X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat.h;h=9b11736f5aca652bb90e6c56713d7c96086d7bf8;hb=b227aa699;hp=7a4d020dcde7d5461abedae18be00b18be227766;hpb=a3a830484fa6b6487f7f3d991a52cb6b090a8be8;p=vpp.git diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h index 7a4d020dcde..9b11736f5ac 100644 --- a/src/plugins/nat/nat.h +++ b/src/plugins/nat/nat.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016 Cisco and/or its affiliates. + * Copyright (c) 2020 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: @@ -48,12 +48,49 @@ /* NAT buffer flags */ #define SNAT_FLAG_HAIRPINNING (1 << 0) +/* NAT44 API Configuration flags */ +#define foreach_nat44_config_flag \ + _(0x00, IS_ENDPOINT_INDEPENDENT) \ + _(0x01, IS_ENDPOINT_DEPENDENT) \ + _(0x02, IS_STATIC_MAPPING_ONLY) \ + _(0x04, IS_CONNECTION_TRACKING) \ + _(0x08, IS_OUT2IN_DPO) + +typedef enum nat44_config_flags_t_ +{ +#define _(n,f) NAT44_API_##f = n, + foreach_nat44_config_flag +#undef _ +} nat44_config_flags_t; + +typedef struct +{ + /* nat44 plugin features */ + u8 static_mapping_only; + u8 connection_tracking; + u8 endpoint_dependent; + u8 out2in_dpo; + + u32 inside_vrf; + u32 outside_vrf; + + /* maximum number of users */ + u32 users; + + /* maximum number of sessions */ + u32 sessions; + + /* maximum number of ssessions per user */ + u32 user_sessions; +} nat44_config_t; + typedef enum { NAT_NEXT_DROP, NAT_NEXT_ICMP_ERROR, NAT_NEXT_IN2OUT_ED_FAST_PATH, NAT_NEXT_IN2OUT_ED_SLOW_PATH, + NAT_NEXT_IN2OUT_ED_OUTPUT_FAST_PATH, NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH, NAT_NEXT_OUT2IN_ED_FAST_PATH, NAT_NEXT_OUT2IN_ED_SLOW_PATH, @@ -68,36 +105,6 @@ typedef struct u32 arc_next_index; } nat_pre_trace_t; -/* session key (4-tuple) */ -typedef struct -{ - union - { - struct - { - ip4_address_t addr; - u16 port; - u16 protocol:3, fib_index:13; - }; - u64 as_u64; - }; -} snat_session_key_t; - -/* deterministic session outside key */ -typedef struct -{ - union - { - struct - { - ip4_address_t ext_host_addr; - u16 ext_host_port; - u16 out_port; - }; - u64 as_u64; - }; -} snat_det_out_key_t; - /* user (internal host) key */ typedef struct { @@ -112,24 +119,6 @@ typedef struct }; } snat_user_key_t; -/* NAT API Configuration flags */ -#define foreach_nat_config_flag \ - _(0x01, IS_TWICE_NAT) \ - _(0x02, IS_SELF_TWICE_NAT) \ - _(0x04, IS_OUT2IN_ONLY) \ - _(0x08, IS_ADDR_ONLY) \ - _(0x10, IS_OUTSIDE) \ - _(0x20, IS_INSIDE) \ - _(0x40, IS_STATIC) \ - _(0x80, IS_EXT_HOST_VALID) \ - -typedef enum nat_config_flags_t_ -{ -#define _(n,f) NAT_API_##f = n, - foreach_nat_config_flag -#undef _ -} nat_config_flags_t; - /* External address and port allocation modes */ #define foreach_nat_addr_and_port_alloc_alg \ _(0, DEFAULT, "default") \ @@ -165,22 +154,11 @@ typedef enum #define foreach_nat_in2out_ed_error \ _(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ -_(IN2OUT_PACKETS, "good in2out packets processed") \ _(OUT_OF_PORTS, "out of ports") \ _(BAD_ICMP_TYPE, "unsupported ICMP type") \ _(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ -_(MAX_USER_SESS_EXCEEDED, "max user sessions exceeded") \ -_(DROP_FRAGMENT, "drop fragment") \ -_(CANNOT_CREATE_USER, "cannot create NAT user") \ _(NON_SYN, "non-SYN packet try to create session") \ -_(TCP_PACKETS, "TCP packets") \ -_(TCP_CLOSED, "drops due to TCP in transitory timeout") \ -_(UDP_PACKETS, "UDP packets") \ -_(ICMP_PACKETS, "ICMP packets") \ -_(OTHER_PACKETS, "other protocol packets") \ -_(FRAGMENTS, "fragments") \ -_(CACHED_FRAGMENTS, "cached fragments") \ -_(PROCESSED_FRAGMENTS, "processed