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linux/net/mac80211/cfg.c
Eliad Peller f8079d43cf mac80211: move TKIP TX IVs to public part of key struct 
Some drivers/devices might want to set the IVs by
themselves (and still let mac80211 generate MMIC).

Specifically, this is needed when the device does
offloading at certain times, and the driver has
to make sure that the IVs of new tx frames (from
the host) are synchronized with IVs that were
potentially used during the offloading.

Similarly to CCMP, move the TX IVs of TKIP keys to the
public part of the key struct, and export a function
to add the IV right into the crypto header.

The public tx_pn field is defined as atomic64, so define
TKIP_PN_TO_IV16/32 helper macros to convert it to iv16/32
when needed.

Since the iv32 used for the p1k cache is taken
directly from the frame, we can safely remove
iv16/32 from being protected by tkip.txlock.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:38 +01:00

3440 lines
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/*
* mac80211 configuration hooks for cfg80211
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2015 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 "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;
ieee80211_check_fast_xmit_iface(sdata);
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;
struct ieee80211_key_seq kseq = {};
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(&params, 0, sizeof(params));
params.cipher = key->conf.cipher;
switch (key->conf.cipher) {
case WLAN_CIPHER_SUITE_TKIP:
pn64 = atomic64_read(&key->conf.tx_pn);
iv32 = TKIP_PN_TO_IV32(pn64);
iv16 = TKIP_PN_TO_IV16(pn64);
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
!(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
drv_get_key_seq(sdata->local, key, &kseq);
iv32 = kseq.tkip.iv32;
iv16 = kseq.tkip.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:
case WLAN_CIPHER_SUITE_AES_CMAC:
case WLAN_CIPHER_SUITE_BIP_CMAC_256:
BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
offsetof(typeof(kseq), aes_cmac));
case WLAN_CIPHER_SUITE_BIP_GMAC_128:
case WLAN_CIPHER_SUITE_BIP_GMAC_256:
BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
offsetof(typeof(kseq), aes_gmac));
case WLAN_CIPHER_SUITE_GCMP:
case WLAN_CIPHER_SUITE_GCMP_256:
BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
offsetof(typeof(kseq), gcmp));
if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
!(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
drv_get_key_seq(sdata->local, key, &kseq);
memcpy(seq, kseq.ccmp.pn, 6);
} else {
pn64 = atomic64_read(&key->conf.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;
default:
if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
break;
if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
break;
drv_get_key_seq(sdata->local, key, &kseq);
params.seq = kseq.hw.seq;
params.seq_len = kseq.hw.seq_len;
break;
}
params.key = key->conf.key;
params.key_len = key->conf.keylen;
callback(cookie, &params);
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;
}
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, &params->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,
&params->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,
&params->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, &params->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_RATE_CONTROL))
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 void sta_apply_mesh_params(struct ieee80211_local *local,
struct sta_info *sta,
struct station_parameters *params)
{
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_sub_if_data *sdata = sta->sdata;
u32 changed = 0;
if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
switch (params->plink_state) {
case NL80211_PLINK_ESTAB:
if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
changed = mesh_plink_inc_estab_count(sdata);
sta->mesh->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->mesh->plink_state == NL80211_PLINK_ESTAB)
changed = mesh_plink_dec_estab_count(sdata);
sta->mesh->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
}
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,
* and for unassociated stations that move to assocaited */
if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
!((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
(set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
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 (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
!sdata->u.mgd.tdls_wider_bw_prohibited &&
ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
params->ext_capab_len >= 8 &&
params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
sta->sta.uapsd_queues = params->uapsd_queues;
sta->sta.max_sp = params->max_sp;
}
/* The sender might not have sent the last bit, consider it to be 0 */
if (params->ext_capab_len >= 8) {
u8 val = (params->ext_capab[7] &
WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
/* we did get all the bits, take the MSB as well */
if (params->ext_capab_len >= 9) {
u8 val_msb = params->ext_capab[8] &
WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
val_msb <<= 1;
val |= val_msb;
}
switch (val) {
case 1:
sta->sta.max_amsdu_subframes = 32;
break;
case 2:
sta->sta.max_amsdu_subframes = 16;
break;
case 3:
sta->sta.max_amsdu_subframes = 8;
break;
default:
sta->sta.max_amsdu_subframes = 0;
}
}
/*
* 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);
/* VHT can override some HT caps such as the A-MSDU max length */
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);
}
if (ieee80211_vif_is_mesh(&sdata->vif))
sta_apply_mesh_params(local, sta, params);
/* set the STA state after all sta info from usermode has been set */
if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
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;
if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
sta->sta.tdls = true;
