X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat44-ed%2Fnat44_ed.h;h=9772f1ec79a46f77e9eda518d50d77362532bf03;hb=67cc0a6922d41b34d251e08ce0ba0c9c58525e4f;hp=2710d29cb9dd15694e0bd9b625826ca3247208c4;hpb=d52a8921b85057682f2cf5bae7d6353142ba279a;p=vpp.git diff --git a/src/plugins/nat/nat44-ed/nat44_ed.h b/src/plugins/nat/nat44-ed/nat44_ed.h index 2710d29cb9d..9772f1ec79a 100644 --- a/src/plugins/nat/nat44-ed/nat44_ed.h +++ b/src/plugins/nat/nat44-ed/nat44_ed.h @@ -39,16 +39,20 @@ /* default number of worker handoff frame queue elements */ #define NAT_FQ_NELTS_DEFAULT 64 +/* number of attempts to get a port for ED overloading algorithm, if rolling + * a dice this many times doesn't produce a free port, it's treated + * as if there were no free ports available to conserve resources */ +#define ED_PORT_ALLOC_ATTEMPTS (10) + /* 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) +#define foreach_nat44_config_flag \ + _ (0x00, IS_ENDPOINT_INDEPENDENT) \ + _ (0x01, IS_ENDPOINT_DEPENDENT) \ + _ (0x02, IS_STATIC_MAPPING_ONLY) \ + _ (0x04, IS_CONNECTION_TRACKING) typedef enum nat44_config_flags_t_ { @@ -59,10 +63,6 @@ typedef enum nat44_config_flags_t_ typedef struct { - /* nat44 plugin features */ - u8 static_mapping_only; - u8 connection_tracking; - u32 inside_vrf; u32 outside_vrf; @@ -125,13 +125,14 @@ typedef enum #undef _ } snat_session_state_t; -#define foreach_nat_in2out_ed_error \ -_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \ -_(OUT_OF_PORTS, "out of ports") \ -_(BAD_ICMP_TYPE, "unsupported ICMP type") \ -_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ -_(NON_SYN, "non-SYN packet try to create session") \ -_(TCP_CLOSED, "drops due to TCP in transitory timeout") +#define foreach_nat_in2out_ed_error \ + _ (UNSUPPORTED_PROTOCOL, "unsupported protocol") \ + _ (OUT_OF_PORTS, "out of ports") \ + _ (BAD_ICMP_TYPE, "unsupported ICMP type") \ + _ (MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ + _ (NON_SYN, "non-SYN packet try to create session") \ + _ (TCP_CLOSED, "drops due to TCP in transitory timeout") \ + _ (TRNSL_FAILED, "couldn't translate packet") typedef enum { @@ -149,7 +150,8 @@ typedef enum _ (MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \ _ (NON_SYN, "non-SYN packet try to create session") \ _ (TCP_CLOSED, "drops due to TCP in transitory timeout") \ - _ (HASH_ADD_FAILED, "hash table add failed") + _ (HASH_ADD_FAILED, "hash table add failed") \ + _ (TRNSL_FAILED, "couldn't translate packet") typedef enum { @@ -171,7 +173,6 @@ typedef enum /* Session flags */ #define SNAT_SESSION_FLAG_STATIC_MAPPING (1 << 0) -#define SNAT_SESSION_FLAG_UNKNOWN_PROTO (1 << 1) #define SNAT_SESSION_FLAG_LOAD_BALANCING (1 << 2) #define SNAT_SESSION_FLAG_TWICE_NAT (1 << 3) #define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT (1 << 4) @@ -185,11 +186,14 @@ typedef enum #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_EXACT_ADDRESS 16 +#define NAT_SM_FLAG_SELF_TWICE_NAT (1 << 1) +#define NAT_SM_FLAG_TWICE_NAT (1 << 2) +#define NAT_SM_FLAG_IDENTITY_NAT (1 << 3) +#define NAT_SM_FLAG_ADDR_ONLY (1 << 4) +#define NAT_SM_FLAG_EXACT_ADDRESS (1 << 5) +#define NAT_SM_FLAG_OUT2IN_ONLY (1 << 6) +#define NAT_SM_FLAG_LB (1 << 7) +#define NAT_SM_FLAG_SWITCH_ADDRESS (1 << 8) typedef CLIB_PACKED(struct { @@ -304,7 +308,7 @@ typedef CLIB_PACKED(struct u16 port; } in2out; - nat_protocol_t nat_proto; + ip_protocol_t proto; nat_6t_flow_t i2o; nat_6t_flow_t o2i; @@ -351,13 +355,10 @@ typedef CLIB_PACKED(struct typedef struct { ip4_address_t addr; + ip4_address_t net; + u32 sw_if_index; u32 fib_index; -#define _(N, i, n, s) \ - u32 busy_##n##_ports; \ - u32 * busy_##n##_ports_per_thread; \ - u32 busy_##n##_port_refcounts[65535]; - foreach_nat_protocol -#undef _ + u32 addr_len; } snat_address_t; typedef struct @@ -408,7 +409,7 @@ typedef enum typedef struct { - /* prefered pool address */ + /* preferred pool address */ ip4_address_t pool_addr; /* local IP address */ ip4_address_t local_addr; @@ -418,13 +419,11 @@ typedef struct u16 local_port; /* external port */ u16 external_port; - /* is twice-nat */ - twice_nat_type_t twice_nat; /* local FIB table */ u32 vrf_id; u32 fib_index; /* protocol */ - nat_protocol_t proto; + ip_protocol_t proto; /* 0 = disabled, otherwise client IP affinity sticky time in seconds */ u32 affinity; /* worker threads used by backends/local host */ @@ -447,21 +446,31 @@ typedef struct typedef struct { + u8 is_resolved; ip4_address_t l_addr; ip4_address_t pool_addr; u16 l_port; u16 e_port; u32 sw_if_index; u32 vrf_id; - nat_protocol_t proto; + ip_protocol_t proto; u32 flags; - int addr_only; - int twice_nat; - int out2in_only; - int identity_nat; - int exact; u8 *tag; -} snat_static_map_resolve_t; +} snat_static_mapping_resolve_t; + +typedef struct +{ + u8 is_resolved; + u8 is_twice_nat; + u32 sw_if_index; +} snat_address_resolve_t; + +typedef struct +{ + u32 count; + u32 sw_if_index; + ip4_address_t addr; +} snat_fib_entry_reg_t; typedef struct { @@ -498,15 +507,10 @@ u32 nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip, /* Return worker thread index for given packet */ /* NAT address and port allocation function */ -typedef int (nat_alloc_out_addr_and_port_function_t) (snat_address_t * - addresses, - u32 fib_index, - u32 thread_index, - nat_protocol_t proto, - ip4_address_t * addr, - u16 * port, - u16 port_per_thread, - u32 snat_thread_index); +typedef int (nat_alloc_out_addr_and_port_function_t) ( + snat_address_t *addresses, u32 fib_index, u32 thread_index, + ip_protocol_t proto, ip4_address_t *addr, u16 *port, u16 port_per_thread, + u32 snat_thread_index); typedef struct snat_main_s { @@ -519,12 +523,6 @@ typedef struct snat_main_s /* Per thread data */ snat_main_per_thread_data_t *per_thread_data; - /* Find a static mapping by local */ - clib_bihash_8_8_t static_mapping_by_local; - - /* Find a static mapping by external */ - clib_bihash_8_8_t static_mapping_by_external; - /* Static mapping pool */ snat_static_mapping_t *static_mappings; @@ -538,9 +536,17 @@ typedef struct snat_main_s /* Interface pool */ snat_interface_t *interfaces; snat_interface_t *output_feature_interfaces; + // broken api backward compatibility + snat_interface_t *output_feature_dummy_interfaces; /* Vector of outside addresses */ snat_address_t *addresses; + /* Vector of twice NAT addresses for external hosts */ + snat_address_t *twice_nat_addresses; + + /* first interface address should be auto-added */ + snat_address_resolve_t *addr_to_resolve; + /* Address and port allocation function */ nat_alloc_out_addr_and_port_function_t *alloc_addr_and_port; /* Address and port allocation type */ @@ -559,15 +565,11 @@ typedef struct snat_main_s /* vector of outside fibs */ nat_outside_fib_t *outside_fibs; - /* Vector of twice NAT addresses for external hosts */ - snat_address_t *twice_nat_addresses; - - /* sw_if_indices whose intfc addresses should be auto-added */ - u32 *auto_add_sw_if_indices; - u32 *auto_add_sw_if_indices_twice_nat; + /* vector of fib entries */ + snat_fib_entry_reg_t *fib_entry_reg; /* vector of interface address static mappings to resolve. */ - snat_static_map_resolve_t *to_resolve; + snat_static_mapping_resolve_t *sm_to_resolve; /* Randomize port allocation order */ u32 random_seed; @@ -587,10 +589,6 @@ typedef struct snat_main_s /* If forwarding is enabled */ u8 forwarding_enabled; - /* static mapping config */ - u8 static_mapping_only; - u8 static_mapping_connection_tracking; - /* Is translation memory size calculated or user defined */ u8 translation_memory_size_set; @@ -662,9 +660,6 @@ typedef struct snat_main_s fib_source_t fib_src_hi; fib_source_t fib_src_low; - /* pat - dynamic mapping enabled or conneciton tracking */ - u8 pat; - /* number of worker handoff frame queue elements */ u32 frame_queue_nelts; @@ -711,117 +706,155 @@ extern fib_source_t nat_fib_src_low; 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_snat_key; format_function_t format_static_mapping_key; -format_function_t format_nat_protocol; format_function_t format_nat_addr_and_port_alloc_alg; -/* unformat functions */ -unformat_function_t unformat_nat_protocol; /** \brief Check if SNAT session is created from static mapping. @param s SNAT session - @return 1 if SNAT session is created from static mapping otherwise 0 -*/ -#define snat_is_session_static(s) (s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING) - -/** \brief Check if SNAT session for unknown protocol. - @param s SNAT session - @return 1 if SNAT session for unknown protocol otherwise 0 + @return true if SNAT session is created from static mapping otherwise 0 */ -#define snat_is_unk_proto_session(s) (s->flags & SNAT_SESSION_FLAG_UNKNOWN_PROTO) +always_inline bool +nat44_ed_is_session_static (snat_session_t *s) +{ + return s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING; +} /** \brief Check if NAT session is twice NAT. @param s NAT session - @return 1 if NAT session is twice NAT + @return true if NAT session is twice NAT */ -#define is_twice_nat_session(s) (s->flags & SNAT_SESSION_FLAG_TWICE_NAT) +always_inline bool +nat44_ed_is_twice_nat_session (snat_session_t *s) +{ + return s->flags & SNAT_SESSION_FLAG_TWICE_NAT; +} /** \brief Check if NAT session is load-balancing. @param s NAT session - @return 1 if NAT session is load-balancing + @return true if NAT session is load-balancing */ -#define is_lb_session(s) (s->flags & SNAT_SESSION_FLAG_LOAD_BALANCING) +always_inline bool +nat44_ed_is_lb_session (snat_session_t *s) +{ + return s->flags & SNAT_SESSION_FLAG_LOAD_BALANCING; +} /** \brief Check if NAT session is forwarding bypass. @param s NAT session - @return 1 if NAT session is load-balancing + @return true if NAT session is load-balancing */ -#define is_fwd_bypass_session(s) (s->flags & SNAT_SESSION_FLAG_FWD_BYPASS) - -/** \brief Check if NAT session is endpoint dependent. - @param s NAT session - @return 1 if NAT session is endpoint dependent -*/ -#define is_ed_session(s) (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT) +always_inline bool +na44_ed_is_fwd_bypass_session (snat_session_t *s) +{ + return s->flags & SNAT_SESSION_FLAG_FWD_BYPASS; +} /** \brief Check if NAT session has affinity record. @param s NAT session - @return 1 if NAT session has affinity record + @return true if NAT session has affinity record */ -#define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY) +always_inline bool +nat44_ed_is_affinity_session (snat_session_t *s) +{ + return 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 + @return true if exact pool address */ -#define is_exact_address_session(s) (s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS) +always_inline bool +nat44_ed_is_exact_address_session (snat_session_t *s) +{ + return s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS; +} /** \brief Check if NAT interface is inside. @param i NAT interface - @return 1 if inside interface + @return true if inside interface */ -#define nat_interface_is_inside(i) i->flags & NAT_INTERFACE_FLAG_IS_INSIDE +always_inline bool +nat44_ed_is_interface_inside (snat_interface_t *i) +{ + return i->flags & NAT_INTERFACE_FLAG_IS_INSIDE; +} /** \brief Check if NAT interface is outside. @param i NAT interface - @return 1 if outside interface + @return true if outside interface */ -#define nat_interface_is_outside(i) i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE +always_inline bool +nat44_ed_is_interface_outside (snat_interface_t *i) +{ + return i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE; +} /** \brief Check if NAT44 endpoint-dependent TCP session is closed. @param s NAT session - @return 1 if session is closed + @return true if session is closed */ -#define nat44_is_ses_closed(s) s->state == 0xf +always_inline bool +nat44_is_ses_closed (snat_session_t *s) +{ + return s->state == 0xf; +} -/** \brief Check if NAT static mapping is address only (1:1NAT). - @param sm NAT static mapping - @return 1 if 1:1NAT, 0 if 1:1NAPT +/** \brief Check if client initiating TCP connection (received SYN from client) + @param t TCP header + @return true if client initiating TCP connection */ -#define is_addr_only_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_ADDR_ONLY) +always_inline bool +tcp_flags_is_init (u8 f) +{ + return (f & TCP_FLAG_SYN) && !(f & TCP_FLAG_ACK); +} -/** \brief Check if NAT static mapping match only out2in direction. - @param sm NAT static mapping - @return 1 if rule match only out2in direction -*/ -#define is_out2in_only_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY) +always_inline bool +is_sm_addr_only (u32 f) +{ + return (f & NAT_SM_FLAG_ADDR_ONLY); +} -/** \brief Check if NAT static mapping is identity NAT. - @param sm NAT static mapping - @return 1 if identity NAT -*/ -#define is_identity_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT) +always_inline bool +is_sm_out2in_only (u32 f) +{ + return (f & NAT_SM_FLAG_OUT2IN_ONLY); +} -/** \brief Check if NAT static mapping is load-balancing. - @param sm NAT static mapping - @return 1 if load-balancing -*/ -#define is_lb_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_LB) +always_inline bool +is_sm_identity_nat (u32 f) +{ + return (f & NAT_SM_FLAG_IDENTITY_NAT); +} -/** \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) +always_inline bool +is_sm_lb (u32 f) +{ + return (f & NAT_SM_FLAG_LB); +} -/** \brief Check if client initiating TCP connection (received SYN from client) - @param t TCP header - @return 1 if client initiating TCP connection -*/ always_inline bool -tcp_flags_is_init (u8 f) +is_sm_exact_address (u32 f) { - return (f & TCP_FLAG_SYN) && !(f & TCP_FLAG_ACK); + return (f & NAT_SM_FLAG_EXACT_ADDRESS); +} + +always_inline bool +is_sm_self_twice_nat (u32 f) +{ + return (f & NAT_SM_FLAG_SELF_TWICE_NAT); +} + +always_inline bool +is_sm_twice_nat (u32 f) +{ + return (f & NAT_SM_FLAG_TWICE_NAT); +} + +always_inline bool +is_sm_switch_address (u32 f) +{ + return (f & NAT_SM_FLAG_SWITCH_ADDRESS); } /* logging */ @@ -836,158 +869,44 @@ tcp_flags_is_init (u8 f) #define nat_log_debug(...)