mcast->backoff = HZ; 
mcast->backoff = 1; 
static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,					     int can_sleep){	struct ipoib_mcast *mcast;	mcast = kmalloc(sizeof (*mcast), can_sleep ? GFP_KERNEL : GFP_ATOMIC);	if (!mcast)		return NULL;	memset(mcast, 0, sizeof (*mcast));	init_completion(&mcast->done);	mcast->dev = dev;	mcast->created = jiffies;	mcast->backoff = HZ;	mcast->logcount = 0;	INIT_LIST_HEAD(&mcast->list);	INIT_LIST_HEAD(&mcast->neigh_list);	skb_queue_head_init(&mcast->pkt_queue);	mcast->ah    = NULL;	mcast->query = NULL;	return mcast;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/ce5b65cc9626feac0d4ffb96f798407e50c45575/ipoib_multicast.c/clean/drivers/infiniband/ulp/ipoib/ipoib_multicast.c