netdev - Re: [PATCH net] udp: fix SO

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Message-ID: <4e7b728a-2657-b171-e02b-81e7a9443c6a@gmail.com>
Date:   Wed, 9 May 2018 09:18:32 -0600
From:   David Ahern <dsahern@...il.com>
To:     Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Cc:     Damir Mansurov <dnman@...etlabs.ru>,
        David Miller <davem@...emloft.net>
Subject: Re: [PATCH net] udp: fix SO_BINDTODEVICE

On 5/9/18 4:42 AM, Paolo Abeni wrote:
> Damir reported a breakage of SO_BINDTODEVICE for UDP sockets.
> In absence of VRF devices, after commit fb74c27735f0 ("net:
> ipv4: add second dif to udp socket lookups") the dif mismatch
> isn't fatal anymore for UDP socket lookup with non null
> sk_bound_dev_if, breaking SO_BINDTODEVICE semantics.
> 
> This changeset addresses the issue making the dif match mandatory
> again in the above scenario.
> 
> Reported-by: Damir Mansurov <dnman@...etlabs.ru>
> Fixes: fb74c27735f0 ("net: ipv4: add second dif to udp socket lookups")
> Fixes: 1801b570dd2a ("net: ipv6: add second dif to udp socket lookups")
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>
> ---
>  net/ipv4/udp.c | 4 ++--
>  net/ipv6/udp.c | 4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)
> 

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