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authorzsdc <taras@vyos.io>2021-04-15 00:20:44 +0300
committerzsdc <taras@vyos.io>2021-04-15 01:37:50 +0300
commit9ec8e2b6dc8144d4d5a17e53b1c183e22497580f (patch)
tree7df03db148712657d1df09f1fa026bb918331aa2 /src/etc/dhcp
parentf0c8d0be34ca3475b6e7f5da71cedb0bd4b5fd96 (diff)
downloadvyos-1x-9ec8e2b6dc8144d4d5a17e53b1c183e22497580f.tar.gz
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dhclient: T3392: Changed dhclient-script hooks for VRF
There were two problems with VRF support inside dhclient-script: - VRF check inside the `01-vyos-cleanup` hook was needless because it will be done inside the `03-vyos-ipwrapper` anyway; - VRF was ignored for in-kernel routes in `03-vyos-ipwrapper`. Theoretically, there must be no situation now when this can leads to a real problem, but better will be to keep both kernel and FRR backends in sync. Also, the way to get and use a VRF name was changed to an easier one.
Diffstat (limited to 'src/etc/dhcp')
-rw-r--r--src/etc/dhcp/dhclient-enter-hooks.d/03-vyos-ipwrapper21
-rw-r--r--src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup10
2 files changed, 11 insertions, 20 deletions
diff --git a/src/etc/dhcp/dhclient-enter-hooks.d/03-vyos-ipwrapper b/src/etc/dhcp/dhclient-enter-hooks.d/03-vyos-ipwrapper
index fc035766b..74a7e83bf 100644
--- a/src/etc/dhcp/dhclient-enter-hooks.d/03-vyos-ipwrapper
+++ b/src/etc/dhcp/dhclient-enter-hooks.d/03-vyos-ipwrapper
@@ -3,6 +3,9 @@
# default route distance
IF_METRIC=${IF_METRIC:-210}
+# Check if interface is inside a VRF
+VRF_OPTION=$(/usr/sbin/ip -j -d link show ${interface} | awk '{if(match($0, /.*"master":"(\w+)".*"info_slave_kind":"vrf"/, IFACE_DETAILS)) printf("vrf %s", IFACE_DETAILS[1])}')
+
# get status of FRR
function frr_alive () {
/usr/lib/frr/watchfrr.sh all_status
@@ -51,12 +54,7 @@ function iptovtysh () {
shift 2
fi
- # Add route to VRF routing table
- local VTYSH_VRF_NAME=$(/usr/sbin/ip link show dev $VTYSH_DEV | sed -nre '1s/.* master ([^ ]*) .*/\1/p')
- if /usr/sbin/ip -d link show dev $VTYSH_DEV | grep -q "vrf_slave"; then
- VTYSH_VRF="vrf $VTYSH_VRF_NAME"
- fi
- VTYSH_CMD="ip route $VTYSH_NETADDR $VTYSH_GATEWAY $VTYSH_DEV tag $VTYSH_TAG $VTYSH_DISTANCE $VTYSH_VRF"
+ VTYSH_CMD="ip route $VTYSH_NETADDR $VTYSH_GATEWAY $VTYSH_DEV tag $VTYSH_TAG $VTYSH_DISTANCE $VRF_OPTION"
# delete route if the command is "del"
if [ "$VTYSH_ACTION" == "del" ] ; then
@@ -67,10 +65,10 @@ function iptovtysh () {
# delete the same route from kernel before adding new one
function delroute () {
- logmsg info "Checking if the route presented in kernel: $@"
- if /usr/sbin/ip route show $@ | grep -qx "$1 " ; then
- logmsg info "Deleting IP route: \"/usr/sbin/ip route del $@\""
- /usr/sbin/ip route del $@
+ logmsg info "Checking if the route presented in kernel: $@ $VRF_OPTION"
+ if /usr/sbin/ip route show $@ $VRF_OPTION | grep -qx "$1 " ; then
+ logmsg info "Deleting IP route: \"/usr/sbin/ip route del $@ $VRF_OPTION\""
+ /usr/sbin/ip route del $@ $VRF_OPTION
fi
}
@@ -90,8 +88,7 @@ function ip () {
else
# add ip route to kernel
logmsg info "Modifying routes in kernel: \"/usr/sbin/ip $@\""
- /usr/sbin/ip $@
+ /usr/sbin/ip $@ $VRF_OPTION
fi
fi
}
-
diff --git a/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup b/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup
index edb7c7b27..694d53b6b 100644
--- a/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup
+++ b/src/etc/dhcp/dhclient-exit-hooks.d/01-vyos-cleanup
@@ -17,14 +17,8 @@ if [[ $reason =~ (EXPIRE|FAIL|RELEASE|STOP) ]]; then
# try to delete default ip route
for router in $old_routers; do
- # check if we are bound to a VRF
- local vrf_name=$(basename /sys/class/net/${interface}/upper_* | sed -e 's/upper_//')
- if [ -n $vrf_name ]; then
- vrf="vrf $vrf_name"
- fi
-
- logmsg info "Deleting default route: via $router dev ${interface} ${if_metric:+metric $if_metric} ${vrf}"
- ip -4 route del default via $router dev ${interface} ${if_metric:+metric $if_metric} ${vrf}
+ logmsg info "Deleting default route: via $router dev ${interface} ${if_metric:+metric $if_metric}"
+ ip -4 route del default via $router dev ${interface} ${if_metric:+metric $if_metric}
if_metric=$((if_metric+1))
done