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| author | Vlad Buslov <vladbu@mellanox.com> | 2019-11-04 18:34:49 +0200 |
|---|---|---|
| committer | Simon Horman <simon.horman@netronome.com> | 2019-11-11 14:42:52 +0100 |
| commit | 292d5bd9bb344527e0da19433cf3e51f8a24058c (patch) | |
| tree | 944a9c08109601c218322292e5bf149abc6b63c7 /acinclude.m4 | |
| parent | c0a1df2e3f209fbf3c61b66a719b90e41636ef52 (diff) | |
| download | openvswitch-292d5bd9bb344527e0da19433cf3e51f8a24058c.tar.gz | |
tc: Set 'no_percpu' flag for compatible actions
Recent changes in Linux kernel TC action subsystem introduced new
TCA_ACT_FLAGS_NO_PERCPU_STATS flag. The purpose of the flag is to request
action implementation to skip allocating action stats with expensive percpu
allocator and use regular built-in action stats instead. Such approach
significantly improves rule insertion rate and reduce memory usage for
hardware-offloaded rules that don't need benefits provided by percpu
allocated stats (improved software TC fast-path performance). Set the flag
for all compatible actions.
Modify acinclude.m4 to use OVS-internal pkt_cls.h implementation when
TCA_ACT_FLAGS is not defined by kernel headers and to manually define
struct nla_bitfield32 in netlink.h (new file) when it is not defined by
kernel headers.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index bc5b1c667..fc6157ac8 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -174,16 +174,28 @@ AC_DEFUN([OVS_CHECK_LINUX], [ AM_CONDITIONAL(LINUX_ENABLED, test -n "$KBUILD") ]) +dnl OVS_CHECK_LINUX_NETLINK +dnl +dnl Configure Linux netlink compat. +AC_DEFUN([OVS_CHECK_LINUX_NETLINK], [ + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([#include <linux/netlink.h>], [ + struct nla_bitfield32 x = { 0 }; + ])], + [AC_DEFINE([HAVE_NLA_BITFIELD32], [1], + [Define to 1 if struct nla_bitfield32 is available.])]) +]) + dnl OVS_CHECK_LINUX_TC dnl dnl Configure Linux tc compat. AC_DEFUN([OVS_CHECK_LINUX_TC], [ AC_COMPILE_IFELSE([ AC_LANG_PROGRAM([#include <linux/pkt_cls.h>], [ - int x = TCA_FLOWER_KEY_ENC_IP_TTL_MASK; + int x = TCA_ACT_FLAGS; ])], - [AC_DEFINE([HAVE_TCA_FLOWER_KEY_ENC_IP_TTL_MASK], [1], - [Define to 1 if TCA_FLOWER_KEY_ENC_IP_TTL_MASK is available.])]) + [AC_DEFINE([HAVE_TCA_ACT_FLAGS], [1], + [Define to 1 if TCA_ACT_FLAGS is available.])]) AC_CHECK_MEMBERS([struct tcf_t.firstuse], [], [], [#include <linux/pkt_cls.h>]) |