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

David Miller davem at davemloft.net
Tue Jan 13 20:57:40 UTC 2015

From: Cong Wang <cwang at twopensource.com>
Date: Tue, 13 Jan 2015 11:25:45 -0800

> 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.

It depends upon whether we want to provide and consider
as a valid configuration bridging without INET.  Probably
we do.

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