mac80211: add extended channel switching capability if the driver supports CSA
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>
diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index b1be39c..5fab17b 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -1998,6 +1998,11 @@
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
*/
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c2aaec4..a9cc491 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1307,6 +1307,9 @@
/* 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 *
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 0de7c93..107d1c8 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -478,11 +478,6 @@
},
};
-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 @@
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 @@
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 @@
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);