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ipv6: struct xfrm6_tunnel in read_mostly section 

tunnel6_handlers chain being scanned for each incoming packet,
make sure it doesnt share an often dirtied cache line.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2010-08-30 10:27:10 +00:00 committed by David S. Miller
parent 6dcd814bd0
commit 3ff2cfa55f
3 changed files with 6 additions and 6 deletions
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4
net/ipv6/ip6_tunnel.c
View File

@ -1372,13 +1372,13 @@ static void __net_init ip6_fb_tnl_dev_init(struct net_device *dev)
ip6n->tnls_wc[0] = t;
}
static struct xfrm6_tunnel ip4ip6_handler = {
static struct xfrm6_tunnel ip4ip6_handler __read_mostly = {
.handler = ip4ip6_rcv,
.err_handler = ip4ip6_err,
.priority = 1,
};
static struct xfrm6_tunnel ip6ip6_handler = {
static struct xfrm6_tunnel ip6ip6_handler __read_mostly = {
.handler = ip6ip6_rcv,
.err_handler = ip6ip6_err,
.priority = 1,

4
net/ipv6/tunnel6.c
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@ -30,8 +30,8 @@
#include <net/protocol.h>
#include <net/xfrm.h>
static struct xfrm6_tunnel *tunnel6_handlers;
static struct xfrm6_tunnel *tunnel46_handlers;
static struct xfrm6_tunnel *tunnel6_handlers __read_mostly;
static struct xfrm6_tunnel *tunnel46_handlers __read_mostly;
static DEFINE_MUTEX(tunnel6_mutex);
int xfrm6_tunnel_register(struct xfrm6_tunnel *handler, unsigned short family)

4
net/ipv6/xfrm6_tunnel.c
View File

@ -317,13 +317,13 @@ static const struct xfrm_type xfrm6_tunnel_type = {
.output = xfrm6_tunnel_output,
};
static struct xfrm6_tunnel xfrm6_tunnel_handler = {
static struct xfrm6_tunnel xfrm6_tunnel_handler __read_mostly = {
.handler = xfrm6_tunnel_rcv,
.err_handler = xfrm6_tunnel_err,
.priority = 2,
};
static struct xfrm6_tunnel xfrm46_tunnel_handler = {
static struct xfrm6_tunnel xfrm46_tunnel_handler __read_mostly = {
.handler = xfrm6_tunnel_rcv,
.err_handler = xfrm6_tunnel_err,
.priority = 2,