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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>
/* encap headers */
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 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;
typedef struct
{
union
{
struct
{
/* within the dp only ip and mac can be eids */
union
{
ip_prefix_t rmt_ippref;
u8 rmt_mac[6];
};
ip_address_t rmt_loc;
u32 vni;
};
u8 as_u8[40];
};
} 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 */
ip_address_t src;
ip_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;
/* action for 'negative' tunnels */
u8 action;
/* 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_ip_input_next \
_(DROP, "error-drop") \
_(IP4_INPUT, "ip4-input") \
_(IP6_INPUT, "ip6-input") \
_(L2_INPUT, "l2-input")
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;
/* 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 ip4_src_fib_t;
typedef struct ip6_src_fib
{
BVT(clib_bihash) ip6_lookup_table;
/* bitmap/vector of mask widths to search */
uword * non_empty_dst_address_length_bitmap;
u8 * prefix_lengths_in_search_order;
ip6_address_t fib_masks[129];
i32 dst_address_length_refcounts[129];
/* ip6 lookup table config parameters */
u32 lookup_table_nbuckets;
uword lookup_table_size;
} ip6_src_fib_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;
uword * vni_by_sw_if_index;
} tunnel_lookup_t;
typedef struct lisp_gpe_main
{
/* pool of encap tunnel instances */
lisp_gpe_tunnel_t * tunnels;
/* lookup tunnel by key */
mhash_t lisp_gpe_tunnel_by_key;
/* Free vlib hw_if_indices */
u32 * free_tunnel_hw_if_indices;
u8 is_en;
/* L3 data structures
* ================== */
/* Pool of src fibs that are paired with dst fibs */
ip4_src_fib_t * ip4_src_fibs;
ip6_src_fib_t * ip6_src_fibs;
tunnel_lookup_t l3_ifaces;
/* Lookup lgpe_ipX_lookup_next by vrf */
uword * lgpe_ip4_lookup_next_index_by_table_id;
uword * lgpe_ip6_lookup_next_index_by_table_id;
/* next node indexes that point ip4/6 lookup to lisp gpe ip lookup */
u32 ip4_lookup_next_lgpe_ip4_lookup;
u32 ip6_lookup_next_lgpe_ip6_lookup;
/* L2 data structures
* ================== */
/* l2 lisp fib */
BVT(clib_bihash) l2_fib;
tunnel_lookup_t l2_ifaces;
/* 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_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 lgpe_ip4_lookup_node;
extern vlib_node_registration_t lgpe_ip6_lookup_node;
extern vlib_node_registration_t lisp_gpe_ip4_input_node;
extern vlib_node_registration_t lisp_gpe_ip6_input_node;
u8 *
format_lisp_gpe_header_with_length (u8 * s, va_list * args);
typedef struct
{
u8 is_add;
union
{
/* vrf */
u32 table_id;
/* bridge domain */
u16 bd_id;
/* generic access */
u32 dp_table;
};
u8 is_l2;
u32 vni; /* host byte order */
} vnet_lisp_gpe_add_del_iface_args_t;
u8
vnet_lisp_gpe_enable_disable_status(void);
int
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 struct
{
u8 is_add;
/* type of mapping */
u8 is_negative;
u8 action;
/* local and remote eids */
gid_address_t lcl_eid;
gid_address_t rmt_eid;
/* local and remote locators (underlay attachment points) */
ip_address_t lcl_loc;
ip_address_t rmt_loc;
/* FIB indices to lookup remote locator at encap and inner IP at decap */
u32 encap_fib_index;
u32 decap_fib_index;
u32 decap_next_index; /* TODO is this really needed? */
/* VNI/tenant id in HOST byte order */
u32 vni;
/* vrf or bd where fwd entry should be inserted */
union
{
u32 table_id;
u16 bd_id;
/* generic access */
u32 dp_table;
};
} 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);
int
ip_sd_fib_add_del_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
ip_prefix_t * src_prefix, u32 table_id,
ip_adjacency_t * add_adj, u8 is_add);
u32
ip_sd_fib_get_route (lisp_gpe_main_t * lgm, ip_prefix_t * dst_prefix,
ip_prefix_t * src_prefix, u32 table_id);
#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);
#define L2_FIB_DEFAULT_HASH_NUM_BUCKETS (64 * 1024)
#define L2_FIB_DEFAULT_HASH_MEMORY_SIZE (32<<20)
u32
lisp_l2_fib_lookup (lisp_gpe_main_t * lgm, u16 bd_index, u8 src_mac[8],
u8 dst_mac[8]);
#endif /* included_vnet_lisp_gpe_h */
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