From: Neil Spring <ntspring@fb.com>
To: <davem@davemloft.net>, <edumazet@google.com>
Cc: <yoshfuji@linux-ipv6.org>, <dsahern@kernel.org>,
<kuba@kernel.org>, <netdev@vger.kernel.org>,
<ncardwell@google.com>, <ycheng@google.com>,
Neil Spring <ntspring@fb.com>
Subject: [net-next 0/1] tcp: support window clamp mid-stream
Date: Wed, 18 Aug 2021 14:23:30 -0700 [thread overview]
Message-ID: <20210818212331.3780069-1-ntspring@fb.com> (raw)
The TCP_WINDOW_CLAMP socket option is defined in tcp(7) to "Bound the size of
the advertised window to this value." Window clamping is distributed across two
variables, window_clamp ("Maximal window to advertise" in tcp.h) and rcv_ssthresh
("Current window clamp").
This patch updates the function where the window clamp is set to also reduce the current
window clamp, rcv_sshthresh, if needed. With this, setting the TCP_WINDOW_CLAMP option
has the documented effect of limiting the window.
Neil Spring (1):
tcp: enable mid stream window clamp
net/ipv4/tcp.c | 2 ++
1 file changed, 2 insertions(+)
--
2.30.2
next reply other threads:[~2021-08-18 21:23 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 21:23 Neil Spring [this message]
2021-08-18 21:23 ` [net 1/1] tcp: enable mid stream window clamp Neil Spring
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