| 1 | /* Marvell Wireless LAN device driver: TDLS handling |
| 2 | * |
| 3 | * Copyright (C) 2014, Marvell International Ltd. |
| 4 | * |
| 5 | * This software file (the "File") is distributed by Marvell International |
| 6 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 |
| 7 | * (the "License"). You may use, redistribute and/or modify this File in |
| 8 | * accordance with the terms and conditions of the License, a copy of which |
| 9 | * is available on the worldwide web at |
| 10 | * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
| 11 | * |
| 12 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
| 13 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
| 14 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
| 15 | * this warranty disclaimer. |
| 16 | */ |
| 17 | |
| 18 | #include "main.h" |
| 19 | #include "wmm.h" |
| 20 | #include "11n.h" |
| 21 | #include "11n_rxreorder.h" |
| 22 | #include "11ac.h" |
| 23 | |
| 24 | #define TDLS_REQ_FIX_LEN 6 |
| 25 | #define TDLS_RESP_FIX_LEN 8 |
| 26 | #define TDLS_CONFIRM_FIX_LEN 6 |
| 27 | #define MWIFIEX_TDLS_WMM_INFO_SIZE 7 |
| 28 | |
| 29 | static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv, |
| 30 | const u8 *mac, u8 status) |
| 31 | { |
| 32 | struct mwifiex_ra_list_tbl *ra_list; |
| 33 | struct list_head *tid_list; |
| 34 | struct sk_buff *skb, *tmp; |
| 35 | struct mwifiex_txinfo *tx_info; |
| 36 | unsigned long flags; |
| 37 | u32 tid; |
| 38 | u8 tid_down; |
| 39 | |
| 40 | mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac); |
| 41 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); |
| 42 | |
| 43 | skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) { |
| 44 | if (!ether_addr_equal(mac, skb->data)) |
| 45 | continue; |
| 46 | |
| 47 | __skb_unlink(skb, &priv->tdls_txq); |
| 48 | tx_info = MWIFIEX_SKB_TXCB(skb); |
| 49 | tid = skb->priority; |
| 50 | tid_down = mwifiex_wmm_downgrade_tid(priv, tid); |
| 51 | |
| 52 | if (mwifiex_is_tdls_link_setup(status)) { |
| 53 | ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac); |
| 54 | ra_list->tdls_link = true; |
| 55 | tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT; |
| 56 | } else { |
| 57 | tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list; |
| 58 | 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 | mwifiex_dbg(priv->adapter, DATA, "%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 | mwifiex_dbg(priv->adapter, ERROR, |
| 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 | memcpy(pos, &assoc_rsp->a_id, sizeof(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 | mwifiex_dbg(priv->adapter, ERROR, |
| 203 | "TDLS peer station not found in list\n"); |
| 204 | return -1; |
| 205 | } |
| 206 | |
| 207 | if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) { |
| 208 | mwifiex_dbg(priv->adapter, WARN, |
| 209 | "TDLS peer doesn't support ht capabilities\n"); |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2); |
| 214 | *pos++ = WLAN_EID_HT_OPERATION; |
| 215 | *pos++ = sizeof(struct ieee80211_ht_operation); |
| 216 | ht_oper = (void *)pos; |
| 217 | |
| 218 | ht_oper->primary_chan = bss_desc->channel; |
| 219 | |
| 220 | /* follow AP's channel bandwidth */ |
| 221 | if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) && |
| 222 | bss_desc->bcn_ht_cap && |
| 223 | ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param)) |
| 224 | ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param; |
| 225 | |
| 226 | if (vht_enabled) { |
| 227 | ht_oper->ht_param = |
| 228 | mwifiex_get_sec_chan_offset(bss_desc->channel); |
| 229 | ht_oper->ht_param |= BIT(2); |
| 230 | } |
| 231 | |
| 232 | memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper, |
| 233 | sizeof(struct ieee80211_ht_operation)); |
| 234 | |
| 235 | return 0; |
| 236 | } |
| 237 | |
| 238 | static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv, |
| 239 | const u8 *mac, struct sk_buff *skb) |
| 240 | { |
| 241 | struct mwifiex_bssdescriptor *bss_desc; |
| 242 | struct ieee80211_vht_operation *vht_oper; |
| 243 | struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL; |
| 244 | struct mwifiex_sta_node *sta_ptr; |
| 245 | struct mwifiex_adapter *adapter = priv->adapter; |
| 246 | u8 supp_chwd_set, peer_supp_chwd_set; |
| 247 | u8 *pos, ap_supp_chwd_set, chan_bw; |
| 248 | u16 mcs_map_user, mcs_map_resp, mcs_map_result; |
| 249 | u16 mcs_user, mcs_resp, nss; |
| 250 | u32 usr_vht_cap_info; |
| 251 | |
| 252 | bss_desc = &priv->curr_bss_params.bss_descriptor; |
| 253 | |
| 254 | sta_ptr = mwifiex_get_sta_entry(priv, mac); |
| 255 | if (unlikely(!sta_ptr)) { |
| 256 | mwifiex_dbg(adapter, ERROR, |
| 257 | "TDLS peer station not found in list\n"); |
| 258 | return -1; |
| 259 | } |
| 260 | |
| 261 | if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) { |
| 262 | mwifiex_dbg(adapter, WARN, |
| 263 | "TDLS peer doesn't support vht capabilities\n"); |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | if (!mwifiex_is_bss_in_11ac_mode(priv)) { |
| 268 | if (sta_ptr->tdls_cap.extcap.ext_capab[7] & |
| 269 | WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) { |
| 270 | mwifiex_dbg(adapter, WARN, |
| 271 | "TDLS peer doesn't support wider bandwidth\n"); |
| 272 | return 0; |
| 273 | } |
| 274 | } else { |
| 275 | ap_vht_cap = bss_desc->bcn_vht_cap; |
| 276 | } |
| 277 | |
| 278 | pos = (void *)skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2); |
| 279 | *pos++ = WLAN_EID_VHT_OPERATION; |
| 280 | *pos++ = sizeof(struct ieee80211_vht_operation); |
| 281 | vht_oper = (struct ieee80211_vht_operation *)pos; |
| 282 | |
| 283 | if (bss_desc->bss_band & BAND_A) |
| 284 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a; |
| 285 | else |
| 286 | usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg; |
| 287 | |
| 288 | /* find the minmum bandwith between AP/TDLS peers */ |
| 289 | vht_cap = &sta_ptr->tdls_cap.vhtcap; |
| 290 | supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info); |
| 291 | peer_supp_chwd_set = |
| 292 | GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info)); |
| 293 | supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set); |
| 294 | |
| 295 | /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */ |
| 296 | |
| 297 | if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] & |
| 298 | WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) { |
| 299 | ap_supp_chwd_set = |
| 300 | GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info)); |
| 301 | supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set); |
| 302 | } |
| 303 | |
| 304 | switch (supp_chwd_set) { |
| 305 | case IEEE80211_VHT_CHANWIDTH_80MHZ: |
| 306 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; |
| 307 | break; |
| 308 | case IEEE80211_VHT_CHANWIDTH_160MHZ: |
| 309 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ; |
| 310 | break; |
| 311 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: |
| 312 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ; |
| 313 | break; |
| 314 | default: |
| 315 | vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; |
| 316 | break; |
| 317 | } |
| 318 | |
| 319 | mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support); |
| 320 | mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map); |
| 321 | mcs_map_result = 0; |
| 322 | |
| 323 | for (nss = 1; nss <= 8; nss++) { |
| 324 | mcs_user = GET_VHTNSSMCS(mcs_map_user, nss); |
| 325 | mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss); |
| 326 | |
| 327 | if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) || |
| 328 | (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED)) |
| 329 | SET_VHTNSSMCS(mcs_map_result, nss, |
| 330 | IEEE80211_VHT_MCS_NOT_SUPPORTED); |
| 331 | else |
| 332 | SET_VHTNSSMCS(mcs_map_result, nss, |
| 333 | min_t(u16, mcs_user, mcs_resp)); |
| 334 | } |
| 335 | |
| 336 | vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result); |
| 337 | |
| 338 | switch (vht_oper->chan_width) { |
| 339 | case IEEE80211_VHT_CHANWIDTH_80MHZ: |
| 340 | chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ; |
| 341 | break; |
| 342 | case IEEE80211_VHT_CHANWIDTH_160MHZ: |
| 343 | chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ; |
| 344 | break; |
| 345 | case IEEE80211_VHT_CHANWIDTH_80P80MHZ: |
| 346 | chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ; |
| 347 | break; |
| 348 | default: |
| 349 | chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT; |
| 350 | break; |
| 351 | } |
| 352 | vht_oper->center_freq_seg1_idx = |
| 353 | mwifiex_get_center_freq_index(priv, BAND_AAC, |
| 354 | bss_desc->channel, |
| 355 | chan_bw); |
| 356 | |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv, |
| 361 | struct sk_buff *skb) |
| 362 | { |
| 363 | struct ieee_types_extcap *extcap; |
| 364 | |
| 365 | extcap = (void *)skb_put(skb, sizeof(struct ieee_types_extcap)); |
| 366 | extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY; |
| 367 | extcap->ieee_hdr.len = 8; |
| 368 | memset(extcap->ext_capab, 0, 8); |
| 369 | extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED; |
| 370 | extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH; |
| 371 | |
| 372 | if (priv->adapter->is_hw_11ac_capable) |
| 373 | extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED; |
| 374 | } |
| 375 | |
| 376 | static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb) |
| 377 | { |
| 378 | u8 *pos = (void *)skb_put(skb, 3); |
| 379 | |
| 380 | *pos++ = WLAN_EID_QOS_CAPA; |
| 381 | *pos++ = 1; |
| 382 | *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB; |
| 383 | } |
| 384 | |
| 385 | static void |
| 386 | mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb) |
| 387 | { |
| 388 | struct ieee80211_wmm_param_ie *wmm; |
| 389 | u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00}; |
| 390 | u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00}; |
| 391 | u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00}; |
| 392 | u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00}; |
| 393 | |
| 394 | wmm = (void *)skb_put(skb, sizeof(*wmm)); |
| 395 | memset(wmm, 0, sizeof(*wmm)); |
| 396 | |
| 397 | wmm->element_id = WLAN_EID_VENDOR_SPECIFIC; |
| 398 | wmm->len = sizeof(*wmm) - 2; |
| 399 | wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */ |
| 400 | wmm->oui[1] = 0x50; |
| 401 | wmm->oui[2] = 0xf2; |
| 402 | wmm->oui_type = 2; /* WME */ |
| 403 | wmm->oui_subtype = 1; /* WME param */ |
| 404 | wmm->version = 1; /* WME ver */ |
| 405 | wmm->qos_info = 0; /* U-APSD not in use */ |
| 406 | |
| 407 | /* use default WMM AC parameters for TDLS link*/ |
| 408 | memcpy(&wmm->ac[0], ac_be, sizeof(ac_be)); |
| 409 | memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk)); |
| 410 | memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi)); |
| 411 | memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo)); |
| 412 | } |
| 413 | |
| 414 | static void |
| 415 | mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb, |
| 416 | u8 qosinfo) |
| 417 | { |
| 418 | u8 *buf; |
| 419 | |
| 420 | buf = (void *)skb_put(skb, MWIFIEX_TDLS_WMM_INFO_SIZE + |
| 421 | sizeof(struct ieee_types_header)); |
| 422 | |
| 423 | *buf++ = WLAN_EID_VENDOR_SPECIFIC; |
| 424 | *buf++ = 7; /* len */ |
| 425 | *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ |
| 426 | *buf++ = 0x50; |
| 427 | *buf++ = 0xf2; |
| 428 | *buf++ = 2; /* WME */ |
| 429 | *buf++ = 0; /* WME info */ |
| 430 | *buf++ = 1; /* WME ver */ |
| 431 | *buf++ = qosinfo; /* U-APSD no in use */ |
| 432 | } |
| 433 | |
| 434 | static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv, |
| 435 | const u8 *peer, u8 action_code, |
| 436 | u8 dialog_token, |
| 437 | u16 status_code, struct sk_buff *skb) |
| 438 | { |
| 439 | struct ieee80211_tdls_data *tf; |
| 440 | int ret; |
| 441 | u16 capab; |
| 442 | struct ieee80211_ht_cap *ht_cap; |
| 443 | u8 radio, *pos; |
| 444 | |
| 445 | capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap; |
| 446 | |
| 447 | tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); |
| 448 | memcpy(tf->da, peer, ETH_ALEN); |
| 449 | memcpy(tf->sa, priv->curr_addr, ETH_ALEN); |
| 450 | tf->ether_type = cpu_to_be16(ETH_P_TDLS); |
| 451 | tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; |
| 452 | |
| 453 | switch (action_code) { |
| 454 | case WLAN_TDLS_SETUP_REQUEST: |
| 455 | tf->category = WLAN_CATEGORY_TDLS; |
| 456 | tf->action_code = WLAN_TDLS_SETUP_REQUEST; |
| 457 | skb_put(skb, sizeof(tf->u.setup_req)); |
| 458 | tf->u.setup_req.dialog_token = dialog_token; |
| 459 | tf->u.setup_req.capability = cpu_to_le16(capab); |
| 460 | ret = mwifiex_tdls_append_rates_ie(priv, skb); |
| 461 | if (ret) { |
| 462 | dev_kfree_skb_any(skb); |
