[IPV4] IP_GRE: Unify code path to get hash array index.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index f49afaa..6328293 100644 (file)
--- 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;