[PATCH 4.4 47/57] mac80211: drop multicast fragments
From: Sasha Levin <sashal@kernel.org>
Date: 2021-06-28 15:30:40
Also in:
lkml
Subsystem:
mac80211, the rest · Maintainers:
Johannes Berg, Linus Torvalds
From: Johannes Berg <redacted> [ Upstream commit a9799541ca34652d9996e45f80e8e03144c12949 ] These are not permitted by the spec, just drop them. Link: https://lore.kernel.org/r/20210609161305.23def022b750.Ibd6dd3cdce573dae262fcdc47f8ac52b883a9c50@changeid (local) Signed-off-by: Johannes Berg <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- net/mac80211/rx.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index ae0fba044cd0..bde924968cd2 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c@@ -1853,17 +1853,15 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) sc = le16_to_cpu(hdr->seq_ctrl); frag = sc & IEEE80211_SCTL_FRAG; - if (is_multicast_ether_addr(hdr->addr1)) { - I802_DEBUG_INC(rx->local->dot11MulticastReceivedFrameCount); - goto out_no_led; - } - if (rx->sta) cache = &rx->sta->frags; if (likely(!ieee80211_has_morefrags(fc) && frag == 0)) goto out; + if (is_multicast_ether_addr(hdr->addr1)) + return RX_DROP_MONITOR; + I802_DEBUG_INC(rx->local->rx_handlers_fragments); if (skb_linearize(rx->skb))
@@ -1992,7 +1990,6 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) out: ieee80211_led_rx(rx->local); - out_no_led: if (rx->sta) rx->sta->rx_stats.packets++; return RX_CONTINUE;
--
2.30.2