/* * mac80211 configuration hooks for cfg80211 * * Copyright 2006-2010 Johannes Berg * * This file is GPLv2 as found in COPYING. */ #include #include #include #include #include #include #include #include "ieee80211_i.h" #include "driver-ops.h" #include "cfg.h" #include "rate.h" #include "mesh.h" static struct net_device *ieee80211_add_iface(struct wiphy *wiphy, char *name, enum nl80211_iftype type, u32 *flags, struct vif_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct net_device *dev; struct ieee80211_sub_if_data *sdata; int err; err = ieee80211_if_add(local, name, &dev, type, params); if (err) return ERR_PTR(err); if (type == NL80211_IFTYPE_MONITOR && flags) { sdata = IEEE80211_DEV_TO_SUB_IF(dev); sdata->u.mntr_flags = *flags; } return dev; } static int ieee80211_del_iface(struct wiphy *wiphy, struct net_device *dev) { ieee80211_if_remove(IEEE80211_DEV_TO_SUB_IF(dev)); return 0; } static int ieee80211_change_iface(struct wiphy *wiphy, struct net_device *dev, enum nl80211_iftype type, u32 *flags, struct vif_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); int ret; ret = ieee80211_if_change_type(sdata, type); if (ret) return ret; if (type == NL80211_IFTYPE_AP_VLAN && params && params->use_4addr == 0) rcu_assign_pointer(sdata->u.vlan.sta, NULL); else if (type == NL80211_IFTYPE_STATION && params && params->use_4addr >= 0) sdata->u.mgd.use_4addr = params->use_4addr; if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) { struct ieee80211_local *local = sdata->local; if (ieee80211_sdata_running(sdata)) { /* * Prohibit MONITOR_FLAG_COOK_FRAMES to be * changed while the interface is up. * Else we would need to add a lot of cruft * to update everything: * cooked_mntrs, monitor and all fif_* counters * reconfigure hardware */ if ((*flags & MONITOR_FLAG_COOK_FRAMES) != (sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES)) return -EBUSY; ieee80211_adjust_monitor_flags(sdata, -1); sdata->u.mntr_flags = *flags; ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); } else { /* * Because the interface is down, ieee80211_do_stop * and ieee80211_do_open take care of "everything" * mentioned in the comment above. */ sdata->u.mntr_flags = *flags; } } return 0; } static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr, struct key_params *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta = NULL; struct ieee80211_key *key; int err; if (!ieee80211_sdata_running(sdata)) return -ENETDOWN; /* reject WEP and TKIP keys if WEP failed to initialize */ switch (params->cipher) { case WLAN_CIPHER_SUITE_WEP40: case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_WEP104: if (IS_ERR(sdata->local->wep_tx_tfm)) return -EINVAL; break; default: break; } key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, params->key, params->seq_len, params->seq); if (IS_ERR(key)) return PTR_ERR(key); if (pairwise) key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { sta = sta_info_get_bss(sdata, mac_addr); if (!sta) { ieee80211_key_free(sdata->local, key); err = -ENOENT; goto out_unlock; } } err = ieee80211_key_link(key, sdata, sta); if (err) ieee80211_key_free(sdata->local, key); out_unlock: mutex_unlock(&sdata->local->sta_mtx); return err; } static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr) { struct ieee80211_sub_if_data *sdata; struct sta_info *sta; int ret; sdata = IEEE80211_DEV_TO_SUB_IF(dev); mutex_lock(&sdata->local->sta_mtx); if (mac_addr) { ret = -ENOENT; sta = sta_info_get_bss(sdata, mac_addr); if (!sta) goto out_unlock; if (pairwise) { if (sta->ptk) { ieee80211_key_free(sdata->local, sta->ptk); ret = 0; } } else { if (sta->gtk[key_idx]) { ieee80211_key_free(sdata->local, sta->gtk[key_idx]); ret = 0; } } goto out_unlock; } if (!sdata->keys[key_idx]) { ret = -ENOENT; goto out_unlock; } ieee80211_key_free(sdata->local, sdata->keys[key_idx]); WARN_ON(sdata->keys[key_idx]); ret = 0; out_unlock: mutex_unlock(&sdata->local->sta_mtx); return ret; } static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool pairwise, const u8 *mac_addr, void *cookie, void (*callback)(void *cookie, struct key_params *params)) { struct ieee80211_sub_if_data *sdata; struct sta_info *sta = NULL; u8 seq[6] = {0}; struct key_params params; struct ieee80211_key *key = NULL; u32 iv32; u16 iv16; int err = -ENOENT; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); if (mac_addr) { sta = sta_info_get_bss(sdata, mac_addr); if (!sta) goto out; if (pairwise) key = sta->ptk; else if (key_idx < NUM_DEFAULT_KEYS) key = sta->gtk[key_idx]; } else key = sdata->keys[key_idx]; if (!key) goto out; memset(¶ms, 0, sizeof(params)); params.cipher = key->conf.cipher; switch (key->conf.cipher) { case WLAN_CIPHER_SUITE_TKIP: iv32 = key->u.tkip.tx.iv32; iv16 = key->u.tkip.tx.iv16; if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE) drv_get_tkip_seq(sdata->local, key->conf.hw_key_idx, &iv32, &iv16); seq[0] = iv16 & 0xff; seq[1] = (iv16 >> 8) & 0xff; seq[2] = iv32 & 0xff; seq[3] = (iv32 >> 8) & 0xff; seq[4] = (iv32 >> 16) & 0xff; seq[5] = (iv32 >> 24) & 0xff; params.seq = seq; params.seq_len = 6; break; case WLAN_CIPHER_SUITE_CCMP: seq[0] = key->u.ccmp.tx_pn[5]; seq[1] = key->u.ccmp.tx_pn[4]; seq[2] = key->u.ccmp.tx_pn[3]; seq[3] = key->u.ccmp.tx_pn[2]; seq[4] = key->u.ccmp.tx_pn[1]; seq[5] = key->u.ccmp.tx_pn[0]; params.seq = seq; params.seq_len = 6; break; case WLAN_CIPHER_SUITE_AES_CMAC: seq[0] = key->u.aes_cmac.tx_pn[5]; seq[1] = key->u.aes_cmac.tx_pn[4]; seq[2] = key->u.aes_cmac.tx_pn[3]; seq[3] = key->u.aes_cmac.tx_pn[2]; seq[4] = key->u.aes_cmac.tx_pn[1]; seq[5] = key->u.aes_cmac.tx_pn[0]; params.seq = seq; params.seq_len = 6; break; } params.key = key->conf.key; params.key_len = key->conf.keylen; callback(cookie, ¶ms); err = 0; out: rcu_read_unlock(); return err; } static int ieee80211_config_default_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx, bool uni, bool multi) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_set_default_key(sdata, key_idx, uni, multi); return 0; } static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy, struct net_device *dev, u8 key_idx) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_set_default_mgmt_key(sdata, key_idx); return 0; } static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = sta->sdata; sinfo->generation = sdata->local->sta_generation; sinfo->filled = STATION_INFO_INACTIVE_TIME | STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES | STATION_INFO_RX_PACKETS | STATION_INFO_TX_PACKETS | STATION_INFO_TX_RETRIES | STATION_INFO_TX_FAILED | STATION_INFO_TX_BITRATE | STATION_INFO_RX_DROP_MISC; sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx); sinfo->rx_bytes = sta->rx_bytes; sinfo->tx_bytes = sta->tx_bytes; sinfo->rx_packets = sta->rx_packets; sinfo->tx_packets = sta->tx_packets; sinfo->tx_retries = sta->tx_retry_count; sinfo->tx_failed = sta->tx_retry_failed; sinfo->rx_dropped_misc = sta->rx_dropped; if ((sta->local->hw.flags & IEEE80211_HW_SIGNAL_DBM) || (sta->local->hw.flags & IEEE80211_HW_SIGNAL_UNSPEC)) { sinfo->filled |= STATION_INFO_SIGNAL | STATION_INFO_SIGNAL_AVG; sinfo->signal = (s8)sta->last_signal; sinfo->signal_avg = (s8) -ewma_read(&sta->avg_signal); } sinfo->txrate.flags = 0; if (sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS) sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS; if (sta->last_tx_rate.flags & IEEE80211_TX_RC_40_MHZ_WIDTH) sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; if (sta->last_tx_rate.flags & IEEE80211_TX_RC_SHORT_GI) sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI; if (!(sta->last_tx_rate.flags & IEEE80211_TX_RC_MCS)) { struct ieee80211_supported_band *sband; sband = sta->local->hw.wiphy->bands[ sta->local->hw.conf.channel->band]; sinfo->txrate.legacy = sband->bitrates[sta->last_tx_rate.idx].bitrate; } else sinfo->txrate.mcs = sta->last_tx_rate.idx; if (ieee80211_vif_is_mesh(&sdata->vif)) { #ifdef CONFIG_MAC80211_MESH sinfo->filled |= STATION_INFO_LLID | STATION_INFO_PLID | STATION_INFO_PLINK_STATE; sinfo->llid = le16_to_cpu(sta->llid); sinfo->plid = le16_to_cpu(sta->plid); sinfo->plink_state = sta->plink_state; #endif } } static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; int ret = -ENOENT; rcu_read_lock(); sta = sta_info_get_by_idx(sdata, idx); if (sta) { ret = 0; memcpy(mac, sta->sta.addr, ETH_ALEN); sta_set_sinfo(sta, sinfo); } rcu_read_unlock(); return ret; } static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev, int idx, struct survey_info *survey) { struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); return drv_get_survey(local, idx, survey); } static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_info *sinfo) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct sta_info *sta; int ret = -ENOENT; rcu_read_lock(); sta = sta_info_get_bss(sdata, mac); if (sta) { ret = 0; sta_set_sinfo(sta, sinfo); } rcu_read_unlock(); return ret; } /* * This handles both adding a beacon and setting new beacon info */ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata, struct beacon_parameters *params) { struct beacon_data *new, *old; int new_head_len, new_tail_len; int size; int err = -EINVAL; old = sdata->u.ap.beacon; /* head must not be zero-length */ if (params->head && !params->head_len) return -EINVAL; /* * This is a kludge. beacon interval should really be part * of the beacon information. */ if (params->interval && (sdata->vif.bss_conf.beacon_int != params->interval)) { sdata->vif.bss_conf.beacon_int = params->interval; ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_INT); } /* Need to have a beacon head if we don't have one yet */ if (!params->head && !old) return err; /* sorry, no way to start beaconing without dtim period */ if (!params->dtim_period && !old) return err; /* new or old head? */ if (params->head) new_head_len = params->head_len; else new_head_len = old->head_len; /* new or old tail? */ if (params->tail || !old) /* params->tail_len will be zero for !params->tail */ new_tail_len = params->tail_len; else new_tail_len = old->tail_len; size = sizeof(*new) + new_head_len + new_tail_len; new = kzalloc(size, GFP_KERNEL); if (!new) return -ENOMEM; /* start filling the new info now */ /* new or old dtim period? */ if (params->dtim_period) new->dtim_period = params->dtim_period; else new->dtim_period = old->dtim_period; /* * pointers go into the block we allocated, * memory is | beacon_data | head | tail | */ new->head = ((u8 *) new) + sizeof(*new); new->tail = new->head + new_head_len; new->head_len = new_head_len; new->tail_len = new_tail_len; /* copy in head */ if (params->head) memcpy(new->head, params->head, new_head_len); else memcpy(new->head, old->head, new_head_len); /* copy in optional tail */ if (params->tail) memcpy(new->tail, params->tail, new_tail_len); else if (old) memcpy(new->tail, old->tail, new_tail_len); sdata->vif.bss_conf.dtim_period = new->dtim_period; rcu_assign_pointer(sdata->u.ap.beacon, new); synchronize_rcu(); kfree(old); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON); return 0; } static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev, struct beacon_parameters *params) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; sdata = IEEE80211_DEV_TO_SUB_IF(dev); old = sdata->u.ap.beacon; if (old) return -EALREADY; return ieee80211_config_beacon(sdata, params); } static int ieee80211_set_beacon(struct wiphy *wiphy, struct net_device *dev, struct beacon_parameters *params) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; sdata = IEEE80211_DEV_TO_SUB_IF(dev); old = sdata->u.ap.beacon; if (!old) return -ENOENT; return ieee80211_config_beacon(sdata, params); } static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata; struct beacon_data *old; sdata = IEEE80211_DEV_TO_SUB_IF(dev); old = sdata->u.ap.beacon; if (!old) return -ENOENT; rcu_assign_pointer(sdata->u.ap.beacon, NULL); synchronize_rcu(); kfree(old); ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); return 0; } /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */ struct iapp_layer2_update { u8 da[ETH_ALEN]; /* broadcast */ u8 sa[ETH_ALEN]; /* STA addr */ __be16 len; /* 6 */ u8 dsap; /* 0 */ u8 ssap; /* 0 */ u8 control; u8 xid_info[3]; } __packed; static void ieee80211_send_layer2_update(struct sta_info *sta) { struct iapp_layer2_update *msg; struct sk_buff *skb; /* Send Level 2 Update Frame to update forwarding tables in layer 2 * bridge devices */ skb = dev_alloc_skb(sizeof(*msg)); if (!skb) return; msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg)); /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID) * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */ memset(msg->da, 0xff, ETH_ALEN); memcpy(msg->sa, sta->sta.addr, ETH_ALEN); msg->len = htons(6); msg->dsap = 0; msg->ssap = 0x01; /* NULL LSAP, CR Bit: Response */ msg->control = 0xaf; /* XID response lsb.1111F101. * F=0 (no poll command; unsolicited frame) */ msg->xid_info[0] = 0x81; /* XID format identifier */ msg->xid_info[1] = 1; /* LLC types/classes: Type 1 LLC */ msg->xid_info[2] = 0; /* XID sender's receive window size (RW) */ skb->dev = sta->sdata->dev; skb->protocol = eth_type_trans(skb, sta->sdata->dev); memset(skb->cb, 0, sizeof(skb->cb)); netif_rx_ni(skb); } static void sta_apply_parameters(struct ieee80211_local *local, struct sta_info *sta, struct station_parameters *params) { unsigned long flags; u32 rates; int i, j; struct ieee80211_supported_band *sband; struct ieee80211_sub_if_data *sdata = sta->sdata; u32 mask, set; sband = local->hw.wiphy->bands[local->oper_channel->band]; spin_lock_irqsave(&sta->flaglock, flags); mask = params->sta_flags_mask; set = params->sta_flags_set; if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { sta->flags &= ~WLAN_STA_AUTHORIZED; if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) sta->flags |= WLAN_STA_AUTHORIZED; } if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { sta->flags &= ~WLAN_STA_SHORT_PREAMBLE; if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) sta->flags |= WLAN_STA_SHORT_PREAMBLE; } if (mask & BIT(NL80211_STA_FLAG_WME)) { sta->flags &= ~WLAN_STA_WME; if (set & BIT(NL80211_STA_FLAG_WME)) sta->flags |= WLAN_STA_WME; } if (mask & BIT(NL80211_STA_FLAG_MFP)) { sta->flags &= ~WLAN_STA_MFP; if (set & BIT(NL80211_STA_FLAG_MFP)) sta->flags |= WLAN_STA_MFP; } spin_unlock_irqrestore(&sta->flaglock, flags); /* * cfg80211 validates this (1-2007) and allows setting the AID * only when creating a new station entry */ if (params->aid) sta->sta.aid = params->aid; /* * FIXME: updating the following information is racy when this * function is called from ieee80211_change_station(). * However, all this information should be static so * maybe we should just reject attemps to change it. */ if (params->listen_interval >= 0) sta->listen_interval = params->listen_interval; if (params->supported_rates) { rates = 0; for (i = 0; i < params->supported_rates_len; i++) { int rate = (params->supported_rates[i] & 0x7f) * 5; for (j = 0; j < sband->n_bitrates; j++) { if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); } } sta->sta.supp_rates[local->oper_channel->band] = rates; } if (params->ht_capa) ieee80211_ht_cap_ie_to_sta_ht_cap(sband, params->ht_capa, &sta->sta.ht_cap); if (ieee80211_vif_is_mesh(&sdata->vif) && params->plink_action) { switch (params->plink_action) { case PLINK_ACTION_OPEN: mesh_plink_open(sta); break; case PLINK_ACTION_BLOCK: mesh_plink_block(sta); break; } } } static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *sdata; int err; int layer2_update; if (params->vlan) { sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN && sdata->vif.type != NL80211_IFTYPE_AP) return -EINVAL; } else sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (compare_ether_addr(mac, sdata->vif.addr) == 0) return -EINVAL; if (is_multicast_ether_addr(mac)) return -EINVAL; sta = sta_info_alloc(sdata, mac, GFP_KERNEL); if (!sta) return -ENOMEM; sta->flags = WLAN_STA_AUTH | WLAN_STA_ASSOC; sta_apply_parameters(local, sta, params); rate_control_rate_init(sta); layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN || sdata->vif.type == NL80211_IFTYPE_AP; err = sta_info_insert_rcu(sta); if (err) { rcu_read_unlock(); return err; } if (layer2_update) ieee80211_send_layer2_update(sta); rcu_read_unlock(); return 