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/*
* 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 */
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