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authorIdo Schimmel <idosch@mellanox.com>2017-08-03 13:28:25 +0200
committerDavid S. Miller <davem@davemloft.net>2017-08-04 00:36:00 +0200
commita460aa83963b185a32a6377eb486b6e613ac8e38 (patch)
tree03992757839f1f03ae32475f966e300f7addf432 /net/ipv6
parentipv6: Regenerate host route according to node pointer upon interface up (diff)
downloadlinux-a460aa83963b185a32a6377eb486b6e613ac8e38.tar.xz
linux-a460aa83963b185a32a6377eb486b6e613ac8e38.zip
ipv6: fib: Add helpers to hold / drop a reference on rt6_info
Similar to commit 1c677b3d2828 ("ipv4: fib: Add fib_info_hold() helper") and commit b423cb10807b ("ipv4: fib: Export free_fib_info()") add an helper to hold a reference on rt6_info and export rt6_release() to drop it and potentially release the route. This is needed so that drivers capable of FIB offload could hold a reference on the route before queueing it for offload and drop it after the route has been programmed to the device's tables. Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ip6_fib.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index fe193b48ef61..69ed0043d117 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -154,7 +154,7 @@ static void node_free(struct fib6_node *fn)
kmem_cache_free(fib6_node_kmem, fn);
}
-static void rt6_free_pcpu(struct rt6_info *non_pcpu_rt)
+void rt6_free_pcpu(struct rt6_info *non_pcpu_rt)
{
int cpu;
@@ -177,15 +177,7 @@ static void rt6_free_pcpu(struct rt6_info *non_pcpu_rt)
free_percpu(non_pcpu_rt->rt6i_pcpu);
non_pcpu_rt->rt6i_pcpu = NULL;
}
-
-static void rt6_release(struct rt6_info *rt)
-{
- if (atomic_dec_and_test(&rt->rt6i_ref)) {
- rt6_free_pcpu(rt);
- dst_dev_put(&rt->dst);
- dst_release(&rt->dst);
- }
-}
+EXPORT_SYMBOL_GPL(rt6_free_pcpu);
static void fib6_link_table(struct net *net, struct fib6_table *tb)
{