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mcastmngr: Add mcastmngr
The mcastmngr read the uci file and configures the corresponding
multicast daemon accordingly. It is for now doing this for broadcom's
mcpd utility. Here are a few examples of what UCI config gets converted
to what /var/mcpd.conf
Snooping:
config snooping 'msnoop_1'
option enable '1'
option proto 'igmp'
option version '2'
option robustness '2'
option aggregation '0'
option interface 'br-wan100'
root@iopsys:~# cat /var/mcpd.conf
igmp-default-version 2
igmp-robustness-value 2
igmp-max-groups 20
igmp-max-sources 10
igmp-max-members 20
igmp-snooping-enable 1
igmp-proxy-enable 0
igmp-query-interval 125
igmp-query-response-interval 100
igmp-last-member-query-interval 10
igmp-mcast-interfaces eth5.100
igmp-snooping-interfaces br-wan100
Proxy:
config proxy 'mproxy_1'
option enable '1'
option proto 'igmp'
option version '2'
option robustness '2'
option aggregation '0'
option last_member_query_interval '10'
option query_interval '120'
option query_response_interval '100'
list downstream_interface 'br-lan'
list upstream_interface 'eth5.1'
root@iopsys:~# cat /var/mcpd.conf
igmp-default-version 2
igmp-robustness-value 2
igmp-max-groups 20
igmp-max-sources 10
igmp-max-members 20
igmp-snooping-enable 2
igmp-proxy-enable 1
igmp-fast-leave 1
igmp-query-interval 120
igmp-query-response-interval 100
igmp-last-member-query-interval 10
igmp-proxy-interfaces eth5.1
igmp-mcast-interfaces eth5.1
igmp-snooping-interfaces br-lan
This commit is contained in:
Rahul
parent
123dcd9d87
commit
cd4733efa9
4 changed files with 359 additions and 0 deletions
38
mcastmngr/Makefile
Normal file
38
mcastmngr/Makefile
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@ -0,0 +1,38 @@
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#
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# Copyright (C) 2013-2020 iopsys
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#
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=mcastmngr
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PKG_VERSION:=1.0.0
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PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
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PKG_LICENSE:=GPL-2.0-only
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PKG_LICENSE_FILES:=LICENSE
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include $(INCLUDE_DIR)/package.mk
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define Package/mcastmngr
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CATEGORY:=Utilities
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TITLE:=multicast packets manager daemon
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endef
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define Package/mcastmngr/description
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Configures IGMP and MLD snooping and proxy
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endef
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#define Build/Prepare
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# $(CP) -rf ./mcastmngr/* $(PKG_BUILD_DIR)/
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#endef
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define Build/Compile
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endef
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define Package/mcastmngr/install
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$(CP) ./files/* $(1)/
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endef
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$(eval $(call BuildPackage,mcastmngr))
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35
mcastmngr/files/etc/init.d/mcast
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35
mcastmngr/files/etc/init.d/mcast
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@ -0,0 +1,35 @@
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#!/bin/sh /etc/rc.common
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START=98
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STOP=10
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USE_PROCD=1
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NAME=mcast
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include /lib/network
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include /lib/mcast
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service_triggers() {
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procd_add_reload_trigger network $NAME
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}
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start_service() {
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if [ -f "/etc/config/mcast" ]; then
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configure_mcast_igmp
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fi
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procd_open_instance
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procd_set_param command "$PROG_EXE"
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procd_set_param respawn
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procd_close_instance
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}
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stop_service() {
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service_stop $PROG_EXE
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}
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reload_service() {
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stop
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start
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}
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48
mcastmngr/files/etc/uci-defaults/61-mcast_config_generate
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48
mcastmngr/files/etc/uci-defaults/61-mcast_config_generate
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#!/bin/sh
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. /lib/functions.sh
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generate_igmp_global_params(){
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uci add mcast igmp
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uci rename mcast.@igmp[-1]="igmp"
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uci set mcast.@igmp[-1].max_groups="20"
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uci set mcast.@igmp[-1].max_msf="10"
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uci set mcast.@igmp[-1].max_membership="20"
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uci set mcast.@igmp[-1].max_qrv="2"
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uci set mcast.@igmp[-1].force_version="0"
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uci commit mcast
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}
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generate_mcast_config(){
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section="$1"
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config_get type "$section" "type"
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if [ "$type" != "bridge" ]; then
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return
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fi
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uci add mcast snooping
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uci rename mcast.@snooping[-1]="msnoop_1"
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uci set mcast.@snooping[-1].enable="0"
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uci set mcast.@snooping[-1].proto="igmp"
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uci set mcast.@snooping[-1].version="2"
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uci set mcast.@snooping[-1].robustness="2"
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uci set mcast.@snooping[-1].aggregation="0"
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uci set mcast.@snooping[-1].interface="br-$section"
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uci commit mcast
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}
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if [ -s "/etc/config/mcast" ]; then
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if uci -q get mcast.@snooping[0] >/dev/null; then
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# return if there is any valid content
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exit
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else
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rm -f /etc/config/mcast
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fi
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fi
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touch /etc/config/mcast
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generate_igmp_global_params
