nat44_ed.c File Reference

Include dependency graph for nat44_ed.c:

Go to the source code of this file.

Macros
#define	skip_if_disabled()
#define	fail_if_enabled()
#define	fail_if_disabled()
#define	nat_validate_simple_counter(c, i)
#define	nat_init_simple_counter(c, n, sn)

Functions
static_always_inline void	nat_validate_interface_counters (snat_main_t *sm, u32 sw_if_index)
	VNET_FEATURE_INIT (nat_pre_in2out, static)
	VNET_FEATURE_INIT (nat_pre_out2in, static)
	VNET_FEATURE_INIT (snat_in2out_worker_handoff, static)
	VNET_FEATURE_INIT (snat_out2in_worker_handoff, static)
	VNET_FEATURE_INIT (ip4_snat_in2out, static)
	VNET_FEATURE_INIT (ip4_snat_out2in, static)
	VNET_FEATURE_INIT (ip4_nat44_ed_in2out, static)
	VNET_FEATURE_INIT (ip4_nat44_ed_out2in, static)
	VNET_FEATURE_INIT (ip4_nat44_ed_classify, static)
	VNET_FEATURE_INIT (ip4_nat_handoff_classify, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_fast, static)
	VNET_FEATURE_INIT (ip4_snat_out2in_fast, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_output, static)
	VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static)
	VNET_FEATURE_INIT (nat_pre_in2out_output, static)
	VNET_FEATURE_INIT (ip4_nat44_ed_in2out_output, static)
	VLIB_PLUGIN_REGISTER ()
static void	nat44_ed_db_init (u32 translations, u32 translation_buckets)
static void	nat44_ed_db_free ()
u32	nat_calc_bihash_buckets (u32 n_elts)
u8 *	format_session_kvp (u8 *s, va_list *args)
u8 *	format_static_mapping_kvp (u8 *s, va_list *args)
u8 *	format_ed_session_kvp (u8 *s, va_list *args)
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...
void	snat_add_del_addr_to_fib (ip4_address_t *addr, u8 p_len, u32 sw_if_index, int is_add)
	Add/del NAT address to FIB. More...
int	snat_add_address (snat_main_t *sm, ip4_address_t *addr, u32 vrf_id, u8 twice_nat)
	Add external address to NAT44 pool. More...
static int	is_snat_address_used_in_static_mapping (snat_main_t *sm, ip4_address_t addr)
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, nat_protocol_t proto, int addr_only, u8 *tag, int twice_nat, int out2in_only, int identity_nat, ip4_address_t pool_addr, int exact)
u32	get_thread_idx_by_port (u16 e_port)
void	nat_ed_static_mapping_del_sessions (snat_main_t *sm, snat_main_per_thread_data_t *tsm, ip4_address_t l_addr, u16 l_port, u8 protocol, u32 fib_index, int addr_only, ip4_address_t e_addr, u16 e_port)
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)
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	expire_per_vrf_sessions (u32 fib_index)
void	update_per_vrf_sessions_vec (u32 fib_index, int is_del)
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_set_workers (uword *bitmap)
	Set NAT plugin workers. More...
int	nat44_ed_set_frame_queue_nelts (u32 frame_queue_nelts)
static void	snat_update_outside_fib (ip4_main_t *im, uword opaque, u32 sw_if_index, u32 new_fib_index, u32 old_fib_index)
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 void	nat_ip4_add_del_addr_only_sm_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)
void	test_key_calc_split ()
static clib_error_t *	nat_ip_table_add_del (vnet_main_t *vnm, u32 table_id, u32 is_add)
	VNET_IP_TABLE_ADD_DEL_FUNCTION (nat_ip_table_add_del)
void	nat44_set_node_indexes (snat_main_t *sm, vlib_main_t *vm)
static clib_error_t *	nat_init (vlib_main_t *vm)
int	nat44_plugin_enable (nat44_config_t c)
	Enable NAT44 plugin. More...
void	nat44_addresses_free (snat_address_t **addresses)
int	nat44_plugin_disable ()
	Disable NAT44 plugin. More...
void	nat44_ed_forwarding_enable_disable (u8 is_enable)
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	nat_set_outside_address_and_port (snat_address_t *addresses, u32 thread_index, ip4_address_t addr, u16 port, nat_protocol_t protocol)
int	snat_static_mapping_match (vlib_main_t *vm, snat_main_t *sm, ip4_address_t match_addr, u16 match_port, u32 match_fib_index, nat_protocol_t match_protocol, ip4_address_t *mapping_addr, u16 *mapping_port, u32 *mapping_fib_index, u8 by_external, u8 *is_addr_only, twice_nat_type_t *twice_nat, lb_nat_type_t *lb, ip4_address_t *ext_host_addr, u8 *is_identity_nat, snat_static_mapping_t **out)
	Match NAT44 static mapping. More...
u32	nat44_ed_get_in2out_worker_index (vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u8 is_output)
u32	nat44_ed_get_out2in_worker_index (vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u8 is_output)
u32	nat44_get_max_session_limit ()
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...
static void	nat44_ed_worker_db_init (snat_main_per_thread_data_t *tsm, u32 translations, u32 translation_buckets)
static void	reinit_ed_flow_hash ()
static void	nat44_ed_worker_db_free (snat_main_per_thread_data_t *tsm)
void	nat44_ed_sessions_clear ()
int	snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del, u8 twice_nat)
	Add/delete NAT44 pool address from specific interface. More...
int	nat44_del_ed_session (snat_main_t *sm, ip4_address_t *addr, u16 port, ip4_address_t *eh_addr, u16 eh_port, u8 proto, u32 vrf_id, int is_in)
	Delete NAT44 endpoint-dependent session. More...
VLIB_NODE_FN()	nat_default_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
void	nat_6t_l3_l4_csum_calc (nat_6t_flow_t *f)
static_always_inline int	nat_6t_flow_icmp_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, nat_6t_flow_t *f)
static_always_inline void	nat_6t_flow_ip4_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, nat_6t_flow_t *f, nat_protocol_t proto, int is_icmp_inner_ip4)
nat_translation_error_e	nat_6t_flow_buf_translate (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, nat_6t_flow_t *f, nat_protocol_t proto, int is_output_feature)
u8 *	format_nat_6t (u8 *s, va_list *args)
u8 *	format_nat_ed_translation_error (u8 *s, va_list *args)
u8 *	format_nat_6t_flow (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...

