nat.c File Reference

Include dependency graph for nat.c:

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Functions
	VNET_FEATURE_INIT (ip4_snat_in2out, static)
	VNET_FEATURE_INIT (ip4_snat_out2in, static)
	VNET_FEATURE_INIT (ip4_snat_det_in2out, static)
	VNET_FEATURE_INIT (ip4_snat_det_out2in, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static)
	VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_fast, static)
	VNET_FEATURE_INIT (ip4_snat_out2in_fast, static)
	VNET_FEATURE_INIT (ip4_snat_hairpin_dst, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_output, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static)
	VNET_FEATURE_INIT (ip4_snat_hairpin_src, static)
	VLIB_PLUGIN_REGISTER ()
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	snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id)
static int	is_snat_address_used_in_static_mapping (snat_main_t *sm, ip4_address_t addr)
void	increment_v4_address (ip4_address_t *a)
static void	snat_add_static_mapping_when_resolved (snat_main_t *sm, ip4_address_t l_addr, u16 l_port, u32 sw_if_index, u16 e_port, u32 vrf_id, snat_protocol_t proto, int addr_only, int is_add)
int	snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, u16 l_port, u16 e_port, u32 vrf_id, int addr_only, u32 sw_if_index, snat_protocol_t proto, int is_add)
	Add static mapping. More...
int	nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port, snat_protocol_t proto, u32 vrf_id, nat44_lb_addr_port_t *locals, u8 is_add)
int	snat_del_address (snat_main_t *sm, ip4_address_t addr, u8 delete_sm)
int	snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
int	snat_interface_add_del_output_feature (u32 sw_if_index, u8 is_inside, int is_del)
int	snat_set_workers (uword *bitmap)
static void	snat_ip4_add_del_interface_address_cb (ip4_main_t *im, uword opaque, u32 sw_if_index, ip4_address_t *address, u32 address_length, u32 if_address_index, u32 is_delete)
static clib_error_t *	snat_init (vlib_main_t *vm)
void	snat_free_outside_address_and_port (snat_main_t *sm, u32 thread_index, snat_session_key_t *k, u32 address_index)
int	snat_static_mapping_match (snat_main_t *sm, snat_session_key_t match, snat_session_key_t *mapping, u8 by_external, u8 *is_addr_only)
	Match NAT44 static mapping. More...
static_always_inline u16	snat_random_port (snat_main_t *sm, u16 min, u16 max)
int	snat_alloc_outside_address_and_port (snat_main_t *sm, u32 fib_index, u32 thread_index, snat_session_key_t *k, u32 *address_indexp)
static clib_error_t *	add_address_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_feature_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
uword	unformat_snat_protocol (unformat_input_t *input, va_list *args)
u8 *	format_snat_protocol (u8 *s, va_list *args)
static clib_error_t *	add_static_mapping_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	add_lb_static_mapping_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	set_workers_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_ipfix_logging_enable_disable_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static u32	snat_get_worker_in2out_cb (ip4_header_t *ip0, u32 rx_fib_index0)
static u32	snat_get_worker_out2in_cb (ip4_header_t *ip0, u32 rx_fib_index0)
static clib_error_t *	snat_config (vlib_main_t *vm, unformat_input_t *input)
u8 *	format_snat_session_state (u8 *s, va_list *args)
u8 *	format_snat_key (u8 *s, va_list *args)
u8 *	format_snat_session (u8 *s, va_list *args)
u8 *	format_snat_user (u8 *s, va_list *args)
u8 *	format_snat_static_mapping (u8 *s, va_list *args)
u8 *	format_snat_static_map_to_resolve (u8 *s, va_list *args)
u8 *	format_det_map_ses (u8 *s, va_list *args)
static clib_error_t *	show_snat_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
int	snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del)
static clib_error_t *	snat_add_interface_address_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_det_map_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_det_forward_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_det_reverse_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	set_timeout_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_det_close_session_out_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	snat_det_close_session_in_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)

