?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / wireless / marvell / mwifiex / tdls.c
blob97bb87c3676bb769f5b0712784fdec9debc5c1b8
1 /*
2 * NXP Wireless LAN device driver: TDLS handling
3 *
4 * Copyright 2011-2020 NXP
5 *
6 * This software file (the "File") is distributed by NXP
7 * under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available on the worldwide web at
11 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
12 *
13 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
14 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
15 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
16 * this warranty disclaimer.
17 */
18
19 #include "main.h"
20 #include "wmm.h"
21 #include "11n.h"
22 #include "11n_rxreorder.h"
23 #include "11ac.h"
24
25 #define TDLS_REQ_FIX_LEN 6
26 #define TDLS_RESP_FIX_LEN 8
27 #define TDLS_CONFIRM_FIX_LEN 6
28 #define MWIFIEX_TDLS_WMM_INFO_SIZE 7
29
30 static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv,
31 const u8 *mac, u8 status)
32 {
33 struct mwifiex_ra_list_tbl *ra_list;
34 struct list_head *tid_list;
35 struct sk_buff *skb, *tmp;
36 struct mwifiex_txinfo *tx_info;
37 u32 tid;
38 u8 tid_down;
39
40 mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
41 spin_lock_bh(&priv->wmm.ra_list_spinlock);
42
43 skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) {
44 if (!ether_addr_equal(mac, skb->data))
45 continue;
46
47 __skb_unlink(skb, &priv->tdls_txq);
48 tx_info = MWIFIEX_SKB_TXCB(skb);
49 tid = skb->priority;
50 tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
51
52 if (mwifiex_is_tdls_link_setup(status)) {
53 ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac);
54 ra_list->tdls_link = true;
55 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
56 } else {
57 tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list;
58 ra_list = list_first_entry_or_null(tid_list,
59 struct mwifiex_ra_list_tbl, list);
60 tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT;
61 }
62
63 if (!ra_list) {
64 mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
65 continue;
66 }
67
68 skb_queue_tail(&ra_list->skb_head, skb);
69
70 ra_list->ba_pkt_count++;
71 ra_list->total_pkt_count++;
72
73 if (atomic_read(&priv->wmm.highest_queued_prio) <
74 tos_to_tid_inv[tid_down])
75 atomic_set(&priv->wmm.highest_queued_prio,
76 tos_to_tid_inv[tid_down]);
77
78 atomic_inc(&priv->wmm.tx_pkts_queued);
79 }
80
81 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
82 return;
83 }
84
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 int i;
92
93 mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac);
94 spin_lock_bh(&priv->wmm.ra_list_spinlock);
95
96 for (i = 0; i < MAX_NUM_TID; i++) {
97 if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) {
98 ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list;
99 list_for_each_entry(ra_list, ra_list_head, list) {
100 skb_queue_walk_safe(&ra_list->skb_head, skb,
101 tmp) {
102 if (!ether_addr_equal(mac, skb->data))
103 continue;
104 __skb_unlink(skb, &ra_list->skb_head);
105 atomic_dec(&priv->wmm.tx_pkts_queued);
106 ra_list->total_pkt_count--;
107 skb_queue_tail(&priv->tdls_txq, skb);
108 }
109 }
110 }
111 }
112
113 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
114 return;
115 }
116
117 /* This function appends rate TLV to scan config command. */
118 static int
119 mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv,
120 struct sk_buff *skb)
121 {
122 u8 rates[MWIFIEX_SUPPORTED_RATES], *pos;
123 u16 rates_size, supp_rates_size, ext_rates_size;
124
125 memset(rates, 0, sizeof(rates));
126 rates_size = mwifiex_get_supported_rates(priv, rates);
127
128 supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES);
129
130 if (skb_tailroom(skb) < rates_size + 4) {
131 mwifiex_dbg(priv->adapter, ERROR,
132 "Insufficient space while adding rates\n");
133 return -ENOMEM;
134 }
135
136 pos = skb_put(skb, supp_rates_size + 2);
137 *pos++ = WLAN_EID_SUPP_RATES;
138 *pos++ = supp_rates_size;
139 memcpy(pos, rates, supp_rates_size);
140
141 if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) {
142 ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES;
143 pos = skb_put(skb, ext_rates_size + 2);
144 *pos++ = WLAN_EID_EXT_SUPP_RATES;
145 *pos++ = ext_rates_size;
146 memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES,
147 ext_rates_size);
148 }
149
150 return 0;
151 }
152
153 static void mwifiex_tdls_add_aid(struct mwifiex_private *priv,
154 struct sk_buff *skb)
155 {
156 struct ieee_types_assoc_rsp *assoc_rsp;
157 u8 *pos;
158
159 assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf;
160 pos = skb_put(skb, 4);
161 *pos++ = WLAN_EID_AID;
162 *pos++ = 2;
163 memcpy(pos, &assoc_rsp->a_id, sizeof(assoc_rsp->a_id));
164
165 return;
166 }
167
168 static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv,
169 struct sk_buff *skb)
170 {
171 struct ieee80211_vht_cap vht_cap;
172 u8 *pos;
173
174 pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2);
175 *pos++ = WLAN_EID_VHT_CAPABILITY;
176 *pos++ = sizeof(struct ieee80211_vht_cap);
177
178 memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap));
179
180 mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band);
181 memcpy(pos, &vht_cap, sizeof(vht_cap));
182
183 return 0;
184 }
185
186 static int
187 mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac,
188 u8 vht_enabled, struct sk_buff *skb)
189 {
190 struct ieee80211_ht_operation *ht_oper;
191 struct mwifiex_sta_node *sta_ptr;
192 struct mwifiex_bssdescriptor *bss_desc =
193 &priv->curr_bss_params.bss_descriptor;
194 u8 *pos;
195
196 sta_ptr = mwifiex_get_sta_entry(priv, mac);
197 if (unlikely(!sta_ptr)) {
198 mwifiex_dbg(priv->adapter, ERROR,
199 "TDLS peer station not found in list\n");
200 return -1;
201 }
202
203 if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) {
204 mwifiex_dbg(priv->adapter, WARN,
205 "TDLS peer doesn't support ht capabilities\n");
206 return 0;
207 }
208
209 pos = skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2);
210 *pos++ = WLAN_EID_HT_OPERATION;
211 *pos++ = sizeof(struct ieee80211_ht_operation);
