Remove unused code in dispatch.c

Some routines in dispatch.c are obsolete and unused; clean them up
before porting to netmgr.

lib/dns/dispatch.c

@@ -208,10 +208,8 @@ struct dns_dispatch {
 	unsigned int refcount;		  /*%< number of users */
 	dns_dispatchevent_t *failsafe_ev; /*%< failsafe cancel event */
 	unsigned int shutting_down : 1, shutdown_out : 1, connected : 1,
-		tcpmsg_valid : 1, recv_pending : 1; /*%< is a
+		tcpmsg_valid : 1, recv_pending : 1; /*%< is a recv() pending? *
-						     * recv()
+						     */
-						     * pending?
-						     * */
 	isc_result_t shutdown_why;
 	ISC_LIST(dispsocket_t) activesockets;
 	ISC_LIST(dispsocket_t) inactivesockets;
@@ -2385,10 +2383,8 @@ dns_dispatch_getudp(dns_dispatchmgr_t *mgr, isc_socketmgr_t *sockmgr,
 
 	if ((attributes & DNS_DISPATCHATTR_EXCLUSIVE) != 0) {
 		REQUIRE(isc_sockaddr_getport(localaddr) == 0);
-		goto createudp;
 	}
 
-createudp:
 	/*
 	 * Nope, create one.
 	 */
@@ -3178,26 +3174,6 @@ dns_dispatch_getlocaladdress(dns_dispatch_t *disp, isc_sockaddr_t *addrp) {
 	return (ISC_R_NOTIMPLEMENTED);
 }
 
-void
-dns_dispatch_cancel(dns_dispatch_t *disp) {
-	REQUIRE(VALID_DISPATCH(disp));
-
-	LOCK(&disp->lock);
-
-	if (disp->shutting_down == 1) {
-		UNLOCK(&disp->lock);
-		return;
-	}
-
-	disp->shutdown_why = ISC_R_CANCELED;
-	disp->shutting_down = 1;
-	do_cancel(disp);
-
-	UNLOCK(&disp->lock);
-
-	return;
-}
-
 unsigned int
 dns_dispatch_getattributes(dns_dispatch_t *disp) {
 	REQUIRE(VALID_DISPATCH(disp));
@@ -3248,43 +3224,6 @@ dns_dispatch_changeattributes(dns_dispatch_t *disp, unsigned int attributes,
 	UNLOCK(&disp->lock);
 }
 
-void
-dns_dispatch_importrecv(dns_dispatch_t *disp, isc_event_t *event) {
-	void *buf;
-	isc_socketevent_t *sevent, *newsevent;
-
-	REQUIRE(VALID_DISPATCH(disp));
-	REQUIRE(event != NULL);
-
-	if ((disp->attributes & DNS_DISPATCHATTR_NOLISTEN) == 0) {
-		return;
-	}
-
-	sevent = (isc_socketevent_t *)event;
-	INSIST(sevent->n <= disp->mgr->buffersize);
-
-	newsevent = (isc_socketevent_t *)isc_event_allocate(
-		disp->mgr->mctx, NULL, DNS_EVENT_IMPORTRECVDONE, udp_shrecv,
-		disp, sizeof(isc_socketevent_t));
-
-	buf = allocate_udp_buffer(disp);
-	if (buf == NULL) {
-		isc_event_free(ISC_EVENT_PTR(&newsevent));
-		return;
-	}
-	memmove(buf, sevent->region.base, sevent->n);
-	newsevent->region.base = buf;
-	newsevent->region.length = disp->mgr->buffersize;
-	newsevent->n = sevent->n;
-	newsevent->result = sevent->result;
-	newsevent->address = sevent->address;
-	newsevent->timestamp = sevent->timestamp;
-	newsevent->pktinfo = sevent->pktinfo;
-	newsevent->attributes = sevent->attributes;
-
-	isc_task_send(disp->task[0], ISC_EVENT_PTR(&newsevent));
-}
-
 dns_dispatch_t *
 dns_dispatchset_get(dns_dispatchset_t *dset) {
 	dns_dispatch_t *disp;
@@ -3397,30 +3336,3 @@ dns_dispatchset_destroy(dns_dispatchset_t **dsetp) {
 	isc_mutex_destroy(&dset->lock);
 	isc_mem_putanddetach(&dset->mctx, dset, sizeof(dns_dispatchset_t));
 }
-
-void
-dns_dispatch_setdscp(dns_dispatch_t *disp, isc_dscp_t dscp) {
-	REQUIRE(VALID_DISPATCH(disp));
-	disp->dscp = dscp;
-}
-
-isc_dscp_t
-dns_dispatch_getdscp(dns_dispatch_t *disp) {
-	REQUIRE(VALID_DISPATCH(disp));
-	return (disp->dscp);
-}
-
-#if 0
-void
-dns_dispatchmgr_dump(dns_dispatchmgr_t *mgr) {
-	dns_dispatch_t *disp;
-	char foo[1024];
-
-	disp = ISC_LIST_HEAD(mgr->list);
-	while (disp != NULL) {
-		isc_sockaddr_format(&disp->local, foo, sizeof(foo));
-		printf("\tdispatch %p, addr %s\n", disp, foo);
-		disp = ISC_LIST_NEXT(disp, link);
-	}
-}
-#endif /* if 0 */