| 463 | return ret; |
| 464 | } |
| 465 | |
| 466 | pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); |
| 467 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 468 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 469 | ht_cap = (void *)pos; |
| 470 | radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band); |
| 471 | ret = mwifiex_fill_cap_info(priv, radio, ht_cap); |
| 472 | if (ret) { |
| 473 | dev_kfree_skb_any(skb); |
| 474 | return ret; |
| 475 | } |
| 476 | |
| 477 | if (priv->adapter->is_hw_11ac_capable) { |
| 478 | ret = mwifiex_tdls_add_vht_capab(priv, skb); |
| 479 | if (ret) { |
| 480 | dev_kfree_skb_any(skb); |
| 481 | return ret; |
| 482 | } |
| 483 | mwifiex_tdls_add_aid(priv, skb); |
| 484 | } |
| 485 | |
| 486 | mwifiex_tdls_add_ext_capab(priv, skb); |
| 487 | mwifiex_tdls_add_qos_capab(skb); |
| 488 | mwifiex_add_wmm_info_ie(priv, skb, 0); |
| 489 | break; |
| 490 | |
| 491 | case WLAN_TDLS_SETUP_RESPONSE: |
| 492 | tf->category = WLAN_CATEGORY_TDLS; |
| 493 | tf->action_code = WLAN_TDLS_SETUP_RESPONSE; |
| 494 | skb_put(skb, sizeof(tf->u.setup_resp)); |
| 495 | tf->u.setup_resp.status_code = cpu_to_le16(status_code); |
| 496 | tf->u.setup_resp.dialog_token = dialog_token; |
| 497 | tf->u.setup_resp.capability = cpu_to_le16(capab); |
| 498 | ret = mwifiex_tdls_append_rates_ie(priv, skb); |
| 499 | if (ret) { |
| 500 | dev_kfree_skb_any(skb); |
| 501 | return ret; |
| 502 | } |
| 503 | |
| 504 | pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); |
| 505 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 506 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 507 | ht_cap = (void *)pos; |
| 508 | radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band); |
| 509 | ret = mwifiex_fill_cap_info(priv, radio, ht_cap); |
| 510 | if (ret) { |
| 511 | dev_kfree_skb_any(skb); |
| 512 | return ret; |
| 513 | } |
| 514 | |
| 515 | if (priv->adapter->is_hw_11ac_capable) { |
| 516 | ret = mwifiex_tdls_add_vht_capab(priv, skb); |
| 517 | if (ret) { |
| 518 | dev_kfree_skb_any(skb); |
| 519 | return ret; |
| 520 | } |
| 521 | mwifiex_tdls_add_aid(priv, skb); |
| 522 | } |
| 523 | |
| 524 | mwifiex_tdls_add_ext_capab(priv, skb); |
| 525 | mwifiex_tdls_add_qos_capab(skb); |
| 526 | mwifiex_add_wmm_info_ie(priv, skb, 0); |
| 527 | break; |
| 528 | |
| 529 | case WLAN_TDLS_SETUP_CONFIRM: |
| 530 | tf->category = WLAN_CATEGORY_TDLS; |
| 531 | tf->action_code = WLAN_TDLS_SETUP_CONFIRM; |
| 532 | skb_put(skb, sizeof(tf->u.setup_cfm)); |
| 533 | tf->u.setup_cfm.status_code = cpu_to_le16(status_code); |
| 534 | tf->u.setup_cfm.dialog_token = dialog_token; |
| 535 | |
| 536 | mwifiex_tdls_add_wmm_param_ie(priv, skb); |
| 537 | if (priv->adapter->is_hw_11ac_capable) { |
| 538 | ret = mwifiex_tdls_add_vht_oper(priv, peer, skb); |
| 539 | if (ret) { |
| 540 | dev_kfree_skb_any(skb); |
| 541 | return ret; |
| 542 | } |
| 543 | ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb); |
| 544 | if (ret) { |
| 545 | dev_kfree_skb_any(skb); |
| 546 | return ret; |
| 547 | } |
| 548 | } else { |
| 549 | ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb); |
| 550 | if (ret) { |
| 551 | dev_kfree_skb_any(skb); |
| 552 | return ret; |
| 553 | } |
| 554 | } |
| 555 | break; |
| 556 | |
| 557 | case WLAN_TDLS_TEARDOWN: |
| 558 | tf->category = WLAN_CATEGORY_TDLS; |
| 559 | tf->action_code = WLAN_TDLS_TEARDOWN; |
| 560 | skb_put(skb, sizeof(tf->u.teardown)); |
| 561 | tf->u.teardown.reason_code = cpu_to_le16(status_code); |
| 562 | break; |
| 563 | |
| 564 | case WLAN_TDLS_DISCOVERY_REQUEST: |
| 565 | tf->category = WLAN_CATEGORY_TDLS; |
| 566 | tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; |
| 567 | skb_put(skb, sizeof(tf->u.discover_req)); |
| 568 | tf->u.discover_req.dialog_token = dialog_token; |
| 569 | break; |
| 570 | default: |
| 571 | mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n"); |
| 572 | return -EINVAL; |
| 573 | } |
| 574 | |
| 575 | return 0; |
| 576 | } |
| 577 | |
| 578 | static void |
| 579 | mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr, |
| 580 | const u8 *peer, const u8 *bssid) |
| 581 | { |
| 582 | struct ieee80211_tdls_lnkie *lnkid; |
| 583 | |
| 584 | lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); |
| 585 | lnkid->ie_type = WLAN_EID_LINK_ID; |
| 586 | lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - |
| 587 | sizeof(struct ieee_types_header); |
| 588 | |
| 589 | memcpy(lnkid->bssid, bssid, ETH_ALEN); |
| 590 | memcpy(lnkid->init_sta, src_addr, ETH_ALEN); |
| 591 | memcpy(lnkid->resp_sta, peer, ETH_ALEN); |
| 592 | } |
| 593 | |
| 594 | int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer, |
| 595 | u8 action_code, u8 dialog_token, |
| 596 | u16 status_code, const u8 *extra_ies, |
| 597 | size_t extra_ies_len) |
| 598 | { |
| 599 | struct sk_buff *skb; |
| 600 | struct mwifiex_txinfo *tx_info; |
| 601 | int ret; |
| 602 | u16 skb_len; |
| 603 | |
| 604 | skb_len = MWIFIEX_MIN_DATA_HEADER_LEN + |
| 605 | max(sizeof(struct ieee80211_mgmt), |
| 606 | sizeof(struct ieee80211_tdls_data)) + |
| 607 | MWIFIEX_MGMT_FRAME_HEADER_SIZE + |
| 608 | MWIFIEX_SUPPORTED_RATES + |
| 609 | 3 + /* Qos Info */ |
| 610 | sizeof(struct ieee_types_extcap) + |
| 611 | sizeof(struct ieee80211_ht_cap) + |
| 612 | sizeof(struct ieee_types_bss_co_2040) + |
| 613 | sizeof(struct ieee80211_ht_operation) + |
| 614 | sizeof(struct ieee80211_tdls_lnkie) + |
| 615 | sizeof(struct ieee80211_wmm_param_ie) + |
| 616 | extra_ies_len; |
| 617 | |
| 618 | if (priv->adapter->is_hw_11ac_capable) |
| 619 | skb_len += sizeof(struct ieee_types_vht_cap) + |
| 620 | sizeof(struct ieee_types_vht_oper) + |
| 621 | sizeof(struct ieee_types_aid); |
| 622 | |
| 623 | skb = dev_alloc_skb(skb_len); |
| 624 | if (!skb) { |
| 625 | mwifiex_dbg(priv->adapter, ERROR, |
| 626 | "allocate skb failed for management frame\n"); |
| 627 | return -ENOMEM; |
| 628 | } |
| 629 | skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN); |
| 630 | |
| 631 | switch (action_code) { |
| 632 | case WLAN_TDLS_SETUP_REQUEST: |
| 633 | case WLAN_TDLS_SETUP_CONFIRM: |
| 634 | case WLAN_TDLS_TEARDOWN: |
| 635 | case WLAN_TDLS_DISCOVERY_REQUEST: |
| 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, priv->curr_addr, peer, |
| 647 | priv->cfg_bssid); |
| 648 | break; |
| 649 | case WLAN_TDLS_SETUP_RESPONSE: |
| 650 | ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code, |
| 651 | dialog_token, status_code, |
| 652 | skb); |
| 653 | if (ret) { |
| 654 | dev_kfree_skb_any(skb); |
| 655 | return ret; |
| 656 | } |
| 657 | if (extra_ies_len) |
| 658 | memcpy(skb_put(skb, extra_ies_len), extra_ies, |
| 659 | extra_ies_len); |
| 660 | mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr, |
| 661 | priv->cfg_bssid); |
| 662 | break; |
| 663 | } |
| 664 | |
| 665 | switch (action_code) { |
| 666 | case WLAN_TDLS_SETUP_REQUEST: |
| 667 | case WLAN_TDLS_SETUP_RESPONSE: |
| 668 | skb->priority = MWIFIEX_PRIO_BK; |
| 669 | break; |
| 670 | default: |
| 671 | skb->priority = MWIFIEX_PRIO_VI; |
| 672 | break; |
| 673 | } |
| 674 | |
| 675 | tx_info = MWIFIEX_SKB_TXCB(skb); |
| 676 | memset(tx_info, 0, sizeof(*tx_info)); |
| 677 | tx_info->bss_num = priv->bss_num; |
| 678 | tx_info->bss_type = priv->bss_type; |
| 679 | |
| 680 | __net_timestamp(skb); |
| 681 | mwifiex_queue_tx_pkt(priv, skb); |
| 682 | |
| 683 | return 0; |
| 684 | } |
| 685 | |
| 686 | static int |
| 687 | mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv, |
| 688 | const u8 *peer, |
| 689 | u8 action_code, u8 dialog_token, |
| 690 | u16 status_code, struct sk_buff *skb) |
| 691 | { |
| 692 | struct ieee80211_mgmt *mgmt; |
| 693 | u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
| 694 | int ret; |
| 695 | u16 capab; |
| 696 | struct ieee80211_ht_cap *ht_cap; |
| 697 | u8 radio, *pos; |
| 698 | |
| 699 | capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap; |
| 700 | |
| 701 | mgmt = (void *)skb_put(skb, offsetof(struct ieee80211_mgmt, u)); |
| 702 | |
| 703 | memset(mgmt, 0, 24); |
| 704 | memcpy(mgmt->da, peer, ETH_ALEN); |
| 705 | memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN); |
| 706 | memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN); |
| 707 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
| 708 | IEEE80211_STYPE_ACTION); |
| 709 | |
| 710 | /* add address 4 */ |
| 711 | pos = skb_put(skb, ETH_ALEN); |
| 712 | |
| 713 | switch (action_code) { |
| 714 | case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: |
| 715 | skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1); |
| 716 | mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; |
| 717 | mgmt->u.action.u.tdls_discover_resp.action_code = |
| 718 | WLAN_PUB_ACTION_TDLS_DISCOVER_RES; |
| 719 | mgmt->u.action.u.tdls_discover_resp.dialog_token = |
| 720 | dialog_token; |
| 721 | mgmt->u.action.u.tdls_discover_resp.capability = |
| 722 | cpu_to_le16(capab); |
| 723 | /* move back for addr4 */ |
| 724 | memmove(pos + ETH_ALEN, &mgmt->u.action.category, |
| 725 | sizeof(mgmt->u.action.u.tdls_discover_resp)); |
| 726 | /* init address 4 */ |
| 727 | memcpy(pos, bc_addr, ETH_ALEN); |
| 728 | |
| 729 | ret = mwifiex_tdls_append_rates_ie(priv, skb); |
| 730 | if (ret) { |
| 731 | dev_kfree_skb_any(skb); |
| 732 | return ret; |
| 733 | } |
| 734 | |
| 735 | pos = (void *)skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); |
| 736 | *pos++ = WLAN_EID_HT_CAPABILITY; |
| 737 | *pos++ = sizeof(struct ieee80211_ht_cap); |
| 738 | ht_cap = (void *)pos; |
| 739 | radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band); |
| 740 | ret = mwifiex_fill_cap_info(priv, radio, ht_cap); |
| 741 | if (ret) { |
| 742 | dev_kfree_skb_any(skb); |
| 743 | return ret; |
| 744 | } |
| 745 | |
| 746 | if (priv->adapter->is_hw_11ac_capable) { |
| 747 | ret = mwifiex_tdls_add_vht_capab(priv, skb); |
| 748 | if (ret) { |
| 749 | dev_kfree_skb_any(skb); |
| 750 | return ret; |
| 751 | } |
| 752 | mwifiex_tdls_add_aid(priv, skb); |
| 753 | } |
| 754 | |
| 755 | mwifiex_tdls_add_ext_capab(priv, skb); |
| 756 | mwifiex_tdls_add_qos_capab(skb); |
| 757 | break; |
| 758 | default: |
| 759 | mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n"); |
| 760 | return -EINVAL; |
| 761 | } |
| 762 | |
| 763 | return 0; |
| 764 | } |
| 765 | |
| 766 | int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer, |
| 767 | u8 action_code, u8 dialog_token, |
| 768 | u16 status_code, const u8 *extra_ies, |
| 769 | size_t extra_ies_len) |
| 770 | { |
| 771 | struct sk_buff *skb; |
| 772 | struct mwifiex_txinfo *tx_info; |
| 773 | u8 *pos; |
| 774 | u32 pkt_type, tx_control; |
| 775 | u16 pkt_len, skb_len; |
| 776 | |
| 777 | skb_len = MWIFIEX_MIN_DATA_HEADER_LEN + |
| 778 | max(sizeof(struct ieee80211_mgmt), |
| 779 | sizeof(struct ieee80211_tdls_data)) + |
| 780 | MWIFIEX_MGMT_FRAME_HEADER_SIZE + |
| 781 | MWIFIEX_SUPPORTED_RATES + |
| 782 | sizeof(struct ieee_types_extcap) + |
| 783 | sizeof(struct ieee80211_ht_cap) + |
| 784 | sizeof(struct ieee_types_bss_co_2040) + |
| 785 | sizeof(struct ieee80211_ht_operation) + |
| 786 | sizeof(struct ieee80211_tdls_lnkie) + |
| 787 | extra_ies_len + |
| 788 | 3 + /* Qos Info */ |
| 789 | ETH_ALEN; /* Address4 */ |
| 790 | |
| 791 | if (priv->adapter->is_hw_11ac_capable) |
| 792 | skb_len += sizeof(struct ieee_types_vht_cap) + |
| 793 | sizeof(struct ieee_types_vht_oper) + |
| 794 | sizeof(struct ieee_types_aid); |
| 795 | |
| 796 | skb = dev_alloc_skb(skb_len); |
| 797 | if (!skb) { |
| 798 | mwifiex_dbg(priv->adapter, ERROR, |
| 799 | "allocate skb failed for management frame\n"); |
| 800 | return -ENOMEM; |
| 801 | } |
| 802 | |
| 803 | skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN); |
| 804 | |
| 805 | pkt_type = PKT_TYPE_MGMT; |
| 806 | tx_control = 0; |
| 807 | pos = skb_put(skb, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len)); |
| 808 | memset(pos, 0, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len)); |
| 809 | memcpy(pos, &pkt_type, sizeof(pkt_type)); |
| 810 | memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control)); |
| 811 | |
| 812 | if (mwifiex_construct_tdls_action_frame(priv, peer, action_code, |
| 813 | dialog_token, status_code, |
| 814 | skb)) { |
| 815 | dev_kfree_skb_any(skb); |
| 816 | return -EINVAL; |
| 817 | } |
| 818 | |
| 819 | if (extra_ies_len) |
| 820 | memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); |
| 821 | |
| 822 | /* the TDLS link IE is always added last we are the responder */ |
| 823 | |
| 824 | mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr, |
| 825 | priv->cfg_bssid); |
| 826 | |
| 827 | skb->priority = MWIFIEX_PRIO_VI; |
| 828 | |
| 829 | tx_info = MWIFIEX_SKB_TXCB(skb); |
