/***
* rtskb_queue_tail
* @rtskb_head
*/
void rtskb_queue_tail(struct rtskb_head *list, struct rtskb *skb)
{
unsigned long flags;
flags = rt_spin_lock_irqsave(&list->lock);
__rtskb_queue_tail(list, skb);
rt_spin_unlock_irqrestore(flags, &list->lock);
}
static void __rtskb_pool_queue_tail(struct rtskb_pool *pool, struct rtskb *skb)
{
struct rtskb_queue *queue = &pool->queue;
__rtskb_queue_tail(queue,skb);
if (--pool->lock_count == 0)
pool->lock_ops->unlock(pool->lock_cookie);
}
/***
* rtskb_pool_init
*/
int rtskb_pool_init(void)
{
unsigned int i;
int err = 0;
struct rtskb* skb;
rtskb_queue_head_init(&rtskb_pool);
rtskb_cache = kmem_cache_create
(RTSKB_CACHE, sizeof (struct rtskb), 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
if ( !rtskb_cache ) {
rt_printk("RTnet: allocating 'rtskb_cache' failed.");
return -ENOMEM;
}
rtskb_data_cache = kmem_cache_create
(RTSKB_DATA_CACHE, SKB_DATA_ALIGN(rtskb_max_size), 0, SLAB_HWCACHE_ALIGN, NULL, NULL);
if ( !rtskb_data_cache ) {
rt_printk("RTnet: allocating 'rtskb_data_cache' failed.");
return -ENOMEM;
}
for (i=0; i<rtskb_pool_default; i++) {
skb = new_rtskb(); /* might return NULL */
if (skb) {
__rtskb_queue_tail(&rtskb_pool, skb);
} else {
printk("%s(): new_rtskb() returned NULL, qlen=%d\n", __FUNCTION__, rtskb_pool.qlen);
break;
}
}
if ( (inc_pool_srq=rt_request_srq (0, inc_pool_handler, 0)) < 0) {
rt_printk("RTnet: allocating 'inc_pool_srq=%d' failed.\n", inc_pool_srq);
return inc_pool_srq;
}
if ( (dec_pool_srq=rt_request_srq (0, dec_pool_handler, 0)) < 0) {
rt_printk("RTnet: allocating 'dec_pool_srq=%d' failed.\n", dec_pool_srq);
return dec_pool_srq;
}
return err;
}