212 ht_oper = (void *)pos;
213
214 ht_oper->primary_chan = bss_desc->channel;
215
216 /* follow AP's channel bandwidth */
217 if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&
218 bss_desc->bcn_ht_cap &&
219 ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))
220 ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param;
221
222 if (vht_enabled) {
223 ht_oper->ht_param =
224 mwifiex_get_sec_chan_offset(bss_desc->channel);
225 ht_oper->ht_param |= BIT(2);
226 }
227
228 memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper,
229 sizeof(struct ieee80211_ht_operation));
230
231 return 0;
232 }
233
234 static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv,
235 const u8 *mac, struct sk_buff *skb)
236 {
237 struct mwifiex_bssdescriptor *bss_desc;
238 struct ieee80211_vht_operation *vht_oper;
239 struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL;
240 struct mwifiex_sta_node *sta_ptr;
241 struct mwifiex_adapter *adapter = priv->adapter;
242 u8 supp_chwd_set, peer_supp_chwd_set;
243 u8 *pos, ap_supp_chwd_set, chan_bw;
244 u16 mcs_map_user, mcs_map_resp, mcs_map_result;
245 u16 mcs_user, mcs_resp, nss;
246 u32 usr_vht_cap_info;
247
248 bss_desc = &priv->curr_bss_params.bss_descriptor;
249
250 sta_ptr = mwifiex_get_sta_entry(priv, mac);
251 if (unlikely(!sta_ptr)) {
252 mwifiex_dbg(adapter, ERROR,
253 "TDLS peer station not found in list\n");
254 return -1;
255 }
256
257 if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) {
258 mwifiex_dbg(adapter, WARN,
259 "TDLS peer doesn't support vht capabilities\n");
260 return 0;
261 }
262
263 if (!mwifiex_is_bss_in_11ac_mode(priv)) {
264 if (sta_ptr->tdls_cap.extcap.ext_capab[7] &
265 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
266 mwifiex_dbg(adapter, WARN,
267 "TDLS peer doesn't support wider bandwidth\n");
268 return 0;
269 }
270 } else {
271 ap_vht_cap = bss_desc->bcn_vht_cap;
272 }
273
274 pos = skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2);
275 *pos++ = WLAN_EID_VHT_OPERATION;
276 *pos++ = sizeof(struct ieee80211_vht_operation);
277 vht_oper = (struct ieee80211_vht_operation *)pos;
278
279 if (bss_desc->bss_band & BAND_A)
280 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a;
281 else
282 usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg;
283
284 /* find the minimum bandwidth between AP/TDLS peers */
285 vht_cap = &sta_ptr->tdls_cap.vhtcap;
286 supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info);
287 peer_supp_chwd_set =
288 GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info));
289 supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set);
290
291 /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */
292
293 if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] &
294 WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) {
295 ap_supp_chwd_set =
296 GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info));
297 supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set);
298 }
299
300 switch (supp_chwd_set) {
301 case IEEE80211_VHT_CHANWIDTH_80MHZ:
302 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ;
303 break;
304 case IEEE80211_VHT_CHANWIDTH_160MHZ:
305 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ;
306 break;
307 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
308 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ;
309 break;
310 default:
311 vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT;
312 break;
313 }
314
315 mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support);
316 mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map);
317 mcs_map_result = 0;
318
319 for (nss = 1; nss <= 8; nss++) {
320 mcs_user = GET_VHTNSSMCS(mcs_map_user, nss);
321 mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss);
322
323 if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) ||
324 (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED))
325 SET_VHTNSSMCS(mcs_map_result, nss,
326 IEEE80211_VHT_MCS_NOT_SUPPORTED);
327 else
328 SET_VHTNSSMCS(mcs_map_result, nss,
329 min_t(u16, mcs_user, mcs_resp));
330 }
331
332 vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result);
333
334 switch (vht_oper->chan_width) {
335 case IEEE80211_VHT_CHANWIDTH_80MHZ:
336 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
337 break;
338 case IEEE80211_VHT_CHANWIDTH_160MHZ:
339 chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ;
340 break;
341 case IEEE80211_VHT_CHANWIDTH_80P80MHZ:
342 chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ;
343 break;
344 default:
345 chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT;
346 break;
347 }
348 vht_oper->center_freq_seg0_idx =
349 mwifiex_get_center_freq_index(priv, BAND_AAC,
350 bss_desc->channel,
351 chan_bw);
352
353 return 0;
354 }
355
356 static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv,
357 struct sk_buff *skb)
358 {
359 struct ieee_types_extcap *extcap;
360
361 extcap = skb_put(skb, sizeof(struct ieee_types_extcap));
362 extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY;
363 extcap->ieee_hdr.len = 8;
364 memset(extcap->ext_capab, 0, 8);
365 extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED;
366 extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH;
367
368 if (priv->adapter->is_hw_11ac_capable)
369 extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED;
370 }
371
372 static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb)
373 {
374 u8 *pos = skb_put(skb, 3);
375
376 *pos++ = WLAN_EID_QOS_CAPA;
377 *pos++ = 1;
378 *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB;
379 }
380
381 static void
382 mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb)
383 {
384 struct ieee80211_wmm_param_ie *wmm;
385 u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00};
386 u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00};
387 u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00};
388 u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00};
389
390 wmm = skb_put_zero(skb, sizeof(*wmm));
391
392 wmm->element_id = WLAN_EID_VENDOR_SPECIFIC;
393 wmm->len = sizeof(*wmm) - 2;
394 wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */
395 wmm->oui[1] = 0x50;
396 wmm->oui[2] = 0xf2;
397 wmm->oui_type = 2; /* WME */
398 wmm->oui_subtype = 1; /* WME param */
399 wmm->version = 1; /* WME ver */
400 wmm->qos_info = 0; /* U-APSD not in use */
401
402 /* use default WMM AC parameters for TDLS link*/
403 memcpy(&wmm->ac[0], ac_be, sizeof(ac_be));
404 memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk));
405 memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi));
406 memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo));
407 }
408
409 static void
410 mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb,
411 u8 qosinfo)
412 {
413 u8 *buf;
414
415 buf = skb_put(skb,
416 MWIFIEX_TDLS_WMM_INFO_SIZE + sizeof(struct ieee_types_header));
417
418 *buf++ = WLAN_EID_VENDOR_SPECIFIC;
419 *buf++ = 7; /* len */
420 *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */
421 *buf++ = 0x50;
422 *buf++ = 0xf2;
423 *buf++ = 2; /* WME */
424 *buf++ = 0; /* WME info */
425 *buf++ = 1; /* WME ver */
426 *buf++ = qosinfo; /* U-APSD no in use */
427 }
428
429 static void mwifiex_tdls_add_bss_co_2040(struct sk_buff *skb)
430 {
431 struct ieee_types_bss_co_2040 *bssco;
432
433 bssco = skb_put(skb, sizeof(struct ieee_types_bss_co_2040));
434 bssco->ieee_hdr.element_id = WLAN_EID_BSS_COEX_2040;
435 bssco->ieee_hdr.len = sizeof(struct ieee_types_bss_co_2040) -
436 sizeof(struct ieee_types_header);
437 bssco->bss_2040co = 0x01;
438 }
439
440 static void mwifiex_tdls_add_supported_chan(struct sk_buff *skb)
441 {
442 struct ieee_types_generic *supp_chan;
443 u8 chan_supp[] = {1, 11};
444
445 supp_chan = skb_put(skb,
446 (sizeof(struct ieee_types_header) + sizeof(chan_supp)));
447 supp_chan->ieee_hdr.element_id = WLAN_EID_SUPPORTED_CHANNELS;
448 supp_chan->ieee_hdr.len = sizeof(chan_supp);
449 memcpy(supp_chan->data, chan_supp, sizeof(chan_supp));
450 }
451
452 static void mwifiex_tdls_add_oper_class(struct sk_buff *skb)
453 {
454 struct ieee_types_generic *reg_class;
455 u8 rc_list[] = {1,
456 1, 2, 3, 4, 12, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33};
457 reg_class = skb_put(skb,
458 (sizeof(struct ieee_types_header) + sizeof(rc_list)));
459 reg_class->ieee_hdr.element_id = WLAN_EID_SUPPORTED_REGULATORY_CLASSES;
460 reg_class->ieee_hdr.len = sizeof(rc_list);
461 memcpy(reg_class->data, rc_list, sizeof(rc_list));
462 }
463
464 static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv,
465 const u8 *peer, u8 action_code,
466 u8 dialog_token,
467 u16 status_code, struct sk_buff *skb)
468 {
469 struct ieee80211_tdls_data *tf;
470 int ret;
471 u16 capab;
472 struct ieee80211_ht_cap *ht_cap;
473 u8 radio, *pos;
474
475 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
476
477 tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u));
478 memcpy(tf->da, peer, ETH_ALEN);
479 memcpy(tf->sa, priv->curr_addr, ETH_ALEN);
480 tf->ether_type = cpu_to_be16(ETH_P_TDLS);
481 tf->payload_type = WLAN_TDLS_SNAP_RFTYPE;
482
483 switch (action_code) {
484 case WLAN_TDLS_SETUP_REQUEST:
485 tf->category = WLAN_CATEGORY_TDLS;
486 tf->action_code = WLAN_TDLS_SETUP_REQUEST;
487 skb_put(skb, sizeof(tf->u.setup_req));
488 tf->u.setup_req.dialog_token = dialog_token;
489 tf->u.setup_req.capability = cpu_to_le16(capab);
490 ret = mwifiex_tdls_append_rates_ie(priv, skb);
491 if (ret) {
492 dev_kfree_skb_any(skb);
493 return ret;
494 }
495
496 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
497 *pos++ = WLAN_EID_HT_CAPABILITY;
498 *pos++ = sizeof(struct ieee80211_ht_cap);
499 ht_cap = (void *)pos;
500 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
501 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
502 if (ret) {
503 dev_kfree_skb_any(skb);
504 return ret;
505 }
506
507 if (priv->adapter->is_hw_11ac_capable) {
508 ret = mwifiex_tdls_add_vht_capab(priv, skb);
509 if (ret) {
510 dev_kfree_skb_any(skb);
511 return ret;
512 }
513 mwifiex_tdls_add_aid(priv, skb);
514 }
515
516 mwifiex_tdls_add_ext_capab(priv, skb);
517 mwifiex_tdls_add_bss_co_2040(skb);
518 mwifiex_tdls_add_supported_chan(skb);
519 mwifiex_tdls_add_oper_class(skb);
520 mwifiex_add_wmm_info_ie(priv, skb, 0);
521 break;
522
523 case WLAN_TDLS_SETUP_RESPONSE:
524 tf->category = WLAN_CATEGORY_TDLS;
525 tf->action_code = WLAN_TDLS_SETUP_RESPONSE;
526 skb_put(skb, sizeof(tf->u.setup_resp));
527 tf->u.setup_resp.status_code = cpu_to_le16(status_code);
528 tf->u.setup_resp.dialog_token = dialog_token;
529 tf->u.setup_resp.capability = cpu_to_le16(capab);
530 ret = mwifiex_tdls_append_rates_ie(priv, skb);
531 if (ret) {
532 dev_kfree_skb_any(skb);
533 return ret;
534 }
535
536 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
537 *pos++ = WLAN_EID_HT_CAPABILITY;
538 *pos++ = sizeof(struct ieee80211_ht_cap);
539 ht_cap = (void *)pos;
540 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
541 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
542 if (ret) {
543 dev_kfree_skb_any(skb);
544 return ret;
545 }
546
547 if (priv->adapter->is_hw_11ac_capable) {
548 ret = mwifiex_tdls_add_vht_capab(priv, skb);
549 if (ret) {
550 dev_kfree_skb_any(skb);
551 return ret;
552 }
553 mwifiex_tdls_add_aid(priv, skb);
554 }
555
556 mwifiex_tdls_add_ext_capab(priv, skb);
557 mwifiex_tdls_add_bss_co_2040(skb);
558 mwifiex_tdls_add_supported_chan(skb);
559 mwifiex_tdls_add_oper_class(skb);
560 mwifiex_add_wmm_info_ie(priv, skb, 0);
561 break;
562
563 case WLAN_TDLS_SETUP_CONFIRM:
564 tf->category = WLAN_CATEGORY_TDLS;
565 tf->action_code = WLAN_TDLS_SETUP_CONFIRM;
566 skb_put(skb, sizeof(tf->u.setup_cfm));
567 tf->u.setup_cfm.status_code = cpu_to_le16(status_code);
568 tf->u.setup_cfm.dialog_token = dialog_token;
569
570 mwifiex_tdls_add_wmm_param_ie(priv, skb);
571 if (priv->adapter->is_hw_11ac_capable) {
572 ret = mwifiex_tdls_add_vht_oper(priv, peer, skb);
573 if (ret) {
574 dev_kfree_skb_any(skb);
575 return ret;
576 }
577 ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb);
578 if (ret) {
579 dev_kfree_skb_any(skb);
580 return ret;
581 }
582 } else {
