454 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1455 }
1456
1457 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1458 {
1459 timer_setup(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, 0);
1460 priv->auto_tdls_timer_active = true;
1461 mod_timer(&priv->auto_tdls_timer,
1462 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1463 }
1464
1465 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1466 {
1467 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1468 priv->adapter->auto_tdls &&
1469 priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1470 priv->auto_tdls_timer_active = false;
1471 del_timer(&priv->auto_tdls_timer);
1472 mwifiex_flush_auto_tdls_list(priv);
1473 }
1474 }
1475
1476 static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1477 {
1478 struct mwifiex_tdls_config config;
1479
1480 config.enable = cpu_to_le16(enable);
1481 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1482 ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1483 }
1484
1485 int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1486 {
1487 return mwifiex_config_tdls(priv, true);
1488 }
1489
1490 int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1491 {
1492 return mwifiex_config_tdls(priv, false);
1493 }
1494
1495 int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1496 {
1497 struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1498
1499 config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1500 config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1501 config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1502
1503 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1504 ACT_TDLS_CS_PARAMS, 0,
1505 &config_tdls_cs_params, true);
1506 }
1507
1508 int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1509 {
1510 struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1511
1512 ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1513
1514 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1515 ACT_TDLS_CS_STOP, 0,
1516 &stop_tdls_cs_params, true);
1517 }
1518
1519 int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1520 u8 primary_chan, u8 second_chan_offset, u8 band)
1521 {
1522 struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1523
1524 ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1525 start_tdls_cs_params.primary_chan = primary_chan;
1526 start_tdls_cs_params.second_chan_offset = second_chan_offset;
1527 start_tdls_cs_params.band = band;
1528
1529 start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1530 start_tdls_cs_params.switch_timeout =
1531 cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1532 start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1533 start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1534
1535 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1536 ACT_TDLS_CS_INIT, 0,
1537 &start_tdls_cs_params, true);
1538 }
CRIS linux kernel tree