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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
28static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv,
29 const u8 *mac, u8 status)
30{
31 struct mwifiex_ra_list_tbl *ra_list;
32 struct list_head *tid_list;
33 struct sk_buff *skb, *tmp;
34 struct mwifiex_txinfo *tx_info;
35 unsigned long flags;
36 u32 tid;
37 u8 tid_down;
38
39 dev_dbg(priv->adapter->dev, "%s: %pM\n", __func__, mac);
40 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
41
42 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
43 if (!ether_addr_equal(mac, skb->data))
44 continue;
45
46 __skb_unlink(skb, &priv->tdls_txq);
47 tx_info = MWIFIEX_SKB_TXCB(skb);
48 tid = skb->priority;
49 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
50
51 if (status == TDLS_SETUP_COMPLETE) {
52 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac);
53 ra_list->tdls_link = true;
54 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
55 } else {
56 tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list;
57 if (!list_empty(tid_list))
58 ra_list = list_first_entry(tid_list,
59 struct mwifiex_ra_list_tbl, list);
60 else
61 ra_list = NULL;
62 tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
63 }
64
65 if (!ra_list) {
66 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
67 continue;
68 }
69
70 skb_queue_tail(&ra_list->skb_head, skb);
71
72 ra_list->ba_pkt_count++;
73 ra_list->total_pkt_count++;
74
75 if (atomic_read(&priv->wmm.highest_queued_prio) <
76 tos_to_tid_inv[tid_down])
77 atomic_set(&priv->wmm.highest_queued_prio,
78 tos_to_tid_inv[tid_down]);
79
80 atomic_inc(&priv->wmm.tx_pkts_queued);
81 }
82
83 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
84 return;
85}
86
87static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv,
88 const u8 *mac)
89{
90 struct mwifiex_ra_list_tbl *ra_list;
91 struct list_head *ra_list_head;
92 struct sk_buff *skb, *tmp;
93 unsigned long flags;
94 int i;
95
96 dev_dbg(priv->adapter->dev, "%s: %pM\n", __func__, mac);
97 spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
98
99 for (i = 0; i < MAX_NUM_TID; i++) {
100 if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
101 ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
102 list_for_each_entry(ra_list, ra_list_head, list) {
103 skb_queue_walk_safe(&ra_list->skb_head, skb,
104 tmp) {
105 if (!ether_addr_equal(mac, skb->data))
106 continue;
107 __skb_unlink(skb, &ra_list->skb_head);
108 atomic_dec(&priv->wmm.tx_pkts_queued);
109 ra_list->total_pkt_count--;
110 skb_queue_tail(&priv->tdls_txq, skb);
111 }
112 }
113 }
114 }
115
116 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
117 return;
118}
119
120
121static int
122mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
123 struct sk_buff *skb)
124{
125 u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
126 u16 rates_size, supp_rates_size, ext_rates_size;
127
128 memset(rates, 0, sizeof(rates));
129 rates_size = mwifiex_get_supported_rates(priv, rates);
130
131 supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
132
133 if (skb_tailroom(skb) < rates_size + 4) {
134 dev_err(priv->adapter->dev,
135 "Insuffient space while adding rates\n");
136 return -ENOMEM;
137 }
138
139 pos = skb_put(skb, supp_rates_size + 2);
140 *pos++ = WLAN_EID_SUPP_RATES;
141 *pos++ = supp_rates_size;
142 memcpy(pos, rates, supp_rates_size);
143
144 if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
145 ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
146 pos = skb_put(skb, ext_rates_size + 2);
147 *pos++ = WLAN_EID_EXT_SUPP_RATES;
148 *pos++ = ext_rates_size;
149 memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
150 ext_rates_size);
151 }
152
153 return 0;
154}
155
156static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
157 struct sk_buff *skb)
158{
159 struct ieee_types_assoc_rsp *assoc_rsp;
160 u8 *pos;
161
162 assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
163 pos = (void *)skb_put(skb, 4);
164 *pos++ = WLAN_EID_AID;
