[INET]: Consolidate xxx_frag_intern

This routine checks for the existence of a given entry
in the hash table and inserts the new one if needed.

The ->equal callback is used to compare two frag_queue-s
together, but this one is temporary and will be removed
later. The netfilter code and the ipv6 one use the same
routine to compare frags.

The inet_frag_intern() always returns non-NULL pointer,
so convert the inet_frag_queue into protocol specific
one (with the container_of) without any checks.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 911c2cd02941..133e187fbc98 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -41,6 +41,8 @@ struct inet_frags {
         unsigned int            (*hashfn)(struct inet_frag_queue *);
         void                    (*destructor)(struct inet_frag_queue *);
         void                    (*skb_free)(struct sk_buff *);
+        int                     (*equal)(struct inet_frag_queue *q1,
+                                         struct inet_frag_queue *q2);
 };
 
 void inet_frags_init(struct inet_frags *);
@@ -50,6 +52,8 @@ void inet_frag_kill(struct inet_frag_queue *q, struct inet_frags *f);
 void inet_frag_destroy(struct inet_frag_queue *q,
                                 struct inet_frags *f, int *work);
 int inet_frag_evictor(struct inet_frags *f);
+struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *q,
+                struct inet_frags *f, unsigned int hash);
 
 static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
 {