583 ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb);
584 if (ret) {
585 dev_kfree_skb_any(skb);
586 return ret;
587 }
588 }
589 break;
590
591 case WLAN_TDLS_TEARDOWN:
592 tf->category = WLAN_CATEGORY_TDLS;
593 tf->action_code = WLAN_TDLS_TEARDOWN;
594 skb_put(skb, sizeof(tf->u.teardown));
595 tf->u.teardown.reason_code = cpu_to_le16(status_code);
596 break;
597
598 case WLAN_TDLS_DISCOVERY_REQUEST:
599 tf->category = WLAN_CATEGORY_TDLS;
600 tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST;
601 skb_put(skb, sizeof(tf->u.discover_req));
602 tf->u.discover_req.dialog_token = dialog_token;
603 break;
604 default:
605 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
606 return -EINVAL;
607 }
608
609 return 0;
610 }
611
612 static void
613 mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr,
614 const u8 *peer, const u8 *bssid)
615 {
616 struct ieee80211_tdls_lnkie *lnkid;
617
618 lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie));
619 lnkid->ie_type = WLAN_EID_LINK_ID;
620 lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) -
621 sizeof(struct ieee_types_header);
622
623 memcpy(lnkid->bssid, bssid, ETH_ALEN);
624 memcpy(lnkid->init_sta, src_addr, ETH_ALEN);
625 memcpy(lnkid->resp_sta, peer, ETH_ALEN);
626 }
627
628 int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer,
629 u8 action_code, u8 dialog_token,
630 u16 status_code, const u8 *extra_ies,
631 size_t extra_ies_len)
632 {
633 struct sk_buff *skb;
634 struct mwifiex_txinfo *tx_info;
635 int ret;
636 u16 skb_len;
637
638 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
639 max(sizeof(struct ieee80211_mgmt),
640 sizeof(struct ieee80211_tdls_data)) +
641 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
642 MWIFIEX_SUPPORTED_RATES +
643 3 + /* Qos Info */
644 sizeof(struct ieee_types_extcap) +
645 sizeof(struct ieee80211_ht_cap) +
646 sizeof(struct ieee_types_bss_co_2040) +
647 sizeof(struct ieee80211_ht_operation) +
648 sizeof(struct ieee80211_tdls_lnkie) +
649 (2 * (sizeof(struct ieee_types_header))) +
650 MWIFIEX_SUPPORTED_CHANNELS +
651 MWIFIEX_OPERATING_CLASSES +
652 sizeof(struct ieee80211_wmm_param_ie) +
653 extra_ies_len;
654
655 if (priv->adapter->is_hw_11ac_capable)
656 skb_len += sizeof(struct ieee_types_vht_cap) +
657 sizeof(struct ieee_types_vht_oper) +
658 sizeof(struct ieee_types_aid);
659
660 skb = dev_alloc_skb(skb_len);
661 if (!skb) {
662 mwifiex_dbg(priv->adapter, ERROR,
663 "allocate skb failed for management frame\n");
664 return -ENOMEM;
665 }
666 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
667
668 switch (action_code) {
669 case WLAN_TDLS_SETUP_REQUEST:
670 case WLAN_TDLS_SETUP_CONFIRM:
671 case WLAN_TDLS_TEARDOWN:
672 case WLAN_TDLS_DISCOVERY_REQUEST:
673 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
674 dialog_token, status_code,
675 skb);
676 if (ret) {
677 dev_kfree_skb_any(skb);
678 return ret;
679 }
680 if (extra_ies_len)
681 skb_put_data(skb, extra_ies, extra_ies_len);
682 mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer,
683 priv->cfg_bssid);
684 break;
685 case WLAN_TDLS_SETUP_RESPONSE:
686 ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code,
687 dialog_token, status_code,
688 skb);
689 if (ret) {
690 dev_kfree_skb_any(skb);
691 return ret;
692 }
693 if (extra_ies_len)
694 skb_put_data(skb, extra_ies, extra_ies_len);
695 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
696 priv->cfg_bssid);
697 break;
698 }
699
700 switch (action_code) {
701 case WLAN_TDLS_SETUP_REQUEST:
702 case WLAN_TDLS_SETUP_RESPONSE:
703 skb->priority = MWIFIEX_PRIO_BK;
704 break;
705 default:
706 skb->priority = MWIFIEX_PRIO_VI;
707 break;
708 }
709
710 tx_info = MWIFIEX_SKB_TXCB(skb);
711 memset(tx_info, 0, sizeof(*tx_info));
712 tx_info->bss_num = priv->bss_num;
713 tx_info->bss_type = priv->bss_type;
714
715 __net_timestamp(skb);
716 mwifiex_queue_tx_pkt(priv, skb);
717
718 /* Delay 10ms to make sure tdls setup confirm/teardown frame
719 * is received by peer
720 */
721 if (action_code == WLAN_TDLS_SETUP_CONFIRM ||
722 action_code == WLAN_TDLS_TEARDOWN)
723 msleep_interruptible(10);
724
725 return 0;
726 }
727
728 static int
729 mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv,
730 const u8 *peer,
731 u8 action_code, u8 dialog_token,
732 u16 status_code, struct sk_buff *skb)
733 {
734 struct ieee80211_mgmt *mgmt;
735 int ret;
736 u16 capab;
737 struct ieee80211_ht_cap *ht_cap;
738 u8 radio, *pos;
739
740 capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap;
741
742 mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u));
743
744 memset(mgmt, 0, 24);
745 memcpy(mgmt->da, peer, ETH_ALEN);
746 memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN);
747 memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN);
748 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
749 IEEE80211_STYPE_ACTION);
750
751 /* add address 4 */
752 pos = skb_put(skb, ETH_ALEN);
753
754 switch (action_code) {
755 case WLAN_PUB_ACTION_TDLS_DISCOVER_RES:
756 skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1);
757 mgmt->u.action.category = WLAN_CATEGORY_PUBLIC;
758 mgmt->u.action.u.tdls_discover_resp.action_code =
759 WLAN_PUB_ACTION_TDLS_DISCOVER_RES;
760 mgmt->u.action.u.tdls_discover_resp.dialog_token =
761 dialog_token;
762 mgmt->u.action.u.tdls_discover_resp.capability =
763 cpu_to_le16(capab);
764 /* move back for addr4 */
765 memmove(pos + ETH_ALEN, &mgmt->u.action.category,
766 sizeof(mgmt->u.action.u.tdls_discover_resp));
767 /* init address 4 */
768 eth_broadcast_addr(pos);
769
770 ret = mwifiex_tdls_append_rates_ie(priv, skb);
771 if (ret) {
772 dev_kfree_skb_any(skb);
773 return ret;
774 }
775
776 pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2);
777 *pos++ = WLAN_EID_HT_CAPABILITY;
778 *pos++ = sizeof(struct ieee80211_ht_cap);
779 ht_cap = (void *)pos;
780 radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
781 ret = mwifiex_fill_cap_info(priv, radio, ht_cap);
782 if (ret) {
783 dev_kfree_skb_any(skb);
784 return ret;
785 }
786
787 if (priv->adapter->is_hw_11ac_capable) {
788 ret = mwifiex_tdls_add_vht_capab(priv, skb);
