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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.
*/
#ifndef included_vnet_lisp_gpe_h
#define included_vnet_lisp_gpe_h
#include <vppinfra/error.h>
#include <vppinfra/mhash.h>
#include <vnet/vnet.h>
#include <vnet/ip/ip.h>
#include <vnet/l2/l2_input.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/udp.h>
#include <vnet/lisp-cp/lisp_types.h>
#include <vnet/lisp-gpe/lisp_gpe_packet.h>
#define IP_UDP_HDR_LEN (word) (sizeof(udp_header_t) + sizeof(ip4_header_t))
typedef CLIB_PACKED (struct {
ip4_header_t ip4; /* 20 bytes */
udp_header_t udp; /* 8 bytes */
lisp_gpe_header_t lisp; /* 8 bytes */
}) ip4_udp_lisp_gpe_header_t;
typedef struct
{
union
{
struct
{
gid_address_t eid;
u32 dst_loc;
u32 iid;
};
u8 as_u8[6];
};
} lisp_gpe_tunnel_key_t;
typedef struct
{
/* Rewrite string. $$$$ embed vnet_rewrite header */
u8 * rewrite;
/* decap next index */
u32 decap_next_index;
/* 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 */
/* vnet intfc hw/sw_if_index */
u32 hw_if_index;
u32 sw_if_index;
/* LISP header fields in HOST byte order */
u8 flags;
u8 ver_res;
u8 res;
u8 next_protocol;
u32 vni;
} lisp_gpe_tunnel_t;
#define foreach_lisp_gpe_input_next \
_(DROP, "error-drop") \
_(IP4_INPUT, "ip4-input") \
_(IP6_INPUT, "ip6-input") \
_(ETHERNET_INPUT, "ethernet-input")
typedef enum {
#define _(s,n) LISP_GPE_INPUT_NEXT_##s,
foreach_lisp_gpe_input_next
#undef _
LISP_GPE_INPUT_N_NEXT,
} lisp_gpe_input_next_t;
typedef enum {
#define lisp_gpe_error(n,s) LISP_GPE_ERROR_##n,
#include <vnet/lisp-gpe/lisp_gpe_error.def>
#undef lisp_gpe_error
LISP_GPE_N_ERROR,
} lisp_gpe_error_t;
/* As a first step, reuse v4 fib. The goal of the typedef is to shield
* consumers from future updates that may result in the lisp ip4 fib diverging
* from ip4 fib */
typedef ip4_fib_t lisp_ip4_fib_t;
typedef struct lisp_gpe_main
{
/* Pool of src fibs that are paired with dst fibs */
ip4_fib_t * src_fibs;
/* vector of encap tunnel instances */
lisp_gpe_tunnel_t * tunnels;
/* lookup tunnel by key */
mhash_t lisp_gpe_tunnel_by_key;
/* lookup decap tunnel termination sw_if_index by vni and vice versa */
uword * tunnel_term_sw_if_index_by_vni;
uword * vni_by_tunnel_term_sw_if_index;
/* Free vlib hw_if_indices */
u32 * free_lisp_gpe_tunnel_hw_if_indices;
/* Lookup lisp-gpe interfaces by vrf */
uword * lisp_gpe_hw_if_index_by_table_id;
/* Lookup lgpe_ip4_lookup_next by vrf */
uword * lgpe_ip4_lookup_next_index_by_table_id;
/* next node indexes that points ip4 lookup to lisp gpe lookup and lisp cp */
u32 ip4_lookup_next_lgpe_ip4_lookup;
/* convenience */
vlib_main_t * vlib_main;
vnet_main_t * vnet_main;
ip_lookup_main_t * lookup_main;
ip4_main_t * im4;
} lisp_gpe_main_t;
lisp_gpe_main_t lisp_gpe_main;
extern vlib_node_registration_t lgpe_ip4_lookup_node;
extern vlib_node_registration_t lisp_gpe_input_node;
u8 *
format_lisp_gpe_tx_trace (u8 * s, va_list * args);
u8 *
format_lisp_gpe_header_with_length (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 flags;
u8 ver_res;
u8 res;
u8 next_protocol;
u32 vni; /* host byte order */
} vnet_lisp_gpe_add_del_tunnel_args_t;
int
vnet_lisp_gpe_add_del_tunnel (vnet_lisp_gpe_add_del_tunnel_args_t *a,
u32 * sw_if_indexp);
typedef struct
{
u8 is_add;
u32 table_id; /* vrf */
u32 vni; /* host byte order */
} vnet_lisp_gpe_add_del_iface_args_t;
void
vnet_lisp_gpe_add_del_iface (vnet_lisp_gpe_add_del_iface_args_t *a,
u32 * hw_if_indexp);
typedef struct
{
u8 is_en;
} vnet_lisp_gpe_enable_disable_args_t;
clib_error_t *
vnet_lisp_gpe_enable_disable (vnet_lisp_gpe_enable_disable_args_t *a);
typedef enum
{
NO_ACTION,
FORWARD_NATIVE,
SEND_MAP_REQUEST,
DROP
} negative_fwd_actions_e;
typedef struct
{
u8 is_add;
u8 is_negative;
negative_fwd_actions_e action;
gid_address_t seid; /* TODO convert to ip4, ip6, mac ? */
gid_address_t deid;
ip_address_t slocator;
ip_address_t dlocator;
u32 encap_fib_index;
u32 decap_fib_index;
u32 decap_next_index;
u8 flags;
u8 ver_res;
u8 res;
u8 next_protocol;
u32 vni; /* host byte order */
u32 table_id;
} vnet_lisp_gpe_add_del_fwd_entry_args_t;
int
vnet_lisp_gpe_add_del_fwd_entry (vnet_lisp_gpe_add_del_fwd_entry_args_t *a,
u32 * hw_if_indexp);
u8 *
format_lisp_gpe_header_with_length (u8 * s, va_list * args);
#endif /* included_vnet_lisp_gpe_h */
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