package/kernel/mac80211/patches/subsys/366-mac80211-accept-deauth-frames-in-IBSS-mode.patch

   1 From 95697f9907bfe3eab0ef20265a766b22e27dde64 Mon Sep 17 00:00:00 2001
   2 From: Johannes Berg <johannes.berg@intel.com>
   3 Date: Fri, 4 Oct 2019 15:37:05 +0300
   4 Subject: [PATCH] mac80211: accept deauth frames in IBSS mode
   5
   6 We can process deauth frames and all, but we drop them very
   7 early in the RX path today - this could never have worked.
   8
   9 Fixes: 2cc59e784b54 ("mac80211: reply to AUTH with DEAUTH if sta allocation fails in IBSS")
  10 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  11 Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
  12 Link: https://lore.kernel.org/r/20191004123706.15768-2-luca@coelho.fi
  13 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  14 ---
  15  net/mac80211/rx.c | 11 ++++++++++-
  16  1 file changed, 10 insertions(+), 1 deletion(-)
  17
  18 --- a/net/mac80211/rx.c
  19 +++ b/net/mac80211/rx.c
  20 @@ -3407,9 +3407,18 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_
  21         case cpu_to_le16(IEEE80211_STYPE_PROBE_RESP):
  22                 /* process for all: mesh, mlme, ibss */
  23                 break;
  24 +       case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
  25 +               if (is_multicast_ether_addr(mgmt->da) &&
  26 +                   !is_broadcast_ether_addr(mgmt->da))
  27 +                       return RX_DROP_MONITOR;
  28 +
  29 +               /* process only for station/IBSS */
  30 +               if (sdata->vif.type != NL80211_IFTYPE_STATION &&
  31 +                   sdata->vif.type != NL80211_IFTYPE_ADHOC)
  32 +                       return RX_DROP_MONITOR;
  33 +               break;
  34         case cpu_to_le16(IEEE80211_STYPE_ASSOC_RESP):
  35         case cpu_to_le16(IEEE80211_STYPE_REASSOC_RESP):
  36 -       case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
  37         case cpu_to_le16(IEEE80211_STYPE_DISASSOC):
  38                 if (is_multicast_ether_addr(mgmt->da) &&
  39                     !is_broadcast_ether_addr(mgmt->da))