From 1cfbc01b6a3d657058856433ecd97ea9181e5019 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sun, 11 Aug 2024 20:10:31 +0200
Subject: tnet: Updating changes from knot.

---
 tnet/templates/bird-tnet-pre.conf.j2 |  2 +-
 tnet/templates/bird-tnet.conf.j2     | 35 ++++++++++++++++++++++-------------
 2 files changed, 23 insertions(+), 14 deletions(-)

(limited to 'tnet/templates')

diff --git a/tnet/templates/bird-tnet-pre.conf.j2 b/tnet/templates/bird-tnet-pre.conf.j2
index ec31fa2..383c050 100644
--- a/tnet/templates/bird-tnet-pre.conf.j2
+++ b/tnet/templates/bird-tnet-pre.conf.j2
@@ -3,7 +3,7 @@ define tnet_router = fdb1:4242:3538:ffff::/64;
 
 function is_tnet() # -> bool
 {
-  return net ~ tnet && ! (net ~ tnet_router);
+  return net ~ tnet && (net !~ tnet_router);
 }
 
 roa6 table dn42_roa;
diff --git a/tnet/templates/bird-tnet.conf.j2 b/tnet/templates/bird-tnet.conf.j2
index 9797241..49e9410 100644
--- a/tnet/templates/bird-tnet.conf.j2
+++ b/tnet/templates/bird-tnet.conf.j2
@@ -1,3 +1,9 @@
+# Set to true if this peer is directly connected to a dn42 peer
+define is_dn42_peer = true;
+# If we are connected directly to dn42, we don't want the dn42 routes from others
+define import_dn42 = !is_dn42_peer;
+define export_dn42 = is_dn42_peer;
+
 template bgp tnet_tpl {
   local    as 4242423538;
   neighbor internal;
@@ -10,19 +16,23 @@ template bgp tnet_tpl {
     next hop self;
     import filter {
       if is_tnet() then {
-        print proto, ": import accept, net=", net, ", from=", from, ", gw=", gw;
-        accept;
+        accept proto, ": (tnet) import accept, net=", net, ", from=", from, ", gw=", gw;
+      } else if import_dn42 && dn42_is_valid_network() then {
+        accept proto, ": (dn42) import accept, net=", net, ", from=", from, ", gw=", gw;
+      } else {
+        reject proto, ": import reject, reason=not tnet";
       }
-      print proto, ": import reject, reason=not tnet"; reject;
     };
     # newer bird's only
     # import keep filtered;
     export filter {
       if is_tnet() then {
-        print proto, ": export accept, net=", net, ", from=", from, ", gw=", gw;
-        accept;
+        accept proto, ": (tnet) export accept, net=", net, ", from=", from, ", gw=", gw;
+      } else if export_dn42 && dn42_is_valid_network() then {
+        accept proto, ": (dn42) import accept, net=", net, ", from=", from, ", gw=", gw;
+      } else {
+        reject proto, ": export reject, reason=not tnet";
       }
-      print proto, ": export reject, reason=not tnet"; reject;
     };
   };
 }
@@ -50,23 +60,22 @@ protocol bgp {{ p }} {
 
   ipv6 {
     import filter {
-      if dn42_is_valid_network() && !is_tnet() then {
+      if dn42_is_valid_network() && (net !~ tnet) then {
         # Check when unknown or invalid according to ROA
         if (roa_check(dn42_roa, net, bgp_path.last) = ROA_VALID) then {
           accept;
         } else {
-          print "[dn42] ROA check failed for ", net, " ASN ", bgp_path.last;
-          reject;
+          reject proto, "[dn42] ROA check failed for ", net, " ASN ", bgp_path.last;
         }
       } else {
-        reject;
+        reject proto, "[dn42] invalid dn42 network ", net, " ASN ", bgp_path.last;
       }
     };
     export filter {
-      if dn42_is_valid_network() && source ~ [RTS_STATIC, RTS_BGP] then {
-        accept;
+      if net ~ tnet then {
+        accept proto, "[dn42] accepting export tnet: ", net;
       } else {
-        reject;
+        reject proto, "[dn42] rejecting export: ", net;
       }
     };
   };
-- 
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