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config_load network
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config_foreach generate_mcast_config interface
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238
mcastmngr/files/lib/mcast/broadcom.sh
Executable file
238
mcastmngr/files/lib/mcast/broadcom.sh
Executable file
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#!/bin/sh
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. /lib/functions.sh
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. /usr/share/libubox/jshn.sh
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include /lib/network
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CONFFILE=/var/mcpd.conf
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PROG_EXE=/usr/sbin/mcpd
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# Parameters available in snooping configuration
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s_enable=0
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s_version=2
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s_robustness=2
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s_interface=""
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s_exceptions=""
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# Parameters available in proxy configuration
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p_enable=0
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p_version=2
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query_interval=125
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q_resp_interval=100
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last_mem_q_int=10
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max_groups=25
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max_msf=10
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max_members=25
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fast_leave=1
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p_robustness=2
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p_up_interfaces=""
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p_down_interfaces=""
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p_exceptions=""
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# Standard parameters need by BCM's multicast daemon
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l_2_l_mcast=0
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bcm_mcast_p=1
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allow_brdevice=0
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proxdevs=""
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ethwan="$(db -q get hw.board.ethernetWanPort)"
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read_snooping() {
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local config="$1"
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config_get s_enable "$config" enable 0
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if [ "$s_enable" == "0" ]; then
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return
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fi
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config_get s_version "$config" version 2
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config_get s_robustness "$config" robustness 2
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config_get s_interface "$config" interface
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config_get s_exceptions "$config" filter
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}
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read_proxy() {
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local config="$1"
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config_get p_enable "$config" enable 0
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if [ "$p_enable" == "0" ]; then
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return
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fi
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config_get p_version "$config" version 2
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config_get query_interval "$config" query_interval
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config_get q_resp_interval "$config" query_response_interval
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config_get last_mem_q_int "$config" last_member_query_interval
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config_get fast_leave "$config" fast_leave 1
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config_get p_robustness "$config" robustness 2
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config_get p_up_interfaces "$config" upstream_interface
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config_get p_down_interfaces "$config" downstream_interface
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config_get p_exceptions "$config" filter
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}
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config_igmps_common_params() {
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echo "igmp-default-version $1" >> $CONFFILE
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echo "igmp-robustness-value $2" >> $CONFFILE
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echo "igmp-max-groups $max_groups" >> $CONFFILE
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echo "igmp-max-sources $max_msf" >> $CONFFILE
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echo "igmp-max-members $max_members" >> $CONFFILE
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echo "igmp-snooping-enable $3" >> $CONFFILE
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}
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config_igmp_querier_params() {
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echo "igmp-query-interval $query_interval" >> $CONFFILE
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echo "igmp-query-response-interval $q_resp_interval" >> $CONFFILE
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echo "igmp-last-member-query-interval $last_mem_q_int" >> $CONFFILE
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}
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config_snooping_on_bridge() {
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echo "igmp-snooping-interfaces $1" >> $CONFFILE
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for snpif in $1; do
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case "$snpif" in
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br-*)
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# set snooping mode on the bridge
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bcmmcastctl mode -i $snpif -p $bcm_mcast_p -m $2
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# set L2L snooping mode on the bridge
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bcmmcastctl l2l -i $snpif -p $bcm_mcast_p -e $l_2_l_mcast # set L2L snooping mode on the bridge
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;;
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esac
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done
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}
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handle_bridged_proxy_interface() {
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bridged=1
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if [ $p_enable -eq 1 -a $allow_brdevice -eq 1 ]
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then
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proxdevs="$proxdevs $1"
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echo "upstream-interface $1" >>$CONFFILE
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else
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json_load "$(devstatus $1)"
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itr=1
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json_select bridge-members
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while json_get_var dev $itr; do
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case "$dev" in
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*.*)
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port="$(echo "$dev" | cut -d'.' -f 1)"
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if [ $port == $ethwan ]; then
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ifconfig $dev | grep RUNNING >/dev/null && proxdevs="$proxdevs $dev" && break
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fi
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;;
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esac
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itr=$(($itr + 1))
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done
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json_select ..
