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authorJouni Malinen <jouni@codeaurora.org>2015-03-04 13:54:21 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-05 22:52:23 +0300
commit842a9ae08a25671db3d4f689eed68b4d64be15b5 (patch)
treee8159604c1e8cc0abb1868e21ba6f6a5cabad5f7 /net/bridge/br_forward.c
parent787fb2bd42b9d798f4ed85b66e878222a9e28ae6 (diff)
downloadlinux-842a9ae08a25671db3d4f689eed68b4d64be15b5.tar.xz
bridge: Extend Proxy ARP design to allow optional rules for Wi-Fi
This extends the design in commit 958501163ddd ("bridge: Add support for IEEE 802.11 Proxy ARP") with optional set of rules that are needed to meet the IEEE 802.11 and Hotspot 2.0 requirements for ProxyARP. The previously added BR_PROXYARP behavior is left as-is and a new BR_PROXYARP_WIFI alternative is added so that this behavior can be configured from user space when required. In addition, this enables proxyarp functionality for unicast ARP requests for both BR_PROXYARP and BR_PROXYARP_WIFI since it is possible to use unicast as well as broadcast for these frames. The key differences in functionality: BR_PROXYARP: - uses the flag on the bridge port on which the request frame was received to determine whether to reply - block bridge port flooding completely on ports that enable proxy ARP BR_PROXYARP_WIFI: - uses the flag on the bridge port to which the target device of the request belongs - block bridge port flooding selectively based on whether the proxyarp functionality replied Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/bridge/br_forward.c')
-rw-r--r--net/bridge/br_forward.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index f96933a823e3..1238fabff874 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -188,6 +188,9 @@ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
/* Do not flood to ports that enable proxy ARP */
if (p->flags & BR_PROXYARP)
continue;
+ if ((p->flags & BR_PROXYARP_WIFI) &&
+ BR_INPUT_SKB_CB(skb)->proxyarp_replied)
+ continue;
prev = maybe_deliver(prev, p, skb, __packet_hook);
if (IS_ERR(prev))