From: Guillaume Nault Date: Wed, 27 Jul 2022 11:18:21 +0000 (+0200) Subject: Documentation: Describe net.ipv4.tcp_reflect_tos. X-Git-Tag: block-6.0-2022-08-12~31^2~28 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=1c7249e4af8e1aea1c47739ec9dc63cc828b5d08;p=linux-2.6-block.git Documentation: Describe net.ipv4.tcp_reflect_tos. The tcp_reflect_tos option was introduced in Linux 5.10 but was still undocumented. Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller --- diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst index 3c39776728b9..56cd4ea059b2 100644 --- a/Documentation/networking/ip-sysctl.rst +++ b/Documentation/networking/ip-sysctl.rst @@ -636,6 +636,16 @@ tcp_recovery - INTEGER Default: 0x1 +tcp_reflect_tos - BOOLEAN + For listening sockets, reuse the DSCP value of the initial SYN message + for outgoing packets. This allows to have both directions of a TCP + stream to use the same DSCP value, assuming DSCP remains unchanged for + the lifetime of the connection. + + This options affects both IPv4 and IPv6. + + Default: 0 (disabled) + tcp_reordering - INTEGER Initial reordering level of packets in a TCP stream. TCP stack can then dynamically adjust flow reordering level