[INET]: Consolidate the xxx_frag_destroy
To make in possible we need to know the exact frag queue
size for inet_frags->mem management and two callbacks:
* to destoy the skb (optional, used in conntracks only)
* to free the queue itself (mandatory, but later I plan to
move the allocation and the destruction of frag_queues
into the common place, so this callback will most likely
be optional too).
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index c7d4961..940b7d2 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -152,12 +152,9 @@
kfree_skb(skb);
}
-static inline void frag_free_queue(struct frag_queue *fq, int *work)
+static void ip6_frag_free(struct inet_frag_queue *fq)
{
- if (work)
- *work -= sizeof(struct frag_queue);
- atomic_sub(sizeof(struct frag_queue), &ip6_frags.mem);
- kfree(fq);
+ kfree(container_of(fq, struct frag_queue, q));
}
static inline struct frag_queue *frag_alloc_queue(void)
@@ -172,30 +169,10 @@
/* Destruction primitives. */
-/* Complete destruction of fq. */
-static void ip6_frag_destroy(struct frag_queue *fq, int *work)
-{
- struct sk_buff *fp;
-
- BUG_TRAP(fq->q.last_in&COMPLETE);
- BUG_TRAP(del_timer(&fq->q.timer) == 0);
-
- /* Release all fragment data. */
- fp = fq->q.fragments;
- while (fp) {
- struct sk_buff *xp = fp->next;
-
- frag_kfree_skb(fp, work);
- fp = xp;
- }
-
- frag_free_queue(fq, work);
-}
-
static __inline__ void fq_put(struct frag_queue *fq, int *work)
{
if (atomic_dec_and_test(&fq->q.refcnt))
- ip6_frag_destroy(fq, work);
+ inet_frag_destroy(&fq->q, &ip6_frags, work);
}
/* Kill fq entry. It is not destroyed immediately,
@@ -744,5 +721,8 @@
ip6_frags.ctl = &ip6_frags_ctl;
ip6_frags.hashfn = ip6_hashfn;
+ ip6_frags.destructor = ip6_frag_free;
+ ip6_frags.skb_free = NULL;
+ ip6_frags.qsize = sizeof(struct frag_queue);
inet_frags_init(&ip6_frags);
}