diff options
Diffstat (limited to 'net/mac80211/cfg.c')
| -rw-r--r-- | net/mac80211/cfg.c | 3782 |
1 files changed, 3782 insertions, 0 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c new file mode 100644 index 000000000..f06d42267 --- /dev/null +++ b/net/mac80211/cfg.c @@ -0,0 +1,3782 @@ +/* + * mac80211 configuration hooks for cfg80211 + * + * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> + * Copyright 2013-2014 Intel Mobile Communications GmbH + * + * 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" +#include "wme.h" + +static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, + const char *name, + unsigned char name_assign_type, + enum nl80211_iftype type, + u32 *flags, + struct vif_params *params) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct wireless_dev *wdev; + struct ieee80211_sub_if_data *sdata; + int err; + + err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params); + if (err) + return ERR_PTR(err); + + if (type == NL80211_IFTYPE_MONITOR && flags) { + sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + sdata->u.mntr_flags = *flags; + } + + return wdev; +} + +static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) +{ + ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev)); + + 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)) { + u32 mask = MONITOR_FLAG_COOK_FRAMES | + MONITOR_FLAG_ACTIVE; + + /* + * Prohibit MONITOR_FLAG_COOK_FRAMES and + * MONITOR_FLAG_ACTIVE 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 & mask) != (sdata->u.mntr_flags & mask)) + 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_start_p2p_device(struct wiphy *wiphy, + struct wireless_dev *wdev) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + int ret; + + mutex_lock(&sdata->local->chanctx_mtx); + ret = ieee80211_check_combinations(sdata, NULL, 0, 0); + mutex_unlock(&sdata->local->chanctx_mtx); + if (ret < 0) + return ret; + + return ieee80211_do_open(wdev, true); +} + +static void ieee80211_stop_p2p_device(struct wiphy *wiphy, + struct wireless_dev *wdev) +{ + ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev)); +} + +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 ieee80211_local *local = sdata->local; + struct sta_info *sta = NULL; + const struct ieee80211_cipher_scheme *cs = 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(local->wep_tx_tfm)) + return -EINVAL; + break; + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_CCMP_256: + case WLAN_CIPHER_SUITE_AES_CMAC: + case WLAN_CIPHER_SUITE_BIP_CMAC_256: + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + break; + default: + cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type); + break; + } + + key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len, + params->key, params->seq_len, params->seq, + cs); + if (IS_ERR(key)) + return PTR_ERR(key); + + if (pairwise) + key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE; + + mutex_lock(&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); + /* + * The ASSOC test makes sure the driver is ready to + * receive the key. When wpa_supplicant has roamed + * using FT, it attempts to set the key before + * association has completed, this rejects that attempt + * so it will set the key again after association. + * + * TODO: accept the key if we have a station entry and + * add it to the device after the station. + */ + if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) { + ieee80211_key_free_unused(key); + err = -ENOENT; + goto out_unlock; + } + } + + switch (sdata->vif.type) { + case NL80211_IFTYPE_STATION: + if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED) + key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; + break; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + /* Keys without a station are used for TX only */ + if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP)) + key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; + break; + case NL80211_IFTYPE_ADHOC: + /* no MFP (yet) */ + break; + case NL80211_IFTYPE_MESH_POINT: +#ifdef CONFIG_MAC80211_MESH + if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) + key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT; + break; +#endif + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_P2P_DEVICE: + case NL80211_IFTYPE_UNSPECIFIED: + case NUM_NL80211_IFTYPES: + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: + case NL80211_IFTYPE_OCB: + /* shouldn't happen */ + WARN_ON_ONCE(1); + break; + } + + if (sta) + sta->cipher_scheme = cs; + + err = ieee80211_key_link(key, sdata, sta); + + out_unlock: + mutex_unlock(&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[key_idx]); + 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, true); + + 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_idx < NUM_DEFAULT_KEYS) + key = rcu_dereference(sta->ptk[key_idx]); + else if (!pairwise && + key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_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: + case WLAN_CIPHER_SUITE_CCMP_256: + 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: + case WLAN_CIPHER_SUITE_BIP_CMAC_256: + 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; + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + pn64 = atomic64_read(&key->u.aes_gmac.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_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + pn64 = atomic64_read(&key->u.gcmp.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; +} + +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; + rinfo->mcs = rate->idx; + } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) { + rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; + rinfo->mcs = ieee80211_rate_get_vht_mcs(rate); + rinfo->nss = ieee80211_rate_get_vht_nss(rate); + } else { + struct ieee80211_supported_band *sband; + int shift = ieee80211_vif_get_shift(&sta->sdata->vif); + u16 brate; + + sband = sta->local->hw.wiphy->bands[ + ieee80211_get_sdata_band(sta->sdata)]; + brate = sband->bitrates[rate->idx].bitrate; + rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); + } + if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) + rinfo->bw = RATE_INFO_BW_40; + else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH) + rinfo->bw = RATE_INFO_BW_80; + else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH) + rinfo->bw = RATE_INFO_BW_160; + else + rinfo->bw = RATE_INFO_BW_20; + if (rate->flags & IEEE80211_TX_RC_SHORT_GI) + rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; +} + +void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo) +{ + rinfo->flags = 0; + + if (sta->last_rx_rate_flag & RX_FLAG_HT) { + rinfo->flags |= RATE_INFO_FLAGS_MCS; + rinfo->mcs = sta->last_rx_rate_idx; + } else if (sta->last_rx_rate_flag & RX_FLAG_VHT) { + rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS; + rinfo->nss = sta->last_rx_rate_vht_nss; + rinfo->mcs = sta->last_rx_rate_idx; + } else { + struct ieee80211_supported_band *sband; + int shift = ieee80211_vif_get_shift(&sta->sdata->vif); + u16 brate; + + sband = sta->local->hw.wiphy->bands[ + ieee80211_get_sdata_band(sta->sdata)]; + brate = sband->bitrates[sta->last_rx_rate_idx].bitrate; + rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift); + } + + if (sta->last_rx_rate_flag & RX_FLAG_SHORT_GI) + rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI; + + if (sta->last_rx_rate_flag & RX_FLAG_5MHZ) + rinfo->bw = RATE_INFO_BW_5; + else if (sta->last_rx_rate_flag & RX_FLAG_10MHZ) + rinfo->bw = RATE_INFO_BW_10; + else if (sta->last_rx_rate_flag & RX_FLAG_40MHZ) + rinfo->bw = RATE_INFO_BW_40; + else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_80MHZ) + rinfo->bw = RATE_INFO_BW_80; + else if (sta->last_rx_rate_vht_flag & RX_VHT_FLAG_160MHZ) + rinfo->bw = RATE_INFO_BW_160; + else + rinfo->bw = RATE_INFO_BW_20; +} + +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 ieee80211_local *local = sdata->local; + struct sta_info *sta; + int ret = -ENOENT; + + mutex_lock(&local->sta_mtx); + + sta = sta_info_get_by_idx(sdata, idx); + if (sta) { + ret = 0; + memcpy(mac, sta->sta.addr, ETH_ALEN); + sta_set_sinfo(sta, sinfo); + } + + mutex_unlock(&local->sta_mtx); + + 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, + const u8 *mac, struct station_info *sinfo) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + int ret = -ENOENT; + + mutex_lock(&local->sta_mtx); + + sta = sta_info_get_bss(sdata, mac); + if (sta) { + ret = 0; + sta_set_sinfo(sta, sinfo); + } + + mutex_unlock(&local->sta_mtx); + + return ret; +} + +static int ieee80211_set_monitor_channel(struct wiphy *wiphy, + struct cfg80211_chan_def *chandef) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata; + int ret = 0; + + if (cfg80211_chandef_identical(&local->monitor_chandef, chandef)) + return 0; + + mutex_lock(&local->mtx); + mutex_lock(&local->iflist_mtx); + if (local->use_chanctx) { + sdata = rcu_dereference_protected( + local->monitor_sdata, + lockdep_is_held(&local->iflist_mtx)); + if (sdata) { + ieee80211_vif_release_channel(sdata); + ret = ieee80211_vif_use_channel(sdata, chandef, + IEEE80211_CHANCTX_EXCLUSIVE); + } + } else if (local->open_count == local->monitors) { + local->_oper_chandef = *chandef; + ieee80211_hw_config(local, 0); + } + + if (ret == 0) + local->monitor_chandef = *chandef; + mutex_unlock(&local->iflist_mtx); + mutex_unlock(&local->mtx); + + return ret; +} + +static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata, + const u8 *resp, size_t resp_len, + const struct ieee80211_csa_settings *csa) +{ + struct probe_resp *new, *old; + + if (!resp || !resp_len) + return 1; + + old = sdata_dereference(sdata->u.ap.probe_resp, sdata); + + new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL); + if (!new) + return -ENOMEM; + + new->len = resp_len; + memcpy(new->data, resp, resp_len); + + if (csa) + memcpy(new->csa_counter_offsets, csa->counter_offsets_presp, + csa->n_counter_offsets_presp * + sizeof(new->csa_counter_offsets[0])); + + rcu_assign_pointer(sdata->u.ap.probe_resp, new); + if (old) + kfree_rcu(old, rcu_head); + + return 0; +} + +static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata, + struct cfg80211_beacon_data *params, + const struct ieee80211_csa_settings *csa) +{ + struct beacon_data *new, *old; + int new_head_len, new_tail_len; + int size, err; + u32 changed = BSS_CHANGED_BEACON; + + old = sdata_dereference(sdata->u.ap.beacon, sdata); + + + /* 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; + + if (csa) { + new->csa_current_counter = csa->count; + memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon, + csa->n_counter_offsets_beacon * + sizeof(new->csa_counter_offsets[0])); + } + + /* 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, csa); + 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 ieee80211_local *local = sdata->local; + 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 | + BSS_CHANGED_P2P_PS | + BSS_CHANGED_TXPOWER; + int err; + + old = sdata_dereference(sdata->u.ap.beacon, sdata); + if (old) + return -EALREADY; + + switch (params->smps_mode) { + case NL80211_SMPS_OFF: + sdata->smps_mode = IEEE80211_SMPS_OFF; + break; + case NL80211_SMPS_STATIC: + sdata->smps_mode = IEEE80211_SMPS_STATIC; + break; + case NL80211_SMPS_DYNAMIC: + sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; + break; + default: + return -EINVAL; + } + sdata->needed_rx_chains = sdata->local->rx_chains; + + mutex_lock(&local->mtx); + err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, + IEEE80211_CHANCTX_SHARED); + if (!err) + ieee80211_vif_copy_chanctx_to_vlans(sdata, false); + mutex_unlock(&local->mtx); + if (err) + return err; + + /* + * 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; + sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local, + ¶ms->crypto, + sdata->vif.type); + + 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; + vlan->encrypt_headroom = + ieee80211_cs_headroom(sdata->local, + ¶ms->crypto, + vlan->vif.type); + } + + sdata->vif.bss_conf.beacon_int = params->beacon_interval; + sdata->vif.bss_conf.dtim_period = params->dtim_period; + sdata->vif.bss_conf.enable_beacon = true; + + 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); + + memset(&sdata->vif.bss_conf.p2p_noa_attr, 0, + sizeof(sdata->vif.bss_conf.p2p_noa_attr)); + sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow = + params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; + if (params->p2p_opp_ps) + sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= + IEEE80211_P2P_OPPPS_ENABLE_BIT; + + err = ieee80211_assign_beacon(sdata, ¶ms->beacon, NULL); + if (err < 0) { + ieee80211_vif_release_channel(sdata); + return err; + } + changed |= err; + + err = drv_start_ap(sdata->local, sdata); + if (err) { + old = sdata_dereference(sdata->u.ap.beacon, sdata); + + if (old) + kfree_rcu(old, rcu_head); + RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); + ieee80211_vif_release_channel(sdata); + return err; + } + + ieee80211_recalc_dtim(local, sdata); + ieee80211_bss_info_change_notify(sdata, changed); + + netif_carrier_on(dev); + list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) + netif_carrier_on(vlan->dev); + + 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); + sdata_assert_lock(sdata); + + /* don't allow changing the beacon while CSA is in place - offset + * of channel switch counter may change + */ + if (sdata->vif.csa_active) + return -EBUSY; + + old = sdata_dereference(sdata->u.ap.beacon, sdata); + if (!old) + return -ENOENT; + + err = ieee80211_assign_beacon(sdata, params, NULL); + 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 = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_sub_if_data *vlan; + struct ieee80211_local *local = sdata->local; + struct beacon_data *old_beacon; + struct probe_resp *old_probe_resp; + struct cfg80211_chan_def chandef; + + sdata_assert_lock(sdata); + + old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata); + if (!old_beacon) + return -ENOENT; + old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata); + + /* abort any running channel switch */ + mutex_lock(&local->mtx); + sdata->vif.csa_active = false; + if (sdata->csa_block_tx) { + ieee80211_wake_vif_queues(local, sdata, + IEEE80211_QUEUE_STOP_REASON_CSA); + sdata->csa_block_tx = false; + } + + mutex_unlock(&local->mtx); + + kfree(sdata->u.ap.next_beacon); + sdata->u.ap.next_beacon = NULL; + + /* turn off carrier for this interface and dependent VLANs */ + list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) + netif_carrier_off(vlan->dev); + netif_carrier_off(dev); + + /* remove beacon and probe response */ + RCU_INIT_POINTER(sdata->u.ap.beacon, NULL); + RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL); + kfree_rcu(old_beacon, rcu_head); + if (old_probe_resp) + kfree_rcu(old_probe_resp, rcu_head); + sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF; + + __sta_info_flush(sdata, true); + ieee80211_free_keys(sdata, true); + + sdata->vif.bss_conf.enable_beacon = false; + sdata->vif.bss_conf.ssid_len = 0; + clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state); + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED); + + if (sdata->wdev.cac_started) { + chandef = sdata->vif.bss_conf.chandef; + cancel_delayed_work_sync(&sdata->dfs_cac_timer_work); + cfg80211_cac_event(sdata->dev, &chandef, + NL80211_RADAR_CAC_ABORTED, + GFP_KERNEL); + } + + drv_stop_ap(sdata->local, sdata); + + /* free all potentially still buffered bcast frames */ + local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); + skb_queue_purge(&sdata->u.ap.ps.bc_buf); + + mutex_lock(&local->mtx); + ieee80211_vif_copy_chanctx_to_vlans(sdata, true); + ieee80211_vif_release_channel(sdata); + mutex_unlock(&local->mtx); + + 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 */ + + eth_broadcast_addr(msg->da); + 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_auth_flags(struct ieee80211_local *local, + struct sta_info *sta, + u32 mask, u32 set) +{ + int ret; + + if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && + 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; + } + + if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && + set & BIT(NL80211_STA_FLAG_ASSOCIATED) && + !test_sta_flag(sta, WLAN_STA_ASSOC)) { + /* + * When peer becomes associated, init rate control as + * well. Some drivers require rate control initialized + * before drv_sta_state() is called. + */ + if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) + rate_control_rate_init(sta); + + 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); + else + ret = 0; + if (ret) + return ret; + } + + if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) && + !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) && + test_sta_flag(sta, WLAN_STA_ASSOC)) { + ret = sta_info_move_state(sta, IEEE80211_STA_AUTH); + if (ret) + return ret; + } + + if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) && + !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) && + test_sta_flag(sta, WLAN_STA_AUTH)) { + ret = sta_info_move_state(sta, IEEE80211_STA_NONE); + if (ret) + return ret; + } + + return 0; +} + +static int sta_apply_parameters(struct ieee80211_local *local, + struct sta_info *sta, + struct station_parameters *params) +{ + int ret = 0; + struct ieee80211_supported_band *sband; + struct ieee80211_sub_if_data *sdata = sta->sdata; + enum ieee80211_band band = ieee80211_get_sdata_band(sdata); + u32 mask, set; + + sband = local->hw.wiphy->bands[band]; + + mask = params->sta_flags_mask; + set = params->sta_flags_set; + + if (ieee80211_vif_is_mesh(&sdata->vif)) { + /* + * In mesh mode, ASSOCIATED isn't part of the nl80211 + * API but must follow AUTHENTICATED for driver state. + */ + if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED)) + mask |= BIT(NL80211_STA_FLAG_ASSOCIATED); + if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) + set |= BIT(NL80211_STA_FLAG_ASSOCIATED); + } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + /* + * TDLS -- everything follows authorized, but + * only becoming authorized is possible, not + * going back + */ + if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) { + set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | + BIT(NL80211_STA_FLAG_ASSOCIATED); + mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) | + BIT(NL80211_STA_FLAG_ASSOCIATED); + } + } + + if (mask & BIT(NL80211_STA_FLAG_WME) && + local->hw.queues >= IEEE80211_NUM_ACS) + sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME); + + /* auth flags will be set later for TDLS stations */ + if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + ret = sta_apply_auth_flags(local, sta, mask, set); + 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_MFP)) { + sta->sta.mfp = !!(set & 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); + } + + /* mark TDLS channel switch support, if the AP allows it */ + if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) && + !sdata->u.mgd.tdls_chan_switch_prohibited && + params->ext_capab_len >= 4 && + params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH) + set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH); + + 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; + + /* + * Some of the following updates would be racy if called on an + * existing station, via ieee80211_change_station(). However, + * all such changes are rejected by cfg80211 except for updates + * changing the supported rates on an existing but not yet used + * TDLS peer. + */ + + if (params->listen_interval >= 0) + sta->listen_interval = params->listen_interval; + + if (params->supported_rates) { + ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, + sband, params->supported_rates, + params->supported_rates_len, + &sta->sta.supp_rates[band]); + } + + if (params->ht_capa) + ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, + params->ht_capa, sta); + + if (params->vht_capa) + ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband, + params->vht_capa, sta); + + if (params->opmode_notif_used) { + /* returned value is only needed for rc update, but the + * rc isn't initialized here yet, so ignore it + */ + __ieee80211_vht_handle_opmode(sdata, sta, + params->opmode_notif, + band, false); + } + + if (ieee80211_vif_is_mesh(&sdata->vif)) { +#ifdef CONFIG_MAC80211_MESH + u32 changed = 0; + + if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) { + switch (params->plink_state) { + case NL80211_PLINK_ESTAB: + if (sta->plink_state != NL80211_PLINK_ESTAB) + changed = mesh_plink_inc_estab_count( + sdata); + sta->plink_state = params->plink_state; + + ieee80211_mps_sta_status_update(sta); + changed |= ieee80211_mps_set_sta_local_pm(sta, + sdata->u.mesh.mshcfg.power_mode); + break; + case NL80211_PLINK_LISTEN: + case NL80211_PLINK_BLOCKED: + case NL80211_PLINK_OPN_SNT: + case NL80211_PLINK_OPN_RCVD: + case NL80211_PLINK_CNF_RCVD: + case NL80211_PLINK_HOLDING: + if (sta->plink_state == NL80211_PLINK_ESTAB) + changed = mesh_plink_dec_estab_count( + sdata); + sta->plink_state = params->plink_state; + + ieee80211_mps_sta_status_update(sta); + changed |= ieee80211_mps_set_sta_local_pm(sta, + NL80211_MESH_POWER_UNKNOWN); + break; + default: + /* nothing */ + break; + } + } + + switch (params->plink_action) { + case NL80211_PLINK_ACTION_NO_ACTION: + /* nothing */ + break; + case NL80211_PLINK_ACTION_OPEN: + changed |= mesh_plink_open(sta); + break; + case NL80211_PLINK_ACTION_BLOCK: + changed |= mesh_plink_block(sta); + break; + } + + if (params->local_pm) + changed |= + ieee80211_mps_set_sta_local_pm(sta, + params->local_pm); + ieee80211_mbss_info_change_notify(sdata, changed); +#endif + } + + /* set the STA state after all sta info from usermode has been set */ + if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + ret = sta_apply_auth_flags(local, sta, mask, set); + if (ret) + return ret; + } + + return 0; +} + +static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev, + const 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 (ether_addr_equal(mac, sdata->vif.addr)) + return -EINVAL; + + if (is_multicast_ether_addr(mac)) + return -EINVAL; + + sta = sta_info_alloc(sdata, mac, GFP_KERNEL); + if (!sta) + return -ENOMEM; + + /* + * defaults -- if userspace wants something else we'll + * change it accordingly in sta_apply_parameters() + */ + if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) { + sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); + sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); + } else { + sta->sta.tdls = true; + } + + 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 + * rates are known and station is marked authorized + */ + 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, + struct station_del_parameters *params) +{ + struct ieee80211_sub_if_data *sdata; + + sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (params->mac) + return sta_info_destroy_addr_bss(sdata, params->mac); + + sta_info_flush(sdata); + return 0; +} + +static int ieee80211_change_station(struct wiphy *wiphy, + struct net_device *dev, const 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; + enum cfg80211_station_type statype; + int err; + + mutex_lock(&local->sta_mtx); + + sta = sta_info_get_bss(sdata, mac); + if (!sta) { + err = -ENOENT; + goto out_err; + } + + switch (sdata->vif.type) { + case NL80211_IFTYPE_MESH_POINT: + if (sdata->u.mesh.user_mpm) + statype = CFG80211_STA_MESH_PEER_USER; + else + statype = CFG80211_STA_MESH_PEER_KERNEL; + break; + case NL80211_IFTYPE_ADHOC: + statype = CFG80211_STA_IBSS; + break; + case NL80211_IFTYPE_STATION: + if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) { + statype = CFG80211_STA_AP_STA; + break; + } + if (test_sta_flag(sta, WLAN_STA_AUTHORIZED)) + statype = CFG80211_STA_TDLS_PEER_ACTIVE; + else + statype = CFG80211_STA_TDLS_PEER_SETUP; + break; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + statype = CFG80211_STA_AP_CLIENT; + break; + default: + err = -EOPNOTSUPP; + goto out_err; + } + + err = cfg80211_check_station_change(wiphy, params, statype); + if (err) + goto out_err; + + if (params->vlan && params->vlan != sta->sdata->dev) { + bool prev_4addr = false; + bool new_4addr = false; + + vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan); + + if (params->vlan->ieee80211_ptr->use_4addr) { + if (vlansdata->u.vlan.sta) { + err = -EBUSY; + goto out_err; + } + + rcu_assign_pointer(vlansdata->u.vlan.sta, sta); + new_4addr = true; + } + + if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN && + sta->sdata->u.vlan.sta) { + RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL); + prev_4addr = true; + } + + sta->sdata = vlansdata; + + if (sta->sta_state == IEEE80211_STA_AUTHORIZED && + prev_4addr != new_4addr) { + if (new_4addr) + atomic_dec(&sta->sdata->bss->num_mcast_sta); + else + atomic_inc(&sta->sdata->bss->num_mcast_sta); + } + + ieee80211_send_layer2_update(sta); + } + + err = sta_apply_parameters(local, sta, params); + if (err) + goto out_err; + + mutex_unlock(&local->sta_mtx); + + if ((sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) && + sta->known_smps_mode != sta->sdata->bss->req_smps && + test_sta_flag(sta, WLAN_STA_AUTHORIZED) && + sta_info_tx_streams(sta) != 1) { + ht_dbg(sta->sdata, + "%pM just authorized and MIMO capable - update SMPS\n", + sta->sta.addr); + ieee80211_send_smps_action(sta->sdata, + sta->sdata->bss->req_smps, + sta->sta.addr, + sta->sdata->vif.bss_conf.bssid); + } + + if (sdata->vif.type == NL80211_IFTYPE_STATION && + params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) { + ieee80211_recalc_ps(local, -1); + ieee80211_recalc_ps_vif(sdata); + } + + return 0; +out_err: + mutex_unlock(&local->sta_mtx); + return err; +} + +#ifdef CONFIG_MAC80211_MESH +static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev, + const u8 *dst, const 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_add(sdata, dst); + if (IS_ERR(mpath)) { + rcu_read_unlock(); + return PTR_ERR(mpath); + } + + mesh_path_fix_nexthop(mpath, sta); + + rcu_read_unlock(); + return 0; +} + +static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev, + const u8 *dst) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + if (dst) + return mesh_path_del(sdata, dst); + + mesh_path_flush_by_iface(sdata); + return 