Macro Definition Documentation

fail_if_disabled

#define fail_if_disabled

(

)

Value:

do                                                                          \
    {                                                                         \
      snat_main_t *sm = &snat_main;                                           \
      if (PREDICT_FALSE (!sm->enabled))                                       \
        {                                                                     \
          nat_log_err ("plugin disabled");                                    \
          return 1;                                                           \
        }                                                                     \
    }                                                                         \
  while (0)

Definition at line 67 of file nat44_ed.c.

fail_if_enabled

#define fail_if_enabled

(

)

Value:

do                                                                          \
    {                                                                         \
      snat_main_t *sm = &snat_main;                                           \
      if (PREDICT_FALSE (sm->enabled))                                        \
        {                                                                     \
          nat_log_err ("plugin enabled");                                     \
          return 1;                                                           \
        }                                                                     \
    }                                                                         \
  while (0)

Definition at line 55 of file nat44_ed.c.

nat_init_simple_counter

#define nat_init_simple_counter	(		c,
			n,
			sn
	)

Value:

do                                                                          \
    {                                                                         \
      c.name = n;                                                             \
      c.stat_segment_name = sn;                                               \
      nat_validate_simple_counter (c, 0);                                     \
    }                                                                         \
  while (0);

Definition at line 1975 of file nat44_ed.c.

