Add a simple containerlab

.gitignore

@@ -0,0 +1,2 @@
+clab-*
+**/*.bak

README.md

@@ -2,24 +2,24 @@
 
 This docker container creates a VPP instance based on the latest VPP release. It starts up as per
 normal, using /etc/vpp/startup.conf (which Containerlab might replace when it starts its
-containers). Once started, it'll execute /etc/vpp/bootstrap.vpp within the dataplane. There are
-three relevant files:
+containers). Once started, it'll execute `/etc/vpp/bootstrap.vpp` within the dataplane. There are
+two relevant files:
 
-1.   `manual-pre.vpp` -- can be supplied by the user, to run any configuration statements before
-     containerlab takes control.
-
-1.   `clab.vpp` -- generated by `files/container-init.sh`. Its purpose is to bind the `veth`
+1.   `clab.vpp` -- generated by `files/init-container.sh`. Its purpose is to bind the `veth`
      interfaces that containerlab has added to the container into the VPP dataplane (see below).
+1.   `vppcfg.vpp` -- generated by `files/init-container.sh`. Its purpose is to read the user
+     specified `vppcfg.yaml` file and convert it into VPP CLI commands. If no YAML file is
+     specified, or if it is not syntactically valid, an empty file is generated instead.
 
-1.   `manual-post.vpp` -- can be supplied by the user, to run any configuration statements after
-     containerlab is finished with its per-lab statements.
+For Containerlab users who wish to have more control over their VPP bootstrap, it's possible to
+bind-mount `/etc/vpp/bootstrap.vpp`.
 
