Merge pull request #9347 from commodo/mstpd2

mstpd: new package (multiple spanning tree daemon)

net/mstpd/Config.in

@@ -0,0 +1,12 @@
+menu "Configuration"
+	depends on PACKAGE_mstpd
+
+config MSTPD_RTNL_RCV_BUFSIZE
+	int "Netlink receive buffer size"
+	default 262144
+
+config MSTPD_RTNL_SND_BUFSIZE
+	int "Netlink send buffer size"
+	default 262144
+
+endmenu

net/mstpd/Makefile

@@ -0,0 +1,58 @@
+#
+# Copyright (C) 2019 Alexandru Ardelean <ardeleanalex@gmail.com>
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=mstpd
+PKG_VERSION:=0.0.8
+PKG_RELEASE:=1
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=https://codeload.github.com/mstpd/mstpd/tar.gz/$(PKG_VERSION)?
+PKG_HASH:=dd6492039368efff0bd13b3f9c8bb32d859ebfe258a70ef23b2163c4b6c35f0c
+
+PKG_MAINTAINER:=Alexandru Ardelean <ardeleanalex@gmail.com>
+PKG_LICENSE:=GPL-2.0-or-later
+PKG_LICENSE_FILES:=LICENSE
+
+PKG_FIXUP:=autoreconf
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/mstpd
+  SECTION:=net
+  CATEGORY:=Network
+  TITLE:=Multiple Spanning Tree Protocol daemon
+  URL:=https://github.com/mstpd/mstpd
+endef
+
+define Package/mstpd/description
+  Multiple Spanning Tree Protocol daemon.
+  Implements MSTP which is not implemented yet in the Linux kernel.
+endef
+
+define Package/mstpd/config
+  source "$(SOURCE)/Config.in"
+endef
+
+TARGET_CFLAGS += \
+	-DRTNL_RCV_BUFSIZE=$(CONFIG_MSTPD_RTNL_RCV_BUFSIZE) \
+	-DRTNL_SND_BUFSIZE=$(CONFIG_MSTPD_RTNL_SND_BUFSIZE)
+
+MAKE_VARS+=MODE=prod
+
+define Package/mstpd/install
+	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/mstpd $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/mstpctl $(1)/usr/sbin
+	$(INSTALL_DIR) $(1)/etc/init.d/
+	$(INSTALL_BIN) ./files/etc/init.d/mstpd.init $(1)/etc/init.d/mstpd
+	$(INSTALL_DIR) $(1)/sbin
+	$(INSTALL_BIN) ./files/sbin/bridge-stp $(1)/sbin
+endef
+
+$(eval $(call BuildPackage,mstpd))

net/mstpd/files/etc/init.d/mstpd.init

@@ -0,0 +1,124 @@
+#!/bin/sh /etc/rc.common
+
+# shellcheck disable=SC2034	# foo appears unused. Verify it or export it.
+
+START=25
+STOP=99
+
+MSTPCTL="/usr/sbin/mstpctl"
+MSTPD="/usr/sbin/mstpd"
+
+USE_PROCD=1
+
+mstpd_get_bridges() {
+	"$MSTPCTL" showbridge | grep -v "^ " | cut -d " " -f 1 2>/dev/null
+}
+
+# mstpd log levels 
+#   LOG_LEVEL_NONE  0
+#   LOG_LEVEL_ERROR 1
+#   LOG_LEVEL_INFO  2
+#   LOG_LEVEL_DEBUG 3
+#   LOG_LEVEL_STATE_MACHINE_TRANSITION 4
+#   LOG_LEVEL_MAX   100
+
+config_bridge_port_mstpd() {
+	local config="$1"
+	local index=$2 # FIXME: maybe remove index later
+	local name=$3
+
+	[ -n "$index" -a -n "$name" ] || return 0
+
+	config_get br_index "$config" br_index
+	[ -n "$br_index" ] || return 0
+	[ "$index" = "$br_index" ] || return 0
+
+	config_get port_name "$config" name
+	[ -n "$port_name" ] || return 0
+
+	for opt in bpduguard; do
+		config_get $opt "$config" $opt
+		eval optval=\$$opt
+		[ -z "$optval" ] || "$MSTPCTL" "set$opt" "$name" "$port_name" "$optval"
+	done
+}
+
+config_bridge_mstpd() {
+	local config="$1"
+	local optval=
+	local name=
+	local enable=
+	local mstid=0 #  for the moment, using only MSTID
+
+	config_get index "$config" index
+	[ -n "$index" ] || return 1
+
+	# Get bridge name
+	config_get name "$config" name
+	[ -n "$name" ] || return 0
+
+	config_get enable "$config" enable
+	if [ "$enable" != "1" ] ; then
+		return 0
+	fi
+
+	list_contains MSTPD_PREINSTALLED_BRIDGES "$name" || \
+		"$MSTPCTL" addbridge "$name"
+	# All options here have 'set$opt' equivalent calls in mstpd,
+	#  hence this trick with the loop
+	for opt in maxage fdelay maxhops hello ageing forcevers txholdcount; do
+		config_get $opt "$config" "$opt"
+		eval optval=\$$opt
+		[ -z "$optval" ] || "$MSTPCTL" set$opt "$name" "$optval"
+	done
+	config_get treeprio "$config" treeprio
+	[ -z "$treeprio" ] || $MSTPCTL settreeprio "$name" "$mstid" "$treeprio"
+	config_foreach config_bridge_port_mstpd bridge_port "$index" "$name"
+	CONFIGURED_BRIDGES="$CONFIGURED_BRIDGES $name"
+	export CONFIGURED_BRIDGES
+}
+
+start_service() {
+	procd_open_instance
+	procd_set_param command $MSTPD
+	procd_append_param command -v 2
+	procd_append_param command -d # don't daemonize, procd will handle that for us
+	procd_append_param command -s # print to syslog
+
+	# set auto respawn behavior
+	procd_set_param respawn
+
+	# reload config on respawn
+	procd_open_trigger
+	procd_add_raw_trigger "instance.start" 2000 "/etc/init.d/mstpd" "reload"
+	procd_close_trigger
+
+	procd_close_instance
+}
+
+service_running() {
+	pgrep mstpd >/dev/null 2>&1
+}
+
+reload_service() {
+	if ! running ; then
+		start
+		return
+	fi
+
+	unset CONFIGURED_BRIDGES
+	MSTPD_PREINSTALLED_BRIDGES="$(mstpd_get_bridges)"
+	export MSTPD_PREINSTALLED_BRIDGES
+
+	config_load 'mstpd'
+	config_foreach config_bridge_mstpd bridge
+
+	for bridge in $(mstpd_get_bridges) ; do
+		list_contains CONFIGURED_BRIDGES "$bridge" || \
+			$MSTPCTL delbridge "$bridge"
+	done
+	# return 0 (success) here, otherwise, and endless restart loop will occur from procd
+	# because the last return code may be mstpctl failing
+	return 0
+}
+

net/mstpd/files/sbin/bridge-stp

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+#!/bin/sh
+
+# Dummy file ; don't do anything ;
+# Returning success here, tells the kernel to allow
+# a userspace module to handle STP states
+#
+# Meanwhile, procd will start mstpd, and all will be well
+
+exit 0