| 830 | memset(tx_info, 0, sizeof(*tx_info)); |
| 831 | tx_info->bss_num = priv->bss_num; |
| 832 | tx_info->bss_type = priv->bss_type; |
| 833 | tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT; |
| 834 | |
| 835 | pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len); |
| 836 | memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len, |
| 837 | sizeof(pkt_len)); |
| 838 | __net_timestamp(skb); |
| 839 | mwifiex_queue_tx_pkt(priv, skb); |
| 840 | |
| 841 | return 0; |
| 842 | } |
| 843 | |
| 844 | /* This function process tdls action frame from peer. |
| 845 | * Peer capabilities are stored into station node structure. |
| 846 | */ |
| 847 | void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv, |
| 848 | u8 *buf, int len) |
| 849 | { |
| 850 | struct mwifiex_sta_node *sta_ptr; |
| 851 | u8 *peer, *pos, *end; |
| 852 | u8 i, action, basic; |
| 853 | __le16 cap = 0; |
| 854 | int ie_len = 0; |
| 855 | |
| 856 | if (len < (sizeof(struct ethhdr) + 3)) |
| 857 | return; |
| 858 | if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE) |
| 859 | return; |
| 860 | if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS) |
| 861 | return; |
| 862 | |
| 863 | peer = buf + ETH_ALEN; |
| 864 | action = *(buf + sizeof(struct ethhdr) + 2); |
| 865 | mwifiex_dbg(priv->adapter, DATA, |
| 866 | "rx:tdls action: peer=%pM, action=%d\n", peer, action); |
| 867 | |
| 868 | switch (action) { |
| 869 | case WLAN_TDLS_SETUP_REQUEST: |
| 870 | if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN)) |
| 871 | return; |
| 872 | |
| 873 | pos = buf + sizeof(struct ethhdr) + 4; |
| 874 | /* payload 1+ category 1 + action 1 + dialog 1 */ |
| 875 | cap = cpu_to_le16(*(u16 *)pos); |
| 876 | ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN; |
| 877 | pos += 2; |
| 878 | break; |
| 879 | |
| 880 | case WLAN_TDLS_SETUP_RESPONSE: |
| 881 | if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN)) |
| 882 | return; |
| 883 | /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/ |
| 884 | pos = buf + sizeof(struct ethhdr) + 6; |
| 885 | cap = cpu_to_le16(*(u16 *)pos); |
| 886 | ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN; |
| 887 | pos += 2; |
| 888 | break; |
| 889 | |
| 890 | case WLAN_TDLS_SETUP_CONFIRM: |
| 891 | if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN)) |
| 892 | return; |
| 893 | pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN; |
| 894 | ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN; |
| 895 | break; |
| 896 | default: |
| 897 | mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n"); |
| 898 | return; |
| 899 | } |
| 900 | |
| 901 | sta_ptr = mwifiex_add_sta_entry(priv, peer); |
| 902 | if (!sta_ptr) |
| 903 | return; |
| 904 | |
| 905 | sta_ptr->tdls_cap.capab = cap; |
| 906 | |
| 907 | for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) { |
| 908 | if (pos + 2 + pos[1] > end) |
| 909 | break; |
| 910 | |
| 911 | switch (*pos) { |
| 912 | case WLAN_EID_SUPP_RATES: |
| 913 | sta_ptr->tdls_cap.rates_len = pos[1]; |
| 914 | for (i = 0; i < pos[1]; i++) |
| 915 | sta_ptr->tdls_cap.rates[i] = pos[i + 2]; |
| 916 | break; |
| 917 | |
| 918 | case WLAN_EID_EXT_SUPP_RATES: |
| 919 | basic = sta_ptr->tdls_cap.rates_len; |
| 920 | for (i = 0; i < pos[1]; i++) |
| 921 | sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2]; |
| 922 | sta_ptr->tdls_cap.rates_len += pos[1]; |
| 923 | break; |
| 924 | case WLAN_EID_HT_CAPABILITY: |
| 925 | memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos, |
| 926 | sizeof(struct ieee80211_ht_cap)); |
| 927 | sta_ptr->is_11n_enabled = 1; |
| 928 | break; |
| 929 | case WLAN_EID_HT_OPERATION: |
| 930 | memcpy(&sta_ptr->tdls_cap.ht_oper, pos, |
| 931 | sizeof(struct ieee80211_ht_operation)); |
| 932 | break; |
| 933 | case WLAN_EID_BSS_COEX_2040: |
| 934 | sta_ptr->tdls_cap.coex_2040 = pos[2]; |
| 935 | break; |
| 936 | case WLAN_EID_EXT_CAPABILITY: |
| 937 | memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos, |
| 938 | sizeof(struct ieee_types_header) + |
| 939 | min_t(u8, pos[1], 8)); |
| 940 | break; |
| 941 | case WLAN_EID_RSN: |
| 942 | memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos, |
| 943 | sizeof(struct ieee_types_header) + |
| 944 | min_t(u8, pos[1], IEEE_MAX_IE_SIZE - |
| 945 | sizeof(struct ieee_types_header))); |
| 946 | break; |
| 947 | case WLAN_EID_QOS_CAPA: |
| 948 | sta_ptr->tdls_cap.qos_info = pos[2]; |
| 949 | break; |
| 950 | case WLAN_EID_VHT_OPERATION: |
| 951 | if (priv->adapter->is_hw_11ac_capable) |
| 952 | memcpy(&sta_ptr->tdls_cap.vhtoper, pos, |
| 953 | sizeof(struct ieee80211_vht_operation)); |
| 954 | break; |
| 955 | case WLAN_EID_VHT_CAPABILITY: |
| 956 | if (priv->adapter->is_hw_11ac_capable) { |
| 957 | memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos, |
| 958 | sizeof(struct ieee80211_vht_cap)); |
| 959 | sta_ptr->is_11ac_enabled = 1; |
| 960 | } |
| 961 | break; |
| 962 | case WLAN_EID_AID: |
| 963 | if (priv->adapter->is_hw_11ac_capable) |
| 964 | sta_ptr->tdls_cap.aid = |
| 965 | le16_to_cpu(*(__le16 *)(pos + 2)); |
| 966 | default: |
| 967 | break; |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | return; |
| 972 | } |
| 973 | |
| 974 | static int |
| 975 | mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer) |
| 976 | { |
| 977 | struct mwifiex_sta_node *sta_ptr; |
| 978 | struct mwifiex_ds_tdls_oper tdls_oper; |
| 979 | |
| 980 | memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); |
| 981 | sta_ptr = mwifiex_get_sta_entry(priv, peer); |
| 982 | |
| 983 | if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) { |
| 984 | mwifiex_dbg(priv->adapter, ERROR, |
| 985 | "link absent for peer %pM; cannot config\n", peer); |
| 986 | return -EINVAL; |
| 987 | } |
| 988 | |
| 989 | memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN); |
| 990 | tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK; |
| 991 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, |
| 992 | HostCmd_ACT_GEN_SET, 0, &tdls_oper, true); |
| 993 | } |
| 994 | |
| 995 | static int |
| 996 | mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer) |
| 997 | { |
| 998 | struct mwifiex_sta_node *sta_ptr; |
| 999 | struct mwifiex_ds_tdls_oper tdls_oper; |
| 1000 | |
| 1001 | memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); |
