From 582a2dbc72ac5dd2b3ae4f75bccd4b4c73bb0e1f Mon Sep 17 00:00:00 2001 From: Xin Long Date: Wed, 18 May 2022 12:09:15 -0400 Subject: [PATCH] Documentation: add description for net.core.gro_normal_batch Describe it in admin-guide/sysctl/net.rst like other Network core options. Users need to know gro_normal_batch for performance tuning. Fixes: 323ebb61e32b ("net: use listified RX for handling GRO_NORMAL skbs") Reported-by: Prijesh Patel Signed-off-by: Xin Long Reviewed-by: Edward Cree Link: https://lore.kernel.org/r/acf8a2c03b91bcde11f67ff89b6050089c0712a3.1652888963.git.lucien.xin@gmail.com Signed-off-by: Jakub Kicinski --- Documentation/admin-guide/sysctl/net.rst | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/admin-guide/sysctl/net.rst b/Documentation/admin-guide/sysctl/net.rst index f86b5e1623c69..46b44fa82fa25 100644 --- a/Documentation/admin-guide/sysctl/net.rst +++ b/Documentation/admin-guide/sysctl/net.rst @@ -374,6 +374,15 @@ option is set to SOCK_TXREHASH_DEFAULT (i. e. not overridden by setsockopt). If set to 1 (default), hash rethink is performed on listening socket. If set to 0, hash rethink is not performed. +gro_normal_batch +---------------- + +Maximum number of the segments to batch up on output of GRO. When a packet +exits GRO, either as a coalesced superframe or as an original packet which +GRO has decided not to coalesce, it is placed on a per-NAPI list. This +list is then passed to the stack when the number of segments reaches the +gro_normal_batch limit. + 2. /proc/sys/net/unix - Parameters for Unix domain sockets ---------------------------------------------------------- -- 2.30.2