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Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Browse Source 
Conflicts:
	net/wireless/reg.c
This commit is contained in:
John W. Linville 2013-11-05 15:49:02 -05:00
commit 353c78152c
38 changed files with 1302 additions and 453 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/DocBook/80211.tmpl
View File

@ -152,8 +152,8 @@
!Finclude/net/cfg80211.h cfg80211_scan_request
!Finclude/net/cfg80211.h cfg80211_scan_done
!Finclude/net/cfg80211.h cfg80211_bss
!Finclude/net/cfg80211.h cfg80211_inform_bss_frame
!Finclude/net/cfg80211.h cfg80211_inform_bss
!Finclude/net/cfg80211.h cfg80211_inform_bss_width_frame
!Finclude/net/cfg80211.h cfg80211_inform_bss_width
!Finclude/net/cfg80211.h cfg80211_unlink_bss
!Finclude/net/cfg80211.h cfg80211_find_ie
!Finclude/net/cfg80211.h ieee80211_bss_get_ie

27
drivers/net/wireless/mac80211_hwsim.c
View File

@ -167,6 +167,7 @@ struct hwsim_vif_priv {
u32 magic;
u8 bssid[ETH_ALEN];
bool assoc;
bool bcn_en;
u16 aid;
};
@ -1170,6 +1171,16 @@ static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
*total_flags = data->rx_filter;
}
static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
unsigned int *count = data;
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
if (vp->bcn_en)
(*count)++;
}
static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
@ -1180,7 +1191,8 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
hwsim_check_magic(vif);
wiphy_debug(hw->wiphy, "%s(changed=0x%x)\n", __func__, changed);
wiphy_debug(hw->wiphy, "%s(changed=0x%x vif->addr=%pM)\n",
__func__, changed, vif->addr);
if (changed & BSS_CHANGED_BSSID) {
wiphy_debug(hw->wiphy, "%s: BSSID changed: %pM\n",
@ -1202,6 +1214,7 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
if (changed & BSS_CHANGED_BEACON_ENABLED) {
wiphy_debug(hw->wiphy, " BCN EN: %d\n", info->enable_beacon);
vp->bcn_en = info->enable_beacon;
if (data->started &&
!hrtimer_is_queued(&data->beacon_timer.timer) &&
info->enable_beacon) {
@ -1215,8 +1228,16 @@ static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw,
tasklet_hrtimer_start(&data->beacon_timer,
ns_to_ktime(until_tbtt * 1000),
HRTIMER_MODE_REL);
} else if (!info->enable_beacon)
tasklet_hrtimer_cancel(&data->beacon_timer);
} else if (!info->enable_beacon) {
unsigned int count = 0;
ieee80211_iterate_active_interfaces(
data->hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_bcn_en_iter, &count);
wiphy_debug(hw->wiphy, " beaconing vifs remaining: %u",
count);
if (count == 0)
tasklet_hrtimer_cancel(&data->beacon_timer);
}
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {

20
include/linux/ieee80211.h
View File

@ -696,6 +696,18 @@ struct ieee80211_sec_chan_offs_ie {
u8 sec_chan_offs;
} __packed;
/**
* struct ieee80211_mesh_chansw_params_ie - mesh channel switch parameters IE
*
* This structure represents the "Mesh Channel Switch Paramters element"
*/
struct ieee80211_mesh_chansw_params_ie {
u8 mesh_ttl;
u8 mesh_flags;
__le16 mesh_reason;
__le16 mesh_pre_value;
} __packed;
/**
* struct ieee80211_wide_bw_chansw_ie - wide bandwidth channel switch IE
*/
@ -750,6 +762,14 @@ enum mesh_config_capab_flags {
IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL = 0x40,
};
/**
* mesh channel switch parameters element's flag indicator
*
*/
#define WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT BIT(0)
#define WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR BIT(1)
#define WLAN_EID_CHAN_SWITCH_PARAM_REASON BIT(2)
/**
* struct ieee80211_rann_ie
*

14
include/net/cfg80211.h
View File

@ -744,6 +744,10 @@ enum station_parameters_apply_mask {
* @capability: station capability
* @ext_capab: extended capabilities of the station
* @ext_capab_len: number of extended capabilities
* @supported_channels: supported channels in IEEE 802.11 format
* @supported_channels_len: number of supported channels
* @supported_oper_classes: supported oper classes in IEEE 802.11 format
* @supported_oper_classes_len: number of supported operating classes
*/
struct station_parameters {
const u8 *supported_rates;
@ -763,6 +767,10 @@ struct station_parameters {
u16 capability;
const u8 *ext_capab;
u8 ext_capab_len;
const u8 *supported_channels;
u8 supported_channels_len;
const u8 *supported_oper_classes;
u8 supported_oper_classes_len;
};
/**
@ -1656,6 +1664,9 @@ struct cfg80211_disassoc_request {
* sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is
* required to assume that the port is unauthorized until authorized by
* user space. Otherwise, port is marked authorized by default.
* @userspace_handles_dfs: whether user space controls DFS operation, i.e.
* changes the channel when a radar is detected. This is required
* to operate on DFS channels.
* @basic_rates: bitmap of basic rates to use when creating the IBSS
* @mcast_rate: per-band multicast rate index + 1 (0: disabled)
* @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask
@ -1673,6 +1684,7 @@ struct cfg80211_ibss_params {
bool channel_fixed;
bool privacy;
bool control_port;
bool userspace_handles_dfs;
int mcast_rate[IEEE80211_NUM_BANDS];
struct ieee80211_ht_cap ht_capa;
struct ieee80211_ht_cap ht_capa_mask;
@ -3053,6 +3065,7 @@ struct cfg80211_cached_keys;
* @conn: (private) cfg80211 software SME connection state machine data
* @connect_keys: (private) keys to set after connection is established
* @ibss_fixed: (private) IBSS is using fixed BSSID
* @ibss_dfs_possible: (private) IBSS may change to a DFS channel
* @event_list: (private) list for internal event processing
* @event_lock: (private) lock for event list
*/
@ -3091,6 +3104,7 @@ struct wireless_dev {
struct ieee80211_channel *channel;
bool ibss_fixed;
bool ibss_dfs_possible;
bool ps;
int ps_timeout;

18
include/net/mac80211.h
View File

@ -1503,6 +1503,10 @@ struct ieee80211_tx_control {
* @IEEE80211_HW_TIMING_BEACON_ONLY: Use sync timing from beacon frames
* only, to allow getting TBTT of a DTIM beacon.
*
* @IEEE80211_HW_SUPPORTS_HT_CCK_RATES: Hardware supports mixing HT/CCK rates
* and can cope with CCK rates in an aggregation session (e.g. by not
* using aggregation for such frames.)
*
* @IEEE80211_HW_CHANCTX_STA_CSA: Support 802.11h based channel-switch (CSA)
* for a single active channel while using channel contexts. When support
* is not enabled the default action is to disconnect when getting the
@ -4567,4 +4571,18 @@ void ieee80211_report_wowlan_wakeup(struct ieee80211_vif *vif,
struct cfg80211_wowlan_wakeup *wakeup,
gfp_t gfp);
/**
* ieee80211_tx_prepare_skb - prepare an 802.11 skb for transmission
* @hw: pointer as obtained from ieee80211_alloc_hw()
* @vif: virtual interface
* @skb: frame to be sent from within the driver
* @band: the band to transmit on
* @sta: optional pointer to get the station to send the frame to
*
* Note: must be called under RCU lock
*/
bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, struct sk_buff *skb,
int band, struct ieee80211_sta **sta);
#endif /* MAC80211_H */

27
include/uapi/linux/nl80211.h
View File

@ -988,7 +988,7 @@ enum nl80211_commands {
* to query the CRDA to retrieve one regulatory domain. This attribute can
* also be used by userspace to query the kernel for the currently set
* regulatory domain. We chose an alpha2 as that is also used by the
* IEEE-802.11d country information element to identify a country.
* IEEE-802.11 country information element to identify a country.
* Users can also simply ask the wireless core to set regulatory domain
* to a specific alpha2.
* @NL80211_ATTR_REG_RULES: a nested array of regulatory domain regulatory
@ -1496,6 +1496,18 @@ enum nl80211_commands {
* @NL80211_ATTR_RXMGMT_FLAGS: flags for nl80211_send_mgmt(), u32.
* As specified in the &enum nl80211_rxmgmt_flags.
*
* @NL80211_ATTR_STA_SUPPORTED_CHANNELS: array of supported channels.
*
* @NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES: array of supported
* supported operating classes.
*
* @NL80211_ATTR_HANDLE_DFS: A flag indicating whether user space
* controls DFS operation in IBSS mode. If the flag is included in
* %NL80211_CMD_JOIN_IBSS request, the driver will allow use of DFS
* channels and reports radar events to userspace. Userspace is required
* to react to radar events, e.g. initiate a channel switch or leave the
* IBSS network.
*
* @NL80211_ATTR_MAX: highest attribute number currently defined
* @__NL80211_ATTR_AFTER_LAST: internal use
*/
@ -1806,6 +1818,12 @@ enum nl80211_attrs {
NL80211_ATTR_RXMGMT_FLAGS,
NL80211_ATTR_STA_SUPPORTED_CHANNELS,
NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES,
NL80211_ATTR_HANDLE_DFS,
/* add attributes here, update the policy in nl80211.c */
__NL80211_ATTR_AFTER_LAST,
@ -3860,13 +3878,12 @@ enum nl80211_radar_event {
*
* Channel states used by the DFS code.
*
* @IEEE80211_DFS_USABLE: The channel can be used, but channel availability
* @NL80211_DFS_USABLE: The channel can be used, but channel availability
* check (CAC) must be performed before using it for AP or IBSS.
* @IEEE80211_DFS_UNAVAILABLE: A radar has been detected on this channel, it
* @NL80211_DFS_UNAVAILABLE: A radar has been detected on this channel, it
* is therefore marked as not available.
* @IEEE80211_DFS_AVAILABLE: The channel has been CAC checked and is available.
* @NL80211_DFS_AVAILABLE: The channel has been CAC checked and is available.
*/
enum nl80211_dfs_state {
NL80211_DFS_USABLE,
NL80211_DFS_UNAVAILABLE,

12
net/mac80211/Kconfig
View File

@ -4,6 +4,7 @@ config MAC80211
select CRYPTO
select CRYPTO_ARC4
select CRYPTO_AES
select CRYPTO_CCM
select CRC32
select AVERAGE
---help---
@ -258,6 +259,17 @@ config MAC80211_MESH_SYNC_DEBUG
Do not select this option.
config MAC80211_MESH_CSA_DEBUG
bool "Verbose mesh channel switch debugging"
depends on MAC80211_DEBUG_MENU
depends on MAC80211_MESH
---help---
Selecting this option causes mac80211 to print out very verbose mesh
channel switch debugging messages (when mac80211 is taking part in a
mesh network).
Do not select this option.
config MAC80211_MESH_PS_DEBUG
bool "Verbose mesh powersave debugging"
depends on MAC80211_DEBUG_MENU

