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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_h
#define included_vnet_mpls_h
#include <vnet/vnet.h>
#include <vnet/mpls/packet.h>
#include <vnet/mpls/mpls_types.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/fib/fib_node.h>
#include <vnet/adj/adj.h>
typedef enum {
#define mpls_error(n,s) MPLS_ERROR_##n,
#include <vnet/mpls/error.def>
#undef mpls_error
MPLS_N_ERROR,
} mpls_error_t;
/*
* No protocol info, MPLS labels don't have a next-header field
* presumably the label field tells all...
*/
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;
fib_node_index_t fei;
} mpls_eth_tunnel_t;
typedef struct {
mpls_unicast_header_t *labels;
/* only for policy tunnels */
u8 * rewrite;
u32 output_next_index;
} mpls_encap_t;
#define MPLS_FIB_DEFAULT_TABLE_ID 0
/**
* Type exposure is to allow the DP fast/inlined access
*/
#define MPLS_FIB_KEY_SIZE 21
#define MPLS_FIB_DB_SIZE (1 << (MPLS_FIB_KEY_SIZE-1))
typedef struct mpls_fib_t_
{
/**
* A hash table of entries. 21 bit key
* Hash table for reduced memory footprint
*/
uword * mf_entries;
/**
* The load-balance indeices keyed by 21 bit label+eos bit.
* A flat array for maximum lookup performace.
*/
index_t mf_lbs[MPLS_FIB_DB_SIZE];
} mpls_fib_t;
/**
* @brief Definition of a callback for receiving MPLS interface state change
* notifications
*/
typedef void (*mpls_interface_state_change_callback_t)(u32 sw_if_index,
u32 is_enable);
typedef struct {
/* MPLS FIB index for each software interface */
u32 *fib_index_by_sw_if_index;
/** A pool of all the MPLS FIBs */
struct fib_table_t_ *fibs;
/** A hash table to lookup the mpls_fib by table ID */
uword *fib_index_by_table_id;
/* rx/tx interface/feature configuration. */
ip_config_main_t feature_config_mains[VNET_N_IP_FEAT];
/* Built-in unicast feature path indices, see vnet_feature_arc_init(...) */
u32 mpls_rx_feature_lookup;
u32 mpls_rx_feature_not_enabled;
u32 mpls_tx_feature_interface_output;
/* 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;
/* 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;
/* feature path configuration lists */
vnet_feature_registration_t * next_feature[VNET_N_IP_FEAT];
/* Save feature results for show command */
char **feature_nodes[VNET_N_IP_FEAT];
/* IP4 enabled count by software interface */
u8 * mpls_enabled_by_sw_if_index;
/* convenience */
vlib_main_t * vlib_main;
vnet_main_t * vnet_main;
} mpls_main_t;
extern mpls_main_t mpls_main;
#define VNET_MPLS_FEATURE_INIT(x,...) \
__VA_ARGS__ vnet_feature_registration_t uc_##x; \
static void __vnet_add_feature_registration_uc_##x (void) \
__attribute__((__constructor__)) ; \
static void __vnet_add_feature_registration_uc_##x (void) \
{ \
mpls_main_t * mm = &mpls_main; \
uc_##x.next = mm->next_feature[VNET_IP_RX_UNICAST_FEAT]; \
mm->next_feature[VNET_IP_RX_UNICAST_FEAT] = &uc_##x; \
} \
__VA_ARGS__ vnet_feature_registration_t uc_##x
#define VNET_MPLS_TX_FEATURE_INIT(x,...) \
__VA_ARGS__ vnet_feature_registration_t tx_##x; \
static void __vnet_add_feature_registration_tx_##x (void) \
__attribute__((__constructor__)) ; \
static void __vnet_add_feature_registration_tx_##x (void) \
{ \
mpls_main_t * mm = &mpls_main; \
tx_##x.next = mm->next_feature[VNET_IP_TX_FEAT]; \
mm->next_feature[VNET_IP_TX_FEAT] = &tx_##x; \
} \
__VA_ARGS__ vnet_feature_registration_t tx_##x
extern clib_error_t * mpls_feature_init(vlib_main_t * vm);
format_function_t format_mpls_protocol;
format_function_t format_mpls_eth_header_with_length;
format_function_t format_mpls_encap_index;
format_function_t format_mpls_eos_bit;
format_function_t format_mpls_unicast_header_net_byte_order;
format_function_t format_mpls_unicast_label;
format_function_t format_mpls_header;
extern vlib_node_registration_t mpls_input_node;
extern vlib_node_registration_t mpls_policy_encap_node;
extern vlib_node_registration_t mpls_output_node;
extern vlib_node_registration_t mpls_midchain_node;
/* 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_unicast_label;
/* Parse mpls header. */
unformat_function_t unformat_mpls_header;
unformat_function_t unformat_pg_mpls_header;
void mpls_sw_interface_enable_disable (mpls_main_t * mm,
u32 sw_if_index,
u8 is_enable);
u8 mpls_sw_interface_is_enabled (u32 sw_if_index);
mpls_encap_t *
mpls_encap_by_fib_and_dest (mpls_main_t * mm, u32 rx_fib, u32 dst_address);
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 mpls_fib_reset_labels (u32 fib_id);
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);
#define foreach_mpls_input_next \
_(DROP, "error-drop") \
_(LOOKUP, "mpls-lookup")
typedef enum {
#define _(s,n) MPLS_INPUT_NEXT_##s,
foreach_mpls_input_next
#undef _
MPLS_INPUT_N_NEXT,
} mpls_input_next_t;
#define foreach_mpls_lookup_next \
_(DROP, "error-drop") \
_(IP4_INPUT, "ip4-input") \
_(L2_OUTPUT, "l2-output")
// FIXME remove.
typedef enum {
#define _(s,n) MPLS_LOOKUP_NEXT_##s,
foreach_mpls_lookup_next
#undef _
MPLS_LOOKUP_N_NEXT,
} mpls_lookup_next_t;
#define foreach_mpls_output_next \
_(DROP, "error-drop")
typedef enum {
#define _(s,n) MPLS_OUTPUT_NEXT_##s,
foreach_mpls_output_next
#undef _
MPLS_OUTPUT_N_NEXT,
} mpls_output_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);
typedef struct {
u32 fib_index;
u32 entry_index;
u32 dest;
u32 s_bit;
u32 label;
} show_mpls_fib_t;
int
mpls_dest_cmp(void * a1, void * a2);
int
mpls_fib_index_cmp(void * a1, void * a2);
int
mpls_label_cmp(void * a1, void * a2);
#endif /* included_vnet_mpls_h */
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