From: Arnd Bergmann Date: Tue, 13 Jan 2015 14:10:27 +0000 (+0100) Subject: bridge: only provide proxy ARP when CONFIG_INET is enabled X-Git-Tag: MMI-PSA29.97-13-9~10824^2~6 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d92cfdbbeaefb467de4fac98679fa6c33461d250;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git bridge: only provide proxy ARP when CONFIG_INET is enabled When IPV4 support is disabled, we cannot call arp_send from the bridge code, which would result in a kernel link error: net/built-in.o: In function `br_handle_frame_finish': :(.text+0x59914): undefined reference to `arp_send' :(.text+0x59a50): undefined reference to `arp_tbl' This makes the newly added proxy ARP support in the bridge code depend on the CONFIG_INET symbol and lets the compiler optimize the code out to avoid the link error. Signed-off-by: Arnd Bergmann Fixes: 958501163ddd ("bridge: Add support for IEEE 802.11 Proxy ARP") Cc: Kyeyoon Park Signed-off-by: David S. Miller --- diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 1f1de715197c..e2aa7be3a847 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -154,7 +154,8 @@ int br_handle_frame_finish(struct sk_buff *skb) dst = NULL; if (is_broadcast_ether_addr(dest)) { - if (p->flags & BR_PROXYARP && + if (IS_ENABLED(CONFIG_INET) && + p->flags & BR_PROXYARP && skb->protocol == htons(ETH_P_ARP)) br_do_proxy_arp(skb, br, vid);