nat_validate_simple_counter

#define nat_validate_simple_counter	(		c,
			i
	)

Value:

do                                                                          \
    {                                                                         \
      vlib_validate_simple_counter (&c, i);                                   \
      vlib_zero_simple_counter (&c, i);                                       \
    }                                                                         \
  while (0);

Definition at line 1967 of file nat44_ed.c.

skip_if_disabled

#define skip_if_disabled

(

)

Value:

do                                                                          \
    {                                                                         \
      snat_main_t *sm = &snat_main;                                           \
      if (PREDICT_FALSE (!sm->enabled))                                       \
        return;                                                               \
    }                                                                         \
  while (0)

Definition at line 46 of file nat44_ed.c.

Function Documentation

expire_per_vrf_sessions()

void expire_per_vrf_sessions

(

u32

fib_index

)

Definition at line 1340 of file nat44_ed.c.

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format_ed_session_kvp()

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

Definition at line 209 of file nat44_ed.c.

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format_nat_6t()

u8* format_nat_6t	(	u8 *	s,
		va_list *	args
	)

Definition at line 3444 of file nat44_ed.c.

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format_nat_6t_flow()

u8* format_nat_6t_flow	(	u8 *	s,
		va_list *	args
	)

Definition at line 3477 of file nat44_ed.c.

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format_nat_ed_translation_error()

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

Definition at line 3457 of file nat44_ed.c.

format_session_kvp()

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

Definition at line 186 of file nat44_ed.c.

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format_static_mapping_kvp()

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

Definition at line 198 of file nat44_ed.c.

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get_thread_idx_by_port()

u32 get_thread_idx_by_port

(

u16

e_port

)

Definition at line 426 of file nat44_ed.c.

is_snat_address_used_in_static_mapping()

static int is_snat_address_used_in_static_mapping ( snat_main_t *  sm, ip4_address_t  addr  )

static

Definition at line 383 of file nat44_ed.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 856 of file nat44_ed.c.

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nat44_addresses_free()

void nat44_addresses_free

(

snat_address_t **

addresses

)

Definition at line 2164 of file nat44_ed.c.

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nat44_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 3144 of file nat44_ed.c.

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nat44_ed_db_free()

static void nat44_ed_db_free ( )

static

Definition at line 2889 of file nat44_ed.c.

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nat44_ed_db_init()

static void nat44_ed_db_init ( u32  translations, u32  translation_buckets  )

static

Definition at line 2849 of file nat44_ed.c.

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nat44_ed_forwarding_enable_disable()

void nat44_ed_forwarding_enable_disable

(

u8

is_enable

)

Definition at line 2246 of file nat44_ed.c.

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nat44_ed_get_in2out_worker_index()

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

Definition at line 2503 of file nat44_ed.c.

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nat44_ed_get_out2in_worker_index()

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

Definition at line 2606 of file nat44_ed.c.

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nat44_ed_sessions_clear()

void nat44_ed_sessions_clear

(

)

Definition at line 2909 of file nat44_ed.c.

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nat44_ed_set_frame_queue_nelts()

int nat44_ed_set_frame_queue_nelts

(

u32

frame_queue_nelts

)

Definition at line 1785 of file nat44_ed.c.

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nat44_ed_worker_db_free()

static void nat44_ed_worker_db_free ( snat_main_per_thread_data_t *  tsm )

static

Definition at line 2881 of file nat44_ed.c.

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nat44_ed_worker_db_init()

static void nat44_ed_worker_db_init ( snat_main_per_thread_data_t *  tsm, u32  translations, u32  translation_buckets  )

static

Definition at line 2808 of file nat44_ed.c.

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nat44_get_max_session_limit()

u32 nat44_get_max_session_limit

(

)

Definition at line 2756 of file nat44_ed.c.

