Include dependency graph for nat.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	nat44_config_t

struct	nat_pre_trace_t

struct	snat_user_key_t

struct	snat_user_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 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_nat44_handoff_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

#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	SNAT_SESSION_FLAG_AFFINITY 64

#define	SNAT_SESSION_FLAG_EXACT_ADDRESS 128

#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	foreach_nat_counter _ (tcp) _ (udp) _ (icmp) _ (other) _ (drops)

#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__)

#define	foreach_nat_log_level

#define	nat_elog(_level, _str)

#define	nat_elog_addr(_level, _str, _addr)

#define	nat_elog_debug_handoff(_str, _tid, _fib, _src, _dst)

#define	nat_elog_debug_handoff_v2(_str, _prt, _fib, _src, _dst)

#define	nat_elog_X1(_level, _fmt, _arg, _val1)

#define	nat_elog_notice(nat_elog_str) nat_elog(SNAT_LOG_INFO, "[notice] " nat_elog_str)

#define	nat_elog_warn(nat_elog_str) nat_elog(SNAT_LOG_WARNING, "[warning] " nat_elog_str)

#define	nat_elog_err(nat_elog_str) nat_elog(SNAT_LOG_ERROR, "[error] " nat_elog_str)

#define	nat_elog_debug(nat_elog_str) nat_elog(SNAT_LOG_DEBUG, "[debug] " nat_elog_str)

#define	nat_elog_info(nat_elog_str) nat_elog(SNAT_LOG_INFO, "[info] " nat_elog_str)

#define	nat_elog_notice_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) nat_elog_X1(SNAT_LOG_NOTICE, "[notice] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

#define	nat_elog_warn_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) nat_elog_X1(SNAT_LOG_WARNING, "[warning] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

#define	nat_elog_err_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) nat_elog_X1(SNAT_LOG_ERROR, "[error] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

#define	nat_elog_debug_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) nat_elog_X1(SNAT_LOG_DEBUG, "[debug] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

#define	nat_elog_info_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) nat_elog_X1(SNAT_LOG_INFO, "[info] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

Typedefs
typedef enum nat44_config_flags_t_	nat44_config_flags_t

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, ip4_address_t addr, u16 port, u32 fib_index, nat_protocol_t proto, void d, void e, u8 *dont_translate)

typedef u32()	snat_get_worker_in2out_function_t(ip4_header_t *ip, u32 rx_fib_index, u8 is_output)

typedef u32()	snat_get_worker_out2in_function_t(vlib_buffer_t b, ip4_header_t ip, u32 rx_fib_index, u8 is_output)

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

typedef enum nat_log_level_t_	nat_log_level_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_OUT2IN_ED_HANDOFF, 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	nat44_handoff_error_t { NAT44_HANDOFF_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_log_level_t_ { foreach_nat_log_level }

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

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;u32 flags;u32 per_user_index;u32 per_user_list_head_index;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 user_index;u32 per_vrf_sessions_index;}) snat_session_t

static bool	tcp_flags_is_init (u8 f)
	Check if client initiating TCP connection (received SYN from client) More...

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, ip4_address_t addr, u16 port, u32 fib_index, nat_protocol_t proto, void d, void e, u8 *dont_translate)
	Get address and port values to be used for ICMP packet translation. More...

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, ip4_address_t addr, u16 port, u32 fib_index, nat_protocol_t proto, void d, void e, u8 *dont_translate)
	Get address and port values to be used for ICMP packet translation and create session if needed. More...

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, ip4_address_t addr, u16 port, u32 fib_index, nat_protocol_t proto, void d, void e, u8 *dont_translate)
	Get address and port values to be used for ICMP packet translation. More...

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, ip4_address_t addr, u16 port, u32 fib_index, nat_protocol_t proto, void d, void e, u8 *dont_translate)
	Get address and port values to be used for ICMP packet translation and create session if needed. More...

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, 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, 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, vlib_node_runtime_t node, u32 next0, u32 thread_index, void d, void *e)

u32	icmp_out2in (snat_main_t sm, vlib_buffer_t b0, ip4_header_t ip0, icmp46_header_t icmp0, u32 sw_if_index0, u32 rx_fib_index0, vlib_node_runtime_t node, u32 next0, u32 thread_index, void d, void *e)

u32	snat_icmp_hairpinning (snat_main_t sm, vlib_buffer_t b0, ip4_header_t ip0, icmp46_header_t icmp0, int is_ed)

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 (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, int do_trace)

int	nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t kv, void arg)

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)

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_t *	nat44_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_session (snat_main_t sm, ip4_address_t addr, u16 port, nat_protocol_t proto, u32 vrf_id, int is_in)
	Delete NAT44 session. 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	nat44_db_init (snat_main_per_thread_data_t *tsm)
	Initialize NAT44 data. More...

void	nat44_db_free (snat_main_per_thread_data_t *tsm)
	Free NAT44 data. More...

int	nat44_ei_user_del (ip4_address_t *addr, u32 fib_index)
	Delete specific NAT44 EI user and his sessions. More...

void	nat44_sessions_clear ()
	Free all NAT44 sessions. More...

snat_user_t *	nat_user_get_or_create (snat_main_t sm, ip4_address_t addr, u32 fib_index, u32 thread_index)
	Find or create NAT user. More...

snat_session_t *	nat_session_alloc_or_recycle (snat_main_t sm, snat_user_t u, u32 thread_index, f64 now)
	Allocate new NAT session or recycle last used. More...

void	nat_set_alloc_addr_and_port_mape (u16 psid, u16 psid_offset, u16 psid_length)
	Set address and port assignment algorithm for MAP-E CE. More...

void	nat_set_alloc_addr_and_port_range (u16 start_port, u16 end_port)
	Set address and port assignment algorithm for port range. More...

void	nat_set_alloc_addr_and_port_default (void)
	Set address and port assignment algorithm to default/standard. 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...

int	snat_alloc_outside_address_and_port (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)
	Alloc outside address and port. More...

void	expire_per_vrf_sessions (u32 fib_index)

int	snat_static_mapping_match (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...

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_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)

u8 *	format_user_kvp (u8 s, va_list args)

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
	(constructor) VLIB_REGISTER_NODE (snat_in2out_node) More...

vlib_node_registration_t	snat_in2out_output_node
	(constructor) VLIB_REGISTER_NODE (snat_in2out_output_node) More...

vlib_node_registration_t	snat_out2in_node
	(constructor) VLIB_REGISTER_NODE (snat_out2in_node) More...

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_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_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

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 46 of file nat.h.

◆ foreach_nat44_handoff_error

#define foreach_nat44_handoff_error

Value:

_(CONGESTION_DROP, "congestion drop")                     \
_(SAME_WORKER, "same worker")                             \
_(DO_HANDOFF, "do handoff")

Definition at line 166 of file nat.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 118 of file nat.h.

◆ foreach_nat_counter

#define foreach_nat_counter _ (tcp) _ (udp) _ (icmp) _ (other) _ (drops)

Definition at line 512 of file nat.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 150 of file nat.h.

◆ foreach_nat_log_level

#define foreach_nat_log_level

Value:

_(0x00, LOG_NONE)           \
  _(0x01, LOG_ERROR)          \
  _(0x02, LOG_WARNING)        \
  _(0x03, LOG_NOTICE)         \
  _(0x04, LOG_INFO)           \
  _(0x05, LOG_DEBUG)

Definition at line 901 of file nat.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")   \
_(MAX_USER_SESS_EXCEEDED, "max user sessions exceeded") \
_(CANNOT_CREATE_USER, "cannot create NAT user")         \
_(NON_SYN, "non-SYN packet try to create session")      \
_(TCP_CLOSED, "drops due to TCP in transitory timeout")

Definition at line 179 of file nat.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 131 of file nat.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

sm	NAT static mapping

Returns: 1 if 1:1NAT, 0 if 1:1NAPT

Definition at line 852 of file nat.h.

◆ is_affinity_sessions

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

Check if NAT session has affinity record.

Parameters

s	NAT session

Returns: 1 if NAT session has affinity record

Definition at line 822 of file nat.h.

◆ is_ed_session

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

Check if NAT session is endpoint dependent.

Parameters

s	NAT session

Returns: 1 if NAT session is endpoint dependent

Definition at line 816 of file nat.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

s	SNAT session

Returns: 1 if exact pool address or 0

Definition at line 876 of file nat.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

s	SNAT session

Returns: 1 if exact pool address or 0

Definition at line 828 of file nat.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

s	NAT session

Returns: 1 if NAT session is load-balancing

Definition at line 810 of file nat.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

sm	NAT static mapping

Returns: 1 if identity NAT

Definition at line 864 of file nat.h.

◆ is_lb_session

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

Check if NAT session is load-balancing.

Parameters

s	NAT session

Returns: 1 if NAT session is load-balancing

Definition at line 804 of file nat.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

sm	NAT static mapping

Returns: 1 if load-balancing

Definition at line 870 of file nat.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

sm	NAT static mapping

Returns: 1 if rule match only out2in direction

Definition at line 858 of file nat.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

s	NAT session

Returns: 1 if NAT session is twice NAT

Definition at line 798 of file nat.h.

◆ nat44_is_ses_closed

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

Check if NAT44 endpoint-dependent TCP session is closed.

Parameters

s	NAT session

Returns: 1 if session is closed

Definition at line 846 of file nat.h.

◆ NAT44_SES_I2O_FIN

#define NAT44_SES_I2O_FIN 1

Definition at line 200 of file nat.h.

◆ NAT44_SES_I2O_FIN_ACK

#define NAT44_SES_I2O_FIN_ACK 4

Definition at line 202 of file nat.h.

◆ NAT44_SES_I2O_SYN

#define NAT44_SES_I2O_SYN 16

Definition at line 204 of file nat.h.

◆ NAT44_SES_O2I_FIN

#define NAT44_SES_O2I_FIN 2

Definition at line 201 of file nat.h.

◆ NAT44_SES_O2I_FIN_ACK

#define NAT44_SES_O2I_FIN_ACK 8

Definition at line 203 of file nat.h.

◆ NAT44_SES_O2I_SYN

#define NAT44_SES_O2I_SYN 32

Definition at line 205 of file nat.h.

◆ NAT44_SES_RST

#define NAT44_SES_RST 64

Definition at line 206 of file nat.h.

◆ nat_elog

#define nat_elog	(	_level,
		_str
	)

Value:

do                                                       \
  {                                                      \
    snat_main_t *sm = &snat_main;                        \
    if (PREDICT_FALSE (sm->log_level >= _level))         \
      {                                                  \
        ELOG_TYPE_DECLARE (e) =                          \
          {                                              \
            .format = "nat-msg " _str,                   \
            .format_args = "",                           \
          };                                             \
        ELOG_DATA (&vlib_global_main.elog_main, e);      \
      }                                                  \
  } while (0);

Definition at line 916 of file nat.h.

◆ nat_elog_addr

#define nat_elog_addr	(	_level,
		_str,
		_addr
	)

Value:

do                                                       \
  {                                                      \
    if (PREDICT_FALSE (sm->log_level >= _level))         \
      {                                                  \
        ELOG_TYPE_DECLARE (e) =                          \
          {                                              \
            .format = "nat-msg " _str " %d.%d.%d.%d",    \
            .format_args = "i1i1i1i1",                   \
          };                                             \
        CLIB_PACKED(struct                               \
          {                                              \
            u8 oct1;                                     \
            u8 oct2;                                     \
            u8 oct3;                                     \
            u8 oct4;                                     \
          }) *ed;                                        \
        ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
        ed->oct4 = _addr >> 24;                          \
        ed->oct3 = _addr >> 16;                          \
        ed->oct2 = _addr >> 8;                           \
        ed->oct1 = _addr;                                \
    }                                                    \
  } while (0);

Definition at line 931 of file nat.h.

◆ nat_elog_debug

#define nat_elog_debug ( nat_elog_str ) nat_elog(SNAT_LOG_DEBUG, "[debug] " nat_elog_str)

Definition at line 1062 of file nat.h.

◆ nat_elog_debug_handoff

#define nat_elog_debug_handoff	(	_str,
		_tid,
		_fib,
		_src,
		_dst
	)

Value:

do                                                                          \
  {                                                                         \
  if (PREDICT_FALSE (sm->log_level >= SNAT_LOG_DEBUG))                      \
    {                                                                       \
      ELOG_TYPE_DECLARE (e) =                                               \
        {                                                                   \
          .format = "nat-msg " _str " ip src: %d.%d.%d.%d dst: %d.%d.%d.%d" \
                                    " tid from: %d to: %d fib: %d",         \
        .format_args = "i1i1i1i1i1i1i1i1i4i4i4",                            \
      };                                                                    \
      CLIB_PACKED(struct                                                    \
        {                                                                   \
          u8 src_oct1;                                                      \
          u8 src_oct2;                                                      \
          u8 src_oct3;                                                      \
          u8 src_oct4;                                                      \
          u8 dst_oct1;                                                      \
          u8 dst_oct2;                                                      \
          u8 dst_oct3;                                                      \
          u8 dst_oct4;                                                      \
          u32 ftid;                                                         \
          u32 ttid;                                                         \
          u32 fib;                                                          \
        }) *ed;                                                             \
      ed = ELOG_DATA (&vlib_global_main.elog_main, e);                      \
      ed->src_oct1 = _src >> 24;                                            \
      ed->src_oct2 = _src >> 16;                                            \
      ed->src_oct3 = _src >> 8;                                             \
      ed->src_oct4 = _src;                                                  \
      ed->dst_oct1 = _dst >> 24;                                            \
      ed->dst_oct2 = _dst >> 16;                                            \
      ed->dst_oct3 = _dst >> 8;                                             \
      ed->dst_oct4 = _dst;                                                  \
      ed->ftid = vlib_get_thread_index ();                                  \
      ed->ttid = _tid;                                                      \
      ed->fib = _fib;                                                       \
    }                                                                       \
  } while (0);

Definition at line 956 of file nat.h.

◆ nat_elog_debug_handoff_v2

#define nat_elog_debug_handoff_v2	(	_str,
		_prt,
		_fib,
		_src,
		_dst
	)

Value:

do                                                                           \
  {                                                                          \
  if (PREDICT_FALSE (sm->log_level >= SNAT_LOG_DEBUG))                       \
    {                                                                        \
      ELOG_TYPE_DECLARE (e) =                                                \
        {                                                                    \
          .format = "nat-msg " _str " ip_src:%d.%d.%d.%d ip_dst:%d.%d.%d.%d" \
                                    " tid:%d prt:%d fib:%d",                 \
        .format_args = "i1i1i1i1i1i1i1i1i4i4i4",                             \
      };                                                                     \
      CLIB_PACKED(struct                                                     \
        {                                                                    \
          u8 src_oct1;                                                       \
          u8 src_oct2;                                                       \
          u8 src_oct3;                                                       \
          u8 src_oct4;                                                       \
          u8 dst_oct1;                                                       \
          u8 dst_oct2;                                                       \
          u8 dst_oct3;                                                       \
          u8 dst_oct4;                                                       \
          u32 tid;                                                           \
          u32 prt;                                                           \
          u32 fib;                                                           \
        }) *ed;                                                              \
      ed = ELOG_DATA (&vlib_global_main.elog_main, e);                       \
      ed->src_oct1 = _src >> 24;                                             \
      ed->src_oct2 = _src >> 16;                                             \
      ed->src_oct3 = _src >> 8;                                              \
      ed->src_oct4 = _src;                                                   \
      ed->dst_oct1 = _dst >> 24;                                             \
      ed->dst_oct2 = _dst >> 16;                                             \
      ed->dst_oct3 = _dst >> 8;                                              \
      ed->dst_oct4 = _dst;                                                   \
      ed->tid = vlib_get_thread_index ();                                    \
      ed->prt = _prt;                                                        \
      ed->fib = _fib;                                                        \
    }                                                                        \
  } while (0);

Definition at line 996 of file nat.h.

◆ nat_elog_debug_X1

#define nat_elog_debug_X1	(	nat_elog_fmt_str,
		nat_elog_fmt_arg,
		nat_elog_val1
	)	nat_elog_X1(SNAT_LOG_DEBUG, "[debug] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

Definition at line 1073 of file nat.h.

◆ nat_elog_err

#define nat_elog_err ( nat_elog_str ) nat_elog(SNAT_LOG_ERROR, "[error] " nat_elog_str)

Definition at line 1060 of file nat.h.

◆ nat_elog_err_X1

#define nat_elog_err_X1	(	nat_elog_fmt_str,
		nat_elog_fmt_arg,
		nat_elog_val1
	)	nat_elog_X1(SNAT_LOG_ERROR, "[error] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

Definition at line 1071 of file nat.h.

◆ nat_elog_info

#define nat_elog_info ( nat_elog_str ) nat_elog(SNAT_LOG_INFO, "[info] " nat_elog_str)

Definition at line 1064 of file nat.h.

◆ nat_elog_info_X1

#define nat_elog_info_X1	(	nat_elog_fmt_str,
		nat_elog_fmt_arg,
		nat_elog_val1
	)	nat_elog_X1(SNAT_LOG_INFO, "[info] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

Definition at line 1075 of file nat.h.

◆ nat_elog_notice

#define nat_elog_notice ( nat_elog_str ) nat_elog(SNAT_LOG_INFO, "[notice] " nat_elog_str)

Definition at line 1056 of file nat.h.

◆ nat_elog_notice_X1

#define nat_elog_notice_X1	(	nat_elog_fmt_str,
		nat_elog_fmt_arg,
		nat_elog_val1
	)	nat_elog_X1(SNAT_LOG_NOTICE, "[notice] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

Definition at line 1067 of file nat.h.

◆ nat_elog_warn

#define nat_elog_warn ( nat_elog_str ) nat_elog(SNAT_LOG_WARNING, "[warning] " nat_elog_str)

Definition at line 1058 of file nat.h.

◆ nat_elog_warn_X1

#define nat_elog_warn_X1	(	nat_elog_fmt_str,
		nat_elog_fmt_arg,
		nat_elog_val1
	)	nat_elog_X1(SNAT_LOG_WARNING, "[warning] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)

Definition at line 1069 of file nat.h.

◆ nat_elog_X1

#define nat_elog_X1	(	_level,
		_fmt,
		_arg,
		_val1
	)

Value:

do                                                        \
  {                                                       \
    snat_main_t *sm = &snat_main;                         \
    if (PREDICT_FALSE (sm->log_level >= _level))          \
      {                                                   \
        ELOG_TYPE_DECLARE (e) =                           \
          {                                               \
            .format = "nat-msg " _fmt,                    \
            .format_args = _arg,                          \
          };                                              \
        CLIB_PACKED(struct                                \
          {                                               \
            typeof (_val1) val1;                          \
          }) *ed;                                         \
        ed = ELOG_DATA (&vlib_global_main.elog_main, e);  \
        ed->val1 = _val1;                                 \
      }                                                   \
  } while (0);

Definition at line 1036 of file nat.h.

◆ NAT_FQ_NELTS

#define NAT_FQ_NELTS 64

Definition at line 40 of file nat.h.

◆ NAT_INTERFACE_FLAG_IS_INSIDE

#define NAT_INTERFACE_FLAG_IS_INSIDE 1

Definition at line 219 of file nat.h.

◆ NAT_INTERFACE_FLAG_IS_OUTSIDE

#define NAT_INTERFACE_FLAG_IS_OUTSIDE 2

Definition at line 220 of file nat.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

i	NAT interface

Returns: 1 if inside interface

Definition at line 834 of file nat.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

i	NAT interface

Returns: 1 if outside interface

Definition at line 840 of file nat.h.

◆ nat_log_debug

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

Definition at line 897 of file nat.h.

◆ nat_log_err

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

Definition at line 889 of file nat.h.

◆ nat_log_info

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

Definition at line 895 of file nat.h.

◆ nat_log_notice

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

Definition at line 893 of file nat.h.

◆ nat_log_warn

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

Definition at line 891 of file nat.h.

◆ NAT_STATIC_MAPPING_FLAG_ADDR_ONLY

#define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY 1

Definition at line 223 of file nat.h.

◆ NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS

#define NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS 16

Definition at line 227 of file nat.h.

◆ NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT

#define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT 4

Definition at line 225 of file nat.h.

◆ NAT_STATIC_MAPPING_FLAG_LB

#define NAT_STATIC_MAPPING_FLAG_LB 8

Definition at line 226 of file nat.h.

◆ NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY

#define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY 2

Definition at line 224 of file nat.h.

◆ SNAT_FLAG_HAIRPINNING

#define SNAT_FLAG_HAIRPINNING (1 << 0)

Definition at line 43 of file nat.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

s	SNAT session

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

Definition at line 786 of file nat.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

s	SNAT session

Returns: 1 if SNAT session for unknown protocol otherwise 0

Definition at line 792 of file nat.h.

◆ SNAT_SESSION_FLAG_AFFINITY

#define SNAT_SESSION_FLAG_AFFINITY 64

Definition at line 215 of file nat.h.

◆ SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT

#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT 16

Definition at line 213 of file nat.h.

◆ SNAT_SESSION_FLAG_EXACT_ADDRESS

#define SNAT_SESSION_FLAG_EXACT_ADDRESS 128

Definition at line 216 of file nat.h.

◆ SNAT_SESSION_FLAG_FWD_BYPASS

#define SNAT_SESSION_FLAG_FWD_BYPASS 32

Definition at line 214 of file nat.h.

◆ SNAT_SESSION_FLAG_LOAD_BALANCING

#define SNAT_SESSION_FLAG_LOAD_BALANCING 4

Definition at line 211 of file nat.h.

◆ SNAT_SESSION_FLAG_STATIC_MAPPING

#define SNAT_SESSION_FLAG_STATIC_MAPPING 1

Definition at line 209 of file nat.h.

◆ SNAT_SESSION_FLAG_TWICE_NAT

#define SNAT_SESSION_FLAG_TWICE_NAT 8

Definition at line 212 of file nat.h.

◆ SNAT_SESSION_FLAG_UNKNOWN_PROTO

#define SNAT_SESSION_FLAG_UNKNOWN_PROTO 2

Definition at line 210 of file nat.h.

Typedef Documentation

◆ nat44_config_flags_t

typedef enum nat44_config_flags_t_ 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 502 of file nat.h.

◆ nat_log_level_t

typedef enum nat_log_level_t_ nat_log_level_t

◆ snat_get_worker_in2out_function_t

typedef u32() snat_get_worker_in2out_function_t(ip4_header_t *ip, u32 rx_fib_index, u8 is_output)

Definition at line 492 of file nat.h.

◆ snat_get_worker_out2in_function_t

typedef u32() snat_get_worker_out2in_function_t(vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u8 is_output)

Definition at line 496 of file nat.h.

◆ snat_icmp_match_function_t

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, ip4_address_t *addr, u16 *port, u32 *fib_index, nat_protocol_t *proto, void *d, void *e, u8 *dont_translate)

Definition at line 479 of file nat.h.

◆ snat_main_t

typedef struct snat_main_s snat_main_t

Enumeration Type Documentation

◆ lb_nat_type_t

enum lb_nat_type_t

Enumerator
NO_LB_NAT
LB_NAT
AFFINITY_LB_NAT

Definition at line 369 of file nat.h.

◆ nat44_config_flags_t_

enum nat44_config_flags_t_

Enumerator
foreach_nat44_config_flag

Definition at line 53 of file nat.h.

◆ nat44_handoff_error_t

enum nat44_handoff_error_t

Enumerator
NAT44_HANDOFF_N_ERROR

Definition at line 171 of file nat.h.

◆ nat_addr_and_port_alloc_alg_t

enum nat_addr_and_port_alloc_alg_t

Enumerator
foreach_nat_addr_and_port_alloc_alg

Definition at line 123 of file nat.h.

◆ nat_in2out_ed_error_t

enum nat_in2out_ed_error_t

Enumerator
NAT_IN2OUT_ED_N_ERROR

Definition at line 158 of file nat.h.

◆ nat_log_level_t_

enum nat_log_level_t_

Enumerator
foreach_nat_log_level

Definition at line 909 of file nat.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_OUT2IN_ED_HANDOFF
NAT_NEXT_IN2OUT_CLASSIFY
NAT_NEXT_OUT2IN_CLASSIFY
NAT_N_NEXT

Definition at line 81 of file nat.h.

◆ nat_out2in_ed_error_t

enum nat_out2in_ed_error_t

Enumerator
NAT_OUT2IN_ED_N_ERROR

Definition at line 190 of file nat.h.

◆ snat_session_state_t

enum snat_session_state_t

Enumerator
foreach_snat_session_state

Definition at line 143 of file nat.h.

◆ twice_nat_type_t

enum twice_nat_type_t

Enumerator
TWICE_NAT_DISABLED
TWICE_NAT
TWICE_NAT_SELF

Definition at line 359 of file nat.h.

Function Documentation

◆ CLIB_PACKED() [1/2]

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

◆ CLIB_PACKED() [2/2]

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;u32 flags;u32 per_user_index;u32 per_user_list_head_index;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 user_index;u32 per_vrf_sessions_index;} )

◆ expire_per_vrf_sessions()

void expire_per_vrf_sessions ( u32 fib_index )

Definition at line 1917 of file nat.c.

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◆ format_user_kvp()

u8* format_user_kvp	(	u8 *	s,
		va_list *	args
	)

Definition at line 222 of file nat.c.

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◆ icmp_in2out()

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,
		vlib_node_runtime_t *	node,
		u32	next0,
		u32	thread_index,
		void *	d,
		void *	e
	)

Definition at line 642 of file in2out.c.

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◆ icmp_match_in2out_ed()

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,
		ip4_address_t *	addr,
		u16 *	port,
		u32 *	fib_index,
		nat_protocol_t *	proto,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

Definition at line 646 of file in2out_ed.c.

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◆ icmp_match_in2out_fast()

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,
		ip4_address_t *	addr,
		u16 *	port,
		u32 *	fib_index,
		nat_protocol_t *	proto,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

Get address and port values to be used for ICMP packet translation.

Parameters

[in]	sm	NAT main
[in,out]	node	NAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[in,out]	ip0	ip header
[out]	p_proto	protocol used for matching
[out]	p_value	address and port after NAT translation
[out]	p_dont_translate	if packet should not be translated
	d	optional parameter
	e	optional parameter

Definition at line 572 of file in2out.c.

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◆ icmp_match_in2out_slow()

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,
		ip4_address_t *	addr,
		u16 *	port,
		u32 *	fib_index,
		nat_protocol_t *	proto,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

Get address and port values to be used for ICMP packet translation and create session if needed.

Parameters

[in,out]	sm	NAT main
[in,out]	node	NAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[in,out]	ip0	ip header
[out]	p_proto	protocol used for matching
[out]	p_value	address and port after NAT translation
[out]	p_dont_translate	if packet should not be translated
	d	optional parameter
	e	optional parameter

Definition at line 453 of file in2out.c.

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◆ icmp_match_out2in_ed()

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,
		ip4_address_t *	addr,
		u16 *	port,
		u32 *	fib_index,
		nat_protocol_t *	proto,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

Definition at line 543 of file out2in_ed.c.

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◆ icmp_match_out2in_fast()

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,
		ip4_address_t *	mapping_addr,
		u16 *	mapping_port,
		u32 *	mapping_fib_index,
		nat_protocol_t *	proto,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

Get address and port values to be used for ICMP packet translation.

Parameters

[in]	sm	NAT main
[in,out]	node	NAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[in,out]	ip0	ip header
[out]	p_proto	protocol used for matching
[out]	p_value	address and port after NAT translation
[out]	p_dont_translate	if packet should not be translated
	d	optional parameter
	e	optional parameter

Definition at line 459 of file out2in.c.

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◆ icmp_match_out2in_slow()

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,
		ip4_address_t *	addr,
		u16 *	port,
		u32 *	fib_index,
		nat_protocol_t *	proto,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

Get address and port values to be used for ICMP packet translation and create session if needed.

Parameters

[in,out]	sm	NAT main
[in,out]	node	NAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[in,out]	ip0	ip header
[out]	p_proto	protocol used for matching
[out]	p_value	address and port after NAT translation
[out]	p_dont_translate	if packet should not be translated
	d	optional parameter
	e	optional parameter

Definition at line 318 of file out2in.c.

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◆ icmp_out2in()

u32 icmp_out2in	(	snat_main_t *	sm,
		vlib_buffer_t *	b0,
		ip4_header_t *	ip0,
		icmp46_header_t *	icmp0,
		u32	sw_if_index0,
		u32	rx_fib_index0,
		vlib_node_runtime_t *	node,
		u32	next0,
		u32	thread_index,
		void *	d,
		void *	e
	)

Definition at line 519 of file out2in.c.

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◆ 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

addr	IPv4 address
is_add	1 = add, 0 = delete

Returns: 0 on success, non-zero value otherwise

Definition at line 3545 of file nat.c.

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◆ 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_addr	external IPv4 address
e_port	external port number
proto	L4 protocol
locals	list of local backends
is_add	1 = add, 0 = delete
twice_nat	twice-nat mode
out2in_only	if 1 rule match only out2in direction
tag	opaque string tag
affinity	0 = disabled, otherwise client IP affinity sticky time

Returns: 0 on success, non-zero value otherwise

Definition at line 1365 of file nat.c.

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◆ nat44_api_hookup()

clib_error_t* nat44_api_hookup ( vlib_main_t * vm )

Definition at line 1706 of file nat44_api.c.

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◆ nat44_db_free()

void nat44_db_free ( snat_main_per_thread_data_t * tsm )

Free NAT44 data.

Parameters

tsm	per thread data

Definition at line 4347 of file nat.c.

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◆ nat44_db_init()

void nat44_db_init ( snat_main_per_thread_data_t * tsm )

Initialize NAT44 data.

Parameters

tsm	per thread data

Definition at line 4288 of file nat.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

sm	snat global configuration data
addr	IPv4 address
port	L4 port number
proto	L4 protocol
vrf_id	VRF ID
is_in	1 = inside network address and port pair, 0 = outside

Returns: 0 on success, non-zero value otherwise

Definition at line 4660 of file nat.c.

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◆ nat44_del_session()

int nat44_del_session	(	snat_main_t *	sm,
		ip4_address_t *	addr,
		u16	port,
		nat_protocol_t	proto,
		u32	vrf_id,
		int	is_in
	)

Delete NAT44 session.

Parameters

addr	IPv4 address
port	L4 port number
proto	L4 protocol
vrf_id	VRF ID
is_in	1 = inside network address and port pair, 0 = outside

Returns: 0 on success, non-zero value otherwise

Definition at line 4622 of file nat.c.

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◆ nat44_ed_hairpinning_unknown_proto()

void nat44_ed_hairpinning_unknown_proto	(	snat_main_t *	sm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip
	)

Definition at line 412 of file nat44_hairpinning.c.

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◆ nat44_ei_user_del()

int nat44_ei_user_del	(	ip4_address_t *	addr,
		u32	fib_index
	)

Delete specific NAT44 EI user and his sessions.

Parameters

addr	IPv4 address
fib_index	FIB table index

Definition at line 328 of file nat.c.

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◆ nat44_i2o_ed_is_idle_session_cb()

int nat44_i2o_ed_is_idle_session_cb	(	clib_bihash_kv_16_8_t *	kv,
		void *	arg
	)

Definition at line 75 of file in2out_ed.c.

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◆ nat44_i2o_is_idle_session_cb()

int nat44_i2o_is_idle_session_cb	(	clib_bihash_kv_8_8_t *	kv,
		void *	arg
	)

Definition at line 188 of file in2out.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 1599 of file nat.c.

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◆ nat44_o2i_ed_is_idle_session_cb()

int nat44_o2i_ed_is_idle_session_cb	(	clib_bihash_kv_16_8_t *	kv,
		void *	arg
	)

Definition at line 98 of file out2in_ed.c.

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◆ nat44_o2i_is_idle_session_cb()

int nat44_o2i_is_idle_session_cb	(	clib_bihash_kv_8_8_t *	kv,
		void *	arg
	)

Definition at line 104 of file out2in.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 3009 of file nat.c.

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◆ nat44_plugin_enable()

int nat44_plugin_enable ( nat44_config_t c )

Enable NAT44 plugin.

Parameters

c	nat44_config_t

Returns: 0 on success, non-zero value otherwise

Definition at line 2843 of file nat.c.

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◆ nat44_sessions_clear()

void nat44_sessions_clear ( )

Free all NAT44 sessions.

Definition at line 4372 of file nat.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_limit	Session limit
vrf_id	VRF id

Returns: 0 on success, non-zero value otherwise

Definition at line 4253 of file nat.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_limit	Session limit
vrf_id	VRF id

Returns: 0 on success, non-zero value otherwise

Definition at line 4272 of file nat.c.

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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

sm	snat global configuration data
s	NAT session
thread_index	thread index
is_ha	is HA event

Definition at line 376 of file nat.c.

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◆ nat_ha_sadd_cb()

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
	)

Definition at line 3932 of file nat.c.

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◆ nat_ha_sadd_ed_cb()

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
	)

Definition at line 4071 of file nat.c.

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◆ nat_ha_sdel_cb()

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
	)

Definition at line 4021 of file nat.c.

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◆ nat_ha_sdel_ed_cb()

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
	)

Definition at line 4168 of file nat.c.

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◆ nat_ha_sref_cb()

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
	)

Definition at line 4050 of file nat.c.

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◆ nat_ha_sref_ed_cb()

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
	)

Definition at line 4197 of file nat.c.

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◆ nat_hairpinning_sm_unknown_proto()

void nat_hairpinning_sm_unknown_proto	(	snat_main_t *	sm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip
	)

Definition at line 385 of file nat44_hairpinning.c.

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◆ nat_session_alloc_or_recycle()

snat_session_t* nat_session_alloc_or_recycle	(	snat_main_t *	sm,
		snat_user_t *	u,
		u32	thread_index,
		f64	now
	)

Allocate new NAT session or recycle last used.

Parameters

sm	snat global configuration data
u	NAT user
thread_index	thread index
now	time now

Returns: session data structure on success otherwise zero value

Definition at line 574 of file nat.c.

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◆ nat_set_alloc_addr_and_port_default()

void nat_set_alloc_addr_and_port_default ( void )

Set address and port assignment algorithm to default/standard.

Definition at line 4721 of file nat.c.

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◆ nat_set_alloc_addr_and_port_mape()

void nat_set_alloc_addr_and_port_mape	(	u16	psid,
		u16	psid_offset,
		u16	psid_length
	)

Set address and port assignment algorithm for MAP-E CE.

Parameters

psid	Port Set Identifier value
psid_offset	number of offset bits
psid_length	length of PSID

Definition at line 4698 of file nat.c.

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◆ nat_set_alloc_addr_and_port_range()

void nat_set_alloc_addr_and_port_range	(	u16	start_port,
		u16	end_port
	)

Set address and port assignment algorithm for port range.

Parameters

start_port	beginning of the port range
end_port	end of the port range

Definition at line 4710 of file nat.c.

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◆ nat_user_get_or_create()

snat_user_t* nat_user_get_or_create	(	snat_main_t *	sm,
		ip4_address_t *	addr,
		u32	fib_index,
		u32	thread_index
	)

Find or create NAT user.

Parameters

sm	snat global configuration data
addr	IPv4 address
fib_index	FIB table index
thread_index	thread index

Returns: NAT user data structure on success otherwise zero value

Definition at line 514 of file nat.c.

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◆ 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

sm	snat global configuration data
addr	IPv4 address
vrf_id	VRF id of tenant, ~0 means independent of VRF
twice_nat	1 if twice NAT address

Returns: 0 on success, non-zero value otherwise

Definition at line 680 of file nat.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

addr	IPv4 address
plen	address prefix length
sw_if_index	software index of the outside interface
is_add	0 = delete, 1 = add.

Definition at line 651 of file nat.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_index	software index of the interface
is_del	1 = delete, 0 = add
twice_nat	1 = twice NAT address for external hosts

Returns: 0 on success, non-zero value otherwise

Definition at line 4554 of file nat.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_addr	local IPv4 address
e_addr	external IPv4 address
l_port	local port number
e_port	external port number
vrf_id	local VRF ID
addr_only	1 = 1:1NAT, 0 = 1:1NAPT
sw_if_index	use interface address as external IPv4 address
proto	L4 protocol
is_add	1 = add, 0 = delete
twice_nat	twice-nat mode
out2in_only	if 1 rule match only out2in direction
tag	opaque string tag
identity_nat	identity NAT
pool_addr	pool IPv4 address
exact	1 = exact pool address

Returns: 0 on success, non-zero value otherwise

Definition at line 920 of file nat.c.

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◆ snat_alloc_outside_address_and_port()

int snat_alloc_outside_address_and_port	(	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
	)

Alloc outside address and port.

Parameters

addresses	vector of outside addresses
fib_index	FIB table index
thread_index	thread index
port_per_thread	number of ports per thread
snat_thread_index	NAT thread index

Returns: 0 on success, non-zero value otherwise

Definition at line 3343 of file nat.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

sm	snat global configuration data
addr	IPv4 address
delete_sm	1 if delete static mapping using address
twice_nat	1 if twice NAT address

Returns: 0 on success, non-zero value otherwise

Definition at line 1750 of file nat.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

addresses	vector of outside addresses
thread_index	thread index
key	address, port and protocol

Definition at line 3108 of file nat.c.

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◆ snat_hairpinning()

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,
		int	do_trace
	)

Definition at line 97 of file nat44_hairpinning.c.

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◆ snat_icmp_hairpinning()

u32 snat_icmp_hairpinning	(	snat_main_t *	sm,
		vlib_buffer_t *	b0,
		ip4_header_t *	ip0,
		icmp46_header_t *	icmp0,
		int	is_ed
	)

Definition at line 240 of file nat44_hairpinning.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_index	software index of the interface
is_inside	1 = inside, 0 = outside
is_del	1 = delete, 0 = add

Returns: 0 on success, non-zero value otherwise

Definition at line 1976 of file nat.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_index	software index of the interface
is_inside	1 = inside, 0 = outside
is_del	1 = delete, 0 = add

Returns: 0 on success, non-zero value otherwise

Definition at line 2242 of file nat.c.

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◆ snat_set_workers()

int snat_set_workers ( uword * bitmap )

Set NAT plugin workers.

Parameters

bitmap NAT workers bitmap

Returns: 0 on success, non-zero value otherwise

Definition at line 2457 of file nat.c.

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◆ snat_static_mapping_match()

int snat_static_mapping_match	(	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

key	address and port to match
addr	external/local address of the matched mapping
port	port of the matched mapping
fib_index	fib index of the matched mapping
by_external	if 0 match by local address otherwise match by external address
is_addr_only	1 if matched mapping is address only
twice_nat	matched mapping is twice NAT type
lb	1 if matched mapping is load-balanced
ext_host_addr	external host address
is_identity_nat	1 if indentity mapping
out	if !=0 set to pointer of the mapping structure

Returns: 0 if match found otherwise 1.

Definition at line 3183 of file nat.c.

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◆ tcp_flags_is_init()

static bool tcp_flags_is_init ( u8 f )

inlinestatic

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

Parameters

t	TCP header

Returns: 1 if client initiating TCP connection

Definition at line 883 of file nat.h.

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Variable Documentation

◆ format_nat_addr_and_port_alloc_alg

format_function_t format_nat_addr_and_port_alloc_alg

Definition at line 778 of file nat.h.

◆ format_nat_protocol

format_function_t format_nat_protocol

Definition at line 777 of file nat.h.

◆ format_snat_key

format_function_t format_snat_key

Definition at line 775 of file nat.h.

◆ format_snat_session

format_function_t format_snat_session

Definition at line 774 of file nat.h.

◆ format_snat_static_map_to_resolve

format_function_t format_snat_static_map_to_resolve

Definition at line 773 of file nat.h.

◆ format_snat_static_mapping

format_function_t format_snat_static_mapping

Definition at line 772 of file nat.h.

◆ format_snat_user

format_function_t format_snat_user

Definition at line 771 of file nat.h.

◆ format_static_mapping_key

format_function_t format_static_mapping_key

Definition at line 776 of file nat.h.

◆ nat44_ed_in2out_node

vlib_node_registration_t nat44_ed_in2out_node

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_node)

Definition at line 1496 of file in2out_ed.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 1516 of file in2out_ed.c.

◆ nat44_ed_out2in_node

vlib_node_registration_t nat44_ed_out2in_node

(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_node)

Definition at line 1511 of file out2in_ed.c.

◆ nat_default_node

vlib_node_registration_t nat_default_node

(constructor) VLIB_REGISTER_NODE (nat_default_node)

Definition at line 4737 of file nat.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 1594 of file in2out_ed.c.

◆ nat_pre_out2in_node

vlib_node_registration_t nat_pre_out2in_node

(constructor) VLIB_REGISTER_NODE (nat_pre_out2in_node)

Definition at line 1591 of file out2in_ed.c.

◆ snat_in2out_node

vlib_node_registration_t snat_in2out_node

(constructor) VLIB_REGISTER_NODE (snat_in2out_node)

Definition at line 1642 of file in2out.c.

◆ snat_in2out_output_node

vlib_node_registration_t snat_in2out_output_node

(constructor) VLIB_REGISTER_NODE (snat_in2out_output_node)

Definition at line 1674 of file in2out.c.

◆ 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 294 of file nat44_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 274 of file nat44_handoff.c.

◆ snat_main

snat_main_t snat_main

Definition at line 39 of file nat.c.

◆ snat_out2in_node

vlib_node_registration_t snat_out2in_node

(constructor) VLIB_REGISTER_NODE (snat_out2in_node)

Definition at line 1374 of file out2in.c.

◆ 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 313 of file nat44_handoff.c.

◆ unformat_nat_protocol

unformat_function_t unformat_nat_protocol

Definition at line 780 of file nat.h.

Data Structures

Macros

Typedefs

Enumerations

Functions

Variables

Macro Definition Documentation

◆ foreach_nat44_config_flag

◆ foreach_nat44_handoff_error

◆ foreach_nat_addr_and_port_alloc_alg

◆ foreach_nat_counter

◆ foreach_nat_in2out_ed_error

◆ foreach_nat_log_level

◆ foreach_nat_out2in_ed_error

◆ foreach_snat_session_state

◆ is_addr_only_static_mapping

◆ is_affinity_sessions

◆ is_ed_session

◆ is_exact_address

◆ is_exact_address_session

◆ is_fwd_bypass_session

◆ is_identity_static_mapping

◆ is_lb_session

◆ is_lb_static_mapping

◆ is_out2in_only_static_mapping

◆ is_twice_nat_session

◆ nat44_is_ses_closed

◆ NAT44_SES_I2O_FIN

◆ NAT44_SES_I2O_FIN_ACK

◆ NAT44_SES_I2O_SYN

◆ NAT44_SES_O2I_FIN

◆ NAT44_SES_O2I_FIN_ACK

◆ NAT44_SES_O2I_SYN

◆ NAT44_SES_RST

◆ nat_elog

◆ nat_elog_addr

◆ nat_elog_debug

◆ nat_elog_debug_handoff

◆ nat_elog_debug_handoff_v2

◆ nat_elog_debug_X1

◆ nat_elog_err

◆ nat_elog_err_X1

◆ nat_elog_info

◆ nat_elog_info_X1

◆ nat_elog_notice

◆ nat_elog_notice_X1

◆ nat_elog_warn

◆ nat_elog_warn_X1

◆ nat_elog_X1

◆ NAT_FQ_NELTS

◆ NAT_INTERFACE_FLAG_IS_INSIDE

◆ NAT_INTERFACE_FLAG_IS_OUTSIDE

◆ nat_interface_is_inside

◆ nat_interface_is_outside

◆ nat_log_debug

◆ nat_log_err

◆ nat_log_info

◆ nat_log_notice

◆ nat_log_warn

◆ NAT_STATIC_MAPPING_FLAG_ADDR_ONLY

◆ NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS

◆ NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT

◆ NAT_STATIC_MAPPING_FLAG_LB

◆ NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY

◆ SNAT_FLAG_HAIRPINNING

◆ snat_is_session_static

◆ snat_is_unk_proto_session

◆ SNAT_SESSION_FLAG_AFFINITY

◆ SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT

◆ SNAT_SESSION_FLAG_EXACT_ADDRESS

◆ SNAT_SESSION_FLAG_FWD_BYPASS

◆ SNAT_SESSION_FLAG_LOAD_BALANCING

◆ SNAT_SESSION_FLAG_STATIC_MAPPING

◆ SNAT_SESSION_FLAG_TWICE_NAT

◆ SNAT_SESSION_FLAG_UNKNOWN_PROTO

Typedef Documentation

◆ nat44_config_flags_t

◆ nat_alloc_out_addr_and_port_function_t

◆ nat_log_level_t

◆ snat_get_worker_in2out_function_t