0; +} + +static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev, + const u8 *dst, const 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(sdata, dst); + 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 + eth_zero_addr(next_hop); + + memset(pinfo, 0, sizeof(*pinfo)); + + 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; + 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_RESOLVED) + pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED; +} + +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(sdata, dst); + 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(sdata, idx); + 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 void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp, + struct mpath_info *pinfo) +{ + memset(pinfo, 0, sizeof(*pinfo)); + memcpy(mpp, mpath->mpp, ETH_ALEN); + + pinfo->generation = mpp_paths_generation; +} + +static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev, + u8 *dst, u8 *mpp, 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 = mpp_path_lookup(sdata, dst); + if (!mpath) { + rcu_read_unlock(); + return -ENOENT; + } + memcpy(dst, mpath->dst, ETH_ALEN); + mpp_set_pinfo(mpath, mpp, pinfo); + rcu_read_unlock(); + return 0; +} + +static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev, + int idx, u8 *dst, u8 *mpp, + 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 = mpp_path_lookup_by_idx(sdata, idx); + if (!mpath) { + rcu_read_unlock(); + return -ENOENT; + } + memcpy(dst, mpath->dst, ETH_ALEN); + mpp_set_pinfo(mpath, mpp, 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_sp_id = setup->sync_method; + ifmsh->mesh_pp_id = setup->path_sel_proto; + ifmsh->mesh_pm_id = setup->path_metric; + ifmsh->user_mpm = setup->user_mpm; + ifmsh->mesh_auth_id = setup->auth_id; + 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)); + sdata->vif.bss_conf.basic_rates = setup->basic_rates; + + sdata->vif.bss_conf.beacon_int = setup->beacon_interval; + sdata->vif.bss_conf.dtim_period = setup->dtim_period; + + 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->element_ttl = nconf->element_ttl; + if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) { + if (ifmsh->user_mpm) + return -EBUSY; + conf->auto_open_plinks = nconf->auto_open_plinks; + } + if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask)) + conf->dot11MeshNbrOffsetMaxNeighbor = + nconf->dot11MeshNbrOffsetMaxNeighbor; + 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 > IEEE80211_ROOTMODE_ROOT)) { + conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN; + 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; + } + if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) { + conf->ht_opmode = nconf->ht_opmode; + sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode; + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT); + } + if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask)) + conf->dot11MeshHWMPactivePathToRootTimeout = + nconf->dot11MeshHWMPactivePathToRootTimeout; + if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask)) + conf->dot11MeshHWMProotInterval = + nconf->dot11MeshHWMProotInterval; + if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask)) + conf->dot11MeshHWMPconfirmationInterval = + nconf->dot11MeshHWMPconfirmationInterval; + if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) { + conf->power_mode = nconf->power_mode; + ieee80211_mps_local_status_update(sdata); + } + if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask)) + conf->dot11MeshAwakeWindowDuration = + nconf->dot11MeshAwakeWindowDuration; + if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask)) + conf->plink_timeout = nconf->plink_timeout; + ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON); + 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; + + /* can mesh use other SMPS modes? */ + sdata->smps_mode = IEEE80211_SMPS_OFF; + sdata->needed_rx_chains = sdata->local->rx_chains; + + mutex_lock(&sdata->local->mtx); + err = ieee80211_vif_use_channel(sdata, &setup->chandef, + IEEE80211_CHANCTX_SHARED); + mutex_unlock(&sdata->local->mtx); + if (err) + return err; + + return ieee80211_start_mesh(sdata); +} + +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); + mutex_lock(&sdata->local->mtx); + ieee80211_vif_release_channel(sdata); + mutex_unlock(&sdata->local->mtx); + + 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 = IEEE80211_DEV_TO_SUB_IF(dev); + enum ieee80211_band band; + u32 changed = 0; + + if (!sdata_dereference(sdata->u.ap.beacon, sdata)) + return -ENOENT; + + band = ieee80211_get_sdata_band(sdata); + + 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 && + 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) { + ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef, + wiphy->bands[band], + params->basic_rates, + params->basic_rates_len, + &sdata->vif.bss_conf.basic_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; + } + + if (params->p2p_ctwindow >= 0) { + sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= + ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK; + sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= + params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK; + changed |= BSS_CHANGED_P2P_PS; + } + + if (params->p2p_opp_ps > 0) { + sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |= + IEEE80211_P2P_OPPPS_ENABLE_BIT; + changed |= BSS_CHANGED_P2P_PS; + } else if (params->p2p_opp_ps == 0) { + sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &= + ~IEEE80211_P2P_OPPPS_ENABLE_BIT; + changed |= BSS_CHANGED_P2P_PS; + } + + 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; + + if (local->hw.queues < IEEE80211_NUM_ACS) + 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; + + sdata->tx_conf[params->ac] = p; + if (drv_conf_tx(local, sdata, params->ac, &p)) { + wiphy_debug(local->hw.wiphy, + "failed to set TX queue parameters for AC %d\n", + params->ac); + return -EINVAL; + } + + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); + + 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 cfg80211_scan_request *req) +{ + struct ieee80211_sub_if_data *sdata; + + sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev); + + 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: + case NL80211_IFTYPE_P2P_DEVICE: + break; + case NL80211_IFTYPE_P2P_GO: + if (sdata->local->ops->hw_scan) + 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 the scan has been forced (and the driver supports + * forcing), don't care about being beaconing already. + * This will create problems to the attached stations (e.g. all + * the frames sent while scanning on other channel will be + * lost) + */ + if (sdata->u.ap.beacon && + (!(wiphy->features & NL80211_FEATURE_AP_SCAN) || + !(req->flags & NL80211_SCAN_FLAG_AP))) + 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) +{ + 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) +{ + return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params); +} + +static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev) +{ + return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev)); +} + +static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev, + struct ocb_setup *setup) +{ + return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup); +} + +static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev) +{ + return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev)); +} + +static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev, + int rate[IEEE80211_NUM_BANDS]) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + + memcpy(sdata->vif.bss_conf.mcast_rate, rate, + sizeof(int) * IEEE80211_NUM_BANDS); + + return 0; +} + +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) || + (changed & WIPHY_PARAM_DYN_ACK)) { + s16 coverage_class; + + coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ? + wiphy->coverage_class : -1; + err = drv_set_coverage_class(local, 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) { + if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY) + return -EINVAL; + local->hw.conf.short_frame_max_tx_count = wiphy->retry_short; + } + if (changed & WIPHY_PARAM_RETRY_LONG) { + if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY) + return -EINVAL; + 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, + struct wireless_dev *wdev, + enum nl80211_tx_power_setting type, int mbm) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata; + enum nl80211_tx_power_setting txp_type = type; + bool update_txp_type = false; + + if (wdev) { + sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + + switch (type) { + case NL80211_TX_POWER_AUTOMATIC: + sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL; + txp_type = NL80211_TX_POWER_LIMITED; + break; + case NL80211_TX_POWER_LIMITED: + case NL80211_TX_POWER_FIXED: + if (mbm < 0 || (mbm % 100)) + return -EOPNOTSUPP; + sdata->user_power_level = MBM_TO_DBM(mbm); + break; + } + + if (txp_type != sdata->vif.bss_conf.txpower_type) { + update_txp_type = true; + sdata->vif.bss_conf.txpower_type = txp_type; + } + + ieee80211_recalc_txpower(sdata, update_txp_type); + + return 0; + } + + switch (type) { + case NL80211_TX_POWER_AUTOMATIC: + local->user_power_level = IEEE80211_UNSET_POWER_LEVEL; + txp_type = NL80211_TX_POWER_LIMITED; + break; + case NL80211_TX_POWER_LIMITED: + case NL80211_TX_POWER_FIXED: + if (mbm < 0 || (mbm % 100)) + return -EOPNOTSUPP; + local->user_power_level = MBM_TO_DBM(mbm); + break; + } + + mutex_lock(&local->iflist_mtx); + list_for_each_entry(sdata, &local->interfaces, list) { + sdata->user_power_level = local->user_power_level; + if (txp_type != sdata->vif.bss_conf.txpower_type) + update_txp_type = true; + sdata->vif.bss_conf.txpower_type = txp_type; + } + list_for_each_entry(sdata, &local->interfaces, list) + ieee80211_recalc_txpower(sdata, update_txp_type); + mutex_unlock(&local->iflist_mtx); + + return 0; +} + +static int ieee80211_get_tx_power(struct wiphy *wiphy, + struct wireless_dev *wdev, + int *dbm) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + + if (local->ops->get_txpower) + return drv_get_txpower(local, sdata, dbm); + + if (!local->use_chanctx) + *dbm = local->hw.conf.power_level; + else + *dbm = sdata->vif.bss_conf.txpower; + + 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, + struct wireless_dev *wdev, + void *data, int len) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_vif *vif = NULL; + + if (!local->ops->testmode_cmd) + return -EOPNOTSUPP; + + if (wdev) { + struct ieee80211_sub_if_data *sdata; + + sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + if (sdata->flags & IEEE80211_SDATA_IN_DRIVER) + vif = &sdata->vif; + } + + return local->ops->testmode_cmd(&local->hw, vif, 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_ap(struct ieee80211_sub_if_data *sdata, + enum ieee80211_smps_mode smps_mode) +{ + struct sta_info *sta; + enum ieee80211_smps_mode old_req; + + if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP)) + return -EINVAL; + + if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) + return 0; + + old_req = sdata->u.ap.req_smps; + sdata->u.ap.req_smps = smps_mode; + + /* AUTOMATIC doesn't mean much for AP - don't allow it */ + if (old_req == smps_mode || + smps_mode == IEEE80211_SMPS_AUTOMATIC) + return 0; + + /* If no associated stations, there's no need to do anything */ + if (!atomic_read(&sdata->u.ap.num_mcast_sta)) { + sdata->smps_mode = smps_mode; + ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); + return 0; + } + + ht_dbg(sdata, + "SMPS %d requested in AP mode, sending Action frame to %d stations\n", + smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta)); + + mutex_lock(&sdata->local->sta_mtx); + list_for_each_entry(sta, &sdata->local->sta_list, list) { + /* + * Only stations associated to our AP and + * associated VLANs + */ + if (sta->sdata->bss != &sdata->u.ap) + continue; + + /* This station doesn't support MIMO - skip it */ + if (sta_info_tx_streams(sta) == 1) + continue; + + /* + * Don't wake up a STA just to send the action frame + * unless we are getting more restrictive. + */ + if (test_sta_flag(sta, WLAN_STA_PS_STA) && + !ieee80211_smps_is_restrictive(sta->known_smps_mode, + smps_mode)) { + ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n", + sta->sta.addr); + continue; + } + + /* + * If the STA is not authorized, wait until it gets + * authorized and the action frame will be sent then. + */ + if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED)) + continue; + + ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr); + ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr, + sdata->vif.bss_conf.bssid); + } + mutex_unlock(&sdata->local->sta_mtx); + + sdata->smps_mode = smps_mode; + ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps); + + return 0; +} + +int __ieee80211_request_smps_mgd(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->wdev.mtx); + + if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) + return -EINVAL; + + 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 do anything, just store + * the new value until we associate. + */ + if (!sdata->u.mgd.associated || + sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) + 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 */ + sdata_lock(sdata); + __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps); + sdata_unlock(sdata); + + if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS) + ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); + + ieee80211_recalc_ps(local, -1); + ieee80211_recalc_ps_vif(sdata); + + 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 (!ieee80211_sdata_running(sdata)) + return -ENETDOWN; + + 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++) { + struct ieee80211_supported_band *sband = wiphy->bands[i]; + int j; + + sdata->rc_rateidx_mask[i] = mask->control[i].legacy; + memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs, + sizeof(mask->control[i].ht_mcs)); + + sdata->rc_has_mcs_mask[i] = false; + if (!sband) + continue; + + for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) + if (~sdata->rc_rateidx_mcs_mask[i][j]) { + sdata->rc_has_mcs_mask[i] = true; + break; + } + } + + return 0; +} + +static bool ieee80211_coalesce_started_roc(struct ieee80211_local *local, + struct ieee80211_roc_work *new_roc, + struct ieee80211_roc_work *cur_roc) +{ + unsigned long now = jiffies; + unsigned long remaining = cur_roc->hw_start_time + + msecs_to_jiffies(cur_roc->duration) - + now; + + if (WARN_ON(!cur_roc->started || !cur_roc->hw_begun)) + return false; + + /* if it doesn't fit entirely, schedule a new one */ + if (new_roc->duration > jiffies_to_msecs(remaining)) + return false; + + ieee80211_handle_roc_started(new_roc); + + /* add to dependents so we send the expired event properly */ + list_add_tail(&new_roc->list, &cur_roc->dependents); + return true; +} + +static int ieee80211_start_roc_work(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct ieee80211_channel *channel, + unsigned int duration, u64 *cookie, + struct sk_buff *txskb, + enum ieee80211_roc_type type) +{ + struct ieee80211_roc_work *roc, *tmp; + bool queued = false; + int ret; + + lockdep_assert_held(&local->mtx); + + if (local->use_chanctx && !local->ops->remain_on_channel) + return -EOPNOTSUPP; + + roc = kzalloc(sizeof(*roc), GFP_KERNEL); + if (!roc) + return -ENOMEM; + + /* + * If the duration is zero, then the driver + * wouldn't actually do anything. Set it to + * 10 for now. + * + * TODO: cancel the off-channel operation + * when we get the SKB's TX status and + * the wait time was zero before. + */ + if (!duration) + duration = 10; + + roc->chan = channel; + roc->duration = duration; + roc->req_duration = duration; + roc->frame = txskb; + roc->type = type; + roc->mgmt_tx_cookie = (unsigned long)txskb; + roc->sdata = sdata; + INIT_DELAYED_WORK(&roc->work, ieee80211_sw_roc_work); + INIT_LIST_HEAD(&roc->dependents); + + /* + * cookie is either the roc cookie (for normal roc) + * or the SKB (for mgmt TX) + */ + if (!txskb) { + /* local->mtx protects this */ + local->roc_cookie_counter++; + roc->cookie = local->roc_cookie_counter; + /* wow, you wrapped 64 bits ... more likely a bug */ + if (WARN_ON(roc->cookie == 0)) { + roc->cookie = 1; + local->roc_cookie_counter++; + } + *cookie = roc->cookie; + } else { + *cookie = (unsigned long)txskb; + } + + /* if there's one pending or we're scanning, queue this one */ + if (!list_empty(&local->roc_list) || + local->scanning || ieee80211_is_radar_required(local)) + goto out_check_combine; + + /* if not HW assist, just queue & schedule work */ + if (!local->ops->remain_on_channel) { + ieee80211_queue_delayed_work(&local->hw, &roc->work, 0); + goto out_queue; + } + + /* otherwise actually kick it off here (for error handling) */ + + ret = drv_remain_on_channel(local, sdata, channel, duration, type); + if (ret) { + kfree(roc); + return ret; + } + + roc->started = true; + goto out_queue; + + out_check_combine: + list_for_each_entry(tmp, &local->roc_list, list) { + if (tmp->chan != channel || tmp->sdata != sdata) + continue; + + /* + * Extend this ROC if possible: + * + * If it hasn't started yet, just increase the duration + * and add the new one to the list of dependents. + * If the type of the new ROC has higher priority, modify the + * type of the previous one to match that of the new one. + */ + if (!tmp->started) { + list_add_tail(&roc->list, &tmp->dependents); + tmp->duration = max(tmp->duration, roc->duration); + tmp->type = max(tmp->type, roc->type); + queued = true; + break; + } + + /* If it has already started, it's more difficult ... */ + if (local->ops->remain_on_channel) { + /* + * In the offloaded ROC case, if it hasn't begun, add + * this new one to the dependent list to be handled + * when the master one begins. If it has begun, + * check if it fits entirely within the existing one, + * in which case it will just be dependent as well. + * Otherwise, schedule it by itself. + */ + if (!tmp->hw_begun) { + list_add_tail(&roc->list, &tmp->dependents); + queued = true; + break; + } + + if (ieee80211_coalesce_started_roc(local, roc, tmp)) + queued = true; + } else if (del_timer_sync(&tmp->work.timer)) { + unsigned long new_end; + + /* + * In the software ROC case, cancel the timer, if + * that fails then the finish work is already + * queued/pending and thus we queue the new ROC + * normally, if that succeeds then we can extend + * the timer duration and TX the frame (if any.) + */ + + list_add_tail(&roc->list, &tmp->dependents); + queued = true; + + new_end = jiffies + msecs_to_jiffies(roc->duration); + + /* ok, it was started & we canceled timer */ + if (time_after(new_end, tmp->work.timer.expires)) + mod_timer(&tmp->work.timer, new_end); + else + add_timer(&tmp->work.timer); + + ieee80211_handle_roc_started(roc); + } + break; + } + + out_queue: + if (!queued) + list_add_tail(&roc->list, &local->roc_list); + + return 0; +} + +static int ieee80211_remain_on_channel(struct wiphy *wiphy, + struct wireless_dev *wdev, + struct ieee80211_channel *chan, + unsigned int duration, + u64 *cookie) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct ieee80211_local *local = sdata->local; + int ret; + + mutex_lock(&local->mtx); + ret = ieee80211_start_roc_work(local, sdata, chan, + duration, cookie, NULL, + IEEE80211_ROC_TYPE_NORMAL); + mutex_unlock(&local->mtx); + + return ret; +} + +static int ieee80211_cancel_roc(struct ieee80211_local *local, + u64 cookie, bool mgmt_tx) +{ + struct ieee80211_roc_work *roc, *tmp, *found = NULL; + int ret; + + mutex_lock(&local->mtx); + list_for_each_entry_safe(roc, tmp, &local->roc_list, list) { + struct ieee80211_roc_work *dep, *tmp2; + + list_for_each_entry_safe(dep, tmp2, &roc->dependents, list) { + if (!mgmt_tx && dep->cookie != cookie) + continue; + else if (mgmt_tx && dep->mgmt_tx_cookie != cookie) + continue; + /* found dependent item -- just remove it */ + list_del(&dep->list); + mutex_unlock(&local->mtx); + + ieee80211_roc_notify_destroy(dep, true); + return 0; + } + + if (!mgmt_tx && roc->cookie != cookie) + continue; + else if (mgmt_tx && roc->mgmt_tx_cookie != cookie) + continue; + + found = roc; + break; + } + + if (!found) { + mutex_unlock(&local->mtx); + return -ENOENT; + } + + /* + * We found the item to cancel, so do that. Note that it + * may have dependents, which we also cancel (and send + * the expired signal for.) Not doing so would be quite + * tricky here, but we may need to fix it later. + */ + + if (local->ops->remain_on_channel) { + if (found->started) { + ret = drv_cancel_remain_on_channel(local); + if (WARN_ON_ONCE(ret)) { + mutex_unlock(&local->mtx); + return ret; + } + } + + list_del(&found->list); + + if (found->started) + ieee80211_start_next_roc(local); + mutex_unlock(&local->mtx); + + ieee80211_roc_notify_destroy(found, true); + } else { + /* work may be pending so use it all the time */ + found->abort = true; + ieee80211_queue_delayed_work(&local->hw, &found->work, 0); + + mutex_unlock(&local->mtx); + + /* work will clean up etc */ + flush_delayed_work(&found->work); + WARN_ON(!found->to_be_freed); + kfree(found); + } + + return 0; +} + +static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy, + struct wireless_dev *wdev, + u64 cookie) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct ieee80211_local *local = sdata->local; + + return ieee80211_cancel_roc(local, cookie, false); +} + +static int ieee80211_start_radar_detection(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_chan_def *chandef, + u32 cac_time_ms) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + int err; + + mutex_lock(&local->mtx); + if (!list_empty(&local->roc_list) || local->scanning) { + err = -EBUSY; + goto out_unlock; + } + + /* whatever, but channel contexts should not complain about that one */ + sdata->smps_mode = IEEE80211_SMPS_OFF; + sdata->needed_rx_chains = local->rx_chains; + + err = ieee80211_vif_use_channel(sdata, chandef, + IEEE80211_CHANCTX_SHARED); + if (err) + goto out_unlock; + + ieee80211_queue_delayed_work(&sdata->local->hw, + &sdata->dfs_cac_timer_work, + msecs_to_jiffies(cac_time_ms)); + + out_unlock: + mutex_unlock(&local->mtx); + return err; +} + +static struct cfg80211_beacon_data * +cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon) +{ + struct cfg80211_beacon_data *new_beacon; + u8 *pos; + int len; + + len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len + + beacon->proberesp_ies_len + beacon->assocresp_ies_len + + beacon->probe_resp_len; + + new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL); + if (!new_beacon) + return NULL; + + pos = (u8 *)(new_beacon + 1); + if (beacon->head_len) { + new_beacon->head_len = beacon->head_len; + new_beacon->head = pos; + memcpy(pos, beacon->head, beacon->head_len); + pos += beacon->head_len; + } + if (beacon->tail_len) { + new_beacon->tail_len = beacon->tail_len; + new_beacon->tail = pos; + memcpy(pos, beacon->tail, beacon->tail_len); + pos += beacon->tail_len; + } + if (beacon->beacon_ies_len) { + new_beacon->beacon_ies_len = beacon->beacon_ies_len; + new_beacon->beacon_ies = pos; + memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len); + pos += beacon->beacon_ies_len; + } + if (beacon->proberesp_ies_len) { + new_beacon->proberesp_ies_len = beacon->proberesp_ies_len; + new_beacon->proberesp_ies = pos; + memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len); + pos += beacon->proberesp_ies_len; + } + if (beacon->assocresp_ies_len) { + new_beacon->assocresp_ies_len = beacon->assocresp_ies_len; + new_beacon->assocresp_ies = pos; + memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len); + pos += beacon->assocresp_ies_len; + } + if (beacon->probe_resp_len) { + new_beacon->probe_resp_len = beacon->probe_resp_len; + beacon->probe_resp = pos; + memcpy(pos, beacon->probe_resp, beacon->probe_resp_len); + pos += beacon->probe_resp_len; + } + + return new_beacon; +} + +void ieee80211_csa_finish(struct ieee80211_vif *vif) +{ + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + + ieee80211_queue_work(&sdata->local->hw, + &sdata->csa_finalize_work); +} +EXPORT_SYMBOL(ieee80211_csa_finish); + +static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, + u32 *changed) +{ + int err; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP: + err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon, + NULL); + kfree(sdata->u.ap.next_beacon); + sdata->u.ap.next_beacon = NULL; + + if (err < 0) + return err; + *changed |= err; + break; + case NL80211_IFTYPE_ADHOC: + err = ieee80211_ibss_finish_csa(sdata); + if (err < 0) + return err; + *changed |= err; + break; +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: + err = ieee80211_mesh_finish_csa(sdata); + if (err < 0) + return err; + *changed |= err; + break; +#endif + default: + WARN_ON(1); + return -EINVAL; + } + + return 0; +} + +static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_local *local = sdata->local; + u32 changed = 0; + int err; + + sdata_assert_lock(sdata); + lockdep_assert_held(&local->mtx); + lockdep_assert_held(&local->chanctx_mtx); + + /* + * using reservation isn't immediate as it may be deferred until later + * with multi-vif. once reservation is complete it will re-schedule the + * work with no reserved_chanctx so verify chandef to check if it + * completed successfully + */ + + if (sdata->reserved_chanctx) { + /* + * with multi-vif csa driver may call ieee80211_csa_finish() + * many times while waiting for other interfaces to use their + * reservations + */ + if (sdata->reserved_ready) + return 0; + + return ieee80211_vif_use_reserved_context(sdata); + } + + if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, + &sdata->csa_chandef)) + return -EINVAL; + + sdata->vif.csa_active = false; + + err = ieee80211_set_after_csa_beacon(sdata, &changed); + if (err) + return err; + + ieee80211_bss_info_change_notify(sdata, changed); + + if (sdata->csa_block_tx) { + ieee80211_wake_vif_queues(local, sdata, + IEEE80211_QUEUE_STOP_REASON_CSA); + sdata->csa_block_tx = false; + } + + err = drv_post_channel_switch(sdata); + if (err) + return err; + + cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef); + + return 0; +} + +static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) +{ + if (__ieee80211_csa_finalize(sdata)) { + sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); + cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, + GFP_KERNEL); + } +} + +void ieee80211_csa_finalize_work(struct work_struct *work) +{ + struct ieee80211_sub_if_data *sdata = + container_of(work, struct ieee80211_sub_if_data, + csa_finalize_work); + struct ieee80211_local *local = sdata->local; + + sdata_lock(sdata); + mutex_lock(&local->mtx); + mutex_lock(&local->chanctx_mtx); + + /* AP might have been stopped while waiting for the lock. */ + if (!sdata->vif.csa_active) + goto unlock; + + if (!ieee80211_sdata_running(sdata)) + goto unlock; + + ieee80211_csa_finalize(sdata); + +unlock: + mutex_unlock(&local->chanctx_mtx); + mutex_unlock(&local->mtx); + sdata_unlock(sdata); +} + +static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, + struct cfg80211_csa_settings *params, + u32 *changed) +{ + struct ieee80211_csa_settings csa = {}; + int err; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_AP: + sdata->u.ap.next_beacon = + cfg80211_beacon_dup(¶ms->beacon_after); + if (!sdata->u.ap.next_beacon) + return -ENOMEM; + + /* + * With a count of 0, we don't have to wait for any + * TBTT before switching, so complete the CSA + * immediately. In theory, with a count == 1 we + * should delay the switch until just before the next + * TBTT, but that would complicate things so we switch + * immediately too. If we would delay the switch + * until the next TBTT, we would have to set the probe + * response here. + * + * TODO: A channel switch with count <= 1 without + * sending a CSA action frame is kind of useless, + * because the clients won't know we're changing + * channels. The action frame must be implemented + * either here or in the userspace. + */ + if (params->count <= 1) + break; + + if ((params->n_counter_offsets_beacon > + IEEE80211_MAX_CSA_COUNTERS_NUM) || + (params->n_counter_offsets_presp > + IEEE80211_MAX_CSA_COUNTERS_NUM)) + return -EINVAL; + + csa.counter_offsets_beacon = params->counter_offsets_beacon; + csa.counter_offsets_presp = params->counter_offsets_presp; + csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon; + csa.n_counter_offsets_presp = params->n_counter_offsets_presp; + csa.count = params->count; + + err = ieee80211_assign_beacon(sdata, ¶ms->beacon_csa, &csa); + if (err < 0) { + kfree(sdata->u.ap.next_beacon); + return err; + } + *changed |= err; + + break; + case NL80211_IFTYPE_ADHOC: + if (!sdata->vif.bss_conf.ibss_joined) + return -EINVAL; + + if (params->chandef.width != sdata->u.ibss.chandef.width) + return -EINVAL; + + switch (params->chandef.width) { + case NL80211_CHAN_WIDTH_40: + if (cfg80211_get_chandef_type(¶ms->chandef) != + cfg80211_get_chandef_type(&sdata->u.ibss.chandef)) + return -EINVAL; + case NL80211_CHAN_WIDTH_5: + case NL80211_CHAN_WIDTH_10: + case NL80211_CHAN_WIDTH_20_NOHT: + case NL80211_CHAN_WIDTH_20: + break; + default: + return -EINVAL; + } + + /* changes into another band are not supported */ + if (sdata->u.ibss.chandef.chan->band != + params->chandef.chan->band) + return -EINVAL; + + /* see comments in the NL80211_IFTYPE_AP block */ + if (params->count > 1) { + err = ieee80211_ibss_csa_beacon(sdata, params); + if (err < 0) + return err; + *changed |= err; + } + + ieee80211_send_action_csa(sdata, params); + + break; +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: { + struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh; + + if (params->chandef.width != sdata->vif.bss_conf.chandef.width) + return -EINVAL; + + /* changes into another band are not supported */ + if (sdata->vif.bss_conf.chandef.chan->band != + params->chandef.chan->band) + return -EINVAL; + + if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) { + ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT; + if (!ifmsh->pre_value) + ifmsh->pre_value = 1; + else + ifmsh->pre_value++; + } + + /* see comments in the NL80211_IFTYPE_AP block */ + if (params->count > 1) { + err = ieee80211_mesh_csa_beacon(sdata, params); + if (err < 0) { + ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE; + return err; + } + *changed |= err; + } + + if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT) + ieee80211_send_action_csa(sdata, params); + + break; + } +#endif + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static int +__ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_csa_settings *params) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee80211_channel_switch ch_switch; + struct ieee80211_chanctx_conf *conf; + struct ieee80211_chanctx *chanctx; + u32 changed = 0; + int err; + + sdata_assert_lock(sdata); + lockdep_assert_held(&local->mtx); + + if (!list_empty(&local->roc_list) || local->scanning) + return -EBUSY; + + if (sdata->wdev.cac_started) + return -EBUSY; + + if (cfg80211_chandef_identical(¶ms->chandef, + &sdata->vif.bss_conf.chandef)) + return -EINVAL; + + /* don't allow another channel switch if one is already active. */ + if (sdata->vif.csa_active) + return -EBUSY; + + mutex_lock(&local->chanctx_mtx); + conf = rcu_dereference_protected(sdata->vif.chanctx_conf, + lockdep_is_held(&local->chanctx_mtx)); + if (!conf) { + err = -EBUSY; + goto out; + } + + chanctx = container_of(conf, struct ieee80211_chanctx, conf); + if (!chanctx) { + err = -EBUSY; + goto out; + } + + ch_switch.timestamp = 0; + ch_switch.device_timestamp = 0; + ch_switch.block_tx = params->block_tx; + ch_switch.chandef = params->chandef; + ch_switch.count = params->count; + + err = drv_pre_channel_switch(sdata, &ch_switch); + if (err) + goto out; + + err = ieee80211_vif_reserve_chanctx(sdata, ¶ms->chandef, + chanctx->mode, + params->radar_required); + if (err) + goto out; + + /* if reservation is invalid then this will fail */ + err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0); + if (err) { + ieee80211_vif_unreserve_chanctx(sdata); + goto out; + } + + err = ieee80211_set_csa_beacon(sdata, params, &changed); + if (err) { + ieee80211_vif_unreserve_chanctx(sdata); + goto out; + } + + sdata->csa_chandef = params->chandef; + sdata->csa_block_tx = params->block_tx; + sdata->vif.csa_active = true; + + if (sdata->csa_block_tx) + ieee80211_stop_vif_queues(local, sdata, + IEEE80211_QUEUE_STOP_REASON_CSA); + + cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef, + params->count); + + if (changed) { + ieee80211_bss_info_change_notify(sdata, changed); + drv_channel_switch_beacon(sdata, ¶ms->chandef); + } else { + /* if the beacon didn't change, we can finalize immediately */ + ieee80211_csa_finalize(sdata); + } + +out: + mutex_unlock(&local->chanctx_mtx); + return err; +} + +int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, + struct cfg80211_csa_settings *params) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + int err; + + mutex_lock(&local->mtx); + err = __ieee80211_channel_switch(wiphy, dev, params); + mutex_unlock(&local->mtx); + + return err; +} + +static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, + struct cfg80211_mgmt_tx_params *params, + u64 *cookie) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct ieee80211_local *local = sdata->local; + struct sk_buff *skb; + struct sta_info *sta; + const struct ieee80211_mgmt *mgmt = (void *)params->buf; + bool need_offchan = false; + u32 flags; + int ret; + u8 *data; + + if (params->dont_wait_for_ack) + flags = IEEE80211_TX_CTL_NO_ACK; + else + flags = IEEE80211_TX_INTFL_NL80211_FRAME_TX | + IEEE80211_TX_CTL_REQ_TX_STATUS; + + if (params->no_cck) + flags |= IEEE80211_TX_CTL_NO_CCK_RATE; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_ADHOC: + if (!sdata->vif.bss_conf.ibss_joined) + need_offchan = true; + /* fall through */ +#ifdef CONFIG_MAC80211_MESH + case NL80211_IFTYPE_MESH_POINT: + if (ieee80211_vif_is_mesh(&sdata->vif) && + !sdata->u.mesh.mesh_id_len) + need_offchan = true; + /* fall through */ +#endif + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_P2P_GO: + if (sdata->vif.type != NL80211_IFTYPE_ADHOC && + !ieee80211_vif_is_mesh(&sdata->vif) && + !rcu_access_pointer(sdata->bss->beacon)) + need_offchan = true; + if (!ieee80211_is_action(mgmt->frame_control) || + mgmt->u.action.category == WLAN_CATEGORY_PUBLIC || + mgmt->u.action.category == WLAN_CATEGORY_SELF_PROTECTED || + mgmt->u.action.category == WLAN_CATEGORY_SPECTRUM_MGMT) + 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: + if (!sdata->u.mgd.associated) + need_offchan = true; + break; + case NL80211_IFTYPE_P2P_DEVICE: + need_offchan = true; + break; + default: + return -EOPNOTSUPP; + } + + /* configurations requiring offchan cannot work if no channel has been + * specified + */ + if (need_offchan && !params->chan) + return -EINVAL; + + mutex_lock(&local->mtx); + + /* Check if the operating channel is the requested channel */ + if (!need_offchan) { + struct ieee80211_chanctx_conf *chanctx_conf; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + + if (chanctx_conf) { + need_offchan = params->chan && + (params->chan != + chanctx_conf->def.chan); + } else if (!params->chan) { + ret = -EINVAL; + rcu_read_unlock(); + goto out_unlock; + } else { + need_offchan = true; + } + rcu_read_unlock(); + } + + if (need_offchan && !params->offchan) { + ret = -EBUSY; + goto out_unlock; + } + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + params->len); + if (!skb) { + ret = -ENOMEM; + goto out_unlock; + } + skb_reserve(skb, local->hw.extra_tx_headroom); + + data = skb_put(skb, params->len); + memcpy(data, params->buf, params->len); + + /* Update CSA counters */ + if (sdata->vif.csa_active && + (sdata->vif.type == NL80211_IFTYPE_AP || + sdata->vif.type == NL80211_IFTYPE_MESH_POINT || + sdata->vif.type == NL80211_IFTYPE_ADHOC) && + params->n_csa_offsets) { + int i; + struct beacon_data *beacon = NULL; + + rcu_read_lock(); + + if (sdata->vif.type == NL80211_IFTYPE_AP) + beacon = rcu_dereference(sdata->u.ap.beacon); + else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) + beacon = rcu_dereference(sdata->u.ibss.presp); + else if (ieee80211_vif_is_mesh(&sdata->vif)) + beacon = rcu_dereference(sdata->u.mesh.beacon); + + if (beacon) + for (i = 0; i < params->n_csa_offsets; i++) + data[params->csa_offsets[i]] = + beacon->csa_current_counter; + + rcu_read_unlock(); + } + + IEEE80211_SKB_CB(skb)->flags = flags; + + skb->dev = sdata->dev; + + if (!need_offchan) { + *cookie = (unsigned long) skb; + ieee80211_tx_skb(sdata, skb); + ret = 0; + goto out_unlock; + } + + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN | + IEEE80211_TX_INTFL_OFFCHAN_TX_OK; + if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL) + IEEE80211_SKB_CB(skb)->hw_queue = + local->hw.offchannel_tx_hw_queue; + + /* This will handle all kinds of coalescing and immediate TX */ + ret = ieee80211_start_roc_work(local, sdata, params->chan, + params->wait, cookie, skb, + IEEE80211_ROC_TYPE_MGMT_TX); + if (ret) + kfree_skb(skb); + out_unlock: + mutex_unlock(&local->mtx); + return ret; +} + +static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, + struct wireless_dev *wdev, + u64 cookie) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + return ieee80211_cancel_roc(local, cookie, true); +} + +static void ieee80211_mgmt_frame_register(struct wiphy *wiphy, + struct wireless_dev *wdev, + u16 frame_type, bool reg) +{ + struct ieee80211_local *local = wiphy_priv(wiphy); + + switch (frame_type) { + case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ: + if (reg) + local->probe_req_reg++; + else + local->probe_req_reg--; + + if (!local->open_count) + break; + + ieee80211_queue_work(&local->hw, &local->reconfig_filter); + break; + default: + break; + } +} + +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_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 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; + struct ieee80211_chanctx_conf *chanctx_conf; + enum ieee80211_band band; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (WARN_ON(!chanctx_conf)) { + rcu_read_unlock(); + return -EINVAL; + } + band = chanctx_conf->def.chan->band; + sta = sta_info_get_bss(sdata, peer); + if (sta) { + qos = sta->sta.wme; + } 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) { + rcu_read_unlock(); + 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; + info->band = band; + + 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, sta, skb); + local_bh_enable(); + rcu_read_unlock(); + + *cookie = (unsigned long) skb; + return 0; +} + +static int ieee80211_cfg_get_channel(struct wiphy *wiphy, + struct wireless_dev *wdev, + struct cfg80211_chan_def *chandef) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct ieee80211_local *local = wiphy_priv(wiphy); + struct ieee80211_chanctx_conf *chanctx_conf; + int ret = -ENODATA; + + rcu_read_lock(); + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (chanctx_conf) { + *chandef = sdata->vif.bss_conf.chandef; + ret = 0; + } else if (local->open_count > 0 && + local->open_count == local->monitors && + sdata->vif.type == NL80211_IFTYPE_MONITOR) { + if (local->use_chanctx) + *chandef = local->monitor_chandef; + else + *chandef = local->_oper_chandef; + ret = 0; + } + rcu_read_unlock(); + + return ret; +} + +#ifdef CONFIG_PM +static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled) +{ + drv_set_wakeup(wiphy_priv(wiphy), enabled); +} +#endif + +static int ieee80211_set_qos_map(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_qos_map *qos_map) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct mac80211_qos_map *new_qos_map, *old_qos_map; + + if (qos_map) { + new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL); + if (!new_qos_map) + return -ENOMEM; + memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map)); + } else { + /* A NULL qos_map was passed to disable QoS mapping */ + new_qos_map = NULL; + } + + old_qos_map = sdata_dereference(sdata->qos_map, sdata); + rcu_assign_pointer(sdata->qos_map, new_qos_map); + if (old_qos_map) + kfree_rcu(old_qos_map, rcu_head); + + return 0; +} + +static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy, + struct net_device *dev, + struct cfg80211_chan_def *chandef) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + int ret; + u32 changed = 0; + + ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed); + if (ret == 0) + ieee80211_bss_info_change_notify(sdata, changed); + + return ret; +} + +static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev, + u8 tsid, const u8 *peer, u8 up, + u16 admitted_time) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + int ac = ieee802_1d_to_ac[up]; + + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + + if (!(sdata->wmm_acm & BIT(up))) + return -EINVAL; + + if (ifmgd->tx_tspec[ac].admitted_time) + return -EBUSY; + + if (admitted_time) { + ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time; + ifmgd->tx_tspec[ac].tsid = tsid; + ifmgd->tx_tspec[ac].up = up; + } + + return 0; +} + +static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev, + u8 tsid, const u8 *peer) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + struct ieee80211_local *local = wiphy_priv(wiphy); + int ac; + + for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { + struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac]; + + /* skip unused entries */ + if (!tx_tspec->admitted_time) + continue; + + if (tx_tspec->tsid != tsid) + continue; + + /* due to this new packets will be reassigned to non-ACM ACs */ + tx_tspec->up = -1; + + /* Make sure that all packets have been sent to avoid to + * restore the QoS params on packets that are still on the + * queues. + */ + synchronize_net(); + ieee80211_flush_queues(local, sdata, false); + + /* restore the normal QoS parameters + * (unconditionally to avoid races) + */ + tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE; + tx_tspec->downgraded = false; + ieee80211_sta_handle_tspec_ac_params(sdata); + + /* finally clear all the data */ + memset(tx_tspec, 0, sizeof(*tx_tspec)); + + return 0; + } + + return -ENOENT; +} + +const struct cfg80211_ops mac80211_config_ops = { + .add_virtual_intf = ieee80211_add_iface, + .del_virtual_intf = ieee80211_del_iface, + .change_virtual_intf = ieee80211_change_iface, + .start_p2p_device = ieee80211_start_p2p_device, + .stop_p2p_device = ieee80211_stop_p2p_device, + .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, + .get_mpp = ieee80211_get_mpp, + .dump_mpp = ieee80211_dump_mpp, + .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 + .join_ocb = ieee80211_join_ocb, + .leave_ocb = ieee80211_leave_ocb, + .change_bss = ieee80211_change_bss, + .set_txq_params = ieee80211_set_txq_params, + .set_monitor_channel = ieee80211_set_monitor_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_mcast_rate = ieee80211_set_mcast_rate, + .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_rekey_data = ieee80211_set_rekey_data, + .tdls_oper = ieee80211_tdls_oper, + .tdls_mgmt = ieee80211_tdls_mgmt, + .tdls_channel_switch = ieee80211_tdls_channel_switch, + .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch, + .probe_client = ieee80211_probe_client, + .set_noack_map = ieee80211_set_noack_map, +#ifdef CONFIG_PM + .set_wakeup = ieee80211_set_wakeup, +#endif + .get_channel = ieee80211_cfg_get_channel, + .start_radar_detection = ieee80211_start_radar_detection, + .channel_switch = ieee80211_channel_switch, + .set_qos_map = ieee80211_set_qos_map, + .set_ap_chanwidth = ieee80211_set_ap_chanwidth, + .add_tx_ts = ieee80211_add_tx_ts, + .del_tx_ts = ieee80211_del_tx_ts, +}; 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