Re: [PATCH v2 net-next 1/1] tcp: Replace min_tso_segs() with tso_segs() CC callback for TCP Prague

On Mon, 15 Jun 2026 18:51:02 -0700 Jakub Kicinski wrote:

On Sun, 14 Jun 2026 09:17:56 +0200 chia-yu.chang@nokia-bell-labs.com
wrote:

quoted

This patch replaces existing min_tso_segs() with tso_segs() CC callbak
for CC algorithm to provides explicit tso segment number of each data
burst and overrides tcp_tso_autosize().

No functional change.  

Eric, Neal, looks good?

The min rtt thing in tcp_tso_autosize() helps a bit but if the sender
gets congested for a longer stretch min_rtts on new connections are
high and we're back to sending small TSO, keeping the sender overloaded.
Which is to say - I _hope_ this also solves some of Meta's problems :)

Ugh, I didn't see the Sashiko report, it's only CCed to the author and
bpf@, not to netdev :/

The zero-check sounds legit. Let's revisit this after the merge window.