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authorPaolo Abeni <pabeni@redhat.com>2016-02-12 17:43:57 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-17 04:21:48 +0300
commitd71785ffc7e7cae3fbdc4ea8a9d05b7a1c59f7b8 (patch)
tree142081880ca68e3f066df14ecfb2371b229e76fd /net/core/dst.c
parent0c1d70af924b966cc71e9e48920b2b635441aa50 (diff)
downloadlinux-d71785ffc7e7cae3fbdc4ea8a9d05b7a1c59f7b8.tar.xz
net: add dst_cache to ovs vxlan lwtunnel
In case of UDP traffic with datagram length below MTU this give about 2% performance increase when tunneling over ipv4 and about 60% when tunneling over ipv6 Signed-off-by: Paolo Abeni <pabeni@redhat.com> Suggested-and-acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/dst.c')
-rw-r--r--net/core/dst.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/net/core/dst.c b/net/core/dst.c
index a1656e3b8d72..b5cbbe07f786 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -265,7 +265,7 @@ again:
lwtstate_put(dst->lwtstate);
if (dst->flags & DST_METADATA)
- kfree(dst);
+ metadata_dst_free((struct metadata_dst *)dst);
else
kmem_cache_free(dst->ops->kmem_cachep, dst);
@@ -395,6 +395,14 @@ struct metadata_dst *metadata_dst_alloc(u8 optslen, gfp_t flags)
}
EXPORT_SYMBOL_GPL(metadata_dst_alloc);
+void metadata_dst_free(struct metadata_dst *md_dst)
+{
+#ifdef CONFIG_DST_CACHE
+ dst_cache_destroy(&md_dst->u.tun_info.dst_cache);
+#endif
+ kfree(md_dst);
+}
+
struct metadata_dst __percpu *metadata_dst_alloc_percpu(u8 optslen, gfp_t flags)
{
int cpu;