223 	struct xfrm4_protocol __rcu **pprev;  in xfrm4_protocol_register()  local
238 	for (pprev = proto_handlers(protocol);  in xfrm4_protocol_register()
239 	     (t = rcu_dereference_protected(*pprev,  in xfrm4_protocol_register()
241 	     pprev = &t->next) {  in xfrm4_protocol_register()
248 	handler->next = *pprev;  in xfrm4_protocol_register()
249 	rcu_assign_pointer(*pprev, handler);  in xfrm4_protocol_register()
270 	struct xfrm4_protocol __rcu **pprev;  in xfrm4_protocol_deregister()  local
279 	for (pprev = proto_handlers(protocol);  in xfrm4_protocol_deregister()
280 	     (t = rcu_dereference_protected(*pprev,  in xfrm4_protocol_deregister()
282 	     pprev = &t->next) {  in xfrm4_protocol_deregister()
284 			*pprev = handler->next;  in xfrm4_protocol_deregister()