| 1002 | sta_ptr = mwifiex_get_sta_entry(priv, peer); |
| 1003 | |
| 1004 | if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) { |
| 1005 | mwifiex_dbg(priv->adapter, WARN, |
| 1006 | "Setup already in progress for peer %pM\n", peer); |
| 1007 | return 0; |
| 1008 | } |
| 1009 | |
| 1010 | sta_ptr = mwifiex_add_sta_entry(priv, peer); |
| 1011 | if (!sta_ptr) |
| 1012 | return -ENOMEM; |
| 1013 | |
| 1014 | sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS; |
| 1015 | mwifiex_hold_tdls_packets(priv, peer); |
| 1016 | memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN); |
| 1017 | tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK; |
| 1018 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, |
| 1019 | HostCmd_ACT_GEN_SET, 0, &tdls_oper, true); |
| 1020 | } |
| 1021 | |
| 1022 | static int |
| 1023 | mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer) |
| 1024 | { |
| 1025 | struct mwifiex_sta_node *sta_ptr; |
| 1026 | struct mwifiex_ds_tdls_oper tdls_oper; |
| 1027 | unsigned long flags; |
| 1028 | |
| 1029 | memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); |
| 1030 | sta_ptr = mwifiex_get_sta_entry(priv, peer); |
| 1031 | |
| 1032 | if (sta_ptr) { |
| 1033 | if (sta_ptr->is_11n_enabled) { |
| 1034 | mwifiex_11n_cleanup_reorder_tbl(priv); |
| 1035 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, |
| 1036 | flags); |
| 1037 | mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); |
| 1038 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, |
| 1039 | flags); |
| 1040 | } |
| 1041 | mwifiex_del_sta_entry(priv, peer); |
| 1042 | } |
| 1043 | |
| 1044 | mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN); |
| 1045 | mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP); |
| 1046 | memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN); |
| 1047 | tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK; |
| 1048 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, |
| 1049 | HostCmd_ACT_GEN_SET, 0, &tdls_oper, true); |
| 1050 | } |
| 1051 | |
| 1052 | static int |
| 1053 | mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer) |
| 1054 | { |
| 1055 | struct mwifiex_sta_node *sta_ptr; |
| 1056 | struct ieee80211_mcs_info mcs; |
| 1057 | unsigned long flags; |
| 1058 | int i; |
| 1059 | |
| 1060 | sta_ptr = mwifiex_get_sta_entry(priv, peer); |
| 1061 | |
| 1062 | if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) { |
| 1063 | mwifiex_dbg(priv->adapter, MSG, |
| 1064 | "tdls: enable link %pM success\n", peer); |
| 1065 | |
| 1066 | sta_ptr->tdls_status = TDLS_SETUP_COMPLETE; |
| 1067 | |
| 1068 | mcs = sta_ptr->tdls_cap.ht_capb.mcs; |
| 1069 | if (mcs.rx_mask[0] != 0xff) |
| 1070 | sta_ptr->is_11n_enabled = true; |
| 1071 | if (sta_ptr->is_11n_enabled) { |
| 1072 | if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) & |
| 1073 | IEEE80211_HT_CAP_MAX_AMSDU) |
| 1074 | sta_ptr->max_amsdu = |
| 1075 | MWIFIEX_TX_DATA_BUF_SIZE_8K; |
| 1076 | else |
| 1077 | sta_ptr->max_amsdu = |
| 1078 | MWIFIEX_TX_DATA_BUF_SIZE_4K; |
| 1079 | |
| 1080 | for (i = 0; i < MAX_NUM_TID; i++) |
| 1081 | sta_ptr->ampdu_sta[i] = |
| 1082 | priv->aggr_prio_tbl[i].ampdu_user; |
| 1083 | } else { |
| 1084 | for (i = 0; i < MAX_NUM_TID; i++) |
| 1085 | sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED; |
| 1086 | } |
| 1087 | if (sta_ptr->tdls_cap.extcap.ext_capab[3] & |
| 1088 | WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) { |
| 1089 | mwifiex_config_tdls_enable(priv); |
| 1090 | mwifiex_config_tdls_cs_params(priv); |
| 1091 | } |
| 1092 | |
| 1093 | memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq)); |
| 1094 | mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE); |
| 1095 | mwifiex_auto_tdls_update_peer_status(priv, peer, |
| 1096 | TDLS_SETUP_COMPLETE); |
| 1097 | } else { |
| 1098 | mwifiex_dbg(priv->adapter, ERROR, |
| 1099 | "tdls: enable link %pM failed\n", peer); |
| 1100 | if (sta_ptr) { |
| 1101 | mwifiex_11n_cleanup_reorder_tbl(priv); |
| 1102 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, |
| 1103 | flags); |
| 1104 | mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); |
| 1105 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, |
| 1106 | flags); |
| 1107 | mwifiex_del_sta_entry(priv, peer); |
| 1108 | } |
| 1109 | mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN); |
| 1110 | mwifiex_auto_tdls_update_peer_status(priv, peer, |
| 1111 | TDLS_NOT_SETUP); |
| 1112 | |
| 1113 | return -1; |
| 1114 | } |
| 1115 | |
| 1116 | return 0; |
| 1117 | } |
| 1118 | |
| 1119 | int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action) |
| 1120 | { |
| 1121 | switch (action) { |
| 1122 | case MWIFIEX_TDLS_ENABLE_LINK: |
| 1123 | return mwifiex_tdls_process_enable_link(priv, peer); |
| 1124 | case MWIFIEX_TDLS_DISABLE_LINK: |
| 1125 | return mwifiex_tdls_process_disable_link(priv, peer); |
| 1126 | case MWIFIEX_TDLS_CREATE_LINK: |
| 1127 | return mwifiex_tdls_process_create_link(priv, peer); |
| 1128 | case MWIFIEX_TDLS_CONFIG_LINK: |
| 1129 | return mwifiex_tdls_process_config_link(priv, peer); |
| 1130 | } |
| 1131 | return 0; |
| 1132 | } |
| 1133 | |
| 1134 | int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac) |
| 1135 | { |
| 1136 | struct mwifiex_sta_node *sta_ptr; |
| 1137 | |
| 1138 | sta_ptr = mwifiex_get_sta_entry(priv, mac); |
| 1139 | if (sta_ptr) |
| 1140 | return sta_ptr->tdls_status; |
| 1141 | |
| 1142 | return TDLS_NOT_SETUP; |
| 1143 | } |
| 1144 | |
| 1145 | int mwifiex_get_tdls_list(struct mwifiex_private *priv, |
| 1146 | struct tdls_peer_info *buf) |
| 1147 | { |
| 1148 | struct mwifiex_sta_node *sta_ptr; |
| 1149 | struct tdls_peer_info *peer = buf; |
| 1150 | int count = 0; |
| 1151 | unsigned long flags; |
| 1152 | |
| 1153 | if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) |
| 1154 | return 0; |
| 1155 | |
| 1156 | /* make sure we are in station mode and connected */ |
| 1157 | if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected)) |
| 1158 | return 0; |
| 1159 | |
| 1160 | spin_lock_irqsave(&priv->sta_list_spinlock, flags); |
| 1161 | list_for_each_entry(sta_ptr, &priv->sta_list, list) { |
| 1162 | if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) { |
| 1163 | ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr); |
| 1164 | peer++; |
| 1165 | count++; |
| 1166 | if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED) |
| 1167 | break; |
| 1168 | } |
| 1169 | } |
| 1170 | spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); |
| 1171 | |
| 1172 | return count; |
| 1173 | } |
| 1174 | |
| 1175 | void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv) |
| 1176 | { |
| 1177 | struct mwifiex_sta_node *sta_ptr; |
| 1178 | struct mwifiex_ds_tdls_oper tdls_oper; |
| 1179 | unsigned long flags; |
| 1180 | |
| 1181 | if (list_empty(&priv->sta_list)) |
| 1182 | return; |
| 1183 | |
| 1184 | list_for_each_entry(sta_ptr, &priv->sta_list, list) { |
| 1185 | memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); |
| 1186 | |
| 1187 | if (sta_ptr->is_11n_enabled) { |
| 1188 | mwifiex_11n_cleanup_reorder_tbl(priv); |
| 1189 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, |
| 1190 | flags); |
| 1191 | mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); |
| 1192 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, |
| 1193 | flags); |
| 1194 | } |
| 1195 | |
| 1196 | mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr, |
| 1197 | TDLS_LINK_TEARDOWN); |
| 1198 | memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN); |
| 1199 | tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK; |
| 1200 | if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, |
| 1201 | HostCmd_ACT_GEN_SET, 0, &tdls_oper, false)) |
| 1202 | mwifiex_dbg(priv->adapter, ERROR, |
| 1203 | "Disable link failed for TDLS peer %pM", |
| 1204 | sta_ptr->mac_addr); |
| 1205 | } |
| 1206 | |
| 1207 | mwifiex_del_all_sta_list(priv); |
| 1208 | } |
| 1209 | |
| 1210 | int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb) |
| 1211 | { |
| 1212 | struct mwifiex_auto_tdls_peer *peer; |
| 1213 | unsigned long flags; |
| 1214 | u8 mac[ETH_ALEN]; |
| 1215 | |
| 1216 | ether_addr_copy(mac, skb->data); |
| 1217 | |
| 1218 | spin_lock_irqsave(&priv->auto_tdls_lock, flags); |
| 1219 | list_for_each_entry(peer, &priv->auto_tdls_list, list) { |
| 1220 | if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) { |
| 1221 | if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH && |
| 1222 | peer->tdls_status == TDLS_NOT_SETUP && |
| 1223 | (peer->failure_count < |
| 1224 | MWIFIEX_TDLS_MAX_FAIL_COUNT)) { |
| 1225 | peer->tdls_status = TDLS_SETUP_INPROGRESS; |
| 1226 | mwifiex_dbg(priv->adapter, INFO, |
| 1227 | "setup TDLS link, peer=%pM rssi=%d\n", |
| 1228 | peer->mac_addr, peer->rssi); |
| 1229 | |
| 1230 | cfg80211_tdls_oper_request(priv->netdev, |
| 1231 | peer->mac_addr, |
| 1232 | NL80211_TDLS_SETUP, |
| 1233 | 0, GFP_ATOMIC); |
| 1234 | peer->do_setup = false; |
| 1235 | priv->check_tdls_tx = false; |
| 1236 | } else if (peer->failure_count < |
| 1237 | MWIFIEX_TDLS_MAX_FAIL_COUNT && |
| 1238 | peer->do_discover) { |
| 1239 | mwifiex_send_tdls_data_frame(priv, |
| 1240 | peer->mac_addr, |
| 1241 | WLAN_TDLS_DISCOVERY_REQUEST, |
| 1242 | 1, 0, NULL, 0); |
| 1243 | peer->do_discover = false; |
| 1244 | } |
| 1245 | } |
| 1246 | } |
| 1247 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1248 | |
| 1249 | return 0; |
| 1250 | } |
| 1251 | |
| 1252 | void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv) |
| 1253 | { |
| 1254 | struct mwifiex_auto_tdls_peer *peer, *tmp_node; |
| 1255 | unsigned long flags; |
| 1256 | |
| 1257 | spin_lock_irqsave(&priv->auto_tdls_lock, flags); |
| 1258 | list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) { |
| 1259 | list_del(&peer->list); |
| 1260 | kfree(peer); |
| 1261 | } |
| 1262 | |
| 1263 | INIT_LIST_HEAD(&priv->auto_tdls_list); |
| 1264 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1265 | priv->check_tdls_tx = false; |
| 1266 | } |
| 1267 | |
| 1268 | void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac) |
| 1269 | { |
| 1270 | struct mwifiex_auto_tdls_peer *tdls_peer; |
| 1271 | unsigned long flags; |
| 1272 | |
| 1273 | if (!priv->adapter->auto_tdls) |
| 1274 | return; |
| 1275 | |
| 1276 | spin_lock_irqsave(&priv->auto_tdls_lock, flags); |
| 1277 | list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) { |
| 1278 | if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) { |
| 1279 | tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS; |
| 1280 | tdls_peer->rssi_jiffies = jiffies; |
| 1281 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1282 | return; |
| 1283 | } |
| 1284 | } |
| 1285 | |
| 1286 | /* create new TDLS peer */ |
| 1287 | tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC); |
| 1288 | if (tdls_peer) { |
| 1289 | ether_addr_copy(tdls_peer->mac_addr, mac); |
| 1290 | tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS; |
| 1291 | tdls_peer->rssi_jiffies = jiffies; |
| 1292 | INIT_LIST_HEAD(&tdls_peer->list); |
| 1293 | list_add_tail(&tdls_peer->list, &priv->auto_tdls_list); |
| 1294 | mwifiex_dbg(priv->adapter, INFO, |
| 1295 | "Add auto TDLS peer= %pM to list\n", mac); |
| 1296 | } |
| 1297 | |
| 1298 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1299 | } |
| 1300 | |
| 1301 | void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv, |
| 1302 | const u8 *mac, u8 link_status) |
| 1303 | { |
| 1304 | struct mwifiex_auto_tdls_peer *peer; |
| 1305 | unsigned long flags; |
| 1306 | |
| 1307 | if (!priv->adapter->auto_tdls) |
| 1308 | return; |
| 1309 | |
| 1310 | spin_lock_irqsave(&priv->auto_tdls_lock, flags); |
| 1311 | list_for_each_entry(peer, &priv->auto_tdls_list, list) { |
| 1312 | if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) { |
| 1313 | if ((link_status == TDLS_NOT_SETUP) && |
| 1314 | (peer->tdls_status == TDLS_SETUP_INPROGRESS)) |
| 1315 | peer->failure_count++; |
| 1316 | else if (mwifiex_is_tdls_link_setup(link_status)) |
| 1317 | peer->failure_count = 0; |
| 1318 | |
| 1319 | peer->tdls_status = link_status; |
| 1320 | break; |
| 1321 | } |
| 1322 | } |
| 1323 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1324 | } |
| 1325 | |
| 1326 | void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv, |
| 1327 | u8 *mac, s8 snr, s8 nflr) |
| 1328 | { |
| 1329 | struct mwifiex_auto_tdls_peer *peer; |
| 1330 | unsigned long flags; |
| 1331 | |
| 1332 | if (!priv->adapter->auto_tdls) |
| 1333 | return; |
| 1334 | |
| 1335 | spin_lock_irqsave(&priv->auto_tdls_lock, flags); |
| 1336 | list_for_each_entry(peer, &priv->auto_tdls_list, list) { |
| 1337 | if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) { |