fragments") +_(TCP_CLOSED, "drops due to TCP in transitory timeout") typedef enum { @@ -192,23 +170,14 @@ typedef enum #define foreach_nat_out2in_ed_error \ _(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ -_(OUT2IN_PACKETS, "good out2in packets processed") \ _(OUT_OF_PORTS, "out of ports") \ _(BAD_ICMP_TYPE, "unsupported ICMP type") \ _(NO_TRANSLATION, "no translation") \ _(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ _(MAX_USER_SESS_EXCEEDED, "max user sessions exceeded") \ -_(DROP_FRAGMENT, "drop fragment") \ _(CANNOT_CREATE_USER, "cannot create NAT user") \ _(NON_SYN, "non-SYN packet try to create session") \ -_(TCP_PACKETS, "TCP packets") \ -_(TCP_CLOSED, "drops due to TCP in transitory timeout") \ -_(UDP_PACKETS, "UDP packets") \ -_(ICMP_PACKETS, "ICMP packets") \ -_(OTHER_PACKETS, "other protocol packets") \ -_(FRAGMENTS, "fragments") \ -_(CACHED_FRAGMENTS, "cached fragments") \ -_(PROCESSED_FRAGMENTS, "processed fragments") +_(TCP_CLOSED, "drops due to TCP in transitory timeout") typedef enum { @@ -237,25 +206,53 @@ typedef enum #define SNAT_SESSION_FLAG_FWD_BYPASS 32 #define SNAT_SESSION_FLAG_AFFINITY 64 #define SNAT_SESSION_FLAG_OUTPUT_FEATURE 128 +#define SNAT_SESSION_FLAG_EXACT_ADDRESS 256 /* NAT interface flags */ #define NAT_INTERFACE_FLAG_IS_INSIDE 1 #define NAT_INTERFACE_FLAG_IS_OUTSIDE 2 /* Static mapping flags */ -#define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY 1 -#define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY 2 -#define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT 4 -#define NAT_STATIC_MAPPING_FLAG_LB 8 +#define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY 1 +#define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY 2 +#define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT 4 +#define NAT_STATIC_MAPPING_FLAG_LB 8 +#define NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS 16 /* *INDENT-OFF* */ typedef CLIB_PACKED(struct { - /* Outside network key */ - snat_session_key_t out2in; + // number of sessions in this vrf + u32 ses_count; + + u32 rx_fib_index; + u32 tx_fib_index; + + // is this vrf expired + u8 expired; +}) per_vrf_sessions_t; +/* *INDENT-ON* */ - /* Inside network key */ - snat_session_key_t in2out; +/* *INDENT-OFF* */ +typedef CLIB_PACKED(struct +{ + /* Outside network tuple */ + struct + { + ip4_address_t addr; + u32 fib_index; + u16 port; + } out2in; + + /* Inside network tuple */ + struct + { + ip4_address_t addr; + u32 fib_index; + u16 port; + } in2out; + + nat_protocol_t nat_proto; /* Flags */ u32 flags; @@ -296,10 +293,13 @@ typedef CLIB_PACKED(struct /* user index */ u32 user_index; + + /* per vrf sessions index */ + u32 per_vrf_sessions_index; + }) snat_session_t; /* *INDENT-ON* */ - typedef struct { ip4_address_t addr; @@ -315,8 +315,8 @@ typedef struct u32 fib_index; /* *INDENT-OFF* */ #define _(N, i, n, s) \ - u16 busy_##n##_ports; \ - u16 * busy_##n##_ports_per_thread; \ + u32 busy_##n##_ports; \ + u32 * busy_##n##_ports_per_thread; \ u32 busy_##n##_port_refcounts[65535]; foreach_nat_protocol #undef _ @@ -326,38 +326,14 @@ typedef struct typedef struct { u32 fib_index; - u32 refcount; -} nat_outside_fib_t; - -typedef struct -{ - /* Inside network port */ - u16 in_port; - /* Outside network address and port */ - snat_det_out_key_t out; - /* Session state */ - u8 state; - /* Expire timeout */ - u32 expire; -} snat_det_session_t; + u32 ref_count; +} nat_fib_t; typedef struct { - /* inside IP address range */ - ip4_address_t in_addr; - u8 in_plen; - /* outside IP address range */ - ip4_address_t