| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Avinash Patil | 6886 | 86.92% | 14 | 34.15% |
| Xinming Hu | 485 | 6.12% | 6 | 14.63% |
| Karthik Ananthapadmanabha | 300 | 3.79% | 1 | 2.44% |
| Zhaoyang Liu | 68 | 0.86% | 1 | 2.44% |
| Aniket Nagarnaik | 62 | 0.78% | 1 | 2.44% |
| Bing Zhao | 41 | 0.52% | 2 | 4.88% |
| Amitkumar Karwar | 26 | 0.33% | 1 | 2.44% |
| Johannes Berg | 22 | 0.28% | 5 | 12.20% |
| Kees Cook | 14 | 0.18% | 1 | 2.44% |
| Devidas Puranik | 7 | 0.09% | 1 | 2.44% |
| Julia Lawall | 3 | 0.04% | 1 | 2.44% |
| Thomas Gleixner | 2 | 0.03% | 1 | 2.44% |
| Colin Ian King | 1 | 0.01% | 1 | 2.44% |
| Geert Uytterhoeven | 1 | 0.01% | 1 | 2.44% |
| John W. Linville | 1 | 0.01% | 1 | 2.44% |
| Shawn Lin | 1 | 0.01% | 1 | 2.44% |
| Dan Carpenter | 1 | 0.01% | 1 | 2.44% |
| Masanari Iida | 1 | 0.01% | 1 | 2.44% |
| Total | 7922 | 41 |
/* Marvell Wireless LAN device driver: TDLS handling * * Copyright (C) 2014, Marvell International Ltd. * * This software file (the "File") is distributed by Marvell International * Ltd. under the terms of the GNU General Public License Version 2, June 1991 * (the "License"). You may use, redistribute and/or modify this File in * accordance with the terms and conditions of the License, a copy of which * is available on the worldwide web at * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. * * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE * ARE EXPRESSLY DISCLAIMED. The License provides additional details about * this warranty disclaimer. */ #include "main.h" #include "wmm.h" #include "11n.h" #include "11n_rxreorder.h" #include "11ac.h" #define TDLS_REQ_FIX_LEN 6 #define TDLS_RESP_FIX_LEN 8 #define TDLS_CONFIRM_FIX_LEN 6 #define MWIFIEX_TDLS_WMM_INFO_SIZE 7 static void mwifiex_restore_tdls_packets(struct mwifiex_private *priv, const u8 *mac, u8 status) { struct mwifiex_ra_list_tbl *ra_list; struct list_head *tid_list; struct sk_buff *skb, *tmp; struct mwifiex_txinfo *tx_info; unsigned long flags; u32 tid; u8 tid_down; mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac); spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) { if (!ether_addr_equal(mac, skb->data)) continue; __skb_unlink(skb, &priv->tdls_txq); tx_info = MWIFIEX_SKB_TXCB(skb); tid = skb->priority; tid_down = mwifiex_wmm_downgrade_tid(priv, tid); if (mwifiex_is_tdls_link_setup(status)) { ra_list = mwifiex_wmm_get_queue_raptr(priv, tid, mac); ra_list->tdls_link = true; tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT; } else { tid_list = &priv->wmm.tid_tbl_ptr[tid_down].ra_list; ra_list = list_first_entry_or_null(tid_list, struct mwifiex_ra_list_tbl, list); tx_info->flags &= ~MWIFIEX_BUF_FLAG_TDLS_PKT; } if (!ra_list) { mwifiex_write_data_complete(priv->adapter, skb, 0, -1); continue; } skb_queue_tail(&ra_list->skb_head, skb); ra_list->ba_pkt_count++; ra_list->total_pkt_count++; if (atomic_read(&priv->wmm.highest_queued_prio) < tos_to_tid_inv[tid_down]) atomic_set(&priv->wmm.highest_queued_prio, tos_to_tid_inv[tid_down]); atomic_inc(&priv->wmm.tx_pkts_queued); } spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); return; } static void mwifiex_hold_tdls_packets(struct mwifiex_private *priv, const u8 *mac) { struct mwifiex_ra_list_tbl *ra_list; struct list_head *ra_list_head; struct sk_buff *skb, *tmp; unsigned long flags; int i; mwifiex_dbg(priv->adapter, DATA, "%s: %pM\n", __func__, mac); spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); for (i = 0; i < MAX_NUM_TID; i++) { if (!list_empty(&priv->wmm.tid_tbl_ptr[i].ra_list)) { ra_list_head = &priv->wmm.tid_tbl_ptr[i].ra_list; list_for_each_entry(ra_list, ra_list_head, list) { skb_queue_walk_safe(&ra_list->skb_head, skb, tmp) { if (!ether_addr_equal(mac, skb->data)) continue; __skb_unlink(skb, &ra_list->skb_head); atomic_dec(&priv->wmm.tx_pkts_queued); ra_list->total_pkt_count--; skb_queue_tail(&priv->tdls_txq, skb); } } } } spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); return; } /* This function appends rate TLV to scan config command. */ static int mwifiex_tdls_append_rates_ie(struct mwifiex_private *priv, struct sk_buff *skb) { u8 rates[MWIFIEX_SUPPORTED_RATES], *pos; u16 rates_size, supp_rates_size, ext_rates_size; memset(rates, 0, sizeof(rates)); rates_size = mwifiex_get_supported_rates(priv, rates); supp_rates_size = min_t(u16, rates_size, MWIFIEX_TDLS_SUPPORTED_RATES); if (skb_tailroom(skb) < rates_size + 4) { mwifiex_dbg(priv->adapter, ERROR, "Insufficient space while adding rates\n"); return -ENOMEM; } pos = skb_put(skb, supp_rates_size + 2); *pos++ = WLAN_EID_SUPP_RATES; *pos++ = supp_rates_size; memcpy(pos, rates, supp_rates_size); if (rates_size > MWIFIEX_TDLS_SUPPORTED_RATES) { ext_rates_size = rates_size - MWIFIEX_TDLS_SUPPORTED_RATES; pos = skb_put(skb, ext_rates_size + 2); *pos++ = WLAN_EID_EXT_SUPP_RATES; *pos++ = ext_rates_size; memcpy(pos, rates + MWIFIEX_TDLS_SUPPORTED_RATES, ext_rates_size); } return 0; } static void mwifiex_tdls_add_aid(struct mwifiex_private *priv, struct sk_buff *skb) { struct ieee_types_assoc_rsp *assoc_rsp; u8 *pos; assoc_rsp = (struct ieee_types_assoc_rsp *)&priv->assoc_rsp_buf; pos = skb_put(skb, 4); *pos++ = WLAN_EID_AID; *pos++ = 2; memcpy(pos, &assoc_rsp->a_id, sizeof(assoc_rsp->a_id)); return; } static int mwifiex_tdls_add_vht_capab(struct mwifiex_private *priv, struct sk_buff *skb) { struct ieee80211_vht_cap vht_cap; u8 *pos; pos = skb_put(skb, sizeof(struct ieee80211_vht_cap) + 2); *pos++ = WLAN_EID_VHT_CAPABILITY; *pos++ = sizeof(struct ieee80211_vht_cap); memset(&vht_cap, 0, sizeof(struct ieee80211_vht_cap)); mwifiex_fill_vht_cap_tlv(priv, &vht_cap, priv->curr_bss_params.band); memcpy(pos, &vht_cap, sizeof(vht_cap)); return 0; } static int mwifiex_tdls_add_ht_oper(struct mwifiex_private *priv, const u8 *mac, u8 vht_enabled, struct sk_buff *skb) { struct ieee80211_ht_operation *ht_oper; struct mwifiex_sta_node *sta_ptr; struct mwifiex_bssdescriptor *bss_desc = &priv->curr_bss_params.bss_descriptor; u8 *pos; sta_ptr = mwifiex_get_sta_entry(priv, mac); if (unlikely(!sta_ptr)) { mwifiex_dbg(priv->adapter, ERROR, "TDLS peer station not found in list\n"); return -1; } if (!(le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info))) { mwifiex_dbg(priv->adapter, WARN, "TDLS peer doesn't support ht capabilities\n"); return 0; } pos = skb_put(skb, sizeof(struct ieee80211_ht_operation) + 2); *pos++ = WLAN_EID_HT_OPERATION; *pos++ = sizeof(struct ieee80211_ht_operation); ht_oper = (void *)pos; ht_oper->primary_chan = bss_desc->channel; /* follow AP's channel bandwidth */ if (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) && bss_desc->bcn_ht_cap && ISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param)) ht_oper->ht_param = bss_desc->bcn_ht_oper->ht_param; if (vht_enabled) { ht_oper->ht_param = mwifiex_get_sec_chan_offset(bss_desc->channel); ht_oper->ht_param |= BIT(2); } memcpy(&sta_ptr->tdls_cap.ht_oper, ht_oper, sizeof(struct ieee80211_ht_operation)); return 0; } static int mwifiex_tdls_add_vht_oper(struct mwifiex_private *priv, const u8 *mac, struct sk_buff *skb) { struct mwifiex_bssdescriptor *bss_desc; struct ieee80211_vht_operation *vht_oper; struct ieee80211_vht_cap *vht_cap, *ap_vht_cap = NULL; struct mwifiex_sta_node *sta_ptr; struct mwifiex_adapter *adapter = priv->adapter; u8 supp_chwd_set, peer_supp_chwd_set; u8 *pos, ap_supp_chwd_set, chan_bw; u16 mcs_map_user, mcs_map_resp, mcs_map_result; u16 mcs_user, mcs_resp, nss; u32 usr_vht_cap_info; bss_desc = &priv->curr_bss_params.bss_descriptor; sta_ptr = mwifiex_get_sta_entry(priv, mac); if (unlikely(!sta_ptr)) { mwifiex_dbg(adapter, ERROR, "TDLS peer station not found in list\n"); return -1; } if (!(le32_to_cpu(sta_ptr->tdls_cap.vhtcap.vht_cap_info))) { mwifiex_dbg(adapter, WARN, "TDLS peer doesn't support vht capabilities\n"); return 0; } if (!mwifiex_is_bss_in_11ac_mode(priv)) { if (sta_ptr->tdls_cap.extcap.ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) { mwifiex_dbg(adapter, WARN, "TDLS peer doesn't support wider bandwidth\n"); return 0; } } else { ap_vht_cap = bss_desc->bcn_vht_cap; } pos = skb_put(skb, sizeof(struct ieee80211_vht_operation) + 2); *pos++ = WLAN_EID_VHT_OPERATION; *pos++ = sizeof(struct ieee80211_vht_operation); vht_oper = (struct ieee80211_vht_operation *)pos; if (bss_desc->bss_band & BAND_A) usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_a; else usr_vht_cap_info = adapter->usr_dot_11ac_dev_cap_bg; /* find the minimum bandwidth between AP/TDLS peers */ vht_cap = &sta_ptr->tdls_cap.vhtcap; supp_chwd_set = GET_VHTCAP_CHWDSET(usr_vht_cap_info); peer_supp_chwd_set = GET_VHTCAP_CHWDSET(le32_to_cpu(vht_cap->vht_cap_info)); supp_chwd_set = min_t(u8, supp_chwd_set, peer_supp_chwd_set); /* We need check AP's bandwidth when TDLS_WIDER_BANDWIDTH is off */ if (ap_vht_cap && sta_ptr->tdls_cap.extcap.ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED) { ap_supp_chwd_set = GET_VHTCAP_CHWDSET(le32_to_cpu(ap_vht_cap->vht_cap_info)); supp_chwd_set = min_t(u8, supp_chwd_set, ap_supp_chwd_set); } switch (supp_chwd_set) { case IEEE80211_VHT_CHANWIDTH_80MHZ: vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80MHZ; break; case IEEE80211_VHT_CHANWIDTH_160MHZ: vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_160MHZ; break; case IEEE80211_VHT_CHANWIDTH_80P80MHZ: vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_80P80MHZ; break; default: vht_oper->chan_width = IEEE80211_VHT_CHANWIDTH_USE_HT; break; } mcs_map_user = GET_DEVRXMCSMAP(adapter->usr_dot_11ac_mcs_support); mcs_map_resp = le16_to_cpu(vht_cap->supp_mcs.rx_mcs_map); mcs_map_result = 0; for (nss = 1; nss <= 8; nss++) { mcs_user = GET_VHTNSSMCS(mcs_map_user, nss); mcs_resp = GET_VHTNSSMCS(mcs_map_resp, nss); if ((mcs_user == IEEE80211_VHT_MCS_NOT_SUPPORTED) || (mcs_resp == IEEE80211_VHT_MCS_NOT_SUPPORTED)) SET_VHTNSSMCS(mcs_map_result, nss, IEEE80211_VHT_MCS_NOT_SUPPORTED); else SET_VHTNSSMCS(mcs_map_result, nss, min_t(u16, mcs_user, mcs_resp)); } vht_oper->basic_mcs_set = cpu_to_le16(mcs_map_result); switch (vht_oper->chan_width) { case IEEE80211_VHT_CHANWIDTH_80MHZ: chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ; break; case IEEE80211_VHT_CHANWIDTH_160MHZ: chan_bw = IEEE80211_VHT_CHANWIDTH_160MHZ; break; case IEEE80211_VHT_CHANWIDTH_80P80MHZ: chan_bw = IEEE80211_VHT_CHANWIDTH_80MHZ; break; default: chan_bw = IEEE80211_VHT_CHANWIDTH_USE_HT; break; } vht_oper->center_freq_seg0_idx = mwifiex_get_center_freq_index(priv, BAND_AAC, bss_desc->channel, chan_bw); return 