netdev - Re: [PATCH net] udp: fix l4 hash after reconnect

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Message-ID: <CANn89i+aKNhzYKo3H3gx5Uhy4iPQ4p=6WDDF-0brGyR=PzJqjQ@mail.gmail.com>
Date: Fri, 6 Dec 2024 16:57:05 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, 
	David Ahern <dsahern@...nel.org>, Jakub Kicinski <kuba@...nel.org>, Simon Horman <horms@...nel.org>, 
	Fred Chen <fred.cc@...baba-inc.com>, Cambda Zhu <cambda@...ux.alibaba.com>, 
	Willem de Bruijn <willemb@...gle.com>, Philo Lu <lulie@...ux.alibaba.com>, 
	Stefano Brivio <sbrivio@...hat.com>
Subject: Re: [PATCH net] udp: fix l4 hash after reconnect

On Fri, Dec 6, 2024 at 4:50 PM Paolo Abeni <pabeni@...hat.com> wrote:
>
> After the blamed commit below, udp_rehash() is supposed to be called
> with both local and remote addresses set.
>
> Currently that is already the case for IPv6 sockets, but for IPv4 the
> destination address is updated after rehashing.
>
> Address the issue moving the destination address and port initialization
> before rehashing.
>
> Fixes: 1b29a730ef8b ("ipv6/udp: Add 4-tuple hash for connected socket")
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>

Nice catch, thanks !

Reviewed-by: Eric Dumazet <edumazet@...gle.com>