Index: sys/dev/iscsi/iscsi_ioctl.h
===================================================================
--- sys/dev/iscsi/iscsi_ioctl.h
+++ sys/dev/iscsi/iscsi_ioctl.h
@@ -71,7 +71,8 @@
 	char		isc_offload[ISCSI_OFFLOAD_LEN];
 	int		isc_enable;
 	int		isc_dscp;
-	int		isc_spare[3];
+	int		isc_pcp;
+	int		isc_spare[2];
 };
 
 /*
Index: usr.bin/iscsictl/iscsi.conf.5
===================================================================
--- usr.bin/iscsictl/iscsi.conf.5
+++ usr.bin/iscsictl/iscsi.conf.5
@@ -155,6 +155,13 @@
 codepoints.
 Default is no specified dscp codepoint, which means the default
 of the outgoing interface is used.
+.It Cm pcp
+The 802.1Q Priority CodePoint used for sending packets.
+The PCP can be set to a value in the range between
+.Qq Ar 0
+to
+.Qq Ar 7 .
+When omitted, the default for the outgoing interface is used.
 .El
 .Sh FILES
 .Bl -tag -width indent
Index: usr.bin/iscsictl/iscsictl.h
===================================================================
--- usr.bin/iscsictl/iscsictl.h
+++ usr.bin/iscsictl/iscsictl.h
@@ -79,6 +79,7 @@
 	int			t_enable;
 	int			t_protocol;
 	int			t_dscp;
+	int			t_pcp;
 	char			*t_offload;
 	char			*t_user;
 	char			*t_secret;
Index: usr.bin/iscsictl/iscsictl.c
===================================================================
--- usr.bin/iscsictl/iscsictl.c
+++ usr.bin/iscsictl/iscsictl.c
@@ -88,6 +88,7 @@
 		xo_err(1, "calloc");
 	targ->t_conf = conf;
 	targ->t_dscp = -1;
+	targ->t_pcp = -1;
 	TAILQ_INSERT_TAIL(&conf->conf_targets, targ, t_next);
 
 	return (targ);
@@ -360,6 +361,7 @@
 	else
 		conf->isc_data_digest = ISCSI_DIGEST_NONE;
 	conf->isc_dscp = targ->t_dscp;
+	conf->isc_pcp = targ->t_pcp;
 }
 
 static int
@@ -540,6 +542,9 @@
 			if (conf->isc_dscp != -1)
 				xo_emit("{L:/%-26s}{V:dscp/0x%02x}\n",
 				    "Target DSCP:", conf->isc_dscp);
+			if (conf->isc_pcp != -1)
+				xo_emit("{L:/%-26s}{V:pcp/0x%02x}\n",
+				    "Target PCP:", conf->isc_pcp);
 			xo_close_container("target");
 
 			xo_open_container("auth");
Index: usr.bin/iscsictl/parse.y
===================================================================
--- usr.bin/iscsictl/parse.y
+++ usr.bin/iscsictl/parse.y
@@ -133,6 +133,8 @@
 	ignored
 	|
 	dscp
+	|
+	pcp
 	;
 
 target_name:	TARGET_NAME EQUALS STR
@@ -306,6 +308,8 @@
 	{
 		uint64_t tmp;
 
+		if (target->t_dscp != -1)
+			xo_errx(1, "duplicated dscp at line %d", lineno);
 		if (strcmp($3, "0x") == 0) {
 			tmp = strtol($3 + 2, NULL, 16);
 		} else if (expand_number($3, &tmp) != 0) {
@@ -344,6 +348,27 @@
 	| DSCP EQUALS AF43	{ target->t_dscp = IPTOS_DSCP_AF43 >> 2 ; }
 	;
 
+pcp:	PCP EQUALS STR
+	{
+		uint64_t tmp;
+
+		if (target->t_pcp != -1)
+			xo_errx(1, "duplicated pcp at line %d", lineno);
+
+		if (expand_number($3, &tmp) != 0) {
+			yyerror("invalid numeric value");
+			free($3);
+			return(1);
+		}
+		if (!((tmp >=0) && (tmp <= 7))) {
+			yyerror("invalid pcp value");
+			return(1);
+		}
+
+		target->t_pcp = tmp;
+	}
+	;
+
 %%
 
 void
Index: usr.bin/iscsictl/token.l
===================================================================
--- usr.bin/iscsictl/token.l
+++ usr.bin/iscsictl/token.l
@@ -69,6 +69,7 @@
 offload			{ return OFFLOAD; }
 port			{ return IGNORED; }
 dscp			{ return DSCP; }
+pcp			{ return PCP; }
 MaxConnections		{ return IGNORED; }
 TargetAlias		{ return IGNORED; }
 TargetPortalGroupTag	{ return IGNORED; }
Index: usr.sbin/iscsid/iscsid.c
===================================================================
--- usr.sbin/iscsid/iscsid.c
+++ usr.sbin/iscsid/iscsid.c
@@ -296,6 +296,25 @@
 				    from_addr);
 		}
 	}
+	if (conn->conn_conf.isc_pcp != -1) {
+		int pcp = conn->conn_conf.isc_pcp;
+		if (to_ai->ai_family == AF_INET) {
+			if (setsockopt(conn->conn_socket,
+			    IPPROTO_IP, IP_VLAN_PCP,
+			    &pcp, sizeof(pcp)) == -1)
+				log_warn("setsockopt(IP_VLAN_PCP) "
+				    "failed for %s",
+				    from_addr);
+		} else
+		if (to_ai->ai_family == AF_INET6) {
+			if (setsockopt(conn->conn_socket,
+			    IPPROTO_IPV6, IPV6_VLAN_PCP,
+			    &pcp, sizeof(pcp)) == -1)
+				log_warn("setsockopt(IPV6_VLAN_PCP) "
+				    "failed for %s",
+				    from_addr);
+		}
+	}
 	if (from_ai != NULL) {
 		error = bind(conn->conn_socket, from_ai->ai_addr,
 		    from_ai->ai_addrlen);