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Date: Fri, 13 May 2022 11:02:35 -0400 From: Xin Long <lucien.xin@...il.com> To: network dev <netdev@...r.kernel.org> Cc: davem@...emloft.net, kuba@...nel.org, Edward Cree <ecree@...arflare.com> Subject: [PATCHv2 net] 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. v1->v2: - Improved the description according to the suggestion from Edward and Jakub. Fixes: 323ebb61e32b ("net: use listified RX for handling GRO_NORMAL skbs") Reported-by: Prijesh Patel <prpatel@...hat.com> Signed-off-by: Xin Long <lucien.xin@...il.com> --- Documentation/admin-guide/sysctl/net.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/admin-guide/sysctl/net.rst b/Documentation/admin-guide/sysctl/net.rst index f86b5e1623c6..5cb99403bf03 100644 --- a/Documentation/admin-guide/sysctl/net.rst +++ b/Documentation/admin-guide/sysctl/net.rst @@ -374,6 +374,17 @@ 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 for GRO list-RX. 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 segments in this list count towards the +gro_normal_batch limit. + +Default : 8 + 2. /proc/sys/net/unix - Parameters for Unix domain sockets ---------------------------------------------------------- -- 2.31.1
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