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mcastmngr: add snooping configuration support for linux targets
l2 snooping mode implements on the linux kernel multicast bridge level. If snooping mode is enabled, mcastmngr configure kernel multicast bridge with the appropriate uci mcast params.
This commit is contained in:
Anatoly Mirin
Rahul Thakur
parent
6f24ad440c
commit
b6477e8b84
1 changed files with 156 additions and 11 deletions
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@ -10,6 +10,8 @@ PROG_EXE=/usr/sbin/mcproxy
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PROG_PARAMS=
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PROG_PARAMS_SEPARATOR=:
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snooping_bridges=
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__device_is_bridge() {
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local device="$2"
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@ -114,10 +116,11 @@ config_mcproxy_interfaces() {
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config_sysfs_mcast_snooping() {
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local downstreams="$1"
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local snooping="$2"
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for downstream in $downstreams; do
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if device_is_bridge "$downstream"; then
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echo 1 > /sys/class/net/$downstream/bridge/multicast_snooping
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echo $snooping > /sys/class/net/$downstream/bridge/multicast_snooping
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fi
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done
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}
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@ -136,7 +139,53 @@ config_sysfs_mcast_fastleave() {
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done
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}
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config_sysfs_mcast_mode() {
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config_sysfs_mcast_version() {
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local protocol="$1"
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local interfaces="$2"
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local version="$3"
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for iface in $interfaces; do
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echo $version > /sys/class/net/$iface/bridge/multicast_"$protocol"_version
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done
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}
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config_sysfs_mcast_robustness() {
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local interfaces="$1"
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local robustness="$2"
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for iface in $interfaces; do
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echo $robustness > /sys/class/net/$iface/bridge/multicast_last_member_count
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done
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}
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config_sysfs_mcast_query_interval() {
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local interfaces="$1"
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local query_interval="$2"
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for iface in $interfaces; do
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echo $query_interval > /sys/class/net/$iface/bridge/multicast_query_interval
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done
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}
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config_sysfs_mcast_q_resp_interval() {
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local interfaces="$1"
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local q_resp_interval="$2"
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for iface in $interfaces; do
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echo $q_resp_interval > /sys/class/net/$iface/bridge/multicast_query_response_interval
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done
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}
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config_sysfs_mcast_last_mem_q_int() {
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local interfaces="$1"
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local last_mem_q_int="$2"
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for iface in $interfaces; do
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echo $last_mem_q_int > /sys/class/net/$iface/bridge/multicast_last_member_interval
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done
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}
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config_sysfs_mcast_flood() {
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local downstreams=$1
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local mcast_mode=$2
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local prt
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@ -157,6 +206,25 @@ config_sysfs_mcast_mode() {
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done
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}
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config_snooping_mode() {
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local interfaces="$1"
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local snooping="$2"
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# snooping_mode:
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# 0 - snooping is disabled
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# 1 - multicast flood is enabled
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# 2 - multicast flood is disabled
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[ -z "$snooping_mode" ] && snooping_mode=2
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if [ "$snooping_mode" == 0 ]; then
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config_sysfs_mcast_snooping "$interfaces" 0
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else
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config_sysfs_mcast_snooping "$interfaces" 1
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fi
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config_sysfs_mcast_flood "$interfaces" "$snooping_mode"
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}
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config_mcproxy_instance() {
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local protocol="$1"
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local version="$2"
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@ -195,6 +263,11 @@ config_mcproxy_instance() {
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upstreams=$igmp_p_up_interfaces
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downstreams=$igmp_p_down_interfaces
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mcast_mode=$igmp_p_mode
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# mcproxy reserves two multicast subscriptions for igmp router service groups
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local mg=$(cat /proc/sys/net/ipv4/igmp_max_memberships)
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mg=$((mg+2))
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echo $mg > /proc/sys/net/ipv4/igmp_max_memberships
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elif [ "$protocol" == "mld" ]; then
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case "$version" in
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[1-2])
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@ -228,21 +301,98 @@ config_mcproxy_instance() {
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# for snooping to work we should enable it on the bridge, doing it from
