linux-kernel - Re: [PATCH net v5 0/3] mptcp: Fix conflicts between MPTCP and sockmap

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Message-Id: 
 <176307001100.1015375.9798268991526020883.git-patchwork-notify@kernel.org>
Date: Thu, 13 Nov 2025 21:40:11 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Jiayuan Chen <jiayuan.chen@...ux.dev>
Cc: mptcp@...ts.linux.dev, matttbe@...nel.org, martineau@...nel.org,
 geliang@...nel.org, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, horms@...nel.org, ast@...nel.org,
 daniel@...earbox.net, andrii@...nel.org, martin.lau@...ux.dev,
 eddyz87@...il.com, song@...nel.org, yonghong.song@...ux.dev,
 john.fastabend@...il.com, kpsingh@...nel.org, sdf@...ichev.me,
 haoluo@...gle.com, jolsa@...nel.org, shuah@...nel.org, cpaasch@...le.com,
 fw@...len.de, peter.krystad@...ux.intel.com, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org, bpf@...r.kernel.org, linux-kselftest@...r.kernel.org
Subject: Re: [PATCH net v5 0/3] mptcp: Fix conflicts between MPTCP and sockmap

Hello:

This series was applied to bpf/bpf.git (master)
by Martin KaFai Lau <martin.lau@...nel.org>:

On Tue, 11 Nov 2025 14:02:49 +0800 you wrote:
> Overall, we encountered a warning [1] that can be triggered by running the
> selftest I provided.
> 
> sockmap works by replacing sk_data_ready, recvmsg, sendmsg operations and
> implementing fast socket-level forwarding logic:
> 1. Users can obtain file descriptors through userspace socket()/accept()
>    interfaces, then call BPF syscall to perform these replacements.
> 2. Users can also use the bpf_sock_hash_update helper (in sockops programs)
>    to replace handlers when TCP connections enter ESTABLISHED state
>   (BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB/BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB)
> 
> [...]

Here is the summary with links:
  - [net,v5,1/3] mptcp: disallow MPTCP subflows from sockmap
    https://git.kernel.org/bpf/bpf/c/fbade4bd08ba
  - [net,v5,2/3] net,mptcp: fix proto fallback detection with BPF
    https://git.kernel.org/bpf/bpf/c/c77b3b79a92e
  - [net,v5,3/3] selftests/bpf: Add mptcp test with sockmap
    https://git.kernel.org/bpf/bpf/c/cb730e4ac1b4

You are awesome, thank you!
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