diff options
| author | Andreas Müller <goo@stapelspeicher.org> | 2014-12-12 12:11:11 +0100 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2015-01-07 17:55:06 +0100 |
| commit | a4346dd0a57d96e9f7c3d0cfafeda2a5568eb685 (patch) | |
| tree | 80e297505a648a29b2e5a10aacdfab2a6474c1b0 /net/mac80211 | |
| parent | d9135d9e6aa11beb51b98342efb1a87987269622 (diff) | |
mac80211: fix multicast LED blinking and counter
commit d025933e29872cb1fe19fc54d80e4dfa4ee5779c upstream.
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.
Fixes: b8fff407a180 ("mac80211: fix use-after-free in defragmentation")
Signed-off-by: Andreas Müller <goo@stapelspeicher.org>
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/rx.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 275cb85bfa31..ef3bdba9309e 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -1646,14 +1646,14 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) sc = le16_to_cpu(hdr->seq_ctrl); frag = sc & IEEE80211_SCTL_FRAG; - if (likely(!ieee80211_has_morefrags(fc) && frag == 0)) - goto out; - if (is_multicast_ether_addr(hdr->addr1)) { 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); if (skb_linearize(rx->skb)) @@ -1744,9 +1744,10 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx) status->rx_flags |= IEEE80211_RX_FRAGMENTED; out: + ieee80211_led_rx(rx->local); + out_no_led: if (rx->sta) rx->sta->rx_packets++; - ieee80211_led_rx(rx->local); return RX_CONTINUE; } |