161
net/mac80211/aes_ccm.c
View File

@ -2,6 +2,8 @@
* Copyright 2003-2004, Instant802 Networks, Inc.
* Copyright 2005-2006, Devicescape Software, Inc.
*
* Rewrite: Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
@ -17,134 +19,75 @@
#include "key.h"
#include "aes_ccm.h"
static void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *scratch, u8 *a)
void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
u8 *data, size_t data_len, u8 *mic)
{
int i;
u8 *b_0, *aad, *b, *s_0;
struct scatterlist assoc, pt, ct[2];
struct {
struct aead_request req;
u8 priv[crypto_aead_reqsize(tfm)];
} aead_req;
b_0 = scratch + 3 * AES_BLOCK_SIZE;
aad = scratch + 4 * AES_BLOCK_SIZE;
b = scratch;
s_0 = scratch + AES_BLOCK_SIZE;
memset(&aead_req, 0, sizeof(aead_req));
crypto_cipher_encrypt_one(tfm, b, b_0);
sg_init_one(&pt, data, data_len);
sg_init_one(&assoc, &aad[2], be16_to_cpup((__be16 *)aad));
sg_init_table(ct, 2);
sg_set_buf(&ct[0], data, data_len);
sg_set_buf(&ct[1], mic, IEEE80211_CCMP_MIC_LEN);
/* Extra Authenticate-only data (always two AES blocks) */
for (i = 0; i < AES_BLOCK_SIZE; i++)
aad[i] ^= b[i];
crypto_cipher_encrypt_one(tfm, b, aad);
aead_request_set_tfm(&aead_req.req, tfm);
aead_request_set_assoc(&aead_req.req, &assoc, assoc.length);
aead_request_set_crypt(&aead_req.req, &pt, ct, data_len, b_0);
aad += AES_BLOCK_SIZE;
for (i = 0; i < AES_BLOCK_SIZE; i++)
aad[i] ^= b[i];
crypto_cipher_encrypt_one(tfm, a, aad);
/* Mask out bits from auth-only-b_0 */
b_0[0] &= 0x07;
/* S_0 is used to encrypt T (= MIC) */
b_0[14] = 0;
b_0[15] = 0;
crypto_cipher_encrypt_one(tfm, s_0, b_0);
crypto_aead_encrypt(&aead_req.req);
}
void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
u8 *data, size_t data_len,
u8 *cdata, u8 *mic)
int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
u8 *data, size_t data_len, u8 *mic)
{
int i, j, last_len, num_blocks;
u8 *pos, *cpos, *b, *s_0, *e, *b_0;
struct scatterlist assoc, pt, ct[2];
struct {
struct aead_request req;
u8 priv[crypto_aead_reqsize(tfm)];
} aead_req;
b = scratch;
s_0 = scratch + AES_BLOCK_SIZE;
e = scratch + 2 * AES_BLOCK_SIZE;
b_0 = scratch + 3 * AES_BLOCK_SIZE;
memset(&aead_req, 0, sizeof(aead_req));
num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
last_len = data_len % AES_BLOCK_SIZE;
aes_ccm_prepare(tfm, scratch, b);
sg_init_one(&pt, data, data_len);
sg_init_one(&assoc, &aad[2], be16_to_cpup((__be16 *)aad));
sg_init_table(ct, 2);
sg_set_buf(&ct[0], data, data_len);
sg_set_buf(&ct[1], mic, IEEE80211_CCMP_MIC_LEN);
/* Process payload blocks */
pos = data;
cpos = cdata;
for (j = 1; j <= num_blocks; j++) {
int blen = (j == num_blocks && last_len) ?
last_len : AES_BLOCK_SIZE;
aead_request_set_tfm(&aead_req.req, tfm);
aead_request_set_assoc(&aead_req.req, &assoc, assoc.length);
aead_request_set_crypt(&aead_req.req, ct, &pt,
data_len + IEEE80211_CCMP_MIC_LEN, b_0);
/* Authentication followed by encryption */
for (i = 0; i < blen; i++)
b[i] ^= pos[i];
crypto_cipher_encrypt_one(tfm, b, b);
b_0[14] = (j >> 8) & 0xff;
b_0[15] = j & 0xff;
crypto_cipher_encrypt_one(tfm, e, b_0);
for (i = 0; i < blen; i++)
*cpos++ = *pos++ ^ e[i];
}
for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++)
mic[i] = b[i] ^ s_0[i];
return crypto_aead_decrypt(&aead_req.req);
}
int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
u8 *cdata, size_t data_len, u8 *mic, u8 *data)
struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[])
{
int i, j, last_len, num_blocks;
u8 *pos, *cpos, *b, *s_0, *a, *b_0;
struct crypto_aead *tfm;
int err;
b = scratch;
s_0 = scratch + AES_BLOCK_SIZE;
a = scratch + 2 * AES_BLOCK_SIZE;
b_0 = scratch + 3 * AES_BLOCK_SIZE;
tfm = crypto_alloc_aead("ccm(aes)", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return tfm;
num_blocks = DIV_ROUND_UP(data_len, AES_BLOCK_SIZE);
last_len = data_len % AES_BLOCK_SIZE;
aes_ccm_prepare(tfm, scratch, a);
err = crypto_aead_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
if (!err)
err = crypto_aead_setauthsize(tfm, IEEE80211_CCMP_MIC_LEN);
if (!err)
return tfm;
/* Process payload blocks */
cpos = cdata;
pos = data;
for (j = 1; j <= num_blocks; j++) {
int blen = (j == num_blocks && last_len) ?
last_len : AES_BLOCK_SIZE;
/* Decryption followed by authentication */
b_0[14] = (j >> 8) & 0xff;
b_0[15] = j & 0xff;
crypto_cipher_encrypt_one(tfm, b, b_0);
for (i = 0; i < blen; i++) {
*pos = *cpos++ ^ b[i];
a[i] ^= *pos++;
}
crypto_cipher_encrypt_one(tfm, a, a);
}
for (i = 0; i < IEEE80211_CCMP_MIC_LEN; i++) {
if ((mic[i] ^ s_0[i]) != a[i])
return -1;
}
return 0;
crypto_free_aead(tfm);
return ERR_PTR(err);
}
struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[])
void ieee80211_aes_key_free(struct crypto_aead *tfm)
{
struct crypto_cipher *tfm;
tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
if (!IS_ERR(tfm))
crypto_cipher_setkey(tfm, key, WLAN_KEY_LEN_CCMP);
return tfm;
}
void ieee80211_aes_key_free(struct crypto_cipher *tfm)
{
crypto_free_cipher(tfm);
crypto_free_aead(tfm);
}

14
net/mac80211/aes_ccm.h
View File

@ -12,13 +12,11 @@
#include <linux/crypto.h>
struct crypto_cipher *ieee80211_aes_key_setup_encrypt(const u8 key[]);
void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
u8 *data, size_t data_len,
u8 *cdata, u8 *mic);
int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
u8 *cdata, size_t data_len,
u8 *mic, u8 *data);
void ieee80211_aes_key_free(struct crypto_cipher *tfm);
struct crypto_aead *ieee80211_aes_key_setup_encrypt(const u8 key[]);
void ieee80211_aes_ccm_encrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
u8 *data, size_t data_len, u8 *mic);
int ieee80211_aes_ccm_decrypt(struct crypto_aead *tfm, u8 *b_0, u8 *aad,
u8 *data, size_t data_len, u8 *mic);
void ieee80211_aes_key_free(struct crypto_aead *tfm);
#endif /* AES_CCM_H */

142
net/mac80211/cfg.c
View File

@ -1059,6 +1059,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
/* abort any running channel switch */
sdata->vif.csa_active = false;
cancel_work_sync(&sdata->csa_finalize_work);
cancel_work_sync(&sdata->u.ap.request_smps_work);
/* turn off carrier for this interface and dependent VLANs */
list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
@ -1342,8 +1343,8 @@ static int sta_apply_parameters(struct ieee80211_local *local,
sta->plink_state = params->plink_state;
ieee80211_mps_sta_status_update(sta);
changed |=
ieee80211_mps_local_status_update(sdata);
changed |= ieee80211_mps_set_sta_local_pm(sta,
NL80211_MESH_POWER_UNKNOWN);
break;
default:
/* nothing */
@ -1553,6 +1554,20 @@ static int ieee80211_change_station(struct wiphy *wiphy,
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);
@ -2337,8 +2352,92 @@ static int ieee80211_testmode_dump(struct wiphy *wiphy,
}
#endif
int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode)
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;
int i;
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,
"SMSP %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);
for (i = 0; i < STA_HASH_SIZE; i++) {
for (sta = rcu_dereference_protected(sdata->local->sta_hash[i],
lockdep_is_held(&sdata->local->sta_mtx));
sta;
sta = rcu_dereference_protected(sta->hnext,
lockdep_is_held(&sdata->local->sta_mtx))) {
/*
* 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;
@ -2346,6 +2445,9 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
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;
@ -2402,7 +2504,7 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
/* no change, but if automatic follow powersave */
sdata_lock(sdata);
__ieee80211_request_smps(sdata, sdata->u.mgd.req_smps);
__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
sdata_unlock(sdata);
if (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)
@ -2860,7 +2962,7 @@ void ieee80211_csa_finalize_work(struct work_struct *work)
container_of(work, struct ieee80211_sub_if_data,
csa_finalize_work);
struct ieee80211_local *local = sdata->local;
int err, changed;
int err, changed = 0;
if (!ieee80211_sdata_running(sdata))
return;
@ -2892,6 +2994,13 @@ void ieee80211_csa_finalize_work(struct work_struct *work)
case NL80211_IFTYPE_ADHOC:
ieee80211_ibss_finish_csa(sdata);
break;
#ifdef CONFIG_MAC80211_MESH
case NL80211_IFTYPE_MESH_POINT:
err = ieee80211_mesh_finish_csa(sdata);
if (err < 0)
return;
break;
#endif
default:
WARN_ON(1);
return;
@ -2912,6 +3021,7 @@ static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_local *local = sdata->local;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_chanctx *chanctx;
struct ieee80211_if_mesh __maybe_unused *ifmsh;
int err, num_chanctx;
if (!list_empty(&local->roc_list) || local->scanning)
@ -2995,6 +3105,26 @@ static int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
if (err < 0)
return err;
break;
#ifdef CONFIG_MAC80211_MESH
case NL80211_IFTYPE_MESH_POINT:
ifmsh = &sdata->u.mesh;
if (!ifmsh->mesh_id)
return -EINVAL;
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;
err = ieee80211_mesh_csa_beacon(sdata, params, true);
if (err < 0)
return err;
break;
#endif
default:
return -EOPNOTSUPP;
}

10
net/mac80211/debug.h
View File

@ -44,6 +44,12 @@
#define MAC80211_MESH_SYNC_DEBUG 0
#endif
#ifdef CONFIG_MAC80211_MESH_CSA_DEBUG
#define MAC80211_MESH_CSA_DEBUG 1
#else
#define MAC80211_MESH_CSA_DEBUG 0
#endif
#ifdef CONFIG_MAC80211_MESH_PS_DEBUG
#define MAC80211_MESH_PS_DEBUG 1
#else
@ -157,6 +163,10 @@ do { \
_sdata_dbg(MAC80211_MESH_SYNC_DEBUG, \
sdata, fmt, ##__VA_ARGS__)
#define mcsa_dbg(sdata, fmt, ...) \
_sdata_dbg(MAC80211_MESH_CSA_DEBUG, \
sdata, fmt, ##__VA_ARGS__)
#define mps_dbg(sdata, fmt, ...) \
_sdata_dbg(MAC80211_MESH_PS_DEBUG, \
sdata, fmt, ##__VA_ARGS__)

25
net/mac80211/debugfs_netdev.c
View File

@ -224,12 +224,15 @@ static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
smps_mode == IEEE80211_SMPS_AUTOMATIC))
return -EINVAL;
/* supported only on managed interfaces for now */
if (sdata->vif.type != NL80211_IFTYPE_STATION)
if (sdata->vif.type != NL80211_IFTYPE_STATION &&
sdata->vif.type != NL80211_IFTYPE_AP)
return -EOPNOTSUPP;
sdata_lock(sdata);
err = __ieee80211_request_smps(sdata, smps_mode);
if (sdata->vif.type == NL80211_IFTYPE_STATION)
err = __ieee80211_request_smps_mgd(sdata, smps_mode);
else
err = __ieee80211_request_smps_ap(sdata, smps_mode);
sdata_unlock(sdata);
return err;
@ -245,12 +248,15 @@ static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
char *buf, int buflen)
{
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
return snprintf(buf, buflen, "request: %s\nused: %s\n",
smps_modes[sdata->u.mgd.req_smps],
smps_modes[sdata->smps_mode]);
if (sdata->vif.type == NL80211_IFTYPE_STATION)
return snprintf(buf, buflen, "request: %s\nused: %s\n",
smps_modes[sdata->u.mgd.req_smps],
smps_modes[sdata->smps_mode]);
if (sdata->vif.type == NL80211_IFTYPE_AP)
return snprintf(buf, buflen, "request: %s\nused: %s\n",
smps_modes[sdata->u.ap.req_smps],
smps_modes[sdata->smps_mode]);
return -EINVAL;
}
static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
@ -563,6 +569,7 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
static void add_ap_files(struct ieee80211_sub_if_data *sdata)
{
DEBUGFS_ADD(num_mcast_sta);
DEBUGFS_ADD_MODE(smps, 0600);
DEBUGFS_ADD(num_sta_ps);
DEBUGFS_ADD(dtim_count);
DEBUGFS_ADD(num_buffered_multicast);

41
net/mac80211/ht.c
View File

@ -448,14 +448,25 @@ int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
return 0;
}
void ieee80211_request_smps_work(struct work_struct *work)
void ieee80211_request_smps_mgd_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data,
u.mgd.request_smps_work);
sdata_lock(sdata);
__ieee80211_request_smps(sdata, sdata->u.mgd.driver_smps_mode);
__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.driver_smps_mode);
sdata_unlock(sdata);
}
void ieee80211_request_smps_ap_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data,
u.ap.request_smps_work);
sdata_lock(sdata);
__ieee80211_request_smps_ap(sdata, sdata->u.ap.driver_smps_mode);
sdata_unlock(sdata);
}
@ -464,19 +475,29 @@ void ieee80211_request_smps(struct ieee80211_vif *vif,
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
if (WARN_ON_ONCE(vif->type != NL80211_IFTYPE_STATION &&
vif->type != NL80211_IFTYPE_AP))
return;
if (WARN_ON(smps_mode == IEEE80211_SMPS_OFF))
smps_mode = IEEE80211_SMPS_AUTOMATIC;
if (sdata->u.mgd.driver_smps_mode == smps_mode)
return;
sdata->u.mgd.driver_smps_mode = smps_mode;
ieee80211_queue_work(&sdata->local->hw,
&sdata->u.mgd.request_smps_work);
if (vif->type == NL80211_IFTYPE_STATION) {
if (sdata->u.mgd.driver_smps_mode == smps_mode)
return;
sdata->u.mgd.driver_smps_mode = smps_mode;
ieee80211_queue_work(&sdata->local->hw,
&sdata->u.mgd.request_smps_work);
} else {
/* AUTOMATIC is meaningless in AP mode */
if (WARN_ON_ONCE(smps_mode == IEEE80211_SMPS_AUTOMATIC))
return;
if (sdata->u.ap.driver_smps_mode == smps_mode)
return;
sdata->u.ap.driver_smps_mode = smps_mode;
ieee80211_queue_work(&sdata->local->hw,
&sdata->u.ap.request_smps_work);
}
}
/* this might change ... don't want non-open drivers using it */
EXPORT_SYMBOL_GPL(ieee80211_request_smps);

116
net/mac80211/ibss.c
View File

@ -229,6 +229,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
struct beacon_data *presp;
enum nl80211_bss_scan_width scan_width;
bool have_higher_than_11mbit;
bool radar_required = false;
int err;
sdata_assert_lock(sdata);
@ -273,6 +274,23 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
}
chandef.width = NL80211_CHAN_WIDTH_20;
chandef.center_freq1 = chan->center_freq;
/* check again for downgraded chandef */
if (!cfg80211_reg_can_beacon(local->hw.wiphy, &chandef)) {
sdata_info(sdata,
"Failed to join IBSS, beacons forbidden\n");
return;
}
}
err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
&chandef);
if (err > 0) {
if (!ifibss->userspace_handles_dfs) {
sdata_info(sdata,
"Failed to join IBSS, DFS channel without control program\n");
return;
}
radar_required = true;
}
ieee80211_vif_release_channel(sdata);
@ -297,6 +315,7 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
rcu_assign_pointer(ifibss->presp, presp);
mgmt = (void *)presp->head;
sdata->radar_required = radar_required;
sdata->vif.bss_conf.enable_beacon = true;
sdata->vif.bss_conf.beacon_int = beacon_int;
sdata->vif.bss_conf.basic_rates = basic_rates;
@ -445,60 +464,6 @@ static void ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
tsf, false);
}
static int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings)
{
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_local *local = sdata->local;
int freq;
int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
sizeof(mgmt->u.action.u.chan_switch);
u8 *pos;
skb = dev_alloc_skb(local->tx_headroom + hdr_len +
5 + /* channel switch announcement element */
3); /* secondary channel offset element */
if (!skb)
return -1;
skb_reserve(skb, local->tx_headroom);
mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
memset(mgmt, 0, hdr_len);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
eth_broadcast_addr(mgmt->da);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
pos = skb_put(skb, 5);
*pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
*pos++ = 3; /* IE length */
*pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
freq = csa_settings->chandef.chan->center_freq;
*pos++ = ieee80211_frequency_to_channel(freq); /* channel */
*pos++ = csa_settings->count; /* count */
if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
enum nl80211_channel_type ch_type;
skb_put(skb, 3);
*pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
*pos++ = 1; /* IE length */
ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
if (ch_type == NL80211_CHAN_HT40PLUS)
*pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
else
*pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
}
ieee80211_tx_skb(sdata, skb);
return 0;
}
int ieee80211_ibss_csa_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings)
{
@ -796,19 +761,34 @@ static void ieee80211_csa_connection_drop_work(struct work_struct *work)
ieee80211_queue_work(&sdata->local->hw, &sdata->work);
}
static void ieee80211_ibss_csa_mark_radar(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
int err;
/* if the current channel is a DFS channel, mark the channel as
* unavailable.
*/
err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
&ifibss->chandef);
if (err > 0)
cfg80211_radar_event(sdata->local->hw.wiphy, &ifibss->chandef,
GFP_ATOMIC);
}
static bool
ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
bool beacon)
{
struct cfg80211_csa_settings params;
struct ieee80211_csa_ie csa_ie;
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_chanctx *chanctx;
enum nl80211_channel_type ch_type;
int err, num_chanctx;
u32 sta_flags;
u8 mode;
if (sdata->vif.csa_active)
return true;
@ -831,12 +811,10 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
memset(&params, 0, sizeof(params));
memset(&csa_ie, 0, sizeof(csa_ie));
err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon,
ifibss->chandef.chan->band,
sta_flags, ifibss->bssid,
&params.count, &mode,
&params.chandef);
sta_flags, ifibss->bssid, &csa_ie);
/* can't switch to destination channel, fail */
if (err < 0)
goto disconnect;
@ -845,6 +823,9 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
if (err)
return false;
params.count = csa_ie.count;
params.chandef = csa_ie.chandef;
if (ifibss->chandef.chan->band != params.chandef.chan->band)
goto disconnect;
@ -880,8 +861,7 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
goto disconnect;
}
if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, &params.chandef,
IEEE80211_CHAN_DISABLED)) {
if (!cfg80211_reg_can_beacon(sdata->local->hw.wiphy, &params.chandef)) {
sdata_info(sdata,
"IBSS %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
ifibss->bssid,
@ -897,10 +877,11 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
if (err < 0)
goto disconnect;
if (err) {
params.radar_required = true;
/* IBSS-DFS only allowed with a control program */
if (!ifibss->userspace_handles_dfs)
goto disconnect;
/* TODO: IBSS-DFS not (yet) supported, disconnect. */
goto disconnect;
params.radar_required = true;
}
rcu_read_lock();
@ -931,7 +912,7 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
"received channel switch announcement to go to channel %d MHz\n",
params.chandef.chan->center_freq);
params.block_tx = !!mode;
params.block_tx = !!csa_ie.mode;
ieee80211_ibss_csa_beacon(sdata, &params);
sdata->csa_radar_required = params.radar_required;
@ -947,12 +928,16 @@ ieee80211_ibss_process_chanswitch(struct ieee80211_sub_if_data *sdata,
ieee80211_bss_info_change_notify(sdata, err);
drv_channel_switch_beacon(sdata, &params.chandef);
ieee80211_ibss_csa_mark_radar(sdata);
return true;
disconnect:
ibss_dbg(sdata, "Can't handle channel switch, disconnect\n");
ieee80211_queue_work(&sdata->local->hw,
&ifibss->csa_connection_drop_work);
ieee80211_ibss_csa_mark_radar(sdata);
return true;
}
@ -1688,6 +1673,7 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
sdata->u.ibss.privacy = params->privacy;
sdata->u.ibss.control_port = params->control_port;
sdata->u.ibss.userspace_handles_dfs = params->userspace_handles_dfs;
sdata->u.ibss.basic_rates = params->basic_rates;
/* fix basic_rates if channel does not support these rates */

50
net/mac80211/ieee80211_i.h
View File

@ -262,6 +262,10 @@ struct ieee80211_if_ap {
struct ps_data ps;
atomic_t num_mcast_sta; /* number of stations receiving multicast */
enum ieee80211_smps_mode req_smps, /* requested smps mode */
driver_smps_mode; /* smps mode request */
struct work_struct request_smps_work;
};
struct ieee80211_if_wds {
@ -498,6 +502,7 @@ struct ieee80211_if_ibss {
bool privacy;
bool control_port;
bool userspace_handles_dfs;
u8 bssid[ETH_ALEN] __aligned(2);
u8 ssid[IEEE80211_MAX_SSID_LEN];
@ -539,6 +544,11 @@ struct ieee80211_mesh_sync_ops {
/* add other framework functions here */
};
struct mesh_csa_settings {
struct rcu_head rcu_head;
struct cfg80211_csa_settings settings;
};
struct ieee80211_if_mesh {
struct timer_list housekeeping_timer;
struct timer_list mesh_path_timer;
@ -599,6 +609,11 @@ struct ieee80211_if_mesh {
int ps_peers_light_sleep;
int ps_peers_deep_sleep;
struct ps_data ps;
/* Channel Switching Support */
struct mesh_csa_settings __rcu *csa;
bool chsw_init;
u8 chsw_ttl;
u16 pre_value;
};
#ifdef CONFIG_MAC80211_MESH
@ -1207,6 +1222,14 @@ struct ieee80211_ra_tid {
u16 tid;
};
/* this struct holds the value parsing from channel switch IE */
struct ieee80211_csa_ie {
struct cfg80211_chan_def chandef;
u8 mode;
u8 count;
u8 ttl;
};
/* Parsed Information Elements */
struct ieee802_11_elems {
const u8 *ie_start;
@ -1243,6 +1266,7 @@ struct ieee802_11_elems {
const struct ieee80211_timeout_interval_ie *timeout_int;
const u8 *opmode_notif;
const struct ieee80211_sec_chan_offs_ie *sec_chan_offs;
const struct ieee80211_mesh_chansw_params_ie *mesh_chansw_params_ie;
/* length of them, respectively */
u8 ssid_len;
@ -1343,6 +1367,10 @@ void ieee80211_ibss_stop(struct ieee80211_sub_if_data *sdata);
void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata);
void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings,
bool csa_action);
int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata);
/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);
@ -1439,7 +1467,10 @@ void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata,
int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps, const u8 *da,
const u8 *bssid);
void ieee80211_request_smps_work(struct work_struct *work);
void ieee80211_request_smps_ap_work(struct work_struct *work);
void ieee80211_request_smps_mgd_work(struct work_struct *work);
bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
enum ieee80211_smps_mode smps_mode_new);
void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason, bool stop);
@ -1501,17 +1532,16 @@ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata,
* %IEEE80211_STA_DISABLE_HT, %IEEE80211_STA_DISABLE_VHT,
* %IEEE80211_STA_DISABLE_40MHZ, %IEEE80211_STA_DISABLE_80P80MHZ,
* %IEEE80211_STA_DISABLE_160MHZ.
* @count: to be filled with the counter until the switch (on success only)
* @bssid: the currently connected bssid (for reporting)
* @mode: to be filled with CSA mode (on success only)
* @new_chandef: to be filled with destination chandef (on success only)
* @csa_ie: parsed 802.11 csa elements on count, mode, chandef and mesh ttl.
All of them will be filled with if success only.
* Return: 0 on success, <0 on error and >0 if there is nothing to parse.
*/
int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems, bool beacon,
enum ieee80211_band current_band,
u32 sta_flags, u8 *bssid, u8 *count, u8 *mode,
struct cfg80211_chan_def *new_chandef);
u32 sta_flags, u8 *bssid,
struct ieee80211_csa_ie *csa_ie);
/* Suspend/resume and hw reconfiguration */
int ieee80211_reconfig(struct ieee80211_local *local);
@ -1657,8 +1687,10 @@ void ieee80211_send_probe_req(struct ieee80211_sub_if_data *sdata, u8 *dst,
u32 ieee80211_sta_get_rates(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems,
enum ieee80211_band band, u32 *basic_rates);
int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode);
void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata);
size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
@ -1714,6 +1746,8 @@ void ieee80211_dfs_cac_timer(unsigned long data);
void ieee80211_dfs_cac_timer_work(struct work_struct *work);
void ieee80211_dfs_cac_cancel(struct ieee80211_local *local);
void ieee80211_dfs_radar_detected_work(struct work_struct *work);
int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline

3
net/mac80211/iface.c
View File

@ -1293,7 +1293,10 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
case NL80211_IFTYPE_AP:
skb_queue_head_init(&sdata->u.ap.ps.bc_buf);
INIT_LIST_HEAD(&sdata->u.ap.vlans);
INIT_WORK(&sdata->u.ap.request_smps_work,
ieee80211_request_smps_ap_work);
sdata->vif.bss_conf.bssid = sdata->vif.addr;
sdata->u.ap.req_smps = IEEE80211_SMPS_OFF;
break;
case NL80211_IFTYPE_P2P_CLIENT:
type = NL80211_IFTYPE_STATION;

2
net/mac80211/key.h
View File

@ -83,7 +83,7 @@ struct ieee80211_key {
* Management frames.
*/
u8 rx_pn[IEEE80211_NUM_TIDS + 1][IEEE80211_CCMP_PN_LEN];
struct crypto_cipher *tfm;
struct crypto_aead *tfm;
u32 replays; /* dot11RSNAStatsCCMPReplays */
} ccmp;
struct {

302
net/mac80211/mesh.c
View File

@ -12,6 +12,7 @@
#include <asm/unaligned.h>
#include "ieee80211_i.h"
#include "mesh.h"
#include "driver-ops.h"
static int mesh_allocated;
static struct kmem_cache *rm_cache;
@ -610,6 +611,7 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
struct ieee80211_chanctx_conf *chanctx_conf;
struct mesh_csa_settings *csa;
enum ieee80211_band band;
u8 *pos;
struct ieee80211_sub_if_data *sdata;
@ -624,6 +626,10 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)
head_len = hdr_len +
2 + /* NULL SSID */
/* Channel Switch Announcement */
2 + sizeof(struct ieee80211_channel_sw_ie) +
/* Mesh Channel Swith Parameters */
2 + sizeof(struct ieee80211_mesh_chansw_params_ie) +
2 + 8 + /* supported rates */
2 + 3; /* DS params */
tail_len = 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
@ -665,6 +671,38 @@ ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)
*pos++ = WLAN_EID_SSID;
*pos++ = 0x0;
rcu_read_lock();
csa = rcu_dereference(ifmsh->csa);
if (csa) {
__le16 pre_value;
pos = skb_put(skb, 13);
memset(pos, 0, 13);
*pos++ = WLAN_EID_CHANNEL_SWITCH;
*pos++ = 3;
*pos++ = 0x0;
*pos++ = ieee80211_frequency_to_channel(
csa->settings.chandef.chan->center_freq);
sdata->csa_counter_offset_beacon = hdr_len + 6;
*pos++ = csa->settings.count;
*pos++ = WLAN_EID_CHAN_SWITCH_PARAM;
*pos++ = 6;
if (ifmsh->chsw_init) {
*pos++ = ifmsh->mshcfg.dot11MeshTTL;
*pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
} else {
*pos++ = ifmsh->chsw_ttl;
}
*pos++ |= csa->settings.block_tx ?
WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos);
pos += 2;
pre_value = cpu_to_le16(ifmsh->pre_value);
memcpy(pos, &pre_value, 2);
pos += 2;
}
rcu_read_unlock();
if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
mesh_add_ds_params_ie(sdata, skb))
goto out_free;
@ -812,6 +850,127 @@ void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
ieee80211_configure_filter(local);
}
static bool
ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems, bool beacon)
{
struct cfg80211_csa_settings params;
struct ieee80211_csa_ie csa_ie;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_chanctx *chanctx;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
int err, num_chanctx;
u32 sta_flags;
if (sdata->vif.csa_active)
return true;
if (!ifmsh->mesh_id)
return false;
sta_flags = IEEE80211_STA_DISABLE_VHT;
switch (sdata->vif.bss_conf.chandef.width) {
case NL80211_CHAN_WIDTH_20_NOHT:
sta_flags |= IEEE80211_STA_DISABLE_HT;
case NL80211_CHAN_WIDTH_20:
sta_flags |= IEEE80211_STA_DISABLE_40MHZ;
break;
default:
break;
}
memset(&params, 0, sizeof(params));
memset(&csa_ie, 0, sizeof(csa_ie));
err = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, band,
sta_flags, sdata->vif.addr,
&csa_ie);
if (err < 0)
return false;
if (err)
return false;
params.chandef = csa_ie.chandef;
params.count = csa_ie.count;
if (sdata->vif.bss_conf.chandef.chan->band !=
params.chandef.chan->band)
return false;
if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, &params.chandef,
IEEE80211_CHAN_DISABLED)) {
sdata_info(sdata,
"mesh STA %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n",
sdata->vif.addr,
params.chandef.chan->center_freq,
params.chandef.width,
params.chandef.center_freq1,
params.chandef.center_freq2);
return false;
}
err = cfg80211_chandef_dfs_required(sdata->local->hw.wiphy,
&params.chandef);
if (err < 0)
return false;
if (err) {
params.radar_required = true;
/* TODO: DFS not (yet) supported */
return false;
}
rcu_read_lock();
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
if (!chanctx_conf)
goto failed_chswitch;
/* don't handle for multi-VIF cases */
chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf);
if (chanctx->refcount > 1)
goto failed_chswitch;
num_chanctx = 0;
list_for_each_entry_rcu(chanctx, &sdata->local->chanctx_list, list)
num_chanctx++;
if (num_chanctx > 1)
goto failed_chswitch;
rcu_read_unlock();
mcsa_dbg(sdata,
"received channel switch announcement to go to channel %d MHz\n",
params.chandef.chan->center_freq);
params.block_tx = csa_ie.mode & WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT;
if (beacon)
ifmsh->chsw_ttl = csa_ie.ttl - 1;
else
ifmsh->chsw_ttl = 0;
if (ifmsh->chsw_ttl > 0)
if (ieee80211_mesh_csa_beacon(sdata, &params, false) < 0)
return false;
sdata->csa_radar_required = params.radar_required;
if (params.block_tx)
ieee80211_stop_queues_by_reason(&sdata->local->hw,
IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_CSA);
sdata->local->csa_chandef = params.chandef;
sdata->vif.csa_active = true;
ieee80211_bss_info_change_notify(sdata, err);
drv_channel_switch_beacon(sdata, &params.chandef);
return true;
failed_chswitch:
rcu_read_unlock();
return false;
}
static void
ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len)
@ -918,6 +1077,142 @@ static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
if (ifmsh->sync_ops)
ifmsh->sync_ops->rx_bcn_presp(sdata,
stype, mgmt, &elems, rx_status);
if (!ifmsh->chsw_init)
ieee80211_mesh_process_chnswitch(sdata, &elems, true);
}
int ieee80211_mesh_finish_csa(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_csa_settings *tmp_csa_settings;
int ret = 0;
/* Reset the TTL value and Initiator flag */
ifmsh->chsw_init = false;
ifmsh->chsw_ttl = 0;
/* Remove the CSA and MCSP elements from the beacon */
tmp_csa_settings = rcu_dereference(ifmsh->csa);
rcu_assign_pointer(ifmsh->csa, NULL);
kfree_rcu(tmp_csa_settings, rcu_head);
ret = ieee80211_mesh_rebuild_beacon(sdata);
if (ret)
return -EINVAL;
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
mcsa_dbg(sdata, "complete switching to center freq %d MHz",
sdata->vif.bss_conf.chandef.chan->center_freq);
return 0;
}
int ieee80211_mesh_csa_beacon(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings,
bool csa_action)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_csa_settings *tmp_csa_settings;
int ret = 0;
tmp_csa_settings = kmalloc(sizeof(*tmp_csa_settings),
GFP_ATOMIC);
if (!tmp_csa_settings)
return -ENOMEM;
memcpy(&tmp_csa_settings->settings, csa_settings,
sizeof(struct cfg80211_csa_settings));
rcu_assign_pointer(ifmsh->csa, tmp_csa_settings);
ret = ieee80211_mesh_rebuild_beacon(sdata);
if (ret) {
tmp_csa_settings = rcu_dereference(ifmsh->csa);
rcu_assign_pointer(ifmsh->csa, NULL);
kfree_rcu(tmp_csa_settings, rcu_head);
return ret;
}
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
if (csa_action)
ieee80211_send_action_csa(sdata, csa_settings);
return 0;
}
static int mesh_fwd_csa_frame(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len)
{
struct ieee80211_mgmt *mgmt_fwd;
struct sk_buff *skb;
struct ieee80211_local *local = sdata->local;
u8 *pos = mgmt->u.action.u.chan_switch.variable;
size_t offset_ttl;
skb = dev_alloc_skb(local->tx_headroom + len);
if (!skb)
return -ENOMEM;
skb_reserve(skb, local->tx_headroom);
mgmt_fwd = (struct ieee80211_mgmt *) skb_put(skb, len);
/* offset_ttl is based on whether the secondary channel
* offset is available or not. Substract 1 from the mesh TTL
* and disable the initiator flag before forwarding.
*/
offset_ttl = (len < 42) ? 7 : 10;
*(pos + offset_ttl) -= 1;
*(pos + offset_ttl + 1) &= ~WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
sdata->u.mesh.chsw_ttl = *(pos + offset_ttl);
memcpy(mgmt_fwd, mgmt, len);
eth_broadcast_addr(mgmt_fwd->da);
memcpy(mgmt_fwd->sa, sdata->vif.addr, ETH_ALEN);
memcpy(mgmt_fwd->bssid, sdata->vif.addr, ETH_ALEN);
ieee80211_tx_skb(sdata, skb);
return 0;
}
static void mesh_rx_csa_frame(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee802_11_elems elems;
u16 pre_value;
bool fwd_csa = true;
size_t baselen;
u8 *pos, ttl;
if (mgmt->u.action.u.measurement.action_code !=
WLAN_ACTION_SPCT_CHL_SWITCH)
return;
pos = mgmt->u.action.u.chan_switch.variable;
baselen = offsetof(struct ieee80211_mgmt,
u.action.u.chan_switch.variable);
ieee802_11_parse_elems(pos, len - baselen, false, &elems);
ttl = elems.mesh_chansw_params_ie->mesh_ttl;
if (!--ttl)
fwd_csa = false;
pre_value = le16_to_cpu(elems.mesh_chansw_params_ie->mesh_pre_value);
if (ifmsh->pre_value >= pre_value)
return;
ifmsh->pre_value = pre_value;
if (!ieee80211_mesh_process_chnswitch(sdata, &elems, false)) {
mcsa_dbg(sdata, "Failed to process CSA action frame");
return;
}
/* forward or re-broadcast the CSA frame */
if (fwd_csa) {
if (mesh_fwd_csa_frame(sdata, mgmt, len) < 0)
mcsa_dbg(sdata, "Failed to forward the CSA frame");
}
}
static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
@ -939,6 +1234,9 @@ static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
if (mesh_action_is_path_sel(mgmt))
mesh_rx_path_sel_frame(sdata, mgmt, len);
break;
case WLAN_CATEGORY_SPECTRUM_MGMT:
mesh_rx_csa_frame(sdata, mgmt, len);
break;
}
}
@ -1056,13 +1354,11 @@ void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
(unsigned long) sdata);
ifmsh->accepting_plinks = true;
ifmsh->preq_id = 0;
ifmsh->sn = 0;
ifmsh->num_gates = 0;
atomic_set(&ifmsh->mpaths, 0);
mesh_rmc_init(sdata);
ifmsh->last_preq = jiffies;
ifmsh->next_perr = jiffies;
ifmsh->chsw_init = false;
/* Allocate all mesh structures when creating the first mesh interface. */
if (!mesh_allocated)
ieee80211s_init();

