33 				       struct request_sock *req);
35 				    struct request_sock *req);
38 	void		(*destructor)(struct request_sock *req);
39 	void		(*syn_ack_timeout)(const struct request_sock *req);
42 int inet_rtx_syn_ack(const struct sock *parent, struct request_sock *req);
80 static inline struct sock *req_to_sk(struct request_sock *req)  in req_to_sk()  argument
82 	return (struct sock *)req;  in req_to_sk()
89 	struct request_sock *req;  in reqsk_alloc()  local
91 	req = kmem_cache_alloc(ops->slab, GFP_ATOMIC | __GFP_NOWARN);  in reqsk_alloc()
92 	if (!req)  in reqsk_alloc()
94 	req->rsk_listener = NULL;  in reqsk_alloc()
97 			kmem_cache_free(ops->slab, req);  in reqsk_alloc()
100 		req->rsk_listener = sk_listener;  in reqsk_alloc()
102 	req->rsk_ops = ops;  in reqsk_alloc()
103 	req_to_sk(req)->sk_prot = sk_listener->sk_prot;  in reqsk_alloc()
104 	sk_node_init(&req_to_sk(req)->sk_node);  in reqsk_alloc()
105 	sk_tx_queue_clear(req_to_sk(req));  in reqsk_alloc()
106 	req->saved_syn = NULL;  in reqsk_alloc()
107 	req->num_timeout = 0;  in reqsk_alloc()
108 	req->num_retrans = 0;  in reqsk_alloc()
109 	req->sk = NULL;  in reqsk_alloc()
110 	refcount_set(&req->rsk_refcnt, 0);  in reqsk_alloc()
112 	return req;  in reqsk_alloc()
115 static inline void __reqsk_free(struct request_sock *req)  in __reqsk_free()  argument
117 	req->rsk_ops->destructor(req);  in __reqsk_free()
118 	if (req->rsk_listener)  in __reqsk_free()
119 		sock_put(req->rsk_listener);  in __reqsk_free()
120 	kfree(req->saved_syn);  in __reqsk_free()
121 	kmem_cache_free(req->rsk_ops->slab, req);  in __reqsk_free()
124 static inline void reqsk_free(struct request_sock *req)  in reqsk_free()  argument
126 	WARN_ON_ONCE(refcount_read(&req->rsk_refcnt) != 0);  in reqsk_free()
127 	__reqsk_free(req);  in reqsk_free()
130 static inline void reqsk_put(struct request_sock *req)  in reqsk_put()  argument
132 	if (refcount_dec_and_test(&req->rsk_refcnt))  in reqsk_put()
133 		reqsk_free(req);  in reqsk_put()
190 void reqsk_fastopen_remove(struct sock *sk, struct request_sock *req,
201 	struct request_sock *req;  in reqsk_queue_remove()  local
204 	req = queue->rskq_accept_head;  in reqsk_queue_remove()
205 	if (req) {  in reqsk_queue_remove()
207 		WRITE_ONCE(queue->rskq_accept_head, req->dl_next);  in reqsk_queue_remove()
212 	return req;  in reqsk_queue_remove()
216 				       const struct request_sock *req)  in reqsk_queue_removed()  argument
218 	if (req->num_timeout == 0)  in reqsk_queue_removed()