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mwifiex: add rx histogram statistics support
[deliverable/linux.git] / drivers / net / wireless / mwifiex / tdls.c
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 dev_dbg(priv->adapter->dev, "%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 (status == TDLS_SETUP_COMPLETE) {
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 if (!list_empty(tid_list))
59 ra_list = list_first_entry(tid_list,
60 struct mwifiex_ra_list_tbl, list);
61 else
62 ra_list = NULL;
63 tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
64 }
65
66 if (!ra_list) {
67 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
68 continue;
69 }
70
71 skb_queue_tail(&ra_list->skb_head, skb);
72
73 ra_list->ba_pkt_count++;
74 ra_list->total_pkt_count++;
75
76 if (atomic_read(&priv->wmm.highest_queued_prio) <
77 tos_to_tid_inv[tid_down])
78 atomic_set(&priv->wmm.highest_queued_prio,
79 tos_to_tid_inv[tid_down]);
80
81 atomic_inc(&priv->wmm.tx_pkts_queued);
82 }
83
84 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
85 return;
86 }
87
88 static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
89 const u8 *mac)
90 {
91 struct mwifiex_ra_list_tbl *ra_list;
92 struct list_head *ra_list_head;
93 struct sk_buff *skb, *tmp;
94 unsigned long flags;
95 int i;
96
97 dev_dbg(priv->adapter->dev, "%s: %pM\n", __func__, mac);
98 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
99
100 for (i = 0; i < MAX_NUM_TID; i++) {
101 if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
102 ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
103 list_for_each_entry(ra_list, ra_list_head, list) {
104 skb_queue_walk_safe(&ra_list->skb_head, skb,
105 tmp) {
106 if (!ether_addr_equal(mac, skb->data))
107 continue;
108 __skb_unlink(skb, &ra_list->skb_head);
109 atomic_dec(&priv->wmm.tx_pkts_queued);
110 ra_list->total_pkt_count--;
111 skb_queue_tail(&priv->tdls_txq, skb);
112 }
113 }
114 }
115 }
116
117 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
118 return;
119 }
120
121 /* This function appends rate TLV to scan config command. */
122 static int
123 mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
124 struct sk_buff *skb)
125 {
126 u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
127 u16 rates_size, supp_rates_size, ext_rates_size;
128
129 memset(rates, 0, sizeof(rates));
130 rates_size = mwifiex_get_supported_rates(priv, rates);
131
132 supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
133
134 if (skb_tailroom(skb) < rates_size + 4) {
135 dev_err(priv->adapter->dev,
136 "Insuffient space while adding rates\n");
137 return -ENOMEM;
138 }
139
140 pos = skb_put(skb, supp_rates_size + 2);
141 *pos++ = WLAN_EID_SUPP_RATES;
142 *pos++ = supp_rates_size;
143 memcpy(pos, rates, supp_rates_size);
144
145 if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
146 ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
147 pos = skb_put(skb, ext_rates_size + 2);
148 *pos++ = WLAN_EID_EXT_SUPP_RATES;
149 *pos++ = ext_rates_size;
150 memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
151 ext_rates_size);
152 }
153
154 return 0;
155 }
156
157 static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
158 struct sk_buff *skb)
159 {
160 struct ieee_types_assoc_rsp *assoc_rsp;
161 u8 *pos;
162
163 assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
164 pos = (void *)skb_put(skb, 4);
165 *pos++ = WLAN_EID_AID;
166 *pos++ = 2;
167 *pos++ = le16_to_cpu(assoc_rsp->a_id);
168
169 return;
170 }
171
172 static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
173 struct sk_buff *skb)
174 {
175 struct ieee80211_vht_cap vht_cap;
176 u8 *pos;
177
178 pos = (void *)skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
179 *pos++ = WLAN_EID_VHT_CAPABILITY;
180 *pos++ = sizeof(struct ieee80211_vht_cap);
181
182 memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
183
184 mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
185 memcpy(pos, &vht_cap, sizeof(vht_cap));
186
187 return 0;
188 }
189
190 static int
191 mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
192 u8 vht_enabled, struct sk_buff *skb)
193 {
194 struct ieee80211_ht_operation *ht_oper;
195 struct mwifiex_sta_node *sta_ptr;
196 struct mwifiex_bssdescriptor *bss_desc =
197 &priv->curr_bss_params.bss_descriptor;
198 u8 *pos;
199
200 sta_ptr = mwifiex_get_sta_entry(priv, mac);
201 if (unlikely(!sta_ptr)) {
202 dev_warn(priv->adapter->dev,
203 "TDLS peer station not found in list\n");
204 return -1;
205 }
206
207 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
208 *pos++ = WLAN_EID_HT_OPERATION;
209 *pos++ = sizeof(struct ieee80211_ht_operation);
210 ht_oper = (void *)pos;
211
212 ht_oper->primary_chan = bss_desc->channel;
213
214 /* follow AP's channel bandwidth */
215 if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
216 bss_desc->bcn_ht_cap &&
217 ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
218 ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
219
220 if (vht_enabled) {
221 ht_oper->ht_param =
222 mwifiex_get_sec_chan_offset(bss_desc->channel);
223 ht_oper->ht_param |= BIT(2);
224 }
225
226 memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
227 sizeof(struct ieee80211_ht_operation));
228
229 return 0;
230 }
231
232 static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
233 const u8 *mac, struct sk_buff *skb)
234 {
235 struct mwifiex_bssdescriptor *bss_desc;
236 struct ieee80211_vht_operation *vht_oper;
237 struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
238 struct mwifiex_sta_node *sta_ptr;
239 struct mwifiex_adapter *adapter = priv->adapter;
240 u8 supp_chwd_set, peer_supp_chwd_set;
241 u8 *pos, ap_supp_chwd_set, chan_bw;
242 u16 mcs_map_user, mcs_map_resp, mcs_map_result;
243 u16 mcs_user, mcs_resp, nss;
244 u32 usr_vht_cap_info;
245
246 bss_desc = &priv->curr_bss_params.bss_descriptor;
247
248 sta_ptr = mwifiex_get_sta_entry(priv, mac);
249 if (unlikely(!sta_ptr)) {
250 dev_warn(adapter->dev, "TDLS peer station not found in list\n");
251 return -1;
252 }
253
254 if (!mwifiex_is_bss_in_11ac_mode(priv)) {
255 if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
256 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
257 dev_dbg(adapter->dev,
258 "TDLS peer doesn't support wider bandwitdh\n");
259 return 0;
260 }
261 } else {
262 ap_vht_cap = bss_desc->bcn_vht_cap;
263 }
264
265 pos = (void *)skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
266 *pos++ = WLAN_EID_VHT_OPERATION;
267 *pos++ = sizeof(struct ieee80211_vht_operation);
268 vht_oper = (struct ieee80211_vht_operation *)pos;
269
270 if (bss_desc->bss_band & BAND_A)
271 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
272 else
273 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
274
275 /* find the minmum bandwith between AP/TDLS peers */
276 vht_cap = &sta_ptr->tdls_cap.vhtcap;
277 supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
278 peer_supp_chwd_set =
279 GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
280 supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
281
282 /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */
283
284 if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
285 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
286 ap_supp_chwd_set =
287 GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
288 supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
289 }
290
291 switch (supp_chwd_set) {
292 case IEEE80211_VHT_CHANWIDTH_80MHZ:
293 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
294 break;
295 case IEEE80211_VHT_CHANWIDTH_160MHZ:
296 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
297 break;
298 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
299 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
300 break;
301 default:
302 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
303 break;
304 }
305
306 mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
307 mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
308 mcs_map_result = 0;
309
310 for (nss = 1; nss <= 8; nss++) {
311 mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
312 mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
313
314 if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
315 (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
316 SET_VHTNSSMCS(mcs_map_result, nss,
317 IEEE80211_VHT_MCS_NOT_SUPPORTED);
318 else
319 SET_VHTNSSMCS(mcs_map_result, nss,
320 min_t(u16, mcs_user, mcs_resp));
321 }
322
323 vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
324
325 switch (vht_oper->chan_width) {
326 case IEEE80211_VHT_CHANWIDTH_80MHZ:
327 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
328 break;
329 case IEEE80211_VHT_CHANWIDTH_160MHZ:
330 chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
331 break;
332 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
333 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
334 break;
335 default:
336 chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
337 break;
338 }
339 vht_oper->center_freq_seg1_idx =
340 mwifiex_get_center_freq_index(priv, BAND_AAC,
341 bss_desc->channel,
342 chan_bw);
343
344 return 0;
345 }
346
347 static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
348 struct sk_buff *skb)
349 {
350 struct ieee_types_extcap *extcap;
351
352 extcap = (void *)skb_put(skb, sizeof(struct ieee_types_extcap));
353 extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
354 extcap->ieee_hdr.len = 8;
355 memset(extcap->ext_capab, 0, 8);
356 extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
357
358 if (priv->adapter->is_hw_11ac_capable)
359 extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
360 }
361
362 static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
363 {
364 u8 *pos = (void *)skb_put(skb, 3);
365
366 *pos++ = WLAN_EID_QOS_CAPA;
367 *pos++ = 1;
368 *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
369 }
370
371 static void
372 mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb)
373 {
374 struct ieee80211_wmm_param_ie *wmm;
375 u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00};
376 u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00};
377 u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00};
378 u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00};
379
380 wmm = (void *)skb_put(skb, sizeof(*wmm));
381 memset(wmm, 0, sizeof(*wmm));
382
383 wmm->element_id = WLAN_EID_VENDOR_SPECIFIC;
384 wmm->len = sizeof(*wmm) - 2;
385 wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */
386 wmm->oui[1] = 0x50;
387 wmm->oui[2] = 0xf2;
388 wmm->oui_type = 2; /* WME */
389 wmm->oui_subtype = 1; /* WME param */
390 wmm->version = 1; /* WME ver */
391 wmm->qos_info = 0; /* U-APSD not in use */
392
393 /* use default WMM AC parameters for TDLS link*/
394 memcpy(&wmm->ac[0], ac_be, sizeof(ac_be));
395 memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk));
396 memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi));
397 memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo));
398 }
399
400 static void
401 mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb,
402 u8 qosinfo)
403 {
404 u8 *buf;
405
406 buf = (void *)skb_put(skb, MWIFIEX_TDLS_WMM_INFO_SIZE +
407 sizeof(struct ieee_types_header));
408
409 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
410 *buf++ = 7; /* len */
411 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
412 *buf++ = 0x50;
413 *buf++ = 0xf2;
414 *buf++ = 2; /* WME */
415 *buf++ = 0; /* WME info */
416 *buf++ = 1; /* WME ver */
417 *buf++ = qosinfo; /* U-APSD no in use */
418 }
419
420 static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
421 const u8 *peer, u8 action_code,
422 u8 dialog_token,
423 u16 status_code, struct sk_buff *skb)
424 {
425 struct ieee80211_tdls_data *tf;
426 int ret;
427 u16 capab;
428 struct ieee80211_ht_cap *ht_cap;
429 u8 radio, *pos;
430
431 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
432
433 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
434 memcpy(tf->da, peer, ETH_ALEN);
435 memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
436 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
437 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
438
439 switch (action_code) {
440 case WLAN_TDLS_SETUP_REQUEST:
441 tf->category = WLAN_CATEGORY_TDLS;
442 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
443 skb_put(skb, sizeof(tf->u.setup_req));
444 tf->u.setup_req.dialog_token = dialog_token;
445 tf->u.setup_req.capability = cpu_to_le16(capab);
446 ret = mwifiex_tdls_append_rates_ie(priv, skb);
447 if (ret) {
448 dev_kfree_skb_any(skb);
449 return ret;
450 }
451
452 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
453 *pos++ = WLAN_EID_HT_CAPABILITY;
454 *pos++ = sizeof(struct ieee80211_ht_cap);
455 ht_cap = (void *)pos;
456 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
457 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
458 if (ret) {
459 dev_kfree_skb_any(skb);
460 return ret;
461 }
462
463 if (priv->adapter->is_hw_11ac_capable) {
464 ret = mwifiex_tdls_add_vht_capab(priv, skb);
465 if (ret) {
466 dev_kfree_skb_any(skb);
467 return ret;
468 }
469 mwifiex_tdls_add_aid(priv, skb);
470 }
471
472 mwifiex_tdls_add_ext_capab(priv, skb);
473 mwifiex_tdls_add_qos_capab(skb);
474 mwifiex_add_wmm_info_ie(priv, skb, 0);
475 break;
476
477 case WLAN_TDLS_SETUP_RESPONSE:
478 tf->category = WLAN_CATEGORY_TDLS;
479 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
480 skb_put(skb, sizeof(tf->u.setup_resp));
481 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
482 tf->u.setup_resp.dialog_token = dialog_token;
483 tf->u.setup_resp.capability = cpu_to_le16(capab);
484 ret = mwifiex_tdls_append_rates_ie(priv, skb);
485 if (ret) {
486 dev_kfree_skb_any(skb);
487 return ret;
488 }
489
490 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
491 *pos++ = WLAN_EID_HT_CAPABILITY;
492 *pos++ = sizeof(struct ieee80211_ht_cap);
493 ht_cap = (void *)pos;
494 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
495 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
496 if (ret) {
497 dev_kfree_skb_any(skb);
498 return ret;
499 }
500
501 if (priv->adapter->is_hw_11ac_capable) {
502 ret = mwifiex_tdls_add_vht_capab(priv, skb);
503 if (ret) {
504 dev_kfree_skb_any(skb);
505 return ret;
506 }
507 mwifiex_tdls_add_aid(priv, skb);
508 }
509
510 mwifiex_tdls_add_ext_capab(priv, skb);
511 mwifiex_tdls_add_qos_capab(skb);
512 mwifiex_add_wmm_info_ie(priv, skb, 0);
513 break;
514
515 case WLAN_TDLS_SETUP_CONFIRM:
516 tf->category = WLAN_CATEGORY_TDLS;
517 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
518 skb_put(skb, sizeof(tf->u.setup_cfm));
519 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
520 tf->u.setup_cfm.dialog_token = dialog_token;
521
522 mwifiex_tdls_add_wmm_param_ie(priv, skb);
523 if (priv->adapter->is_hw_11ac_capable) {
524 ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
525 if (ret) {
526 dev_kfree_skb_any(skb);
527 return ret;
528 }
529 ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
530 if (ret) {
531 dev_kfree_skb_any(skb);
532 return ret;
533 }
534 } else {
535 ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
536 if (ret) {
537 dev_kfree_skb_any(skb);
538 return ret;
539 }
540 }
541 break;
542
543 case WLAN_TDLS_TEARDOWN:
544 tf->category = WLAN_CATEGORY_TDLS;
545 tf->action_code = WLAN_TDLS_TEARDOWN;
546 skb_put(skb, sizeof(tf->u.teardown));
547 tf->u.teardown.reason_code = cpu_to_le16(status_code);
548 break;
549
550 case WLAN_TDLS_DISCOVERY_REQUEST:
551 tf->category = WLAN_CATEGORY_TDLS;
552 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
553 skb_put(skb, sizeof(tf->u.discover_req));
554 tf->u.discover_req.dialog_token = dialog_token;
555 break;
556 default:
557 dev_err(priv->adapter->dev, "Unknown TDLS frame type.\n");
558 return -EINVAL;
559 }
560
