From e3d73bcedfdf66d21349fee00241b0931d28a943 Mon Sep 17 00:00:00 2001 From: Cong Wang <amwang@redhat.com> Date: Tue, 11 Jun 2013 18:54:39 +0800 Subject: [PATCH] net: add doc for ip_early_demux sysctl commit 6648bd7e0e62c0c8c03b (ipv4: Add sysctl knob to control early socket demux) introduced such sysctl, but forgot to add doc into Documentation/networking/ip-sysctl.txt. This patch adds it. Basically I grab the doc from the description of commit 41063e9dd11956f2d285 (ipv4: Early TCP socket demux.) and the above commit. Cc: Eric Dumazet <edumazet@google.com> Cc: Alexander Duyck <alexander.h.duyck@intel.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> --- Documentation/networking/ip-sysctl.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index 9cea5d3b3c50..36e5a402ed0e 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -685,6 +685,15 @@ ip_dynaddr - BOOLEAN occurs. Default: 0 +ip_early_demux - BOOLEAN + Optimize input packet processing down to one demux for + certain kinds of local sockets. Currently we only do this + for established TCP sockets. + + It may add an additional cost for pure routing workloads that + reduces overall throughput, in such case you should disable it. + Default: 1 + icmp_echo_ignore_all - BOOLEAN If set non-zero, then the kernel will ignore all ICMP ECHO requests sent to it. -- GitLab