3
net/mac80211/mesh_plink.c
View File

@ -222,7 +222,8 @@ static u32 __mesh_plink_deactivate(struct sta_info *sta)
mesh_path_flush_by_nexthop(sta);
ieee80211_mps_sta_status_update(sta);
changed |= ieee80211_mps_local_status_update(sdata);
changed |= ieee80211_mps_set_sta_local_pm(sta,
NL80211_MESH_POWER_UNKNOWN);
return changed;
}

33
net/mac80211/mesh_ps.c
View File

@ -152,6 +152,9 @@ u32 ieee80211_mps_set_sta_local_pm(struct sta_info *sta,
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
if (sta->local_pm == pm)
return 0;
mps_dbg(sdata, "local STA operates in mode %d with %pM\n",
pm, sta->sta.addr);
@ -245,6 +248,14 @@ void ieee80211_mps_sta_status_update(struct sta_info *sta)
do_buffer = (pm != NL80211_MESH_POWER_ACTIVE);
/* clear the MPSP flags for non-peers or active STA */
if (sta->plink_state != NL80211_PLINK_ESTAB) {
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
clear_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
} else if (!do_buffer) {
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
}
/* Don't let the same PS state be set twice */
if (test_sta_flag(sta, WLAN_STA_PS_STA) == do_buffer)
return;
@ -257,14 +268,6 @@ void ieee80211_mps_sta_status_update(struct sta_info *sta)
} else {
ieee80211_sta_ps_deliver_wakeup(sta);
}
/* clear the MPSP flags for non-peers or active STA */
if (sta->plink_state != NL80211_PLINK_ESTAB) {
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
clear_sta_flag(sta, WLAN_STA_MPSP_RECIPIENT);
} else if (!do_buffer) {
clear_sta_flag(sta, WLAN_STA_MPSP_OWNER);
}
}
static void mps_set_sta_peer_pm(struct sta_info *sta,
@ -444,8 +447,7 @@ static void mpsp_qos_null_append(struct sta_info *sta,
*/
static void mps_frame_deliver(struct sta_info *sta, int n_frames)
{
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
struct ieee80211_local *local = sta->sdata->local;
int ac;
struct sk_buff_head frames;
struct sk_buff *skb;
@ -558,10 +560,10 @@ void ieee80211_mpsp_trigger_process(u8 *qc, struct sta_info *sta,
}
/**
* ieee80211_mps_frame_release - release buffered frames in response to beacon
* ieee80211_mps_frame_release - release frames buffered due to mesh power save
*
* @sta: mesh STA
* @elems: beacon IEs
* @elems: IEs of beacon or probe response
*
* For peers if we have individually-addressed frames buffered or the peer
* indicates buffered frames, send a corresponding MPSP trigger frame. Since
@ -588,9 +590,10 @@ void ieee80211_mps_frame_release(struct sta_info *sta,
(!elems->awake_window || !le16_to_cpu(*elems->awake_window)))
return;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
buffer_local += skb_queue_len(&sta->ps_tx_buf[ac]) +
skb_queue_len(&sta->tx_filtered[ac]);
if (!test_sta_flag(sta, WLAN_STA_MPSP_OWNER))
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
buffer_local += skb_queue_len(&sta->ps_tx_buf[ac]) +
skb_queue_len(&sta->tx_filtered[ac]);
if (!has_buffered && !buffer_local)
return;

32
net/mac80211/mlme.c
View File

@ -958,9 +958,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct cfg80211_bss *cbss = ifmgd->associated;
struct ieee80211_chanctx *chanctx;
enum ieee80211_band current_band;
u8 count;
u8 mode;
struct cfg80211_chan_def new_chandef = {};
struct ieee80211_csa_ie csa_ie;
int res;
sdata_assert_lock(sdata);
@ -976,24 +974,24 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
return;
current_band = cbss->channel->band;
memset(&csa_ie, 0, sizeof(csa_ie));
res = ieee80211_parse_ch_switch_ie(sdata, elems, beacon, current_band,
ifmgd->flags,
ifmgd->associated->bssid, &count,
&mode, &new_chandef);
ifmgd->associated->bssid, &csa_ie);
if (res < 0)
ieee80211_queue_work(&local->hw,
&ifmgd->csa_connection_drop_work);
if (res)
return;
if (!cfg80211_chandef_usable(local->hw.wiphy, &new_chandef,
if (!cfg80211_chandef_usable(local->hw.wiphy, &csa_ie.chandef,
IEEE80211_CHAN_DISABLED)) {
sdata_info(sdata,
"AP %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), disconnecting\n",
ifmgd->associated->bssid,
new_chandef.chan->center_freq,
new_chandef.width, new_chandef.center_freq1,
new_chandef.center_freq2);
csa_ie.chandef.chan->center_freq,
csa_ie.chandef.width, csa_ie.chandef.center_freq1,
csa_ie.chandef.center_freq2);
ieee80211_queue_work(&local->hw,
&ifmgd->csa_connection_drop_work);
return;
@ -1037,9 +1035,9 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
mutex_unlock(&local->chanctx_mtx);
local->csa_chandef = new_chandef;
local->csa_chandef = csa_ie.chandef;
if (mode)
if (csa_ie.mode)
ieee80211_stop_queues_by_reason(&local->hw,
IEEE80211_MAX_QUEUE_MAP,
IEEE80211_QUEUE_STOP_REASON_CSA);
@ -1048,9 +1046,9 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
/* use driver's channel switch callback */
struct ieee80211_channel_switch ch_switch = {
.timestamp = timestamp,
.block_tx = mode,
.chandef = new_chandef,
.count = count,
.block_tx = csa_ie.mode,
.chandef = csa_ie.chandef,
.count = csa_ie.count,
};
drv_channel_switch(local, &ch_switch);
@ -1058,11 +1056,11 @@ ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
}
/* channel switch handled in software */
if (count <= 1)
if (csa_ie.count <= 1)
ieee80211_queue_work(&local->hw, &ifmgd->chswitch_work);
else
mod_timer(&ifmgd->chswitch_timer,
TU_TO_EXP_TIME(count * cbss->beacon_interval));
TU_TO_EXP_TIME(csa_ie.count * cbss->beacon_interval));
}
static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
@ -3500,7 +3498,7 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
ieee80211_beacon_connection_loss_work);
INIT_WORK(&ifmgd->csa_connection_drop_work,
ieee80211_csa_connection_drop_work);
INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work);
INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_mgd_work);
setup_timer(&ifmgd->timer, ieee80211_sta_timer,
(unsigned long) sdata);
setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,

5
net/mac80211/rx.c
View File

@ -2593,13 +2593,16 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
break;
if (sdata->vif.type != NL80211_IFTYPE_STATION &&
sdata->vif.type != NL80211_IFTYPE_ADHOC)
sdata->vif.type != NL80211_IFTYPE_ADHOC &&
sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
break;
if (sdata->vif.type == NL80211_IFTYPE_STATION)
bssid = sdata->u.mgd.bssid;
else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
bssid = sdata->u.ibss.bssid;
else if (sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
bssid = mgmt->sa;
else
break;

33
net/mac80211/spectmgmt.c
View File

@ -24,8 +24,8 @@
int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
struct ieee802_11_elems *elems, bool beacon,
enum ieee80211_band current_band,
u32 sta_flags, u8 *bssid, u8 *count, u8 *mode,
struct cfg80211_chan_def *new_chandef)
u32 sta_flags, u8 *bssid,
struct ieee80211_csa_ie *csa_ie)
{
enum ieee80211_band new_band;
int new_freq;
@ -62,18 +62,24 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
return -EINVAL;
}
new_chan_no = elems->ext_chansw_ie->new_ch_num;
*count = elems->ext_chansw_ie->count;
*mode = elems->ext_chansw_ie->mode;
csa_ie->count = elems->ext_chansw_ie->count;
csa_ie->mode = elems->ext_chansw_ie->mode;
} else if (elems->ch_switch_ie) {
new_band = current_band;
new_chan_no = elems->ch_switch_ie->new_ch_num;
*count = elems->ch_switch_ie->count;
*mode = elems->ch_switch_ie->mode;
csa_ie->count = elems->ch_switch_ie->count;
csa_ie->mode = elems->ch_switch_ie->mode;
} else {
/* nothing here we understand */
return 1;
}
/* Mesh Channel Switch Parameters Element */
if (elems->mesh_chansw_params_ie) {
csa_ie->ttl = elems->mesh_chansw_params_ie->mesh_ttl;
csa_ie->mode = elems->mesh_chansw_params_ie->mesh_flags;
}
new_freq = ieee80211_channel_to_frequency(new_chan_no, new_band);
new_chan = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
if (!new_chan || new_chan->flags & IEEE80211_CHAN_DISABLED) {
@ -103,25 +109,26 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
default:
/* secondary_channel_offset was present but is invalid */
case IEEE80211_HT_PARAM_CHA_SEC_NONE:
cfg80211_chandef_create(new_chandef, new_chan,
cfg80211_chandef_create(&csa_ie->chandef, new_chan,
NL80211_CHAN_HT20);
break;
case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
cfg80211_chandef_create(new_chandef, new_chan,
cfg80211_chandef_create(&csa_ie->chandef, new_chan,
NL80211_CHAN_HT40PLUS);
break;
case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
cfg80211_chandef_create(new_chandef, new_chan,
cfg80211_chandef_create(&csa_ie->chandef, new_chan,
NL80211_CHAN_HT40MINUS);
break;
case -1:
cfg80211_chandef_create(new_chandef, new_chan,
cfg80211_chandef_create(&csa_ie->chandef, new_chan,
NL80211_CHAN_NO_HT);
/* keep width for 5/10 MHz channels */
switch (sdata->vif.bss_conf.chandef.width) {
case NL80211_CHAN_WIDTH_5:
case NL80211_CHAN_WIDTH_10:
new_chandef->width = sdata->vif.bss_conf.chandef.width;
csa_ie->chandef.width =
sdata->vif.bss_conf.chandef.width;
break;
default:
break;
@ -171,13 +178,13 @@ int ieee80211_parse_ch_switch_ie(struct ieee80211_sub_if_data *sdata,
/* if VHT data is there validate & use it */
if (new_vht_chandef.chan) {
if (!cfg80211_chandef_compatible(&new_vht_chandef,
new_chandef)) {
&csa_ie->chandef)) {
sdata_info(sdata,
"BSS %pM: CSA has inconsistent channel data, disconnecting\n",
bssid);
return -EINVAL;
}
*new_chandef = new_vht_chandef;
csa_ie->chandef = new_vht_chandef;
}
return 0;

