netdev - Re: [PATCH net-next v2 5/5] udp_tunnel: prevent GRO lookup optimization for user-space sockets

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Message-ID: <Z-LYY6xdo4XxFEB6@krikkit>
Date: Tue, 25 Mar 2025 17:22:59 +0100
From: Sabrina Dubroca <sd@...asysnail.net>
To: Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Simon Horman <horms@...nel.org>,
	Willem de Bruijn <willemdebruijn.kernel@...il.com>,
	David Ahern <dsahern@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>
Subject: Re: [PATCH net-next v2 5/5] udp_tunnel: prevent GRO lookup
 optimization for user-space sockets

2025-03-21, 12:52:56 +0100, Paolo Abeni wrote:
> UDP tunnel sockets owned by the kernel are never disconnected/rebound
> after setup_udp_tunnel_sock(), but sockets owned by the user-space could
> go through such changes after being matching the criteria to enable
> the GRO lookup optimization, breaking them.
> 
> Explicitly prevent user-space owned sockets from leveraging such
> optimization.
> 
> Signed-off-by: Paolo Abeni <pabeni@...hat.com>

Reviewed-by: Sabrina Dubroca <sd@...asysnail.net>

-- 
Sabrina