err = sta_apply_parameters(local, sta, params);
if (err) {
sta_info_free(local, sta);
return err;
}
/*
* for TDLS and for unassociated station, rate control should be
* initialized only when rates are known and station is marked
* authorized/associated
*/
if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
test_sta_flag(sta, WLAN_STA_ASSOC))
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:
if (test_sta_flag(sta, WLAN_STA_ASSOC))
statype = CFG80211_STA_AP_CLIENT;
else
statype = CFG80211_STA_AP_CLIENT_UNASSOC;
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;
ieee80211_check_fast_xmit(sta);
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);
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 (!ieee80211_hw_check(&sdata->local->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 void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
{
ieee80211_scan_cancel(wiphy_priv(wiphy));
}
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_local *local = wiphy_priv(wiphy);
if (!local->ops->sched_scan_stop)
return -EOPNOTSUPP;
return ieee80211_request_sched_scan_stop(local);
}
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) {
ieee80211_check_fast_xmit_all(local);
err = drv_set_frag_threshold(local, wiphy->frag_threshold);
if (err) {
ieee80211_check_fast_xmit_all(local);
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;
struct sta_info *sta;
bool tdls_peer_found = false;
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;
rcu_read_lock();
list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
continue;
tdls_peer_found = true;
break;
}
rcu_read_unlock();
if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
if (tdls_peer_found || !sdata->u.mgd.powersave)
smps_mode = IEEE80211_SMPS_OFF;
else
smps_mode = IEEE80211_SMPS_DYNAMIC;
}
/* 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;
else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
ieee80211_teardown_tdls_peers(sdata);
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 (!ieee80211_hw_check(&local->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 (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
ieee80211_recalc_ps(local);
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;
if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
!(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
return -EOPNOTSUPP;
bss_conf->cqm_rssi_thold = rssi_thold;
bss_conf->cqm_rssi_hyst = rssi_hyst;
sdata->u.mgd.last_cqm_event_signal = 0;
/* 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 (ieee80211_hw_check(&local->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));
memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
mask->control[i].vht_mcs,
sizeof(mask->control[i].vht_mcs));
sdata->rc_has_mcs_mask[i] = false;
sdata->rc_has_vht_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;
}
}
for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
sdata->rc_has_vht_mcs_mask[i] = true;
break;
}
}
}
return 0;
}
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(&params->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, &params->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(&params->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(&params->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, &params->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, &params->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;
}
u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
{
lockdep_assert_held(&local->mtx);
local->roc_cookie_counter++;
/* wow, you wrapped 64 bits ... more likely a bug */
if (WARN_ON(local->roc_cookie_counter == 0))
local->roc_cookie_counter++;
return local->roc_cookie_counter;
}
int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
u64 *cookie, gfp_t gfp)
{
unsigned long spin_flags;
struct sk_buff *ack_skb;
int id;
ack_skb = skb_copy(skb, gfp);
if (!ack_skb)
return -ENOMEM;
spin_lock_irqsave(&local->ack_status_lock, spin_flags);
id = idr_alloc(&local->ack_status_frames, ack_skb,
1, 0x10000, GFP_ATOMIC);
spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
if (id < 0) {
kfree_skb(ack_skb);
return -ENOMEM;
}
IEEE80211_SKB_CB(skb)->ack_frame_id = id;
*cookie = ieee80211_mgmt_tx_cookie(local);
IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
return 0;
}
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);
struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
switch (frame_type) {
case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
if (reg) {
local->probe_req_reg++;
sdata->vif.probe_req_reg++;
} else {
if (local->probe_req_reg)
local->probe_req_reg--;
if (sdata->vif.probe_req_reg)
sdata->vif.probe_req_reg--;
}
if (!local->open_count)
break;
if (sdata->vif.probe_req_reg == 1)
drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
FIF_PROBE_REQ);
else if (sdata->vif.probe_req_reg == 0)
drv_config_iface_filter(local, sdata, 0,
FIF_PROBE_REQ);
ieee80211_configure_filter(local);
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;
int ret;
/* the lock is needed to assign the cookie later */
mutex_lock(&local->mtx);
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (WARN_ON(!chanctx_conf)) {
ret = -EINVAL;
goto unlock;
}
band = chanctx_conf->def.chan->band;
sta = sta_info_get_bss(sdata, peer);
if (sta) {
qos = sta->sta.wme;
} else {
ret = -ENOLINK;
goto unlock;
}
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) {
ret = -ENOMEM;
goto unlock;
}
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);
ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
if (ret) {
kfree_skb(skb);
goto unlock;
}
local_bh_disable();
ieee80211_xmit(sdata, sta, skb);
local_bh_enable();
ret = 0;
unlock:
rcu_read_unlock();
mutex_unlock(&local->mtx);
return ret;
}
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,
.abort_scan = ieee80211_abort_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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