561 return 0;
562 }
563
564 static void
565 mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
566 const u8 *peer, const u8 *bssid)
567 {
568 struct ieee80211_tdls_lnkie *lnkid;
569
570 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
571 lnkid->ie_type = WLAN_EID_LINK_ID;
572 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
573 sizeof(struct ieee_types_header);
574
575 memcpy(lnkid->bssid, bssid, ETH_ALEN);
576 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
577 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
578 }
579
580 int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
581 u8 action_code, u8 dialog_token,
582 u16 status_code, const u8 *extra_ies,
583 size_t extra_ies_len)
584 {
585 struct sk_buff *skb;
586 struct mwifiex_txinfo *tx_info;
587 int ret;
588 u16 skb_len;
589
590 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
591 max(sizeof(struct ieee80211_mgmt),
592 sizeof(struct ieee80211_tdls_data)) +
593 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
594 MWIFIEX_SUPPORTED_RATES +
595 3 + /* Qos Info */
596 sizeof(struct ieee_types_extcap) +
597 sizeof(struct ieee80211_ht_cap) +
598 sizeof(struct ieee_types_bss_co_2040) +
599 sizeof(struct ieee80211_ht_operation) +
600 sizeof(struct ieee80211_tdls_lnkie) +
601 sizeof(struct ieee80211_wmm_param_ie) +
602 extra_ies_len;
603
604 if (priv->adapter->is_hw_11ac_capable)
605 skb_len += sizeof(struct ieee_types_vht_cap) +
606 sizeof(struct ieee_types_vht_oper) +
607 sizeof(struct ieee_types_aid);
608
609 skb = dev_alloc_skb(skb_len);
610 if (!skb) {
611 dev_err(priv->adapter->dev,
612 "allocate skb failed for management frame\n");
613 return -ENOMEM;
614 }
615 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
616
617 switch (action_code) {
618 case WLAN_TDLS_SETUP_REQUEST:
619 case WLAN_TDLS_SETUP_CONFIRM:
620 case WLAN_TDLS_TEARDOWN:
621 case WLAN_TDLS_DISCOVERY_REQUEST:
622 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
623 dialog_token, status_code,
624 skb);
625 if (ret) {
626 dev_kfree_skb_any(skb);
627 return ret;
628 }
629 if (extra_ies_len)
630 memcpy(skb_put(skb, extra_ies_len), extra_ies,
631 extra_ies_len);
632 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
633 priv->cfg_bssid);
634 break;
635 case WLAN_TDLS_SETUP_RESPONSE:
636 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
637 dialog_token, status_code,
638 skb);
639 if (ret) {
640 dev_kfree_skb_any(skb);
641 return ret;
642 }
643 if (extra_ies_len)
644 memcpy(skb_put(skb, extra_ies_len), extra_ies,
645 extra_ies_len);
646 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
647 priv->cfg_bssid);
648 break;
649 }
650
651 switch (action_code) {
652 case WLAN_TDLS_SETUP_REQUEST:
653 case WLAN_TDLS_SETUP_RESPONSE:
654 skb->priority = MWIFIEX_PRIO_BK;
655 break;
656 default:
657 skb->priority = MWIFIEX_PRIO_VI;
658 break;
659 }
660
661 tx_info = MWIFIEX_SKB_TXCB(skb);
662 memset(tx_info, 0, sizeof(*tx_info));
663 tx_info->bss_num = priv->bss_num;
664 tx_info->bss_type = priv->bss_type;
665
666 __net_timestamp(skb);
667 mwifiex_queue_tx_pkt(priv, skb);
668
669 return 0;
670 }
671
672 static int
673 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
674 const u8 *peer,
675 u8 action_code, u8 dialog_token,
676 u16 status_code, struct sk_buff *skb)
677 {
678 struct ieee80211_mgmt *mgmt;
679 u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
680 int ret;
681 u16 capab;
682 struct ieee80211_ht_cap *ht_cap;
683 u8 radio, *pos;
684
685 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
686
687 mgmt = (void *)skb_put(skb, offsetof(struct ieee80211_mgmt, u));
688
689 memset(mgmt, 0, 24);
690 memcpy(mgmt->da, peer, ETH_ALEN);
691 memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
692 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
693 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
694 IEEE80211_STYPE_ACTION);
695
696 /* add address 4 */
697 pos = skb_put(skb, ETH_ALEN);
698
699 switch (action_code) {
700 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
701 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
702 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
703 mgmt->u.action.u.tdls_discover_resp.action_code =
704 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
705 mgmt->u.action.u.tdls_discover_resp.dialog_token =
706 dialog_token;
707 mgmt->u.action.u.tdls_discover_resp.capability =
708 cpu_to_le16(capab);
709 /* move back for addr4 */
710 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
711 sizeof(mgmt->u.action.u.tdls_discover_resp));
712 /* init address 4 */
713 memcpy(pos, bc_addr, ETH_ALEN);
714
715 ret = mwifiex_tdls_append_rates_ie(priv, skb);
716 if (ret) {
717 dev_kfree_skb_any(skb);
718 return ret;
719 }
720
721 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
722 *pos++ = WLAN_EID_HT_CAPABILITY;
723 *pos++ = sizeof(struct ieee80211_ht_cap);
724 ht_cap = (void *)pos;
725 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
726 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
727 if (ret) {
728 dev_kfree_skb_any(skb);
729 return ret;
730 }
731
732 if (priv->adapter->is_hw_11ac_capable) {
733 ret = mwifiex_tdls_add_vht_capab(priv, skb);
734 if (ret) {
735 dev_kfree_skb_any(skb);
736 return ret;
737 }
738 mwifiex_tdls_add_aid(priv, skb);
739 }
740
741 mwifiex_tdls_add_ext_capab(priv, skb);
742 mwifiex_tdls_add_qos_capab(skb);
743 break;
744 default:
745 dev_err(priv->adapter->dev, "Unknown TDLS action frame type\n");
746 return -EINVAL;
747 }
748
749 return 0;
750 }
751
752 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
753 u8 action_code, u8 dialog_token,
754 u16 status_code, const u8 *extra_ies,
755 size_t extra_ies_len)
756 {
757 struct sk_buff *skb;
758 struct mwifiex_txinfo *tx_info;
759 u8 *pos;
760 u32 pkt_type, tx_control;
761 u16 pkt_len, skb_len;
762
763 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
764 max(sizeof(struct ieee80211_mgmt),
765 sizeof(struct ieee80211_tdls_data)) +
766 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
767 MWIFIEX_SUPPORTED_RATES +
768 sizeof(struct ieee_types_extcap) +
769 sizeof(struct ieee80211_ht_cap) +
770 sizeof(struct ieee_types_bss_co_2040) +
771 sizeof(struct ieee80211_ht_operation) +
772 sizeof(struct ieee80211_tdls_lnkie) +
773 extra_ies_len +
774 3 + /* Qos Info */
775 ETH_ALEN; /* Address4 */
776
777 if (priv->adapter->is_hw_11ac_capable)
778 skb_len += sizeof(struct ieee_types_vht_cap) +
779 sizeof(struct ieee_types_vht_oper) +
780 sizeof(struct ieee_types_aid);
781
782 skb = dev_alloc_skb(skb_len);
783 if (!skb) {
784 dev_err(priv->adapter->dev,
785 "allocate skb failed for management frame\n");
786 return -ENOMEM;
787 }
788
789 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
790
791 pkt_type = PKT_TYPE_MGMT;
792 tx_control = 0;
793 pos = skb_put(skb, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
794 memset(pos, 0, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
795 memcpy(pos, &pkt_type, sizeof(pkt_type));
796 memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
797
798 if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
799 dialog_token, status_code,
800 skb)) {
801 dev_kfree_skb_any(skb);
802 return -EINVAL;
803 }
804
805 if (extra_ies_len)
806 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
807
808 /* the TDLS link IE is always added last we are the responder */
809
810 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
811 priv->cfg_bssid);
812
813 skb->priority = MWIFIEX_PRIO_VI;
814
815 tx_info = MWIFIEX_SKB_TXCB(skb);
816 memset(tx_info, 0, sizeof(*tx_info));
817 tx_info->bss_num = priv->bss_num;
818 tx_info->bss_type = priv->bss_type;
819 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
820
821 pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
822 memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
823 sizeof(pkt_len));
824 __net_timestamp(skb);
825 mwifiex_queue_tx_pkt(priv, skb);
826
827 return 0;
828 }
829
830 /* This function process tdls action frame from peer.
831 * Peer capabilities are stored into station node structure.
832 */
833 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
834 u8 *buf, int len)
835 {
836 struct mwifiex_sta_node *sta_ptr;
837 u8 *peer, *pos, *end;
838 u8 i, action, basic;
839 __le16 cap = 0;
840 int ie_len = 0;
841
842 if (len < (sizeof(struct ethhdr) + 3))
843 return;
844 if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
845 return;
846 if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
847 return;
848
849 peer = buf + ETH_ALEN;
850 action = *(buf + sizeof(struct ethhdr) + 2);
851 dev_dbg(priv->adapter->dev,
852 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
853
854 switch (action) {
855 case WLAN_TDLS_SETUP_REQUEST:
856 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
857 return;
858
859 pos = buf + sizeof(struct ethhdr) + 4;
860 /* payload 1+ category 1 + action 1 + dialog 1 */
861 cap = cpu_to_le16(*(u16 *)pos);
862 ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
863 pos += 2;
864 break;
865
866 case WLAN_TDLS_SETUP_RESPONSE:
867 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
868 return;
869 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
870 pos = buf + sizeof(struct ethhdr) + 6;
871 cap = cpu_to_le16(*(u16 *)pos);
872 ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
873 pos += 2;
874 break;
875
876 case WLAN_TDLS_SETUP_CONFIRM:
877 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
878 return;
879 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
880 ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
881 break;
882 default:
883 dev_dbg(priv->adapter->dev, "Unknown TDLS frame type.\n");
884 return;
885 }
886
887 sta_ptr = mwifiex_add_sta_entry(priv, peer);
888 if (!sta_ptr)
889 return;
890
891 sta_ptr->tdls_cap.capab = cap;
892
893 for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) {
894 if (pos + 2 + pos[1] > end)
895 break;
896
897 switch (*pos) {
898 case WLAN_EID_SUPP_RATES:
899 sta_ptr->tdls_cap.rates_len = pos[1];
900 for (i = 0; i < pos[1]; i++)
901 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
902 break;
903
904 case WLAN_EID_EXT_SUPP_RATES:
905 basic = sta_ptr->tdls_cap.rates_len;
906 for (i = 0; i < pos[1]; i++)
907 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
908 sta_ptr->tdls_cap.rates_len += pos[1];
909 break;
910 case WLAN_EID_HT_CAPABILITY:
911 memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,
912 sizeof(struct ieee80211_ht_cap));
913 sta_ptr->is_11n_enabled = 1;
914 break;
915 case WLAN_EID_HT_OPERATION:
916 memcpy(&sta_ptr->tdls_cap.ht_oper, pos,
917 sizeof(struct ieee80211_ht_operation));
918 break;
919 case WLAN_EID_BSS_COEX_2040:
920 sta_ptr->tdls_cap.coex_2040 = pos[2];
921 break;
922 case WLAN_EID_EXT_CAPABILITY:
923 memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
924 sizeof(struct ieee_types_header) +
925 min_t(u8, pos[1], 8));
926 break;
927 case WLAN_EID_RSN:
928 memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
929 sizeof(struct ieee_types_header) +
930 min_t(u8, pos[1], IEEE_MAX_IE_SIZE -
931 sizeof(struct ieee_types_header)));
932 break;
933 case WLAN_EID_QOS_CAPA:
934 sta_ptr->tdls_cap.qos_info = pos[2];
935 break;
936 case WLAN_EID_VHT_OPERATION:
937 if (priv->adapter->is_hw_11ac_capable)
938 memcpy(&sta_ptr->tdls_cap.vhtoper, pos,
939 sizeof(struct ieee80211_vht_operation));
940 break;
941 case WLAN_EID_VHT_CAPABILITY:
942 if (priv->adapter->is_hw_11ac_capable) {
943 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos,
944 sizeof(struct ieee80211_vht_cap));
945 sta_ptr->is_11ac_enabled = 1;
946 }
947 break;
948 case WLAN_EID_AID:
949 if (priv->adapter->is_hw_11ac_capable)
950 sta_ptr->tdls_cap.aid =
951 le16_to_cpu(*(__le16 *)(pos + 2));
952 default:
953 break;
954 }
955 }
956
957 return;
958 }
959
960 static int
961 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
962 {
963 struct mwifiex_sta_node *sta_ptr;
964 struct mwifiex_ds_tdls_oper tdls_oper;
965
966 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
967 sta_ptr = mwifiex_get_sta_entry(priv, peer);
968
969 if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
970 dev_err(priv->adapter->dev,
971 "link absent for peer %pM; cannot config\n", peer);
972 return -EINVAL;
973 }
974
975 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
976 tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
977 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
978 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
979 }
980
981 static int
982 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
983 {
984 struct mwifiex_sta_node *sta_ptr;
985 struct mwifiex_ds_tdls_oper tdls_oper;
986
987 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
988 sta_ptr = mwifiex_get_sta_entry(priv, peer);
989
990 if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
991 dev_dbg(priv->adapter->dev,
992 "Setup already in progress for peer %pM\n", peer);
993 return 0;
994 }
995
996 sta_ptr = mwifiex_add_sta_entry(priv, peer);
997 if (!sta_ptr)
998 return -ENOMEM;
999
1000 sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1001 mwifiex_hold_tdls_packets(priv, peer);
1002 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1003 tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1004 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1005 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1006 }
1007
1008 static int
1009 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1010 {
1011 struct mwifiex_sta_node *sta_ptr;
1012 struct mwifiex_ds_tdls_oper tdls_oper;
1013 unsigned long flags;
1014
1015 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1016 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1017
1018 if (sta_ptr) {
1019 if (sta_ptr->is_11n_enabled) {
1020 mwifiex_11n_cleanup_reorder_tbl(priv);
1021 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1022 flags);
1023 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1024 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1025 flags);
1026 }
1027 mwifiex_del_sta_entry(priv, peer);
1028 }
1029
1030 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1031 mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1032 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1033 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1034 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1035 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1036 }
1037
1038 static int
1039 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1040 {
1041 struct mwifiex_sta_node *sta_ptr;
1042 struct ieee80211_mcs_info mcs;
1043 unsigned long flags;
1044 int i;
1045
1046 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1047
1048 if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1049 dev_dbg(priv->adapter->dev,
1050 "tdls: enable link %pM success\n", peer);
1051
1052 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1053
1054 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1055 if (mcs.rx_mask[0] != 0xff)
1056 sta_ptr->is_11n_enabled = true;
1057 if (sta_ptr->is_11n_enabled) {
1058 if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1059 IEEE80211_HT_CAP_MAX_AMSDU)
1060 sta_ptr->max_amsdu =
1061 MWIFIEX_TX_DATA_BUF_SIZE_8K;
1062 else
1063 sta_ptr->max_amsdu =
1064 MWIFIEX_TX_DATA_BUF_SIZE_4K;
1065
1066 for (i = 0; i < MAX_NUM_TID; i++)
1067 sta_ptr->ampdu_sta[i] =
1068 priv->aggr_prio_tbl[i].ampdu_user;
1069 } else {
1070 for (i = 0; i < MAX_NUM_TID; i++)
1071 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1072 }
1073
1074 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1075 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1076 mwifiex_auto_tdls_update_peer_status(priv, peer,
1077 TDLS_SETUP_COMPLETE);
1078 } else {
1079 dev_dbg(priv->adapter->dev,
1080 "tdls: enable link %pM failed\n", peer);
1081 if (sta_ptr) {
1082 mwifiex_11n_cleanup_reorder_tbl(priv);
1083 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1084 flags);
1085 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1086 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1087 flags);
1088 mwifiex_del_sta_entry(priv, peer);
1089 }
1090 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1091 mwifiex_auto_tdls_update_peer_status(priv, peer,
1092 TDLS_NOT_SETUP);
1093
1094 return -1;
1095 }
1096
1097 return 0;
1098 }
1099
1100 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1101 {
1102 switch (action) {
1103 case MWIFIEX_TDLS_ENABLE_LINK:
1104 return mwifiex_tdls_process_enable_link(priv, peer);
1105 case MWIFIEX_TDLS_DISABLE_LINK:
1106 return mwifiex_tdls_process_disable_link(priv, peer);
1107 case MWIFIEX_TDLS_CREATE_LINK:
1108 return mwifiex_tdls_process_create_link(priv, peer);
1109 case MWIFIEX_TDLS_CONFIG_LINK:
1110 return mwifiex_tdls_process_config_link(priv, peer);
1111 }
1112 return 0;
1113 }
1114
1115 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1116 {
1117 struct mwifiex_sta_node *sta_ptr;
1118
1119 sta_ptr = mwifiex_get_sta_entry(priv, mac);
1120 if (sta_ptr)
1121 return sta_ptr->tdls_status;
1122
1123 return TDLS_NOT_SETUP;
1124 }
1125
1126 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1127 struct tdls_peer_info *buf)
1128 {
1129 struct mwifiex_sta_node *sta_ptr;
1130 struct tdls_peer_info *peer = buf;
1131 int count = 0;
1132 unsigned long flags;
1133
1134 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1135 return 0;
1136
1137 /* make sure we are in station mode and connected */
1138 if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1139 return 0;
1140
1141 spin_lock_irqsave(&priv->sta_list_spinlock, flags);
1142 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1143 if (sta_ptr->tdls_status == TDLS_SETUP_COMPLETE) {
1144 ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1145 peer++;
1146 count++;
1147 if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1148 break;
1149 }
1150 }
1151 spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
1152
1153 return count;
1154 }
1155
1156 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1157 {
1158 struct mwifiex_sta_node *sta_ptr;
1159 struct mwifiex_ds_tdls_oper tdls_oper;
1160 unsigned long flags;
1161
1162 if (list_empty(&priv->sta_list))
1163 return;
1164
1165 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1166 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1167
1168 if (sta_ptr->is_11n_enabled) {
1169 mwifiex_11n_cleanup_reorder_tbl(priv);
1170 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1171 flags);
1172 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1173 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1174 flags);
1175 }
1176
1177 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1178 TDLS_LINK_TEARDOWN);
1179 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1180 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1181 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1182 HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1183 dev_warn(priv->adapter->dev,
1184 "Disable link failed for TDLS peer %pM",
1185 sta_ptr->mac_addr);
1186 }
1187
1188 mwifiex_del_all_sta_list(priv);
1189 }
1190
1191 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1192 {
1193 struct mwifiex_auto_tdls_peer *peer;
1194 unsigned long flags;
1195 u8 mac[ETH_ALEN];
1196
1197 ether_addr_copy(mac, skb->data);
1198
1199 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1200 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1201 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1202 if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1203 peer->tdls_status == TDLS_NOT_SETUP &&
1204 (peer->failure_count <
1205 MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1206 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1207 dev_dbg(priv->adapter->dev,
1208 "setup TDLS link, peer=%pM rssi=%d\n",
1209 peer->mac_addr, peer->rssi);
1210
1211 cfg80211_tdls_oper_request(priv->netdev,
1212 peer->mac_addr,
1213 NL80211_TDLS_SETUP,
1214 0, GFP_ATOMIC);
1215 peer->do_setup = false;
1216 priv->check_tdls_tx = false;
1217 } else if (peer->failure_count <
1218 MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1219 peer->do_discover) {
1220 mwifiex_send_tdls_data_frame(priv,
1221 peer->mac_addr,
1222 WLAN_TDLS_DISCOVERY_REQUEST,
1223 1, 0, NULL, 0);
1224 peer->do_discover = false;
1225 }
1226 }
1227 }
1228 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1229
1230 return 0;
1231 }
1232
1233 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1234 {
1235 struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1236 unsigned long flags;
1237
1238 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1239 list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1240 list_del(&peer->list);
1241 kfree(peer);
1242 }
1243
1244 INIT_LIST_HEAD(&priv->auto_tdls_list);
1245 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1246 priv->check_tdls_tx = false;
1247 }
1248
1249 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1250 {
1251 struct mwifiex_auto_tdls_peer *tdls_peer;
1252 unsigned long flags;
1253
1254 if (!priv->adapter->auto_tdls)
1255 return;
1256
1257 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1258 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1259 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1260 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1261 tdls_peer->rssi_jiffies = jiffies;
1262 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1263 return;
1264 }
1265 }
1266
1267 /* create new TDLS peer */
1268 tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1269 if (tdls_peer) {
1270 ether_addr_copy(tdls_peer->mac_addr, mac);
1271 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1272 tdls_peer->rssi_jiffies = jiffies;
1273 INIT_LIST_HEAD(&tdls_peer->list);
1274 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1275 dev_dbg(priv->adapter->dev, "Add auto TDLS peer= %pM to list\n",
1276 mac);
1277 }
1278
1279 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1280 }
1281
1282 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1283 const u8 *mac, u8 link_status)
1284 {
1285 struct mwifiex_auto_tdls_peer *peer;
1286 unsigned long flags;
1287
1288 if (!priv->adapter->auto_tdls)
1289 return;
1290
1291 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1292 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1293 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1294 if ((link_status == TDLS_NOT_SETUP) &&
1295 (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1296 peer->failure_count++;
1297 else if (link_status == TDLS_SETUP_COMPLETE)
1298 peer->failure_count = 0;
1299
1300 peer->tdls_status = link_status;
1301 break;
1302 }
1303 }
1304 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1305 }
1306
1307 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1308 u8 *mac, s8 snr, s8 nflr)
1309 {
1310 struct mwifiex_auto_tdls_peer *peer;
1311 unsigned long flags;
1312
1313 if (!priv->adapter->auto_tdls)
1314 return;
1315
1316 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1317 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1318 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1319 peer->rssi = nflr - snr;
1320 peer->rssi_jiffies = jiffies;
1321 break;
1322 }
1323 }
1324 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1325 }
1326
1327 void mwifiex_check_auto_tdls(unsigned long context)
1328 {
1329 struct mwifiex_private *priv = (struct mwifiex_private *)context;
1330 struct mwifiex_auto_tdls_peer *tdls_peer;
1331 unsigned long flags;
1332 u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1333
1334 if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1335 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1336 __func__);
1337 return;
1338 }
1339
1340 if (unlikely(!priv->adapter->auto_tdls))
1341 return;
1342
1343 if (!priv->auto_tdls_timer_active) {
1344 dev_dbg(priv->adapter->dev,
1345 "auto TDLS timer inactive; return");
1346 return;
1347 }
1348
1349 priv->check_tdls_tx = false;
1350
1351 if (list_empty(&priv->auto_tdls_list)) {
1352 mod_timer(&priv->auto_tdls_timer,
1353 jiffies +
1354 msecs_to_jiffies(MWIFIEX_TIMER_10S));
1355 return;
1356 }
1357
1358 spin_lock_irqsave(&priv->auto_tdls_lock, flags);
1359 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1360 if ((jiffies - tdls_peer->rssi_jiffies) >
1361 (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1362 tdls_peer->rssi = 0;
1363 tdls_peer->do_discover = true;
1364 priv->check_tdls_tx = true;
1365 }
1366
1367 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1368 !tdls_peer->rssi) &&
1369 tdls_peer->tdls_status == TDLS_SETUP_COMPLETE) {
1370 tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1371 dev_dbg(priv->adapter->dev,
1372 "teardown TDLS link,peer=%pM rssi=%d\n",
1373 tdls_peer->mac_addr, -tdls_peer->rssi);
1374 tdls_peer->do_discover = true;
1375 priv->check_tdls_tx = true;
1376 cfg80211_tdls_oper_request(priv->netdev,
1377 tdls_peer->mac_addr,
1378 NL80211_TDLS_TEARDOWN,
1379 reason, GFP_ATOMIC);
1380 } else if (tdls_peer->rssi &&
1381 tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1382 tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1383 tdls_peer->failure_count <
1384 MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1385 priv->check_tdls_tx = true;
1386 tdls_peer->do_setup = true;
1387 dev_dbg(priv->adapter->dev,
1388 "check TDLS with peer=%pM rssi=%d\n",
1389 tdls_peer->mac_addr, -tdls_peer->rssi);
1390 }
1391 }
1392 spin_unlock_irqrestore(&priv->auto_tdls_lock, flags);
1393
1394 mod_timer(&priv->auto_tdls_timer,
1395 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1396 }
1397
1398 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1399 {
1400 init_timer(&priv->auto_tdls_timer);
1401 priv->auto_tdls_timer.function = mwifiex_check_auto_tdls;
1402 priv->auto_tdls_timer.data = (unsigned long)priv;
1403 priv->auto_tdls_timer_active = true;
1404 mod_timer(&priv->auto_tdls_timer,
1405 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1406 }
1407
1408 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1409 {
1410 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1411 priv->adapter->auto_tdls &&
1412 priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1413 priv->auto_tdls_timer_active = false;
1414 del_timer(&priv->auto_tdls_timer);
1415 mwifiex_flush_auto_tdls_list(priv);
1416 }
1417 }
Linux kernel - Deliverables
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