 ## Building
 
 ```bash
 IMG=git.ipng.ch/ipng/vpp-containerlab
 TAG=latest
-docker build --no-cache -f Dockerfile.bookworm -t $IMG .
+docker build --no-cache -f docker/Dockerfile.bookworm -t $IMG docker/
 docker image tag $IMG $IMG:$TAG
 docker push $IMG
 docker push $IMG:$TAG

config/vpp1/bird-local.conf

@@ -0,0 +1,19 @@
+protocol bfd bfd1 {
+  interface "eth2" { interval 100 ms; multiplier 30; };
+}
+
+protocol ospf v2 ospf4 {
+  ipv4 { import all; export all; };
+  area 0 {
+    interface "loop0" { stub yes; };
+    interface "eth2" { type pointopoint; cost 10; bfd on; };
+  };
+}
+
+protocol ospf v3 ospf6 {
+  ipv6 { import all; export all; };
+  area 0 {
+    interface "loop0" { stub yes; };
+    interface "eth2" { type pointopoint; cost 10; bfd on; };
+  };
+}

config/vpp1/vppcfg.yaml

@@ -0,0 +1,16 @@
+interfaces:
+  eth1:
+    description: 'To client1'
+    mtu: 1500
+    lcp: eth1
+    addresses: [ 10.82.98.65/28, 2001:db8:8298:101::1/64 ]
+  eth2:
+    description: 'To vpp2'
+    mtu: 9000
+    lcp: eth2
+    addresses: [ 10.82.98.16/31, 2001:db8:8298:1::1/64 ]
+loopbacks:
+  loop0:
+    description: 'vpp1'
+    lcp: loop0
+    addresses: [ 10.82.98.0/32, 2001:db8:8298::/128 ]

config/vpp2/bird-local.conf

@@ -0,0 +1,19 @@
+protocol bfd bfd1 {
+  interface "eth2" { interval 100 ms; multiplier 30; };
+}
+
+protocol ospf v2 ospf4 {
+  ipv4 { import all; export all; };
+  area 0 {
+    interface "loop0" { stub yes; };
+    interface "eth2" { type pointopoint; cost 10; bfd on; };
+  };
+}
+
+protocol ospf v3 ospf6 {
+  ipv6 { import all; export all; };
+  area 0 {
+    interface "loop0" { stub yes; };
+    interface "eth2" { type pointopoint; cost 10; bfd on; };
+  };
+}

config/vpp2/vppcfg.yaml

@@ -0,0 +1,16 @@
+interfaces:
+  eth1:
+    description: 'To client2'
+    mtu: 1500
+    lcp: eth1
+    addresses: [ 10.82.98.81/28, 2001:db8:8298:102::1/64 ]
+  eth2:
+    description: 'To vpp1'
+    mtu: 9000
+    lcp: eth2
+    addresses: [ 10.82.98.17/31, 2001:db8:8298:1::2/64 ]
+loopbacks:
+  loop0:
+    description: 'vpp2'
+    lcp: loop0
+    addresses: [ 10.82.98.1/32, 2001:db8:8298::1/128 ]

docker/Dockerfile.bookworm

@@ -4,7 +4,8 @@ ARG VPP_INSTALL_SKIP_SYSCTL=true
 ARG REPO=release
 EXPOSE 22/tcp
 RUN apt-get update && apt-get -y install curl procps tcpdump iproute2 iptables \
-  iputils-ping net-tools git python3 python3-pip vim-tiny openssh-server && apt-get clean
+  iputils-ping net-tools git python3 python3-pip vim-tiny openssh-server bird2 \
+  mtr-tiny traceroute && apt-get clean
 
 # Install VPP
 RUN mkdir -p /var/log/vpp /root/.ssh/
@@ -17,7 +18,8 @@ RUN git clone https://github.com/pimvanpelt/vppcfg.git && cd vppcfg && python3 -
     pip install --break-system-packages dist/vppcfg-*-py3-none-any.whl
 
 # Config files
-COPY files/startup.conf files/*.vpp /etc/vpp/
+COPY files/etc/vpp/* /etc/vpp/
+COPY files/etc/bird/* /etc/bird/
 COPY files/init-container.sh /sbin/
 RUN chmod 755 /sbin/init-container.sh
 CMD ["/sbin/init-container.sh"]

docker/files/etc/bird/bird-local.conf

@@ -0,0 +1 @@
+# Containerlab user overrides go in this file.

docker/files/etc/bird/bird.conf

@@ -0,0 +1,26 @@
+# Bird2 configuration for VPP Containerlab
+
+# router id 192.0.2.0;
+
+timeformat base         iso long;
+timeformat log          iso long;
+timeformat protocol     iso long;
+timeformat route        iso long;
+
+log "/var/log/bird/bird.log" { debug, trace, info, remote, warning, error, auth, fatal, bug };
+
+protocol device { scan time 30; }
+
+protocol direct { ipv4; ipv6; check link yes; }
+
+protocol kernel kernel4 {
+  ipv4 { import none; export where source != RTS_DEVICE; };