out_addr; - u8 out_plen; - /* inside IP addresses / outside IP addresses */ - u32 sharing_ratio; - /* number of ports available to internal host */ - u16 ports_per_host; - /* session counter */ - u32 ses_num; - /* vector of sessions */ - snat_det_session_t *sessions; -} snat_det_map_t; + u32 fib_index; + u32 refcount; +} nat_outside_fib_t; typedef struct { @@ -395,6 +371,8 @@ typedef enum typedef struct { + /* prefered pool address */ + ip4_address_t pool_addr; /* local IP address */ ip4_address_t local_addr; /* external IP address */ @@ -433,6 +411,7 @@ typedef struct typedef struct { ip4_address_t l_addr; + ip4_address_t pool_addr; u16 l_port; u16 e_port; u32 sw_if_index; @@ -444,6 +423,7 @@ typedef struct int is_add; int out2in_only; int identity_nat; + int exact; u8 *tag; } snat_static_map_resolve_t; @@ -454,7 +434,6 @@ typedef struct clib_bihash_8_8_t in2out; /* Endpoint dependent sessions lookup tables */ - clib_bihash_16_8_t out2in_ed; clib_bihash_16_8_t in2out_ed; /* Find-a-user => src address lookup */ @@ -483,6 +462,8 @@ typedef struct /* real thread index */ u32 thread_index; + per_vrf_sessions_t *per_vrf_sessions_vec; + } snat_main_per_thread_data_t; struct snat_main_s; @@ -492,10 +473,13 @@ typedef u32 (snat_icmp_match_function_t) (struct snat_main_s * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, - void *e); + ip4_header_t * ip0, + ip4_address_t * addr, + u16 * port, + u32 * fib_index, + nat_protocol_t * proto, + void *d, void *e, + u8 * dont_translate); /* Return worker thread index for given packet */ typedef u32 (snat_get_worker_in2out_function_t) (ip4_header_t * ip, @@ -512,10 +496,13 @@ typedef int (nat_alloc_out_addr_and_port_function_t) (snat_address_t * addresses, u32 fib_index, u32 thread_index, - snat_session_key_t * k, + nat_protocol_t proto, + ip4_address_t * addr, + u16 * port, u16 port_per_thread, u32 snat_thread_index); +#define foreach_nat_counter _ (tcp) _ (udp) _ (icmp) _ (other) _ (drops) typedef struct snat_main_s { @@ -530,7 +517,6 @@ typedef struct snat_main_s snat_get_worker_in2out_function_t *worker_in2out_cb; snat_get_worker_out2in_function_t *worker_out2in_cb; u16 port_per_thread; - u32 num_snat_thread; /* Per thread data */ snat_main_per_thread_data_t *per_thread_data; @@ -544,6 +530,9 @@ typedef struct snat_main_s /* Static mapping pool */ snat_static_mapping_t *static_mappings; + /* Endpoint-dependent out2in mappings */ + clib_bihash_16_8_t out2in_ed; + /* Interface pool */ snat_interface_t *interfaces; snat_interface_t *output_feature_interfaces; @@ -562,6 +551,9 @@ typedef struct snat_main_s u16 start_port; u16 end_port; + /* vector of fibs */ + nat_fib_t *fibs; + /* vector of outside fibs */ nat_outside_fib_t *outside_fibs; @@ -595,19 +587,25 @@ typedef struct snat_main_s u32 pre_out2in_node_index; u32 pre_in2out_node_index; + u32 out2in_node_index; u32 in2out_node_index; u32 in2out_output_node_index; + u32 in2out_fast_node_index; u32 in2out_slowpath_node_index; u32 in2out_slowpath_output_node_index; - u32 ed_in2out_node_index; - u32 ed_in2out_slowpath_node_index; - u32 out2in_node_index; u32 out2in_fast_node_index; + + u32 ei_out2in_node_index; + u32 ei_in2out_node_index; + u32 ei_in2out_output_node_index; + u32 ed_out2in_node_index; + u32 ed_in2out_node_index; + u32 ed_in2out_output_node_index; + + u32 ed_in2out_slowpath_node_index; u32 ed_out2in_slowpath_node_index; - u32 det_in2out_node_index; - u32 det_out2in_node_index; u32 hairpinning_node_index; u32 hairpin_dst_node_index; @@ -616,27 +614,28 @@ typedef struct snat_main_s u32 