net/ipv4/xfrm4_protocol.c

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