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-rw-r--r--target/linux/generic/patches-4.9/640-bridge-only-accept-EAP-locally.patch27
1 files changed, 27 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.9/640-bridge-only-accept-EAP-locally.patch b/target/linux/generic/patches-4.9/640-bridge-only-accept-EAP-locally.patch
new file mode 100644
index 0000000000..3202499ed4
--- /dev/null
+++ b/target/linux/generic/patches-4.9/640-bridge-only-accept-EAP-locally.patch
@@ -0,0 +1,27 @@
+From: Felix Fietkau <nbd@nbd.name>
+Subject: [PATCH] bridge: only accept EAP locally
+
+When bridging, do not forward EAP frames to other ports, only deliver
+them locally, regardless of the state.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -163,11 +163,14 @@ int br_handle_frame_finish(struct net *n
+ }
+ }
+
++ BR_INPUT_SKB_CB(skb)->brdev = br->dev;
++
++ if (skb->protocol == htons(ETH_P_PAE))
++ return br_pass_frame_up(skb);
++
+ if (p->state == BR_STATE_LEARNING)
+ goto drop;
+
+- BR_INPUT_SKB_CB(skb)->brdev = br->dev;
+-
+ if (IS_ENABLED(CONFIG_INET) && skb->protocol == htons(ETH_P_ARP))
+ br_do_proxy_arp(skb, br, vid, p);
+