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

From: patchwork-bot+netdevbpf

Date: Mon Aug 03 2026 - 17:33:39 EST


Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

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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