Documentation: ip-sysctl.txt: Document tcp_fwmark_accept

This patch documents the tcp_fwmark_accept sysctl that was
added in 3.15.

Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lorenzo Colitti 2018-10-29 09:30:29 +09:00 committed by David S. Miller
parent 414dd6fb9a
commit e2d00e62f2

View file

@ -316,6 +316,17 @@ tcp_frto - INTEGER
By default it's enabled with a non-zero value. 0 disables F-RTO.
tcp_fwmark_accept - BOOLEAN
If set, incoming connections to listening sockets that do not have a
socket mark will set the mark of the accepting socket to the fwmark of
the incoming SYN packet. This will cause all packets on that connection
(starting from the first SYNACK) to be sent with that fwmark. The
listening socket's mark is unchanged. Listening sockets that already
have a fwmark set via setsockopt(SOL_SOCKET, SO_MARK, ...) are
unaffected.
Default: 0
tcp_invalid_ratelimit - INTEGER
Limit the maximal rate for sending duplicate acknowledgments
in response to incoming TCP packets that are for an existing