0; } static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (mac) return sta_info_destroy_addr_bss(sdata, mac); sta_info_flush(local, sdata); return 0; } static int ieee80211_change_station(struct wiphy *wiphy, struct net_device *dev, u8 *mac, struct station_parameters *params) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wiphy_priv(wiphy); struct sta_info *sta; struct ieee80211_sub_if_data *vlansdata; rcu_read_lock(); sta = sta_info_get_bss(sdata, mac); if (!sta) { rcu_read_unlock(); return -ENOENT; } if (params->vlan && params->vlan != sta->sdata->dev) { vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); if (vlansdata->vif.type != NL80211_IFTYPE_AP_VLAN && vlansdata->vif.type != NL80211_IFTYPE_AP) { rcu_read_unlock(); return -EINVAL; } if (params->vlan->ieee80211_ptr->use_4addr) { if (vlansdata->u.vlan.sta) { rcu_read_unlock(); return -EBUSY; } rcu_assign_pointer(vlansdata->u.vlan.sta, sta); } sta->sdata = vlansdata; ieee80211_send_layer2_update(sta); } sta_apply_parameters(local, sta, params); rcu_read_unlock(); return 0; } #ifdef CONFIG_MAC80211_MESH static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; int err; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } err = mesh_path_add(dst, sdata); if (err) { rcu_read_unlock(); return err; } mpath = mesh_path_lookup(dst, sdata); if (!mpath) { rcu_read_unlock(); return -ENXIO; } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (dst) return mesh_path_del(dst, sdata); mesh_path_flush(sdata); return 0; } static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; struct sta_info *sta; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); sta = sta_info_get(sdata, next_hop); if (!sta) { rcu_read_unlock(); return -ENOENT; } mpath = mesh_path_lookup(dst, sdata); if (!mpath) { rcu_read_unlock(); return -ENOENT; } mesh_path_fix_nexthop(mpath, sta); rcu_read_unlock(); return 0; } static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop, struct mpath_info *pinfo) { if (mpath->next_hop) memcpy(next_hop, mpath->next_hop->sta.addr, ETH_ALEN); else memset(next_hop, 0, ETH_ALEN); pinfo->generation = mesh_paths_generation; pinfo->filled = MPATH_INFO_FRAME_QLEN | MPATH_INFO_SN | MPATH_INFO_METRIC | MPATH_INFO_EXPTIME | MPATH_INFO_DISCOVERY_TIMEOUT | MPATH_INFO_DISCOVERY_RETRIES | MPATH_INFO_FLAGS; pinfo->frame_qlen = mpath->frame_queue.qlen; pinfo->sn = mpath->sn; pinfo->metric = mpath->metric; if (time_before(jiffies, mpath->exp_time)) pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies); pinfo->discovery_timeout = jiffies_to_msecs(mpath->discovery_timeout); pinfo->discovery_retries = mpath->discovery_retries; pinfo->flags = 0; if (mpath->flags & MESH_PATH_ACTIVE) pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE; if (mpath->flags & MESH_PATH_RESOLVING) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; if (mpath->flags & MESH_PATH_SN_VALID) pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID; if (mpath->flags & MESH_PATH_FIXED) pinfo->flags |= NL80211_MPATH_FLAG_FIXED; if (mpath->flags & MESH_PATH_RESOLVING) pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING; pinfo->flags = mpath->flags; } static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup(dst, sdata); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev, int idx, u8 *dst, u8 *next_hop, struct mpath_info *pinfo) { struct ieee80211_sub_if_data *sdata; struct mesh_path *mpath; sdata = IEEE80211_DEV_TO_SUB_IF(dev); rcu_read_lock(); mpath = mesh_path_lookup_by_idx(idx, sdata); if (!mpath) { rcu_read_unlock(); return -ENOENT; } memcpy(dst, mpath->dst, ETH_ALEN); mpath_set_pinfo(mpath, next_hop, pinfo); rcu_read_unlock(); return 0; } static int ieee80211_get_mesh_config(struct wiphy *wiphy, struct net_device *dev, struct mesh_config *conf) { struct ieee80211_sub_if_data *sdata; sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config)); return 0; } static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask) { return (mask >> (parm-1)) & 0x1; } static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh, const struct mesh_setup *setup) { u8 *new_ie; const u8 *old_ie; /* first allocate the new vendor information element */ new_ie = NULL; old_ie = ifmsh->vendor_ie; ifmsh->vendor_ie_len = setup->vendor_ie_len; if (setup->vendor_ie_len) { new_ie = kmemdup(setup->vendor_ie, setup->vendor_ie_len, GFP_KERNEL); if (!new_ie) return -ENOMEM; } /* now copy the rest of the setup parameters */ ifmsh->mesh_id_len = setup->mesh_id_len; memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len); ifmsh->mesh_pp_id = setup->path_sel_proto; ifmsh->mesh_pm_id = setup->path_metric; ifmsh->vendor_ie = new_ie; kfree(old_ie); return 0; } static int ieee80211_update_mesh_config(struct wiphy *wiphy, struct net_device *dev, u32 mask, const struct mesh_config *nconf) { struct mesh_config *conf; struct ieee80211_sub_if_data *sdata; struct ieee80211_if_mesh *ifmsh; sdata = IEEE80211_DEV_TO_SUB_IF(dev); ifmsh = &sdata->u.mesh; /* Set the config options which we are interested in setting */ conf = &(sdata->u.mesh.mshcfg); if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask)) conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask)) conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask)) conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask)) conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks; if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask)) conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries; if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask)) conf->dot11MeshTTL = nconf->dot11MeshTTL; if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask)) conf->dot11MeshTTL = nconf->element_ttl; if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) conf->auto_open_plinks = nconf->auto_open_plinks; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask)) conf->dot11MeshHWMPmaxPREQretries = nconf->dot11MeshHWMPmaxPREQretries; if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask)) conf->path_refresh_time = nconf->path_refresh_time; if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask)) conf->min_discovery_timeout = nconf->min_discovery_timeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask)) conf->dot11MeshHWMPactivePathTimeout = nconf->dot11MeshHWMPactivePathTimeout; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask)) conf->dot11MeshHWMPpreqMinInterval = nconf->dot11MeshHWMPpreqMinInterval; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, mask)) conf->dot11MeshHWMPnetDiameterTraversalTime = nconf->dot11MeshHWMPnetDiameterTraversalTime; if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) { conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode; ieee80211_mesh_root_setup(ifmsh); } return 0; } static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, const struct mesh_config *conf, const struct mesh_setup *setup) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; int err; memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config)); err = copy_mesh_setup(ifmsh, setup); if (err) return err; ieee80211_start_mesh(sdata); return 0; } static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); ieee80211_stop_mesh(sdata); return 0; } #endif static int ieee80211_change_bss(struct wiphy *wiphy, struct net_device *dev, struct bss_parameters *params) { struct ieee80211_sub_if_data *sdata; u32 changed = 0; sdata = IEEE80211_DEV_TO_SUB_IF(dev); if (params->use_cts_prot >= 0) { sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot; changed |= BSS_CHANGED_ERP_CTS_PROT; } if (params->use_short_preamble >= 0) { sdata->vif.bss_conf.use_short_preamble = params->use_short_preamble; changed |= BSS_CHANGED_ERP_PREAMBLE; } if (!sdata->vif.bss_conf.use_short_slot && sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) { sdata->vif.bss_conf.use_short_slot = true; changed |= BSS_CHANGED_ERP_SLOT; } if (params->use_short_slot_time >= 0) { sdata->vif.bss_conf.use_short_slot = params->use_short_slot_time; changed |= BSS_CHANGED_ERP_SLOT; } if (params->basic_rates) { int i, j; u32 rates = 0; struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_supported_band *sband = wiphy->bands[local->oper_channel->band]; for (i = 0; i < params->basic_rates_len; i++) { int rate = (params->basic_rates[i] & 0x7f) * 5; for (j = 0; j < sband->n_bitrates; j++) { if (sband->bitrates[j].bitrate == rate) rates |= BIT(j); } } sdata->vif.bss_conf.basic_rates = rates; changed |= BSS_CHANGED_BASIC_RATES; } if (params->ap_isolate >= 0) { if (params->ap_isolate) sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS; else sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS; } if (params->ht_opmode >= 0) { sdata->vif.bss_conf.ht_operation_mode = (u16) params->ht_opmode; changed |= BSS_CHANGED_HT; } ieee80211_bss_info_change_notify(sdata, changed); return 0; } static int ieee80211_set_txq_params(struct wiphy *wiphy, struct ieee80211_txq_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_tx_queue_params p; if (!local->ops->conf_tx) return -EOPNOTSUPP; memset(&p, 0, sizeof(p)); p.aifs = params->aifs; p.cw_max = params->cwmax; p.cw_min = params->cwmin; p.txop = params->txop; /* * Setting tx queue params disables u-apsd because it's only * called in master mode. */ p.uapsd = false; if (drv_conf_tx(local, params->queue, &p)) { wiphy_debug(local->hw.wiphy, "failed to set TX queue parameters for queue %d\n", params->queue); return -EINVAL; } return 0; } static int ieee80211_set_channel(struct wiphy *wiphy, struct net_device *netdev, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = NULL; if (netdev) sdata = IEEE80211_DEV_TO_SUB_IF(netdev); switch (ieee80211_get_channel_mode(local, NULL)) { case CHAN_MODE_HOPPING: return -EBUSY; case CHAN_MODE_FIXED: if (local->oper_channel != chan) return -EBUSY; if (!sdata && local->_oper_channel_type == channel_type) return 0; break; case CHAN_MODE_UNDEFINED: break; } local->oper_channel = chan; if (!ieee80211_set_channel_type(local, sdata, channel_type)) return -EBUSY; ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR) ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); return 0; } #ifdef CONFIG_PM static int ieee80211_suspend(struct wiphy *wiphy) { return __ieee80211_suspend(wiphy_priv(wiphy)); } static int ieee80211_resume(struct wiphy *wiphy) { return __ieee80211_resume(wiphy_priv(wiphy)); } #else #define ieee80211_suspend NULL #define ieee80211_resume NULL #endif static int ieee80211_scan(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_scan_request *req) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (ieee80211_vif_type_p2p(&sdata->vif)) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_MESH_POINT: case NL80211_IFTYPE_P2P_CLIENT: break; case NL80211_IFTYPE_P2P_GO: if (sdata->local->ops->hw_scan) break; /* FIXME: implement NoA while scanning in software */ return -EOPNOTSUPP; case NL80211_IFTYPE_AP: if (sdata->u.ap.beacon) return -EOPNOTSUPP; break; default: return -EOPNOTSUPP; } return ieee80211_request_scan(sdata, req); } static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_auth_request *req) { return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_assoc_request *req) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (ieee80211_get_channel_mode(local, sdata)) { case CHAN_MODE_HOPPING: return -EBUSY; case CHAN_MODE_FIXED: if (local->oper_channel == req->bss->channel) break; return -EBUSY; case CHAN_MODE_UNDEFINED: break; } return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req); } static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_deauth_request *req, void *cookie) { return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req, cookie); } static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_disassoc_request *req, void *cookie) { return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req, cookie); } static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev, struct cfg80211_ibss_params *params) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); switch (ieee80211_get_channel_mode(local, sdata)) { case CHAN_MODE_HOPPING: return -EBUSY; case CHAN_MODE_FIXED: if (!params->channel_fixed) return -EBUSY; if (local->oper_channel == params->channel) break; return -EBUSY; case CHAN_MODE_UNDEFINED: break; } return ieee80211_ibss_join(sdata, params); } static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); return ieee80211_ibss_leave(sdata); } static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) { struct ieee80211_local *local = wiphy_priv(wiphy); int err; if (changed & WIPHY_PARAM_FRAG_THRESHOLD) { err = drv_set_frag_threshold(local, wiphy->frag_threshold); if (err) return err; } if (changed & WIPHY_PARAM_COVERAGE_CLASS) { err = drv_set_coverage_class(local, wiphy->coverage_class); if (err) return err; } if (changed & WIPHY_PARAM_RTS_THRESHOLD) { err = drv_set_rts_threshold(local, wiphy->rts_threshold); if (err) return err; } if (changed & WIPHY_PARAM_RETRY_SHORT) local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; if (changed & WIPHY_PARAM_RETRY_LONG) local->hw.conf.long_frame_max_tx_count = wiphy->retry_long; if (changed & (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG)) ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS); return 0; } static int ieee80211_set_tx_power(struct wiphy *wiphy, enum nl80211_tx_power_setting type, int mbm) { struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_channel *chan = local->hw.conf.channel; u32 changes = 0; switch (type) { case NL80211_TX_POWER_AUTOMATIC: local->user_power_level = -1; break; case NL80211_TX_POWER_LIMITED: if (mbm < 0 || (mbm % 100)) return -EOPNOTSUPP; local->user_power_level = MBM_TO_DBM(mbm); break; case NL80211_TX_POWER_FIXED: if (mbm < 0 || (mbm % 100)) return -EOPNOTSUPP; /* TODO: move to cfg80211 when it knows the channel */ if (MBM_TO_DBM(mbm) > chan->max_power) return -EINVAL; local->user_power_level = MBM_TO_DBM(mbm); break; } ieee80211_hw_config(local, changes); return 0; } static int ieee80211_get_tx_power(struct wiphy *wiphy, int *dbm) { struct ieee80211_local *local = wiphy_priv(wiphy); *dbm = local->hw.conf.power_level; return 0; } static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev, const u8 *addr) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN); return 0; } static void ieee80211_rfkill_poll(struct wiphy *wiphy) { struct ieee80211_local *local = wiphy_priv(wiphy); drv_rfkill_poll(local); } #ifdef CONFIG_NL80211_TESTMODE static int ieee80211_testmode_cmd(struct wiphy *wiphy, void *data, int len) { struct ieee80211_local *local = wiphy_priv(wiphy); if (!local->ops->testmode_cmd) return -EOPNOTSUPP; return local->ops->testmode_cmd(&local->hw, data, len); } #endif int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, enum ieee80211_smps_mode smps_mode) { const u8 *ap; enum ieee80211_smps_mode old_req; int err; old_req = sdata->u.mgd.req_smps; sdata->u.mgd.req_smps = smps_mode; if (old_req == smps_mode && smps_mode != IEEE80211_SMPS_AUTOMATIC) return 0; /* * If not associated, or current association is not an HT * association, there's no need to send an action frame. */ if (!sdata->u.mgd.associated || sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { mutex_lock(&sdata->local->iflist_mtx); ieee80211_recalc_smps(sdata->local); mutex_unlock(&sdata->local->iflist_mtx); return 0; } ap = sdata->u.mgd.associated->bssid; if (smps_mode == IEEE80211_SMPS_AUTOMATIC) { if (sdata->u.mgd.powersave) smps_mode = IEEE80211_SMPS_DYNAMIC; else smps_mode = IEEE80211_SMPS_OFF; } /* send SM PS frame to AP */ err = ieee80211_send_smps_action(sdata, smps_mode, ap, ap); if (err) sdata->u.mgd.req_smps = old_req; return err; } static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, bool enabled, int timeout) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) return -EOPNOTSUPP; if (enabled == sdata->u.mgd.powersave && timeout == local->dynamic_ps_forced_timeout) return 0; sdata->u.mgd.powersave = enabled; local->dynamic_ps_forced_timeout = timeout; /* no change, but if automatic follow powersave */ mutex_lock(&sdata->u.mgd.mtx); __ieee80211_request_smps(sdata, sdata->u.mgd.req_smps); mutex_unlock(&sdata->u.mgd.mtx); if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); ieee80211_recalc_ps(local, -1); return 