| 1338 | peer->rssi = nflr - snr; |
| 1339 | peer->rssi_jiffies = jiffies; |
| 1340 | break; |
| 1341 | } |
| 1342 | } |
| 1343 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1344 | } |
| 1345 | |
| 1346 | void mwifiex_check_auto_tdls(unsigned long context) |
| 1347 | { |
| 1348 | struct mwifiex_private *priv = (struct mwifiex_private *)context; |
| 1349 | struct mwifiex_auto_tdls_peer *tdls_peer; |
| 1350 | unsigned long flags; |
| 1351 | u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED; |
| 1352 | |
| 1353 | if (WARN_ON_ONCE(!priv || !priv->adapter)) { |
| 1354 | pr_err("mwifiex: %s: adapter or private structure is NULL\n", |
| 1355 | __func__); |
| 1356 | return; |
| 1357 | } |
| 1358 | |
| 1359 | if (unlikely(!priv->adapter->auto_tdls)) |
| 1360 | return; |
| 1361 | |
| 1362 | if (!priv->auto_tdls_timer_active) { |
| 1363 | mwifiex_dbg(priv->adapter, INFO, |
| 1364 | "auto TDLS timer inactive; return"); |
| 1365 | return; |
| 1366 | } |
| 1367 | |
| 1368 | priv->check_tdls_tx = false; |
| 1369 | |
| 1370 | if (list_empty(&priv->auto_tdls_list)) { |
| 1371 | mod_timer(&priv->auto_tdls_timer, |
| 1372 | jiffies + |
| 1373 | msecs_to_jiffies(MWIFIEX_TIMER_10S)); |
| 1374 | return; |
| 1375 | } |
| 1376 | |
| 1377 | spin_lock_irqsave(&priv->auto_tdls_lock, flags); |
| 1378 | list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) { |
| 1379 | if ((jiffies - tdls_peer->rssi_jiffies) > |
| 1380 | (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) { |
| 1381 | tdls_peer->rssi = 0; |
| 1382 | tdls_peer->do_discover = true; |
| 1383 | priv->check_tdls_tx = true; |
| 1384 | } |
| 1385 | |
| 1386 | if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) || |
| 1387 | !tdls_peer->rssi) && |
| 1388 | mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) { |
| 1389 | tdls_peer->tdls_status = TDLS_LINK_TEARDOWN; |
| 1390 | mwifiex_dbg(priv->adapter, MSG, |
| 1391 | "teardown TDLS link,peer=%pM rssi=%d\n", |
| 1392 | tdls_peer->mac_addr, -tdls_peer->rssi); |
| 1393 | tdls_peer->do_discover = true; |
| 1394 | priv->check_tdls_tx = true; |
| 1395 | cfg80211_tdls_oper_request(priv->netdev, |
| 1396 | tdls_peer->mac_addr, |
| 1397 | NL80211_TDLS_TEARDOWN, |
| 1398 | reason, GFP_ATOMIC); |
| 1399 | } else if (tdls_peer->rssi && |
| 1400 | tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH && |
| 1401 | tdls_peer->tdls_status == TDLS_NOT_SETUP && |
| 1402 | tdls_peer->failure_count < |
| 1403 | MWIFIEX_TDLS_MAX_FAIL_COUNT) { |
| 1404 | priv->check_tdls_tx = true; |
| 1405 | tdls_peer->do_setup = true; |
| 1406 | mwifiex_dbg(priv->adapter, INFO, |
| 1407 | "check TDLS with peer=%pM\t" |
| 1408 | "rssi=%d\n", tdls_peer->mac_addr, |
| 1409 | tdls_peer->rssi); |
| 1410 | } |
| 1411 | } |
| 1412 | spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); |
| 1413 | |
| 1414 | mod_timer(&priv->auto_tdls_timer, |
| 1415 | jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); |
| 1416 | } |
| 1417 | |
| 1418 | void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv) |
| 1419 | { |
| 1420 | setup_timer(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, |
| 1421 | (unsigned long)priv); |
| 1422 | priv->auto_tdls_timer_active = true; |
| 1423 | mod_timer(&priv->auto_tdls_timer, |
| 1424 | jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); |
| 1425 | } |
| 1426 | |
| 1427 | void mwifiex_clean_auto_tdls(struct mwifiex_private *priv) |
| 1428 | { |
| 1429 | if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && |
| 1430 | priv->adapter->auto_tdls && |
| 1431 | priv->bss_type == MWIFIEX_BSS_TYPE_STA) { |
| 1432 | priv->auto_tdls_timer_active = false; |
| 1433 | del_timer(&priv->auto_tdls_timer); |
| 1434 | mwifiex_flush_auto_tdls_list(priv); |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable) |
| 1439 | { |
| 1440 | struct mwifiex_tdls_config config; |
| 1441 | |
| 1442 | config.enable = cpu_to_le16(enable); |
| 1443 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, |
| 1444 | ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true); |
| 1445 | } |
| 1446 | |
| 1447 | int mwifiex_config_tdls_enable(struct mwifiex_private *priv) |
| 1448 | { |
| 1449 | return mwifiex_config_tdls(priv, true); |
| 1450 | } |
| 1451 | |
| 1452 | int mwifiex_config_tdls_disable(struct mwifiex_private *priv) |
| 1453 | { |
| 1454 | return mwifiex_config_tdls(priv, false); |
| 1455 | } |
| 1456 | |
| 1457 | int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv) |
| 1458 | { |
| 1459 | struct mwifiex_tdls_config_cs_params config_tdls_cs_params; |
| 1460 | |
| 1461 | config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME; |
| 1462 | config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK; |
| 1463 | config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK; |
| 1464 | |
| 1465 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, |
| 1466 | ACT_TDLS_CS_PARAMS, 0, |
| 1467 | &config_tdls_cs_params, true); |
| 1468 | } |
| 1469 | |
| 1470 | int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac) |
| 1471 | { |
| 1472 | struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params; |
| 1473 | |
| 1474 | ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac); |
| 1475 | |
| 1476 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, |
| 1477 | ACT_TDLS_CS_STOP, 0, |
| 1478 | &stop_tdls_cs_params, true); |
| 1479 | } |
| 1480 | |
| 1481 | int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac, |
| 1482 | u8 primary_chan, u8 second_chan_offset, u8 band) |
| 1483 | { |
| 1484 | struct mwifiex_tdls_init_cs_params start_tdls_cs_params; |
| 1485 | |
| 1486 | ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac); |
| 1487 | start_tdls_cs_params.primary_chan = primary_chan; |
| 1488 | start_tdls_cs_params.second_chan_offset = second_chan_offset; |
| 1489 | start_tdls_cs_params.band = band; |
| 1490 | |
| 1491 | start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME); |
| 1492 | start_tdls_cs_params.switch_timeout = |
| 1493 | cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT); |
| 1494 | start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS; |
| 1495 | start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY; |
| 1496 | |
| 1497 | return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, |
| 1498 | ACT_TDLS_CS_INIT, 0, |
| 1499 | &start_tdls_cs_params, true); |
| 1500 | } |