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[INET]: Consolidate xxx_frag_intern

Browse source 
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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Pavel Emelyanov 2007-10-17 19:44:34 -07:00 • committed by David S. Miller
commit 2588fe1d78
6 changed files with 82 additions and 96 deletions
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4
include/net/inet_frag.h
View file

@ -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)
{

3
include/net/ipv6.h
View file

@ -377,6 +377,9 @@ static inline int ipv6_prefix_equal(const struct in6_addr *a1,
prefixlen);
}
struct inet_frag_queue;
int ip6_frag_equal(struct inet_frag_queue *q1, struct inet_frag_queue *q2);
static inline int ipv6_addr_any(const struct in6_addr *a)
{
return ((a->s6_addr32[0] | a->s6_addr32[1] |