\ vlib_log(VLIB_LOG_LEVEL_DEBUG, snat_main.log_class, __VA_ARGS__) -/** - * @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); +clib_error_t *nat44_api_hookup (vlib_main_t *vm); -/** - * @brief Disable NAT44 plugin - * - * @return 0 on success, non-zero value otherwise - */ -int nat44_plugin_disable (); - -/** - * @brief Add external address to NAT44 pool - * - * @param sm snat global configuration data - * @param addr IPv4 address - * @param vrf_id VRF id of tenant, ~0 means independent of VRF - * @param twice_nat 1 if twice NAT address - * - * @return 0 on success, non-zero value otherwise - */ -int snat_add_address (snat_main_t * sm, ip4_address_t * addr, u32 vrf_id, - u8 twice_nat); - -/** - * @brief Delete external address from NAT44 pool - * - * @param sm snat global configuration data - * @param addr IPv4 address - * @param delete_sm 1 if delete static mapping using address - * @param twice_nat 1 if twice NAT address - * - * @return 0 on success, non-zero value otherwise - */ -int snat_del_address (snat_main_t * sm, ip4_address_t addr, u8 delete_sm, - u8 twice_nat); +int snat_set_workers (uword *bitmap); -/** - * @brief Add/delete external address to FIB DPO (out2in DPO mode) - * - * @param addr IPv4 address - * @param is_add 1 = add, 0 = delete - * - * @return 0 on success, non-zero value otherwise - */ -void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add); - -/** - * @brief Add/delete NAT44 static mapping - * - * @param l_addr local IPv4 address - * @param e_addr external IPv4 address - * @param l_port local port number - * @param e_port external port number - * @param vrf_id local VRF ID - * @param addr_only 1 = 1:1NAT, 0 = 1:1NAPT - * @param sw_if_index use interface address as external IPv4 address - * @param proto L4 protocol - * @param is_add 1 = add, 0 = delete - * @param twice_nat twice-nat mode - * @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 - */ -int snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, - u16 l_port, u16 e_port, u32 vrf_id, - 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, - ip4_address_t pool_addr, int exact); +int nat44_plugin_enable (nat44_config_t c); +int nat44_plugin_disable (); -/** - * @brief Add/delete static mapping with load-balancing (multiple backends) - * - * @param e_addr external IPv4 address - * @param e_port external port number - * @param proto L4 protocol - * @param locals list of local backends - * @param is_add 1 = add, 0 = delete - * @param twice_nat twice-nat mode - * @param out2in_only if 1 rule match only out2in direction - * @param tag opaque string tag - * @param affinity 0 = disabled, otherwise client IP affinity sticky time - * - * @return 0 on success, non-zero value otherwise - */ -int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, - nat_protocol_t proto, - nat44_lb_addr_port_t * locals, u8 is_add, - twice_nat_type_t twice_nat, - u8 out2in_only, u8 * tag, u32 affinity); +int nat44_ed_add_interface (u32 sw_if_index, u8 is_inside); +int nat44_ed_del_interface (u32 sw_if_index, u8 is_inside); +int nat44_ed_add_output_interface (u32 sw_if_index); +int nat44_ed_del_output_interface (u32 sw_if_index); -int nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port, - ip4_address_t l_addr, u16 l_port, - nat_protocol_t proto, u32 vrf_id, - u8 probability, u8 is_add); +int nat44_ed_add_address (ip4_address_t *addr, u32 vrf_id, u8 twice_nat); +int nat44_ed_del_address (ip4_address_t addr, u8 twice_nat); +int nat44_ed_add_interface_address (u32 sw_if_index, u8 twice_nat); +int nat44_ed_del_interface_address (u32 sw_if_index, u8 twice_nat); -clib_error_t *nat44_api_hookup (vlib_main_t * vm); +int nat44_ed_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, + u16 l_port, u16 e_port, ip_protocol_t proto, + u32 vrf_id, u32 sw_if_index, u32 flags, + ip4_address_t pool_addr, u8 *tag); -/** - * @brief Set NAT plugin workers - * - * @param bitmap NAT workers bitmap - * - * @return 0 on success, non-zero value otherwise - */ -int snat_set_workers (uword * bitmap); +int nat44_ed_del_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, + u16 l_port, u16 e_port, ip_protocol_t proto, + u32 vrf_id, u32 sw_if_index, u32 flags); -/** - * @brief Enable/disable NAT44 feature on the interface - * - * @param sw_if_index software index of the interface - * @param is_inside 1 = inside, 0 = outside - * @param is_del 1 = delete, 0 = add - * - * @return 0 on success, non-zero value otherwise - */ -int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del); +int nat44_ed_add_lb_static_mapping (ip4_address_t e_addr, u16 e_port, + ip_protocol_t proto, + nat44_lb_addr_port_t *locals, u32 flags, + u8 *tag, u32 affinity); -/** - * @brief Enable/disable NAT44 output feature on the interface (postrouting NAT) - * - * @param sw_if_index software index of the interface - * @param is_inside 1 = inside, 0 = outside - * @param is_del 1 = delete, 0 = add - * - * @return 0 on success, non-zero value otherwise - */ -int snat_interface_add_del_output_feature (u32 sw_if_index, u8 is_inside, - int is_del); +int nat44_ed_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, + ip_protocol_t proto, u32 flags); -/** - * @brief Add/delete NAT44 pool address from specific interface - * - * @param sw_if_index software index of the interface - * @param is_del 1 = delete, 0 = add - * @param twice_nat 1 = twice NAT address for external hosts - * - * @return 0 on success, non-zero value otherwise - */ -int snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del, - u8 twice_nat); +int nat44_ed_add_del_lb_static_mapping_local (ip4_address_t e_addr, u16 e_port, + ip4_address_t l_addr, u16 l_port, + ip_protocol_t proto, u32 vrf_id, + u8 probability, u8 is_add); /** * @brief Delete NAT44 endpoint-dependent session @@ -1001,20 +920,12 @@ int snat_add_interface_address (snat_main_t * sm, u32 sw_if_index, int is_del, * * @return 0 on success, non-zero value otherwise */ -int nat44_del_ed_session (snat_main_t * sm, ip4_address_t * addr, u16 port, - ip4_address_t * eh_addr, u16 eh_port, u8 proto, +int nat44_ed_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port, + ip4_address_t *eh_addr, u16 eh_port, u8 proto, u32 vrf_id, int is_in); -/** - * @brief Free NAT44 session data (lookup keys, external address port) - * - * @param sm snat global configuration data - * @param s NAT session - * @param thread_index thread index - * @param is_ha is HA event - */ -void nat_free_session_data (snat_main_t * sm, snat_session_t * s, - u32 thread_index, u8 is_ha); +void nat44_ed_free_session_data (snat_main_t *sm, snat_session_t *s, + u32 thread_index, u8 is_ha); /** * @brief Set NAT44 session limit (session limit, vrf id) @@ -1034,19 +945,6 @@ int nat44_set_session_limit (u32 session_limit, u32 vrf_id); */ int nat44_update_session_limit (u32 session_limit, u32 vrf_id); -/** - * @brief Free outside address and port pair - * - * @param addresses vector of outside addresses - * @param thread_index thread index - * @param key address, port and protocol - */ -void -snat_free_outside_address_and_port (snat_address_t * addresses, - u32 thread_index, - ip4_address_t * addr, - u16 port, nat_protocol_t protocol); - void expire_per_vrf_sessions (u32 fib_index); /** @@ -1069,51 +967,12 @@ void expire_per_vrf_sessions (u32 fib_index); */ int snat_static_mapping_match ( vlib_main_t *vm, snat_main_t *sm, ip4_address_t match_addr, u16 match_port, - u32 match_fib_index, nat_protocol_t match_protocol, + u32 match_fib_index, ip_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, + int 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, snat_static_mapping_t **out); -/** - * @brief Add/del NAT address to FIB. - * - * Add the external NAT address to the FIB as receive entries. This ensures - * that VPP will reply to ARP for this address and we don't need to enable - * proxy ARP on the outside interface. - * - * @param addr IPv4 address - * @param plen address prefix length - * @param sw_if_index software index of the outside interface - * @param is_add 0 = delete, 1 = add. - */ -void snat_add_del_addr_to_fib (ip4_address_t * addr, - u8 p_len, u32 sw_if_index, int is_add); - -#if 0 -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_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); -#endif - -int nat_set_outside_address_and_port (snat_address_t *addresses, - u32 thread_index, ip4_address_t addr, - u16 port, nat_protocol_t protocol); - /* * 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 @@ -1150,12 +1009,18 @@ typedef enum NAT_ED_TRNSL_ERR_SUCCESS = 0, NAT_ED_TRNSL_ERR_TRANSLATION_FAILED = 1, NAT_ED_TRNSL_ERR_FLOW_MISMATCH = 2, + NAT_ED_TRNSL_ERR_PACKET_TRUNCATED = 3, + NAT_ED_TRNSL_ERR_INNER_IP_CORRUPT = 4, + NAT_ED_TRNSL_ERR_INVALID_CSUM = 5, } nat_translation_error_e; -nat_translation_error_e -nat_6t_flow_buf_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, - nat_6t_flow_t *f, nat_protocol_t proto, - int is_output_feature); +nat_translation_error_e nat_6t_flow_buf_translate_i2o ( + vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, + nat_6t_flow_t *f, ip_protocol_t proto, int is_output_feature); + +nat_translation_error_e nat_6t_flow_buf_translate_o2i ( + vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, + nat_6t_flow_t *f, ip_protocol_t proto, int is_output_feature); void nat_6t_l3_l4_csum_calc (nat_6t_flow_t *f); @@ -1163,6 +1028,26 @@ format_function_t format_nat_ed_translation_error; format_function_t format_nat_6t_flow; format_function_t format_ed_session_kvp; +snat_static_mapping_t *nat44_ed_sm_i2o_lookup (snat_main_t *sm, + ip4_address_t addr, u16 port, + u32 fib_index, u8 proto); + +snat_static_mapping_t *nat44_ed_sm_o2i_lookup (snat_main_t *sm, + ip4_address_t addr, u16 port, + u32 fib_index, u8 proto); + +void nat_syslog_nat44_sadd (u32 ssubix, u32 sfibix, ip4_address_t *isaddr, + u16 isport, ip4_address_t *idaddr, u16 idport, + ip4_address_t *xsaddr, u16 xsport, + ip4_address_t *xdaddr, u16 xdport, u8 proto, + u8 is_twicenat); + +void nat_syslog_nat44_sdel (u32 ssubix, u32 sfibix, ip4_address_t *isaddr, + u16 isport, ip4_address_t *idaddr, u16 idport, + ip4_address_t *xsaddr, u16 xsport, + ip4_address_t *xdaddr, u16 xdport, u8 proto, + u8 is_twicenat); + #endif /* __included_nat44_ed_h__ */ /* * fd.io coding-style-patch-verification: ON