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mac80211: do not drop tx nulldata packets on encrypted links

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Fixes sending out nulldata probing frames

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-12-18 22:58:10 +01:00
parent 5950397e14
commit 3ab695368a
1 changed files with 25 additions and 0 deletions
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package/kernel/mac80211/patches/subsys/336-mac80211-do-not-drop-tx-nulldata-packets-on-encrypte.patch Normal file
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From: Felix Fietkau <nbd@nbd.name>
Date: Fri, 18 Dec 2020 20:08:06 +0100
Subject: [PATCH] mac80211: do not drop tx nulldata packets on encrypted links
ieee80211_tx_h_select_key drops any non-mgmt packets without a key when
encryption is used. This is wrong for nulldata packets that can't be
encrypted and are sent out for probing clients and indicating 4-address
mode.
Reported-by: Sebastian Gottschall <s.gottschall@dd-wrt.com>
Fixes: a0761a301746 ("mac80211: drop data frames without key on encrypted links")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -657,7 +657,7 @@ ieee80211_tx_h_select_key(struct ieee802
if (!skip_hw && tx->key &&
tx->key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)
info->control.hw_key = &tx->key->conf;
- } else if (!ieee80211_is_mgmt(hdr->frame_control) && tx->sta &&
+ } else if (ieee80211_is_data_present(hdr->frame_control) && tx->sta &&
test_sta_flag(tx->sta, WLAN_STA_USES_ENCRYPTION)) {
return TX_DROP;
}