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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2007-04-24 20:44:48 +0900
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:29:56 -0700
commit5056a1ef9e2597cff7b15904fbc74193f316fc40 (patch)
tree9acec59c0ee92a7285d680592fc1da37fd8977af /net/ipv4/ip_gre.c
parent87d1a164df0b5e297cda698724ea7984d8392b06 (diff)
downloadlinux-5056a1ef9e2597cff7b15904fbc74193f316fc40.tar.bz2
[IPV4] IP_GRE: Unify code path to get hash array index.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Diffstat (limited to 'net/ipv4/ip_gre.c')
-rw-r--r--net/ipv4/ip_gre.c23
1 files changed, 10 insertions, 13 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f49afaa81298..63282934725e 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -191,11 +191,11 @@ static struct ip_tunnel * ipgre_tunnel_lookup(__be32 remote, __be32 local, __be3
return NULL;
}
-static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
+static struct ip_tunnel **__ipgre_bucket(struct ip_tunnel_parm *parms)
{
- __be32 remote = t->parms.iph.daddr;
- __be32 local = t->parms.iph.saddr;
- __be32 key = t->parms.i_key;
+ __be32 remote = parms->iph.daddr;
+ __be32 local = parms->iph.saddr;
+ __be32 key = parms->i_key;
unsigned h = HASH(key);
int prio = 0;
@@ -209,6 +209,11 @@ static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
return &tunnels[prio][h];
}
+static inline struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
+{
+ return __ipgre_bucket(&t->parms);
+}
+
static void ipgre_tunnel_link(struct ip_tunnel *t)
{
struct ip_tunnel **tp = ipgre_bucket(t);
@@ -240,17 +245,9 @@ static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int
__be32 key = parms->i_key;
struct ip_tunnel *t, **tp, *nt;
struct net_device *dev;
- unsigned h = HASH(key);
- int prio = 0;
char name[IFNAMSIZ];
- if (local)
- prio |= 1;
- if (remote && !MULTICAST(remote)) {
- prio |= 2;
- h ^= HASH(remote);
- }
- for (tp = &tunnels[prio][h]; (t = *tp) != NULL; tp = &t->next) {
+ for (tp = __ipgre_bucket(parms); (t = *tp) != NULL; tp = &t->next) {
if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) {
if (key == t->parms.i_key)
return t;