ed_hairpin_dst_node_index; u32 ed_hairpin_src_node_index; - - /* Deterministic NAT mappings */ - snat_det_map_t *det_maps; + nat44_config_t rconfig; + //nat44_config_t cconfig; /* If forwarding is enabled */ u8 forwarding_enabled; /* Config parameters */ + u8 endpoint_dependent; + + u8 out2in_dpo; + /* static mapping config */ u8 static_mapping_only; u8 static_mapping_connection_tracking; - u8 deterministic; - u8 out2in_dpo; - u8 endpoint_dependent; + + /* Is translation memory size calculated or user defined */ + u8 translation_memory_size_set; u32 translation_buckets; - uword translation_memory_size; - u32 max_translations; + u32 max_translations_per_thread; u32 *max_translations_per_fib; - + u32 max_users_per_thread; u32 user_buckets; - uword user_memory_size; u32 max_translations_per_user; u32 outside_vrf_id; @@ -645,7 +644,6 @@ typedef struct snat_main_s u32 inside_fib_index; /* values of various timeouts */ - // proto timeouts u32 udp_timeout; u32 tcp_transitory_timeout; u32 tcp_established_timeout; @@ -653,11 +651,64 @@ typedef struct snat_main_s /* TCP MSS clamping */ u16 mss_clamping; - u16 mss_value_net; - /* counters/gauges */ + /* counters */ vlib_simple_counter_main_t total_users; vlib_simple_counter_main_t total_sessions; + vlib_simple_counter_main_t user_limit_reached; + +#define _(x) vlib_simple_counter_main_t x; + struct + { + struct + { + struct + { + foreach_nat_counter; + } in2out; + + struct + { + foreach_nat_counter; + } out2in; + + struct + { + foreach_nat_counter; + } in2out_ed; + + struct + { + foreach_nat_counter; + } out2in_ed; + } fastpath; + + struct + { + struct + { + foreach_nat_counter; + } in2out; + + struct + { + foreach_nat_counter; + } out2in; + + struct + { + foreach_nat_counter; + } in2out_ed; + + struct + { + foreach_nat_counter; + } out2in_ed; + } slowpath; + + vlib_simple_counter_main_t hairpinning; + } counters; +#undef _ /* API message ID base */ u16 msg_id_base; @@ -668,10 +719,17 @@ typedef struct snat_main_s u8 log_level; /* convenience */ - vnet_main_t *vnet_main; + api_main_t *api_main; ip4_main_t *ip4_main; ip_lookup_main_t *ip4_lookup_main; - api_main_t *api_main; + + fib_source_t fib_src_hi; + fib_source_t fib_src_low; + + /* nat44 plugin enabled */ + u8 enabled; + + vnet_main_t *vnet_main; } snat_main_t; typedef struct @@ -699,8 +757,6 @@ extern vlib_node_registration_t snat_out2in_node; extern vlib_node_registration_t snat_in2out_worker_handoff_node; extern vlib_node_registration_t snat_in2out_output_worker_handoff_node; extern vlib_node_registration_t snat_out2in_worker_handoff_node; -extern vlib_node_registration_t snat_det_in2out_node; -extern vlib_node_registration_t snat_det_out2in_node; extern vlib_node_registration_t nat44_ed_in2out_node; extern vlib_node_registration_t nat44_ed_in2out_output_node; extern vlib_node_registration_t nat44_ed_out2in_node; @@ -713,7 +769,6 @@ format_function_t format_snat_user; format_function_t format_snat_static_mapping; format_function_t format_snat_static_map_to_resolve; format_function_t format_snat_session; -format_function_t format_det_map_ses; format_function_t format_snat_key; format_function_t format_static_mapping_key; format_function_t format_nat_protocol; @@ -763,6 +818,12 @@ unformat_function_t unformat_nat_protocol; */ #define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY) +/** \brief Check if exact pool address should be used. + @param s SNAT session + @return 1 if exact pool address or 0 +*/ +#define is_exact_address_session(s) (s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS) + /** \brief Check if NAT interface is inside. @param i NAT interface @return 1 if inside interface @@ -805,6 +866,12 @@ unformat_function_t unformat_nat_protocol; */ #define is_lb_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_LB) +/** \brief Check if exact pool address should be used. + @param s SNAT session + @return 1 if exact pool address or 0 +*/ +#define is_exact_address(s) (s->flags & NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS) + /** \brief Check if client initiating TCP connection (received SYN from client) @param t TCP header @return 1 if client initiating TCP connection @@ -1008,48 +1075,40 @@ do \ /* ICMP session match functions */ u32 icmp_match_in2out_fast (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); + ip4_header_t * ip0, ip4_address_t * addr, + u16 * port, u32 * fib_index, + nat_protocol_t * proto, void *d, void *e, + u8 * dont_translate); u32 icmp_match_in2out_slow (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); + ip4_header_t * ip0, ip4_address_t * addr, + u16 * port, u32 * fib_index, + nat_protocol_t * proto, void *d, void *e, + u8 * dont_translate); u32 icmp_match_out2in_fast (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); + ip4_header_t * ip0, ip4_address_t * addr, + u16 * port, u32 * fib_index, + nat_protocol_t * proto, void *d, void *e, + u8 * dont_translate); u32 icmp_match_out2in_slow (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); - -/* ICMP deterministic NAT session match functions */ -u32 icmp_match_out2in_det (snat_main_t * sm, vlib_node_runtime_t * node, - u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); -u32 icmp_match_in2out_det (snat_main_t * sm, vlib_node_runtime_t * node, - u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); + ip4_header_t * ip0, ip4_address_t * addr, + u16 * port, u32 * fib_index, + nat_protocol_t * proto, void *d, void *e, + u8 * dont_translate); /* ICMP endpoint-dependent session match functions */ u32 icmp_match_out2in_ed (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); + ip4_header_t * ip0, ip4_address_t * addr, + u16 * port, u32 * fib_index, nat_protocol_t * proto, + void *d, void *e, u8 * dont_translate); u32 icmp_match_in2out_ed (snat_main_t * sm, vlib_node_runtime_t * node, u32 thread_index, vlib_buffer_t * b0, - ip4_header_t * ip0, u8 * p_proto, - snat_session_key_t * p_value, - u8 * p_dont_translate, void *d, void *e); + ip4_header_t * ip0, ip4_address_t * addr, + u16 * port, u32 * fib_index, nat_protocol_t * proto, + void *d, void *e, u8 * dont_translate); u32 icmp_in2out (snat_main_t * sm, vlib_buffer_t * b0, ip4_header_t * ip0, icmp46_header_t * icmp0, u32 sw_if_index0, u32 rx_fib_index0, @@ -1069,9 +1128,11 @@ void nat_hairpinning_sm_unknown_proto (snat_main_t * sm, vlib_buffer_t * b, ip4_header_t * ip); void nat44_ed_hairpinning_unknown_proto (snat_main_t * sm, vlib_buffer_t * b, ip4_header_t * ip); -int snat_hairpinning (snat_main_t * sm, vlib_buffer_t * b0, +int snat_hairpinning (vlib_main_t * vm, vlib_node_runtime_t * node, + snat_main_t * sm, vlib_buffer_t * b0, ip4_header_t * ip0, udp_header_t * udp0, - tcp_header_t * tcp0, u32 proto0, int is_ed); + tcp_header_t * tcp0, u32 proto0, int is_ed, + int do_trace); /* Call back functions for clib_bihash_add_or_overwrite_stale */ int nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg); @@ -1079,6 +1140,23 @@ int nat44_o2i_ed_is_idle_session_cb (clib_bihash_kv_16_8_t * kv, void *arg); int nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg); int nat44_o2i_is_idle_session_cb (clib_bihash_kv_8_8_t * kv, void *arg); + +/** + * @brief Enable NAT44 plugin + * + * @param c nat44_config_t + * + * @return 0 on success, non-zero value otherwise + */ +int nat44_plugin_enable (nat44_config_t c); + +/** + * @brief Disable NAT44 plugin + * + * @return 0 on success, non-zero value otherwise + */ +int nat44_plugin_disable (); + /** * @brief Add external address to NAT44 pool * @@ -1131,6 +1209,8 @@ void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add); * @param out2in_only if 1 rule match only out2in direction * @param tag opaque string tag * @param identity_nat identity NAT + * @param pool_addr pool IPv4 address + * @param exact 1 = exact pool address * * @return 0 on success, non-zero value otherwise */ @@ -1139,7 +1219,8 @@ int snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, int addr_only, u32 sw_if_index, nat_protocol_t proto, int is_add, twice_nat_type_t twice_nat, u8 out2in_only, - u8 * tag, u8 identity_nat); + u8 * tag, u8 identity_nat, + ip4_address_t pool_addr, int exact); /** * @brief Add/delete static mapping with load-balancing (multiple backends) @@ -1167,7 +1248,7 @@ int nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port, nat_protocol_t proto, u32 vrf_id, u8 probability, u8 is_add); -clib_error_t *snat_api_init (vlib_main_t * vm, snat_main_t * sm); +clib_error_t *nat44_api_hookup (vlib_main_t * vm); /** * @brief Set NAT plugin workers @@ -1264,15 +1345,13 @@ void nat_free_session_data (snat_main_t * sm, snat_session_t * s, int nat44_set_session_limit (u32 session_limit, u32 vrf_id); /** - * @brief Free NAT44 ED session data (lookup keys, external address port) + * @brief Update NAT44 session limit flushing all data (session limit, vrf id) * - * @param s NAT session - * @param thread_index thread index - * @param is_ha is HA event + * @param session_limit Session limit + * @param vrf_id VRF id + * @return 0 on success, non-zero value otherwise */ -void -nat44_free_session_data (snat_main_t * sm, snat_session_t * s, - u32 thread_index, u8 is_ha); +int nat44_update_session_limit (u32 session_limit, u32 vrf_id); /** * @brief Initialize NAT44 data @@ -1288,6 +1367,19 @@ void nat44_db_init (snat_main_per_thread_data_t * tsm); */ void nat44_db_free (snat_main_per_thread_data_t * tsm); +/** + * @brief Delete specific NAT44 EI user and his sessions + * + * @param addr IPv4 address + * @param fib_index FIB table index + */ +int nat44_ei_user_del (ip4_address_t * addr, u32 fib_index); + +/** + * @brief Free all NAT44 sessions + */ +void nat44_sessions_clear (); + /** * @brief Find or create NAT user * @@ -1344,11 +1436,13 @@ void nat_set_alloc_addr_and_port_default (void); * * @param addresses vector of outside addresses * @param thread_index thread index - * @param k address, port and protocol + * @param key address, port and protocol */ -void snat_free_outside_address_and_port (snat_address_t * addresses, - u32 thread_index, - snat_session_key_t * k); +void +snat_free_outside_address_and_port (snat_address_t * addresses, + u32 thread_index, + ip4_address_t * addr, + u16 port, nat_protocol_t protocol); /** * @brief Alloc outside address and port @@ -1356,7 +1450,6 @@ void snat_free_outside_address_and_port (snat_address_t * addresses, * @param addresses vector of outside addresses * @param fib_index FIB table index * @param thread_index thread index - * @param k allocated address and port pair * @param port_per_thread number of ports per thread * @param snat_thread_index NAT thread index * @@ -1365,33 +1458,47 @@ void snat_free_outside_address_and_port (snat_address_t * addresses, int