lib/dns/include/dns/dispatch.h

@@ -122,11 +122,6 @@ struct dns_dispatchset {
  *	The dispatcher can be used to issue queries to other servers, and
  *	accept replies from them.
  *
- * _RANDOMPORT
- *	Previously used to indicate that the port of a dispatch UDP must be
- *	chosen randomly.  This behavior now always applies and the attribute
- *	is obsoleted.
- *
  * _EXCLUSIVE
  *	A separate socket will be used on-demand for each transaction.
  */
@@ -429,15 +424,6 @@ dns_dispatch_getlocaladdress(dns_dispatch_t *disp, isc_sockaddr_t *addrp);
  *\li	ISC_R_NOTIMPLEMENTED
  */
 
-void
-dns_dispatch_cancel(dns_dispatch_t *disp);
-/*%<
- * cancel outstanding clients
- *
- * Requires:
- *\li	disp is valid.
- */
-
 unsigned int
 dns_dispatch_getattributes(dns_dispatch_t *disp);
 /*%<
@@ -473,21 +459,6 @@ dns_dispatch_changeattributes(dns_dispatch_t *disp, unsigned int attributes,
  *	attribute on a TCP socket isn't reasonable.
  */
 
-void
-dns_dispatch_importrecv(dns_dispatch_t *disp, isc_event_t *event);
-/*%<
- * Inform the dispatcher of a socket receive.  This is used for sockets
- * shared between dispatchers and clients.  If the dispatcher fails to copy
- * or send the event, nothing happens.
- *
- * If the attribute DNS_DISPATCHATTR_NOLISTEN is not set, then
- * the dispatch is already handling a recv; return immediately.
- *
- * Requires:
- *\li 	disp is valid, and the attribute DNS_DISPATCHATTR_NOLISTEN is set.
- * 	event != NULL
- */
-
 dns_dispatch_t *
 dns_dispatchset_get(dns_dispatchset_t *dset);
 /*%<
@@ -528,18 +499,6 @@ dns_dispatchset_destroy(dns_dispatchset_t **dsetp);
  *\li 	dset is valid
  */
 
-void
-dns_dispatch_setdscp(dns_dispatch_t *disp, isc_dscp_t dscp);
-isc_dscp_t
-dns_dispatch_getdscp(dns_dispatch_t *disp);
-/*%<
- * Set/get the DSCP value to be used when sending responses to clients,
- * as defined in the "listen-on" or "listen-on-v6" statements.
- *
- * Requires:
- *\li	disp is valid.
- */
-
 isc_result_t
 dns_dispatch_getnext(dns_dispentry_t *resp, dns_dispatchevent_t **sockevent);
 /*%<

lib/dns/include/dns/events.h

@@ -54,7 +54,7 @@
 #define DNS_EVENT_DISPATCHCONTROL    (ISC_EVENTCLASS_DNS + 32)
 #define DNS_EVENT_REQUESTCONTROL     (ISC_EVENTCLASS_DNS + 33)
 #define DNS_EVENT_DUMPQUANTUM	     (ISC_EVENTCLASS_DNS + 34)
-#define DNS_EVENT_IMPORTRECVDONE     (ISC_EVENTCLASS_DNS + 35)
+/* #define DNS_EVENT_IMPORTRECVDONE     (ISC_EVENTCLASS_DNS + 35) */
 #define DNS_EVENT_FREESTORAGE	     (ISC_EVENTCLASS_DNS + 36)
 #define DNS_EVENT_VIEWACACHESHUTDOWN (ISC_EVENTCLASS_DNS + 37)
 #define DNS_EVENT_ACACHECONTROL	     (ISC_EVENTCLASS_DNS + 38)