+  learn off; scan time 300;
+}
+
+protocol kernel kernel6 {
+  ipv6 { import none; export where source != RTS_DEVICE; };
+  learn off; scan time 300;
+}
+        
+include "bird-local.conf";

docker/files/etc/vpp/bootstrap.vpp

@@ -0,0 +1,2 @@
+exec /etc/vpp/clab.vpp
+exec /etc/vpp/vppcfg.vpp

docker/files/etc/vpp/startup.conf

@@ -1,3 +1,6 @@
+# This is the vpp-containerlab default startup.conf, which is meant to be
+# overridden by Containerlab's node/fdio_vpp/vpp_startup_config.go.tpl
+
 unix {
   interactive
   log /var/log/vpp/vpp.log

docker/files/init-container.sh

@@ -2,7 +2,9 @@
 
 STARTUP_CONFIG=${STARTUP_CONFIG:="/etc/vpp/startup.conf"}
 CLAB_VPP_FILE=${CLAB_VPP_FILE:=/etc/vpp/clab.vpp}
+VPPCFG_VPP_FILE=${VPPCFG_VPP_FILE:=/etc/vpp/vppcfg.vpp}
 NETNS=${NETNS:="dataplane"}
+BIRD_ENABLED=${BIRD_ENABLED:="true"}
 
 echo "Creating dataplane namespace"
 /usr/bin/mkdir -p /etc/netns/$NETNS
@@ -14,6 +16,15 @@ sed -i -e 's,^#PermitRootLogin prohibit-password,PermitRootLogin yes,' /etc/ssh/
 sed -i -e 's,^root:.*,root:$y$j9T$kG8pyZEVmwLXEtXekQCRK.$9iJxq/bEx5buni1hrC8VmvkDHRy7ZMsw9wYvwrzexID:20211::::::,' /etc/shadow
 /etc/init.d/ssh start
 
+if [ "$BIRD_ENABLED" == "true" ]; then
+  echo "Starting Bird in $NETNS"
+  mkdir -p /run/bird /var/log/bird
+  chown bird:bird /var/log/bird
+  ROUTERID=$(ip -br a show eth0 | awk '{ print $3 }' | cut -f1 -d/)
+  sed -i -e "s,.*router id .*,router id $ROUTERID; # Set by container-init.sh," /etc/bird/bird.conf
+  /usr/bin/nsenter --net=/var/run/netns/$NETNS /usr/sbin/bird -u bird -g bird
+fi
+
 echo "Generating $CLAB_VPP_FILE"
 : > $CLAB_VPP_FILE
 MTU=9216
@@ -30,5 +41,11 @@ set interface state $IFNAME up
 EOF
 done
 
+echo "Generating $VPPCFG_VPP_FILE"
+: > $VPPCFG_VPP_FILE
+if [ -r /etc/vpp/vppcfg.yaml ]; then
+  vppcfg plan --novpp -c /etc/vpp/vppcfg.yaml -o $VPPCFG_VPP_FILE
+fi
+
 echo "Starting VPP"
 exec /usr/bin/vpp -c $STARTUP_CONFIG

files/bootstrap.vpp

@@ -1,3 +0,0 @@
-exec /etc/vpp/manual-pre.vpp
-exec /etc/vpp/clab.vpp
-exec /etc/vpp/manual-post.vpp

files/manual-post.vpp

@@ -1 +0,0 @@
-comment { These commands are executed after Containerlab stuff }

files/manual-pre.vpp

@@ -1 +0,0 @@
-comment { These commands are executed before Containerlab stuff }

vpp.clab.yml

@@ -0,0 +1,42 @@
+name: learn-vpp
+prefix: ""
+
+topology:
+  kinds:
+    fdio_vpp:
+      image: git.ipng.ch/ipng/vpp-containerlab:latest
+    linux:
+      image: alpine:latest
+
+  nodes:
+    vpp1:
+      kind: fdio_vpp
+      binds:
+        - config/vpp1/vppcfg.yaml:/etc/vpp/vppcfg.yaml:ro
+        - config/vpp1/bird-local.conf:/etc/bird/bird-local.conf:ro
+    vpp2:
+      kind: fdio_vpp
+      binds:
+        - config/vpp2/vppcfg.yaml:/etc/vpp/vppcfg.yaml:ro
+        - config/vpp2/bird-local.conf:/etc/bird/bird-local.conf:ro
+    client1:
+      kind: linux
+      exec:
+        - ip link set address 00:c1:ab:00:00:01 dev eth1
+        - ip addr add 10.82.98.66/28 dev eth1
+        - ip route add 10.82.98.0/24 via 10.82.98.65
+        - ip addr add 2001:db8:8298:101::2/64 dev eth1
+        - ip route add 2001:db8:8298::/48 via 2001:db8:8298:101::1
+    client2:
+      kind: linux
+      exec:
+        - ip link set address 00:c1:ab:00:00:02 dev eth1
+        - ip addr add 10.82.98.82/28 dev eth1
+        - ip route add 10.82.98.0/24 via 10.82.98.81
+        - ip addr add 2001:db8:8298:102::2/64 dev eth1
+        - ip route add 2001:db8:8298::/48 via 2001:db8:8298:102::1
+
+  links:
+    - endpoints: ["vpp1:eth2", "vpp2:eth2"]
+    - endpoints: ["client1:eth1", "vpp1:eth1"]
+    - endpoints: ["client2:eth1", "vpp2:eth1"]