789 if (ret) {
790 dev_kfree_skb_any(skb);
791 return ret;
792 }
793 mwifiex_tdls_add_aid(priv, skb);
794 }
795
796 mwifiex_tdls_add_ext_capab(priv, skb);
797 mwifiex_tdls_add_bss_co_2040(skb);
798 mwifiex_tdls_add_supported_chan(skb);
799 mwifiex_tdls_add_qos_capab(skb);
800 mwifiex_tdls_add_oper_class(skb);
801 break;
802 default:
803 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n");
804 return -EINVAL;
805 }
806
807 return 0;
808 }
809
810 int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer,
811 u8 action_code, u8 dialog_token,
812 u16 status_code, const u8 *extra_ies,
813 size_t extra_ies_len)
814 {
815 struct sk_buff *skb;
816 struct mwifiex_txinfo *tx_info;
817 u8 *pos;
818 u32 pkt_type, tx_control;
819 u16 pkt_len, skb_len;
820
821 skb_len = MWIFIEX_MIN_DATA_HEADER_LEN +
822 max(sizeof(struct ieee80211_mgmt),
823 sizeof(struct ieee80211_tdls_data)) +
824 MWIFIEX_MGMT_FRAME_HEADER_SIZE +
825 MWIFIEX_SUPPORTED_RATES +
826 sizeof(struct ieee_types_extcap) +
827 sizeof(struct ieee80211_ht_cap) +
828 sizeof(struct ieee_types_bss_co_2040) +
829 sizeof(struct ieee80211_ht_operation) +
830 sizeof(struct ieee80211_tdls_lnkie) +
831 extra_ies_len +
832 3 + /* Qos Info */
833 ETH_ALEN; /* Address4 */
834
835 if (priv->adapter->is_hw_11ac_capable)
836 skb_len += sizeof(struct ieee_types_vht_cap) +
837 sizeof(struct ieee_types_vht_oper) +
838 sizeof(struct ieee_types_aid);
839
840 skb = dev_alloc_skb(skb_len);
841 if (!skb) {
842 mwifiex_dbg(priv->adapter, ERROR,
843 "allocate skb failed for management frame\n");
844 return -ENOMEM;
845 }
846
847 skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
848
849 pkt_type = PKT_TYPE_MGMT;
850 tx_control = 0;
851 pos = skb_put_zero(skb,
852 MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
853 memcpy(pos, &pkt_type, sizeof(pkt_type));
854 memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control));
855
856 if (mwifiex_construct_tdls_action_frame(priv, peer, action_code,
857 dialog_token, status_code,
858 skb)) {
859 dev_kfree_skb_any(skb);
860 return -EINVAL;
861 }
862
863 if (extra_ies_len)
864 skb_put_data(skb, extra_ies, extra_ies_len);
865
866 /* the TDLS link IE is always added last we are the responder */
867
868 mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr,
869 priv->cfg_bssid);
870
871 skb->priority = MWIFIEX_PRIO_VI;
872
873 tx_info = MWIFIEX_SKB_TXCB(skb);
874 memset(tx_info, 0, sizeof(*tx_info));
875 tx_info->bss_num = priv->bss_num;
876 tx_info->bss_type = priv->bss_type;
877 tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
878
879 pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len);
880 memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len,
881 sizeof(pkt_len));
882 __net_timestamp(skb);
883 mwifiex_queue_tx_pkt(priv, skb);
884
885 return 0;
886 }
887
888 /* This function process tdls action frame from peer.
889 * Peer capabilities are stored into station node structure.
890 */
891 void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv,
892 u8 *buf, int len)
893 {
894 struct mwifiex_sta_node *sta_ptr;
895 u8 *peer, *pos, *end;
896 u8 i, action, basic;
897 u16 cap = 0;
898 int ies_len = 0;
899
900 if (len < (sizeof(struct ethhdr) + 3))
901 return;
902 if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE)
903 return;
904 if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS)
905 return;
906
907 peer = buf + ETH_ALEN;
908 action = *(buf + sizeof(struct ethhdr) + 2);
909 mwifiex_dbg(priv->adapter, DATA,
910 "rx:tdls action: peer=%pM, action=%d\n", peer, action);
911
912 switch (action) {
913 case WLAN_TDLS_SETUP_REQUEST:
914 if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN))
915 return;
916
917 pos = buf + sizeof(struct ethhdr) + 4;
918 /* payload 1+ category 1 + action 1 + dialog 1 */
919 cap = get_unaligned_le16(pos);
920 ies_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN;
921 pos += 2;
922 break;
923
924 case WLAN_TDLS_SETUP_RESPONSE:
925 if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN))
926 return;
927 /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/
928 pos = buf + sizeof(struct ethhdr) + 6;
929 cap = get_unaligned_le16(pos);
930 ies_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN;
931 pos += 2;
932 break;
933
934 case WLAN_TDLS_SETUP_CONFIRM:
935 if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN))
936 return;
937 pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN;
938 ies_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN;
939 break;
940 default:
941 mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n");
942 return;
943 }
944
945 sta_ptr = mwifiex_add_sta_entry(priv, peer);
946 if (!sta_ptr)
947 return;
948
949 sta_ptr->tdls_cap.capab = cpu_to_le16(cap);
950
951 for (end = pos + ies_len; pos + 1 < end; pos += 2 + pos[1]) {
952 u8 ie_len = pos[1];
953
954 if (pos + 2 + ie_len > end)
955 break;
956
957 switch (*pos) {
958 case WLAN_EID_SUPP_RATES:
959 if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
960 return;
961 sta_ptr->tdls_cap.rates_len = ie_len;
962 for (i = 0; i < ie_len; i++)
963 sta_ptr->tdls_cap.rates[i] = pos[i + 2];
964 break;
965
966 case WLAN_EID_EXT_SUPP_RATES:
967 if (ie_len > sizeof(sta_ptr->tdls_cap.rates))
968 return;
969 basic = sta_ptr->tdls_cap.rates_len;
970 if (ie_len > sizeof(sta_ptr->tdls_cap.rates) - basic)
971 return;
972 for (i = 0; i < ie_len; i++)
973 sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2];
974 sta_ptr->tdls_cap.rates_len += ie_len;
975 break;
976 case WLAN_EID_HT_CAPABILITY:
977 if (ie_len != sizeof(struct ieee80211_ht_cap))
978 return;
979 /* copy the ie's value into ht_capb*/
980 memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos + 2,
981 sizeof(struct ieee80211_ht_cap));
982 sta_ptr->is_11n_enabled = 1;
983 break;
984 case WLAN_EID_HT_OPERATION:
985 if (ie_len != sizeof(struct ieee80211_ht_operation))
986 return;
987 /* copy the ie's value into ht_oper*/
988 memcpy(&sta_ptr->tdls_cap.ht_oper, pos + 2,
989 sizeof(struct ieee80211_ht_operation));
990 break;
991 case WLAN_EID_BSS_COEX_2040:
992 if (ie_len != sizeof(pos[2]))
993 return;
994 sta_ptr->tdls_cap.coex_2040 = pos[2];
995 break;
996 case WLAN_EID_EXT_CAPABILITY:
997 if (ie_len < sizeof(struct ieee_types_header))
998 return;
999 if (ie_len > 8)
1000 return;
1001 memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos,
1002 sizeof(struct ieee_types_header) +
1003 min_t(u8, ie_len, 8));
1004 break;
1005 case WLAN_EID_RSN:
1006 if (ie_len < sizeof(struct ieee_types_header))
1007 return;
1008 if (ie_len > IEEE_MAX_IE_SIZE -
1009 sizeof(struct ieee_types_header))
1010 return;
1011 memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos,
1012 sizeof(struct ieee_types_header) +
1013 min_t(u8, ie_len, IEEE_MAX_IE_SIZE -
1014 sizeof(struct ieee_types_header)));
1015 break;
1016 case WLAN_EID_QOS_CAPA:
1017 if (ie_len != sizeof(pos[2]))
1018 return;
1019 sta_ptr->tdls_cap.qos_info = pos[2];
1020 break;
1021 case WLAN_EID_VHT_OPERATION:
1022 if (priv->adapter->is_hw_11ac_capable) {
1023 if (ie_len !=
1024 sizeof(struct ieee80211_vht_operation))
1025 return;
1026 /* copy the ie's value into vhtoper*/
1027 memcpy(&sta_ptr->tdls_cap.vhtoper, pos + 2,
1028 sizeof(struct ieee80211_vht_operation));
1029 }
1030 break;
1031 case WLAN_EID_VHT_CAPABILITY:
1032 if (priv->adapter->is_hw_11ac_capable) {
1033 if (ie_len != sizeof(struct ieee80211_vht_cap))
1034 return;
1035 /* copy the ie's value into vhtcap*/
1036 memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos + 2,
1037 sizeof(struct ieee80211_vht_cap));
1038 sta_ptr->is_11ac_enabled = 1;
1039 }
1040 break;
1041 case WLAN_EID_AID:
1042 if (priv->adapter->is_hw_11ac_capable) {
1043 if (ie_len != sizeof(u16))
1044 return;
1045 sta_ptr->tdls_cap.aid =
1046 get_unaligned_le16((pos + 2));
1047 }
1048 break;
1049 default:
1050 break;
1051 }
1052 }
1053
1054 return;
1055 }
1056
1057 static int
1058 mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer)
1059 {
1060 struct mwifiex_sta_node *sta_ptr;
1061 struct mwifiex_ds_tdls_oper tdls_oper;
1062
1063 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1064 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1065
1066 if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) {
1067 mwifiex_dbg(priv->adapter, ERROR,
1068 "link absent for peer %pM; cannot config\n", peer);
1069 return -EINVAL;
1070 }
1071
1072 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1073 tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK;
1074 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1075 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1076 }
1077
1078 static int
1079 mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer)
1080 {
1081 struct mwifiex_sta_node *sta_ptr;
1082 struct mwifiex_ds_tdls_oper tdls_oper;
1083
1084 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1085 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1086
1087 if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) {
1088 mwifiex_dbg(priv->adapter, WARN,
1089 "Setup already in progress for peer %pM\n", peer);
1090 return 0;
1091 }
1092
1093 sta_ptr = mwifiex_add_sta_entry(priv, peer);
1094 if (!sta_ptr)
1095 return -ENOMEM;
1096
1097 sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS;
1098 mwifiex_hold_tdls_packets(priv, peer);
1099 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1100 tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK;
1101 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1102 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1103 }
1104
1105 static int
1106 mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer)
1107 {
1108 struct mwifiex_sta_node *sta_ptr;
1109 struct mwifiex_ds_tdls_oper tdls_oper;
1110
1111 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1112 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1113
1114 if (sta_ptr) {
1115 if (sta_ptr->is_11n_enabled) {
1116 mwifiex_11n_cleanup_reorder_tbl(priv);
1117 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1118 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1119 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1120 }
1121 mwifiex_del_sta_entry(priv, peer);
1122 }
1123
1124 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1125 mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP);
1126 memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN);
1127 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1128 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1129 HostCmd_ACT_GEN_SET, 0, &tdls_oper, true);
1130 }
1131
1132 static int
1133 mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer)
1134 {
1135 struct mwifiex_sta_node *sta_ptr;
1136 struct ieee80211_mcs_info mcs;
1137 int i;
1138
1139 sta_ptr = mwifiex_get_sta_entry(priv, peer);
1140
1141 if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) {
1142 mwifiex_dbg(priv->adapter, MSG,
1143 "tdls: enable link %pM success\n", peer);
1144
1145 sta_ptr->tdls_status = TDLS_SETUP_COMPLETE;
1146
1147 mcs = sta_ptr->tdls_cap.ht_capb.mcs;
1148 if (mcs.rx_mask[0] != 0xff)
1149 sta_ptr->is_11n_enabled = true;
1150 if (sta_ptr->is_11n_enabled) {
1151 if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) &
1152 IEEE80211_HT_CAP_MAX_AMSDU)
1153 sta_ptr->max_amsdu =
1154 MWIFIEX_TX_DATA_BUF_SIZE_8K;
1155 else
1156 sta_ptr->max_amsdu =
1157 MWIFIEX_TX_DATA_BUF_SIZE_4K;
1158
1159 for (i = 0; i < MAX_NUM_TID; i++)
1160 sta_ptr->ampdu_sta[i] =
1161 priv->aggr_prio_tbl[i].ampdu_user;
1162 } else {
1163 for (i = 0; i < MAX_NUM_TID; i++)
1164 sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
1165 }
1166 if (sta_ptr->tdls_cap.extcap.ext_capab[3] &
1167 WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) {
1168 mwifiex_config_tdls_enable(priv);
1169 mwifiex_config_tdls_cs_params(priv);
1170 }
1171
1172 memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq));
1173 mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE);
1174 mwifiex_auto_tdls_update_peer_status(priv, peer,
1175 TDLS_SETUP_COMPLETE);
1176 } else {
1177 mwifiex_dbg(priv->adapter, ERROR,
1178 "tdls: enable link %pM failed\n", peer);
1179 if (sta_ptr) {