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# here instead of from inside network config
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config_sysfs_mcast_snooping "$downstreams"
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[ -n $fast_leave ] &&
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config_sysfs_mcast_fastleave "$downstreams" "$fast_leave"
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config_sysfs_mcast_mode "$downstreams" "$mcast_mode"
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if [ "$downstreams" != "$snooping_bridges" ]; then
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config_sysfs_mcast_snooping "$downstreams" 1
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[ -n $fast_leave ] &&
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config_sysfs_mcast_fastleave "$downstreams" "$fast_leave"
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config_sysfs_mcast_flood "$downstreams" "$mcast_mode"
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fi
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PROG_PARAMS="${PROG_PARAMS} -f ${CONFFILE}${PROG_PARAMS_SEPARATOR}"
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}
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config_snooping() {
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local protocol="$1"
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local version=
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local robustness=
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local query_interval=
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local q_resp_interval=
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local last_mem_q_int=
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local fast_leave=0
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local snooping_mode=
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local interfaces=
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local HZ=100
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local all_interfaces=
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if [ "$protocol" == "igmp" ]; then
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all_interfaces=$igmp_s_iface
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elif [ "$protocol" == "mld" ]; then
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all_interfaces=$mld_s_iface
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fi
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for iface in $all_interfaces; do
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device_is_bridge "$iface" || continue
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interfaces="$interfaces $iface"
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done
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[ -z "$interfaces" ] && return
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snooping_bridges="$interfaces"
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if [ "$protocol" == "igmp" ]; then
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case "$igmp_s_version" in
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[1-3])
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version="$igmp_s_version"
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;;
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*)
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version="2"
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;;
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esac
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robustness=$igmp_s_robustness
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query_interval=$(( igmp_s_query_interval * HZ ))
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q_resp_interval=$(( igmp_s_q_resp_interval * HZ / 10 ))
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last_mem_q_int=$(( igmp_s_last_mem_q_int * HZ / 10 ))
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fast_leave=$igmp_s_fast_leave
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snooping_mode=$igmp_s_mode
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elif [ "$protocol" == "mld" ]; then
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case "$mld_s_version" in
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[1-2])
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version="$mld_s_version"
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;;
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*)
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version="2"
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;;
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esac
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robustness=$mld_s_robustness
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query_interval=$(( mld_s_query_interval * HZ ))
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q_resp_interval=$(( mld_s_q_resp_interval * HZ / 10 ))
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last_mem_q_int=$(( mld_s_last_mem_q_int * HZ / 10 ))
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fast_leave=$mld_s_fast_leave
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snooping_mode=$mld_s_mode
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fi
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config_snooping_mode "$interfaces" "$snooping_mode"
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[ -n "$version" ] && config_sysfs_mcast_version "$protocol" "$interfaces" "$version"
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[ -n "$robustness" ] && config_sysfs_mcast_robustness "$interfaces" "$robustness"
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[ -n "$query_interval" ] && config_sysfs_mcast_query_interval "$interfaces" "$query_interval"
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[ -n "$q_resp_interval" ] && config_sysfs_mcast_q_resp_interval "$interfaces" "$q_resp_interval"
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[ -n "$last_mem_q_int" ] && config_sysfs_mcast_last_mem_q_int "$interfaces" "$last_mem_q_int"
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[ -n "$fast_leave" ] && config_sysfs_mcast_fastleave "$interfaces" "$fast_leave"
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}
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config_mcproxy() {
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if [ "$igmp_p_enable" == "1" ]; then
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config_mcproxy_instance igmp "$igmp_p_version"
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elif [ "$igmp_s_enable" == "1" ]; then
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config_snooping igmp "$igmp_s_version"
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fi
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if [ "$mld_p_enable" == "1" ]; then
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config_mcproxy_instance mld "$mld_p_version"
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elif [ "$mld_s_enable" == "1" ]; then
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config_snooping mld "$mld_s_version"
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fi
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}
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@ -253,11 +403,6 @@ setup_mcast_mode() {
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configure_mcast() {
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config_global_params "set_max_groups_and_sources"
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# mcproxy reserves two multicast subscriptions for igmp router service groups
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local mg=$(cat /proc/sys/net/ipv4/igmp_max_memberships)
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mg=$((mg+2))
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echo $mg > /proc/sys/net/ipv4/igmp_max_memberships
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read_mcast_snooping_params
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read_mcast_proxy_params
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config_mcproxy
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