netdev - Re: [PATCH net] ipv4: Use return value of inet_iif() for __raw_v4

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Date:   Tue, 25 Jun 2019 11:51:51 -0600
From:   David Ahern <dsahern@...il.com>
To:     Stephen Suryaputra <ssuryaextr@...il.com>, netdev@...r.kernel.org
Cc:     dsahern@...il.com
Subject: Re: [PATCH net] ipv4: Use return value of inet_iif() for
 __raw_v4_lookup in the while loop

On 6/24/19 6:14 PM, Stephen Suryaputra wrote:
> In commit 19e4e768064a8 ("ipv4: Fix raw socket lookup for local
> traffic"), the dif argument to __raw_v4_lookup() is coming from the
> returned value of inet_iif() but the change was done only for the first
> lookup. Subsequent lookups in the while loop still use skb->dev->ifIndex.
> 
> Signed-off-by: Stephen Suryaputra <ssuryaextr@...il.com>
> ---
>  net/ipv4/raw.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
> index 0b8e06ca75d6..40a6abbc9cf6 100644
> --- a/net/ipv4/raw.c
> +++ b/net/ipv4/raw.c
> @@ -197,7 +197,7 @@ static int raw_v4_input(struct sk_buff *skb, const struct iphdr *iph, int hash)
>  		}
>  		sk = __raw_v4_lookup(net, sk_next(sk), iph->protocol,
>  				     iph->saddr, iph->daddr,
> -				     skb->dev->ifindex, sdif);
> +				     dif, sdif);
>  	}
>  out:
>  	read_unlock(&raw_v4_hashinfo.lock);
> 

ugh, missed that in 19e4e768064a8; thanks for the patch.

Reviewed-by: David Ahern <dsahern@...il.com>