tests/bgp-extended-nexthop: add gobgp

Author: DerDennisOP

flake.lock

@@ -1,7 +1,10 @@
-{ ... }:
+{ inputs, ... }:
 {
   name = "bgp-extended-nexthop";
 
+  # required in node c - gobgp module
+  node.pkgsReadOnly = false;
+
   defaults = {
     networking.firewall.allowedTCPPorts = [ 179 ];
   };
@@ -29,14 +32,20 @@
             neighbor fe80::2 capability extended-nexthop
             neighbor fe80::2 interface eth1
 
+            neighbor fe80::3 remote-as 64498
+            neighbor fe80::3 capability extended-nexthop
+            neighbor fe80::3 interface eth1
+
             address-family ipv4 unicast
               network 198.51.100.0/25
               neighbor fe80::2 activate
+              neighbor fe80::3 activate
             exit-address-family
 
             address-family ipv6 unicast
               network 2001:db8:beef::/48
               neighbor fe80::2 activate
+              neighbor fe80::3 activate
             exit-address-family
         '';
       };
@@ -73,14 +82,12 @@
           }
 
           protocol static static4 {
-            vrf "vrf0";
             ipv4;
 
             route 198.51.100.128/25 unreachable;
           }
 
           protocol static static6 {
-            vrf "vrf0";
             ipv6;
 
             route 2001:db8:c0de::/48 unreachable;
@@ -102,9 +109,117 @@
               export all;
             };
           }
+
+          protocol bgp c {
+            local as 64497;
+            neighbor fe80::3 as 64498;
+            interface "eth1";
+
+            ipv4 {
+              extended next hop on;
+              import all;
+              export all;
+            };
+
+            ipv6 {
+              import all;
+              export all;
+            };
+          }
         '';
       };
     };
+    c = {
+      imports = [ inputs.gobgp.nixosModules.gobgp ];
+      networking.interfaces.eth1.ipv6.addresses = [
+        {
+          address = "fe80::3";
+          prefixLength = 64;
+        }
+      ];
+      services.gobgpd = {
+        enable = true;
+        zebra = true;
+        validateConfig = false;
+        config = {
+          global = {
+            as = 64498;
+            router-id = "192.0.2.3";
+            apply-policy = {
+              default-import-policy = "accept-route";
+              export-policy-list = [ "c-out" ];
+              default-export-policy = "reject-route";
+            };
+          };
+          zebra = {
+            enabled = true;
+            redistribute-route-type-list = [
+              "kernel"
+              "directly-connected"
+              "static"
+            ];
+          };
+          static-paths = {
+            "unreachable-ipv4".prefix = "203.0.113.0/24";
+            "unreachable-ipv6".prefix = "2001:db8:dead::/48";
+          };
+          neighbors = {
+            "a" = {
+              neighbor-address = "fe80::1%eth1";
+              peer-as = 64496;
+              afi-safis = {
+                "ipv4-unicast" = { };
+                "ipv6-unicast" = { };
+              };
+            };
+            "b" = {
+              neighbor-address = "fe80::2%eth1";
+              peer-as = 64497;
+              afi-safis = {
+                "ipv4-unicast" = { };
+                "ipv6-unicast" = { };
+              };
+            };
+          };
+          defined-sets.prefix-sets = {
+            "c-out-ipv4".prefix-list = [
+              {
+                ip-prefix = "203.0.113.0/24";
+                masklength-range = "24..32";
+              }
+            ];
+            "c-out-ipv6".prefix-list = [
+              {
+                ip-prefix = "2001:db8:dead::/48";
+                masklength-range = "48..128";
+              }
+            ];
+          };
+          policy-definitions."c-out" = {
+            statements = {
+              "c-out-ipv4" = {
+                actions.route-disposition = "accept-route";
+                conditions = {
+                  match-prefix-set = {
+                    prefix-set = "c-out-ipv4";
+                    match-set-options = "any";
+                  };
+                };
+              };
+              "c-out-ipv6" = {
+                actions.route-disposition = "accept-route";
+                conditions = {
+                  match-prefix-set = {
+                    prefix-set = "c-out-ipv6";
+                    match-set-options = "any";
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
   };
 
   testScript = ''
@@ -117,14 +232,31 @@
     b.wait_for_unit("bird.service")
 
     with subtest("ensure bgp sessions are established"):
-      a.wait_until_succeeds("vtysh -c 'show bgp ipv4 summary' | grep 'fe80::2.*1\\s*2\\s*N/A'")
-      a.wait_until_succeeds("vtysh -c 'show bgp ipv6 summary' | grep 'fe80::2.*1\\s*2\\s*N/A'")
+      a.wait_until_succeeds("vtysh -c 'show bgp ipv4 summary' | grep 'fe80::2.*2\\s*3\\s*N/A'")
+      a.wait_until_succeeds("vtysh -c 'show bgp ipv4 summary' | grep 'fe80::3.*1\\s*3\\s*N/A'")
       b.wait_until_succeeds("birdc show protocols | grep 'a.*Established'")
+      b.wait_until_succeeds("birdc show protocols | grep 'c.*Established'")
+      c.wait_until_succeeds("gobgp neighbor -a 'ipv4' | grep 'fe80::1%eth1.*Establ.*|.*3.*2'")
+      c.wait_until_succeeds("gobgp neighbor -a 'ipv4' | grep 'fe80::2%eth1.*Establ.*|.*2.*2'")
+
+      # IPv6 DAD might need some time to complete for the local link address, which is required by frr
+      a.wait_until_succeeds("vtysh -c 'show bgp ipv6 summary' | grep 'fe80::2.*2\\s*3\\s*N/A'")
+      a.wait_until_succeeds("vtysh -c 'show bgp ipv6 summary' | grep 'fe80::3.*1\\s*3\\s*N/A'")
+      c.wait_until_succeeds("gobgp neighbor -a 'ipv6' | grep 'fe80::1%eth1.*Establ.*|.*3.*2'")
+      c.wait_until_succeeds("gobgp neighbor -a 'ipv6' | grep 'fe80::2%eth1.*Establ.*|.*2.*2'")
 
     with subtest("ensure routes have been installed"):
-      a.succeed("ip route show | grep 198.51.100.128/25")
       b.succeed("ip route show | grep 198.51.100.0/25")
-      a.succeed("ip -6 route show | grep 2001:db8:c0de::/48")
+      c.succeed("ip route show | grep 198.51.100.0/25")
+      a.succeed("ip route show | grep 198.51.100.128/25")
+      c.succeed("ip route show | grep 198.51.100.128/25")
+      a.succeed("ip route show | grep 203.0.113.0/24")
+      b.succeed("ip route show | grep 203.0.113.0/24")
       b.succeed("ip -6 route show | grep 2001:db8:beef::/48")
+      c.succeed("ip -6 route show | grep 2001:db8:beef::/48")
+      a.succeed("ip -6 route show | grep 2001:db8:c0de::/48")
+      c.succeed("ip -6 route show | grep 2001:db8:c0de::/48")
+      a.succeed("ip -6 route show | grep 2001:db8:dead::/48")
+      b.succeed("ip -6 route show | grep 2001:db8:dead::/48")
   '';
 }