netdev - Re: [PATCH][net-next] ipv4: unnecessary to set err on no

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Message-ID: <5429490D.1000004@cogentembedded.com>
Date:	Mon, 29 Sep 2014 15:57:01 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	roy.qing.li@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH][net-next] ipv4: unnecessary to set err on no_route path

Hello.

On 9/29/2014 1:16 PM, roy.qing.li@...il.com wrote:

> From: Li RongQing <roy.qing.li@...il.com>

> When the code skips to no_route label, it will skip to local_input at last,
> then err will be reset on the local_input path before exit function.

> Signed-off-by: Li RongQing <roy.qing.li@...il.com>
> ---
>   net/ipv4/route.c |   11 ++++-------
>   1 file changed, 4 insertions(+), 7 deletions(-)

> diff --git a/net/ipv4/route.c b/net/ipv4/route.c
> index d4bd68d..403914b 100644
> --- a/net/ipv4/route.c
> +++ b/net/ipv4/route.c
> @@ -1704,11 +1704,9 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
>   	fl4.daddr = daddr;
>   	fl4.saddr = saddr;
>   	err = fib_lookup(net, &fl4, &res);
> -	if (err != 0) {
> -		if (!IN_DEV_FORWARD(in_dev))
> -			err = -EHOSTUNREACH;
> +	if (err != 0)
>   		goto no_route;
> -	}
> +

    This extra empty line is not needed.

>
>   	if (res.type == RTN_BROADCAST)
>   		goto brd_input;

WBR, Sergei

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