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nat44_lb_static_mapping_add_del_local()

int nat44_lb_static_mapping_add_del_local	(	ip4_address_t	e_addr,
		u16	e_port,
		ip4_address_t	l_addr,
		u16	l_port,
		nat_protocol_t	proto,
		u32	vrf_id,
		u8	probability,
		u8	is_add
	)

Definition at line 1084 of file nat44_ed.c.

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nat44_plugin_disable()

int nat44_plugin_disable

(

)

Disable NAT44 plugin.

Returns

0 on success, non-zero value otherwise

Definition at line 2179 of file nat44_ed.c.

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nat44_plugin_enable()

int nat44_plugin_enable

(

nat44_config_t

c

)

Enable NAT44 plugin.

Parameters

c	nat44_config_t

Returns

0 on success, non-zero value otherwise

Definition at line 2099 of file nat44_ed.c.

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nat44_set_node_indexes()

void nat44_set_node_indexes	(	snat_main_t *	sm,
		vlib_main_t *	vm
	)

Definition at line 1953 of file nat44_ed.c.

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nat44_set_session_limit()

int nat44_set_session_limit	(	u32	session_limit,
		u32	vrf_id
	)

Set NAT44 session limit (session limit, vrf id)

Parameters

session_limit	Session limit
vrf_id	VRF id

Returns

0 on success, non-zero value otherwise

Definition at line 2770 of file nat44_ed.c.

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nat44_update_session_limit()

int nat44_update_session_limit	(	u32	session_limit,
		u32	vrf_id
	)

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

Parameters

session_limit	Session limit
vrf_id	VRF id

Returns

0 on success, non-zero value otherwise

Definition at line 2789 of file nat44_ed.c.

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nat_6t_flow_buf_translate()

nat_translation_error_e nat_6t_flow_buf_translate	(	snat_main_t *	sm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		nat_6t_flow_t *	f,
		nat_protocol_t	proto,
		int	is_output_feature
	)

Definition at line 3424 of file nat44_ed.c.

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nat_6t_flow_icmp_translate()

static_always_inline int nat_6t_flow_icmp_translate	(	snat_main_t *	sm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		nat_6t_flow_t *	f
	)

Definition at line 3341 of file nat44_ed.c.

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nat_6t_flow_ip4_translate()

static_always_inline void nat_6t_flow_ip4_translate	(	snat_main_t *	sm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		nat_6t_flow_t *	f,
		nat_protocol_t	proto,
		int	is_icmp_inner_ip4
	)

Definition at line 3277 of file nat44_ed.c.

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nat_6t_l3_l4_csum_calc()

void nat_6t_l3_l4_csum_calc

(

nat_6t_flow_t *

f

)

Definition at line 3205 of file nat44_ed.c.

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nat_calc_bihash_buckets()

u32 nat_calc_bihash_buckets

(

u32

n_elts

)

Definition at line 122 of file lib.h.

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nat_default_node()

VLIB_NODE_FN() nat_default_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 3176 of file nat44_ed.c.

nat_ed_static_mapping_del_sessions()

void nat_ed_static_mapping_del_sessions	(	snat_main_t *	sm,
		snat_main_per_thread_data_t *	tsm,
		ip4_address_t	l_addr,
		u16	l_port,
		u8	protocol,
		u32	fib_index,
		int	addr_only,
		ip4_address_t	e_addr,
		u16	e_port
	)

Definition at line 440 of file nat44_ed.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 231 of file nat44_ed.c.

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nat_init()

static clib_error_t* nat_init ( vlib_main_t *  vm )

static

Definition at line 1998 of file nat44_ed.c.

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nat_ip4_add_del_addr_only_sm_cb()

static void nat_ip4_add_del_addr_only_sm_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 2930 of file nat44_ed.c.

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nat_ip_table_add_del()

static clib_error_t* nat_ip_table_add_del ( vnet_main_t *  vnm, u32  table_id, u32  is_add  )

static

Definition at line 1936 of file nat44_ed.c.

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nat_set_outside_address_and_port()

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

Definition at line 2317 of file nat44_ed.c.

nat_validate_interface_counters()

static_always_inline void nat_validate_interface_counters	(	snat_main_t *	sm,
		u32	sw_if_index
	)

Definition at line 1985 of file nat44_ed.c.

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reinit_ed_flow_hash()

static void reinit_ed_flow_hash ( )

static

Definition at line 2838 of file nat44_ed.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 320 of file nat44_ed.c.

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snat_add_del_addr_to_fib()

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

Add/del NAT address to FIB.

Add the external NAT address to the FIB as receive entries. This ensures that VPP will reply to ARP for this address and we don't need to enable proxy ARP on the outside interface.

Parameters

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 291 of file nat44_ed.c.

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snat_add_interface_address()

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

Add/delete NAT44 pool address from specific interface.

Parameters

sw_if_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 3076 of file nat44_ed.c.

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snat_add_static_mapping()

int snat_add_static_mapping	(	ip4_address_t	l_addr,
		ip4_address_t	e_addr,
		u16	l_port,
		u16	e_port,
		u32	vrf_id,
		int	addr_only,
		u32	sw_if_index,
		nat_protocol_t	proto,
		int	is_add,
		twice_nat_type_t	twice_nat,
		u8	out2in_only,
		u8 *	tag,
		u8	identity_nat,
		ip4_address_t	pool_addr,
		int	exact
	)

Add/delete NAT44 static mapping.

Parameters

l_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 484 of file nat44_ed.c.

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snat_add_static_mapping_when_resolved()

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, nat_protocol_t  proto, int  addr_only, u8 *  tag, int  twice_nat, int  out2in_only, int  identity_nat, ip4_address_t  pool_addr, int  exact  )

static

Definition at line 400 of file nat44_ed.c.

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snat_del_address()

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

Delete external address from NAT44 pool.

Parameters

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 1224 of file nat44_ed.c.

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snat_free_outside_address_and_port()

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

Free outside address and port pair.

Parameters

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

Definition at line 2280 of file nat44_ed.c.

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snat_interface_add_del()

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

Enable/disable NAT44 feature on the interface.

Parameters

sw_if_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 1397 of file nat44_ed.c.

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snat_interface_add_del_output_feature()

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

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

Parameters

sw_if_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 1595 of file nat44_ed.c.

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snat_ip4_add_del_interface_address_cb()

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 2998 of file nat44_ed.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 1759 of file nat44_ed.c.

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snat_static_mapping_match()

int snat_static_mapping_match	(	vlib_main_t *	vm,
		snat_main_t *	sm,
		ip4_address_t	match_addr,
		u16	match_port,
		u32	match_fib_index,
		nat_protocol_t	match_protocol,
		ip4_address_t *	mapping_addr,
		u16 *	mapping_port,
		u32 *	mapping_fib_index,
		u8	by_external,
		u8 *	is_addr_only,
		twice_nat_type_t *	twice_nat,
		lb_nat_type_t *	lb,
		ip4_address_t *	ext_host_addr,
		u8 *	is_identity_nat,
		snat_static_mapping_t **	out
	)

Match NAT44 static mapping.

Parameters

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 2354 of file nat44_ed.c.

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snat_update_outside_fib()

static void snat_update_outside_fib ( ip4_main_t *  im, uword  opaque, u32  sw_if_index, u32  new_fib_index, u32  old_fib_index  )

static

Definition at line 1794 of file nat44_ed.c.

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test_key_calc_split()

void test_key_calc_split

(

)

Definition at line 1884 of file nat44_ed.c.

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update_per_vrf_sessions_vec()

void update_per_vrf_sessions_vec	(	u32	fib_index,
		int	is_del
	)

Definition at line 1360 of file nat44_ed.c.

