vpp - Vector Packet Processing

Age	Commit message (Expand)	Author	Files	Lines
2017-03-30	VPP-669: ping: fix coverity check error 165075 + add ping testcase	Andrew Yourtchenko	1	-0/+118

/* * 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. */ /** * @file * @brief Segment Routing data structures definitions * */ #ifndef included_vnet_srv6_h #define included_vnet_srv6_h #include <vnet/vnet.h> #include <vnet/srv6/sr_packet.h> #include <vnet/ip/ip6_packet.h> #include <vnet/ethernet/ethernet.h> #include <stdlib.h> #include <string.h> #define IPv6_DEFAULT_HEADER_LENGTH 40 #define IPv6_DEFAULT_HOP_LIMIT 64 #define IPv6_DEFAULT_MAX_MASK_WIDTH 128 #define SR_BEHAVIOR_END 1 #define SR_BEHAVIOR_X 2 #define SR_BEHAVIOR_T 3 #define SR_BEHAVIOR_D_FIRST 4 /* Unused. Separator in between regular and D */ #define SR_BEHAVIOR_DX2 5 #define SR_BEHAVIOR_DX6 6 #define SR_BEHAVIOR_DX4 7 #define SR_BEHAVIOR_DT6 8 #define SR_BEHAVIOR_DT4 9 #define SR_BEHAVIOR_END_UN_PERF 10 #define SR_BEHAVIOR_END_UN 11 #define SR_BEHAVIOR_LAST 12 /* Must always be the last one */ #define SR_STEER_L2 2 #define SR_STEER_IPV4 4 #define SR_STEER_IPV6 6 #define SR_FUNCTION_SIZE 4 #define SR_ARGUMENT_SIZE 4 #define SR_SEGMENT_LIST_WEIGHT_DEFAULT 1 /* *INDENT-OFF* */ typedef struct { ip6_header_t ip; ip6_sr_header_t sr; } __attribute__ ((packed)) ip6srv_combo_header_t; /* *INDENT-ON* */ /** * @brief SR Segment List (SID list) */ typedef struct { ip6_address_t *segments; /**< SIDs (key) */ u32 weight; /**< SID list weight (wECMP / UCMP) */ u8 *rewrite; /**< Precomputed rewrite header */ u8 *rewrite_bsid; /**< Precomputed rewrite header for bindingSID */ dpo_id_t bsid_dpo; /**< DPO for Encaps/Insert for BSID */ dpo_id_t ip6_dpo; /**< DPO for Encaps/Insert IPv6 */ dpo_id_t ip4_dpo; /**< DPO for Encaps IPv6 */ u16 plugin; void *plugin_mem; } ip6_sr_sl_t; /* SR policy types */ #define SR_POLICY_TYPE_DEFAULT 0 #define SR_POLICY_TYPE_SPRAY 1 /** * @brief SR Policy */ typedef struct { u32 *segments_lists; /**< SID lists indexes (vector) */ ip6_address_t bsid; /**< BindingSID (key) */ u8 type; /**< Type (default is 0) */ /* SR Policy specific DPO */ /* IF Type = DEFAULT Then Load Balancer DPO among SID lists */ /* IF Type = SPRAY then Spray DPO with all SID lists */ dpo_id_t bsid_dpo; /**< SR Policy specific DPO - BSID */ dpo_id_t ip4_dpo; /**< SR Policy specific DPO - IPv6 */ dpo_id_t ip6_dpo; /**< SR Policy specific DPO - IPv4 */ u32 fib_table; /**< FIB table */ u8 is_encap; /**< Mode (0 is SRH insert, 1 Encaps) */ u16 plugin; void *plugin_mem; } ip6_sr_policy_t; typedef int (sr_p_plugin_callback_t) (ip6_sr_policy_t * sr); /** * @brief SR LocalSID */ typedef struct { ip6_address_t localsid; /**< LocalSID IPv6 address */ u16 localsid_prefix_len; char end_psp; /**< Combined with End.PSP? */ u16 behavior; /**< Behavior associated to this localsid */ union { u32 sw_if_index; /**< xconnect only */ u32 vrf_index; /**< vrf only */ }; u32 fib_table; /**< FIB table where localsid is registered */ u32 vlan_index; /**< VLAN tag (not an index) */ ip46_address_t next_hop; /**< Next_hop for xconnect usage only */ u32 nh_adj; /**< Next_adj for xconnect usage only */ ip6_address_t usid_block; ip6_address_t usid_block_mask; u8 usid_index; u8 usid_len; u8 usid_next_index; u8 usid_next_len; void *plugin_mem; /**< Memory to be used by the plugin callback functions */ } ip6_sr_localsid_t; typedef int (sr_plugin_callback_t) (ip6_sr_localsid_t * localsid); /** * @brief SR LocalSID behavior registration */ typedef struct { u16 sr_localsid_function_number; /**< SR LocalSID plugin function (>SR_BEHAVIOR_LAST) */ u8 *function_name; /**< Function name. (key). */ u8 *keyword_str; /**< Behavior keyword (i.e. End.X) */ u8 *def_str; /**< Behavior definition (i.e. Endpoint with cross-connect) */ u8 *params_str; /**< Behavior parameters (i.e. <oif> <IP46next_hop>) */ u8 prefix_length; dpo_type_t dpo; /**< DPO type registration */ format_function_t *ls_format; /**< LocalSID format function */ unformat_function_t *ls_unformat; /**< LocalSID unformat function */ sr_plugin_callback_t *creation; /**< Function within plugin that will be called after localsid creation*/ sr_plugin_callback_t *removal; /**< Function within plugin that will be called before localsid removal */ } sr_localsid_fn_registration_t; /** * @brief SR Policy behavior registration */ typedef struct { u16 sr_policy_function_number; /**< SR Policy plugin function */ u8 *function_name; /**< Function name. (key). */ u8 *keyword_str; /**< Behavior keyword (i.e. End.X) */ u8 *def_str; /**< Behavior definition (i.e. Endpoint with cross-connect) */ u8 *params_str; /**< Behavior parameters (i.e. <oif> <IP46next_hop>) */ u8 prefix_length; dpo_type_t dpo; /**< DPO type registration */ format_function_t *ls_format; /**< LocalSID format function */ unformat_function_t *ls_unformat; /**< LocalSID unformat function */ sr_p_plugin_callback_t *creation; /**< Function within plugin that will be called after localsid creation*/ sr_p_plugin_callback_t *removal; /**< Function within plugin that will be called before localsid removal */ } sr_policy_fn_registration_t; /** * @brief Steering db key * * L3 is IPv4/IPv6 + mask * L2 is sf_if_index + vlan */ typedef struct { union { struct { ip46_address_t prefix; /**< IP address of the prefix */ u32 mask_width; /**< Mask width of the prefix */ u32 fib_table; /**< VRF of the prefix */ } l3; struct { u32 sw_if_index; /**< Incoming software interface */ } l2; }; u8 traffic_type; /**< Traffic type (IPv4, IPv6, L2) */ u8 padding[3]; } sr_steering_key_t; typedef struct { sr_steering_key_t classify; /**< Traffic classification */ u32 sr_policy; /**< SR Policy index */ } ip6_sr_steering_policy_t; typedef struct { ip6_address_t address; u16 pref_len; u8 padding[2]; } sr_localsid_key_t; /** * @brief Segment Routing main datastructure */ typedef struct { /* L2-input -> SR rewrite next index */ u32 l2_sr_policy_rewrite_index; /* SR SID lists */ ip6_sr_sl_t *sid_lists; /* SRv6 policies */ ip6_sr_policy_t *sr_policies; /* Hash table mapping BindingSID to SRv6 policy */ mhash_t sr_policies_index_hash; /* Pool of SR localsid instances */ ip6_sr_localsid_t *localsids; /* Hash table mapping LOC:FUNC to SR LocalSID instance */ mhash_t sr_localsids_index_hash; /* Pool of SR steer policies instances */ ip6_sr_steering_policy_t *steer_policies; /* Hash table mapping steering rules to SR steer instance */ mhash_t sr_steer_policies_hash; /* L2 steering ifaces - sr_policies */ u32 *sw_iface_sr_policies; /* Spray DPO */ dpo_type_t sr_pr_spray_dpo_type; /* Plugin functions */ sr_localsid_fn_registration_t *plugin_functions; /* Find plugin function by name */ uword *plugin_functions_by_key; /* Plugin