2 /* xfrm4_protocol.c - Generic xfrm protocol multiplexer.
18 #include <net/protocol.h>
26 static inline struct xfrm4_protocol __rcu **proto_handlers(u8 protocol)  in proto_handlers()  argument
28 	switch (protocol) {  in proto_handlers()
45 static int xfrm4_rcv_cb(struct sk_buff *skb, u8 protocol, int err)  in xfrm4_rcv_cb()  argument
49 	struct xfrm4_protocol __rcu **head = proto_handlers(protocol);  in xfrm4_rcv_cb()
203 static inline const struct net_protocol *netproto(unsigned char protocol)  in netproto()  argument
205 	switch (protocol) {  in netproto()
218 			    unsigned char protocol)  in xfrm4_protocol_register()  argument
226 	if (!proto_handlers(protocol) || !netproto(protocol))  in xfrm4_protocol_register()
231 	if (!rcu_dereference_protected(*proto_handlers(protocol),  in xfrm4_protocol_register()
235 	for (pprev = proto_handlers(protocol);  in xfrm4_protocol_register()
254 		if (inet_add_protocol(netproto(protocol), protocol)) {  in xfrm4_protocol_register()
255 			pr_err("%s: can't add protocol\n", __func__);  in xfrm4_protocol_register()
265 			      unsigned char protocol)  in xfrm4_protocol_deregister()  argument
271 	if (!proto_handlers(protocol) || !netproto(protocol))  in xfrm4_protocol_deregister()
276 	for (pprev = proto_handlers(protocol);  in xfrm4_protocol_deregister()
287 	if (!rcu_dereference_protected(*proto_handlers(protocol),  in xfrm4_protocol_deregister()
289 		if (inet_del_protocol(netproto(protocol), protocol) < 0) {  in xfrm4_protocol_deregister()
290 			pr_err("%s: can't remove protocol\n", __func__);  in xfrm4_protocol_deregister()