0; } static void mwifiex_tdls_add_ext_capab(struct mwifiex_private *priv, struct sk_buff *skb) { struct ieee_types_extcap *extcap; extcap = skb_put(skb, sizeof(struct ieee_types_extcap)); extcap->ieee_hdr.element_id = WLAN_EID_EXT_CAPABILITY; extcap->ieee_hdr.len = 8; memset(extcap->ext_capab, 0, 8); extcap->ext_capab[4] |= WLAN_EXT_CAPA5_TDLS_ENABLED; extcap->ext_capab[3] |= WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH; if (priv->adapter->is_hw_11ac_capable) extcap->ext_capab[7] |= WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED; } static void mwifiex_tdls_add_qos_capab(struct sk_buff *skb) { u8 *pos = skb_put(skb, 3); *pos++ = WLAN_EID_QOS_CAPA; *pos++ = 1; *pos++ = MWIFIEX_TDLS_DEF_QOS_CAPAB; } static void mwifiex_tdls_add_wmm_param_ie(struct mwifiex_private *priv, struct sk_buff *skb) { struct ieee80211_wmm_param_ie *wmm; u8 ac_vi[] = {0x42, 0x43, 0x5e, 0x00}; u8 ac_vo[] = {0x62, 0x32, 0x2f, 0x00}; u8 ac_be[] = {0x03, 0xa4, 0x00, 0x00}; u8 ac_bk[] = {0x27, 0xa4, 0x00, 0x00}; wmm = skb_put_zero(skb, sizeof(*wmm)); wmm->element_id = WLAN_EID_VENDOR_SPECIFIC; wmm->len = sizeof(*wmm) - 2; wmm->oui[0] = 0x00; /* Microsoft OUI 00:50:F2 */ wmm->oui[1] = 0x50; wmm->oui[2] = 0xf2; wmm->oui_type = 2; /* WME */ wmm->oui_subtype = 1; /* WME param */ wmm->version = 1; /* WME ver */ wmm->qos_info = 0; /* U-APSD not in use */ /* use default WMM AC parameters for TDLS link*/ memcpy(&wmm->ac[0], ac_be, sizeof(ac_be)); memcpy(&wmm->ac[1], ac_bk, sizeof(ac_bk)); memcpy(&wmm->ac[2], ac_vi, sizeof(ac_vi)); memcpy(&wmm->ac[3], ac_vo, sizeof(ac_vo)); } static void mwifiex_add_wmm_info_ie(struct mwifiex_private *priv, struct sk_buff *skb, u8 qosinfo) { u8 *buf; buf = skb_put(skb, MWIFIEX_TDLS_WMM_INFO_SIZE + sizeof(struct ieee_types_header)); *buf++ = WLAN_EID_VENDOR_SPECIFIC; *buf++ = 7; /* len */ *buf++ = 0x00; /* Microsoft OUI 00:50:F2 */ *buf++ = 0x50; *buf++ = 0xf2; *buf++ = 2; /* WME */ *buf++ = 0; /* WME info */ *buf++ = 1; /* WME ver */ *buf++ = qosinfo; /* U-APSD no in use */ } static void mwifiex_tdls_add_bss_co_2040(struct sk_buff *skb) { struct ieee_types_bss_co_2040 *bssco; bssco = skb_put(skb, sizeof(struct ieee_types_bss_co_2040)); bssco->ieee_hdr.element_id = WLAN_EID_BSS_COEX_2040; bssco->ieee_hdr.len = sizeof(struct ieee_types_bss_co_2040) - sizeof(struct ieee_types_header); bssco->bss_2040co = 0x01; } static void mwifiex_tdls_add_supported_chan(struct sk_buff *skb) { struct ieee_types_generic *supp_chan; u8 chan_supp[] = {1, 11}; supp_chan = skb_put(skb, (sizeof(struct ieee_types_header) + sizeof(chan_supp))); supp_chan->ieee_hdr.element_id = WLAN_EID_SUPPORTED_CHANNELS; supp_chan->ieee_hdr.len = sizeof(chan_supp); memcpy(supp_chan->data, chan_supp, sizeof(chan_supp)); } static void mwifiex_tdls_add_oper_class(struct sk_buff *skb) { struct ieee_types_generic *reg_class; u8 rc_list[] = {1, 1, 2, 3, 4, 12, 22, 23, 24, 25, 27, 28, 29, 30, 32, 33}; reg_class = skb_put(skb, (sizeof(struct ieee_types_header) + sizeof(rc_list))); reg_class->ieee_hdr.element_id = WLAN_EID_SUPPORTED_REGULATORY_CLASSES; reg_class->ieee_hdr.len = sizeof(rc_list); memcpy(reg_class->data, rc_list, sizeof(rc_list)); } static int mwifiex_prep_tdls_encap_data(struct mwifiex_private *priv, const u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, struct sk_buff *skb) { struct ieee80211_tdls_data *tf; int ret; u16 capab; struct ieee80211_ht_cap *ht_cap; u8 radio, *pos; capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap; tf = skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); memcpy(tf->da, peer, ETH_ALEN); memcpy(tf->sa, priv->curr_addr, ETH_ALEN); tf->ether_type = cpu_to_be16(ETH_P_TDLS); tf->payload_type = WLAN_TDLS_SNAP_RFTYPE; switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_SETUP_REQUEST; skb_put(skb, sizeof(tf->u.setup_req)); tf->u.setup_req.dialog_token = dialog_token; tf->u.setup_req.capability = cpu_to_le16(capab); ret = mwifiex_tdls_append_rates_ie(priv, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); *pos++ = WLAN_EID_HT_CAPABILITY; *pos++ = sizeof(struct ieee80211_ht_cap); ht_cap = (void *)pos; radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band); ret = mwifiex_fill_cap_info(priv, radio, ht_cap); if (ret) { dev_kfree_skb_any(skb); return ret; } if (priv->adapter->is_hw_11ac_capable) { ret = mwifiex_tdls_add_vht_capab(priv, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } mwifiex_tdls_add_aid(priv, skb); } mwifiex_tdls_add_ext_capab(priv, skb); mwifiex_tdls_add_bss_co_2040(skb); mwifiex_tdls_add_supported_chan(skb); mwifiex_tdls_add_oper_class(skb); mwifiex_add_wmm_info_ie(priv, skb, 0); break; case WLAN_TDLS_SETUP_RESPONSE: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_SETUP_RESPONSE; skb_put(skb, sizeof(tf->u.setup_resp)); tf->u.setup_resp.status_code = cpu_to_le16(status_code); tf->u.setup_resp.dialog_token = dialog_token; tf->u.setup_resp.capability = cpu_to_le16(capab); ret = mwifiex_tdls_append_rates_ie(priv, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); *pos++ = WLAN_EID_HT_CAPABILITY; *pos++ = sizeof(struct ieee80211_ht_cap); ht_cap = (void *)pos; radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band); ret = mwifiex_fill_cap_info(priv, radio, ht_cap); if (ret) { dev_kfree_skb_any(skb); return ret; } if (priv->adapter->is_hw_11ac_capable) { ret = mwifiex_tdls_add_vht_capab(priv, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } mwifiex_tdls_add_aid(priv, skb); } mwifiex_tdls_add_ext_capab(priv, skb); mwifiex_tdls_add_bss_co_2040(skb); mwifiex_tdls_add_supported_chan(skb); mwifiex_tdls_add_oper_class(skb); mwifiex_add_wmm_info_ie(priv, skb, 0); break; case WLAN_TDLS_SETUP_CONFIRM: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_SETUP_CONFIRM; skb_put(skb, sizeof(tf->u.setup_cfm)); tf->u.setup_cfm.status_code = cpu_to_le16(status_code); tf->u.setup_cfm.dialog_token = dialog_token; mwifiex_tdls_add_wmm_param_ie(priv, skb); if (priv->adapter->is_hw_11ac_capable) { ret = mwifiex_tdls_add_vht_oper(priv, peer, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } ret = mwifiex_tdls_add_ht_oper(priv, peer, 1, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } } else { ret = mwifiex_tdls_add_ht_oper(priv, peer, 0, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } } break; case WLAN_TDLS_TEARDOWN: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_TEARDOWN; skb_put(skb, sizeof(tf->u.teardown)); tf->u.teardown.reason_code = cpu_to_le16(status_code); break; case WLAN_TDLS_DISCOVERY_REQUEST: tf->category = WLAN_CATEGORY_TDLS; tf->action_code = WLAN_TDLS_DISCOVERY_REQUEST; skb_put(skb, sizeof(tf->u.discover_req)); tf->u.discover_req.dialog_token = dialog_token; break; default: mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n"); return -EINVAL; } return 0; } static void mwifiex_tdls_add_link_ie(struct sk_buff *skb, const u8 *src_addr, const u8 *peer, const u8 *bssid) { struct ieee80211_tdls_lnkie *lnkid; lnkid = skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); lnkid->ie_type = WLAN_EID_LINK_ID; lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - sizeof(struct ieee_types_header); memcpy(lnkid->bssid, bssid, ETH_ALEN); memcpy(lnkid->init_sta, src_addr, ETH_ALEN); memcpy(lnkid->resp_sta, peer, ETH_ALEN); } int mwifiex_send_tdls_data_frame(struct mwifiex_private *priv, const u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, const u8 *extra_ies, size_t extra_ies_len) { struct sk_buff *skb; struct mwifiex_txinfo *tx_info; int ret; u16 skb_len; skb_len = MWIFIEX_MIN_DATA_HEADER_LEN + max(sizeof(struct ieee80211_mgmt), sizeof(struct ieee80211_tdls_data)) + MWIFIEX_MGMT_FRAME_HEADER_SIZE + MWIFIEX_SUPPORTED_RATES + 3 + /* Qos Info */ sizeof(struct ieee_types_extcap) + sizeof(struct ieee80211_ht_cap) + sizeof(struct ieee_types_bss_co_2040) + sizeof(struct ieee80211_ht_operation) + sizeof(struct ieee80211_tdls_lnkie) + (2 * (sizeof(struct ieee_types_header))) + MWIFIEX_SUPPORTED_CHANNELS + MWIFIEX_OPERATING_CLASSES + sizeof(struct ieee80211_wmm_param_ie) + extra_ies_len; if (priv->adapter->is_hw_11ac_capable) skb_len += sizeof(struct ieee_types_vht_cap) + sizeof(struct ieee_types_vht_oper) + sizeof(struct ieee_types_aid); skb = dev_alloc_skb(skb_len); if (!skb) { mwifiex_dbg(priv->adapter, ERROR, "allocate skb failed for management frame\n"); return -ENOMEM; } skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN); switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: case WLAN_TDLS_SETUP_CONFIRM: case WLAN_TDLS_TEARDOWN: case WLAN_TDLS_DISCOVERY_REQUEST: ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code, dialog_token, status_code, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } if (extra_ies_len) skb_put_data(skb, extra_ies, extra_ies_len); mwifiex_tdls_add_link_ie(skb, priv->curr_addr, peer, priv->cfg_bssid); break; case WLAN_TDLS_SETUP_RESPONSE: ret = mwifiex_prep_tdls_encap_data(priv, peer, action_code, dialog_token, status_code, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } if (extra_ies_len) skb_put_data(skb, extra_ies, extra_ies_len); mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr, priv->cfg_bssid); break; } switch (action_code) { case WLAN_TDLS_SETUP_REQUEST: case WLAN_TDLS_SETUP_RESPONSE: skb->priority = MWIFIEX_PRIO_BK; break; default: skb->priority = MWIFIEX_PRIO_VI; break; } tx_info = MWIFIEX_SKB_TXCB(skb); memset(tx_info, 0, sizeof(*tx_info)); tx_info->bss_num = priv->bss_num; tx_info->bss_type = priv->bss_type; __net_timestamp(skb); mwifiex_queue_tx_pkt(priv, skb); /* Delay 10ms to make sure tdls setup confirm/teardown frame * is received by peer */ if (action_code == WLAN_TDLS_SETUP_CONFIRM || action_code == WLAN_TDLS_TEARDOWN) msleep_interruptible(10); return 0; } static int mwifiex_construct_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, struct sk_buff *skb) { struct ieee80211_mgmt *mgmt; u8 bc_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; int ret; u16 capab; struct ieee80211_ht_cap *ht_cap; u8 radio, *pos; capab = priv->curr_bss_params.bss_descriptor.cap_info_bitmap; mgmt = skb_put(skb, offsetof(struct ieee80211_mgmt, u)); memset(mgmt, 0, 24); memcpy(mgmt->da, peer, ETH_ALEN); memcpy(mgmt->sa, priv->curr_addr, ETH_ALEN); memcpy(mgmt->bssid, priv->cfg_bssid, ETH_ALEN); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); /* add address 4 */ pos = skb_put(skb, ETH_ALEN); switch (action_code) { case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: skb_put(skb, sizeof(mgmt->u.action.u.tdls_discover_resp) + 