/*
* 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 LISP-GPE definitions.
*/
#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>
#include <vnet/adj/adj_types.h>
/** IP4-UDP-LISP encap header */
/* *INDENT-OFF* */
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;
/* *INDENT-ON* */
/** IP6-UDP-LISP encap header */
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip6_header_t ip6; /* 40 bytes */
udp_header_t udp; /* 8 bytes */
lisp_gpe_header_t lisp; /* 8 bytes */
}) ip6_udp_lisp_gpe_header_t;
/* *INDENT-ON* */
#define foreach_lisp_gpe_ip_input_next \
_(DROP, "error-drop") \
_(IP4_INPUT, "ip4-input") \
_(IP6_INPUT, "ip6-input") \
_(L2_INPUT, "l2-input")
/** Enum of possible next nodes post LISP-GPE decap */
typedef enum
{
#define _(s,n) LISP_GPE_INPUT_NEXT_##s,
foreach_lisp_gpe_ip_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;
typedef struct tunnel_lookup
{
/** Lookup lisp-gpe interfaces by dp table (eg. vrf/bridge index) */
uword *hw_if_index_by_dp_table;
/** lookup decap tunnel termination sw_if_index by vni and vice versa */
uword *sw_if_index_by_vni;
// FIXME - Need this?
uword *vni_by_sw_if_index;
} tunnel_lookup_t;
/** LISP-GPE global state*/
typedef struct lisp_gpe_main
{
/**
* @brief DB of all forwarding entries. The Key is:{l-EID,r-EID,vni}
* where the EID encodes L2 or L3
*/
uword *lisp_gpe_fwd_entries;
/**
* @brief A Pool of all LISP forwarding entries
*/
struct lisp_gpe_fwd_entry_t_ *lisp_fwd_entry_pool;
/** Free vlib hw_if_indices */
u32 *free_tunnel_hw_if_indices;
u8 is_en;
/* L3 data structures
* ================== */
tunnel_lookup_t l3_ifaces;
/* L2 data structures
* ================== */
/** L2 LISP FIB */
BVT (clib_bihash) l2_fib;
tunnel_lookup_t l2_ifaces;
/** Load-balance for a miss in the table */
dpo_id_t l2_lb_cp_lkup;
/** convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
ip4_main_t *im4;
ip6_main_t *im6;
ip_lookup_main_t *lm4;
ip_lookup_main_t *lm6;
} lisp_gpe_main_t;
/** LISP-GPE global state*/
lisp_gpe_main_t lisp_gpe_main;
always_inline lisp_gpe_main_t *
vnet_lisp_gpe_get_main ()
{
return &lisp_gpe_main;
}
extern vlib_node_registration_t lisp_gpe_ip4_input_node;
extern vlib_node_registration_t lisp_gpe_ip6_input_node;
extern vnet_hw_interface_class_t lisp_gpe_hw_class;
u8 *format_lisp_gpe_header_with_length (u8 * s, va_list * args);
/** Read LISP-GPE status */
u8 vnet_lisp_gpe_enable_disable_status (void);
u32
lisp_gpe_l3_iface_find_or_create (lisp_gpe_main_t * lgm,
u32 overlay_table_id, u32 vni);
/** Add/del LISP-GPE interface. */
extern void lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
extern u32 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
extern void lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
extern u32 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id);
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;
/** type of mapping */
u8 is_negative;
/** action for negative mappings */
negative_fwd_actions_e action;
/** local eid */
gid_address_t lcl_eid;
/** remote eid */
gid_address_t rmt_eid;
/** vector of locator pairs */
locator_pair_t *locator_pairs;
/** FIB index to lookup remote locator at encap */
u32 encap_fib_index;
/** FIB index to lookup inner IP at decap */
u32 decap_fib_index;
/* TODO remove */
u32 decap_next_index;
/** VNI/tenant id in HOST byte order */
u32 vni;
/** vrf or bd where fwd entry should be inserted */
union
{
/** table (vrf) id */
u32 table_id;
/** bridge domain id */
u16 bd_id;
/** generic access */
u32 dp_table;
};
} vnet_lisp_gpe_add_del_fwd_entry_args_t;
typedef struct
{
u32 fwd_entry_index;
u32 dp_table;
u32 vni;
dp_address_t leid;
dp_address_t reid;
} lisp_api_gpe_fwd_entry_t;
#define foreach_lgpe_ip4_lookup_next \
_(DROP, "error-drop") \
_(LISP_CP_LOOKUP, "lisp-cp-lookup")
typedef enum lgpe_ip4_lookup_next
{
#define _(sym,str) LGPE_IP4_LOOKUP_NEXT_##sym,
foreach_lgpe_ip4_lookup_next
#undef _
LGPE_IP4_LOOKUP_N_NEXT,
} lgpe_ip4_lookup_next_t;
#define foreach_lgpe_ip6_lookup_next \
_(DROP, "error-drop") \
_(LISP_CP_LOOKUP, "lisp-cp-lookup")
typedef enum lgpe_ip6_lookup_next
{
#define _(sym,str) LGPE_IP6_LOOKUP_NEXT_##sym,
foreach_lgpe_ip6_lookup_next
#undef _
LGPE_IP6_LOOKUP_N_NEXT,
} lgpe_ip6_lookup_next_t;
u8 *format_vnet_lisp_gpe_status (u8 * s, va_list * args);
lisp_api_gpe_fwd_entry_t *vnet_lisp_gpe_fwd_entries_get_by_vni (u32 vni);
#endif /* included_vnet_lisp_gpe_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
