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Vector Packet Processing
nat44_ed.h File Reference
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Data Structures

struct  nat44_config_t
 
struct  nat_pre_trace_t
 
union  nat_6t_t
 
struct  nat_6t_flow_t
 
struct  snat_address_t
 
struct  nat_fib_t
 
struct  nat_outside_fib_t
 
struct  nat44_lb_addr_port_t
 
struct  snat_static_mapping_t
 
struct  snat_interface_t
 
struct  snat_static_map_resolve_t
 
struct  snat_main_per_thread_data_t
 
struct  snat_main_s
 
struct  nat44_is_idle_session_ctx_t
 
struct  snat_runtime_t
 
struct  icmp_echo_header_t
 
struct  tcp_udp_header_t
 

Macros

#define NAT_FQ_NELTS_DEFAULT   64
 
#define SNAT_FLAG_HAIRPINNING   (1 << 0)
 
#define foreach_nat44_config_flag
 
#define foreach_nat_addr_and_port_alloc_alg
 
#define foreach_snat_session_state
 
#define foreach_nat_in2out_ed_error
 
#define foreach_nat_out2in_ed_error
 
#define NAT44_SES_I2O_FIN   1
 
#define NAT44_SES_O2I_FIN   2
 
#define NAT44_SES_I2O_FIN_ACK   4
 
#define NAT44_SES_O2I_FIN_ACK   8
 
#define NAT44_SES_I2O_SYN   16
 
#define NAT44_SES_O2I_SYN   32
 
#define NAT44_SES_RST   64
 
#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)
 
#define SNAT_SESSION_FLAG_FWD_BYPASS   (1 << 5)
 
#define SNAT_SESSION_FLAG_AFFINITY   (1 << 6)
 
#define SNAT_SESSION_FLAG_EXACT_ADDRESS   (1 << 7)
 
#define SNAT_SESSION_FLAG_HAIRPINNING   (1 << 8)
 
#define NAT_INTERFACE_FLAG_IS_INSIDE   1
 
#define NAT_INTERFACE_FLAG_IS_OUTSIDE   2
 
#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_FLOW_OP_SADDR_REWRITE   (1 << 1)
 
#define NAT_FLOW_OP_SPORT_REWRITE   (1 << 2)
 
#define NAT_FLOW_OP_DADDR_REWRITE   (1 << 3)
 
#define NAT_FLOW_OP_DPORT_REWRITE   (1 << 4)
 
#define NAT_FLOW_OP_ICMP_ID_REWRITE   (1 << 5)
 
#define NAT_FLOW_OP_TXFIB_REWRITE   (1 << 6)
 
#define snat_is_session_static(s)   (s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING)
 Check if SNAT session is created from static mapping. More...
 
#define snat_is_unk_proto_session(s)   (s->flags & SNAT_SESSION_FLAG_UNKNOWN_PROTO)
 Check if SNAT session for unknown protocol. More...
 
#define is_twice_nat_session(s)   (s->flags & SNAT_SESSION_FLAG_TWICE_NAT)
 Check if NAT session is twice NAT. More...
 
#define is_lb_session(s)   (s->flags & SNAT_SESSION_FLAG_LOAD_BALANCING)
 Check if NAT session is load-balancing. More...
 
#define is_fwd_bypass_session(s)   (s->flags & SNAT_SESSION_FLAG_FWD_BYPASS)
 Check if NAT session is forwarding bypass. More...
 
#define is_ed_session(s)   (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT)
 Check if NAT session is endpoint dependent. More...
 
#define is_affinity_sessions(s)   (s->flags & SNAT_SESSION_FLAG_AFFINITY)
 Check if NAT session has affinity record. More...
 
#define is_exact_address_session(s)   (s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS)
 Check if exact pool address should be used. More...
 
#define nat_interface_is_inside(i)   i->flags & NAT_INTERFACE_FLAG_IS_INSIDE
 Check if NAT interface is inside. More...
 
#define nat_interface_is_outside(i)   i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE
 Check if NAT interface is outside. More...
 
#define nat44_is_ses_closed(s)   s->state == 0xf
 Check if NAT44 endpoint-dependent TCP session is closed. More...
 
#define is_addr_only_static_mapping(sm)   (sm->flags & NAT_STATIC_MAPPING_FLAG_ADDR_ONLY)
 Check if NAT static mapping is address only (1:1NAT). More...
 
#define is_out2in_only_static_mapping(sm)   (sm->flags & NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY)
 Check if NAT static mapping match only out2in direction. More...
 
#define is_identity_static_mapping(sm)   (sm->flags & NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT)
 Check if NAT static mapping is identity NAT. More...
 
#define is_lb_static_mapping(sm)   (sm->flags & NAT_STATIC_MAPPING_FLAG_LB)
 Check if NAT static mapping is load-balancing. More...
 
#define is_exact_address(s)   (s->flags & NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS)
 Check if exact pool address should be used. More...
 
#define nat_log_err(...)   vlib_log(VLIB_LOG_LEVEL_ERR, snat_main.log_class, __VA_ARGS__)
 
#define nat_log_warn(...)   vlib_log(VLIB_LOG_LEVEL_WARNING, snat_main.log_class, __VA_ARGS__)
 
#define nat_log_notice(...)   vlib_log(VLIB_LOG_LEVEL_NOTICE, snat_main.log_class, __VA_ARGS__)
 
#define nat_log_info(...)   vlib_log(VLIB_LOG_LEVEL_INFO, snat_main.log_class, __VA_ARGS__)
 
#define nat_log_debug(...)   vlib_log(VLIB_LOG_LEVEL_DEBUG, snat_main.log_class, __VA_ARGS__)
 

Typedefs

typedef enum nat44_config_flags_t_ nat44_config_flags_t
 
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 struct snat_main_s snat_main_t
 

Enumerations

enum  nat44_config_flags_t_ { foreach_nat44_config_flag }
 
enum  nat_next_t {
  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,
  NAT_NEXT_IN2OUT_CLASSIFY, NAT_NEXT_OUT2IN_CLASSIFY, NAT_N_NEXT
}
 
enum  nat_addr_and_port_alloc_alg_t { foreach_nat_addr_and_port_alloc_alg }
 
enum  snat_session_state_t { foreach_snat_session_state }
 
enum  nat_in2out_ed_error_t { NAT_IN2OUT_ED_N_ERROR }
 
enum  nat_out2in_ed_error_t { NAT_OUT2IN_ED_N_ERROR }
 
enum  twice_nat_type_t { TWICE_NAT_DISABLED, TWICE_NAT, TWICE_NAT_SELF }
 
enum  lb_nat_type_t { NO_LB_NAT, LB_NAT, AFFINITY_LB_NAT }
 
enum  nat_translation_error_e { NAT_ED_TRNSL_ERR_SUCCESS = 0, NAT_ED_TRNSL_ERR_TRANSLATION_FAILED = 1, NAT_ED_TRNSL_ERR_FLOW_MISMATCH = 2 }
 

Functions

typedef CLIB_PACKED (struct { u32 ses_count;u32 rx_fib_index;u32 tx_fib_index;u8 expired;}) per_vrf_sessions_t
 
 STATIC_ASSERT_SIZEOF (nat_6t_t, 2 *sizeof(u64))
 
void nat44_ed_forwarding_enable_disable (u8 is_enable)
 
static void nat_6t_flow_saddr_rewrite_set (nat_6t_flow_t *f, u32 saddr)
 
static void nat_6t_flow_daddr_rewrite_set (nat_6t_flow_t *f, u32 daddr)
 
static void nat_6t_flow_sport_rewrite_set (nat_6t_flow_t *f, u32 sport)
 
static void nat_6t_flow_dport_rewrite_set (nat_6t_flow_t *f, u32 dport)
 
static void nat_6t_flow_txfib_rewrite_set (nat_6t_flow_t *f, u32 tx_fib_index)
 
static void nat_6t_flow_icmp_id_rewrite_set (nat_6t_flow_t *f, u16 id)
 
typedef CLIB_PACKED (struct { struct { ip4_address_t addr;u32 fib_index;u16 port;} out2in;struct { ip4_address_t addr;u32 fib_index;u16 port;} in2out;nat_protocol_t nat_proto;nat_6t_flow_t i2o;nat_6t_flow_t o2i;u32 flags;u32 lru_head_index;u32 lru_index;f64 last_lru_update;f64 last_heard;f64 ha_last_refreshed;u64 total_bytes;u32 total_pkts;ip4_address_t ext_host_addr;u16 ext_host_port;ip4_address_t ext_host_nat_addr;u16 ext_host_nat_port;u8 state;u32 i2o_fin_seq;u32 o2i_fin_seq;u64 tcp_closed_timestamp;u32 per_vrf_sessions_index;u32 thread_index;}) snat_session_t
 
u32 nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u8 is_output)
 
u32 nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u8 is_output)
 
static bool tcp_flags_is_init (u8 f)
 Check if client initiating TCP connection (received SYN from client) More...
 
int nat44_plugin_enable (nat44_config_t c)
 Enable NAT44 plugin. More...
 
int nat44_plugin_disable ()
 Disable NAT44 plugin. More...
 
int snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id, u8 twice_nat)
 Add external address to NAT44 pool. More...
 
int snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm, u8 twice_nat)
 Delete external address from NAT44 pool. More...
 
void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add)
 Add/delete external address to FIB DPO (out2in DPO mode) More...
 
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)
 Add/delete NAT44 static mapping. More...
 
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)
 Add/delete static mapping with load-balancing (multiple backends) More...
 
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)
 
clib_error_tnat44_api_hookup (vlib_main_t *vm)
 
int snat_set_workers (uword *bitmap)
 Set NAT plugin workers. More...
 
int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
 Enable/disable NAT44 feature on the interface. More...
 
int snat_interface_add_del_output_feature (u32 sw_if_index, u8 is_inside, int is_del)
 Enable/disable NAT44 output feature on the interface (postrouting NAT) More...
 
int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del, u8 twice_nat)
 Add/delete NAT44 pool address from specific interface. More...
 
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, u32 vrf_id, int is_in)
 Delete NAT44 endpoint-dependent session. More...
 
void nat_free_session_data (snat_main_t *sm, snat_session_t *s, u32 thread_index, u8 is_ha)
 Free NAT44 session data (lookup keys, external address port) More...
 
int nat44_set_session_limit (u32 session_limit, u32 vrf_id)
 Set NAT44 session limit (session limit, vrf id) More...
 
int nat44_update_session_limit (u32 session_limit, u32 vrf_id)
 Update NAT44 session limit flushing all data (session limit, vrf id) More...
 
void snat_free_outside_address_and_port (snat_address_t *addresses, u32 thread_index, ip4_address_t *addr, u16 port, nat_protocol_t protocol)
 Free outside address and port pair. More...
 
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, 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, snat_static_mapping_t **out)
 Match NAT44 static mapping. More...
 
void snat_add_del_addr_to_fib (ip4_address_t *addr, u8 p_len, u32 sw_if_index, int is_add)
 Add/del NAT address to FIB. More...
 
int nat_set_outside_address_and_port (snat_address_t *addresses, u32 thread_index, ip4_address_t addr, u16 port, nat_protocol_t protocol)
 
u32 get_thread_idx_by_port (u16 e_port)
 
u8format_static_mapping_kvp (u8 *s, va_list *args)
 
u8format_session_kvp (u8 *s, va_list *args)
 
u32 nat_calc_bihash_buckets (u32 n_elts)
 
void nat44_addresses_free (snat_address_t **addresses)
 
void nat44_ed_sessions_clear ()
 
int nat44_ed_set_frame_queue_nelts (u32 frame_queue_nelts)
 
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)
 
void nat_6t_l3_l4_csum_calc (nat_6t_flow_t *f)
 

Variables

snat_main_t snat_main
 
vlib_node_registration_t nat_default_node
 (constructor) VLIB_REGISTER_NODE (nat_default_node) More...
 
vlib_node_registration_t nat_pre_in2out_node
 (constructor) VLIB_REGISTER_NODE (nat_pre_in2out_node) More...
 
vlib_node_registration_t nat_pre_out2in_node
 (constructor) VLIB_REGISTER_NODE (nat_pre_out2in_node) More...
 
vlib_node_registration_t snat_in2out_node
 
vlib_node_registration_t snat_in2out_output_node
 
vlib_node_registration_t snat_out2in_node
 
vlib_node_registration_t snat_in2out_worker_handoff_node
 (constructor) VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node) More...
 
vlib_node_registration_t snat_in2out_output_worker_handoff_node
 (constructor) VLIB_REGISTER_NODE (snat_in2out_output_worker_handoff_node) More...
 
vlib_node_registration_t snat_out2in_worker_handoff_node
 (constructor) VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node) More...
 
vlib_node_registration_t nat44_ed_in2out_node
 (constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_node) More...
 
vlib_node_registration_t nat44_ed_in2out_output_node
 (constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_output_node) More...
 
vlib_node_registration_t nat44_ed_out2in_node
 (constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_node) More...
 
fib_source_t nat_fib_src_hi
 
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_function_t unformat_nat_protocol
 
format_function_t format_nat_ed_translation_error
 
format_function_t format_nat_6t_flow
 
format_function_t format_ed_session_kvp
 

Macro Definition Documentation

◆ foreach_nat44_config_flag

#define foreach_nat44_config_flag
Value:
_(0x00, IS_ENDPOINT_INDEPENDENT) \
_(0x01, IS_ENDPOINT_DEPENDENT) \
_(0x02, IS_STATIC_MAPPING_ONLY) \
_(0x04, IS_CONNECTION_TRACKING) \
_(0x08, IS_OUT2IN_DPO)

Definition at line 45 of file nat44_ed.h.

◆ foreach_nat_addr_and_port_alloc_alg

#define foreach_nat_addr_and_port_alloc_alg
Value:
_(0, DEFAULT, "default") \
_(1, MAPE, "map-e") \
_(2, RANGE, "port-range")

Definition at line 95 of file nat44_ed.h.

◆ foreach_nat_in2out_ed_error

#define foreach_nat_in2out_ed_error
Value:
_(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")

Definition at line 127 of file nat44_ed.h.

◆ foreach_nat_out2in_ed_error

#define foreach_nat_out2in_ed_error
Value:
_ (UNSUPPORTED_PROTOCOL, "unsupported protocol") \
_ (OUT_OF_PORTS, "out of ports") \
_ (BAD_ICMP_TYPE, "unsupported ICMP type") \
_ (NO_TRANSLATION, "no translation") \
_ (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")

Definition at line 143 of file nat44_ed.h.

◆ foreach_snat_session_state

#define foreach_snat_session_state
Value:
_(0, UNKNOWN, "unknown") \
_(1, UDP_ACTIVE, "udp-active") \
_(2, TCP_SYN_SENT, "tcp-syn-sent") \
_(3, TCP_ESTABLISHED, "tcp-established") \
_(4, TCP_FIN_WAIT, "tcp-fin-wait") \
_(5, TCP_CLOSE_WAIT, "tcp-close-wait") \
_(6, TCP_CLOSING, "tcp-closing") \
_(7, TCP_LAST_ACK, "tcp-last-ack") \
_(8, TCP_CLOSED, "tcp-closed") \
_(9, ICMP_ACTIVE, "icmp-active")

Definition at line 108 of file nat44_ed.h.

◆ is_addr_only_static_mapping

#define is_addr_only_static_mapping (   sm)    (sm->flags & NAT_STATIC_MAPPING_FLAG_ADDR_ONLY)

Check if NAT static mapping is address only (1:1NAT).

Parameters
smNAT static mapping
Returns
1 if 1:1NAT, 0 if 1:1NAPT

Definition at line 790 of file nat44_ed.h.

◆ is_affinity_sessions

#define is_affinity_sessions (   s)    (s->flags & SNAT_SESSION_FLAG_AFFINITY)

Check if NAT session has affinity record.

Parameters
sNAT session
Returns
1 if NAT session has affinity record

Definition at line 760 of file nat44_ed.h.

◆ is_ed_session

#define is_ed_session (   s)    (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT)

Check if NAT session is endpoint dependent.

Parameters
sNAT session
Returns
1 if NAT session is endpoint dependent

Definition at line 754 of file nat44_ed.h.

◆ is_exact_address

#define is_exact_address (   s)    (s->flags & NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS)

Check if exact pool address should be used.

Parameters
sSNAT session
Returns
1 if exact pool address or 0

Definition at line 814 of file nat44_ed.h.

◆ is_exact_address_session

#define is_exact_address_session (   s)    (s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS)

Check if exact pool address should be used.

Parameters
sSNAT session
Returns
1 if exact pool address or 0

Definition at line 766 of file nat44_ed.h.

◆ is_fwd_bypass_session

#define is_fwd_bypass_session (   s)    (s->flags & SNAT_SESSION_FLAG_FWD_BYPASS)

Check if NAT session is forwarding bypass.

Parameters
sNAT session
Returns
1 if NAT session is load-balancing

Definition at line 748 of file nat44_ed.h.

◆ is_identity_static_mapping

#define is_identity_static_mapping (   sm)    (sm->flags & NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT)

Check if NAT static mapping is identity NAT.

Parameters
smNAT static mapping
Returns
1 if identity NAT

Definition at line 802 of file nat44_ed.h.

◆ is_lb_session

#define is_lb_session (   s)    (s->flags & SNAT_SESSION_FLAG_LOAD_BALANCING)

Check if NAT session is load-balancing.

Parameters
sNAT session
Returns
1 if NAT session is load-balancing

Definition at line 742 of file nat44_ed.h.

◆ is_lb_static_mapping

#define is_lb_static_mapping (   sm)    (sm->flags & NAT_STATIC_MAPPING_FLAG_LB)

Check if NAT static mapping is load-balancing.

Parameters
smNAT static mapping
Returns
1 if load-balancing

Definition at line 808 of file nat44_ed.h.

◆ is_out2in_only_static_mapping

#define is_out2in_only_static_mapping (   sm)    (sm->flags & NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY)

Check if NAT static mapping match only out2in direction.

Parameters
smNAT static mapping
Returns
1 if rule match only out2in direction

Definition at line 796 of file nat44_ed.h.

◆ is_twice_nat_session

#define is_twice_nat_session (   s)    (s->flags & SNAT_SESSION_FLAG_TWICE_NAT)

Check if NAT session is twice NAT.

Parameters
sNAT session
Returns
1 if NAT session is twice NAT

Definition at line 736 of file nat44_ed.h.

◆ nat44_is_ses_closed

#define nat44_is_ses_closed (   s)    s->state == 0xf

Check if NAT44 endpoint-dependent TCP session is closed.

Parameters
sNAT session
Returns
1 if session is closed

Definition at line 784 of file nat44_ed.h.

◆ NAT44_SES_I2O_FIN

#define NAT44_SES_I2O_FIN   1

Definition at line 163 of file nat44_ed.h.

◆ NAT44_SES_I2O_FIN_ACK

#define NAT44_SES_I2O_FIN_ACK   4

Definition at line 165 of file nat44_ed.h.

◆ NAT44_SES_I2O_SYN

#define NAT44_SES_I2O_SYN   16

Definition at line 167 of file nat44_ed.h.

◆ NAT44_SES_O2I_FIN

#define NAT44_SES_O2I_FIN   2

Definition at line 164 of file nat44_ed.h.

◆ NAT44_SES_O2I_FIN_ACK

#define NAT44_SES_O2I_FIN_ACK   8

Definition at line 166 of file nat44_ed.h.

◆ NAT44_SES_O2I_SYN

#define NAT44_SES_O2I_SYN   32

Definition at line 168 of file nat44_ed.h.

◆ NAT44_SES_RST

#define NAT44_SES_RST   64

Definition at line 169 of file nat44_ed.h.

◆ NAT_FLOW_OP_DADDR_REWRITE

#define NAT_FLOW_OP_DADDR_REWRITE   (1 << 3)

Definition at line 225 of file nat44_ed.h.

◆ NAT_FLOW_OP_DPORT_REWRITE

#define NAT_FLOW_OP_DPORT_REWRITE   (1 << 4)

Definition at line 226 of file nat44_ed.h.

◆ NAT_FLOW_OP_ICMP_ID_REWRITE

#define NAT_FLOW_OP_ICMP_ID_REWRITE   (1 << 5)

Definition at line 227 of file nat44_ed.h.

◆ NAT_FLOW_OP_SADDR_REWRITE

#define NAT_FLOW_OP_SADDR_REWRITE   (1 << 1)

Definition at line 223 of file nat44_ed.h.

◆ NAT_FLOW_OP_SPORT_REWRITE

#define NAT_FLOW_OP_SPORT_REWRITE   (1 << 2)

Definition at line 224 of file nat44_ed.h.

◆ NAT_FLOW_OP_TXFIB_REWRITE

#define NAT_FLOW_OP_TXFIB_REWRITE   (1 << 6)

Definition at line 228 of file nat44_ed.h.

◆ NAT_FQ_NELTS_DEFAULT

#define NAT_FQ_NELTS_DEFAULT   64

Definition at line 39 of file nat44_ed.h.

◆ NAT_INTERFACE_FLAG_IS_INSIDE

#define NAT_INTERFACE_FLAG_IS_INSIDE   1

Definition at line 183 of file nat44_ed.h.

◆ NAT_INTERFACE_FLAG_IS_OUTSIDE

#define NAT_INTERFACE_FLAG_IS_OUTSIDE   2

Definition at line 184 of file nat44_ed.h.

◆ nat_interface_is_inside

#define nat_interface_is_inside (   i)    i->flags & NAT_INTERFACE_FLAG_IS_INSIDE

Check if NAT interface is inside.

Parameters
iNAT interface
Returns
1 if inside interface

Definition at line 772 of file nat44_ed.h.

◆ nat_interface_is_outside

#define nat_interface_is_outside (   i)    i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE

Check if NAT interface is outside.

Parameters
iNAT interface
Returns
1 if outside interface

Definition at line 778 of file nat44_ed.h.

◆ nat_log_debug

#define nat_log_debug (   ...)    vlib_log(VLIB_LOG_LEVEL_DEBUG, snat_main.log_class, __VA_ARGS__)

Definition at line 835 of file nat44_ed.h.

◆ nat_log_err

#define nat_log_err (   ...)    vlib_log(VLIB_LOG_LEVEL_ERR, snat_main.log_class, __VA_ARGS__)

Definition at line 827 of file nat44_ed.h.

◆ nat_log_info

#define nat_log_info (   ...)    vlib_log(VLIB_LOG_LEVEL_INFO, snat_main.log_class, __VA_ARGS__)

Definition at line 833 of file nat44_ed.h.

◆ nat_log_notice

#define nat_log_notice (   ...)    vlib_log(VLIB_LOG_LEVEL_NOTICE, snat_main.log_class, __VA_ARGS__)

Definition at line 831 of file nat44_ed.h.

◆ nat_log_warn

#define nat_log_warn (   ...)    vlib_log(VLIB_LOG_LEVEL_WARNING, snat_main.log_class, __VA_ARGS__)

Definition at line 829 of file nat44_ed.h.

◆ NAT_STATIC_MAPPING_FLAG_ADDR_ONLY

#define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY   1

Definition at line 187 of file nat44_ed.h.

◆ NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS

#define NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS   16

Definition at line 191 of file nat44_ed.h.

◆ NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT

#define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT   4

Definition at line 189 of file nat44_ed.h.

◆ NAT_STATIC_MAPPING_FLAG_LB

#define NAT_STATIC_MAPPING_FLAG_LB   8

Definition at line 190 of file nat44_ed.h.

◆ NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY

#define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY   2

Definition at line 188 of file nat44_ed.h.

◆ SNAT_FLAG_HAIRPINNING

#define SNAT_FLAG_HAIRPINNING   (1 << 0)

Definition at line 42 of file nat44_ed.h.

◆ snat_is_session_static

#define snat_is_session_static (   s)    (s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING)

Check if SNAT session is created from static mapping.

Parameters
sSNAT session
Returns
1 if SNAT session is created from static mapping otherwise 0

Definition at line 724 of file nat44_ed.h.

◆ snat_is_unk_proto_session

#define snat_is_unk_proto_session (   s)    (s->flags & SNAT_SESSION_FLAG_UNKNOWN_PROTO)

Check if SNAT session for unknown protocol.

Parameters
sSNAT session
Returns
1 if SNAT session for unknown protocol otherwise 0

Definition at line 730 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_AFFINITY

#define SNAT_SESSION_FLAG_AFFINITY   (1 << 6)

Definition at line 178 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT

#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT   (1 << 4)

Definition at line 176 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_EXACT_ADDRESS

#define SNAT_SESSION_FLAG_EXACT_ADDRESS   (1 << 7)

Definition at line 179 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_FWD_BYPASS

#define SNAT_SESSION_FLAG_FWD_BYPASS   (1 << 5)

Definition at line 177 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_HAIRPINNING

#define SNAT_SESSION_FLAG_HAIRPINNING   (1 << 8)

Definition at line 180 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_LOAD_BALANCING

#define SNAT_SESSION_FLAG_LOAD_BALANCING   (1 << 2)

Definition at line 174 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_STATIC_MAPPING

#define SNAT_SESSION_FLAG_STATIC_MAPPING   (1 << 0)

Definition at line 172 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_TWICE_NAT

#define SNAT_SESSION_FLAG_TWICE_NAT   (1 << 3)

Definition at line 175 of file nat44_ed.h.

◆ SNAT_SESSION_FLAG_UNKNOWN_PROTO

#define SNAT_SESSION_FLAG_UNKNOWN_PROTO   (1 << 1)

Definition at line 173 of file nat44_ed.h.

Typedef Documentation

◆ nat44_config_flags_t

◆ nat_alloc_out_addr_and_port_function_t

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)

Definition at line 500 of file nat44_ed.h.

◆ snat_main_t

typedef struct snat_main_s snat_main_t

Enumeration Type Documentation

◆ lb_nat_type_t

Enumerator
NO_LB_NAT 
LB_NAT 
AFFINITY_LB_NAT 

Definition at line 398 of file nat44_ed.h.

◆ nat44_config_flags_t_

Enumerator
foreach_nat44_config_flag 

Definition at line 52 of file nat44_ed.h.

◆ nat_addr_and_port_alloc_alg_t

Enumerator
foreach_nat_addr_and_port_alloc_alg 

Definition at line 100 of file nat44_ed.h.

◆ nat_in2out_ed_error_t

Enumerator
NAT_IN2OUT_ED_N_ERROR 

Definition at line 135 of file nat44_ed.h.

◆ nat_next_t

enum nat_next_t
Enumerator
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 
NAT_NEXT_IN2OUT_CLASSIFY 
NAT_NEXT_OUT2IN_CLASSIFY 
NAT_N_NEXT 

Definition at line 73 of file nat44_ed.h.

◆ nat_out2in_ed_error_t

Enumerator
NAT_OUT2IN_ED_N_ERROR 

Definition at line 153 of file nat44_ed.h.

◆ nat_translation_error_e

Enumerator
NAT_ED_TRNSL_ERR_SUCCESS 
NAT_ED_TRNSL_ERR_TRANSLATION_FAILED 
NAT_ED_TRNSL_ERR_FLOW_MISMATCH 

Definition at line 1147 of file nat44_ed.h.

◆ snat_session_state_t

Enumerator
foreach_snat_session_state 

Definition at line 120 of file nat44_ed.h.

◆ twice_nat_type_t

Enumerator
TWICE_NAT_DISABLED 
TWICE_NAT 
TWICE_NAT_SELF 

Definition at line 388 of file nat44_ed.h.

Function Documentation

◆ CLIB_PACKED() [1/2]

typedef CLIB_PACKED ( struct { struct { ip4_address_t addr;u32 fib_index;u16 port;} out2in;struct { ip4_address_t addr;u32 fib_index;u16 port;} in2out;nat_protocol_t nat_proto;nat_6t_flow_t i2o;nat_6t_flow_t o2i;u32 flags;u32 lru_head_index;u32 lru_index;f64 last_lru_update;f64 last_heard;f64 ha_last_refreshed;u64 total_bytes;u32 total_pkts;ip4_address_t ext_host_addr;u16 ext_host_port;ip4_address_t ext_host_nat_addr;u16 ext_host_nat_port;u8 state;u32 i2o_fin_seq;u32 o2i_fin_seq;u64 tcp_closed_timestamp;u32 per_vrf_sessions_index;u32 thread_index;}  )

◆ CLIB_PACKED() [2/2]

typedef CLIB_PACKED ( struct { u32 ses_count;u32 rx_fib_index;u32 tx_fib_index;u8 expired;}  )

◆ expire_per_vrf_sessions()

void expire_per_vrf_sessions ( u32  fib_index)

Definition at line 1340 of file nat44_ed.c.

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◆ format_session_kvp()

u8* format_session_kvp ( u8 s,
va_list *  args 
)

Definition at line 186 of file nat44_ed.c.

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◆ format_static_mapping_kvp()

u8* format_static_mapping_kvp ( u8 s,
va_list *  args 
)

Definition at line 198 of file nat44_ed.c.

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◆ get_thread_idx_by_port()

u32 get_thread_idx_by_port ( u16  e_port)

Definition at line 426 of file nat44_ed.c.

◆ nat44_add_del_address_dpo()

void nat44_add_del_address_dpo ( ip4_address_t  addr,
u8  is_add 
)

Add/delete external address to FIB DPO (out2in DPO mode)

Parameters
addrIPv4 address
is_add1 = add, 0 = delete
Returns
0 on success, non-zero value otherwise

◆ nat44_add_del_lb_static_mapping()

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 
)

Add/delete static mapping with load-balancing (multiple backends)

Parameters
e_addrexternal IPv4 address
e_portexternal port number
protoL4 protocol
localslist of local backends
is_add1 = add, 0 = delete
twice_nattwice-nat mode
out2in_onlyif 1 rule match only out2in direction
tagopaque string tag
affinity0 = disabled, otherwise client IP affinity sticky time
Returns
0 on success, non-zero value otherwise

Definition at line 856 of file nat44_ed.c.

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◆ nat44_addresses_free()

void nat44_addresses_free ( snat_address_t **  addresses)

Definition at line 2164 of file nat44_ed.c.

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◆ nat44_api_hookup()

clib_error_t* nat44_api_hookup ( vlib_main_t vm)

Definition at line 1552 of file nat44_ed_api.c.

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◆ nat44_del_ed_session()

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,
u32  vrf_id,
int  is_in 
)

Delete NAT44 endpoint-dependent session.

Parameters
smsnat global configuration data
addrIPv4 address
portL4 port number
protoL4 protocol
vrf_idVRF ID
is_in1 = inside network address and port pair, 0 = outside
Returns
0 on success, non-zero value otherwise

Definition at line 3144 of file nat44_ed.c.

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◆ nat44_ed_forwarding_enable_disable()

void nat44_ed_forwarding_enable_disable ( u8  is_enable)

Definition at line 2246 of file nat44_ed.c.

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◆ nat44_ed_get_in2out_worker_index()

u32 nat44_ed_get_in2out_worker_index ( vlib_buffer_t b,
ip4_header_t ip,
u32  rx_fib_index,
u8  is_output 
)

Definition at line 2503 of file nat44_ed.c.

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◆ nat44_ed_get_out2in_worker_index()

u32 nat44_ed_get_out2in_worker_index ( vlib_buffer_t b,
ip4_header_t ip,
u32  rx_fib_index,
u8  is_output 
)

Definition at line 2606 of file nat44_ed.c.

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◆ nat44_ed_sessions_clear()

void nat44_ed_sessions_clear ( )

Definition at line 2909 of file nat44_ed.c.

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◆ nat44_ed_set_frame_queue_nelts()

int nat44_ed_set_frame_queue_nelts ( u32  frame_queue_nelts)

Definition at line 1785 of file nat44_ed.c.

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◆ nat44_lb_static_mapping_add_del_local()

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 
)

Definition at line 1084 of file nat44_ed.c.

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◆ nat44_plugin_disable()

int nat44_plugin_disable ( )

Disable NAT44 plugin.

Returns
0 on success, non-zero value otherwise

Definition at line 2179 of file nat44_ed.c.

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◆ nat44_plugin_enable()

int nat44_plugin_enable ( nat44_config_t  c)

Enable NAT44 plugin.

Parameters
cnat44_config_t
Returns
0 on success, non-zero value otherwise

Definition at line 2099 of file nat44_ed.c.

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◆ nat44_set_session_limit()

int nat44_set_session_limit ( u32  session_limit,
u32  vrf_id 
)

Set NAT44 session limit (session limit, vrf id)

Parameters
session_limitSession limit
vrf_idVRF id
Returns
0 on success, non-zero value otherwise

Definition at line 2770 of file nat44_ed.c.

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◆ nat44_update_session_limit()

int nat44_update_session_limit ( u32  session_limit,
u32  vrf_id 
)

Update NAT44 session limit flushing all data (session limit, vrf id)

Parameters
session_limitSession limit
vrf_idVRF id
Returns
0 on success, non-zero value otherwise

Definition at line 2789 of file nat44_ed.c.

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◆ nat_6t_flow_buf_translate()

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 
)

Definition at line 3424 of file nat44_ed.c.

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◆ nat_6t_flow_daddr_rewrite_set()

static void nat_6t_flow_daddr_rewrite_set ( nat_6t_flow_t f,
u32  daddr 
)
inlinestatic

Definition at line 254 of file nat44_ed.h.

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◆ nat_6t_flow_dport_rewrite_set()

static void nat_6t_flow_dport_rewrite_set ( nat_6t_flow_t f,
u32  dport 
)
inlinestatic

Definition at line 268 of file nat44_ed.h.

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◆ nat_6t_flow_icmp_id_rewrite_set()

static void nat_6t_flow_icmp_id_rewrite_set ( nat_6t_flow_t f,
u16  id 
)
inlinestatic

Definition at line 282 of file nat44_ed.h.

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◆ nat_6t_flow_saddr_rewrite_set()

static void nat_6t_flow_saddr_rewrite_set ( nat_6t_flow_t f,
u32  saddr 
)
inlinestatic

Definition at line 247 of file nat44_ed.h.

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◆ nat_6t_flow_sport_rewrite_set()

static void nat_6t_flow_sport_rewrite_set ( nat_6t_flow_t f,
u32  sport 
)
inlinestatic

Definition at line 261 of file nat44_ed.h.

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◆ nat_6t_flow_txfib_rewrite_set()

static void nat_6t_flow_txfib_rewrite_set ( nat_6t_flow_t f,
u32  tx_fib_index 
)
inlinestatic

Definition at line 275 of file nat44_ed.h.

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◆ nat_6t_l3_l4_csum_calc()

void nat_6t_l3_l4_csum_calc ( nat_6t_flow_t f)

Definition at line 3205 of file nat44_ed.c.

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◆ nat_calc_bihash_buckets()

u32 nat_calc_bihash_buckets ( u32  n_elts)

Definition at line 122 of file lib.h.

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◆ nat_free_session_data()

void nat_free_session_data ( snat_main_t sm,
snat_session_t *  s,
u32  thread_index,
u8  is_ha 
)

Free NAT44 session data (lookup keys, external address port)

Parameters
smsnat global configuration data
sNAT session
thread_indexthread index
is_hais HA event

Definition at line 231 of file nat44_ed.c.

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◆ nat_set_outside_address_and_port()

int nat_set_outside_address_and_port ( snat_address_t addresses,
u32  thread_index,
ip4_address_t  addr,
u16  port,
nat_protocol_t  protocol 
)

Definition at line 2317 of file nat44_ed.c.

◆ snat_add_address()

int snat_add_address ( snat_main_t sm,
ip4_address_t addr,
u32  vrf_id,
u8  twice_nat 
)

Add external address to NAT44 pool.

Parameters
smsnat global configuration data
addrIPv4 address
vrf_idVRF id of tenant, ~0 means independent of VRF
twice_nat1 if twice NAT address
Returns
0 on success, non-zero value otherwise

Definition at line 320 of file nat44_ed.c.

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◆ snat_add_del_addr_to_fib()

void snat_add_del_addr_to_fib ( ip4_address_t addr,
u8  p_len,
u32  sw_if_index,
int  is_add 
)

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.

Parameters
addrIPv4 address
plenaddress prefix length
sw_if_indexsoftware index of the outside interface
is_add0 = delete, 1 = add.

Definition at line 291 of file nat44_ed.c.

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◆ snat_add_interface_address()

int snat_add_interface_address ( snat_main_t sm,
u32  sw_if_index,
int  is_del,
u8  twice_nat 
)

Add/delete NAT44 pool address from specific interface.

Parameters
sw_if_indexsoftware index of the interface
is_del1 = delete, 0 = add
twice_nat1 = twice NAT address for external hosts
Returns
0 on success, non-zero value otherwise

Definition at line 3076 of file nat44_ed.c.

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◆ snat_add_static_mapping()

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 
)

Add/delete NAT44 static mapping.

Parameters
l_addrlocal IPv4 address
e_addrexternal IPv4 address
l_portlocal port number
e_portexternal port number
vrf_idlocal VRF ID
addr_only1 = 1:1NAT, 0 = 1:1NAPT
sw_if_indexuse interface address as external IPv4 address
protoL4 protocol
is_add1 = add, 0 = delete
twice_nattwice-nat mode
out2in_onlyif 1 rule match only out2in direction
tagopaque string tag
identity_natidentity NAT
pool_addrpool IPv4 address
exact1 = exact pool address
Returns
0 on success, non-zero value otherwise

Definition at line 484 of file nat44_ed.c.

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◆ snat_del_address()

int snat_del_address ( snat_main_t sm,
ip4_address_t  addr,
u8  delete_sm,
u8  twice_nat 
)

Delete external address from NAT44 pool.

Parameters
smsnat global configuration data
addrIPv4 address
delete_sm1 if delete static mapping using address
twice_nat1 if twice NAT address
Returns
0 on success, non-zero value otherwise

Definition at line 1224 of file nat44_ed.c.

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◆ snat_free_outside_address_and_port()

void snat_free_outside_address_and_port ( snat_address_t addresses,
u32  thread_index,
ip4_address_t addr,
u16  port,
nat_protocol_t  protocol 
)

Free outside address and port pair.

Parameters
addressesvector of outside addresses
thread_indexthread index
keyaddress, port and protocol

Definition at line 2280 of file nat44_ed.c.

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◆ snat_interface_add_del()

int snat_interface_add_del ( u32  sw_if_index,
u8  is_inside,
int  is_del 
)

Enable/disable NAT44 feature on the interface.

Parameters
sw_if_indexsoftware index of the interface
is_inside1 = inside, 0 = outside
is_del1 = delete, 0 = add
Returns
0 on success, non-zero value otherwise

Definition at line 1397 of file nat44_ed.c.

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◆ snat_interface_add_del_output_feature()

int snat_interface_add_del_output_feature ( u32  sw_if_index,
u8  is_inside,
int  is_del 
)

Enable/disable NAT44 output feature on the interface (postrouting NAT)

Parameters
sw_if_indexsoftware index of the interface
is_inside1 = inside, 0 = outside
is_del1 = delete, 0 = add
Returns
0 on success, non-zero value otherwise

Definition at line 1595 of file nat44_ed.c.

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◆ snat_set_workers()

int snat_set_workers ( uword bitmap)

Set NAT plugin workers.

Parameters
bitmapNAT workers bitmap
Returns
0 on success, non-zero value otherwise

Definition at line 1759 of file nat44_ed.c.

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◆ snat_static_mapping_match()

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,
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,
snat_static_mapping_t **  out 
)

Match NAT44 static mapping.

Parameters
keyaddress and port to match
addrexternal/local address of the matched mapping
portport of the matched mapping
fib_indexfib index of the matched mapping
by_externalif 0 match by local address otherwise match by external address
is_addr_only1 if matched mapping is address only
twice_natmatched mapping is twice NAT type
lb1 if matched mapping is load-balanced
ext_host_addrexternal host address
is_identity_nat1 if indentity mapping
outif !=0 set to pointer of the mapping structure
Returns
0 if match found otherwise 1.

Definition at line 2354 of file nat44_ed.c.

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◆ STATIC_ASSERT_SIZEOF()

STATIC_ASSERT_SIZEOF ( nat_6t_t  ,
2 *  sizeofu64 
)

◆ tcp_flags_is_init()

static bool tcp_flags_is_init ( u8  f)
inlinestatic

Check if client initiating TCP connection (received SYN from client)

Parameters
tTCP header
Returns
1 if client initiating TCP connection

Definition at line 821 of file nat44_ed.h.

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Variable Documentation

◆ format_ed_session_kvp

format_function_t format_ed_session_kvp

Definition at line 1163 of file nat44_ed.h.

◆ format_nat_6t_flow

format_function_t format_nat_6t_flow

Definition at line 1162 of file nat44_ed.h.

◆ format_nat_addr_and_port_alloc_alg

format_function_t format_nat_addr_and_port_alloc_alg

Definition at line 716 of file nat44_ed.h.

◆ format_nat_ed_translation_error

format_function_t format_nat_ed_translation_error

Definition at line 1161 of file nat44_ed.h.

◆ format_nat_protocol

format_function_t format_nat_protocol

Definition at line 715 of file nat44_ed.h.

◆ format_snat_key

format_function_t format_snat_key

Definition at line 713 of file nat44_ed.h.

◆ format_snat_session

format_function_t format_snat_session

Definition at line 712 of file nat44_ed.h.

◆ format_snat_static_map_to_resolve

format_function_t format_snat_static_map_to_resolve

Definition at line 711 of file nat44_ed.h.

◆ format_snat_static_mapping

format_function_t format_snat_static_mapping

Definition at line 710 of file nat44_ed.h.

◆ format_static_mapping_key

format_function_t format_static_mapping_key

Definition at line 714 of file nat44_ed.h.

◆ nat44_ed_in2out_node

vlib_node_registration_t nat44_ed_in2out_node

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_node)

Definition at line 1513 of file nat44_ed_in2out.c.

◆ nat44_ed_in2out_output_node

vlib_node_registration_t nat44_ed_in2out_output_node

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_output_node)

Definition at line 1538 of file nat44_ed_in2out.c.

◆ nat44_ed_out2in_node

vlib_node_registration_t nat44_ed_out2in_node

(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_node)

Definition at line 1403 of file nat44_ed_out2in.c.

◆ nat_default_node

vlib_node_registration_t nat_default_node

(constructor) VLIB_REGISTER_NODE (nat_default_node)

Definition at line 3183 of file nat44_ed.c.

◆ nat_fib_src_hi

fib_source_t nat_fib_src_hi

Definition at line 22 of file dslite.c.

◆ nat_fib_src_low

fib_source_t nat_fib_src_low

◆ nat_pre_in2out_node

vlib_node_registration_t nat_pre_in2out_node

(constructor) VLIB_REGISTER_NODE (nat_pre_in2out_node)

Definition at line 1624 of file nat44_ed_in2out.c.

◆ nat_pre_out2in_node

vlib_node_registration_t nat_pre_out2in_node

(constructor) VLIB_REGISTER_NODE (nat_pre_out2in_node)

Definition at line 1454 of file nat44_ed_out2in.c.

◆ snat_in2out_node

vlib_node_registration_t snat_in2out_node

◆ snat_in2out_output_node

vlib_node_registration_t snat_in2out_output_node

◆ snat_in2out_output_worker_handoff_node

vlib_node_registration_t snat_in2out_output_worker_handoff_node

(constructor) VLIB_REGISTER_NODE (snat_in2out_output_worker_handoff_node)

Definition at line 318 of file nat44_ed_handoff.c.

◆ snat_in2out_worker_handoff_node

vlib_node_registration_t snat_in2out_worker_handoff_node

(constructor) VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node)

Definition at line 298 of file nat44_ed_handoff.c.

◆ snat_main

snat_main_t snat_main

Definition at line 41 of file nat44_ed.c.

◆ snat_out2in_node

vlib_node_registration_t snat_out2in_node

◆ snat_out2in_worker_handoff_node

vlib_node_registration_t snat_out2in_worker_handoff_node

(constructor) VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node)

Definition at line 337 of file nat44_ed_handoff.c.

◆ unformat_nat_protocol

unformat_function_t unformat_nat_protocol

Definition at line 718 of file nat44_ed.h.