1); mgmt->u.action.category = WLAN_CATEGORY_PUBLIC; mgmt->u.action.u.tdls_discover_resp.action_code = WLAN_PUB_ACTION_TDLS_DISCOVER_RES; mgmt->u.action.u.tdls_discover_resp.dialog_token = dialog_token; mgmt->u.action.u.tdls_discover_resp.capability = cpu_to_le16(capab); /* move back for addr4 */ memmove(pos + ETH_ALEN, &mgmt->u.action.category, sizeof(mgmt->u.action.u.tdls_discover_resp)); /* init address 4 */ memcpy(pos, bc_addr, ETH_ALEN); ret = mwifiex_tdls_append_rates_ie(priv, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } pos = skb_put(skb, sizeof(struct ieee80211_ht_cap) + 2); *pos++ = WLAN_EID_HT_CAPABILITY; *pos++ = sizeof(struct ieee80211_ht_cap); ht_cap = (void *)pos; radio = mwifiex_band_to_radio_type(priv->curr_bss_params.band); ret = mwifiex_fill_cap_info(priv, radio, ht_cap); if (ret) { dev_kfree_skb_any(skb); return ret; } if (priv->adapter->is_hw_11ac_capable) { ret = mwifiex_tdls_add_vht_capab(priv, skb); if (ret) { dev_kfree_skb_any(skb); return ret; } mwifiex_tdls_add_aid(priv, skb); } mwifiex_tdls_add_ext_capab(priv, skb); mwifiex_tdls_add_bss_co_2040(skb); mwifiex_tdls_add_supported_chan(skb); mwifiex_tdls_add_qos_capab(skb); mwifiex_tdls_add_oper_class(skb); break; default: mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS action frame type\n"); return -EINVAL; } return 0; } int mwifiex_send_tdls_action_frame(struct mwifiex_private *priv, const u8 *peer, u8 action_code, u8 dialog_token, u16 status_code, const u8 *extra_ies, size_t extra_ies_len) { struct sk_buff *skb; struct mwifiex_txinfo *tx_info; u8 *pos; u32 pkt_type, tx_control; u16 pkt_len, skb_len; skb_len = MWIFIEX_MIN_DATA_HEADER_LEN + max(sizeof(struct ieee80211_mgmt), sizeof(struct ieee80211_tdls_data)) + MWIFIEX_MGMT_FRAME_HEADER_SIZE + MWIFIEX_SUPPORTED_RATES + sizeof(struct ieee_types_extcap) + sizeof(struct ieee80211_ht_cap) + sizeof(struct ieee_types_bss_co_2040) + sizeof(struct ieee80211_ht_operation) + sizeof(struct ieee80211_tdls_lnkie) + extra_ies_len + 3 + /* Qos Info */ ETH_ALEN; /* Address4 */ if (priv->adapter->is_hw_11ac_capable) skb_len += sizeof(struct ieee_types_vht_cap) + sizeof(struct ieee_types_vht_oper) + sizeof(struct ieee_types_aid); skb = dev_alloc_skb(skb_len); if (!skb) { mwifiex_dbg(priv->adapter, ERROR, "allocate skb failed for management frame\n"); return -ENOMEM; } skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN); pkt_type = PKT_TYPE_MGMT; tx_control = 0; pos = skb_put_zero(skb, MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len)); memcpy(pos, &pkt_type, sizeof(pkt_type)); memcpy(pos + sizeof(pkt_type), &tx_control, sizeof(tx_control)); if (mwifiex_construct_tdls_action_frame(priv, peer, action_code, dialog_token, status_code, skb)) { dev_kfree_skb_any(skb); return -EINVAL; } if (extra_ies_len) skb_put_data(skb, extra_ies, extra_ies_len); /* the TDLS link IE is always added last we are the responder */ mwifiex_tdls_add_link_ie(skb, peer, priv->curr_addr, priv->cfg_bssid); skb->priority = MWIFIEX_PRIO_VI; tx_info = MWIFIEX_SKB_TXCB(skb); memset(tx_info, 0, sizeof(*tx_info)); tx_info->bss_num = priv->bss_num; tx_info->bss_type = priv->bss_type; tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT; pkt_len = skb->len - MWIFIEX_MGMT_FRAME_HEADER_SIZE - sizeof(pkt_len); memcpy(skb->data + MWIFIEX_MGMT_FRAME_HEADER_SIZE, &pkt_len, sizeof(pkt_len)); __net_timestamp(skb); mwifiex_queue_tx_pkt(priv, skb); return 0; } /* This function process tdls action frame from peer. * Peer capabilities are stored into station node structure. */ void mwifiex_process_tdls_action_frame(struct mwifiex_private *priv, u8 *buf, int len) { struct mwifiex_sta_node *sta_ptr; u8 *peer, *pos, *end; u8 i, action, basic; u16 cap = 0; int ie_len = 0; if (len < (sizeof(struct ethhdr) + 3)) return; if (*(buf + sizeof(struct ethhdr)) != WLAN_TDLS_SNAP_RFTYPE) return; if (*(buf + sizeof(struct ethhdr) + 1) != WLAN_CATEGORY_TDLS) return; peer = buf + ETH_ALEN; action = *(buf + sizeof(struct ethhdr) + 2); mwifiex_dbg(priv->adapter, DATA, "rx:tdls action: peer=%pM, action=%d\n", peer, action); switch (action) { case WLAN_TDLS_SETUP_REQUEST: if (len < (sizeof(struct ethhdr) + TDLS_REQ_FIX_LEN)) return; pos = buf + sizeof(struct ethhdr) + 4; /* payload 1+ category 1 + action 1 + dialog 1 */ cap = get_unaligned_le16(pos); ie_len = len - sizeof(struct ethhdr) - TDLS_REQ_FIX_LEN; pos += 2; break; case WLAN_TDLS_SETUP_RESPONSE: if (len < (sizeof(struct ethhdr) + TDLS_RESP_FIX_LEN)) return; /* payload 1+ category 1 + action 1 + dialog 1 + status code 2*/ pos = buf + sizeof(struct ethhdr) + 6; cap = get_unaligned_le16(pos); ie_len = len - sizeof(struct ethhdr) - TDLS_RESP_FIX_LEN; pos += 2; break; case WLAN_TDLS_SETUP_CONFIRM: if (len < (sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN)) return; pos = buf + sizeof(struct ethhdr) + TDLS_CONFIRM_FIX_LEN; ie_len = len - sizeof(struct ethhdr) - TDLS_CONFIRM_FIX_LEN; break; default: mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS frame type.