[Chassis][Voq]Configure midplane network on supervisor (#11725)
Multi-asic Docker instances are created behind Docker's default bridge which doesn't allow talking to other Docker instances that are in the host network (like database-chassis). On linecards, we configure midplane interfaces to let per-asic docker containers talk to CHASSIS_DB on the supervisor through internal chassis network. On the supervisor we don't need to use chassis internal network, but we still need a similar setup in order to allow fabric containers to talk to database-chassis
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@ -1,5 +1,6 @@
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start_chassis_db=1
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chassis_db_address=127.100.1.1
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midplane_subnet=127.100.0.0/16
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lag_id_start=1
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lag_id_end=128
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@ -170,16 +170,26 @@ function postStartAction()
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ip netns exec "$NET_NS" ip addr add 127.0.0.1/16 dev lo
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ip netns exec "$NET_NS" ip addr del 127.0.0.1/8 dev lo
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slot_id=$(python3 -c 'import sonic_platform.platform; platform_chassis = sonic_platform.platform.Platform().get_chassis(); print(platform_chassis.get_my_slot())' 2>/dev/null)
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supervisor_slot_id=$(python3 -c 'import sonic_platform.platform; platform_chassis = sonic_platform.platform.Platform().get_chassis(); print(platform_chassis.get_supervisor_slot())' 2>/dev/null)
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# Create eth1 in database instance
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if [[ "${slot_id}" == "${supervisor_slot_id}" ]]; then
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ip link add name ns-eth1"$NET_NS" type veth peer name eth1@"$NET_NS"
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ip link set dev eth1@"$NET_NS" master br1
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ip link set dev eth1@"$NET_NS" up
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else
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ip link add name ns-eth1"$NET_NS" link eth1-midplane type macvlan mode bridge
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fi
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# Create eth1 in database instance
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ip link add name ns-eth1"$NET_NS" link eth1-midplane type macvlan mode bridge
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ip link set dev ns-eth1"$NET_NS" netns "$NET_NS"
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ip netns exec "$NET_NS" ip link set ns-eth1"$NET_NS" name eth1
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# Configure IP address and enable eth1
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lc_slot_id=$(python3 -c 'import sonic_platform.platform; platform_chassis = sonic_platform.platform.Platform().get_chassis(); print(platform_chassis.get_my_slot())' 2>/dev/null)
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lc_ip_address=`echo $midplane_subnet | awk -F. '{print $1 "." $2}'`.$lc_slot_id.$(($DEV + 10))
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lc_subnet_mask=${midplane_subnet#*/}
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ip netns exec "$NET_NS" ip addr add $lc_ip_address/$lc_subnet_mask dev eth1
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slot_ip_address=`echo $midplane_subnet | awk -F. '{print $1 "." $2}'`.$slot_id.$(($DEV + 10))
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slot_subnet_mask=${midplane_subnet#*/}
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ip netns exec "$NET_NS" ip addr add $slot_ip_address/$slot_subnet_mask dev eth1
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ip netns exec "$NET_NS" ip link set dev eth1 up
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# Allow localnet routing on the new interfaces if midplane is using a
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