165 *pos++ = 2;
166 *pos++ = le16_to_cpu(assoc_rsp->a_id);
167
168 return;
169}
170
171static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
172 struct sk_buff *skb)
173{
174 struct ieee80211_vht_cap vht_cap;
175 u8 *pos;
176
177 pos = (void *)skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
178 *pos++ = WLAN_EID_VHT_CAPABILITY;
179 *pos++ = sizeof(struct ieee80211_vht_cap);
180
181 memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
182
183 mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
184 memcpy(pos, &vht_cap, sizeof(vht_cap));
185
186 return 0;
187}
188
189static int
190mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
191 u8 vht_enabled, struct sk_buff *skb)
192{
193 struct ieee80211_ht_operation *ht_oper;
194 struct mwifiex_sta_node *sta_ptr;
195 struct mwifiex_bssdescriptor *bss_desc =
196 &priv->curr_bss_params.bss_descriptor;
197 u8 *pos;
198
199 sta_ptr = mwifiex_get_sta_entry(priv, mac);
200 if (unlikely(!sta_ptr)) {
201 dev_warn(priv->adapter->dev,
202 "TDLS peer station not found in list\n");
203 return -1;
204 }
205
206 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
207 *pos++ = WLAN_EID_HT_OPERATION;
208 *pos++ = sizeof(struct ieee80211_ht_operation);
209 ht_oper = (void *)pos;
210
211 ht_oper->primary_chan = bss_desc->channel;
212
213
214 if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
215 bss_desc->bcn_ht_cap &&
216 ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
217 ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
218
219 if (vht_enabled) {
220 ht_oper->ht_param =
221 mwifiex_get_sec_chan_offset(bss_desc->channel);
222 ht_oper->ht_param |= BIT(2);
223 }
224
225 memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
226 sizeof(struct ieee80211_ht_operation));
227
228 return 0;
229}
230
231static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
232 const u8 *mac, struct sk_buff *skb)
233{
234 struct mwifiex_bssdescriptor *bss_desc;
235 struct ieee80211_vht_operation *vht_oper;
236 struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
237 struct mwifiex_sta_node *sta_ptr;
238 struct mwifiex_adapter *adapter = priv->adapter;
239 u8 supp_chwd_set, peer_supp_chwd_set;
240 u8 *pos, ap_supp_chwd_set, chan_bw;
241 u16 mcs_map_user, mcs_map_resp, mcs_map_result;
242 u16 mcs_user, mcs_resp, nss;
243 u32 usr_vht_cap_info;
244
245 bss_desc = &priv->curr_bss_params.bss_descriptor;
246
247 sta_ptr = mwifiex_get_sta_entry(priv, mac);
248 if (unlikely(!sta_ptr)) {
249 dev_warn(adapter->dev, "TDLS peer station not found in list\n");
250 return -1;
251 }
252
253 if (!mwifiex_is_bss_in_11ac_mode(priv)) {
254 if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
255 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
256 dev_dbg(adapter->dev,
257 "TDLS peer doesn't support wider bandwitdh\n");
258 return 0;
259 }
260 } else {
261 ap_vht_cap = bss_desc->bcn_vht_cap;
262 }
263
264 pos = (void *)skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
265 *pos++ = WLAN_EID_VHT_OPERATION;
266 *pos++ = sizeof(struct ieee80211_vht_operation);
267 vht_oper = (struct ieee80211_vht_operation *)pos;
268
269 if (bss_desc->bss_band & BAND_A)
270 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
271 else
272 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
273
274
275 vht_cap = &sta_ptr->tdls_cap.vhtcap;
276 supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
277 peer_supp_chwd_set =
278 GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
279 supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
280
281
282
283 if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
284 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
285 ap_supp_chwd_set =
286 GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
287 supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
288 }
289
290 switch (supp_chwd_set) {
291 case IEEE80211_VHT_CHANWIDTH_80MHZ:
292 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
293 break;
294 case IEEE80211_VHT_CHANWIDTH_160MHZ:
