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mac80211: add extended channel switching capability if the driver supports CSA

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The Extended Channel Switching capability bit in the extended
capabilities element must be set if the driver supports CSA on
non-beaconing interfaces.

Since this capability needs to be set during driver registration, the
extended_capabiliities global variable needs to be moved to the local
structure so that it can be modified.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Luciano Coelho 2014-10-08 09:48:36 +03:00 committed by Johannes Berg
parent 2ba45384e5
commit e9a21949b7
3 changed files with 19 additions and 9 deletions
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5
include/linux/ieee80211.h
View File

@ -1998,6 +1998,11 @@ enum ieee80211_tdls_actioncode {
WLAN_TDLS_DISCOVERY_REQUEST = 10,
};
/* Extended Channel Switching capability to be set in the 1st byte of
* the @WLAN_EID_EXT_CAPABILITY information element
*/
#define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING BIT(2)
/* Interworking capabilities are set in 7th bit of 4th byte of the
* @WLAN_EID_EXT_CAPABILITY information element
*/

3
net/mac80211/ieee80211_i.h
View File

@ -1307,6 +1307,9 @@ struct ieee80211_local {
/* virtual monitor interface */
struct ieee80211_sub_if_data __rcu *monitor_sdata;
struct cfg80211_chan_def monitor_chandef;
/* extended capabilities provided by mac80211 */
u8 ext_capa[8];
};
static inline struct ieee80211_sub_if_data *

20
net/mac80211/main.c
View File

@ -478,11 +478,6 @@ static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
},
};
static const u8 extended_capabilities[] = {
0, 0, 0, 0, 0, 0, 0,
WLAN_EXT_CAPA8_OPMODE_NOTIF,
};
struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
const struct ieee80211_ops *ops)
{
@ -539,10 +534,6 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
WIPHY_FLAG_REPORTS_OBSS |
WIPHY_FLAG_OFFCHAN_TX;
wiphy->extended_capabilities = extended_capabilities;
wiphy->extended_capabilities_mask = extended_capabilities;
wiphy->extended_capabilities_len = ARRAY_SIZE(extended_capabilities);
if (ops->remain_on_channel)
wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
@ -591,6 +582,13 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
wiphy->vht_capa_mod_mask = &mac80211_vht_capa_mod_mask;
local->ext_capa[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF;
wiphy->extended_capabilities = local->ext_capa;
wiphy->extended_capabilities_mask = local->ext_capa;
wiphy->extended_capabilities_len =
ARRAY_SIZE(local->ext_capa);
INIT_LIST_HEAD(&local->interfaces);
__hw_addr_init(&local->mc_list);
@ -958,6 +956,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
if (local->hw.wiphy->flags & WIPHY_FLAG_SUPPORTS_TDLS)
local->hw.wiphy->flags |= WIPHY_FLAG_TDLS_EXTERNAL_SETUP;
/* mac80211 supports eCSA, if the driver supports STA CSA at all */
if (local->hw.flags & IEEE80211_HW_CHANCTX_STA_CSA)
local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
result = wiphy_register(local->hw.wiphy);