target/linux/generic/patches-4.1/640-bridge_no_eap_forward.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Subject: [PATCH] bridge: no EAP forward
   3
   4 When bridging, do not forward EAP frames to other ports, only deliver
   5 them locally.
   6 Fixes WPA authentication issues with multiples APs that are connected to
   7 each other via bridges.
   8 ---
   9 --- a/net/bridge/br_input.c
  10 +++ b/net/bridge/br_input.c
  11 @@ -162,7 +162,11 @@ int br_handle_frame_finish(struct sock *
  12         if (IS_ENABLED(CONFIG_INET) && skb->protocol == htons(ETH_P_ARP))
  13                 br_do_proxy_arp(skb, br, vid, p);
  14
  15 -       if (is_broadcast_ether_addr(dest)) {
  16 +       if (skb->protocol == htons(ETH_P_PAE)) {
  17 +               skb2 = skb;
  18 +               /* Do not forward 802.1x/EAP frames */
  19 +               skb = NULL;
  20 +       } else if (is_broadcast_ether_addr(dest)) {
  21                 skb2 = skb;
  22                 unicast = false;
  23         } else if (is_multicast_ether_addr(dest)) {