72
net/mac80211/sta_info.c
View File

@ -385,6 +385,30 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX);
sta->sta.smps_mode = IEEE80211_SMPS_OFF;
if (sdata->vif.type == NL80211_IFTYPE_AP ||
sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
struct ieee80211_supported_band *sband =
local->hw.wiphy->bands[ieee80211_get_sdata_band(sdata)];
u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >>
IEEE80211_HT_CAP_SM_PS_SHIFT;
/*
* Assume that hostapd advertises our caps in the beacon and
* this is the known_smps_mode for a station that just assciated
*/
switch (smps) {
case WLAN_HT_SMPS_CONTROL_DISABLED:
sta->known_smps_mode = IEEE80211_SMPS_OFF;
break;
case WLAN_HT_SMPS_CONTROL_STATIC:
sta->known_smps_mode = IEEE80211_SMPS_STATIC;
break;
case WLAN_HT_SMPS_CONTROL_DYNAMIC:
sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC;
break;
default:
WARN_ON(1);
}
}
sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr);
@ -1069,6 +1093,19 @@ void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
ieee80211_add_pending_skbs_fn(local, &pending, clear_sta_ps_flags, sta);
/* This station just woke up and isn't aware of our SMPS state */
if (!ieee80211_smps_is_restrictive(sta->known_smps_mode,
sdata->smps_mode) &&
sta->known_smps_mode != sdata->bss->req_smps &&
sta_info_tx_streams(sta) != 1) {
ht_dbg(sdata,
"%pM just woke up and MIMO capable - update SMPS\n",
sta->sta.addr);
ieee80211_send_smps_action(sdata, sdata->bss->req_smps,
sta->sta.addr,
sdata->vif.bss_conf.bssid);
}
local->total_ps_buffered -= buffered;
sta_info_recalc_tim(sta);
@ -1520,3 +1557,38 @@ int sta_info_move_state(struct sta_info *sta,
return 0;
}
u8 sta_info_tx_streams(struct sta_info *sta)
{
struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap;
u8 rx_streams;
if (!sta->sta.ht_cap.ht_supported)
return 1;
if (sta->sta.vht_cap.vht_supported) {
int i;
u16 tx_mcs_map =
le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map);
for (i = 7; i >= 0; i--)
if ((tx_mcs_map & (0x3 << (i * 2))) !=
IEEE80211_VHT_MCS_NOT_SUPPORTED)
return i + 1;
}
if (ht_cap->mcs.rx_mask[3])
rx_streams = 4;
else if (ht_cap->mcs.rx_mask[2])
rx_streams = 3;
else if (ht_cap->mcs.rx_mask[1])
rx_streams = 2;
else
rx_streams = 1;
if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF))
return rx_streams;
return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1;
}

5
net/mac80211/sta_info.h
View File

@ -301,6 +301,8 @@ struct sta_ampdu_mlme {
* @chains: chains ever used for RX from this station
* @chain_signal_last: last signal (per chain)
* @chain_signal_avg: signal average (per chain)
* @known_smps_mode: the smps_mode the client thinks we are in. Relevant for
* AP only.
*/
struct sta_info {
/* General information, mostly static */
@ -411,6 +413,8 @@ struct sta_info {
unsigned int lost_packets;
unsigned int beacon_loss_count;
enum ieee80211_smps_mode known_smps_mode;
/* keep last! */
struct ieee80211_sta sta;
};
@ -613,6 +617,7 @@ void sta_set_rate_info_rx(struct sta_info *sta,
struct rate_info *rinfo);
void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
unsigned long exp_time);
u8 sta_info_tx_streams(struct sta_info *sta);
void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta);
void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta);

31
net/mac80211/status.c
View File

@ -194,29 +194,36 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb)
if (ieee80211_is_action(mgmt->frame_control) &&
mgmt->u.action.category == WLAN_CATEGORY_HT &&
mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS &&
sdata->vif.type == NL80211_IFTYPE_STATION &&
ieee80211_sdata_running(sdata)) {
/*
* This update looks racy, but isn't -- if we come
* here we've definitely got a station that we're
* talking to, and on a managed interface that can
* only be the AP. And the only other place updating
* this variable in managed mode is before association.
*/
enum ieee80211_smps_mode smps_mode;
switch (mgmt->u.action.u.ht_smps.smps_control) {
case WLAN_HT_SMPS_CONTROL_DYNAMIC:
sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
smps_mode = IEEE80211_SMPS_DYNAMIC;
break;
case WLAN_HT_SMPS_CONTROL_STATIC:
sdata->smps_mode = IEEE80211_SMPS_STATIC;
smps_mode = IEEE80211_SMPS_STATIC;
break;
case WLAN_HT_SMPS_CONTROL_DISABLED:
default: /* shouldn't happen since we don't send that */
sdata->smps_mode = IEEE80211_SMPS_OFF;
smps_mode = IEEE80211_SMPS_OFF;
break;
}
ieee80211_queue_work(&local->hw, &sdata->recalc_smps);
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
/*
* This update looks racy, but isn't -- if we come
* here we've definitely got a station that we're
* talking to, and on a managed interface that can
* only be the AP. And the only other place updating
* this variable in managed mode is before association.
*/
sdata->smps_mode = smps_mode;
ieee80211_queue_work(&local->hw, &sdata->recalc_smps);
} else if (sdata->vif.type == NL80211_IFTYPE_AP ||
sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
sta->known_smps_mode = smps_mode;
}
}
}

45
net/mac80211/tx.c
View File

@ -1367,6 +1367,35 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
return 0;
}
bool ieee80211_tx_prepare_skb(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, struct sk_buff *skb,
int band, struct ieee80211_sta **sta)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_data tx;
if (ieee80211_tx_prepare(sdata, &tx, skb) == TX_DROP)
return false;
info->band = band;
info->control.vif = vif;
info->hw_queue = vif->hw_queue[skb_get_queue_mapping(skb)];
if (invoke_tx_handlers(&tx))
return false;
if (sta) {
if (tx.sta)
*sta = &tx.sta->sta;
else
*sta = NULL;
}
return true;
}
EXPORT_SYMBOL(ieee80211_tx_prepare_skb);
/*
* Returns false if the frame couldn't be transmitted but was queued instead.
*/
@ -2370,6 +2399,10 @@ static void ieee80211_update_csa(struct ieee80211_sub_if_data *sdata,
beacon_data = beacon->head;
beacon_data_len = beacon->head_len;
break;
case NL80211_IFTYPE_MESH_POINT:
beacon_data = beacon->head;
beacon_data_len = beacon->head_len;
break;
default:
return;
}
@ -2424,6 +2457,15 @@ bool ieee80211_csa_is_complete(struct ieee80211_vif *vif)
if (!beacon)
goto out;
beacon_data = beacon->head;
beacon_data_len = beacon->head_len;
} else if (vif->type == NL80211_IFTYPE_MESH_POINT) {
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
beacon = rcu_dereference(ifmsh->beacon);
if (!beacon)
goto out;
beacon_data = beacon->head;
beacon_data_len = beacon->head_len;
} else {
@ -2531,6 +2573,9 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
if (!bcn)
goto out;
if (sdata->vif.csa_active)
ieee80211_update_csa(sdata, bcn);
if (ifmsh->sync_ops)
ifmsh->sync_ops->adjust_tbtt(
sdata);

124
net/mac80211/util.c
View File

@ -300,9 +300,6 @@ void ieee80211_propagate_queue_wake(struct ieee80211_local *local, int queue)
if (!sdata->dev)
continue;
if (test_bit(SDATA_STATE_OFFCHANNEL, &sdata->state))
continue;
if (sdata->vif.cab_queue != IEEE80211_INVAL_HW_QUEUE &&
local->queue_stop_reasons[sdata->vif.cab_queue] != 0)
continue;
@ -743,6 +740,7 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
case WLAN_EID_TIMEOUT_INTERVAL:
case WLAN_EID_SECONDARY_CHANNEL_OFFSET:
case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
case WLAN_EID_CHAN_SWITCH_PARAM:
/*
* not listing WLAN_EID_CHANNEL_SWITCH_WRAPPER -- it seems possible
* that if the content gets bigger it might be needed more than once
@ -908,6 +906,14 @@ u32 ieee802_11_parse_elems_crc(const u8 *start, size_t len, bool action,
}
elems->sec_chan_offs = (void *)pos;
break;
case WLAN_EID_CHAN_SWITCH_PARAM:
if (elen !=
sizeof(*elems->mesh_chansw_params_ie)) {
elem_parse_failed = true;
break;
}
elems->mesh_chansw_params_ie = (void *)pos;
break;
case WLAN_EID_WIDE_BW_CHANNEL_SWITCH:
if (!action ||
elen != sizeof(*elems->wide_bw_chansw_ie)) {
@ -2354,3 +2360,115 @@ u32 ieee80211_chandef_downgrade(struct cfg80211_chan_def *c)
return ret;
}
/*
* Returns true if smps_mode_new is strictly more restrictive than
* smps_mode_old.
*/
bool ieee80211_smps_is_restrictive(enum ieee80211_smps_mode smps_mode_old,
enum ieee80211_smps_mode smps_mode_new)
{
if (WARN_ON_ONCE(smps_mode_old == IEEE80211_SMPS_AUTOMATIC ||
smps_mode_new == IEEE80211_SMPS_AUTOMATIC))
return false;
switch (smps_mode_old) {
case IEEE80211_SMPS_STATIC:
return false;
case IEEE80211_SMPS_DYNAMIC:
return smps_mode_new == IEEE80211_SMPS_STATIC;
case IEEE80211_SMPS_OFF:
return smps_mode_new != IEEE80211_SMPS_OFF;
default:
WARN_ON(1);
}
return false;
}
int ieee80211_send_action_csa(struct ieee80211_sub_if_data *sdata,
struct cfg80211_csa_settings *csa_settings)
{
struct sk_buff *skb;
struct ieee80211_mgmt *mgmt;
struct ieee80211_local *local = sdata->local;
int freq;
int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.chan_switch) +
sizeof(mgmt->u.action.u.chan_switch);
u8 *pos;
if (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
sdata->vif.type != NL80211_IFTYPE_MESH_POINT)
return -EOPNOTSUPP;
skb = dev_alloc_skb(local->tx_headroom + hdr_len +
5 + /* channel switch announcement element */
3 + /* secondary channel offset element */
8); /* mesh channel switch parameters element */
if (!skb)
return -ENOMEM;
skb_reserve(skb, local->tx_headroom);
mgmt = (struct ieee80211_mgmt *)skb_put(skb, hdr_len);
memset(mgmt, 0, hdr_len);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
eth_broadcast_addr(mgmt->da);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
if (ieee80211_vif_is_mesh(&sdata->vif)) {
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
} else {
struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
memcpy(mgmt->bssid, ifibss->bssid, ETH_ALEN);
}
mgmt->u.action.category = WLAN_CATEGORY_SPECTRUM_MGMT;
mgmt->u.action.u.chan_switch.action_code = WLAN_ACTION_SPCT_CHL_SWITCH;
pos = skb_put(skb, 5);
*pos++ = WLAN_EID_CHANNEL_SWITCH; /* EID */
*pos++ = 3; /* IE length */
*pos++ = csa_settings->block_tx ? 1 : 0; /* CSA mode */
freq = csa_settings->chandef.chan->center_freq;
*pos++ = ieee80211_frequency_to_channel(freq); /* channel */
*pos++ = csa_settings->count; /* count */
if (csa_settings->chandef.width == NL80211_CHAN_WIDTH_40) {
enum nl80211_channel_type ch_type;
skb_put(skb, 3);
*pos++ = WLAN_EID_SECONDARY_CHANNEL_OFFSET; /* EID */
*pos++ = 1; /* IE length */
ch_type = cfg80211_get_chandef_type(&csa_settings->chandef);
if (ch_type == NL80211_CHAN_HT40PLUS)
*pos++ = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
else
*pos++ = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
}
if (ieee80211_vif_is_mesh(&sdata->vif)) {
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
__le16 pre_value;
skb_put(skb, 8);
*pos++ = WLAN_EID_CHAN_SWITCH_PARAM; /* EID */
*pos++ = 6; /* IE length */
*pos++ = sdata->u.mesh.mshcfg.dot11MeshTTL; /* Mesh TTL */
*pos = 0x00; /* Mesh Flag: Tx Restrict, Initiator, Reason */
*pos |= WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR;
*pos++ |= csa_settings->block_tx ?
WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT : 0x00;
put_unaligned_le16(WLAN_REASON_MESH_CHAN, pos); /* Reason Cd */
pos += 2;
if (!ifmsh->pre_value)
ifmsh->pre_value = 1;
else
ifmsh->pre_value++;
pre_value = cpu_to_le16(ifmsh->pre_value);
memcpy(pos, &pre_value, 2); /* Precedence Value */
pos += 2;
ifmsh->chsw_init = true;
}
ieee80211_tx_skb(sdata, skb);
return 0;
}

44
net/mac80211/wpa.c
View File

@ -301,22 +301,16 @@ ieee80211_crypto_tkip_decrypt(struct ieee80211_rx_data *rx)
}
static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *b_0, u8 *aad,
int encrypted)
{
__le16 mask_fc;
int a4_included, mgmt;
u8 qos_tid;
u8 *b_0, *aad;
u16 data_len, len_a;
u16 len_a;
unsigned int hdrlen;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
memset(scratch, 0, 6 * AES_BLOCK_SIZE);
b_0 = scratch + 3 * AES_BLOCK_SIZE;
aad = scratch + 4 * AES_BLOCK_SIZE;
/*
* Mask FC: zero subtype b4 b5 b6 (if not mgmt)
* Retry, PwrMgt, MoreData; set Protected
@ -338,20 +332,21 @@ static void ccmp_special_blocks(struct sk_buff *skb, u8 *pn, u8 *scratch,
else
qos_tid = 0;
data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN;
if (encrypted)
data_len -= IEEE80211_CCMP_MIC_LEN;
/* In CCM, the initial vectors (IV) used for CTR mode encryption and CBC
* mode authentication are not allowed to collide, yet both are derived
* from this vector b_0. We only set L := 1 here to indicate that the
* data size can be represented in (L+1) bytes. The CCM layer will take
* care of storing the data length in the top (L+1) bytes and setting
* and clearing the other bits as is required to derive the two IVs.
*/
b_0[0] = 0x1;
/* First block, b_0 */
b_0[0] = 0x59; /* flags: Adata: 1, M: 011, L: 001 */
/* Nonce: Nonce Flags | A2 | PN
* Nonce Flags: Priority (b0..b3) | Management (b4) | Reserved (b5..b7)
*/
b_0[1] = qos_tid | (mgmt << 4);
memcpy(&b_0[2], hdr->addr2, ETH_ALEN);
memcpy(&b_0[8], pn, IEEE80211_CCMP_PN_LEN);
/* l(m) */
put_unaligned_be16(data_len, &b_0[14]);
/* AAD (extra authenticate-only data) / masked 802.11 header
* FC | A1 | A2 | A3 | SC | [A4] | [QC] */
@ -407,7 +402,8 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
u8 *pos;
u8 pn[6];
u64 pn64;
u8 scratch[6 * AES_BLOCK_SIZE];
u8 aad[2 * AES_BLOCK_SIZE];
u8 b_0[AES_BLOCK_SIZE];
if (info->control.hw_key &&
!(info->control.hw_key->flags & IEEE80211_KEY_FLAG_GENERATE_IV) &&
@ -460,9 +456,9 @@ static int ccmp_encrypt_skb(struct ieee80211_tx_data *tx, struct sk_buff *skb)
return 0;
pos += IEEE80211_CCMP_HDR_LEN;
ccmp_special_blocks(skb, pn, scratch, 0);
ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, scratch, pos, len,
pos, skb_put(skb, IEEE80211_CCMP_MIC_LEN));
ccmp_special_blocks(skb, pn, b_0, aad, 0);
ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, b_0, aad, pos, len,
skb_put(skb, IEEE80211_CCMP_MIC_LEN));
return 0;
}
@ -525,16 +521,16 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx)
}
if (!(status->flag & RX_FLAG_DECRYPTED)) {
u8 scratch[6 * AES_BLOCK_SIZE];
u8 aad[2 * AES_BLOCK_SIZE];
u8 b_0[AES_BLOCK_SIZE];
/* hardware didn't decrypt/verify MIC */
ccmp_special_blocks(skb, pn, scratch, 1);
ccmp_special_blocks(skb, pn, b_0, aad, 1);
if (ieee80211_aes_ccm_decrypt(
key->u.ccmp.tfm, scratch,
key->u.ccmp.tfm, b_0, aad,
skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
data_len,
skb->data + skb->len - IEEE80211_CCMP_MIC_LEN,
skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN))
skb->data + skb->len - IEEE80211_CCMP_MIC_LEN))
return RX_DROP_UNUSABLE;
}

2
net/rfkill/Kconfig
View File

@ -36,7 +36,7 @@ config RFKILL_REGULATOR
config RFKILL_GPIO
tristate "GPIO RFKILL driver"
depends on RFKILL && GPIOLIB && HAVE_CLK
depends on RFKILL && GPIOLIB
default n
help
If you say yes here you get support of a generic gpio RFKILL

213
net/rfkill/rfkill-gpio.c
View File

@ -24,27 +24,23 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/slab.h>
#include <linux/acpi.h>
#include <linux/acpi_gpio.h>
#include <linux/rfkill-gpio.h>
enum rfkill_gpio_clk_state {
UNSPECIFIED = 0,
PWR_ENABLED,
PWR_DISABLED
};
#define PWR_CLK_SET(_RF, _EN) \
((_RF)->pwr_clk_enabled = (!(_EN) ? PWR_ENABLED : PWR_DISABLED))
#define PWR_CLK_ENABLED(_RF) ((_RF)->pwr_clk_enabled == PWR_ENABLED)
#define PWR_CLK_DISABLED(_RF) ((_RF)->pwr_clk_enabled != PWR_ENABLED)
struct rfkill_gpio_data {
struct rfkill_gpio_platform_data *pdata;
struct rfkill *rfkill_dev;
char *reset_name;
char *shutdown_name;
enum rfkill_gpio_clk_state pwr_clk_enabled;
struct clk *pwr_clk;
const char *name;
enum rfkill_type type;
int reset_gpio;
int shutdown_gpio;
struct rfkill *rfkill_dev;
char *reset_name;
char *shutdown_name;
struct clk *clk;
bool clk_enabled;
};
static int rfkill_gpio_set_power(void *data, bool blocked)
@ -52,23 +48,22 @@ static int rfkill_gpio_set_power(void *data, bool blocked)
struct rfkill_gpio_data *rfkill = data;
if (blocked) {
if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
gpio_direction_output(rfkill->pdata->shutdown_gpio, 0);
if (gpio_is_valid(rfkill->pdata->reset_gpio))
gpio_direction_output(rfkill->pdata->reset_gpio, 0);
if (rfkill->pwr_clk && PWR_CLK_ENABLED(rfkill))
clk_disable(rfkill->pwr_clk);
if (gpio_is_valid(rfkill->shutdown_gpio))
gpio_set_value(rfkill->shutdown_gpio, 0);
if (gpio_is_valid(rfkill->reset_gpio))
gpio_set_value(rfkill->reset_gpio, 0);
if (!IS_ERR(rfkill->clk) && rfkill->clk_enabled)
clk_disable(rfkill->clk);
} else {
if (rfkill->pwr_clk && PWR_CLK_DISABLED(rfkill))
clk_enable(rfkill->pwr_clk);
if (gpio_is_valid(rfkill->pdata->reset_gpio))
gpio_direction_output(rfkill->pdata->reset_gpio, 1);
if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
gpio_direction_output(rfkill->pdata->shutdown_gpio, 1);
if (!IS_ERR(rfkill->clk) && !rfkill->clk_enabled)
clk_enable(rfkill->clk);
if (gpio_is_valid(rfkill->reset_gpio))
gpio_set_value(rfkill->reset_gpio, 1);
if (gpio_is_valid(rfkill->shutdown_gpio))
gpio_set_value(rfkill->shutdown_gpio, 1);
}
if (rfkill->pwr_clk)
PWR_CLK_SET(rfkill, blocked);
rfkill->clk_enabled = blocked;
return 0;
}
@ -77,117 +72,112 @@ static const struct rfkill_ops rfkill_gpio_ops = {
.set_block = rfkill_gpio_set_power,
};
static int rfkill_gpio_acpi_probe(struct device *dev,
struct rfkill_gpio_data *rfkill)
{
const struct acpi_device_id *id;
id = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!id)
return -ENODEV;
rfkill->name = dev_name(dev);
rfkill->type = (unsigned)id->driver_data;
rfkill->reset_gpio = acpi_get_gpio_by_index(dev, 0, NULL);
rfkill->shutdown_gpio = acpi_get_gpio_by_index(dev, 1, NULL);
return 0;
}
static int rfkill_gpio_probe(struct platform_device *pdev)
{
struct rfkill_gpio_data *rfkill;
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
struct rfkill_gpio_data *rfkill;
const char *clk_name = NULL;
int ret = 0;
int len = 0;
if (!pdata) {
pr_warn("%s: No platform data specified\n", __func__);
return -EINVAL;
rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL);
if (!rfkill)
return -ENOMEM;
if (ACPI_HANDLE(&pdev->dev)) {
ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill);
if (ret)
return ret;
} else if (pdata) {
clk_name = pdata->power_clk_name;
rfkill->name = pdata->name;
rfkill->type = pdata->type;
rfkill->reset_gpio = pdata->reset_gpio;
rfkill->shutdown_gpio = pdata->shutdown_gpio;
} else {
return -ENODEV;
}
/* make sure at-least one of the GPIO is defined and that
* a name is specified for this instance */
if (!pdata->name || (!gpio_is_valid(pdata->reset_gpio) &&
!gpio_is_valid(pdata->shutdown_gpio))) {
if ((!gpio_is_valid(rfkill->reset_gpio) &&
!gpio_is_valid(rfkill->shutdown_gpio)) || !rfkill->name) {
pr_warn("%s: invalid platform data\n", __func__);
return -EINVAL;
}
rfkill = kzalloc(sizeof(*rfkill), GFP_KERNEL);
if (!rfkill)
return -ENOMEM;
if (pdata->gpio_runtime_setup) {
if (pdata && pdata->gpio_runtime_setup) {
ret = pdata->gpio_runtime_setup(pdev);
if (ret) {
pr_warn("%s: can't set up gpio\n", __func__);
goto fail_alloc;
return ret;
}
}
rfkill->pdata = pdata;
len = strlen(rfkill->name);
rfkill->reset_name = devm_kzalloc(&pdev->dev, len + 7, GFP_KERNEL);
if (!rfkill->reset_name)
return -ENOMEM;
len = strlen(pdata->name);
rfkill->reset_name = kzalloc(len + 7, GFP_KERNEL);
if (!rfkill->reset_name) {
ret = -ENOMEM;
goto fail_alloc;
}
rfkill->shutdown_name = devm_kzalloc(&pdev->dev, len + 10, GFP_KERNEL);
if (!rfkill->shutdown_name)
return -ENOMEM;
rfkill->shutdown_name = kzalloc(len + 10, GFP_KERNEL);
if (!rfkill->shutdown_name) {
ret = -ENOMEM;
goto fail_reset_name;
}
snprintf(rfkill->reset_name, len + 6 , "%s_reset", rfkill->name);
snprintf(rfkill->shutdown_name, len + 9, "%s_shutdown", rfkill->name);
snprintf(rfkill->reset_name, len + 6 , "%s_reset", pdata->name);
snprintf(rfkill->shutdown_name, len + 9, "%s_shutdown", pdata->name);
rfkill->clk = devm_clk_get(&pdev->dev, clk_name);
if (pdata->power_clk_name) {
rfkill->pwr_clk = clk_get(&pdev->dev, pdata->power_clk_name);
if (IS_ERR(rfkill->pwr_clk)) {
pr_warn("%s: can't find pwr_clk.\n", __func__);
ret = PTR_ERR(rfkill->pwr_clk);
goto fail_shutdown_name;
}
}
if (gpio_is_valid(pdata->reset_gpio)) {
ret = gpio_request(pdata->reset_gpio, rfkill->reset_name);
if (gpio_is_valid(rfkill->reset_gpio)) {
ret = devm_gpio_request_one(&pdev->dev, rfkill->reset_gpio,
0, rfkill->reset_name);
if (ret) {
pr_warn("%s: failed to get reset gpio.\n", __func__);
goto fail_clock;
return ret;
}
}
if (gpio_is_valid(pdata->shutdown_gpio)) {
ret = gpio_request(pdata->shutdown_gpio, rfkill->shutdown_name);
if (gpio_is_valid(rfkill->shutdown_gpio)) {
ret = devm_gpio_request_one(&pdev->dev, rfkill->shutdown_gpio,
0, rfkill->shutdown_name);
if (ret) {
pr_warn("%s: failed to get shutdown gpio.\n", __func__);
goto fail_reset;
return ret;
}
}
rfkill->rfkill_dev = rfkill_alloc(pdata->name, &pdev->dev, pdata->type,
&rfkill_gpio_ops, rfkill);
if (!rfkill->rfkill_dev) {
ret = -ENOMEM;
goto fail_shutdown;
}
rfkill->rfkill_dev = rfkill_alloc(rfkill->name, &pdev->dev,
rfkill->type, &rfkill_gpio_ops,
rfkill);
if (!rfkill->rfkill_dev)
return -ENOMEM;
ret = rfkill_register(rfkill->rfkill_dev);
if (ret < 0)
goto fail_rfkill;
return ret;
platform_set_drvdata(pdev, rfkill);
dev_info(&pdev->dev, "%s device registered.\n", pdata->name);
dev_info(&pdev->dev, "%s device registered.\n", rfkill->name);
return 0;
fail_rfkill:
rfkill_destroy(rfkill->rfkill_dev);
fail_shutdown:
if (gpio_is_valid(pdata->shutdown_gpio))
gpio_free(pdata->shutdown_gpio);
fail_reset:
if (gpio_is_valid(pdata->reset_gpio))
gpio_free(pdata->reset_gpio);
fail_clock:
if (rfkill->pwr_clk)
clk_put(rfkill->pwr_clk);
fail_shutdown_name:
kfree(rfkill->shutdown_name);
fail_reset_name:
kfree(rfkill->reset_name);
fail_alloc:
kfree(rfkill);
return ret;
}
static int rfkill_gpio_remove(struct platform_device *pdev)
@ -195,31 +185,26 @@ static int rfkill_gpio_remove(struct platform_device *pdev)
struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev);
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
if (pdata->gpio_runtime_close)
if (pdata && pdata->gpio_runtime_close)
pdata->gpio_runtime_close(pdev);
rfkill_unregister(rfkill->rfkill_dev);
rfkill_destroy(rfkill->rfkill_dev);
if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
gpio_free(rfkill->pdata->shutdown_gpio);
if (gpio_is_valid(rfkill->pdata->reset_gpio))
gpio_free(rfkill->pdata->reset_gpio);
if (rfkill->pwr_clk && PWR_CLK_ENABLED(rfkill))
clk_disable(rfkill->pwr_clk);
if (rfkill->pwr_clk)
clk_put(rfkill->pwr_clk);
kfree(rfkill->shutdown_name);
kfree(rfkill->reset_name);
kfree(rfkill);
return 0;
}
static const struct acpi_device_id rfkill_acpi_match[] = {
{ "BCM4752", RFKILL_TYPE_GPS },
{ },
};
static struct platform_driver rfkill_gpio_driver = {
.probe = rfkill_gpio_probe,
.remove = rfkill_gpio_remove,
.driver = {
.name = "rfkill_gpio",
.owner = THIS_MODULE,
.name = "rfkill_gpio",
.owner = THIS_MODULE,
.acpi_match_table = ACPI_PTR(rfkill_acpi_match),
},
};

