inet: frags: use kmem_cache for inet_frag_queue

Use kmem_cache to allocate/free inet_frag_queue objects since they're
all the same size per inet_frags user and are alloced/freed in high volumes
thus making it a perfect case for kmem_cache.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index cb56bcc1eee2..15f0e2bad7ad 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -55,6 +55,7 @@
  */
 
 static int sysctl_ipfrag_max_dist __read_mostly = 64;
+static const char ip_frag_cache_name[] = "ip4-frags";
 
 struct ipfrag_skb_cb
 {
@@ -860,5 +861,7 @@ void __init ipfrag_init(void)
         ip4_frags.qsize = sizeof(struct ipq);
         ip4_frags.match = ip4_frag_match;
         ip4_frags.frag_expire = ip_expire;
-        inet_frags_init(&ip4_frags);
+        ip4_frags.frags_cache_name = ip_frag_cache_name;
+        if (inet_frags_init(&ip4_frags))
+                panic("IP: failed to allocate ip4_frags cache\n");
 }