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/*
* Copyright (c) 2016 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.
*/
/**
* @file
* @brief L2-GRE over IPSec packet processing.
*/
#ifndef included_ipsec_gre_h
#define included_ipsec_gre_h
#include <vnet/vnet.h>
#include <vnet/gre/packet.h>
#include <vnet/gre/gre.h>
#include <vnet/ip/ip.h>
#include <vnet/ip/ip4.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/pg/pg.h>
#include <vnet/ip/format.h>
extern vnet_hw_interface_class_t ipsec_gre_hw_interface_class;
/**
* @brief IPSec-GRE errors.
*
*/
typedef enum
{
#define ipsec_gre_error(n,s) IPSEC_GRE_ERROR_##n,
#include <vnet/ipsec-gre/error.def>
#undef ipsec_gre_error
IPSEC_GRE_N_ERROR,
} ipsec_gre_error_t;
/**
* @brief IPSec-GRE tunnel parameters.
*
*/
typedef struct
{
/* Required for pool_get_aligned */
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
ip4_address_t tunnel_src; /**< tunnel IPv4 src address */
ip4_address_t tunnel_dst; /**< tunnel IPv4 dst address */
u32 local_sa; /**< local IPSec SA index */
u32 remote_sa; /**< remote IPSec SA index */
u32 local_sa_id; /**< local IPSec SA id */
u32 remote_sa_id; /**< remote IPSec SA id */
u32 hw_if_index;; /**< hardware interface index */
u32 sw_if_index;; /**< software interface index */
} ipsec_gre_tunnel_t;
/**
* @brief IPSec-GRE state.
*
*/
typedef struct
{
ipsec_gre_tunnel_t *tunnels; /**< pool of tunnel instances */
uword *tunnel_by_key; /**< hash mapping src/dst addr pair to tunnel */
u32 *free_ipsec_gre_tunnel_hw_if_indices; /**< free vlib hw_if_indices */
u32 *tunnel_index_by_sw_if_index; /**< mapping from sw_if_index to tunnel
index */
vlib_main_t *vlib_main; /**< convenience */
vnet_main_t *vnet_main; /**< convenience */
} ipsec_gre_main_t;
extern ipsec_gre_main_t ipsec_gre_main;
extern vlib_node_registration_t ipsec_gre_input_node;
extern vnet_device_class_t ipsec_gre_device_class;
/* manually added to the interface output node in ipsec_gre.c */
#define IPSEC_GRE_OUTPUT_NEXT_ESP_ENCRYPT 1
/**
* @brief IPSec-GRE tunnel add/del arguments.
*
*/
typedef struct
{
u8 is_add; /**< 1 - add, 0 - delete */
ip4_address_t src; /**< tunnel IPv4 src address */
ip4_address_t dst; /**< tunnel IPv4 dst address */
u32 lsa; /**< local IPSec SA id */
u32 rsa; /**< remote IPSec SA id */
} vnet_ipsec_gre_add_del_tunnel_args_t;
int vnet_ipsec_gre_add_del_tunnel
(vnet_ipsec_gre_add_del_tunnel_args_t * a, u32 * sw_if_indexp);
#endif /* included_ipsec_gre_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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