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From:   Johannes Berg <johannes@sipsolutions.net>
To:     linux-wireless@vger.kernel.org
Cc:     Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Subject: [PATCH 69/76] wifi: mac80211: Allow EAPOL tx from specific link
Date:   Wed, 13 Jul 2022 11:44:55 +0200
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From: Andrei Otcheretianski <andrei.otcheretianski@intel.com>

Allow link source address on TX.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 net/mac80211/ieee80211_i.h | 3 +++
 net/mac80211/rx.c          | 4 ++--
 net/mac80211/tx.c          | 2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 58b08315fa26..163e62dab045 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1752,6 +1752,9 @@ void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
 void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata);
 void ieee80211_clear_fast_rx(struct sta_info *sta);
 
+bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
+			   const u8 *addr, int *out_link_id);
+
 /* STA code */
 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 97046d30c9ca..fcea7c3f5cd5 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2532,8 +2532,8 @@ __ieee80211_data_to_8023(struct ieee80211_rx_data *rx, bool *port_control)
 	return 0;
 }
 
-static bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
-				  const u8 *addr, int *out_link_id)
+bool ieee80211_is_our_addr(struct ieee80211_sub_if_data *sdata,
+			   const u8 *addr, int *out_link_id)
 {
 	unsigned int link_id;
 
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 1ba3bd180bd2..b9cb71dfa6cf 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2781,7 +2781,7 @@ static struct sk_buff *ieee80211_build_hdr(struct ieee80211_sub_if_data *sdata,
 		     (sdata->vif.type != NL80211_IFTYPE_OCB) &&
 		     !multicast && !authorized &&
 		     (cpu_to_be16(ethertype) != sdata->control_port_protocol ||
-		      !ether_addr_equal(sdata->vif.addr, skb->data + ETH_ALEN)))) {
+		      !ieee80211_is_our_addr(sdata, skb->data + ETH_ALEN, NULL)))) {
 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 		net_info_ratelimited("%s: dropped frame to %pM (unauthorized port)\n",
 				    sdata->name, hdr.addr1);
-- 
2.36.1