295 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
296 break;
297 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
298 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
299 break;
300 default:
301 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
302 break;
303 }
304
305 mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
306 mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
307 mcs_map_result = 0;
308
309 for (nss = 1; nss <= 8; nss++) {
310 mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
311 mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
312
313 if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
314 (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
315 SET_VHTNSSMCS(mcs_map_result, nss,
316 IEEE80211_VHT_MCS_NOT_SUPPORTED);
317 else
318 SET_VHTNSSMCS(mcs_map_result, nss,
319 min_t(u16, mcs_user, mcs_resp));
320 }
321
322 vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
323
324 switch (vht_oper->chan_width) {
325 case IEEE80211_VHT_CHANWIDTH_80MHZ:
326 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
327 break;
328 case IEEE80211_VHT_CHANWIDTH_160MHZ:
329 chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
330 break;
331 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
332 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
333 break;
334 default:
335 chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
336 break;
337 }
338 vht_oper->center_freq_seg1_idx =
339 mwifiex_get_center_freq_index(priv, BAND_AAC,
340 bss_desc->channel,
341 chan_bw);
342
343 return 0;
344}
345
346static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
347 struct sk_buff *skb)
348{
349 struct ieee_types_extcap *extcap;
350
351 extcap = (void *)skb_put(skb, sizeof(struct ieee_types_extcap));
352 extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
353 extcap->ieee_hdr.len = 8;
354 memset(extcap->ext_capab, 0, 8);
355 extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
356
357 if (priv->adapter->is_hw_11ac_capable)
358 extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
359}
360
361static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
362{
363 u8 *pos = (void *)skb_put(skb, 3);
364
365 *pos++ = WLAN_EID_QOS_CAPA;
366 *pos++ = 1;
367 *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
368}
369
370static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
371 const u8 *peer, u8 action_code,
372 u8 dialog_token,
373 u16 status_code, struct sk_buff *skb)
374{
375 struct ieee80211_tdls_data *tf;
376 int ret;
377 u16 capab;
378 struct ieee80211_ht_cap *ht_cap;
379 u8 radio, *pos;
380
381 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
382
383 tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
384 memcpy(tf->da, peer, ETH_ALEN);
385 memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
386 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
387 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
388
389 switch (action_code) {
390 case WLAN_TDLS_SETUP_REQUEST:
391 tf->category = WLAN_CATEGORY_TDLS;
392 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
393 skb_put(skb, sizeof(tf->u.setup_req));
394 tf->u.setup_req.dialog_token = dialog_token;
395 tf->u.setup_req.capability = cpu_to_le16(capab);
396 ret = mwifiex_tdls_append_rates_ie(priv, skb);
397 if (ret) {
398 dev_kfree_skb_any(skb);
399 return ret;
400 }
401
402 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
403 *pos++ = WLAN_EID_HT_CAPABILITY;
404 *pos++ = sizeof(struct ieee80211_ht_cap);
405 ht_cap = (void *)pos;
406 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
407 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
408 if (ret) {
409 dev_kfree_skb_any(skb);
410 return ret;
411 }
412
413 if (priv->adapter->is_hw_11ac_capable) {
414 ret = mwifiex_tdls_add_vht_capab(priv, skb);
415 if (ret) {
416 dev_kfree_skb_any(skb);
417 return ret;
418 }
419 mwifiex_tdls_add_aid(priv, skb);
420 }
421
422 mwifiex_tdls_add_ext_capab(priv, skb);
423 mwifiex_tdls_add_qos_capab(skb);
