1 files changed, 123 insertions, 0 deletions
diff --git a/vnet/vnet/nsh-gre/nsh_gre.h b/vnet/vnet/nsh-gre/nsh_gre.h
new file mode 100644
index 00000000000..c82c80f6a68
--- /dev/null
+++ b/vnet/vnet/nsh-gre/nsh_gre.h
@@ -0,0 +1,123 @@
+/*
+ * 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_vnet_nsh_gre_h
+#define included_vnet_nsh_gre_h
+
+#include <vnet/vnet.h>
+#include <vnet/gre/gre.h>
+#include <vnet/nsh-gre/nsh_gre_packet.h>
+#include <vnet/ip/ip4_packet.h>
+
+typedef CLIB_PACKED (struct {
+  ip4_header_t ip4;             /* 20 bytes */
+  gre_header_t gre;             /* 4 bytes */
+  nsh_header_t nsh;   		/* 28 bytes */
+}) ip4_gre_and_nsh_header_t;
+
+typedef struct {
+  /* Rewrite string. $$$$ embed vnet_rewrite header */
+  u8 * rewrite;
+
+  /* tunnel src and dst addresses */
+  ip4_address_t src;
+  ip4_address_t dst;
+
+  /* FIB indices */
+  u32 encap_fib_index;          /* tunnel partner lookup here */
+  u32 decap_fib_index;          /* inner IP lookup here */
+
+  /* when decapsulating, send pkts here */
+  u32 decap_next_index;
+
+  /* vnet intfc hw/sw_if_index */
+  u32 hw_if_index;
+  u32 sw_if_index;
+
+  /* NSH header fields in HOST byte order */
+  u8 ver_o_c;
+  u8 length;
+  u8 md_type;
+  u8 next_protocol;
+  u32 spi_si;
+    
+  /* Context headers, always present, in HOST byte order */
+  u32 c1, c2, c3, c4;
+  u32 * tlvs;
+} nsh_gre_tunnel_t;
+
+#define foreach_nsh_gre_input_next              \
+  _ (DROP, "error-drop")                        \
+  _ (IP4_INPUT, "ip4-input")                    \
+  _ (IP6_INPUT, "ip6-input")                    \
+  _ (ETHERNET_INPUT, "ethernet-input")
+
+typedef enum {
+#define _(s,n) NSH_INPUT_NEXT_##s,
+  foreach_nsh_gre_input_next
+#undef _
+  NSH_INPUT_N_NEXT,
+} nsh_gre_input_next_t;
+
+typedef enum {
+#define nsh_gre_error(n,s) NSH_GRE_ERROR_##n,
+#include <vnet/nsh-gre/nsh_gre_error.def>
+#undef nsh_gre_error
+  NSH_GRE_N_ERROR,
+} nsh_gre_input_error_t;
+
+typedef struct {
+  /* vector of encap tunnel instances */
+  nsh_gre_tunnel_t *tunnels;
+
+  /* lookup tunnel by tunnel partner src address */
+  uword * nsh_gre_tunnel_by_src_address;
+
+  /* Free vlib hw_if_indices */
+  u32 * free_nsh_gre_tunnel_hw_if_indices;
+
+  /* show device instance by real device instance */
+  u32 * dev_inst_by_real;
+
+  /* convenience */
+  vlib_main_t * vlib_main;
+  vnet_main_t * vnet_main;
+} nsh_gre_main_t;
+
+nsh_gre_main_t nsh_gre_main;
+
+vlib_node_registration_t nsh_gre_input_node;
+vlib_node_registration_t nsh_gre_encap_node;
+
+u8 * format_nsh_gre_encap_trace (u8 * s, va_list * args);
+
+typedef struct {
+  u8 is_add;
+  ip4_address_t src, dst;
+  u32 encap_fib_index;
+  u32 decap_fib_index;
+  u32 decap_next_index;
+  u8 ver_o_c;
+  u8 length;
+  u8 md_type;
+  u8 next_protocol;
+  u32 spi_si;
+  u32 c1, c2, c3, c4;
+  u32 * tlvs;
+} vnet_nsh_gre_add_del_tunnel_args_t;
+
+int vnet_nsh_gre_add_del_tunnel (vnet_nsh_gre_add_del_tunnel_args_t *a, 
+                                 u32 * sw_if_indexp);
+
+#endif /* included_vnet_nsh_gre_h */