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[INET]: Consolidate xxx_frag_alloc()

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Just perform the kzalloc() allocation and setup common
fields in the inet_frag_queue(). Then return the result
to the caller to initialize the rest.

The inet_frag_alloc() may return NULL, so check the 
return value before doing the container_of(). This looks 
ugly, but the xxx_frag_alloc() will be removed soon.

The xxx_expire() timer callbacks are patches, 
because the argument is now the inet_frag_queue, not 
the protocol specific queue.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2007-10-17 19:45:23 -07:00 • committed by David S. Miller
parent 2588fe1d78
commit e521db9d79
5 changed files with 41 additions and 36 deletions
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17
net/ipv4/inet_fragment.c
View file

@ -209,3 +209,20 @@ struct inet_frag_queue *inet_frag_intern(struct inet_frag_queue *qp_in,
return qp;
}
EXPORT_SYMBOL(inet_frag_intern);
struct inet_frag_queue *inet_frag_alloc(struct inet_frags *f)
{
struct inet_frag_queue *q;
q = kzalloc(f->qsize, GFP_ATOMIC);
if (q == NULL)
return NULL;
atomic_add(f->qsize, &f->mem);
setup_timer(&q->timer, f->frag_expire, (unsigned long)q);
spin_lock_init(&q->lock);
atomic_set(&q->refcnt, 1);
return q;
}
EXPORT_SYMBOL(inet_frag_alloc);