snat.c File Reference

Include dependency graph for snat.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)
	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	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_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, 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 SNAT static mapping. More...
int	snat_alloc_outside_address_and_port (snat_main_t *sm, u32 fib_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 *	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	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 943 of file snat.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 1144 of file snat.c.

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

Definition at line 1733 of file snat.c.

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

Definition at line 1615 of file snat.c.

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

Definition at line 1126 of file snat.c.

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

Definition at line 1634 of file snat.c.

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

Definition at line 1598 of file snat.c.

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

Definition at line 1711 of file snat.c.

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

Definition at line 1692 of file snat.c.

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

Definition at line 1652 of file snat.c.

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void increment_v4_address

(

ip4_address_t *

a

)

Definition at line 175 of file snat.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 162 of file snat.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 2350 of file snat.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 1257 of file snat.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 1763 of file snat.c.

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

Definition at line 128 of file snat.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 96 of file snat.c.

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

Definition at line 2043 of file snat.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 2101 of file snat.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 223 of file snat.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 184 of file snat.c.

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

Definition at line 891 of file snat.c.

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

static

Definition at line 1477 of file snat.c.

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

Definition at line 521 of file snat.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 2487 of file snat.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 2416 of file snat.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 2223 of file snat.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 2157 of file snat.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 2285 of file snat.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 1042 of file snat.c.

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

Definition at line 794 of file snat.c.

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static u32 snat_get_worker_in2out_cb ( ip4_header_t *  ip0, u32  rx_fib_index0  )

static

Definition at line 1387 of file snat.c.

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static u32 snat_get_worker_out2in_cb ( ip4_header_t *  ip0, u32  rx_fib_index0  )

static

Definition at line 1421 of file snat.c.

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static clib_error_t* snat_init ( vlib_main_t *  vm )

static

Definition at line 725 of file snat.c.

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

Definition at line 621 of file snat.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 1974 of file snat.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 1326 of file snat.c.

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int snat_set_workers

(

uword *

bitmap

)

Definition at line 695 of file snat.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 SNAT static mapping.

Parameters

sm	SNAT 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 835 of file snat.c.

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uword unformat_snat_protocol	(	unformat_input_t *	input,
		va_list *	args
	)

Definition at line 1112 of file snat.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
	)

Variable Documentation

vlib_cli_command_t add_address_command

static

Initial value:

= {
  .path = "snat add address",
  .short_help = "snat add addresses <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 1034 of file snat.c.

vlib_cli_command_t add_static_mapping_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (add_static_mapping_command)

Definition at line 1249 of file snat.c.

vlib_cli_command_t set_interface_snat_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (set_interface_snat_command)

Definition at line 1105 of file snat.c.

vlib_cli_command_t set_timeout_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (set_timeout_command)

Definition at line 2407 of file snat.c.

vlib_cli_command_t set_workers_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (set_workers_command)

Definition at line 1318 of file snat.c.

vlib_cli_command_t show_snat_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (show_snat_command)

Definition at line 1966 of file snat.c.

vlib_cli_command_t snat_add_interface_address_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (snat_add_interface_address_command)

Definition at line 2150 of file snat.c.

vlib_cli_command_t snat_det_close_sesion_out_command

static

Initial value:

= {
  .path = "snat deterministic close session out",
  .short_help = "snat 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 2479 of file snat.c.

vlib_cli_command_t snat_det_close_session_in_command

static

Initial value:

= {
  .path = "snat deterministic close session in",
  .short_help = "snat 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 2548 of file snat.c.

vlib_cli_command_t snat_det_forward_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (snat_det_forward_command)

Definition at line 2278 of file snat.c.

vlib_cli_command_t snat_det_map_command

static

Initial value:

= {
    .path = "snat deterministic add",
    .short_help = "snat 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 2216 of file snat.c.

vlib_cli_command_t snat_det_reverse_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (snat_det_reverse_command)

Definition at line 2343 of file snat.c.

vlib_cli_command_t snat_ipfix_logging_enable_disable_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (snat_ipfix_logging_enable_disable_command)

Definition at line 1380 of file snat.c.

snat_main_t snat_main

Definition at line 31 of file snat.c.