Re: [PATCH 07/15] ipv4: Adjust semantics of rt->rt_gateway.

[Joe Perches <joe@perches.com>]

On Wed, 2012-07-18 at 11:23 -0700, David Miller wrote:
> In order to allow prefixed routes, we have to adjust how rt_gateway
> is set an interpreted.

typo an/and and a trivial style note:

> diff --git a/net/ipv4/route.c b/net/ipv4/route.c
[]
> @@ -1079,8 +1079,10 @@ void ip_rt_get_source(u8 *addr, struct sk_buff *skb, struct rtable *rt)
>  		if (fib_lookup(dev_net(rt->dst.dev), &fl4, &res) == 0)
>  			src = FIB_RES_PREFSRC(dev_net(rt->dst.dev), res);
>  		else
> -			src = inet_select_addr(rt->dst.dev, rt->rt_gateway,
> -					RT_SCOPE_UNIVERSE);
> +			src = inet_select_addr(rt->dst.dev, (rt->rt_gateway ?
> +							     rt->rt_gateway :
> +							     iph->daddr),
> +					       RT_SCOPE_UNIVERSE);

maybe use the moderately common gcc ?: extension

			src = inet_select_addr(rt->dst.dev,
					       rt->rt_gateway ?: iph->daddr,
					       RT_SCOPE_UNIVERSE);