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
75 	for_each_protocol_rcu(*head, handler)  in xfrm4_rcv_encap()
76 		if ((ret = handler->input_handler(skb, nexthdr, spi, encap_type)) != -EINVAL)  in xfrm4_rcv_encap()
90 	struct xfrm4_protocol *handler;  in xfrm4_esp_rcv()  local
94 	for_each_protocol_rcu(esp4_handlers, handler)  in xfrm4_esp_rcv()
95 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_esp_rcv()
106 	struct xfrm4_protocol *handler;  in xfrm4_esp_err()  local
108 	for_each_protocol_rcu(esp4_handlers, handler)  in xfrm4_esp_err()
109 		if (!handler->err_handler(skb, info))  in xfrm4_esp_err()
118 	struct xfrm4_protocol *handler;  in xfrm4_ah_rcv()  local
122 	for_each_protocol_rcu(ah4_handlers, handler)  in xfrm4_ah_rcv()
123 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_ah_rcv()
134 	struct xfrm4_protocol *handler;  in xfrm4_ah_err()  local
136 	for_each_protocol_rcu(ah4_handlers, handler)  in xfrm4_ah_err()
137 		if (!handler->err_handler(skb, info))  in xfrm4_ah_err()
146 	struct xfrm4_protocol *handler;  in xfrm4_ipcomp_rcv()  local
150 	for_each_protocol_rcu(ipcomp4_handlers, handler)  in xfrm4_ipcomp_rcv()
151 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_ipcomp_rcv()
162 	struct xfrm4_protocol *handler;  in xfrm4_ipcomp_err()  local
164 	for_each_protocol_rcu(ipcomp4_handlers, handler)  in xfrm4_ipcomp_err()
165 		if (!handler->err_handler(skb, info))  in xfrm4_ipcomp_err()
172 	.handler	=	xfrm4_esp_rcv,
179 	.handler	=	xfrm4_ah_rcv,
186 	.handler	=	xfrm4_ipcomp_rcv,
211 int xfrm4_protocol_register(struct xfrm4_protocol *handler,  in xfrm4_protocol_register()  argument
218 	int priority = handler->priority;  in xfrm4_protocol_register()
239 	handler->next = *pprev;  in xfrm4_protocol_register()
240 	rcu_assign_pointer(*pprev, handler);  in xfrm4_protocol_register()
258 int xfrm4_protocol_deregister(struct xfrm4_protocol *handler,  in xfrm4_protocol_deregister()  argument
274 		if (t == handler) {  in xfrm4_protocol_deregister()
275 			*pprev = handler->next;  in xfrm4_protocol_deregister()