diff options
Diffstat (limited to 'net/mac80211/cfg.c')
| -rw-r--r-- | net/mac80211/cfg.c | 2747 |
1 files changed, 2747 insertions, 0 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c new file mode 100644 index 00000000..8bd6370e --- /dev/null +++ b/net/mac80211/cfg.c @@ -0,0 +1,2747 @@ +/* + * mac80211 configuration hooks for cfg80211 + * + * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> + * + * This file is GPLv2 as found in COPYING. + */ + +#include <linux/ieee80211.h> +#include <linux/nl80211.h> +#include <linux/rtnetlink.h> +#include <linux/slab.h> +#include <net/net_namespace.h> +#include <linux/rcupdate.h> +#include <linux/if_ether.h> +#include <net/cfg80211.h> +#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_INIT_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_set_noack_map(struct wiphy *wiphy, + struct net_device *dev, + u16 noack_map) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + sdata->noack_map = noack_map; + 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) { + if (ieee80211_vif_is_mesh(&sdata->vif)) + sta = sta_info_get(sdata, mac_addr); + else + 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 = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + struct ieee80211_key *key = NULL; + int ret; + + mutex_lock(&local->sta_mtx); + mutex_lock(&local->key_mtx); + + if (mac_addr) { + ret = -ENOENT; + + sta = sta_info_get_bss(sdata, mac_addr); + if (!sta) + goto out_unlock; + + if (pairwise) + key = key_mtx_dereference(local, sta->ptk); + else + key = key_mtx_dereference(local, sta->gtk[key_idx]); + } else + key = key_mtx_dereference(local, sdata->keys[key_idx]); + + if (!key) { + ret = -ENOENT; + goto out_unlock; + } + + __ieee80211_key_free(key); + + ret = 0; + out_unlock: + mutex_unlock(&local->key_mtx); + mutex_unlock(&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; + u64 pn64; + 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 = rcu_dereference(sta->ptk); + else if (key_idx < NUM_DEFAULT_KEYS) + key = rcu_dereference(sta->gtk[key_idx]); + } else + key = rcu_dereference(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: + pn64 = atomic64_read(&key->u.ccmp.tx_pn); + seq[0] = pn64; + seq[1] = pn64 >> 8; + seq[2] = pn64 >> 16; + seq[3] = pn64 >> 24; + seq[4] = pn64 >> 32; + seq[5] = pn64 >> 40; + params.seq = seq; + params.seq_len = 6; + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + pn64 = atomic64_read(&key->u.aes_cmac.tx_pn); + seq[0] = pn64; + seq[1] = pn64 >> 8; + seq[2] = pn64 >> 16; + seq[3] = pn64 >> 24; + seq[4] = pn64 >> 32; + seq[5] = pn64 >> 40; + 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 rate_idx_to_bitrate(struct rate_info *rate, struct sta_info *sta, int idx) +{ + if (!(rate->flags & RATE_INFO_FLAGS_MCS)) { + struct ieee80211_supported_band *sband; + sband = sta->local->hw.wiphy->bands[ + sta->local->hw.conf.channel->band]; + rate->legacy = sband->bitrates[idx].bitrate; + } else + rate->mcs = idx; +} + +void sta_set_rate_info_tx(struct sta_info *sta, + const struct ieee80211_tx_rate *rate, + struct rate_info *rinfo) +{ + rinfo->flags = 0; + if (rate->flags & IEEE80211_TX_RC_MCS) + rinfo->flags |= RATE_INFO_FLAGS_MCS; + if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + rinfo->flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; + if (rate->flags & IEEE80211_TX_RC_SHORT_GI) + rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; + rate_idx_to_bitrate(rinfo, sta, rate->idx); +} + +static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) +{ + struct ieee80211_sub_if_data *sdata = sta->sdata; + struct timespec uptime; + + 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_BITRATE | + STATION_INFO_RX_DROP_MISC | + STATION_INFO_BSS_PARAM | + STATION_INFO_CONNECTED_TIME | + STATION_INFO_STA_FLAGS | + STATION_INFO_BEACON_LOSS_COUNT; + + do_posix_clock_monotonic_gettime(&uptime); + sinfo->connected_time = uptime.tv_sec - sta->last_connected; + + 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; + sinfo->beacon_loss_count = sta->beacon_loss_count; + + 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); + } + + sta_set_rate_info_tx(sta, &sta->last_tx_rate, &sinfo->txrate); + + sinfo->rxrate.flags = 0; + if (sta->last_rx_rate_flag & RX_FLAG_HT) + sinfo->rxrate.flags |= RATE_INFO_FLAGS_MCS; + if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) + sinfo->rxrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH; + if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) + sinfo->rxrate.flags |= RATE_INFO_FLAGS_SHORT_GI; + rate_idx_to_bitrate(&sinfo->rxrate, sta, sta->last_rx_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 + } + + sinfo->bss_param.flags = 0; + if (sdata->vif.bss_conf.use_cts_prot) + sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT; + if (sdata->vif.bss_conf.use_short_preamble) + sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE; + if (sdata->vif.bss_conf.use_short_slot) + sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME; + sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period; + sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int; + + sinfo->sta_flags.set = 0; + sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | + BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | + BIT(NL80211_STA_FLAG_WME) | + BIT(NL80211_STA_FLAG_MFP) | + BIT(NL80211_STA_FLAG_AUTHENTICATED) | + BIT(NL80211_STA_FLAG_TDLS_PEER); + if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) + sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED); + if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE)) + sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE); + if (test_sta_flag(sta, WLAN_STA_WME)) + sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME); + if (test_sta_flag(sta, WLAN_STA_MFP)) + sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP); + if (test_sta_flag(sta, WLAN_STA_AUTH)) + sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED); + if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) + sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER); +} + + +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; +} + +static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, + const u8 *resp, size_t resp_len) +{ + struct sk_buff *new, *old; + + if (!resp || !resp_len) + return 1; + + old = rtnl_dereference(sdata->u.ap.probe_resp); + + new = dev_alloc_skb(resp_len); + if (!new) + return -ENOMEM; + + memcpy(skb_put(new, resp_len), resp, resp_len); + + rcu_assign_pointer(sdata->u.ap.probe_resp, new); + if (old) { + /* TODO: use call_rcu() */ + synchronize_rcu(); + dev_kfree_skb(old); + } + + return 0; +} + +static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, + struct cfg80211_beacon_data *params) +{ + struct beacon_data *new, *old; + int new_head_len, new_tail_len; + int size, err; + u32 changed = BSS_CHANGED_BEACON; + + old = rtnl_dereference(sdata->u.ap.beacon); + + /* Need to have a beacon head if we don't have one yet */ + if (!params->head && !old) + return -EINVAL; + + /* 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 */ + + /* + * 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); + + err = ieee80211_set_probe_resp(sdata, params->probe_resp, + params->probe_resp_len); + if (err < 0) + return err; + if (err == 0) + changed |= BSS_CHANGED_AP_PROBE_RESP; + + rcu_assign_pointer(sdata->u.ap.beacon, new); + + if (old) + kfree_rcu(old, rcu_head); + + return changed; +} + +static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_ap_settings *params) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct beacon_data *old; + struct ieee80211_sub_if_data *vlan; + u32 changed = BSS_CHANGED_BEACON_INT | + BSS_CHANGED_BEACON_ENABLED | + BSS_CHANGED_BEACON | + BSS_CHANGED_SSID; + int err; + + old = rtnl_dereference(sdata->u.ap.beacon); + if (old) + return -EALREADY; + + /* + * Apply control port protocol, this allows us to + * not encrypt dynamic WEP control frames. + */ + sdata->control_port_protocol = params->crypto.control_port_ethertype; + sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt; + list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) { + vlan->control_port_protocol = + params->crypto.control_port_ethertype; + vlan->control_port_no_encrypt = + params->crypto.control_port_no_encrypt; + } + + sdata->vif.bss_conf.beacon_int = params->beacon_interval; + sdata->vif.bss_conf.dtim_period = params->dtim_period; + + sdata->vif.bss_conf.ssid_len = params->ssid_len; + if (params->ssid_len) + memcpy(sdata->vif.bss_conf.ssid, params->ssid, + params->ssid_len); + sdata->vif.bss_conf.hidden_ssid = + (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE); + + err = ieee80211_assign_beacon(sdata, ¶ms->beacon); + if (err < 0) + return err; + changed |= err; + + ieee80211_bss_info_change_notify(sdata, changed); + + return 0; +} + +static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_beacon_data *params) +{ + struct ieee80211_sub_if_data *sdata; + struct beacon_data *old; + int err; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + old = rtnl_dereference(sdata->u.ap.beacon); + if (!old) + return -ENOENT; + + err = ieee80211_assign_beacon(sdata, params); + if (err < 0) + return err; + ieee80211_bss_info_change_notify(sdata, err); + return 0; +} + +static int ieee80211_stop_ap(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 = rtnl_dereference(sdata->u.ap.beacon); + if (!old) + return -ENOENT; + + RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); + + kfree_rcu(old, rcu_head); + + 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 int sta_apply_parameters(struct ieee80211_local *local, + struct sta_info *sta, + struct station_parameters *params) +{ + int ret = 0; + 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]; + + mask = params->sta_flags_mask; + set = params->sta_flags_set; + + /* + * In mesh mode, we can clear AUTHENTICATED flag but must + * also make ASSOCIATED follow appropriately for the driver + * API. See also below, after AUTHORIZED changes. + */ + if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { + /* cfg80211 should not allow this in non-mesh modes */ + if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) + return -EINVAL; + + if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED) && + !test_sta_flag(sta, WLAN_STA_AUTH)) { + ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); + if (ret) + return ret; + ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); + if (ret) + return ret; + } + } + + if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { + if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) + ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED); + else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) + ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC); + if (ret) + return ret; + } + + if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) { + /* cfg80211 should not allow this in non-mesh modes */ + if (WARN_ON(!ieee80211_vif_is_mesh(&sdata->vif))) + return -EINVAL; + + if (!(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && + test_sta_flag(sta, WLAN_STA_AUTH)) { + ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); + if (ret) + return ret; + ret = sta_info_move_state(sta, IEEE80211_STA_NONE); + if (ret) + return ret; + } + } + + + if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) { + if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) + set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); + else + clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE); + } + + if (mask & BIT(NL80211_STA_FLAG_WME)) { + if (set & BIT(NL80211_STA_FLAG_WME)) { + set_sta_flag(sta, WLAN_STA_WME); + sta->sta.wme = true; + } else { + clear_sta_flag(sta, WLAN_STA_WME); + sta->sta.wme = false; + } + } + + if (mask & BIT(NL80211_STA_FLAG_MFP)) { + if (set & BIT(NL80211_STA_FLAG_MFP)) + set_sta_flag(sta, WLAN_STA_MFP); + else + clear_sta_flag(sta, WLAN_STA_MFP); + } + + if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) { + if (set & BIT(NL80211_STA_FLAG_TDLS_PEER)) + set_sta_flag(sta, WLAN_STA_TDLS_PEER); + else + clear_sta_flag(sta, WLAN_STA_TDLS_PEER); + } + + if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) { + sta->sta.uapsd_queues = params->uapsd_queues; + sta->sta.max_sp = params->max_sp; + } + + /* + * 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(sdata, sband, + params->ht_capa, + &sta->sta.ht_cap); + + if (ieee80211_vif_is_mesh(&sdata->vif)) { +#ifdef CONFIG_MAC80211_MESH + if (sdata->u.mesh.security & IEEE80211_MESH_SEC_SECURED) + switch (params->plink_state) { + case NL80211_PLINK_LISTEN: + case NL80211_PLINK_ESTAB: + case NL80211_PLINK_BLOCKED: + sta->plink_state = params->plink_state; + break; + default: + /* nothing */ + break; + } + else + switch (params->plink_action) { + case PLINK_ACTION_OPEN: + mesh_plink_open(sta); + break; + case PLINK_ACTION_BLOCK: + mesh_plink_block(sta); + break; + } +#endif + } + + return 0; +} + +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_info_pre_move_state(sta, IEEE80211_STA_AUTH); + sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); + + err = sta_apply_parameters(local, sta, params); + if (err) { + sta_info_free(local, sta); + return err; + } + + /* + * for TDLS, rate control should be initialized only when supported + * rates are known. + */ + if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) + 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; + int err; + + mutex_lock(&local->sta_mtx); + + sta = sta_info_get_bss(sdata, mac); + if (!sta) { + mutex_unlock(&local->sta_mtx); + return -ENOENT; + } + + /* in station mode, supported rates are only valid with TDLS */ + if (sdata->vif.type == NL80211_IFTYPE_STATION && + params->supported_rates && + !test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + mutex_unlock(&local->sta_mtx); + return -EINVAL; + } + + 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) { + mutex_unlock(&local->sta_mtx); + return -EINVAL; + } + + if (params->vlan->ieee80211_ptr->use_4addr) { + if (vlansdata->u.vlan.sta) { + mutex_unlock(&local->sta_mtx); + return -EBUSY; + } + + rcu_assign_pointer(vlansdata->u.vlan.sta, sta); + } + + sta->sdata = vlansdata; + ieee80211_send_layer2_update(sta); + } + + err = sta_apply_parameters(local, sta, params); + if (err) { + mutex_unlock(&local->sta_mtx); + return err; + } + + if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && params->supported_rates) + rate_control_rate_init(sta); + + mutex_unlock(&local->sta_mtx); + + if (sdata->vif.type == NL80211_IFTYPE_STATION && + params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) + ieee80211_recalc_ps(local, -1); + + 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_by_iface(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) +{ + struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop); + + if (next_hop_sta) + memcpy(next_hop, next_hop_sta->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; + struct ieee80211_sub_if_data *sdata = container_of(ifmsh, + struct ieee80211_sub_if_data, u.mesh); + + /* allocate information elements */ + new_ie = NULL; + old_ie = ifmsh->ie; + + if (setup->ie_len) { + new_ie = kmemdup(setup->ie, setup->ie_len, + GFP_KERNEL); + if (!new_ie) + return -ENOMEM; + } + ifmsh->ie_len = setup->ie_len; + ifmsh->ie = new_ie; + kfree(old_ie); + + /* 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->security = IEEE80211_MESH_SEC_NONE; + if (setup->is_authenticated) + ifmsh->security |= IEEE80211_MESH_SEC_AUTHED; + if (setup->is_secure) + ifmsh->security |= IEEE80211_MESH_SEC_SECURED; + + /* mcast rate setting in Mesh Node */ + memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate, + sizeof(setup->mcast_rate)); + + 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_PERR_MIN_INTERVAL, mask)) + conf->dot11MeshHWMPperrMinInterval = + nconf->dot11MeshHWMPperrMinInterval; + 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); + } + if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) { + /* our current gate announcement implementation rides on root + * announcements, so require this ifmsh to also be a root node + * */ + if (nconf->dot11MeshGateAnnouncementProtocol && + !conf->dot11MeshHWMPRootMode) { + conf->dot11MeshHWMPRootMode = 1; + ieee80211_mesh_root_setup(ifmsh); + } + conf->dot11MeshGateAnnouncementProtocol = + nconf->dot11MeshGateAnnouncementProtocol; + } + if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask)) { + conf->dot11MeshHWMPRannInterval = + nconf->dot11MeshHWMPRannInterval; + } + if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask)) + conf->dot11MeshForwarding = nconf->dot11MeshForwarding; + if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) { + /* our RSSI threshold implementation is supported only for + * devices that report signal in dBm. + */ + if (!(sdata->local->hw.flags & IEEE80211_HW_SIGNAL_DBM)) + return -ENOTSUPP; + conf->rssi_threshold = nconf->rssi_threshold; + } + 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 net_device *dev, + struct ieee80211_txq_params *params) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + 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 (params->queue >= local->hw.queues) + return -EINVAL; + + sdata->tx_conf[params->queue] = p; + if (drv_conf_tx(local, sdata, 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; + struct ieee80211_channel *old_oper; + enum nl80211_channel_type old_oper_type; + enum nl80211_channel_type old_vif_oper_type= NL80211_CHAN_NO_HT; + + 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; + } + + if (sdata) + old_vif_oper_type = sdata->vif.bss_conf.channel_type; + old_oper_type = local->_oper_channel_type; + + if (!ieee80211_set_channel_type(local, sdata, channel_type)) + return -EBUSY; + + old_oper = local->oper_channel; + local->oper_channel = chan; + + /* Update driver if changes were actually made. */ + if ((old_oper != local->oper_channel) || + (old_oper_type != local->_oper_channel_type)) + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL); + + if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR && + old_vif_oper_type != sdata->vif.bss_conf.channel_type) + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); + + return 0; +} + +#ifdef CONFIG_PM +static int ieee80211_suspend(struct wiphy *wiphy, + struct cfg80211_wowlan *wowlan) +{ + return __ieee80211_suspend(wiphy_priv(wiphy), wowlan); +} + +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; + //add by dulong + printk("use soft_scan when scan_type is NL80211_IFTYPE_P2P_GO\n"); + break; + /* + * FIXME: implement NoA while scanning in software, + * for now fall through to allow scanning only when + * beaconing hasn't been configured yet + */ + case NL80211_IFTYPE_AP: + if (sdata->u.ap.beacon) + return -EOPNOTSUPP; + break; + default: + return -EOPNOTSUPP; + } + + return ieee80211_request_scan(sdata, req); +} + +static int +ieee80211_sched_scan_start(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_sched_scan_request *req) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (!sdata->local->ops->sched_scan_start) + return -EOPNOTSUPP; + + return ieee80211_request_sched_scan_start(sdata, req); +} + +static int +ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (!sdata->local->ops->sched_scan_stop) + return -EOPNOTSUPP; + + return ieee80211_request_sched_scan_stop(sdata); +} + +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) +{ + return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req); +} + +static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_disassoc_request *req) +{ + return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req); +} + +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); +} + +static int ieee80211_testmode_dump(struct wiphy *wiphy, + struct sk_buff *skb, + struct netlink_callback *cb, + void *data, int len) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + if (!local->ops->testmode_dump) + return -EOPNOTSUPP; + + return local->ops->testmode_dump(&local->hw, skb, cb, 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; + + lockdep_assert_held(&sdata->u.mgd.mtx); + + 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_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; + + /* tell the driver upon association, unless already associated */ + if (sdata->u.mgd.associated && + sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) + 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, ret; + + if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) { + ret = drv_set_bitrate_mask(local, sdata, mask); + if (ret) + return ret; + } + + for (i = 0; i < IEEE80211_NUM_BANDS; i++) { + sdata->rc_rateidx_mask[i] = mask->control[i].legacy; + memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs, + sizeof(mask->control[i].mcs)); + } + + 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.status) + cfg80211_mgmt_tx_status(wk->sdata->dev, + (unsigned long) wk->offchan_tx.frame, + wk->data, wk->data_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, bool no_cck, + bool dont_wait_for_ack, 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; + bool is_offchan = false; + + if (dont_wait_for_ack) + flags = IEEE80211_TX_CTL_NO_ACK; + else + flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | + IEEE80211_TX_CTL_REQ_TX_STATUS; + + /* 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 (no_cck) + flags |= IEEE80211_TX_CTL_NO_CCK_RATE; + + 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->chan_type = channel_type; + wk->sdata = sdata; + wk->done = ieee80211_offchan_tx_done; + wk->offchan_tx.frame = skb; + wk->offchan_tx.wait = wait; + wk->data_len = len; + memcpy(wk->data, 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); +} + +static int ieee80211_set_ringparam(struct wiphy *wiphy, u32 tx, u32 rx) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + return drv_set_ringparam(local, tx, rx); +} + +static void ieee80211_get_ringparam(struct wiphy *wiphy, + u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + drv_get_ringparam(local, tx, tx_max, rx, rx_max); +} + +static int ieee80211_set_rekey_data(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_gtk_rekey_data *data) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (!local->ops->set_rekey_data) + return -EOPNOTSUPP; + + drv_set_rekey_data(local, sdata, data); + + return 0; +} + +static void ieee80211_tdls_add_ext_capab(struct sk_buff *skb) +{ + u8 *pos = (void *)skb_put(skb, 7); + + *pos++ = WLAN_EID_EXT_CAPABILITY; + *pos++ = 5; /* len */ + *pos++ = 0x0; + *pos++ = 0x0; + *pos++ = 0x0; + *pos++ = 0x0; + *pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED; +} + +static u16 ieee80211_get_tdls_sta_capab(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + u16 capab; + + capab = 0; + if (local->oper_channel->band != IEEE80211_BAND_2GHZ) + return capab; + + if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) + capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME; + if (!(local->hw.flags & IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE)) + capab |= WLAN_CAPABILITY_SHORT_PREAMBLE; + + return capab; +} + +static void ieee80211_tdls_add_link_ie(struct sk_buff *skb, u8 *src_addr, + u8 *peer, u8 *bssid) +{ + struct ieee80211_tdls_lnkie *lnkid; + + lnkid = (void *)skb_put(skb, sizeof(struct ieee80211_tdls_lnkie)); + + lnkid->ie_type = WLAN_EID_LINK_ID; + lnkid->ie_len = sizeof(struct ieee80211_tdls_lnkie) - 2; + + memcpy(lnkid->bssid, bssid, ETH_ALEN); + memcpy(lnkid->init_sta, src_addr, ETH_ALEN); + memcpy(lnkid->resp_sta, peer, ETH_ALEN); +} + +static int +ieee80211_prep_tdls_encap_data(struct wiphy *wiphy, struct net_device *dev, + u8 *peer, u8 action_code, u8 dialog_token, + u16 status_code, struct sk_buff *skb) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_tdls_data *tf; + + tf = (void *)skb_put(skb, offsetof(struct ieee80211_tdls_data, u)); + + memcpy(tf->da, peer, ETH_ALEN); + memcpy(tf->sa, sdata->vif.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(ieee80211_get_tdls_sta_capab(sdata)); + + ieee80211_add_srates_ie(&sdata->vif, skb); + ieee80211_add_ext_srates_ie(&sdata->vif, skb); + ieee80211_tdls_add_ext_capab(skb); + 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(ieee80211_get_tdls_sta_capab(sdata)); + + ieee80211_add_srates_ie(&sdata->vif, skb); + ieee80211_add_ext_srates_ie(&sdata->vif, skb); + ieee80211_tdls_add_ext_capab(skb); + 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; + 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: + return -EINVAL; + } + + return 0; +} + +static int +ieee80211_prep_tdls_direct(struct wiphy *wiphy, struct net_device *dev, + u8 *peer, u8 action_code, u8 dialog_token, + u16 status_code, struct sk_buff *skb) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_mgmt *mgmt; + + mgmt = (void *)skb_put(skb, 24); + memset(mgmt, 0, 24); + memcpy(mgmt->da, peer, ETH_ALEN); + memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); + memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); + + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_ACTION); + + switch (action_code) { + case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: + skb_put(skb, 1 + sizeof(mgmt->u.action.u.tdls_discover_resp)); + 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(ieee80211_get_tdls_sta_capab(sdata)); + + ieee80211_add_srates_ie(&sdata->vif, skb); + ieee80211_add_ext_srates_ie(&sdata->vif, skb); + ieee80211_tdls_add_ext_capab(skb); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int ieee80211_tdls_mgmt(struct wiphy *wiphy, struct net_device *dev, + u8 *peer, u8 action_code, u8 dialog_token, + u16 status_code, const u8 *extra_ies, + size_t extra_ies_len) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee80211_tx_info *info; + struct sk_buff *skb = NULL; + bool send_direct; + int ret; + + if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) + return -ENOTSUPP; + + /* make sure we are in managed mode, and associated */ + if (sdata->vif.type != NL80211_IFTYPE_STATION || + !sdata->u.mgd.associated) + return -EINVAL; + +#ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG + printk(KERN_DEBUG "TDLS mgmt action %d peer %pM\n", action_code, peer); +#endif + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + max(sizeof(struct ieee80211_mgmt), + sizeof(struct ieee80211_tdls_data)) + + 50 + /* supported rates */ + 7 + /* ext capab */ + extra_ies_len + + sizeof(struct ieee80211_tdls_lnkie)); + if (!skb) + return -ENOMEM; + + info = IEEE80211_SKB_CB(skb); + skb_reserve(skb, local->hw.extra_tx_headroom); + + switch (action_code) { + case WLAN_TDLS_SETUP_REQUEST: + case WLAN_TDLS_SETUP_RESPONSE: + case WLAN_TDLS_SETUP_CONFIRM: + case WLAN_TDLS_TEARDOWN: + case WLAN_TDLS_DISCOVERY_REQUEST: + ret = ieee80211_prep_tdls_encap_data(wiphy, dev, peer, + action_code, dialog_token, + status_code, skb); + send_direct = false; + break; + case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: + ret = ieee80211_prep_tdls_direct(wiphy, dev, peer, action_code, + dialog_token, status_code, + skb); + send_direct = true; + break; + default: + ret = -ENOTSUPP; + break; + } + + if (ret < 0) + goto fail; + + if (extra_ies_len) + memcpy(skb_put(skb, extra_ies_len), extra_ies, extra_ies_len); + + /* the TDLS link IE is always added last */ + switch (action_code) { + case WLAN_TDLS_SETUP_REQUEST: + case WLAN_TDLS_SETUP_CONFIRM: + case WLAN_TDLS_TEARDOWN: + case WLAN_TDLS_DISCOVERY_REQUEST: + /* we are the initiator */ + ieee80211_tdls_add_link_ie(skb, sdata->vif.addr, peer, + sdata->u.mgd.bssid); + break; + case WLAN_TDLS_SETUP_RESPONSE: + case WLAN_PUB_ACTION_TDLS_DISCOVER_RES: + /* we are the responder */ + ieee80211_tdls_add_link_ie(skb, peer, sdata->vif.addr, + sdata->u.mgd.bssid); + break; + default: + ret = -ENOTSUPP; + goto fail; + } + + if (send_direct) { + ieee80211_tx_skb(sdata, skb); + return 0; + } + + /* + * According to 802.11z: Setup req/resp are sent in AC_BK, otherwise + * we should default to AC_VI. + */ + switch (action_code) { + case WLAN_TDLS_SETUP_REQUEST: + case WLAN_TDLS_SETUP_RESPONSE: + skb_set_queue_mapping(skb, IEEE80211_AC_BK); + skb->priority = 2; + break; + default: + skb_set_queue_mapping(skb, IEEE80211_AC_VI); + skb->priority = 5; + break; + } + + /* disable bottom halves when entering the Tx path */ + local_bh_disable(); + ret = ieee80211_subif_start_xmit(skb, dev); + local_bh_enable(); + + return ret; + +fail: + dev_kfree_skb(skb); + return ret; +} + +static int ieee80211_tdls_oper(struct wiphy *wiphy, struct net_device *dev, + u8 *peer, enum nl80211_tdls_operation oper) +{ + struct sta_info *sta; + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (!(wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)) + return -ENOTSUPP; + + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EINVAL; + +#ifdef CONFIG_MAC80211_VERBOSE_TDLS_DEBUG + printk(KERN_DEBUG "TDLS oper %d peer %pM\n", oper, peer); +#endif + + switch (oper) { + case NL80211_TDLS_ENABLE_LINK: + rcu_read_lock(); + sta = sta_info_get(sdata, peer); + if (!sta) { + rcu_read_unlock(); + return -ENOLINK; + } + + set_sta_flag(sta, WLAN_STA_TDLS_PEER_AUTH); + rcu_read_unlock(); + break; + case NL80211_TDLS_DISABLE_LINK: + return sta_info_destroy_addr(sdata, peer); + case NL80211_TDLS_TEARDOWN: + case NL80211_TDLS_SETUP: + case NL80211_TDLS_DISCOVERY_REQ: + /* We don't support in-driver setup/teardown/discovery */ + return -ENOTSUPP; + default: + return -ENOTSUPP; + } + + return 0; +} + +static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev, + const u8 *peer, u64 *cookie) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee80211_qos_hdr *nullfunc; + struct sk_buff *skb; + int size = sizeof(*nullfunc); + __le16 fc; + bool qos; + struct ieee80211_tx_info *info; + struct sta_info *sta; + + rcu_read_lock(); + sta = sta_info_get(sdata, peer); + if (sta) { + qos = test_sta_flag(sta, WLAN_STA_WME); + rcu_read_unlock(); + } else { + rcu_read_unlock(); + return -ENOLINK; + } + + if (qos) { + fc = cpu_to_le16(IEEE80211_FTYPE_DATA | + IEEE80211_STYPE_QOS_NULLFUNC | + IEEE80211_FCTL_FROMDS); + } else { + size -= 2; + fc = cpu_to_le16(IEEE80211_FTYPE_DATA | + IEEE80211_STYPE_NULLFUNC | + IEEE80211_FCTL_FROMDS); + } + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + size); + if (!skb) + return -ENOMEM; + + skb->dev = dev; + + skb_reserve(skb, local->hw.extra_tx_headroom); + + nullfunc = (void *) skb_put(skb, size); + nullfunc->frame_control = fc; + nullfunc->duration_id = 0; + memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN); + memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); + memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN); + nullfunc->seq_ctrl = 0; + + info = IEEE80211_SKB_CB(skb); + + info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS | + IEEE80211_TX_INTFL_NL80211_FRAME_TX; + + skb_set_queue_mapping(skb, IEEE80211_AC_VO); + skb->priority = 7; + if (qos) + nullfunc->qos_ctrl = cpu_to_le16(7); + + local_bh_disable(); + ieee80211_xmit(sdata, skb); + local_bh_enable(); + + *cookie = (unsigned long) skb; + return 0; +} + +static struct ieee80211_channel * +ieee80211_wiphy_get_channel(struct wiphy *wiphy) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + return local->oper_channel; +} + +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, + .start_ap = ieee80211_start_ap, + .change_beacon = ieee80211_change_beacon, + .stop_ap = ieee80211_stop_ap, + .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, + .sched_scan_start = ieee80211_sched_scan_start, + .sched_scan_stop = ieee80211_sched_scan_stop, + .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) + CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump) + .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, + .set_ringparam = ieee80211_set_ringparam, + .get_ringparam = ieee80211_get_ringparam, + .set_rekey_data = ieee80211_set_rekey_data, + .tdls_oper = ieee80211_tdls_oper, + .tdls_mgmt = ieee80211_tdls_mgmt, + .probe_client = ieee80211_probe_client, + .get_channel = ieee80211_wiphy_get_channel, + .set_noack_map = ieee80211_set_noack_map, +}; 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