1180 mwifiex_11n_cleanup_reorder_tbl(priv);
1181 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1182 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1183 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1184 mwifiex_del_sta_entry(priv, peer);
1185 }
1186 mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN);
1187 mwifiex_auto_tdls_update_peer_status(priv, peer,
1188 TDLS_NOT_SETUP);
1189
1190 return -1;
1191 }
1192
1193 return 0;
1194 }
1195
1196 int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action)
1197 {
1198 switch (action) {
1199 case MWIFIEX_TDLS_ENABLE_LINK:
1200 return mwifiex_tdls_process_enable_link(priv, peer);
1201 case MWIFIEX_TDLS_DISABLE_LINK:
1202 return mwifiex_tdls_process_disable_link(priv, peer);
1203 case MWIFIEX_TDLS_CREATE_LINK:
1204 return mwifiex_tdls_process_create_link(priv, peer);
1205 case MWIFIEX_TDLS_CONFIG_LINK:
1206 return mwifiex_tdls_process_config_link(priv, peer);
1207 }
1208 return 0;
1209 }
1210
1211 int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac)
1212 {
1213 struct mwifiex_sta_node *sta_ptr;
1214
1215 sta_ptr = mwifiex_get_sta_entry(priv, mac);
1216 if (sta_ptr)
1217 return sta_ptr->tdls_status;
1218
1219 return TDLS_NOT_SETUP;
1220 }
1221
1222 int mwifiex_get_tdls_list(struct mwifiex_private *priv,
1223 struct tdls_peer_info *buf)
1224 {
1225 struct mwifiex_sta_node *sta_ptr;
1226 struct tdls_peer_info *peer = buf;
1227 int count = 0;
1228
1229 if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
1230 return 0;
1231
1232 /* make sure we are in station mode and connected */
1233 if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected))
1234 return 0;
1235
1236 spin_lock_bh(&priv->sta_list_spinlock);
1237 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1238 if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) {
1239 ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr);
1240 peer++;
1241 count++;
1242 if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED)
1243 break;
1244 }
1245 }
1246 spin_unlock_bh(&priv->sta_list_spinlock);
1247
1248 return count;
1249 }
1250
1251 void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv)
1252 {
1253 struct mwifiex_sta_node *sta_ptr;
1254 struct mwifiex_ds_tdls_oper tdls_oper;
1255
1256 if (list_empty(&priv->sta_list))
1257 return;
1258
1259 list_for_each_entry(sta_ptr, &priv->sta_list, list) {
1260 memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper));
1261
1262 if (sta_ptr->is_11n_enabled) {
1263 mwifiex_11n_cleanup_reorder_tbl(priv);
1264 spin_lock_bh(&priv->wmm.ra_list_spinlock);
1265 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
1266 spin_unlock_bh(&priv->wmm.ra_list_spinlock);
1267 }
1268
1269 mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr,
1270 TDLS_LINK_TEARDOWN);
1271 memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN);
1272 tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK;
1273 if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER,
1274 HostCmd_ACT_GEN_SET, 0, &tdls_oper, false))
1275 mwifiex_dbg(priv->adapter, ERROR,
1276 "Disable link failed for TDLS peer %pM",
1277 sta_ptr->mac_addr);
1278 }
1279
1280 mwifiex_del_all_sta_list(priv);
1281 }
1282
1283 int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb)
1284 {
1285 struct mwifiex_auto_tdls_peer *peer;
1286 u8 mac[ETH_ALEN];
1287
1288 ether_addr_copy(mac, skb->data);
1289
1290 spin_lock_bh(&priv->auto_tdls_lock);
1291 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1292 if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) {
1293 if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1294 peer->tdls_status == TDLS_NOT_SETUP &&
1295 (peer->failure_count <
1296 MWIFIEX_TDLS_MAX_FAIL_COUNT)) {
1297 peer->tdls_status = TDLS_SETUP_INPROGRESS;
1298 mwifiex_dbg(priv->adapter, INFO,
1299 "setup TDLS link, peer=%pM rssi=%d\n",
1300 peer->mac_addr, peer->rssi);
1301
1302 cfg80211_tdls_oper_request(priv->netdev,
1303 peer->mac_addr,
1304 NL80211_TDLS_SETUP,
1305 0, GFP_ATOMIC);
1306 peer->do_setup = false;
1307 priv->check_tdls_tx = false;
1308 } else if (peer->failure_count <
1309 MWIFIEX_TDLS_MAX_FAIL_COUNT &&
1310 peer->do_discover) {
1311 mwifiex_send_tdls_data_frame(priv,
1312 peer->mac_addr,
1313 WLAN_TDLS_DISCOVERY_REQUEST,
1314 1, 0, NULL, 0);
1315 peer->do_discover = false;
1316 }
1317 }
1318 }
1319 spin_unlock_bh(&priv->auto_tdls_lock);
1320
1321 return 0;
1322 }
1323
1324 void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv)
1325 {
1326 struct mwifiex_auto_tdls_peer *peer, *tmp_node;
1327
1328 spin_lock_bh(&priv->auto_tdls_lock);
1329 list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) {
1330 list_del(&peer->list);
1331 kfree(peer);
1332 }
1333
1334 INIT_LIST_HEAD(&priv->auto_tdls_list);
1335 spin_unlock_bh(&priv->auto_tdls_lock);
1336 priv->check_tdls_tx = false;
1337 }
1338
1339 void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac)
1340 {
1341 struct mwifiex_auto_tdls_peer *tdls_peer;
1342
1343 if (!priv->adapter->auto_tdls)
1344 return;
1345
1346 spin_lock_bh(&priv->auto_tdls_lock);
1347 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1348 if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) {
1349 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1350 tdls_peer->rssi_jiffies = jiffies;
1351 spin_unlock_bh(&priv->auto_tdls_lock);
1352 return;
1353 }
1354 }
1355
1356 /* create new TDLS peer */
1357 tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC);
1358 if (tdls_peer) {
1359 ether_addr_copy(tdls_peer->mac_addr, mac);
1360 tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS;
1361 tdls_peer->rssi_jiffies = jiffies;
1362 INIT_LIST_HEAD(&tdls_peer->list);
1363 list_add_tail(&tdls_peer->list, &priv->auto_tdls_list);
1364 mwifiex_dbg(priv->adapter, INFO,
1365 "Add auto TDLS peer= %pM to list\n", mac);
1366 }
1367
1368 spin_unlock_bh(&priv->auto_tdls_lock);
1369 }
1370
1371 void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv,
1372 const u8 *mac, u8 link_status)
1373 {
1374 struct mwifiex_auto_tdls_peer *peer;
1375
1376 if (!priv->adapter->auto_tdls)
1377 return;
1378
1379 spin_lock_bh(&priv->auto_tdls_lock);
1380 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1381 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1382 if ((link_status == TDLS_NOT_SETUP) &&
1383 (peer->tdls_status == TDLS_SETUP_INPROGRESS))
1384 peer->failure_count++;
1385 else if (mwifiex_is_tdls_link_setup(link_status))
1386 peer->failure_count = 0;
1387
1388 peer->tdls_status = link_status;
1389 break;
1390 }
1391 }
1392 spin_unlock_bh(&priv->auto_tdls_lock);
1393 }
1394
1395 void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv,
1396 u8 *mac, s8 snr, s8 nflr)
1397 {
1398 struct mwifiex_auto_tdls_peer *peer;
1399
1400 if (!priv->adapter->auto_tdls)
1401 return;
1402
1403 spin_lock_bh(&priv->auto_tdls_lock);
1404 list_for_each_entry(peer, &priv->auto_tdls_list, list) {
1405 if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) {
1406 peer->rssi = nflr - snr;
1407 peer->rssi_jiffies = jiffies;
1408 break;
1409 }
1410 }
1411 spin_unlock_bh(&priv->auto_tdls_lock);
1412 }
1413
1414 void mwifiex_check_auto_tdls(struct timer_list *t)
1415 {
1416 struct mwifiex_private *priv = from_timer(priv, t, auto_tdls_timer);
1417 struct mwifiex_auto_tdls_peer *tdls_peer;
1418 u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED;
1419
1420 if (WARN_ON_ONCE(!priv || !priv->adapter)) {
1421 pr_err("mwifiex: %s: adapter or private structure is NULL\n",
1422 __func__);
1423 return;
1424 }
1425
1426 if (unlikely(!priv->adapter->auto_tdls))
1427 return;
1428
1429 if (!priv->auto_tdls_timer_active) {
1430 mwifiex_dbg(priv->adapter, INFO,
1431 "auto TDLS timer inactive; return");
1432 return;
1433 }
1434
1435 priv->check_tdls_tx = false;
1436
1437 spin_lock_bh(&priv->auto_tdls_lock);
1438 list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) {
1439 if ((jiffies - tdls_peer->rssi_jiffies) >
1440 (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) {
1441 tdls_peer->rssi = 0;
1442 tdls_peer->do_discover = true;
1443 priv->check_tdls_tx = true;
1444 }
1445
1446 if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) ||
1447 !tdls_peer->rssi) &&
1448 mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) {
1449 tdls_peer->tdls_status = TDLS_LINK_TEARDOWN;
1450 mwifiex_dbg(priv->adapter, MSG,
1451 "teardown TDLS link,peer=%pM rssi=%d\n",
1452 tdls_peer->mac_addr, -tdls_peer->rssi);
1453 tdls_peer->do_discover = true;
1454 priv->check_tdls_tx = true;
1455 cfg80211_tdls_oper_request(priv->netdev,
1456 tdls_peer->mac_addr,
1457 NL80211_TDLS_TEARDOWN,
1458 reason, GFP_ATOMIC);
1459 } else if (tdls_peer->rssi &&
1460 tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH &&
1461 tdls_peer->tdls_status == TDLS_NOT_SETUP &&
1462 tdls_peer->failure_count <
1463 MWIFIEX_TDLS_MAX_FAIL_COUNT) {
1464 priv->check_tdls_tx = true;
1465 tdls_peer->do_setup = true;
1466 mwifiex_dbg(priv->adapter, INFO,
1467 "check TDLS with peer=%pM\t"
1468 "rssi=%d\n", tdls_peer->mac_addr,
1469 tdls_peer->rssi);
1470 }
1471 }
1472 spin_unlock_bh(&priv->auto_tdls_lock);
1473
1474 mod_timer(&priv->auto_tdls_timer,
1475 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1476 }
1477
1478 void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv)
1479 {
1480 timer_setup(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, 0);
1481 priv->auto_tdls_timer_active = true;
1482 mod_timer(&priv->auto_tdls_timer,
1483 jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S));
1484 }
1485
1486 void mwifiex_clean_auto_tdls(struct mwifiex_private *priv)
1487 {
1488 if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
1489 priv->adapter->auto_tdls &&
1490 priv->bss_type == MWIFIEX_BSS_TYPE_STA) {
1491 priv->auto_tdls_timer_active = false;
1492 del_timer(&priv->auto_tdls_timer);
1493 mwifiex_flush_auto_tdls_list(priv);
1494 }
1495 }
1496
1497 static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable)
1498 {
1499 struct mwifiex_tdls_config config;
1500
1501 config.enable = cpu_to_le16(enable);
1502 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1503 ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true);
1504 }
1505
1506 int mwifiex_config_tdls_enable(struct mwifiex_private *priv)
1507 {
1508 return mwifiex_config_tdls(priv, true);
1509 }
1510
1511 int mwifiex_config_tdls_disable(struct mwifiex_private *priv)
1512 {
1513 return mwifiex_config_tdls(priv, false);
1514 }
1515
1516 int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv)
1517 {
1518 struct mwifiex_tdls_config_cs_params config_tdls_cs_params;
1519
1520 config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME;
1521 config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK;
1522 config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK;
1523
1524 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1525 ACT_TDLS_CS_PARAMS, 0,
1526 &config_tdls_cs_params, true);
1527 }
1528
1529 int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac)
1530 {
1531 struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params;
1532
1533 ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac);
1534
1535 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1536 ACT_TDLS_CS_STOP, 0,
1537 &stop_tdls_cs_params, true);
1538 }
1539
1540 int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac,
1541 u8 primary_chan, u8 second_chan_offset, u8 band)
1542 {
1543 struct mwifiex_tdls_init_cs_params start_tdls_cs_params;
1544
1545 ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac);
1546 start_tdls_cs_params.primary_chan = primary_chan;
1547 start_tdls_cs_params.second_chan_offset = second_chan_offset;
1548 start_tdls_cs_params.band = band;
1549
1550 start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME);
1551 start_tdls_cs_params.switch_timeout =
1552 cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT);
1553 start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS;
1554 start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY;
1555
1556 return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG,
1557 ACT_TDLS_CS_INIT, 0,
1558 &start_tdls_cs_params, true);
1559 }
Linux with added FPC-III support