0; } static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, struct net_device *dev, s32 rssi_thold, u32 rssi_hyst) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_vif *vif = &sdata->vif; struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; if (rssi_thold == bss_conf->cqm_rssi_thold && rssi_hyst == bss_conf->cqm_rssi_hyst) return 0; bss_conf->cqm_rssi_thold = rssi_thold; bss_conf->cqm_rssi_hyst = rssi_hyst; if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { if (sdata->vif.type != NL80211_IFTYPE_STATION) return -EOPNOTSUPP; return 0; } /* tell the driver upon association, unless already associated */ if (sdata->u.mgd.associated) ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); return 0; } static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *dev, const u8 *addr, const struct cfg80211_bitrate_mask *mask) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); int i; /* * This _could_ be supported by providing a hook for * drivers for this function, but at this point it * doesn't seem worth bothering. */ if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) return -EOPNOTSUPP; for (i = 0; i < IEEE80211_NUM_BANDS; i++) sdata->rc_rateidx_mask[i] = mask->control[i].legacy; return 0; } static int ieee80211_remain_on_channel_hw(struct ieee80211_local *local, struct net_device *dev, struct ieee80211_channel *chan, enum nl80211_channel_type chantype, unsigned int duration, u64 *cookie) { int ret; u32 random_cookie; lockdep_assert_held(&local->mtx); if (local->hw_roc_cookie) return -EBUSY; /* must be nonzero */ random_cookie = random32() | 1; *cookie = random_cookie; local->hw_roc_dev = dev; local->hw_roc_cookie = random_cookie; local->hw_roc_channel = chan; local->hw_roc_channel_type = chantype; local->hw_roc_duration = duration; ret = drv_remain_on_channel(local, chan, chantype, duration); if (ret) { local->hw_roc_channel = NULL; local->hw_roc_cookie = 0; } return ret; } static int ieee80211_remain_on_channel(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_channel *chan, enum nl80211_channel_type channel_type, unsigned int duration, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; if (local->ops->remain_on_channel) { int ret; mutex_lock(&local->mtx); ret = ieee80211_remain_on_channel_hw(local, dev, chan, channel_type, duration, cookie); local->hw_roc_for_tx = false; mutex_unlock(&local->mtx); return ret; } return ieee80211_wk_remain_on_channel(sdata, chan, channel_type, duration, cookie); } static int ieee80211_cancel_remain_on_channel_hw(struct ieee80211_local *local, u64 cookie) { int ret; lockdep_assert_held(&local->mtx); if (local->hw_roc_cookie != cookie) return -ENOENT; ret = drv_cancel_remain_on_channel(local); if (ret) return ret; local->hw_roc_cookie = 0; local->hw_roc_channel = NULL; ieee80211_recalc_idle(local); return 0; } static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, struct net_device *dev, u64 cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; if (local->ops->cancel_remain_on_channel) { int ret; mutex_lock(&local->mtx); ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); mutex_unlock(&local->mtx); return ret; } return ieee80211_wk_cancel_remain_on_channel(sdata, cookie); } static enum work_done_result ieee80211_offchan_tx_done(struct ieee80211_work *wk, struct sk_buff *skb) { /* * Use the data embedded in the work struct for reporting * here so if the driver mangled the SKB before dropping * it (which is the only way we really should get here) * then we don't report mangled data. * * If there was no wait time, then by the time we get here * the driver will likely not have reported the status yet, * so in that case userspace will have to deal with it. */ if (wk->offchan_tx.wait && wk->offchan_tx.frame) cfg80211_mgmt_tx_status(wk->sdata->dev, (unsigned long) wk->offchan_tx.frame, wk->ie, wk->ie_len, false, GFP_KERNEL); return WORK_DONE_DESTROY; } static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_channel *chan, bool offchan, enum nl80211_channel_type channel_type, bool channel_type_valid, unsigned int wait, const u8 *buf, size_t len, u64 *cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct sk_buff *skb; struct sta_info *sta; struct ieee80211_work *wk; const struct ieee80211_mgmt *mgmt = (void *)buf; u32 flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | IEEE80211_TX_CTL_REQ_TX_STATUS; bool is_offchan = false; /* Check that we are on the requested channel for transmission */ if (chan != local->tmp_channel && chan != local->oper_channel) is_offchan = true; if (channel_type_valid && (channel_type != local->tmp_channel_type && channel_type != local->_oper_channel_type)) is_offchan = true; if (chan == local->hw_roc_channel) { /* TODO: check channel type? */ is_offchan = false; flags |= IEEE80211_TX_CTL_TX_OFFCHAN; } if (is_offchan && !offchan) return -EBUSY; switch (sdata->vif.type) { case NL80211_IFTYPE_ADHOC: case NL80211_IFTYPE_AP: case NL80211_IFTYPE_AP_VLAN: case NL80211_IFTYPE_P2P_GO: case NL80211_IFTYPE_MESH_POINT: if (!ieee80211_is_action(mgmt->frame_control) || mgmt->u.action.category == WLAN_CATEGORY_PUBLIC) break; rcu_read_lock(); sta = sta_info_get(sdata, mgmt->da); rcu_read_unlock(); if (!sta) return -ENOLINK; break; case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: break; default: return -EOPNOTSUPP; } skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); if (!skb) return -ENOMEM; skb_reserve(skb, local->hw.extra_tx_headroom); memcpy(skb_put(skb, len), buf, len); IEEE80211_SKB_CB(skb)->flags = flags; skb->dev = sdata->dev; *cookie = (unsigned long) skb; if (is_offchan && local->ops->remain_on_channel) { unsigned int duration; int ret; mutex_lock(&local->mtx); /* * If the duration is zero, then the driver * wouldn't actually do anything. Set it to * 100 for now. * * TODO: cancel the off-channel operation * when we get the SKB's TX status and * the wait time was zero before. */ duration = 100; if (wait) duration = wait; ret = ieee80211_remain_on_channel_hw(local, dev, chan, channel_type, duration, cookie); if (ret) { kfree_skb(skb); mutex_unlock(&local->mtx); return ret; } local->hw_roc_for_tx = true; local->hw_roc_duration = wait; /* * queue up frame for transmission after * ieee80211_ready_on_channel call */ /* modify cookie to prevent API mismatches */ *cookie ^= 2; IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; local->hw_roc_skb = skb; local->hw_roc_skb_for_status = skb; mutex_unlock(&local->mtx); return 0; } /* * Can transmit right away if the channel was the * right one and there's no wait involved... If a * wait is involved, we might otherwise not be on * the right channel for long enough! */ if (!is_offchan && !wait && !sdata->vif.bss_conf.idle) { ieee80211_tx_skb(sdata, skb); return 0; } wk = kzalloc(sizeof(*wk) + len, GFP_KERNEL); if (!wk) { kfree_skb(skb); return -ENOMEM; } wk->type = IEEE80211_WORK_OFFCHANNEL_TX; wk->chan = chan; wk->sdata = sdata; wk->done = ieee80211_offchan_tx_done; wk->offchan_tx.frame = skb; wk->offchan_tx.wait = wait; wk->ie_len = len; memcpy(wk->ie, buf, len); ieee80211_add_work(wk); return 0; } static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, struct net_device *dev, u64 cookie) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); struct ieee80211_local *local = sdata->local; struct ieee80211_work *wk; int ret = -ENOENT; mutex_lock(&local->mtx); if (local->ops->cancel_remain_on_channel) { cookie ^= 2; ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); if (ret == 0) { kfree_skb(local->hw_roc_skb); local->hw_roc_skb = NULL; local->hw_roc_skb_for_status = NULL; } mutex_unlock(&local->mtx); return ret; } list_for_each_entry(wk, &local->work_list, list) { if (wk->sdata != sdata) continue; if (wk->type != IEEE80211_WORK_OFFCHANNEL_TX) continue; if (cookie != (unsigned long) wk->offchan_tx.frame) continue; wk->timeout = jiffies; ieee80211_queue_work(&local->hw, &local->work_work); ret = 0; break; } mutex_unlock(&local->mtx); return ret; } static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, struct net_device *dev, u16 frame_type, bool reg) { struct ieee80211_local *local = wiphy_priv(wiphy); if (frame_type != (IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ)) return; if (reg) local->probe_req_reg++; else local->probe_req_reg--; ieee80211_queue_work(&local->hw, &local->reconfig_filter); } static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); if (local->started) return -EOPNOTSUPP; return drv_set_antenna(local, tx_ant, rx_ant); } static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant) { struct ieee80211_local *local = wiphy_priv(wiphy); return drv_get_antenna(local, tx_ant, rx_ant); } struct cfg80211_ops mac80211_config_ops = { .add_virtual_intf = ieee80211_add_iface, .del_virtual_intf = ieee80211_del_iface, .change_virtual_intf = ieee80211_change_iface, .add_key = ieee80211_add_key, .del_key = ieee80211_del_key, .get_key = ieee80211_get_key, .set_default_key = ieee80211_config_default_key, .set_default_mgmt_key = ieee80211_config_default_mgmt_key, .add_beacon = ieee80211_add_beacon, .set_beacon = ieee80211_set_beacon, .del_beacon = ieee80211_del_beacon, .add_station = ieee80211_add_station, .del_station = ieee80211_del_station, .change_station = ieee80211_change_station, .get_station = ieee80211_get_station, .dump_station = ieee80211_dump_station, .dump_survey = ieee80211_dump_survey, #ifdef CONFIG_MAC80211_MESH .add_mpath = ieee80211_add_mpath, .del_mpath = ieee80211_del_mpath, .change_mpath = ieee80211_change_mpath, .get_mpath = ieee80211_get_mpath, .dump_mpath = ieee80211_dump_mpath, .update_mesh_config = ieee80211_update_mesh_config, .get_mesh_config = ieee80211_get_mesh_config, .join_mesh = ieee80211_join_mesh, .leave_mesh = ieee80211_leave_mesh, #endif .change_bss = ieee80211_change_bss, .set_txq_params = ieee80211_set_txq_params, .set_channel = ieee80211_set_channel, .suspend = ieee80211_suspend, .resume = ieee80211_resume, .scan = ieee80211_scan, .auth = ieee80211_auth, .assoc = ieee80211_assoc, .deauth = ieee80211_deauth, .disassoc = ieee80211_disassoc, .join_ibss = ieee80211_join_ibss, .leave_ibss = ieee80211_leave_ibss, .set_wiphy_params = ieee80211_set_wiphy_params, .set_tx_power = ieee80211_set_tx_power, .get_tx_power = ieee80211_get_tx_power, .set_wds_peer = ieee80211_set_wds_peer, .rfkill_poll = ieee80211_rfkill_poll, CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd) .set_power_mgmt = ieee80211_set_power_mgmt, .set_bitrate_mask = ieee80211_set_bitrate_mask, .remain_on_channel = ieee80211_remain_on_channel, .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel, .mgmt_tx = ieee80211_mgmt_tx, .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, .mgmt_frame_register = ieee80211_mgmt_frame_register, .set_antenna = ieee80211_set_antenna, .get_antenna = ieee80211_get_antenna, };