xfrm4_protocol   1360 include/net/xfrm.h 	struct xfrm4_protocol __rcu *next;
xfrm4_protocol   1533 include/net/xfrm.h int xfrm4_protocol_register(struct xfrm4_protocol *handler, unsigned char protocol);
xfrm4_protocol   1534 include/net/xfrm.h int xfrm4_protocol_deregister(struct xfrm4_protocol *handler, unsigned char protocol);