\n"); return; } sta_ptr = mwifiex_add_sta_entry(priv, peer); if (!sta_ptr) return; sta_ptr->tdls_cap.capab = cpu_to_le16(cap); for (end = pos + ie_len; pos + 1 < end; pos += 2 + pos[1]) { if (pos + 2 + pos[1] > end) break; switch (*pos) { case WLAN_EID_SUPP_RATES: sta_ptr->tdls_cap.rates_len = pos[1]; for (i = 0; i < pos[1]; i++) sta_ptr->tdls_cap.rates[i] = pos[i + 2]; break; case WLAN_EID_EXT_SUPP_RATES: basic = sta_ptr->tdls_cap.rates_len; for (i = 0; i < pos[1]; i++) sta_ptr->tdls_cap.rates[basic + i] = pos[i + 2]; sta_ptr->tdls_cap.rates_len += pos[1]; break; case WLAN_EID_HT_CAPABILITY: memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos, sizeof(struct ieee80211_ht_cap)); sta_ptr->is_11n_enabled = 1; break; case WLAN_EID_HT_OPERATION: memcpy(&sta_ptr->tdls_cap.ht_oper, pos, sizeof(struct ieee80211_ht_operation)); break; case WLAN_EID_BSS_COEX_2040: sta_ptr->tdls_cap.coex_2040 = pos[2]; break; case WLAN_EID_EXT_CAPABILITY: memcpy((u8 *)&sta_ptr->tdls_cap.extcap, pos, sizeof(struct ieee_types_header) + min_t(u8, pos[1], 8)); break; case WLAN_EID_RSN: memcpy((u8 *)&sta_ptr->tdls_cap.rsn_ie, pos, sizeof(struct ieee_types_header) + min_t(u8, pos[1], IEEE_MAX_IE_SIZE - sizeof(struct ieee_types_header))); break; case WLAN_EID_QOS_CAPA: sta_ptr->tdls_cap.qos_info = pos[2]; break; case WLAN_EID_VHT_OPERATION: if (priv->adapter->is_hw_11ac_capable) memcpy(&sta_ptr->tdls_cap.vhtoper, pos, sizeof(struct ieee80211_vht_operation)); break; case WLAN_EID_VHT_CAPABILITY: if (priv->adapter->is_hw_11ac_capable) { memcpy((u8 *)&sta_ptr->tdls_cap.vhtcap, pos, sizeof(struct ieee80211_vht_cap)); sta_ptr->is_11ac_enabled = 1; } break; case WLAN_EID_AID: if (priv->adapter->is_hw_11ac_capable) sta_ptr->tdls_cap.aid = get_unaligned_le16((pos + 2)); default: break; } } return; } static int mwifiex_tdls_process_config_link(struct mwifiex_private *priv, const u8 *peer) { struct mwifiex_sta_node *sta_ptr; struct mwifiex_ds_tdls_oper tdls_oper; memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); sta_ptr = mwifiex_get_sta_entry(priv, peer); if (!sta_ptr || sta_ptr->tdls_status == TDLS_SETUP_FAILURE) { mwifiex_dbg(priv->adapter, ERROR, "link absent for peer %pM; cannot config\n", peer); return -EINVAL; } memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN); tdls_oper.tdls_action = MWIFIEX_TDLS_CONFIG_LINK; return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, HostCmd_ACT_GEN_SET, 0, &tdls_oper, true); } static int mwifiex_tdls_process_create_link(struct mwifiex_private *priv, const u8 *peer) { struct mwifiex_sta_node *sta_ptr; struct mwifiex_ds_tdls_oper tdls_oper; memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); sta_ptr = mwifiex_get_sta_entry(priv, peer); if (sta_ptr && sta_ptr->tdls_status == TDLS_SETUP_INPROGRESS) { mwifiex_dbg(priv->adapter, WARN, "Setup already in progress for peer %pM\n", peer); return 0; } sta_ptr = mwifiex_add_sta_entry(priv, peer); if (!sta_ptr) return -ENOMEM; sta_ptr->tdls_status = TDLS_SETUP_INPROGRESS; mwifiex_hold_tdls_packets(priv, peer); memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN); tdls_oper.tdls_action = MWIFIEX_TDLS_CREATE_LINK; return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, HostCmd_ACT_GEN_SET, 0, &tdls_oper, true); } static int mwifiex_tdls_process_disable_link(struct mwifiex_private *priv, const u8 *peer) { struct mwifiex_sta_node *sta_ptr; struct mwifiex_ds_tdls_oper tdls_oper; unsigned long flags; memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); sta_ptr = mwifiex_get_sta_entry(priv, peer); if (sta_ptr) { if (sta_ptr->is_11n_enabled) { mwifiex_11n_cleanup_reorder_tbl(priv); spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); } mwifiex_del_sta_entry(priv, peer); } mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN); mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP); memcpy(&tdls_oper.peer_mac, peer, ETH_ALEN); tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK; return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, HostCmd_ACT_GEN_SET, 0, &tdls_oper, true); } static int mwifiex_tdls_process_enable_link(struct mwifiex_private *priv, const u8 *peer) { struct mwifiex_sta_node *sta_ptr; struct ieee80211_mcs_info mcs; unsigned long flags; int i; sta_ptr = mwifiex_get_sta_entry(priv, peer); if (sta_ptr && (sta_ptr->tdls_status != TDLS_SETUP_FAILURE)) { mwifiex_dbg(priv->adapter, MSG, "tdls: enable link %pM success\n", peer); sta_ptr->tdls_status = TDLS_SETUP_COMPLETE; mcs = sta_ptr->tdls_cap.ht_capb.mcs; if (mcs.rx_mask[0] != 0xff) sta_ptr->is_11n_enabled = true; if (sta_ptr->is_11n_enabled) { if (le16_to_cpu(sta_ptr->tdls_cap.ht_capb.cap_info) & IEEE80211_HT_CAP_MAX_AMSDU) sta_ptr->max_amsdu = MWIFIEX_TX_DATA_BUF_SIZE_8K; else sta_ptr->max_amsdu = MWIFIEX_TX_DATA_BUF_SIZE_4K; for (i = 0; i < MAX_NUM_TID; i++) sta_ptr->ampdu_sta[i] = priv->aggr_prio_tbl[i].ampdu_user; } else { for (i = 0; i < MAX_NUM_TID; i++) sta_ptr->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED; } if (sta_ptr->tdls_cap.extcap.ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) { mwifiex_config_tdls_enable(priv); mwifiex_config_tdls_cs_params(priv); } memset(sta_ptr->rx_seq, 0xff, sizeof(sta_ptr->rx_seq)); mwifiex_restore_tdls_packets(priv, peer, TDLS_SETUP_COMPLETE); mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_SETUP_COMPLETE); } else { mwifiex_dbg(priv->adapter, ERROR, "tdls: enable link %pM failed\n", peer); if (sta_ptr) { mwifiex_11n_cleanup_reorder_tbl(priv); spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); mwifiex_del_sta_entry(priv, peer); } mwifiex_restore_tdls_packets(priv, peer, TDLS_LINK_TEARDOWN); mwifiex_auto_tdls_update_peer_status(priv, peer, TDLS_NOT_SETUP); return -1; } return 0; } int mwifiex_tdls_oper(struct mwifiex_private *priv, const u8 *peer, u8 action) { switch (action) { case MWIFIEX_TDLS_ENABLE_LINK: return mwifiex_tdls_process_enable_link(priv, peer); case MWIFIEX_TDLS_DISABLE_LINK: return mwifiex_tdls_process_disable_link(priv, peer); case MWIFIEX_TDLS_CREATE_LINK: return mwifiex_tdls_process_create_link(priv, peer); case MWIFIEX_TDLS_CONFIG_LINK: return mwifiex_tdls_process_config_link(priv, peer); } return 0; } int mwifiex_get_tdls_link_status(struct mwifiex_private *priv, const u8 *mac) { struct mwifiex_sta_node *sta_ptr; sta_ptr = mwifiex_get_sta_entry(priv, mac); if (sta_ptr) return sta_ptr->tdls_status; return TDLS_NOT_SETUP; } int mwifiex_get_tdls_list(struct mwifiex_private *priv, struct tdls_peer_info *buf) { struct mwifiex_sta_node *sta_ptr; struct tdls_peer_info *peer = buf; int count = 0; unsigned long flags; if (!ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info)) return 0; /* make sure we are in station mode and connected */ if (!(priv->bss_type == MWIFIEX_BSS_TYPE_STA && priv->media_connected)) return 0; spin_lock_irqsave(&priv->sta_list_spinlock, flags); list_for_each_entry(sta_ptr, &priv->sta_list, list) { if (mwifiex_is_tdls_link_setup(sta_ptr->tdls_status)) { ether_addr_copy(peer->peer_addr, sta_ptr->mac_addr); peer++; count++; if (count >= MWIFIEX_MAX_TDLS_PEER_SUPPORTED) break; } } spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); return count; } void mwifiex_disable_all_tdls_links(struct mwifiex_private *priv) { struct mwifiex_sta_node *sta_ptr; struct mwifiex_ds_tdls_oper tdls_oper; unsigned long flags; if (list_empty(&priv->sta_list)) return; list_for_each_entry(sta_ptr, &priv->sta_list, list) { memset(&tdls_oper, 0, sizeof(struct mwifiex_ds_tdls_oper)); if (sta_ptr->is_11n_enabled) { mwifiex_11n_cleanup_reorder_tbl(priv); spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); } mwifiex_restore_tdls_packets(priv, sta_ptr->mac_addr, TDLS_LINK_TEARDOWN); memcpy(&tdls_oper.peer_mac, sta_ptr->mac_addr, ETH_ALEN); tdls_oper.tdls_action = MWIFIEX_TDLS_DISABLE_LINK; if (mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_OPER, HostCmd_ACT_GEN_SET, 0, &tdls_oper, false)) mwifiex_dbg(priv->adapter, ERROR, "Disable link failed for TDLS peer %pM", sta_ptr->mac_addr); } mwifiex_del_all_sta_list(priv); } int mwifiex_tdls_check_tx(struct mwifiex_private *priv, struct sk_buff *skb) { struct mwifiex_auto_tdls_peer *peer; unsigned long flags; u8 mac[ETH_ALEN]; ether_addr_copy(mac, skb->data); spin_lock_irqsave(&priv->auto_tdls_lock, flags); list_for_each_entry(peer, &priv->auto_tdls_list, list) { if (!memcmp(mac, peer->mac_addr, ETH_ALEN)) { if (peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH && peer->tdls_status == TDLS_NOT_SETUP && (peer->failure_count < MWIFIEX_TDLS_MAX_FAIL_COUNT)) { peer->tdls_status = TDLS_SETUP_INPROGRESS; mwifiex_dbg(priv->adapter, INFO, "setup TDLS link, peer=%pM rssi=%d\n", peer->mac_addr, peer->rssi); cfg80211_tdls_oper_request(priv->netdev, peer->mac_addr, NL80211_TDLS_SETUP, 0, GFP_ATOMIC); peer->do_setup = false; priv->check_tdls_tx = false; } else if (peer->failure_count < MWIFIEX_TDLS_MAX_FAIL_COUNT && peer->do_discover) { mwifiex_send_tdls_data_frame(priv, peer->mac_addr, WLAN_TDLS_DISCOVERY_REQUEST, 1, 0, NULL, 0); peer->do_discover = false; } } } spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); return 0; } void mwifiex_flush_auto_tdls_list(struct mwifiex_private *priv) { struct mwifiex_auto_tdls_peer *peer, *tmp_node; unsigned long flags; spin_lock_irqsave(&priv->auto_tdls_lock, flags); list_for_each_entry_safe(peer, tmp_node, &priv->auto_tdls_list, list) { list_del(&peer->list); kfree(peer); } INIT_LIST_HEAD(&priv->auto_tdls_list); spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); priv->check_tdls_tx = false; } void mwifiex_add_auto_tdls_peer(struct mwifiex_private *priv, const u8 *mac) { struct mwifiex_auto_tdls_peer *tdls_peer; unsigned long flags; if (!priv->adapter->auto_tdls) return; spin_lock_irqsave(&priv->auto_tdls_lock, flags); list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) { if (!memcmp(tdls_peer->mac_addr, mac, ETH_ALEN)) { tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS; tdls_peer->rssi_jiffies = jiffies; spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); return; } } /* create new TDLS peer */ tdls_peer = kzalloc(sizeof(*tdls_peer), GFP_ATOMIC); if (tdls_peer) { ether_addr_copy(tdls_peer->mac_addr, mac); tdls_peer->tdls_status = TDLS_SETUP_INPROGRESS; tdls_peer->rssi_jiffies = jiffies; INIT_LIST_HEAD(&tdls_peer->list); list_add_tail(&tdls_peer->list, &priv->auto_tdls_list); mwifiex_dbg(priv->adapter, INFO, "Add auto TDLS peer= %pM to list\n", mac); } spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); } void mwifiex_auto_tdls_update_peer_status(struct mwifiex_private *priv, const u8 *mac, u8 link_status) { struct mwifiex_auto_tdls_peer *peer; unsigned long flags; if (!priv->adapter->auto_tdls) return; spin_lock_irqsave(&priv->auto_tdls_lock, flags); list_for_each_entry(peer, &priv->auto_tdls_list, list) { if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) { if ((link_status == TDLS_NOT_SETUP) && (peer->tdls_status == TDLS_SETUP_INPROGRESS)) peer->failure_count++; else if (mwifiex_is_tdls_link_setup(link_status)) peer->failure_count = 0; peer->tdls_status = link_status; break; } } spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); } void mwifiex_auto_tdls_update_peer_signal(struct mwifiex_private *priv, u8 *mac, s8 snr, s8 nflr) { struct mwifiex_auto_tdls_peer *peer; unsigned long flags; if (!priv->adapter->auto_tdls) return; spin_lock_irqsave(&priv->auto_tdls_lock, flags); list_for_each_entry(peer, &priv->auto_tdls_list, list) { if (!memcmp(peer->mac_addr, mac, ETH_ALEN)) { peer->rssi = nflr - snr; peer->rssi_jiffies = jiffies; break; } } spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); } void mwifiex_check_auto_tdls(struct timer_list *t) { struct mwifiex_private *priv = from_timer(priv, t, auto_tdls_timer); struct mwifiex_auto_tdls_peer *tdls_peer; unsigned long flags; u16 reason = WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED; if (WARN_ON_ONCE(!priv || !priv->adapter)) { pr_err("mwifiex: %s: adapter or private structure is NULL\n", __func__); return; } if (unlikely(!priv->adapter->auto_tdls)) return; if (!priv->auto_tdls_timer_active) { mwifiex_dbg(priv->adapter, INFO, "auto TDLS timer inactive; return"); return; } priv->check_tdls_tx = false; spin_lock_irqsave(&priv->auto_tdls_lock, flags); list_for_each_entry(tdls_peer, &priv->auto_tdls_list, list) { if ((jiffies - tdls_peer->rssi_jiffies) > (MWIFIEX_AUTO_TDLS_IDLE_TIME * HZ)) { tdls_peer->rssi = 0; tdls_peer->do_discover = true; priv->check_tdls_tx = true; } if (((tdls_peer->rssi >= MWIFIEX_TDLS_RSSI_LOW) || !tdls_peer->rssi) && mwifiex_is_tdls_link_setup(tdls_peer->tdls_status)) { tdls_peer->tdls_status = TDLS_LINK_TEARDOWN; mwifiex_dbg(priv->adapter, MSG, "teardown TDLS link,peer=%pM rssi=%d\n", tdls_peer->mac_addr, -tdls_peer->rssi); tdls_peer->do_discover = true; priv->check_tdls_tx = true; cfg80211_tdls_oper_request(priv->netdev, tdls_peer->mac_addr, NL80211_TDLS_TEARDOWN, reason, GFP_ATOMIC); } else if (tdls_peer->rssi && tdls_peer->rssi <= MWIFIEX_TDLS_RSSI_HIGH && tdls_peer->tdls_status == TDLS_NOT_SETUP && tdls_peer->failure_count < MWIFIEX_TDLS_MAX_FAIL_COUNT) { priv->check_tdls_tx = true; tdls_peer->do_setup = true; mwifiex_dbg(priv->adapter, INFO, "check TDLS with peer=%pM\t" "rssi=%d\n", tdls_peer->mac_addr, tdls_peer->rssi); } } spin_unlock_irqrestore(&priv->auto_tdls_lock, flags); mod_timer(&priv->auto_tdls_timer, jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); } void mwifiex_setup_auto_tdls_timer(struct mwifiex_private *priv) { timer_setup(&priv->auto_tdls_timer, mwifiex_check_auto_tdls, 0); priv->auto_tdls_timer_active = true; mod_timer(&priv->auto_tdls_timer, jiffies + msecs_to_jiffies(MWIFIEX_TIMER_10S)); } void mwifiex_clean_auto_tdls(struct mwifiex_private *priv) { if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && priv->adapter->auto_tdls && priv->bss_type == MWIFIEX_BSS_TYPE_STA) { priv->auto_tdls_timer_active = false; del_timer(&priv->auto_tdls_timer); mwifiex_flush_auto_tdls_list(priv); } } static int mwifiex_config_tdls(struct mwifiex_private *priv, u8 enable) { struct mwifiex_tdls_config config; config.enable = cpu_to_le16(enable); return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, ACT_TDLS_CS_ENABLE_CONFIG, 0, &config, true); } int mwifiex_config_tdls_enable(struct mwifiex_private *priv) { return mwifiex_config_tdls(priv, true); } int mwifiex_config_tdls_disable(struct mwifiex_private *priv) { return mwifiex_config_tdls(priv, false); } int mwifiex_config_tdls_cs_params(struct mwifiex_private *priv) { struct mwifiex_tdls_config_cs_params config_tdls_cs_params; config_tdls_cs_params.unit_time = MWIFIEX_DEF_CS_UNIT_TIME; config_tdls_cs_params.thr_otherlink = MWIFIEX_DEF_CS_THR_OTHERLINK; config_tdls_cs_params.thr_directlink = MWIFIEX_DEF_THR_DIRECTLINK; return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, ACT_TDLS_CS_PARAMS, 0, &config_tdls_cs_params, true); } int mwifiex_stop_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac) { struct mwifiex_tdls_stop_cs_params stop_tdls_cs_params; ether_addr_copy(stop_tdls_cs_params.peer_mac, peer_mac); return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, ACT_TDLS_CS_STOP, 0, &stop_tdls_cs_params, true); } int mwifiex_start_tdls_cs(struct mwifiex_private *priv, const u8 *peer_mac, u8 primary_chan, u8 second_chan_offset, u8 band) { struct mwifiex_tdls_init_cs_params start_tdls_cs_params; ether_addr_copy(start_tdls_cs_params.peer_mac, peer_mac); start_tdls_cs_params.primary_chan = primary_chan; start_tdls_cs_params.second_chan_offset = second_chan_offset; start_tdls_cs_params.band = band; start_tdls_cs_params.switch_time = cpu_to_le16(MWIFIEX_DEF_CS_TIME); start_tdls_cs_params.switch_timeout = cpu_to_le16(MWIFIEX_DEF_CS_TIMEOUT); start_tdls_cs_params.reg_class = MWIFIEX_DEF_CS_REG_CLASS; start_tdls_cs_params.periodicity = MWIFIEX_DEF_CS_PERIODICITY; return mwifiex_send_cmd(priv, HostCmd_CMD_TDLS_CONFIG, ACT_TDLS_CS_INIT, 0, &start_tdls_cs_params, true); }
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