424 break;
425
426 case WLAN_TDLS_SETUP_RESPONSE:
427 tf->category = WLAN_CATEGORY_TDLS;
428 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
429 skb_put(skb, sizeof(tf->u.setup_resp));
430 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
431 tf->u.setup_resp.dialog_token = dialog_token;
432 tf->u.setup_resp.capability = cpu_to_le16(capab);
433 ret = mwifiex_tdls_append_rates_ie(priv, skb);
434 if (ret) {
435 dev_kfree_skb_any(skb);
436 return ret;
437 }
438
439 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
440 *pos++ = WLAN_EID_HT_CAPABILITY;
441 *pos++ = sizeof(struct ieee80211_ht_cap);
442 ht_cap = (void *)pos;
443 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
444 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
445 if (ret) {
446 dev_kfree_skb_any(skb);
447 return ret;
448 }
449
450 if (priv->adapter->is_hw_11ac_capable) {
451 ret = mwifiex_tdls_add_vht_capab(priv, skb);
452 if (ret) {
453 dev_kfree_skb_any(skb);
454 return ret;
455 }
456 mwifiex_tdls_add_aid(priv, skb);
457 }
458
459 mwifiex_tdls_add_ext_capab(priv, skb);
460 mwifiex_tdls_add_qos_capab(skb);
461 break;
462
463 case WLAN_TDLS_SETUP_CONFIRM:
464 tf->category = WLAN_CATEGORY_TDLS;
465 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
466 skb_put(skb, sizeof(tf->u.setup_cfm));
467 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
468 tf->u.setup_cfm.dialog_token = dialog_token;
469 if (priv->adapter->is_hw_11ac_capable) {
470 ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
471 if (ret) {
472 dev_kfree_skb_any(skb);
473 return ret;
474 }
475 ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
476 if (ret) {
477 dev_kfree_skb_any(skb);
478 return ret;
479 }
480 } else {
481 ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
482 if (ret) {
483 dev_kfree_skb_any(skb);
484 return ret;
485 }
486 }
487 break;
488
489 case WLAN_TDLS_TEARDOWN:
490 tf->category = WLAN_CATEGORY_TDLS;
491 tf->action_code = WLAN_TDLS_TEARDOWN;
492 skb_put(skb, sizeof(tf->u.teardown));
493 tf->u.teardown.reason_code = cpu_to_le16(status_code);
494 break;
495
496 case WLAN_TDLS_DISCOVERY_REQUEST:
497 tf->category = WLAN_CATEGORY_TDLS;
498 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
499 skb_put(skb, sizeof(tf->u.discover_req));
500 tf->u.discover_req.dialog_token = dialog_token;
501 break;
502 default:
503 dev_err(priv->adapter->dev, "Unknown TDLS frame type.\n");
504 return -EINVAL;
505 }
506
507 return 0;
508}
509
510static void
511mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
512 const u8 *peer, const u8 *bssid)
513{
514 struct ieee80211_tdls_lnkie *lnkid;
515
516 lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
517 lnkid->ie_type = WLAN_EID_LINK_ID;
518 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
519 sizeof(struct ieee_types_header);
520
521 memcpy(lnkid->bssid, bssid, ETH_ALEN);
522 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
523 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
524}
525
526int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
527 u8 action_code, u8 dialog_token,
528 u16 status_code, const u8 *extra_ies,
529 size_t extra_ies_len)
530{
531 struct sk_buff *skb;
532 struct mwifiex_txinfo *tx_info;
533 struct timeval tv;
534 int ret;
535 u16 skb_len;
536
537 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
538 max(sizeof(struct ieee80211_mgmt),
539 sizeof(struct ieee80211_tdls_data)) +
540 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
541 MWIFIEX_SUPPORTED_RATES +
542 3 +
543 sizeof(struct ieee_types_extcap) +
544 sizeof(struct ieee80211_ht_cap) +
545 sizeof(struct ieee_types_bss_co_2040) +
546 sizeof(struct ieee80211_ht_operation) +
547 sizeof(struct ieee80211_tdls_lnkie) +
548 extra_ies_len;
549
550 if (priv->adapter->is_hw_11ac_capable)
551 skb_len += sizeof(struct ieee_types_vht_cap) +
552 sizeof(struct ieee_types_vht_oper) +
553 sizeof(struct ieee_types_aid);
554
555 skb = dev_alloc_skb(skb_len);
556 if (!skb) {
557 dev_err(priv->adapter->dev,
558 "allocate skb failed for management frame\n");
559 return -ENOMEM;
560 }
561 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
562
563 switch (action_code) {
564 case WLAN_TDLS_SETUP_REQUEST:
565 case WLAN_TDLS_SETUP_CONFIRM:
566 case WLAN_TDLS_TEARDOWN:
567 case WLAN_TDLS_DISCOVERY_REQUEST:
568 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
569 dialog_token, status_code,
570 skb);
571 if (ret) {
572 dev_kfree_skb_any(skb);
573 return ret;
574 }
575 if (extra_ies_len)
576 memcpy(skb_put(skb, extra_ies_len), extra_ies,
577 extra_ies_len);
578 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
579 priv->cfg_bssid);
580 break;
581 case WLAN_TDLS_SETUP_RESPONSE:
582 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
583 dialog_token, status_code,
584 skb);
585 if (ret) {
586 dev_kfree_skb_any(skb);
587 return ret;
588 }
589 if (extra_ies_len)
590 memcpy(skb_put(skb, extra_ies_len), extra_ies,
591 extra_ies_len);
592 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
593 priv->cfg_bssid);
594 break;
595 }
596
597 switch (action_code) {
598 case WLAN_TDLS_SETUP_REQUEST:
599 case WLAN_TDLS_SETUP_RESPONSE:
600 skb->priority = MWIFIEX_PRIO_BK;
601 break;
602 default:
603 skb->priority = MWIFIEX_PRIO_VI;
604 break;
605 }
606
607 tx_info = MWIFIEX_SKB_TXCB(skb);
608 memset(tx_info, 0, sizeof(*tx_info));
609 tx_info->bss_num = priv->bss_num;
610 tx_info->bss_type = priv->bss_type;
611
612 do_gettimeofday(&tv);
613 skb->tstamp = timeval_to_ktime(tv);
614 mwifiex_queue_tx_pkt(priv, skb);
615
616 return 0;
617}
618
619static int
620mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
621 const u8 *peer,
622 u8 action_code, u8 dialog_token,
623 u16 status_code, struct sk_buff *skb)
624{
625 struct ieee80211_mgmt *mgmt;
626 u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
627 int ret;
628 u16 capab;
629 struct ieee80211_ht_cap *ht_cap;
630 u8 radio, *pos;
631
632 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
633
634 mgmt = (void *)skb_put(skb, offsetof(struct ieee80211_mgmt, u));
635
636 memset(mgmt, 0, 24);
637 memcpy(mgmt->da, peer, ETH_ALEN);
638 memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
639 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
640 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
641 IEEE80211_STYPE_ACTION);
642
643
644 pos = skb_put(skb, ETH_ALEN);
645
646 switch (action_code) {
647 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
648 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
649 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
650 mgmt->u.action.u.tdls_discover_resp.action_code =
651 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
652 mgmt->u.action.u.tdls_discover_resp.dialog_token =
653 dialog_token;
654 mgmt->u.action.u.tdls_discover_resp.capability =
655 cpu_to_le16(capab);
656
657 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
658 sizeof(mgmt->u.action.u.tdls_discover_resp));
659
660 memcpy(pos, bc_addr, ETH_ALEN);
661
662 ret = mwifiex_tdls_append_rates_ie(priv, skb);
663 if (ret) {
664 dev_kfree_skb_any(skb);
665 return ret;
666 }
667
668 pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
669 *pos++ = WLAN_EID_HT_CAPABILITY;
670 *pos++ = sizeof(struct ieee80211_ht_cap);
671 ht_cap = (void *)pos;
672 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
673 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
674 if (ret) {
675 dev_kfree_skb_any(skb);
676 return ret;
677 }
678
679 if (priv->adapter->is_hw_11ac_capable) {
680 ret = mwifiex_tdls_add_vht_capab(priv, skb);
681 if (ret) {
682 dev_kfree_skb_any(skb);
683 return ret;
684 }
685 mwifiex_tdls_add_aid(priv, skb);
686 }
687
688 mwifiex_tdls_add_ext_capab(priv, skb);
689 mwifiex_tdls_add_qos_capab(skb);
690 break;
691 default:
692 dev_err(priv->adapter->dev, "Unknown TDLS action frame type\n");
693 return -EINVAL;
694 }
695
696 return 0;
697}
698
699int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
700 u8 action_code, u8 dialog_token,
701 u16 status_code, const u8 *extra_ies,
702 size_t extra_ies_len)
703{
704 struct sk_buff *skb;
705 struct mwifiex_txinfo *tx_info;
706 struct timeval tv;
707 u8 *pos;
708 u32 pkt_type, tx_control;
709 u16 pkt_len, skb_len;
710
711 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
712 max(sizeof(struct ieee80211_mgmt),
713 sizeof(struct ieee80211_tdls_data)) +
714 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
715 MWIFIEX_SUPPORTED_RATES +
716 sizeof(struct ieee_types_extcap) +
717 sizeof(struct ieee80211_ht_cap) +
718 sizeof(struct ieee_types_bss_co_2040) +
719 sizeof(struct ieee80211_ht_operation) +
720 sizeof(struct ieee80211_tdls_lnkie) +
721 extra_ies_len +
722 3 +
723 ETH_ALEN;
724
725 if (priv->adapter->is_hw_11ac_capable)
726 skb_len += sizeof(struct ieee_types_vht_cap) +
727 sizeof(struct ieee_types_vht_oper) +
728 sizeof(struct ieee_types_aid);
729
730 skb = dev_alloc_skb(skb_len);
731 if (!skb) {
732 dev_err(priv->adapter->dev,
733 "allocate skb failed for management frame\n");
734 return -ENOMEM;
735 }
736
737 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
738
739 pkt_type = PKT_TYPE_MGMT;
740 tx_control = 0;
741 pos = skb_put(skb, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
742 memset(pos, 0, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
743 memcpy(pos, &pkt_type, sizeof(pkt_type));
744 memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
745
746 if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
747 dialog_token, status_code,
748 skb)) {
749 dev_kfree_skb_any(skb);
750 return -EINVAL;
751 }
752
753 if (extra_ies_len)
754 memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len);
755
756
757
758 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
759 priv->cfg_bssid);
760
761 skb->priority = MWIFIEX_PRIO_VI;
762
763 tx_info = MWIFIEX_SKB_TXCB(skb);
764 memset(tx_info, 0, sizeof(*tx_info));
765 tx_info->bss_num = priv->bss_num;
766 tx_info->bss_type = priv->bss_type;
767 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
768
769 pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
770 memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
771 sizeof(pkt_len));
772 do_gettimeofday(&tv);
773 skb->tstamp = timeval_to_ktime(tv);
774 mwifiex_queue_tx_pkt(priv, skb);
775
776 return 0;
777}
778
779
780
781
782void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
783 u8 *buf, int len)
784{
785 struct mwifiex_sta_node *sta_ptr;
786 u8 *peer, *pos, *end;
787 u8 i, action, basic;
788 int ie_len = 0;
789
790 if (len < (sizeof(struct ethhdr) + 3))
791 return;
792 if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
793 return;
794 if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
795 return;
796
797 peer = buf + ETH_ALEN;
798 action = *(buf + sizeof(struct ethhdr) + 2);
799
800
801 if (action > WLAN_TDLS_SETUP_CONFIRM)
802 return;
803
804 dev_dbg(priv->adapter->dev,
805 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
806
807 sta_ptr = mwifiex_add_sta_entry(priv, peer);
808 if (!sta_ptr)
809 return;
810
811 switch (action) {
812 case WLAN_TDLS_SETUP_REQUEST:
813 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
814 return;
815
816 pos = buf + sizeof(struct ethhdr) + 4;
817
818 sta_ptr->tdls_cap.capab = cpu_to_le16(*(u16 *)pos);
819 ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
820 pos += 2;
821 break;
822
823 case WLAN_TDLS_SETUP_RESPONSE:
824 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
825 return;
826
827 pos = buf + sizeof(struct ethhdr) + 6;
828 sta_ptr->tdls_cap.capab = cpu_to_le16(*(u16 *)pos);
829 ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
830 pos += 2;
831 break;
832
833 case WLAN_TDLS_SETUP_CONFIRM:
834 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
835 return;
836 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
837 ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
838 break;
839 default:
840 dev_warn(priv->adapter->dev, "Unknown TDLS frame type.\n");
841 return;
842 }
843
844 for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) {
