VPP-470: Introduce VxLAN-GPE as transport for iOAM.

See Jira ticket for more details
- New plugins created to (a) Add VxLAN-GPE as transport (b) Provide export infra for
  VxLAN-GPE.

Change-Id: Ife50c7434f53d17a4783062310f73d063d53494c
Signed-off-by: Vengada Govindan <venggovi@cisco.com>

1 files changed, 142 insertions, 0 deletions

diff --git a/plugins/ioam-plugin/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h b/plugins/ioam-plugin/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h
new file mode 100644
index 00000000000..ac824809b4f
--- /dev/null
+++ b/plugins/ioam-plugin/ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2015 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 __included_vxlan_gpe_ioam_h__
+#define __included_vxlan_gpe_ioam_h__
+
+#include <vnet/vxlan-gpe/vxlan_gpe.h>
+#include <vnet/vxlan-gpe/vxlan_gpe_packet.h>
+#include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_packet.h>
+#include <vnet/ip/ip.h>
+
+
+typedef struct vxlan_gpe_ioam_main_
+{
+  /* time scale transform. Joy. */
+  u32 unix_time_0;
+  f64 vlib_time_0;
+
+
+  /* Trace option */
+  u8 has_trace_option;
+
+  /* Pot option */
+  u8 has_pot_option;
+
+#define PPC_NONE  0
+#define PPC_ENCAP 1
+#define PPC_DECAP 2
+  u8 has_ppc_option;
+
+#define TSP_SECONDS              0
+#define TSP_MILLISECONDS         1
+#define TSP_MICROSECONDS         2
+#define TSP_NANOSECONDS          3
+
+  /* Array of function pointers to ADD and POP VxLAN-GPE iOAM option handling routines */
+  u8 options_size[256];
+  int (*add_options[256]) (u8 * rewrite_string, u8 * rewrite_size);
+  int (*pop_options[256]) (ip4_header_t * ip, vxlan_gpe_ioam_option_t * opt);
+
+  /* Array of function pointers to iOAM option handling routines */
+  int (*options[256]) (vlib_buffer_t * b, vxlan_gpe_ioam_option_t * opt,
+		       u8 is_ipv4, u8 use_adj);
+  u8 *(*trace[256]) (u8 * s, vxlan_gpe_ioam_option_t * opt);
+
+  /* API message ID base */
+  u16 msg_id_base;
+
+  /* Override to export for iOAM */
+  uword decap_v4_next_override;
+  uword decap_v6_next_override;
+
+  /* sequence of node graph for encap */
+  uword encap_v4_next_node;
+  uword encap_v6_next_node;
+
+  /** State convenience vlib_main_t */
+  vlib_main_t *vlib_main;
+  /** State convenience vnet_main_t */
+  vnet_main_t *vnet_main;
+
+
+} vxlan_gpe_ioam_main_t;
+extern vxlan_gpe_ioam_main_t vxlan_gpe_ioam_main;
+
+/*
+ * Primary h-b-h handler trace support
+ */
+typedef struct
+{
+  u32 next_index;
+  u32 trace_len;
+  u8 option_data[256];
+} ioam_trace_t;
+
+
+vlib_node_registration_t vxlan_gpe_encap_ioam_v4_node;
+vlib_node_registration_t vxlan_gpe_decap_ioam_v4_node;
+
+clib_error_t *vxlan_gpe_ioam_enable (int has_trace_option, int has_pot_option,
+				     int has_ppc_option);
+
+clib_error_t *vxlan_gpe_ioam_disable (int has_trace_option,
+				      int has_pot_option, int has_ppc_option);
+
+clib_error_t *vxlan_gpe_ioam_set (vxlan_gpe_tunnel_t * t,
+				  int has_trace_option,
+				  int has_pot_option,
+				  int has_ppc_option, u8 ipv6_set);
+clib_error_t *vxlan_gpe_ioam_clear (vxlan_gpe_tunnel_t * t,
+				    int has_trace_option, int has_pot_option,
+				    int has_ppc_option, u8 ipv6_set);
+
+int vxlan_gpe_ioam_add_register_option (u8 option,
+					u8 size,
+					int rewrite_options (u8 *
+							     rewrite_string,
+							     u8 *
+							     rewrite_size));
+
+int vxlan_gpe_add_unregister_option (u8 option);
+
+int vxlan_gpe_ioam_register_option (u8 option,
+				    int options (vlib_buffer_t * b,
+						 vxlan_gpe_ioam_option_t *
+						 opt, u8 is_ipv4, u8 use_adj),
+				    u8 * trace (u8 * s,
+						vxlan_gpe_ioam_option_t *
+						opt));
+int vxlan_gpe_ioam_unregister_option (u8 option);
+
+int vxlan_gpe_trace_profile_setup (void);
+
+int vxlan_gpe_trace_profile_cleanup (void);
+
+typedef enum
+{
+  VXLAN_GPE_DECAP_IOAM_V4_NEXT_POP,
+  VXLAN_GPE_DECAP_IOAM_V4_NEXT_DROP,
+  VXLAN_GPE_DECAP_IOAM_V4_N_NEXT
+} vxlan_gpe_decap_ioam_v4_next_t;
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */