[Bridge] [PATCH] bridge: only provide proxy ARP when CONFIG_INET is enabled

Cong Wang
Tue, 13 Jan 2015 19:25:45 -0000

On Tue, Jan 13, 2015 at 6:10 AM, Arnd Bergmann <arnd at arndb.de>
wrote:
> 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.
>

Not sure how much sense to make CONFIG_BRIDGE depend
on CONFIG_INET, at least CONFIG_BONDING does.