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Diffstat (limited to 'src/vnet/mpls/mpls.h')
| -rw-r--r-- | src/vnet/mpls/mpls.h | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/src/vnet/mpls/mpls.h b/src/vnet/mpls/mpls.h new file mode 100644 index 00000000000..b6fdbce7d70 --- /dev/null +++ b/src/vnet/mpls/mpls.h @@ -0,0 +1,172 @@ +/* + * 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; + +#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; + + /* Feature arc indices */ + u8 input_feature_arc_index; + u8 output_feature_arc_index; + + /* 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; + +extern clib_error_t * mpls_feature_init(vlib_main_t * vm); + +format_function_t format_mpls_protocol; +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); + +int mpls_fib_reset_labels (u32 fib_id); + +#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 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 */ |