GBP Endpoint Learning

Learning GBP endpoints over vxlan-gbp tunnels

Change-Id: I1db9fda5a16802d9ad8b4efd4e475614f3b21502
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>

1 files changed, 133 insertions, 0 deletions

diff --git a/src/plugins/gbp/gbp_vxlan.h b/src/plugins/gbp/gbp_vxlan.h
new file mode 100644
index 00000000000..7aa22e351a2
--- /dev/null
+++ b/src/plugins/gbp/gbp_vxlan.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2018 Cisco 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.
+ */
+
+#ifndef __GBP_VXLAN_H__
+#define __GBP_VXLAN_H__
+
+#include <vnet/fib/fib_types.h>
+
+#define forecah_gbp_vxlan_tunnel_layer          \
+  _(L2, "l2")                                   \
+  _(L3, "l3")
+
+typedef enum gbp_vxlan_tunnel_layer_t_
+{
+#define _(s,n) GBP_VXLAN_TUN_##s,
+  forecah_gbp_vxlan_tunnel_layer
+#undef _
+} gbp_vxlan_tunnel_layer_t;
+
+/**
+ * GBP VXLAN (template) tunnel.
+ * A template tunnel has only a VNI, it does not have src,dst address.
+ * As such it cannot be used to send traffic. It is used in the RX path
+ * to RX vxlan-gbp packets that do not match an existing tunnel;
+ */
+typedef struct gbp_vxlan_tunnel_t_
+{
+  u32 gt_hw_if_index;
+  u32 gt_sw_if_index;
+  u32 gt_vni;
+
+  /**
+   * The BD or RD value (depending on the layer) that the tunnel is bound to
+   */
+  u32 gt_bd_rd_id;
+  gbp_vxlan_tunnel_layer_t gt_layer;
+
+  union
+  {
+    struct
+    {
+      /**
+       * BD index (if L2)
+       */
+      u32 gt_bd_index;
+      /**
+       * Reference to the GPB-BD
+       */
+      index_t gt_gbd;
+    };
+    struct
+    {
+      /**
+       * FIB inidices (if L3)
+       */
+      u32 gt_fib_index[FIB_PROTOCOL_IP_MAX];
+      /**
+       * References to the GBP-RD
+       */
+      index_t gt_grd;
+    };
+  };
+
+  /**
+   * gbp-itf config for this interface
+   */
+  index_t gt_itf;
+
+  /**
+   * list of child vxlan-gbp tunnels built from this template
+   */
+  index_t *gt_tuns;
+} gbp_vxlan_tunnel_t;
+
+/**
+ * The different types of interfaces that endpoints are learned on
+ */
+typedef enum gbp_vxlan_tunnel_type_t_
+{
+  /**
+   * This is the object type deifend above.
+   *  A template representation of a vxlan-gbp tunnel. from this tunnel
+   *  type, real vxlan-gbp tunnels are created (by cloning the VNI)
+   */
+  GBP_VXLAN_TEMPLATE_TUNNEL,
+
+  /**
+   * A real VXLAN-GBP tunnel (from vnet/vxlan-gbp/...)
+   */
+  VXLAN_GBP_TUNNEL,
+} gbp_vxlan_tunnel_type_t;
+
+extern int gbp_vxlan_tunnel_add (u32 vni, gbp_vxlan_tunnel_layer_t layer,
+				 u32 bd_rd_id, u32 * sw_if_indexp);
+extern int gbp_vxlan_tunnel_del (u32 vni);
+
+extern gbp_vxlan_tunnel_type_t gbp_vxlan_tunnel_get_type (u32 sw_if_index);
+
+extern u32 gbp_vxlan_tunnel_clone_and_lock (u32 parent_tunnel,
+					    const ip46_address_t * src,
+					    const ip46_address_t * dst);
+
+extern void vxlan_gbp_tunnel_lock (u32 sw_if_index);
+extern void vxlan_gbp_tunnel_unlock (u32 sw_if_index);
+extern u32 vxlan_gbp_tunnel_get_parent (u32 sw_if_index);
+
+typedef walk_rc_t (*gbp_vxlan_cb_t) (gbp_vxlan_tunnel_t * gt, void *ctx);
+extern void gbp_vxlan_walk (gbp_vxlan_cb_t cb, void *ctx);
+
+extern u8 *format_gbp_vxlan_tunnel (u8 * s, va_list * args);
+extern u8 *format_gbp_vxlan_tunnel_layer (u8 * s, va_list * args);
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */