HC2VPP-288 - add SRv6 module (writers only)

Changes:
- add new module for SRv6
- add models for SRv6 configuration:
  from https://datatracker.ietf.org/doc/draft-raza-spring-srv6-yang/
   - hc2vpp-ietf-srv6-base@2018-03-01.yang
   - hc2vpp-ietf-srv6-static@2018-03-01.yang
   - ietf-srv6-types@2018-03-01.yang
- implements Configuration of local sids and their end functions.
- implements support for FIB table management (HC2VPP-345)

Models hc2vpp-ietf-srv6-base and hc2vpp-ietf-srv6-static
are changed (HC2VPP-332):
 - imports for routing models (HC2VPP-298)
 - presence in end function containers was added to fix
   mandatory child verification if parent container is not present

Change-Id: Ib74e48023b671383f076b84773e26ce7c5ae282a
Signed-off-by: Michal Cmarada <michal.cmarada@pantheon.tech>
Signed-off-by: Jan Srnicek <jan.srnicek@pantheon.tech>

1 files changed, 73 insertions, 0 deletions

diff --git a/srv6/srv6-api/src/main/yang/vpp-ietf-srv6-base@2018-06-13.yang b/srv6/srv6-api/src/main/yang/vpp-ietf-srv6-base@2018-06-13.yang
new file mode 100644
index 000000000..16aad11c8
--- /dev/null
+++ b/srv6/srv6-api/src/main/yang/vpp-ietf-srv6-base@2018-06-13.yang
@@ -0,0 +1,73 @@
+module vpp-ietf-srv6-base {
+
+    namespace "urn:hc2vpp:params:xml:ns:yang:vpp-ietf-srv6-base";
+    prefix vpp-ietf-srv6-base;
+
+    import hc2vpp-ietf-srv6-base {
+        prefix "ietf-srv6-base";
+        revision-date 2018-03-01;
+    }
+
+    import vpp-fib-table-management {
+        prefix fib-management;
+        revision-date 2018-05-21;
+    }
+
+    import hc2vpp-ietf-routing {
+        prefix "rt";
+    }
+
+    import yang-ext { prefix "ext"; }
+
+    organization
+        "FD.io - The Fast Data Project";
+
+    contact
+        "Hc2vpp Wiki <https://wiki.fd.io/view/Hc2vpp>
+         Mailing List <hc2vpp@lists.fd.io>";
+
+    description
+        "This module provides VPP specific configuration of FIB table management
+         for SRv6 base configuration.
+         It augments locator beacause, locator is the routable element in SRv6 and
+         because this is IPv6 specific configuration the address family for FIB has
+         to be always Ipv6.
+
+         Copyright (c) 2018 Bell Canada, Pantheon Technologies and/or its affiliates.
+
+         Licensed under the Apache License, Version 2.0 (the 'License');
+         you may not use this file except in compliance with the License.
+         You may obtain a copy of the License at:
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+         Unless required by applicable law or agreed to in writing, software
+         distributed under the License is distributed on an 'AS IS' BASIS,
+         WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+         See the License for the specific language governing permissions and
+         limitations under the License.";
+
+    revision 2018-06-13 {
+        description "initial revision";
+    }
+
+    grouping vpp-srv6-fib {
+        container fib-table {
+            leaf table-id {
+                type fib-management:fib-table-list-ref;
+                description "VRF index reference.";
+            }
+            leaf address-family {
+                type fib-management:address-family-type;
+                description "Address family reference. For SRv6 has to be always Ipv6.";
+            }
+        }
+    }
+
+    augment "/rt:routing/ietf-srv6-base:srv6/ietf-srv6-base:locators/ietf-srv6-base:locator" {
+        description "This augments locator leaf withing SRv6 with VPP specific configuration.";
+        ext:augment-identifier "vpp-srv6-fib-locator-augment";
+
+        uses vpp-srv6-fib;
+    }
+}