yang, ripd: add 'frr-ripd.yang' and associated stub callbacks

Introduce frr-ripd.yang, which defines a model for managing the FRR
ripd daemon. Also add frr-route-types.yang which defines typedefs for
FRR route types.

Update the 'frr_yang_module_info' array of ripd with the new 'frr-ripd'
module.

Add two new files (rip_cli.[ch]) which should contain all ripd commands
converted to the new northbound model. Centralizing all commands in a
single place will facilitate the process of moving the CLI to a separate
program in the future.

Add automatically generated stub callbacks in rip_northbound.c. These
callbacks will be implemented gradually in the following commits.

Add example JSON/XML ripd configurations in yang/examples/.

Add the confd.frr-ripd.yang YANG module with annotations specific to
the ConfD daemon.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

1 files changed, 109 insertions, 0 deletions

diff --git a/yang/frr-route-types.yang b/yang/frr-route-types.yang
new file mode 100644
index 000000000..f22c5ef89
--- /dev/null
+++ b/yang/frr-route-types.yang
@@ -0,0 +1,109 @@
+module frr-route-types {
+  yang-version 1.1;
+  namespace "http://frrouting.org/yang/route-types";
+  prefix frr-route-types;
+
+  organization
+    "Free Range Routing";
+  contact
+    "FRR Users List:       <mailto:frog@lists.frrouting.org>
+     FRR Development List: <mailto:dev@lists.frrouting.org>";
+  description
+    "This module defines typedefs for route types.";
+
+  revision 2018-03-28 {
+    description
+      "Initial revision.";
+  }
+
+  typedef frr-route-types-v4 {
+    type enumeration {
+      enum kernel {
+        value 1;
+      }
+      enum connected {
+        value 2;
+      }
+      enum static {
+        value 3;
+      }
+      enum rip {
+        value 4;
+      }
+      enum ospf {
+        value 6;
+      }
+      enum isis {
+        value 8;
+      }
+      enum bgp {
+        value 9;
+      }
+      enum eigrp {
+        value 11;
+      }
+      enum nhrp {
+        value 12;
+      }
+      enum table {
+        value 15;
+      }
+      enum vnc {
+        value 17;
+      }
+      enum babel {
+        value 22;
+      }
+      enum sharp {
+        value 23;
+      }
+      enum openfabric {
+        value 26;
+      }
+    }
+  }
+
+  typedef frr-route-types-v6 {
+    type enumeration {
+      enum kernel {
+        value 1;
+      }
+      enum connected {
+        value 2;
+      }
+      enum static {
+        value 3;
+      }
+      enum ripng {
+        value 5;
+      }
+      enum ospf6 {
+        value 7;
+      }
+      enum isis {
+        value 8;
+      }
+      enum bgp {
+        value 9;
+      }
+      enum nhrp {
+        value 12;
+      }
+      enum table {
+        value 15;
+      }
+      enum vnc {
+        value 17;
+      }
+      enum babel {
+        value 22;
+      }
+      enum sharp {
+        value 23;
+      }
+      enum openfabric {
+        value 26;
+      }
+    }
+  }
+}