From 95697f9907bfe3eab0ef20265a766b22e27dde64 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 4 Oct 2019 15:37:05 +0300 Subject: [PATCH] mac80211: accept deauth frames in IBSS mode We can process deauth frames and all, but we drop them very early in the RX path today - this could never have worked. Fixes: 2cc59e784b54 ("mac80211: reply to AUTH with DEAUTH if sta allocation fails in IBSS") Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/20191004123706.15768-2-luca@coelho.fi Signed-off-by: Johannes Berg --- net/mac80211/rx.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -3407,9 +3407,18 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_ case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP): /* process for all: mesh, mlme, ibss */ break; + case cpu_to_le16(IEEE80211_STYPE_DEAUTH): + if (is_multicast_ether_addr(mgmt->da) && + !is_broadcast_ether_addr(mgmt->da)) + return RX_DROP_MONITOR; + + /* process only for station/IBSS */ + if (sdata->vif.type != NL80211_IFTYPE_STATION && + sdata->vif.type != NL80211_IFTYPE_ADHOC) + return RX_DROP_MONITOR; + break; case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP): case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP): - case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): if (is_multicast_ether_addr(mgmt->da) && !is_broadcast_ether_addr(mgmt->da))