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(do not merge) test init script with resources off #3140

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10f53b7
Add switches to the host init script to toggle legacy behaviour
dxapd Sep 1, 2026
094f236
flip the flag off to see if the test fails
dxapd Sep 3, 2026
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17 changes: 17 additions & 0 deletions base/debian/cuttlefish-base.cuttlefish-host-resources.default
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Original file line number Diff line number Diff line change
Expand Up @@ -36,3 +36,20 @@
#wifi_ipv6_prefix_length=
#ethernet_ipv6_prefix=
#ethernet_ipv6_prefix_length=

# Behavioural settings during the transition to cvdalloc.
#
# allocate_static_resources sets up all of the resources
# expected by the legacy flow. initialize_cvdalloc simply invokes
# cvdalloc to perform its own per-install setup.
# Note that for cvd itself to use cvdalloc, it will need the
# use_cvdalloc flag to be set on its own end.
#
# Static resources are disjoint to those allocated by cvdalloc.
# Thus, the legacy behaviour is maintained by the below defaults.
#
# The only invalid combination is `allocate_static_resources=0`
# with the cvd flag `use_cvdalloc` flipped off.
#
#allocate_static_resources=1
#initialize_cvdalloc=0
161 changes: 89 additions & 72 deletions base/debian/cuttlefish-base.cuttlefish-host-resources.init
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,8 @@ ipv4_bridge=${ipv4_bridge:-1}
ipv6_bridge=${ipv6_bridge:-1}
dns_servers=${dns_servers:-8.8.8.8,8.8.4.4}
dns6_servers=${dns6_servers:-2001:4860:4860::8888,2001:4860:4860::8844}
allocate_static_resources=${allocate_static_resources:-0}
initialize_cvdalloc=${initialize_cvdalloc:-0}

readonly CUTTLEFISH_RUN_DIR="/run/cuttlefish"

Expand Down Expand Up @@ -109,18 +111,30 @@ destroy_tap() {
setup_nftables() {
mkdir -p "$CUTTLEFISH_RUN_DIR"

# Ensure nftables tables and chains exist.
nft add table ip cuttlefish_nat
nft add chain ip cuttlefish_nat postrouting '{ type nat hook postrouting priority 100 ; }'
if [ "${initialize_cvdalloc}" = "1" ] && [ -x /usr/lib/cuttlefish-common/bin/cvdalloc ]; then
/usr/lib/cuttlefish-common/bin/cvdalloc --setup
fi

if [ "${allocate_static_resources}" = "1" ]; then
# Ensure nftables tables and chains exist.
nft add table ip cuttlefish_nat
nft add chain ip cuttlefish_nat postrouting '{ type nat hook postrouting priority 100 ; }'

nft add table bridge cuttlefish_bridge
nft add chain bridge cuttlefish_bridge prerouting '{ type filter hook prerouting priority -250 ; }'
nft add chain bridge cuttlefish_bridge forward '{ type filter hook forward priority 0 ; }'
nft add table bridge cuttlefish_bridge
nft add chain bridge cuttlefish_bridge prerouting '{ type filter hook prerouting priority -250 ; }'
nft add chain bridge cuttlefish_bridge forward '{ type filter hook forward priority 0 ; }'
fi
}

delete_nftables() {
nft delete table ip cuttlefish_nat
nft delete table bridge cuttlefish_bridge
if [ "${initialize_cvdalloc}" = "1" ] && [ -x /usr/lib/cuttlefish-common/bin/cvdalloc ]; then
/usr/lib/cuttlefish-common/bin/cvdalloc --teardown
fi

if [ "${allocate_static_resources}" = "1" ]; then
nft delete table ip cuttlefish_nat
nft delete table bridge cuttlefish_bridge
fi
}


Expand Down Expand Up @@ -331,43 +345,44 @@ start() {

setup_nftables


# Ethernet
# 192.168.98.X for cvd-ebr and cvd-etap-XX
create_bridged_interfaces \
192.168.98 "${ethernet_bridge_interface}" cvd-etap \
"${ethernet_ipv6_prefix}" "${ethernet_ipv6_prefix_length}"

# Mobile Network
# 192.168.97.X from cvd-mtap-01 to cvd-mtap-64
# 192.168.93.X from cvd-mtap-65 to cvd-mtap-128
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-mtap-%02d $i)"
if [ $i -lt 65 ]; then
create_interface $tap 192.168.97 $i
elif [ $i -lt 129 ]; then
create_interface $tap 192.168.93 $(($i - 64))
fi
done

# Wireless Network
# cvd-wbr and cvd-wtap-XX for legacy wireless network without distinguished
# subnet between tap interfaces, cvd-wifiap-XX with distinguished subnet for
# running several OpenWRT instances simultaneously.
# 192.168.96.X for cvd-wbr and cvd-wtap-XX
# 192.168.94.X from cvd-wifiap-01 to cvd-wifiap-64
# 192.168.95.X from cvd-wifiap-65 to cvd-wifiap-128
create_bridged_interfaces \
192.168.96 "${wifi_bridge_interface}" cvd-wtap \
"${wifi_ipv6_prefix}" "${wifi_ipv6_prefix_length}"
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-wifiap-%02d $i)"
if [ $i -lt 65 ]; then
create_interface $tap 192.168.94 $i
elif [ $i -lt 129 ]; then
create_interface $tap 192.168.95 $(($i - 64))
fi
done
if [ "${allocate_static_resources}" = "1" ]; then
# Ethernet
# 192.168.98.X for cvd-ebr and cvd-etap-XX
create_bridged_interfaces \
192.168.98 "${ethernet_bridge_interface}" cvd-etap \
"${ethernet_ipv6_prefix}" "${ethernet_ipv6_prefix_length}"

# Mobile Network
# 192.168.97.X from cvd-mtap-01 to cvd-mtap-64
# 192.168.93.X from cvd-mtap-65 to cvd-mtap-128
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-mtap-%02d $i)"
if [ $i -lt 65 ]; then
create_interface $tap 192.168.97 $i
elif [ $i -lt 129 ]; then
create_interface $tap 192.168.93 $(($i - 64))
fi
done

# Wireless Network
# cvd-wbr and cvd-wtap-XX for legacy wireless network without distinguished
# subnet between tap interfaces, cvd-wifiap-XX with distinguished subnet for
# running several OpenWRT instances simultaneously.
# 192.168.96.X for cvd-wbr and cvd-wtap-XX
# 192.168.94.X from cvd-wifiap-01 to cvd-wifiap-64
# 192.168.95.X from cvd-wifiap-65 to cvd-wifiap-128
create_bridged_interfaces \
192.168.96 "${wifi_bridge_interface}" cvd-wtap \
"${wifi_ipv6_prefix}" "${wifi_ipv6_prefix_length}"
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-wifiap-%02d $i)"
if [ $i -lt 65 ]; then
create_interface $tap 192.168.94 $i
elif [ $i -lt 129 ]; then
create_interface $tap 192.168.95 $(($i - 64))
fi
done
fi

# When running inside a privileged container, set the ownership and access
# of these device nodes.
Expand All @@ -385,33 +400,35 @@ start() {
}

stop() {
# Ethernet
destroy_bridged_interfaces \
192.168.98 "${ethernet_bridge_interface}" cvd-etap \
"${ethernet_ipv6_prefix}" "${ethernet_ipv6_prefix_length}"

# Mobile Network
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-mtap-%02d $i)"
if [ $i -lt 65 ]; then
destroy_interface $tap 192.168.97 $i
elif [ $i -lt 129 ]; then
destroy_interface $tap 192.168.93 $(($i - 64))
fi
done

# Wireless Network
destroy_bridged_interfaces \
192.168.96 "${wifi_bridge_interface}" cvd-wtap \
"${wifi_ipv6_prefix}" "${wifi_ipv6_prefix_length}"
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-wifiap-%02d $i)"
if [ $i -lt 65 ]; then
destroy_interface $tap 192.168.94 $i
elif [ $i -lt 129 ]; then
destroy_interface $tap 192.168.95 $(($i - 64))
fi
done
if [ "${allocate_static_resources}" = "1" ]; then
# Ethernet
destroy_bridged_interfaces \
192.168.98 "${ethernet_bridge_interface}" cvd-etap \
"${ethernet_ipv6_prefix}" "${ethernet_ipv6_prefix_length}"

# Mobile Network
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-mtap-%02d $i)"
if [ $i -lt 65 ]; then
destroy_interface $tap 192.168.97 $i
elif [ $i -lt 129 ]; then
destroy_interface $tap 192.168.93 $(($i - 64))
fi
done

# Wireless Network
destroy_bridged_interfaces \
192.168.96 "${wifi_bridge_interface}" cvd-wtap \
"${wifi_ipv6_prefix}" "${wifi_ipv6_prefix_length}"
for i in $(seq ${num_cvd_accounts}); do
tap="$(printf cvd-wifiap-%02d $i)"
if [ $i -lt 65 ]; then
destroy_interface $tap 192.168.94 $i
elif [ $i -lt 129 ]; then
destroy_interface $tap 192.168.95 $(($i - 64))
fi
done
fi
delete_nftables
}

Expand Down
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