845 if (pos + 2 + pos[1] > end)
846 break;
847
848 switch (*pos) {
849 case WLAN_EID_SUPP_RATES:
850 sta_ptr->tdls_cap.rates_len = pos[1];
851 for (i = 0; i < pos[1]; i++)
852 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
853 break;
854
855 case WLAN_EID_EXT_SUPP_RATES:
856 basic = sta_ptr->tdls_cap.rates_len;
857 for (i = 0; i < pos[1]; i++)
858 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
859 sta_ptr->tdls_cap.rates_len += pos[1];
860 break;
861 case WLAN_EID_HT_CAPABILITY:
862 memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,
863 sizeof(struct ieee80211_ht_cap));
864 sta_ptr->is_11n_enabled = 1;
865 break;
866 case WLAN_EID_HT_OPERATION:
867 memcpy(&sta_ptr->tdls_cap.ht_oper, pos,
868 sizeof(struct ieee80211_ht_operation));
869 break;
870 case WLAN_EID_BSS_COEX_2040:
871 sta_ptr->tdls_cap.coex_2040 = pos[2];
872 break;
873 case WLAN_EID_EXT_CAPABILITY:
874 memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
875 sizeof(struct ieee_types_header) +
876 min_t(u8, pos[1], 8));
877 break;
878 case WLAN_EID_RSN:
879 memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
880 sizeof(struct ieee_types_header) + pos[1]);
881 break;
882 case WLAN_EID_QOS_CAPA:
883 sta_ptr->tdls_cap.qos_info = pos[2];
884 break;
885 case WLAN_EID_VHT_OPERATION:
886 if (priv->adapter->is_hw_11ac_capable)
887 memcpy(&sta_ptr->tdls_cap.vhtoper, pos,
888 sizeof(struct ieee80211_vht_operation));
889 break;
890 case WLAN_EID_VHT_CAPABILITY:
891 if (priv->adapter->is_hw_11ac_capable) {
892 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos,
893 sizeof(struct ieee80211_vht_cap));
894 sta_ptr->is_11ac_enabled = 1;
895 }
896 break;
897 case WLAN_EID_AID:
898 if (priv->adapter->is_hw_11ac_capable)
899 sta_ptr->tdls_cap.aid =
900 le16_to_cpu(*(__le16 *)(pos + 2));
901 default:
902 break;
903 }
904 }
905
906 return;
907}
908
909static int
910mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
911{
912 struct mwifiex_sta_node *sta_ptr;
913 struct mwifiex_ds_tdls_oper tdls_oper;
914
915 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
916 sta_ptr = mwifiex_get_sta_entry(priv, peer);
917
918 if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
919 dev_err(priv->adapter->dev,
920 "link absent for peer %pM; cannot config\n", peer);
921 return -EINVAL;
922 }
923
924 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
925 tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
926 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
927 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
928}
929
930static int
931mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
932{
933 struct mwifiex_sta_node *sta_ptr;
934 struct mwifiex_ds_tdls_oper tdls_oper;
935
936 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
937 sta_ptr = mwifiex_get_sta_entry(priv, peer);
938
939 if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
940 dev_dbg(priv->adapter->dev,
941 "Setup already in progress for peer %pM\n", peer);
942 return 0;
943 }
944
945 sta_ptr = mwifiex_add_sta_entry(priv, peer);
946 if (!sta_ptr)
947 return -ENOMEM;
948
949 sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
950 mwifiex_hold_tdls_packets(priv, peer);
951 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
952 tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
953 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
954 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
955}
956
957static int
958mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
959{
960 struct mwifiex_sta_node *sta_ptr;
961 struct mwifiex_ds_tdls_oper tdls_oper;
962 unsigned long flags;
963
964 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
965 sta_ptr = mwifiex_get_sta_entry(priv, peer);
966
967 if (sta_ptr) {
968 if (sta_ptr->is_11n_enabled) {
969 mwifiex_11n_cleanup_reorder_tbl(priv);
970 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
971 flags);
972 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
