40 #define for_each_protocol_rcu(head, handler)		\  argument
41 	for (handler = rcu_dereference(head);		\
42 	     handler != NULL;				\
43 	     handler = rcu_dereference(handler->next))	\
48 	struct xfrm4_protocol *handler;  in xfrm4_rcv_cb()  local
54 	for_each_protocol_rcu(*head, handler)  in xfrm4_rcv_cb()
55 		if ((ret = handler->cb_handler(skb, err)) <= 0)  in xfrm4_rcv_cb()
65 	struct xfrm4_protocol *handler;  in xfrm4_rcv_encap()  local
83 	for_each_protocol_rcu(*head, handler)  in xfrm4_rcv_encap()
84 		if ((ret = handler->input_handler(skb, nexthdr, spi, encap_type)) != -EINVAL)  in xfrm4_rcv_encap()
99 	struct xfrm4_protocol *handler;  in xfrm4_esp_rcv()  local
103 	for_each_protocol_rcu(esp4_handlers, handler)  in xfrm4_esp_rcv()
104 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_esp_rcv()
115 	struct xfrm4_protocol *handler;  in xfrm4_esp_err()  local
117 	for_each_protocol_rcu(esp4_handlers, handler)  in xfrm4_esp_err()
118 		if (!handler->err_handler(skb, info))  in xfrm4_esp_err()
127 	struct xfrm4_protocol *handler;  in xfrm4_ah_rcv()  local
131 	for_each_protocol_rcu(ah4_handlers, handler)  in xfrm4_ah_rcv()
132 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_ah_rcv()
143 	struct xfrm4_protocol *handler;  in xfrm4_ah_err()  local
145 	for_each_protocol_rcu(ah4_handlers, handler)  in xfrm4_ah_err()
146 		if (!handler->err_handler(skb, info))  in xfrm4_ah_err()
155 	struct xfrm4_protocol *handler;  in xfrm4_ipcomp_rcv()  local
159 	for_each_protocol_rcu(ipcomp4_handlers, handler)  in xfrm4_ipcomp_rcv()
160 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_ipcomp_rcv()
171 	struct xfrm4_protocol *handler;  in xfrm4_ipcomp_err()  local
173 	for_each_protocol_rcu(ipcomp4_handlers, handler)  in xfrm4_ipcomp_err()
174 		if (!handler->err_handler(skb, info))  in xfrm4_ipcomp_err()
181 	.handler	=	xfrm4_esp_rcv,
187 	.handler	=	xfrm4_ah_rcv,
193 	.handler	=	xfrm4_ipcomp_rcv,
217 int xfrm4_protocol_register(struct xfrm4_protocol *handler,  in xfrm4_protocol_register()  argument
224 	int priority = handler->priority;  in xfrm4_protocol_register()
245 	handler->next = *pprev;  in xfrm4_protocol_register()
246 	rcu_assign_pointer(*pprev, handler);  in xfrm4_protocol_register()
264 int xfrm4_protocol_deregister(struct xfrm4_protocol *handler,  in xfrm4_protocol_deregister()  argument
280 		if (t == handler) {  in xfrm4_protocol_deregister()
281 			*pprev = handler->next;  in xfrm4_protocol_deregister()