functions for Policy */ sr_policy_fn_registration_t *policy_plugin_functions; /* Find plugin function by name */ uword *policy_plugin_functions_by_key; /* Counters */ vlib_combined_counter_main_t sr_ls_valid_counters; vlib_combined_counter_main_t sr_ls_invalid_counters; /* SR Policies FIBs */ u32 fib_table_ip6; u32 fib_table_ip4; /* convenience */ vlib_main_t *vlib_main; vnet_main_t *vnet_main; } ip6_sr_main_t; extern ip6_sr_main_t sr_main; extern vlib_node_registration_t sr_policy_rewrite_encaps_node; extern vlib_node_registration_t sr_policy_rewrite_insert_node; extern vlib_node_registration_t sr_localsid_node; extern vlib_node_registration_t sr_localsid_d_node; extern void sr_dpo_lock (dpo_id_t * dpo); extern void sr_dpo_unlock (dpo_id_t * dpo); extern int sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name, u8 * keyword_str, u8 * def_str, u8 * params_str, u8 prefix_length, dpo_type_t * dpo, format_function_t * ls_format, unformat_function_t * ls_unformat, sr_plugin_callback_t * creation_fn, sr_plugin_callback_t * removal_fn); extern int sr_policy_register_function (vlib_main_t * vm, u8 * fn_name, u8 * keyword_str, u8 * def_str, u8 * params_str, u8 prefix_length, dpo_type_t * dpo, format_function_t * ls_format, unformat_function_t * ls_unformat, sr_p_plugin_callback_t * creation_fn, sr_p_plugin_callback_t * removal_fn); extern int sr_policy_add (ip6_address_t * bsid, ip6_address_t * segments, u32 weight, u8 behavior, u32 fib_table, u8 is_encap, u16 plugin, void *plugin_mem); extern int sr_policy_mod (ip6_address_t * bsid, u32 index, u32 fib_table, u8 operation, ip6_address_t * segments, u32 sl_index, u32 weight); extern int sr_policy_del (ip6_address_t * bsid, u32 index); extern int sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, u16 localsid_prefix_len, char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, u32 fib_table, ip46_address_t * nh_addr, int usid_len, void *ls_plugin_mem); extern int sr_steering_policy (int is_del, ip6_address_t * bsid, u32 sr_policy_index, u32 table_id, ip46_address_t * prefix, u32 mask_width, u32 sw_if_index, u8 traffic_type); extern void sr_set_source (ip6_address_t * address); extern ip6_address_t *sr_get_encaps_source (); extern void sr_set_hop_limit (u8 hop_limit); extern u8 sr_get_hop_limit (void); /** * @brief SR rewrite string computation for SRH insertion (inline) * * @param sl is a vector of IPv6 addresses composing the Segment List * * @return precomputed rewrite string for SRH insertion */ static inline u8 * ip6_sr_compute_rewrite_string_insert (ip6_address_t * sl) { ip6_sr_header_t *srh; ip6_address_t *addrp, *this_address; u32 header_length = 0; u8 *rs = NULL; header_length = 0; header_length += sizeof (ip6_sr_header_t); header_length += (vec_len (sl) + 1) * sizeof (ip6_address_t); vec_validate (rs, header_length - 1); srh = (ip6_sr_header_t *) rs; srh->type = ROUTING_HEADER_TYPE_SR; srh->segments_left = vec_len (sl); srh->last_entry = vec_len (sl); srh->length = ((sizeof (ip6_sr_header_t) + ((vec_len (sl) + 1) * sizeof (ip6_address_t))) / 8) - 1; srh->flags = 0x00; srh->tag = 0x0000; addrp = srh->segments + vec_len (sl); vec_foreach (this_address, sl) { clib_memcpy_fast (addrp->as_u8, this_address->as_u8, sizeof (ip6_address_t)); addrp--; } return rs; } #endif /* included_vnet_sr_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */