linux-kernel - Re: [PATCH net-next v4 4/4] net: gro: move L3 flush checks to tcp_gro

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 26 Mar 2024 16:02:12 +0100
From: Richard Gobert <richardbgobert@...il.com>
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 willemdebruijn.kernel@...il.com, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net-next v4 4/4] net: gro: move L3 flush checks to
 tcp_gro_receive

Eric Dumazet wrote:
> 
> I do not understand this patch 4/4 then.
> 
> Why bother moving stuff in net/ipv4/tcp_offload.c if we plan to move
> it back to where it belongs ?

Willem also pointed that out, and I agree. I'll post a v5 and move this
functionality to gro.c. Currently, gro_network_flush will be called from
tcp_gro_receive and in a separate series I'll fix the bug by calling
gro_network_flush in skb_gro_receive or adding it to
udp_gro_receive_segment - whichever is better.

This patch is meaningful by itself - removing checks against non-relevant
packets and making the flush/flush_id checks in a single place.