zebra: copy logical-router-command under vrf subnode

a vty command is added:
in addition to this command ( kept for future usage):
- [no] logical-router-id <ID> netns <NETNSNAME>
a new command is being placed under vrf subnode
- vrf <NAME>
   [no] netns <NETNSNAME>
  exit

This command permits to map a VRF with a Netnamespace.
The commit only handles the relationship between vrf and ns structures.
It adds 2 attributes to vrf structure:
- one defines the kind of vrf ( mapped under netns or vrf from kernel)
- the other is the opaque pointer to ns
The show running-config is handled by zebra daemon.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/zebra/zebra_ns.c b/zebra/zebra_ns.c
index 1715881f7e..80847518a7 100644
--- a/zebra/zebra_ns.c
+++ b/zebra/zebra_ns.c
@@ -1,6 +1,7 @@
 /* zebra NS Routines
  * Copyright (C) 2016 Cumulus Networks, Inc.
  *                    Donald Sharp
+ * Copyright (C) 2017/2018 6WIND
  *
  * This file is part of Quagga.
  *
@@ -177,3 +178,10 @@ int zebra_ns_init(void)
 
 	return 0;
 }
+
+int zebra_ns_config_write(struct vty *vty, struct ns *ns)
+{
+	if (ns && ns->name != NULL)
+		vty_out(vty, " netns %s\n", ns->name);
+	return 0;
+}