snat_alloc_outside_address_and_port (snat_address_t * addresses, u32 fib_index, u32 thread_index, - snat_session_key_t * k, + nat_protocol_t proto, + ip4_address_t * addr, + u16 * port, u16 port_per_thread, u32 snat_thread_index); +void expire_per_vrf_sessions (u32 fib_index); + /** * @brief Match NAT44 static mapping. * - * @param match address and port to match - * @param mapping external/local address and port of the matched mapping - * @param by_external if 0 match by local address otherwise match by external - * address - * @param is_addr_only 1 if matched mapping is address only - * @param twice_nat matched mapping is twice NAT type - * @param lb 1 if matched mapping is load-balanced - * @param ext_host_addr external host address + * @param key address and port to match + * @param addr external/local address of the matched mapping + * @param port port of the matched mapping + * @param fib_index fib index of the matched mapping + * @param by_external if 0 match by local address otherwise match by external + * address + * @param is_addr_only 1 if matched mapping is address only + * @param twice_nat matched mapping is twice NAT type + * @param lb 1 if matched mapping is load-balanced + * @param ext_host_addr external host address + * @param is_identity_nat 1 if indentity mapping + * @param out if !=0 set to pointer of the mapping structure * * @returns 0 if match found otherwise 1. */ int snat_static_mapping_match (snat_main_t * sm, - snat_session_key_t match, - snat_session_key_t * mapping, + ip4_address_t match_addr, + u16 match_port, + u32 match_fib_index, + nat_protocol_t match_protocol, + ip4_address_t * mapping_addr, + u16 * mapping_port, + u32 * mapping_fib_index, u8 by_external, u8 * is_addr_only, twice_nat_type_t * twice_nat, lb_nat_type_t * lb, ip4_address_t * ext_host_addr, - u8 * is_identity_nat); + u8 * is_identity_nat, + snat_static_mapping_t ** out); /** * @brief Add/del NAT address to FIB. @@ -1408,6 +1515,46 @@ int snat_static_mapping_match (snat_main_t * sm, void snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, u32 sw_if_index, int is_add); +void +nat_ha_sadd_cb (ip4_address_t * in_addr, u16 in_port, + ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, + ip4_address_t * ehn_addr, u16 ehn_port, u8 proto, + u32 fib_index, u16 flags, u32 thread_index); + +void +nat_ha_sdel_cb (ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, u8 proto, u32 fib_index, + u32 ti); + +void +nat_ha_sref_cb (ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, u8 proto, u32 fib_index, + u32 total_pkts, u64 total_bytes, u32 thread_index); + +void +nat_ha_sadd_ed_cb (ip4_address_t * in_addr, u16 in_port, + ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, + ip4_address_t * ehn_addr, u16 ehn_port, u8 proto, + u32 fib_index, u16 flags, u32 thread_index); + +void +nat_ha_sdel_ed_cb (ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, u8 proto, + u32 fib_index, u32 ti); + +void +nat_ha_sdel_ed_cb (ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, u8 proto, + u32 fib_index, u32 ti); + +void +nat_ha_sref_ed_cb (ip4_address_t * out_addr, u16 out_port, + ip4_address_t * eh_addr, u16 eh_port, u8 proto, + u32 fib_index, u32 total_pkts, u64 total_bytes, + u32 thread_index); + /* * Why is this here? Because we don't need to touch this layer to * simply reply to an icmp. We need to change id to a unique @@ -1425,6 +1572,8 @@ typedef struct u16 src_port, dst_port; } tcp_udp_header_t; +u8 *format_user_kvp (u8 * s, va_list * args); + #endif /* __included_nat_h__ */ /* * fd.io coding-style-patch-verification: ON