netdev - [PATCH net-next 0/2] tcp: tcp_rcvbuf

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251117132802.2083206-1-edumazet@google.com>
Date: Mon, 17 Nov 2025 13:28:00 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, Neal Cardwell <ncardwell@...gle.com>, 
	Kuniyuki Iwashima <kuniyu@...gle.com>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH net-next 0/2] tcp: tcp_rcvbuf_grow() changes

First pach is minor and moves tcp_moderate_rcvbuf in appropriate group.

Second patch is another attempt to keep small sk->sk_rcvbuf for DC
(small RT) TCP flows for optimal performance.

Eric Dumazet (2):
  tcp: tcp_moderate_rcvbuf is only used in rx path
  tcp: add net.ipv4.tcp_rtt_threshold sysctl

 Documentation/networking/ip-sysctl.rst         | 10 ++++++++++
 .../net_cachelines/netns_ipv4_sysctl.rst       |  3 ++-
 include/net/netns/ipv4.h                       |  3 ++-
 net/core/net_namespace.c                       | 11 ++++-------
 net/ipv4/sysctl_net_ipv4.c                     |  9 +++++++++
 net/ipv4/tcp_input.c                           | 18 ++++++++++++++----
 net/ipv4/tcp_ipv4.c                            |  1 +
 7 files changed, 42 insertions(+), 13 deletions(-)

-- 
2.52.0.rc1.455.g30608eb744-goog