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VLIB_PLUGIN_REGISTER()

VLIB_PLUGIN_REGISTER

(

)

VNET_FEATURE_INIT() [1/16]

VNET_FEATURE_INIT	(	nat_pre_in2out	,
		static
	)

VNET_FEATURE_INIT() [2/16]

VNET_FEATURE_INIT	(	nat_pre_out2in	,
		static
	)

VNET_FEATURE_INIT() [3/16]

VNET_FEATURE_INIT	(	snat_in2out_worker_handoff	,
		static
	)

VNET_FEATURE_INIT() [4/16]

VNET_FEATURE_INIT	(	snat_out2in_worker_handoff	,
		static
	)

VNET_FEATURE_INIT() [5/16]

VNET_FEATURE_INIT	(	ip4_snat_in2out	,
		static
	)

VNET_FEATURE_INIT() [6/16]

VNET_FEATURE_INIT	(	ip4_snat_out2in	,
		static
	)

VNET_FEATURE_INIT() [7/16]

VNET_FEATURE_INIT	(	ip4_nat44_ed_in2out	,
		static
	)

VNET_FEATURE_INIT() [8/16]

VNET_FEATURE_INIT	(	ip4_nat44_ed_out2in	,
		static
	)

VNET_FEATURE_INIT() [9/16]

VNET_FEATURE_INIT	(	ip4_nat44_ed_classify	,
		static
	)

VNET_FEATURE_INIT() [10/16]

VNET_FEATURE_INIT	(	ip4_nat_handoff_classify	,
		static
	)

VNET_FEATURE_INIT() [11/16]

VNET_FEATURE_INIT	(	ip4_snat_in2out_fast	,
		static
	)

VNET_FEATURE_INIT() [12/16]

VNET_FEATURE_INIT	(	ip4_snat_out2in_fast	,
		static
	)

VNET_FEATURE_INIT() [13/16]

VNET_FEATURE_INIT	(	ip4_snat_in2out_output	,
		static
	)

VNET_FEATURE_INIT() [14/16]

VNET_FEATURE_INIT	(	ip4_snat_in2out_output_worker_handoff	,
		static
	)

VNET_FEATURE_INIT() [15/16]

VNET_FEATURE_INIT	(	nat_pre_in2out_output	,
		static
	)

VNET_FEATURE_INIT() [16/16]

VNET_FEATURE_INIT	(	ip4_nat44_ed_in2out_output	,
		static
	)

VNET_IP_TABLE_ADD_DEL_FUNCTION()

VNET_IP_TABLE_ADD_DEL_FUNCTION

(

nat_ip_table_add_del

)

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Variable Documentation

nat_default_node

vlib_node_registration_t nat_default_node

Initial value:

= {
  .name = "nat-default",
  .vector_size = sizeof (u32),
  .format_trace = 0,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = 0,
  .n_next_nodes = NAT_N_NEXT,
  .next_nodes = {
    [NAT_NEXT_DROP] = "error-drop",
    [NAT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
    [NAT_NEXT_IN2OUT_ED_FAST_PATH] = "nat44-ed-in2out",
    [NAT_NEXT_IN2OUT_ED_SLOW_PATH] = "nat44-ed-in2out-slowpath",
    [NAT_NEXT_IN2OUT_ED_OUTPUT_FAST_PATH] = "nat44-ed-in2out-output",
    [NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH] = "nat44-ed-in2out-output-slowpath",
    [NAT_NEXT_OUT2IN_ED_FAST_PATH] = "nat44-ed-out2in",
    [NAT_NEXT_OUT2IN_ED_SLOW_PATH] = "nat44-ed-out2in-slowpath",
    [NAT_NEXT_IN2OUT_CLASSIFY] = "nat44-in2out-worker-handoff",
    [NAT_NEXT_OUT2IN_CLASSIFY] = "nat44-out2in-worker-handoff",
  },
}

(constructor) VLIB_REGISTER_NODE (nat_default_node)

Definition at line 3183 of file nat44_ed.c.

snat_main

snat_main_t snat_main

Definition at line 41 of file nat44_ed.c.