973 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
974 flags);
975 }
976 mwifiex_del_sta_entry(priv, peer);
977 }
978
979 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
980 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
981 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
982 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
983 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
984}
985
986static int
987mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
988{
989 struct mwifiex_sta_node *sta_ptr;
990 struct ieee80211_mcs_info mcs;
991 unsigned long flags;
992 int i;
993
994 sta_ptr = mwifiex_get_sta_entry(priv, peer);
995
996 if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
997 dev_dbg(priv->adapter->dev,
998 "tdls: enable link %pM success\n", peer);
999
1000 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1001
1002 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1003 if (mcs.rx_mask[0] != 0xff)
1004 sta_ptr->is_11n_enabled = true;
1005 if (sta_ptr->is_11n_enabled) {
1006 if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1007 IEEE80211_HT_CAP_MAX_AMSDU)
1008 sta_ptr->max_amsdu =
1009 MWIFIEX_TX_DATA_BUF_SIZE_8K;
1010 else
1011 sta_ptr->max_amsdu =
1012 MWIFIEX_TX_DATA_BUF_SIZE_4K;
1013
1014 for (i = 0; i < MAX_NUM_TID; i++)
1015 sta_ptr->ampdu_sta[i] =
1016 priv->aggr_prio_tbl[i].ampdu_user;
1017 } else {
1018 for (i = 0; i < MAX_NUM_TID; i++)
1019 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1020 }
1021
1022 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1023 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1024 } else {
1025 dev_dbg(priv->adapter->dev,
1026 "tdls: enable link %pM failed\n", peer);
1027 if (sta_ptr) {
1028 mwifiex_11n_cleanup_reorder_tbl(priv);
1029 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1030 flags);
1031 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1032 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1033 flags);
1034 mwifiex_del_sta_entry(priv, peer);
1035 }
1036 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1037
1038 return -1;
1039 }
1040
1041 return 0;
1042}
1043
1044int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1045{
1046 switch (action) {
1047 case MWIFIEX_TDLS_ENABLE_LINK:
1048 return mwifiex_tdls_process_enable_link(priv, peer);
1049 case MWIFIEX_TDLS_DISABLE_LINK:
1050 return mwifiex_tdls_process_disable_link(priv, peer);
1051 case MWIFIEX_TDLS_CREATE_LINK:
1052 return mwifiex_tdls_process_create_link(priv, peer);
1053 case MWIFIEX_TDLS_CONFIG_LINK:
1054 return mwifiex_tdls_process_config_link(priv, peer);
1055 }
1056 return 0;
1057}
1058
1059int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1060{
1061 struct mwifiex_sta_node *sta_ptr;
1062
1063 sta_ptr = mwifiex_get_sta_entry(priv, mac);
1064 if (sta_ptr)
1065 return sta_ptr->tdls_status;
1066
1067 return TDLS_NOT_SETUP;
1068}
1069
1070void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1071{
1072 struct mwifiex_sta_node *sta_ptr;
1073 struct mwifiex_ds_tdls_oper tdls_oper;
1074 unsigned long flags;
1075
1076 if (list_empty(&priv->sta_list))
1077 return;
1078
1079 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1080 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1081
1082 if (sta_ptr->is_11n_enabled) {
1083 mwifiex_11n_cleanup_reorder_tbl(priv);
1084 spin_lock_irqsave(&priv->wmm.ra_list_spinlock,
1085 flags);
1086 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1087 spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
1088 flags);
1089 }
1090
1091 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1092 TDLS_LINK_TEARDOWN);
1093 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1094 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1095 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1096 HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1097 dev_warn(priv->adapter->dev,
1098 "Disable link failed for TDLS peer %pM",
1099 sta_ptr->mac_addr);
1100 }
1101
1102 mwifiex_del_all_sta_list(priv);
1103}
1104
