Add dnctl rc.d service

As PF now also supports dummynet but can not configure it on its own,
the service which configures pipes, queues and schedulers is needed.

Reviewed by:	kp
Differential Revision:	https://reviews.freebsd.org/D37451

libexec/rc/rc.conf

@@ -244,6 +244,9 @@ pflog_enable="NO"		# Set to YES to enable packet filter logging
 pflog_logfile="/var/log/pflog"	# where pflogd should store the logfile
 pflog_program="/sbin/pflogd"	# where the pflogd program lives
 pflog_flags=""			# additional flags for pflogd
+dnctl_enable="NO"
+dnctl_program="/sbin/dnctl"
+dnctl_rules="/etc/dnctl.conf"
 ftpproxy_enable="NO"		# Set to YES to enable ftp-proxy(8) for pf
 ftpproxy_flags=""		# additional flags for ftp-proxy(8)
 pfsync_enable="NO"		# Expose pf state to other hosts for syncing

libexec/rc/rc.d/Makefile

@@ -216,7 +216,8 @@ CONFS+=	ipfilter \
 .endif
 
 .if ${MK_IPFW} != "no"
-CONFS+=		ipfw
+CONFS+=		ipfw \
+		dnctl
 .if ${MK_NETGRAPH} != "no"
 CONFS+=		ipfw_netflow
 .endif

libexec/rc/rc.d/dnctl

@@ -0,0 +1,27 @@
+#!/bin/sh
+#
+# $FreeBSD$
+#
+
+# PROVIDE: dnctl
+# BEFORE: pf ipfw
+# KEYWORD: nojailvnet
+
+. /etc/rc.subr
+
+name="dnctl"
+desc="Dummynet packet queuing and scheduling"
+rcvar="${name}_enable"
+load_rc_config $name
+start_cmd="${name}_start"
+required_files="$dnctl_rules"
+required_modules="dummynet"
+
+dnctl_start()
+{
+	startmsg -n "Enabling ${name}"
+	$dnctl_program "$dnctl_rules"
+	startmsg '.'
+}
+
+run_rc_command $*