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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_mpls_gre_h
#define included_vnet_mpls_gre_h
#include <vnet/vnet.h>
#include <vnet/gre/gre.h>
#include <vnet/mpls-gre/packet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ethernet/ethernet.h>
typedef CLIB_PACKED (struct {
ip4_header_t ip4; /* 20 bytes */
gre_header_t gre; /* 4 bytes */
mpls_unicast_header_t labels[0]; /* 4 bytes each */
}) ip4_gre_and_mpls_header_t;
extern vnet_hw_interface_class_t mpls_gre_hw_interface_class;
typedef enum {
#define mpls_error(n,s) MPLS_ERROR_##n,
#include <vnet/mpls-gre/error.def>
#undef mpls_error
MPLS_N_ERROR,
} mpls_gre_error_t;
/*
* No protocol info, MPLS labels don't have a next-header field
* presumably the label field tells all...
*/
typedef struct {
ip4_address_t tunnel_src;
ip4_address_t tunnel_dst;
ip4_address_t intfc_address;
u32 mask_width;
u32 inner_fib_index;
u32 outer_fib_index;
u32 encap_index;
u32 hw_if_index; /* L2 x-connect capable tunnel intfc */
u8 * rewrite_data;
u8 l2_only;
} mpls_gre_tunnel_t;
typedef struct {
u8 tunnel_dst[6];
ip4_address_t intfc_address;
u32 tx_sw_if_index;
u32 inner_fib_index;
u32 mask_width;
u32 encap_index;
u32 hw_if_index;
u8 * rewrite_data;
u8 l2_only;
} mpls_eth_tunnel_t;
typedef struct {
mpls_unicast_header_t *labels;
/* only for policy tunnels */
u8 * rewrite;
u32 output_next_index;
} mpls_encap_t;
typedef struct {
u32 tx_fib_index;
u32 next_index; /* e.g. ip4/6-input, l2-input */
} mpls_decap_t;
typedef struct {
/* pool of gre tunnel instances */
mpls_gre_tunnel_t *gre_tunnels;
u32 * free_gre_sw_if_indices;
/* pool of ethernet tunnel instances */
mpls_eth_tunnel_t *eth_tunnels;
u32 * free_eth_sw_if_indices;
/* Encap side: map (fib, dst_address) to mpls label stack */
mpls_encap_t * encaps;
uword * mpls_encap_by_fib_and_dest;
/* Decap side: map rx label to FIB */
mpls_decap_t * decaps;
uword * mpls_decap_by_rx_fib_and_label;
/* mpls-o-e policy tunnel next index for ip4/ip6-classify */
u32 ip4_classify_mpls_policy_encap_next_index;
u32 ip6_classify_mpls_policy_encap_next_index;
/* convenience */
vlib_main_t * vlib_main;
vnet_main_t * vnet_main;
} mpls_main_t;
mpls_main_t mpls_main;
format_function_t format_mpls_protocol;
format_function_t format_mpls_header;
format_function_t format_mpls_header_with_length;
format_function_t format_mpls_gre_header_with_length;
format_function_t format_mpls_eth_header_with_length;
format_function_t format_mpls_unicast_label;
format_function_t format_mpls_encap_index;
extern vlib_node_registration_t mpls_input_node;
extern vlib_node_registration_t mpls_policy_encap_node;
extern vnet_device_class_t mpls_gre_device_class;
/* Parse mpls protocol as 0xXXXX or protocol name.
In either host or network byte order. */
unformat_function_t unformat_mpls_protocol_host_byte_order;
unformat_function_t unformat_mpls_protocol_net_byte_order;
unformat_function_t unformat_mpls_label_net_byte_order;
unformat_function_t unformat_mpls_gre_header;
unformat_function_t unformat_pg_mpls_gre_header;
/* Parse mpls header. */
unformat_function_t unformat_mpls_header;
unformat_function_t unformat_pg_mpls_header;
/* manually added to the interface output node in mpls.c */
#define MPLS_GRE_OUTPUT_NEXT_LOOKUP 1
#define MPLS_GRE_OUTPUT_NEXT_DROP VNET_INTERFACE_TX_NEXT_DROP
mpls_encap_t *
mpls_encap_by_fib_and_dest (mpls_main_t * mm, u32 rx_fib, u32 dst_address);
int mpls_label_from_fib_id_and_dest (mpls_main_t *gm, u32 fib_id,
u32 dst_address, u32 *labelp);
int vnet_mpls_gre_add_del_tunnel (ip4_address_t *src,
ip4_address_t *dst,
ip4_address_t *intfc,
u32 mask_width,
u32 inner_fib_id, u32 outer_fib_id,
u32 * tunnel_intfc_sw_if_index,
u8 l2_only,
u8 is_add);
int vnet_mpls_ethernet_add_del_tunnel (u8 *dst,
ip4_address_t *intfc,
u32 mask_width,
u32 inner_fib_id,
u32 tx_sw_if_index,
u32 * tunnel_sw_if_index,
u8 l2_only,
u8 is_add);
int vnet_mpls_gre_delete_fib_tunnels (u32 fib_id);
int mpls_fib_reset_labels (u32 fib_id);
int vnet_mpls_add_del_decap (u32 rx_fib_id,
u32 tx_fib_id,
u32 label_host_byte_order,
int s_bit, int next_index, int is_add);
int vnet_mpls_add_del_encap (ip4_address_t *dest, u32 fib_id,
u32 *labels_host_byte_order,
u32 policy_tunnel_index,
int no_dst_hash, u32 * indexp, int is_add);
int vnet_mpls_policy_tunnel_add_rewrite (mpls_main_t * mm,
mpls_encap_t * e,
u32 policy_tunnel_index);
typedef struct {
u32 lookup_miss;
/* Tunnel-id / index in tunnel vector */
u32 tunnel_id;
/* mpls encap index */
u32 mpls_encap_index;
/* pkt length */
u32 length;
/* tunnel ip4 addresses */
ip4_address_t src;
ip4_address_t dst;
} mpls_gre_tx_trace_t;
u8 * format_mpls_gre_tx_trace (u8 * s, va_list * args);
u8 * format_mpls_gre_header (u8 * s, va_list * args);
#define foreach_mpls_input_next \
_(DROP, "error-drop") \
_(IP4_INPUT, "ip4-input") \
_(L2_OUTPUT, "l2-output")
typedef enum {
#define _(s,n) MPLS_INPUT_NEXT_##s,
foreach_mpls_input_next
#undef _
MPLS_INPUT_N_NEXT,
} mpls_input_next_t;
typedef struct {
u32 lookup_miss;
/* Tunnel-id / index in tunnel vector */
u32 tunnel_id;
/* output interface */
u32 tx_sw_if_index;
/* mpls encap index */
u32 mpls_encap_index;
/* pkt length */
u32 length;
u8 dst[6];
} mpls_eth_tx_trace_t;
u8 * format_mpls_eth_tx_trace (u8 * s, va_list * args);
#endif /* included_vnet_mpls_gre_h */
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