Re: [PATCH net] tcp: do not change rcv_ssthresh in tcp_measure_rcv_mss()

[email protected] Mon, 03 Aug 2026 21:30:10 +0000
Newsgroups org.kernel.vger.netdev,org.kernel.vger.linux-kernel
Message-ID <178579261039.2840566.9155529941452764214.git-patchwork-notify@kernel.org>
Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <[email protected]>:

On Fri, 24 Jul 2026 20:08:06 -0700 you wrote:
> Commit f5da7c45188e ("tcp: adjust rcvq_space after updating scaling
> ratio") replaced the direct window_clamp update in tcp_measure_rcv_mss()
> with a call to tcp_set_window_clamp(), a helper that implements the
> TCP_WINDOW_CLAMP setsockopt. As a side effect, the helper also shrinks
> rcv_ssthresh via __tcp_adjust_rcv_ssthresh().
> 
> As a result, each scaling_ratio decrease detected by
> tcp_measure_rcv_mss() also cuts rcv_ssthresh. Elsewhere in TCP,
> rcv_ssthresh is usually cut under memory pressure and grows via
> tcp_grow_window().
> 
> [...]

Here is the summary with links:
  - [net] tcp: do not change rcv_ssthresh in tcp_measure_rcv_mss()
    https://git.kernel.org/netdev/net/c/0e125ecfe20c

You are awesome, thank you!
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