3
net/wireless/chan.c
View File

@ -504,7 +504,8 @@ cfg80211_get_chan_state(struct wireless_dev *wdev,
case NL80211_IFTYPE_ADHOC:
if (wdev->current_bss) {
*chan = wdev->current_bss->pub.channel;
*chanmode = wdev->ibss_fixed
*chanmode = (wdev->ibss_fixed &&
!wdev->ibss_dfs_possible)
? CHAN_MODE_SHARED
: CHAN_MODE_EXCLUSIVE;
return;

24
net/wireless/ibss.c
View File

@ -83,6 +83,8 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
struct cfg80211_cached_keys *connkeys)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct ieee80211_channel *check_chan;
u8 radar_detect_width = 0;
int err;
ASSERT_WDEV_LOCK(wdev);
@ -114,14 +116,28 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
wdev->connect_keys = connkeys;
wdev->ibss_fixed = params->channel_fixed;
wdev->ibss_dfs_possible = params->userspace_handles_dfs;
#ifdef CONFIG_CFG80211_WEXT
wdev->wext.ibss.chandef = params->chandef;
#endif
check_chan = params->chandef.chan;
if (params->userspace_handles_dfs) {
/* use channel NULL to check for radar even if the current
* channel is not a radar channel - it might decide to change
* to DFS channel later.
*/
radar_detect_width = BIT(params->chandef.width);
check_chan = NULL;
}
err = cfg80211_can_use_iftype_chan(rdev, wdev, wdev->iftype,
check_chan,
(params->channel_fixed &&
!radar_detect_width)
? CHAN_MODE_SHARED
: CHAN_MODE_EXCLUSIVE,
radar_detect_width);
err = cfg80211_can_use_chan(rdev, wdev, params->chandef.chan,
params->channel_fixed
? CHAN_MODE_SHARED
: CHAN_MODE_EXCLUSIVE);
if (err) {
wdev->connect_keys = NULL;
return err;

62
net/wireless/nl80211.c
View File

@ -354,6 +354,9 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
[NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
[NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_U16 },
[NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_U16 },
[NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
[NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
};
/* policy for the key attributes */
@ -3896,9 +3899,45 @@ static int nl80211_parse_sta_wme(struct genl_info *info,
return 0;
}
static int nl80211_parse_sta_channel_info(struct genl_info *info,
struct station_parameters *params)
{
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
params->supported_channels =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
params->supported_channels_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
/*
* Need to include at least one (first channel, number of
* channels) tuple for each subband, and must have proper
* tuples for the rest of the data as well.
*/
if (params->supported_channels_len < 2)
return -EINVAL;
if (params->supported_channels_len % 2)
return -EINVAL;
}
if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
params->supported_oper_classes =
nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
params->supported_oper_classes_len =
nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
/*
* The value of the Length field of the Supported Operating
* Classes element is between 2 and 253.
*/
if (params->supported_oper_classes_len < 2 ||
params->supported_oper_classes_len > 253)
return -EINVAL;
}
return 0;
}
static int nl80211_set_station_tdls(struct genl_info *info,
struct station_parameters *params)
{
int err;
/* Dummy STA entry gets updated once the peer capabilities are known */
if (info->attrs[NL80211_ATTR_PEER_AID])
params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
@ -3909,6 +3948,10 @@ static int nl80211_set_station_tdls(struct genl_info *info,
params->vht_capa =
nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
err = nl80211_parse_sta_channel_info(info, params);
if (err)
return err;
return nl80211_parse_sta_wme(info, params);
}
@ -4089,6 +4132,10 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
err = nl80211_parse_sta_channel_info(info, &params);
if (err)
return err;
err = nl80211_parse_sta_wme(info, &params);
if (err)
return err;
@ -5653,6 +5700,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
break;
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
break;
default:
return -EOPNOTSUPP;
@ -5665,9 +5713,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
/* only important for AP, IBSS and mesh create IEs internally */
if (need_new_beacon &&
(!info->attrs[NL80211_ATTR_CSA_IES] ||
!info->attrs[NL80211_ATTR_CSA_C_OFF_BEACON]))
if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
return -EINVAL;
params.count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
@ -5722,9 +5768,9 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
if (!cfg80211_reg_can_beacon(&rdev->wiphy, &params.chandef))
return -EINVAL;
/* DFS channels are only supported for AP/P2P GO ... for now. */
if (dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP ||
dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO) {
dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO ||
dev->ieee80211_ptr->iftype == NL80211_IFTYPE_ADHOC) {
err = cfg80211_chandef_dfs_required(wdev->wiphy,
&params.chandef);
if (err < 0) {
@ -6556,6 +6602,9 @@ static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
ibss.control_port =
nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
ibss.userspace_handles_dfs =
nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
if (err)
kfree(connkeys);
@ -10762,7 +10811,8 @@ void cfg80211_ch_switch_notify(struct net_device *dev,
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
wdev->iftype != NL80211_IFTYPE_P2P_GO &&
wdev->iftype != NL80211_IFTYPE_ADHOC))
wdev->iftype != NL80211_IFTYPE_ADHOC &&
wdev->iftype != NL80211_IFTYPE_MESH_POINT))
goto out;
wdev->channel = chandef->chan;

14
net/wireless/reg.c
View File

@ -787,7 +787,6 @@ const char *reg_initiator_name(enum nl80211_reg_initiator initiator)
EXPORT_SYMBOL(reg_initiator_name);
#ifdef CONFIG_CFG80211_REG_DEBUG
static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan,
const struct ieee80211_reg_rule *reg_rule)
{
@ -974,6 +973,13 @@ static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy)
}
#endif
static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy)
{
if (wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY &&
!(wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY))
return true;
return false;
}
static bool ignore_reg_update(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator)
@ -1000,7 +1006,7 @@ static bool ignore_reg_update(struct wiphy *wiphy,
* wiphy->regd will be set once the device has its own
* desired regulatory domain set
*/
if (wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY && !wiphy->regd &&
if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd &&
initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
!is_world_regdom(lr->alpha2)) {
REG_DBG_PRINT("Ignoring regulatory request set by %s "
@ -1706,8 +1712,8 @@ int regulatory_hint(struct wiphy *wiphy, const char *alpha2)
}
EXPORT_SYMBOL(regulatory_hint);
void regulatory_hint_11d(struct wiphy *wiphy, enum ieee80211_band band,
const u8 *country_ie, u8 country_ie_len)
void regulatory_hint_country_ie(struct wiphy *wiphy, enum ieee80211_band band,
const u8 *country_ie, u8 country_ie_len)
{
char alpha2[2];
enum environment_cap env = ENVIRON_ANY;

4
net/wireless/reg.h
View File

@ -58,7 +58,7 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
gfp_t gfp);
/**
* regulatory_hint_11d - hints a country IE as a regulatory domain
* regulatory_hint_country_ie - hints a country IE as a regulatory domain
* @wiphy: the wireless device giving the hint (used only for reporting
* conflicts)
* @band: the band on which the country IE was received on. This determines
@ -78,7 +78,7 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
* not observed. For this reason if a triplet is seen with channel
* information for a band the BSS is not present in it will be ignored.
*/
void regulatory_hint_11d(struct wiphy *wiphy,
void regulatory_hint_country_ie(struct wiphy *wiphy,
enum ieee80211_band band,
const u8 *country_ie,
u8 country_ie_len);

4
net/wireless/sme.c
View File

@ -682,8 +682,8 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
* - country_ie + 2, the start of the country ie data, and
* - and country_ie[1] which is the IE length
*/
regulatory_hint_11d(wdev->wiphy, bss->channel->band,
country_ie + 2, country_ie[1]);
regulatory_hint_country_ie(wdev->wiphy, bss->channel->band,
country_ie + 2, country_ie[1]);
kfree(country_ie);
}

14
net/wireless/util.c
View File

@ -1249,7 +1249,7 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
enum cfg80211_chan_mode chmode;
int num_different_channels = 0;
int total = 1;
bool radar_required;
bool radar_required = false;
int i, j;
ASSERT_RTNL();
@ -1264,14 +1264,20 @@ int cfg80211_can_use_iftype_chan(struct cfg80211_registered_device *rdev,
case NL80211_IFTYPE_MESH_POINT:
case NL80211_IFTYPE_P2P_GO:
case NL80211_IFTYPE_WDS:
radar_required = !!(chan &&
(chan->flags & IEEE80211_CHAN_RADAR));
/* if the interface could potentially choose a DFS channel,
* then mark DFS as required.
*/
if (!chan) {
if (chanmode != CHAN_MODE_UNDEFINED && radar_detect)
radar_required = true;
break;
}
radar_required = !!(chan->flags & IEEE80211_CHAN_RADAR);
break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_P2P_DEVICE:
case NL80211_IFTYPE_MONITOR:
radar_required = false;
break;
case NUM_NL80211_IFTYPES:
case NL80211_IFTYPE_UNSPECIFIED: