package/kernel/mac80211/patches/subsys/321-mac80211-fix-EAPoL-rekey-fail-in-802.3-rx-path.patch

   1 From: Deren Wu <deren.wu@mediatek.com>
   2 Date: Sun, 13 Feb 2022 00:20:15 +0800
   3 Subject: [PATCH] mac80211: fix EAPoL rekey fail in 802.3 rx path
   4
   5 mac80211 set capability NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211
   6 to upper layer by default. That means we should pass EAPoL packets through
   7 nl80211 path only, and should not send the EAPoL skb to netdevice diretly.
   8 At the meanwhile, wpa_supplicant would not regist sock to listen EAPoL skb
   9 on the netdevice.
  10
  11 However, there is no contorl_port_protocol handler in mac80211 for 802.3 RX
  12 packets, mac80211 driver would pass up the EAPoL rekey frame to netdevice
  13 and wpa_supplicant would be never interactive with this kind of packets,
  14 if SUPPORTS_RX_DECAP_OFFLOAD is enabled. This causes STA always rekey fail
  15 if EAPoL frame go through 802.3 path.
  16
  17 To avoid this problem, align the same process as 802.11 type to handle
  18 this frame before put it into network stack.
  19
  20 Fixes: 80a915ec4427 ("mac80211: add rx decapsulation offload support")
  21 Signed-off-by: Deren Wu <deren.wu@mediatek.com>
  22 ---
  23
  24 --- a/net/mac80211/rx.c
  25 +++ b/net/mac80211/rx.c
  26 @@ -4523,16 +4523,7 @@ static void ieee80211_rx_8023(struct iee
  27
  28         /* deliver to local stack */
  29         skb->protocol = eth_type_trans(skb, fast_rx->dev);
  30 -       memset(skb->cb, 0, sizeof(skb->cb));
  31 -       if (rx->list)
  32 -#if LINUX_VERSION_IS_GEQ(4,19,0)
  33 -               list_add_tail(&skb->list, rx->list);
  34 -#else
  35 -               __skb_queue_tail(rx->list, skb);
  36 -#endif
  37 -       else
  38 -               netif_receive_skb(skb);
  39 -
  40 +       ieee80211_deliver_skb_to_local_stack(skb, rx);
  41  }
  42
  43  static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,