Variables
snat_main_t	snat_main
static vlib_cli_command_t	add_address_command
	(constructor) VLIB_CLI_COMMAND (add_address_command) More...
static vlib_cli_command_t	set_interface_snat_command
	(constructor) VLIB_CLI_COMMAND (set_interface_snat_command) More...
static vlib_cli_command_t	add_static_mapping_command
	(constructor) VLIB_CLI_COMMAND (add_static_mapping_command) More...
static vlib_cli_command_t	add_lb_static_mapping_command
	(constructor) VLIB_CLI_COMMAND (add_lb_static_mapping_command) More...
static vlib_cli_command_t	set_workers_command
	(constructor) VLIB_CLI_COMMAND (set_workers_command) More...
static vlib_cli_command_t	snat_ipfix_logging_enable_disable_command
	(constructor) VLIB_CLI_COMMAND (snat_ipfix_logging_enable_disable_command) More...
static vlib_cli_command_t	show_snat_command
	(constructor) VLIB_CLI_COMMAND (show_snat_command) More...
static vlib_cli_command_t	snat_add_interface_address_command
	(constructor) VLIB_CLI_COMMAND (snat_add_interface_address_command) More...
static vlib_cli_command_t	snat_det_map_command
	(constructor) VLIB_CLI_COMMAND (snat_det_map_command) More...
static vlib_cli_command_t	snat_det_forward_command
	(constructor) VLIB_CLI_COMMAND (snat_det_forward_command) More...
static vlib_cli_command_t	snat_det_reverse_command
	(constructor) VLIB_CLI_COMMAND (snat_det_reverse_command) More...
static vlib_cli_command_t	set_timeout_command
	(constructor) VLIB_CLI_COMMAND (set_timeout_command) More...
static vlib_cli_command_t	snat_det_close_sesion_out_command
	(constructor) VLIB_CLI_COMMAND (snat_det_close_sesion_out_command) More...
static vlib_cli_command_t	snat_det_close_session_in_command
	(constructor) VLIB_CLI_COMMAND (snat_det_close_session_in_command) More...

Function Documentation

static clib_error_t* add_address_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1392 of file nat.c.

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static clib_error_t* add_lb_static_mapping_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1757 of file nat.c.

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static clib_error_t* add_static_mapping_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1644 of file nat.c.

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

Definition at line 2401 of file nat.c.

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

Definition at line 2260 of file nat.c.

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

Definition at line 1625 of file nat.c.

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

Definition at line 2271 of file nat.c.

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

Definition at line 2243 of file nat.c.

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

Definition at line 2379 of file nat.c.

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

Definition at line 2346 of file nat.c.

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

Definition at line 2306 of file nat.c.

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void increment_v4_address

(

ip4_address_t *

a

)

Definition at line 214 of file nat.c.

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static int is_snat_address_used_in_static_mapping ( snat_main_t *  sm, ip4_address_t  addr  )

static

Definition at line 201 of file nat.c.

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int nat44_add_del_lb_static_mapping	(	ip4_address_t	e_addr,
		u16	e_port,
		snat_protocol_t	proto,
		u32	vrf_id,
		nat44_lb_addr_port_t *	locals,
		u8	is_add
	)

Definition at line 582 of file nat.c.

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static clib_error_t* set_timeout_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 3026 of file nat.c.

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static clib_error_t* set_workers_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1852 of file nat.c.

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static clib_error_t* show_snat_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2431 of file nat.c.

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void snat_add_address	(	snat_main_t *	sm,
		ip4_address_t *	addr,
		u32	vrf_id
	)

Definition at line 151 of file nat.c.

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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	Interface.
is_add	If 0 delete, otherwise add.

Definition at line 119 of file nat.c.

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int snat_add_interface_address	(	snat_main_t *	sm,
		u32	sw_if_index,
		int	is_del
	)

Definition at line 2719 of file nat.c.

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static clib_error_t* snat_add_interface_address_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2777 of file nat.c.

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int snat_add_static_mapping	(	ip4_address_t	l_addr,
		ip4_address_t	e_addr,
		u16	l_port,
		u16	e_port,
		u32	vrf_id,
		int	addr_only,
		u32	sw_if_index,
		snat_protocol_t	proto,
		int	is_add
	)

Add static mapping.

Create static mapping between local addr+port and external addr+port.

Parameters

l_addr	Local IPv4 address.
e_addr	External IPv4 address.
l_port	Local port number.
e_port	External port number.
vrf_id	VRF ID.
addr_only	If 0 address port and pair mapping, otherwise address only.
sw_if_index	External port instead of specific IP address.
is_add	If 0 delete static mapping, otherwise add.

Returns

Definition at line 262 of file nat.c.

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static void snat_add_static_mapping_when_resolved ( snat_main_t *  sm, ip4_address_t  l_addr, u16  l_port, u32  sw_if_index, u16  e_port, u32  vrf_id, snat_protocol_t  proto, int  addr_only, int  is_add  )

static

Definition at line 223 of file nat.c.

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int snat_alloc_outside_address_and_port	(	snat_main_t *	sm,
		u32	fib_index,
		u32	thread_index,
		snat_session_key_t *	k,
		u32 *	address_indexp
	)

Definition at line 1339 of file nat.c.

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static clib_error_t* snat_config ( vlib_main_t *  vm, unformat_input_t *  input  )

static

Definition at line 2115 of file nat.c.

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

Definition at line 804 of file nat.c.

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static clib_error_t* snat_det_close_session_in_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 3163 of file nat.c.

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static clib_error_t* snat_det_close_session_out_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 3092 of file nat.c.

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static clib_error_t* snat_det_forward_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2899 of file nat.c.

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static clib_error_t* snat_det_map_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2833 of file nat.c.

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static clib_error_t* snat_det_reverse_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 2961 of file nat.c.

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static clib_error_t* snat_feature_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1491 of file nat.c.

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void snat_free_outside_address_and_port	(	snat_main_t *	sm,
		u32	thread_index,
		snat_session_key_t *	k,
		u32	address_index
	)

Definition at line 1214 of file nat.c.

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static u32 snat_get_worker_in2out_cb ( ip4_header_t *  ip0, u32  rx_fib_index0  )

static

Definition at line 1982 of file nat.c.

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static u32 snat_get_worker_out2in_cb ( ip4_header_t *  ip0, u32  rx_fib_index0  )

static

Definition at line 2001 of file nat.c.

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static clib_error_t* snat_init ( vlib_main_t *  vm )

static

Definition at line 1137 of file nat.c.

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

Definition at line 943 of file nat.c.

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

Definition at line 1017 of file nat.c.

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static void snat_ip4_add_del_interface_address_cb ( ip4_main_t *  im, uword  opaque, u32  sw_if_index, ip4_address_t *  address, u32  address_length, u32  if_address_index, u32  is_delete  )

static

Definition at line 2650 of file nat.c.

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static clib_error_t* snat_ipfix_logging_enable_disable_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 1921 of file nat.c.

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static_always_inline u16 snat_random_port	(	snat_main_t *	sm,
		u16	min,
		u16	max
	)

Definition at line 1333 of file nat.c.

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int snat_set_workers

(

uword *

bitmap

)

Definition at line 1102 of file nat.c.

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int snat_static_mapping_match	(	snat_main_t *	sm,
		snat_session_key_t	match,
		snat_session_key_t *	mapping,
		u8	by_external,
		u8 *	is_addr_only
	)

Match NAT44 static mapping.

Parameters

sm	NAT main.
match	Address and port to match.
mapping	External or local address and port of the matched mapping.
by_external	If 0 match by local address otherwise match by external address.
is_addr_only	If matched mapping is address only

Returns

0 if match found otherwise 1.

Definition at line 1257 of file nat.c.

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uword unformat_snat_protocol	(	unformat_input_t *	input,
		va_list *	args
	)

Definition at line 1611 of file nat.c.

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VLIB_PLUGIN_REGISTER

(

)

VNET_FEATURE_INIT	(	ip4_snat_in2out	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_out2in	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_det_in2out	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_det_out2in	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_in2out_worker_handoff	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_out2in_worker_handoff	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_in2out_fast	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_out2in_fast	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_hairpin_dst	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_in2out_output	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_in2out_output_worker_handoff	,
		static
	)

VNET_FEATURE_INIT	(	ip4_snat_hairpin_src	,
		static
	)

Variable Documentation

vlib_cli_command_t add_address_command

static

Initial value:

= {
  .path = "nat44 add address",
  .short_help = "nat44 add address <ip4-range-start> [- <ip4-range-end>] "
                "[tenant-vrf <vrf-id>] [del]",
  .function = add_address_command_fn,
}

(constructor) VLIB_CLI_COMMAND (add_address_command)

Definition at line 1483 of file nat.c.

vlib_cli_command_t add_lb_static_mapping_command

static

Initial value:

= {
  .path = "nat44 add load-balancing static mapping",
  .function = add_lb_static_mapping_command_fn,
  .short_help =
    "nat44 add load-balancing static mapping protocol tcp|udp external <addr>:<port> local <addr>:<port> probability <n> [vrf <table-id>] [del]",
}

(constructor) VLIB_CLI_COMMAND (add_lb_static_mapping_command)

Definition at line 1844 of file nat.c.

vlib_cli_command_t add_static_mapping_command

static

Initial value:

= {
  .path = "nat44 add static mapping",
  .function = add_static_mapping_command_fn,
  .short_help =
    "nat44 add static mapping tcp|udp|icmp local <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]",
}

(constructor) VLIB_CLI_COMMAND (add_static_mapping_command)

Definition at line 1749 of file nat.c.

vlib_cli_command_t set_interface_snat_command

static

Initial value:

= {
  .path = "set interface nat44",
  .function = snat_feature_command_fn,
  .short_help = "set interface nat44 in <intfc> out <intfc> [output-feature] "
                "[del]",
}

(constructor) VLIB_CLI_COMMAND (set_interface_snat_command)

Definition at line 1603 of file nat.c.

vlib_cli_command_t set_timeout_command

static

Initial value:

= {
  .path = "set nat44 deterministic timeout",
  .function = set_timeout_command_fn,
  .short_help =
    "set nat44 deterministic timeout [udp <sec> | tcp-established <sec> "
    "tcp-transitory <sec> | icmp <sec> | reset]",
}

(constructor) VLIB_CLI_COMMAND (set_timeout_command)

Definition at line 3083 of file nat.c.

vlib_cli_command_t set_workers_command

static

Initial value:

= {
  .path = "set nat workers",
  .function = set_workers_command_fn,
  .short_help =
    "set nat workers <workers-list>",
}

(constructor) VLIB_CLI_COMMAND (set_workers_command)

Definition at line 1913 of file nat.c.

vlib_cli_command_t show_snat_command

static

Initial value:

= {
    .path = "show nat44",
    .short_help = "show nat44",
    .function = show_snat_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_snat_command)

Definition at line 2642 of file nat.c.

vlib_cli_command_t snat_add_interface_address_command

static

Initial value:

= {
    .path = "nat44 add interface address",
    .short_help = "nat44 add interface address <interface> [del]",
    .function = snat_add_interface_address_command_fn,
}

(constructor) VLIB_CLI_COMMAND (snat_add_interface_address_command)

Definition at line 2826 of file nat.c.

vlib_cli_command_t snat_det_close_sesion_out_command

static

Initial value:

= {
  .path = "nat44 deterministic close session out",
  .short_help = "nat44 deterministic close session out "
                "<out_addr>:<out_port> <ext_addr>:<ext_port>",
  .function = snat_det_close_session_out_fn,
}

(constructor) VLIB_CLI_COMMAND (snat_det_close_sesion_out_command)

Definition at line 3155 of file nat.c.

vlib_cli_command_t snat_det_close_session_in_command

static

Initial value:

= {
  .path = "nat44 deterministic close session in",
  .short_help = "nat44 deterministic close session in "
                "<in_addr>:<in_port> <ext_addr>:<ext_port>",
  .function = snat_det_close_session_in_fn,
}

(constructor) VLIB_CLI_COMMAND (snat_det_close_session_in_command)

Definition at line 3224 of file nat.c.

vlib_cli_command_t snat_det_forward_command

static

Initial value:

= {
    .path = "nat44 deterministic forward",
    .short_help = "nat44 deterministic forward <addr>",
    .function = snat_det_forward_command_fn,
}

(constructor) VLIB_CLI_COMMAND (snat_det_forward_command)

Definition at line 2954 of file nat.c.

vlib_cli_command_t snat_det_map_command

static

Initial value:

= {
    .path = "nat44 deterministic add",
    .short_help = "nat44 deterministic add in <addr>/<plen> out <addr>/<plen> [del]",
    .function = snat_det_map_command_fn,
}

(constructor) VLIB_CLI_COMMAND (snat_det_map_command)

Definition at line 2892 of file nat.c.

vlib_cli_command_t snat_det_reverse_command

static

Initial value:

= {
    .path = "nat44 deterministic reverse",
    .short_help = "nat44 deterministic reverse <addr>:<port>",
    .function = snat_det_reverse_command_fn,
}

(constructor) VLIB_CLI_COMMAND (snat_det_reverse_command)

Definition at line 3019 of file nat.c.

vlib_cli_command_t snat_ipfix_logging_enable_disable_command

static

Initial value:

= {
  .path = "nat ipfix logging",
  .function = snat_ipfix_logging_enable_disable_command_fn,
  .short_help = "nat ipfix logging [domain <domain-id>] [src-port <port>] [disable]",
}

(constructor) VLIB_CLI_COMMAND (snat_ipfix_logging_enable_disable_command)

Definition at line 1975 of file nat.c.

snat_main_t snat_main

Definition at line 31 of file nat.c.