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From:   Jouni Malinen <jouni@codeaurora.org>
To:     Johannes Berg <johannes@sipsolutions.net>
Cc:     linux-wireless@vger.kernel.org,
        Sara Sharon <sara.sharon@intel.com>,
        Johannes Berg <johannes.berg@intel.com>,
        Jouni Malinen <jouni@codeaurora.org>
Subject: [PATCH 4/5] mac80211: Declare support for Multi-BSSID if driver supports it
Date:   Fri,  7 Dec 2018 14:10:49 +0200
Message-Id: <1544184650-14124-4-git-send-email-jouni@codeaurora.org>
In-Reply-To: <1544184650-14124-1-git-send-email-jouni@codeaurora.org>
References: <1544184650-14124-1-git-send-email-jouni@codeaurora.org>
Sender: linux-wireless-owner@vger.kernel.org
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From: Sara Sharon <sara.sharon@intel.com>

Define bits and flags for indicating support of Multi-BSSID feature and
indicate support for this if the driver supports it.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
---
 include/linux/ieee80211.h | 6 ++++++
 include/net/mac80211.h    | 3 +++
 net/mac80211/debugfs.c    | 1 +
 net/mac80211/main.c       | 4 ++++
 4 files changed, 14 insertions(+)

diff --git a/include/linux/ieee80211.h b/include/linux/ieee80211.h
index 407d6fd..0a84f4e 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -2656,6 +2656,12 @@ enum ieee80211_tdls_actioncode {
  */
 #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING	BIT(2)
 
+/* Multiple BSSID capability is set in the 6th bit of the 3rd byte of the
+ * @WLAN_EID_EXT_CAPABILITY information element
+ */
+#define WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT	BIT(6)
+
+
 /* TDLS capabilities in the the 4th byte of @WLAN_EID_EXT_CAPABILITY */
 #define WLAN_EXT_CAPA4_TDLS_BUFFER_STA		BIT(4)
 #define WLAN_EXT_CAPA4_TDLS_PEER_PSM		BIT(5)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9386cf9..e7c4e11 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -2181,6 +2181,8 @@ struct ieee80211_txq {
  *	MMPDUs on station interfaces. This of course requires the driver to use
  *	TXQs to start with.
  *
+ * @IEEE80211_HW_SUPPORTS_MULTI_BSSID: Hardware supports multi BSSID
+ *
  * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
  */
 enum ieee80211_hw_flags {
@@ -2229,6 +2231,7 @@ enum ieee80211_hw_flags {
 	IEEE80211_HW_BUFF_MMPDU_TXQ,
 	IEEE80211_HW_SUPPORTS_VHT_EXT_NSS_BW,
 	IEEE80211_HW_STA_MMPDU_TXQ,
+	IEEE80211_HW_SUPPORTS_MULTI_BSSID,
 
 	/* keep last, obviously */
 	NUM_IEEE80211_HW_FLAGS
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 3fe541e..28a7e60 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -218,6 +218,7 @@ static const char *hw_flag_names[] = {
 	FLAG(BUFF_MMPDU_TXQ),
 	FLAG(SUPPORTS_VHT_EXT_NSS_BW),
 	FLAG(STA_MMPDU_TXQ),
+	FLAG(SUPPORTS_MULTI_BSSID),
 #undef FLAG
 };
 
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 83e71e6..6ad4288 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1104,6 +1104,10 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (ieee80211_hw_check(&local->hw, CHANCTX_STA_CSA))
 		local->ext_capa[0] |= WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING;
 
+	/* mac80211 supports multi BSSID, if the driver supports it */
+	if (ieee80211_hw_check(&local->hw, SUPPORTS_MULTI_BSSID))
+		local->ext_capa[2] |= WLAN_EXT_CAPA3_MULTI_BSSID_SUPPORT;
+
 	local->hw.wiphy->max_num_csa_counters = IEEE80211_MAX_CSA_COUNTERS_NUM;
 
 	result = wiphy_register(local->hw.wiphy);
-- 
2.7.4