Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[pandora-kernel.git] / net / xfrm / xfrm_policy.c

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 552df27..9049a5c 100644 (file)
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2276,8 +2276,6 @@ static void __xfrm_garbage_collect(struct net *net)
 {
        struct dst_entry *head, *next;
 
-       flow_cache_flush();
-
        spin_lock_bh(&xfrm_policy_sk_bundle_lock);
        head = xfrm_policy_sk_bundles;
        xfrm_policy_sk_bundles = NULL;
@@ -2290,6 +2288,18 @@ static void __xfrm_garbage_collect(struct net *net)
        }
 }
 
+static void xfrm_garbage_collect(struct net *net)
+{
+       flow_cache_flush();
+       __xfrm_garbage_collect(net);
+}
+
+static void xfrm_garbage_collect_deferred(struct net *net)
+{
+       flow_cache_flush_deferred();
+       __xfrm_garbage_collect(net);
+}
+
 static void xfrm_init_pmtu(struct dst_entry *dst)
 {
        do {
@@ -2382,9 +2392,11 @@ static unsigned int xfrm_default_advmss(const struct dst_entry *dst)
        return dst_metric_advmss(dst->path);
 }
 
-static unsigned int xfrm_default_mtu(const struct dst_entry *dst)
+static unsigned int xfrm_mtu(const struct dst_entry *dst)
 {
-       return dst_mtu(dst->path);
+       unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);
+
+       return mtu ? : dst_mtu(dst->path);
 }
 
 static struct neighbour *xfrm_neigh_lookup(const struct dst_entry *dst, const void *daddr)
@@ -2411,8 +2423,8 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
                        dst_ops->check = xfrm_dst_check;
                if (likely(dst_ops->default_advmss == NULL))
                        dst_ops->default_advmss = xfrm_default_advmss;
-               if (likely(dst_ops->default_mtu == NULL))
-                       dst_ops->default_mtu = xfrm_default_mtu;
+               if (likely(dst_ops->mtu == NULL))
+                       dst_ops->mtu = xfrm_mtu;
                if (likely(dst_ops->negative_advice == NULL))
                        dst_ops->negative_advice = xfrm_negative_advice;
                if (likely(dst_ops->link_failure == NULL))
@@ -2420,7 +2432,7 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
                if (likely(dst_ops->neigh_lookup == NULL))
                        dst_ops->neigh_lookup = xfrm_neigh_lookup;
                if (likely(afinfo->garbage_collect == NULL))
-                       afinfo->garbage_collect = __xfrm_garbage_collect;
+                       afinfo->garbage_collect = xfrm_garbage_collect_deferred;
                xfrm_policy_afinfo[afinfo->family] = afinfo;
        }
        write_unlock_bh(&xfrm_policy_afinfo_lock);
@@ -2514,7 +2526,7 @@ static int xfrm_dev_event(struct notifier_block *this, unsigned long event, void
 
        switch (event) {
        case NETDEV_DOWN:
-               __xfrm_garbage_collect(dev_net(dev));
+               xfrm_garbage_collect(dev_net(dev));
        }
        return NOTIFY_DONE;
 }