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fi
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}
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config_igmp_proxy_interface() {
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local itr
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for proxif in $1; do
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case "$proxif" in
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br-*)
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handle_bridged_proxy_interface $proxif
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;;
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*)
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proxdevs="$proxdevs $proxif"
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;;
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esac
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done
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if [ $p_enable -eq 1 ]; then
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echo "igmp-proxy-interfaces $proxdevs" >> $CONFFILE
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fi
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[ -n "$proxdevs" ] && echo "igmp-mcast-interfaces $proxdevs" >> $CONFFILE
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}
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configure_mcpd_snooping() {
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# Configure snooping related params
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config_igmps_common_params $s_version $s_robustness $s_enable
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echo "igmp-proxy-enable 0" >> $CONFFILE
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# BCM's mcpd always acts as queries, so configure some default values to prevent flooding
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# of queries towards the clients or early leaves even in pure snooping with what will be
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# default values for these params
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config_igmp_querier_params
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config_igmp_proxy_interface $s_interface
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# set snooping mode on the bridge
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config_snooping_on_bridge $s_interface $s_enable
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[ -n "$s_exceptions" ] && echo "igmp-mcast-snoop-exceptions $s_exceptions" >> $CONFFILE
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}
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configure_mcpd_proxy() {
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local s_mode=2
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# Configure snooping related params
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config_igmps_common_params $p_version $p_robustness $s_mode
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echo "igmp-proxy-enable $p_enable" >> $CONFFILE
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echo "igmp-fast-leave $fast_leave" >> $CONFFILE
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config_igmp_querier_params
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config_igmp_proxy_interface $p_up_interfaces
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config_snooping_on_bridge $p_down_interfaces $s_mode
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[ -n "$p_exceptions" ] && echo "igmp-mcast-snoop-exceptions $p_exceptions" >> $CONFFILE
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}
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configure_mcpd() {
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for br in $(brctl show | grep 'br-' | awk '{print$1}' | tr '\n' ' '); do
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bcmmcastctl mode -i $br -p $bcm_mcast_p -m 0 # disable snooping on all bridges
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bcmmcastctl l2l -i $br -p $bcm_mcast_p -e 0 # disable L2L snooping on all bridges
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done
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# BCM's mcpd does not allow configuration of proxy and L2 snooping simultaneously, hence
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# here, if proxy is to be configured then the configuration params of snooping are ignored.
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if [ "$p_enable" == "1" ]; then
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configure_mcpd_proxy
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elif [ "$s_enable" == "1" ]; then
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configure_mcpd_snooping
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fi
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}
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read_igmp_snooping_params() {
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config_load mcast
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config_foreach read_snooping snooping
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}
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read_igmp_proxy_params() {
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config_load mcast
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config_foreach read_proxy proxy
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}
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config_global_igmp_params() {
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local qrv
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local force_version
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config_load mcast
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config_get max_groups igmp max_groups 25
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config_get max_msf igmp max_msf 10
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config_get max_members igmp max_membership 25
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config_get qrv igmp qrv 2
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config_get force_version igmp force_version 0
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echo $max_members >/proc/sys/net/ipv4/igmp_max_memberships
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echo $max_msf > /proc/sys/net/ipv4/igmp_max_msf
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echo $qrv > /proc/sys/net/ipv4/igmp_qrv
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echo $force_version > /proc/sys/net/ipv4/conf/all/force_igmp_version
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}
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configure_mcast_igmp() {
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rm -f $CONFFILE
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touch $CONFFILE
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config_global_igmp_params
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read_igmp_snooping_params
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read_igmp_proxy_params
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configure_mcpd
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}
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