Commit d025933e authored by Andreas Müller's avatar Andreas Müller Committed by Johannes Berg

mac80211: fix multicast LED blinking and counter

As multicast-frames can't be fragmented, "dot11MulticastReceivedFrameCount"
stopped being incremented after the use-after-free fix. Furthermore, the
RX-LED will be triggered by every multicast frame (which wouldn't happen
before) which wouldn't allow the LED to rest at all.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=89431 which also had the
patch.

Cc: stable@vger.kernel.org
Fixes: b8fff407 ("mac80211: fix use-after-free in defragmentation")
Signed-off-by: default avatarAndreas Müller <goo@stapelspeicher.org>
[rewrite commit message]
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 7e6225a1
...@@ -1761,14 +1761,14 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) ...@@ -1761,14 +1761,14 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
sc = le16_to_cpu(hdr->seq_ctrl); sc = le16_to_cpu(hdr->seq_ctrl);
frag = sc & IEEE80211_SCTL_FRAG; frag = sc & IEEE80211_SCTL_FRAG;
if (likely(!ieee80211_has_morefrags(fc) && frag == 0))
goto out;
if (is_multicast_ether_addr(hdr->addr1)) { if (is_multicast_ether_addr(hdr->addr1)) {
rx->local->dot11MulticastReceivedFrameCount++; rx->local->dot11MulticastReceivedFrameCount++;
goto out; goto out_no_led;
} }
if (likely(!ieee80211_has_morefrags(fc) && frag == 0))
goto out;
I802_DEBUG_INC(rx->local->rx_handlers_fragments); I802_DEBUG_INC(rx->local->rx_handlers_fragments);
if (skb_linearize(rx->skb)) if (skb_linearize(rx->skb))
...@@ -1859,9 +1859,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) ...@@ -1859,9 +1859,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
status->rx_flags |= IEEE80211_RX_FRAGMENTED; status->rx_flags |= IEEE80211_RX_FRAGMENTED;
out: out:
ieee80211_led_rx(rx->local);
out_no_led:
if (rx->sta) if (rx->sta)
rx->sta->rx_packets++; rx->sta->rx_packets++;
ieee80211_led_rx(rx->local);
return RX_CONTINUE; return RX_CONTINUE;
} }
......
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