X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fnat%2Fnat.h;h=61d26b2076ca95fadc130a0b0334a3782371979b;hb=ebdf190;hp=1e8e3ca0403063a8de00b2ed5f85be7715deb21d;hpb=7b929793feba7d966c34b1ddb31dc818174f3a57;p=vpp.git diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h index 1e8e3ca0403..61d26b2076c 100644 --- a/src/plugins/nat/nat.h +++ b/src/plugins/nat/nat.h @@ -115,8 +115,10 @@ typedef enum { _(3, TCP_ESTABLISHED, "tcp-established") \ _(4, TCP_FIN_WAIT, "tcp-fin-wait") \ _(5, TCP_CLOSE_WAIT, "tcp-close-wait") \ - _(6, TCP_LAST_ACK, "tcp-last-ack") \ - _(7, ICMP_ACTIVE, "icmp-active") + _(6, TCP_CLOSING, "tcp-closing") \ + _(7, TCP_LAST_ACK, "tcp-last-ack") \ + _(8, TCP_CLOSED, "tcp-closed") \ + _(9, ICMP_ACTIVE, "icmp-active") typedef enum { #define _(v, N, s) SNAT_SESSION_##N = v, @@ -125,10 +127,12 @@ typedef enum { } snat_session_state_t; -#define SNAT_SESSION_FLAG_STATIC_MAPPING 1 -#define SNAT_SESSION_FLAG_UNKNOWN_PROTO 2 -#define SNAT_SESSION_FLAG_LOAD_BALANCING 4 -#define SNAT_SESSION_FLAG_TWICE_NAT 8 +#define SNAT_SESSION_FLAG_STATIC_MAPPING 1 +#define SNAT_SESSION_FLAG_UNKNOWN_PROTO 2 +#define SNAT_SESSION_FLAG_LOAD_BALANCING 4 +#define SNAT_SESSION_FLAG_TWICE_NAT 8 +#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT 16 +#define SNAT_SESSION_FLAG_FWD_BYPASS 32 #define NAT_INTERFACE_FLAG_IS_INSIDE 1 #define NAT_INTERFACE_FLAG_IS_OUTSIDE 2 @@ -162,6 +166,9 @@ typedef CLIB_PACKED(struct { /* External hos address and port after translation */ ip4_address_t ext_host_nat_addr; /* 74-77 */ u16 ext_host_nat_port; /* 78-79 */ + + /* TCP session state */ + u8 state; }) snat_session_t; @@ -210,17 +217,25 @@ typedef struct { u8 prefix; } nat44_lb_addr_port_t; +typedef enum { + TWICE_NAT_DISABLED, + TWICE_NAT, + TWICE_NAT_SELF, +} twice_nat_type_t; + typedef struct { ip4_address_t local_addr; ip4_address_t external_addr; u16 local_port; u16 external_port; u8 addr_only; - u8 twice_nat; + twice_nat_type_t twice_nat; + u8 out2in_only; u32 vrf_id; u32 fib_index; snat_protocol_t proto; u32 worker_index; + u8 *tag; nat44_lb_addr_port_t *locals; } snat_static_mapping_t; @@ -239,6 +254,7 @@ typedef struct { int addr_only; int twice_nat; int is_add; + u8 *tag; } snat_static_map_resolve_t; typedef struct { @@ -357,6 +373,7 @@ typedef struct snat_main_s { u8 static_mapping_only; u8 static_mapping_connection_tracking; u8 deterministic; + u8 out2in_dpo; u32 translation_buckets; u32 translation_memory_size; u32 max_translations; @@ -417,7 +434,8 @@ int snat_static_mapping_match (snat_main_t * sm, snat_session_key_t * mapping, u8 by_external, u8 *is_addr_only, - u8 *twice_nat); + twice_nat_type_t *twice_nat, + u8 *lb); void snat_add_del_addr_to_fib (ip4_address_t * addr, u8 p_len, @@ -425,6 +443,9 @@ void snat_add_del_addr_to_fib (ip4_address_t * addr, int is_add); 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_det_map_ses; typedef struct { u32 cached_sw_if_index; @@ -455,11 +476,17 @@ typedef struct { */ #define is_lb_session(s) (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 +*/ +#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) (snat_is_unk_proto_session (s) || is_twice_nat_session (s) || is_lb_session (s)) +#define is_ed_session(s) (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT) #define nat_interface_is_inside(i) i->flags & NAT_INTERFACE_FLAG_IS_INSIDE #define nat_interface_is_outside(i) i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE @@ -539,10 +566,12 @@ void snat_add_address(snat_main_t *sm, ip4_address_t *addr, u32 vrf_id, u8 twice_nat); int snat_del_address(snat_main_t *sm, ip4_address_t addr, u8 delete_sm, u8 twice_nat); +void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add); 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, snat_protocol_t proto, int is_add, - u8 twice_nat); + twice_nat_type_t twice_nat, u8 out2in_only, + u8 *tag); clib_error_t * snat_api_init(vlib_main_t * vm, snat_main_t * sm); int snat_set_workers (uword * bitmap); int snat_interface_add_del(u32 sw_if_index, u8 is_inside, int is_del); @@ -555,7 +584,8 @@ u8 * format_snat_protocol(u8 * s, va_list * args); int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, snat_protocol_t proto, u32 vrf_id, nat44_lb_addr_port_t *locals, u8 is_add, - u8 twice_nat); + twice_nat_type_t twice_nat, u8 out2in_only, + u8 *tag); int nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port, snat_protocol_t proto, u32 vrf_id, int is_in); void nat_free_session_data (snat_main_t * sm, snat_session_t * s, @@ -564,6 +594,9 @@ snat_user_t * nat_user_get_or_create (snat_main_t *sm, ip4_address_t *addr, u32 fib_index, u32 thread_index); snat_session_t * nat_session_alloc_or_recycle (snat_main_t *sm, snat_user_t *u, u32 thread_index); +void nat_set_alloc_addr_and_port_mape (u16 psid, u16 psid_offset, + u16 psid_length); +void nat_set_alloc_addr_and_port_default (void); static_always_inline u8 icmp_is_error_message (icmp46_header_t * icmp) @@ -641,4 +674,37 @@ nat_send_all_to_node(vlib_main_t *vm, u32 *bi_vector, } } +always_inline void +user_session_increment(snat_main_t *sm, snat_user_t *u, u8 is_static) +{ + if (u->nsessions + u->nstaticsessions < sm->max_translations_per_user) + { + if (is_static) + u->nstaticsessions++; + else + u->nsessions++; + } +} + +always_inline void +nat44_set_tcp_session_state(snat_main_t * sm, snat_session_t * ses, + tcp_header_t * tcp, u32 thread_index) +{ + if (tcp->flags & TCP_FLAG_FIN && ses->state == SNAT_SESSION_UNKNOWN) + ses->state = SNAT_SESSION_TCP_FIN_WAIT; + else if (tcp->flags & TCP_FLAG_FIN && ses->state == SNAT_SESSION_TCP_FIN_WAIT) + ses->state = SNAT_SESSION_TCP_CLOSING; + else if (tcp->flags & TCP_FLAG_ACK && ses->state == SNAT_SESSION_TCP_FIN_WAIT) + ses->state = SNAT_SESSION_TCP_CLOSE_WAIT; + else if (tcp->flags & TCP_FLAG_FIN && ses->state == SNAT_SESSION_TCP_CLOSE_WAIT) + ses->state = SNAT_SESSION_TCP_LAST_ACK; + else if (tcp->flags & TCP_FLAG_ACK && ses->state == SNAT_SESSION_TCP_CLOSING) + ses->state = SNAT_SESSION_TCP_LAST_ACK; + else if (tcp->flags & TCP_FLAG_ACK && ses->state == SNAT_SESSION_TCP_LAST_ACK) + { + nat_free_session_data (sm, ses, thread_index); + ses->state = SNAT_SESSION_TCP_CLOSED; + } +} + #endif /* __included_snat_h__ */