/* * 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 #include #include #include #include #include #include typedef enum { #define mpls_error(n,s) MPLS_ERROR_##n, #include #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 */