From f1a03e38c50a7d5bc9185fe40d17d80197e1b575 Mon Sep 17 00:00:00 2001
From: mav <mav@FreeBSD.org>
Date: Mon, 5 Oct 2015 08:54:02 +0000
Subject: MFC r287534: Add two new portal group options "tag" and "foreign".

They are going to be useful in clustered setups.
---
 usr.sbin/ctld/ctld.c | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'usr.sbin/ctld/ctld.c')

diff --git a/usr.sbin/ctld/ctld.c b/usr.sbin/ctld/ctld.c
index 85f1133..90b74bf 100644
--- a/usr.sbin/ctld/ctld.c
+++ b/usr.sbin/ctld/ctld.c
@@ -59,7 +59,7 @@ static volatile bool sigterm_received = false;
 static volatile bool sigalrm_received = false;
 
 static int nchildren = 0;
-static uint16_t last_portal_group_tag = 0;
+static uint16_t last_portal_group_tag = 0xff;
 
 static void
 usage(void)
@@ -1212,6 +1212,7 @@ port_new(struct conf *conf, struct target *target, struct portal_group *pg)
 	port->p_target = target;
 	TAILQ_INSERT_TAIL(&pg->pg_ports, port, p_pgs);
 	port->p_portal_group = pg;
+	port->p_foreign = pg->pg_foreign;
 	return (port);
 }
 
@@ -1717,14 +1718,16 @@ conf_verify(struct conf *conf)
 		if (pg->pg_discovery_filter == PG_FILTER_UNKNOWN)
 			pg->pg_discovery_filter = PG_FILTER_NONE;
 
-		if (!TAILQ_EMPTY(&pg->pg_ports)) {
-			if (pg->pg_redirection != NULL) {
+		if (pg->pg_redirection != NULL) {
+			if (!TAILQ_EMPTY(&pg->pg_ports)) {
 				log_debugx("portal-group \"%s\" assigned "
 				    "to target, but configured "
 				    "for redirection",
 				    pg->pg_name);
 			}
 			pg->pg_unassigned = false;
+		} else if (!TAILQ_EMPTY(&pg->pg_ports)) {
+			pg->pg_unassigned = false;
 		} else {
 			if (strcmp(pg->pg_name, "default") != 0)
 				log_warnx("portal-group \"%s\" not assigned "
@@ -1818,6 +1821,8 @@ conf_apply(struct conf *oldconf, struct conf *newconf)
 	 * Go through the new portal groups, assigning tags or preserving old.
 	 */
 	TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
+		if (newpg->pg_tag != 0)
+			continue;
 		oldpg = portal_group_find(oldconf, newpg->pg_name);
 		if (oldpg != NULL)
 			newpg->pg_tag = oldpg->pg_tag;
@@ -1847,8 +1852,10 @@ conf_apply(struct conf *oldconf, struct conf *newconf)
 	 * and missing in the new one.
 	 */
 	TAILQ_FOREACH_SAFE(oldport, &oldconf->conf_ports, p_next, tmpport) {
+		if (oldport->p_foreign)
+			continue;
 		newport = port_find(newconf, oldport->p_name);
-		if (newport != NULL)
+		if (newport != NULL && !newport->p_foreign)
 			continue;
 		log_debugx("removing port \"%s\"", oldport->p_name);
 		error = kernel_port_remove(oldport);
@@ -1968,9 +1975,11 @@ conf_apply(struct conf *oldconf, struct conf *newconf)
 	 * Now add new ports or modify existing ones.
 	 */
 	TAILQ_FOREACH(newport, &newconf->conf_ports, p_next) {
+		if (newport->p_foreign)
+			continue;
 		oldport = port_find(oldconf, newport->p_name);
 
-		if (oldport == NULL) {
+		if (oldport == NULL || oldport->p_foreign) {
 			log_debugx("adding port \"%s\"", newport->p_name);
 			error = kernel_port_add(newport);
 		} else {
@@ -1994,6 +2003,8 @@ conf_apply(struct conf *oldconf, struct conf *newconf)
 	 * Go through the new portals, opening the sockets as neccessary.
 	 */
 	TAILQ_FOREACH(newpg, &newconf->conf_portal_groups, pg_next) {
+		if (newpg->pg_foreign)
+			continue;
 		if (newpg->pg_unassigned) {
 			log_debugx("not listening on portal-group \"%s\", "
 			    "not assigned to any target",
-- 
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