44 #define for_each_protocol_rcu(head, handler)		\  argument
45 	for (handler = rcu_dereference(head);		\
46 	     handler != NULL;				\
47 	     handler = rcu_dereference(handler->next))	\
52 	struct xfrm4_protocol *handler;  in xfrm4_rcv_cb()  local
58 	for_each_protocol_rcu(*head, handler)  in xfrm4_rcv_cb()
59 		if ((ret = handler->cb_handler(skb, err)) <= 0)  in xfrm4_rcv_cb()
70 	struct xfrm4_protocol *handler;  in xfrm4_rcv_encap()  local
80 	for_each_protocol_rcu(*head, handler)  in xfrm4_rcv_encap()
81 		if ((ret = handler->input_handler(skb, nexthdr, spi, encap_type)) != -EINVAL)  in xfrm4_rcv_encap()
95 	struct xfrm4_protocol *handler;  in xfrm4_esp_rcv()  local
99 	for_each_protocol_rcu(esp4_handlers, handler)  in xfrm4_esp_rcv()
100 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_esp_rcv()
111 	struct xfrm4_protocol *handler;  in xfrm4_esp_err()  local
113 	for_each_protocol_rcu(esp4_handlers, handler)  in xfrm4_esp_err()
114 		if (!handler->err_handler(skb, info))  in xfrm4_esp_err()
121 	struct xfrm4_protocol *handler;  in xfrm4_ah_rcv()  local
125 	for_each_protocol_rcu(ah4_handlers, handler)  in xfrm4_ah_rcv()
126 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_ah_rcv()
137 	struct xfrm4_protocol *handler;  in xfrm4_ah_err()  local
139 	for_each_protocol_rcu(ah4_handlers, handler)  in xfrm4_ah_err()
140 		if (!handler->err_handler(skb, info))  in xfrm4_ah_err()
147 	struct xfrm4_protocol *handler;  in xfrm4_ipcomp_rcv()  local
151 	for_each_protocol_rcu(ipcomp4_handlers, handler)  in xfrm4_ipcomp_rcv()
152 		if ((ret = handler->handler(skb)) != -EINVAL)  in xfrm4_ipcomp_rcv()
163 	struct xfrm4_protocol *handler;  in xfrm4_ipcomp_err()  local
165 	for_each_protocol_rcu(ipcomp4_handlers, handler)  in xfrm4_ipcomp_err()
166 		if (!handler->err_handler(skb, info))  in xfrm4_ipcomp_err()
171 	.handler	=	xfrm4_esp_rcv,
178 	.handler	=	xfrm4_ah_rcv,
185 	.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()