void ccci_free_req(struct ccci_request *req)
{
unsigned long flags;
CCCI_DBG_MSG(-1, BM, "%ps free req=%p, policy=%d, skb=%p, len=%d\n", __builtin_return_address(0),
req, req->policy, req->skb, skb_size(req->skb));
if(req->skb)
ccci_free_skb(req->skb, req->policy);
spin_lock_irqsave(&req_pool_lock, flags);
// 1. reset the request
req->state = IDLE;
req->skb = NULL;
/*
* do NOT reset req->entry here, always maitain it by list API (list_del).
* for Tx requests, they are never in any queue, so no extra effort when delete them.
* but for Rx request, we must make sure list_del is called once before we free them.
*/
if(req->entry.next != LIST_POISON1 || req->entry.prev != LIST_POISON2) {
CCCI_ERR_MSG(-1, BM, "req %p entry not deleted yet, from %ps\n", req, __builtin_return_address(0));
list_del(&req->entry);
}
// 2. wake up pending allocation
req_pool_cnt++;
CCCI_DBG_MSG(-1, BM, "pool count+=%d\n", req_pool_cnt);
spin_unlock_irqrestore(&req_pool_lock, flags);
wake_up_all(&req_pool_wq);
}
void ccci_free_req(struct ccci_request *req)
{
CCCI_DBG_MSG(-1, BM, "%ps free req=%p, policy=%d, skb=%p\n", __builtin_return_address(0),
req, req->policy, req->skb);
if(req->skb)
ccci_free_skb(req->skb, req->policy);
if(req->entry.next != LIST_POISON1 || req->entry.prev != LIST_POISON2) {
CCCI_ERR_MSG(-1, BM, "req %p entry not deleted yet, from %ps\n", req, __builtin_return_address(0));
list_del(&req->entry);
}
ccci_req_enqueue(&req_pool, req);
wake_up_all(&req_pool.req_wq);
}
