NAT44 EI outside to inside network translation. More...

Include dependency graph for nat44_ei_out2in.c:

Data Structures
struct	nat44_ei_out2in_trace_t

Macros
#define	foreach_nat44_ei_out2in_error

Enumerations
enum	nat44_ei_out2in_error_t { NAT44_EI_OUT2IN_N_ERROR }

enum	nat44_ei_out2in_next_t { NAT44_EI_OUT2IN_NEXT_DROP, NAT44_EI_OUT2IN_NEXT_LOOKUP, NAT44_EI_OUT2IN_NEXT_ICMP_ERROR, NAT44_EI_OUT2IN_N_NEXT }

Functions
static u8 *	format_nat44_ei_out2in_trace (u8 s, va_list args)

static u8 *	format_nat44_ei_out2in_fast_trace (u8 s, va_list args)

int	nat44_o2i_is_idle_session_cb (clib_bihash_kv_8_8_t kv, void arg)

static nat44_ei_session_t *	create_session_for_static_mapping (nat44_ei_main_t nm, vlib_buffer_t b0, ip4_address_t i2o_addr, u16 i2o_port, u32 i2o_fib_index, ip4_address_t o2i_addr, u16 o2i_port, u32 o2i_fib_index, nat_protocol_t proto, vlib_node_runtime_t *node, u32 thread_index, f64 now)
	Create session for static mapping. More...

static_always_inline nat44_ei_out2in_error_t	icmp_get_key (vlib_buffer_t b, ip4_header_t ip0, ip4_address_t addr, u16 port, nat_protocol_t *nat_proto)

u32	nat44_ei_icmp_match_out2in_slow (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, nat44_ei_session_t p_s0, u8 dont_translate)
	Get address and port values to be used for ICMP packet translation and create session if needed. More...

u32	nat44_ei_icmp_match_out2in_fast (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, nat44_ei_session_t p_s0, u8 dont_translate)

u32	nat44_ei_icmp_out2in (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, nat44_ei_session_t **p_s0)

static u32	nat44_ei_icmp_out2in_slow_path (nat44_ei_main_t nm, 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, f64 now, u32 thread_index, nat44_ei_session_t *p_s0)

static int	nat_out2in_sm_unknown_proto (nat44_ei_main_t nm, vlib_buffer_t b, ip4_header_t *ip, u32 rx_fib_index)

	vlib_get_buffers (vm, from, b, n_left_from)

	while (n_left_from >=2)

	while (n_left_from > 0)

	vlib_buffer_enqueue_to_next (vm, node, from,(u16 *) nexts, frame->n_vectors)

Variables
static char *	nat44_ei_out2in_error_strings []

vlib_main_t *	vm

vlib_main_t vlib_node_runtime_t *	node

vlib_main_t vlib_node_runtime_t vlib_frame_t *	frame

nat44_ei_main_t *	nm = &nat44_ei_main

f64	now = vlib_time_now (vm)

u32	thread_index = vm->thread_index

nat44_ei_main_per_thread_data_t *	tnm = &nm->per_thread_data[thread_index]

	from = vlib_frame_vector_args (frame)

	n_left_from = frame->n_vectors

vlib_buffer_t *	bufs [VLIB_FRAME_SIZE]

vlib_buffer_t **	b = bufs

u16	nexts [VLIB_FRAME_SIZE]

u16 *	next = nexts

return frame	n_vectors

vlib_node_registration_t	nat44_ei_out2in_node
	(constructor) VLIB_REGISTER_NODE (nat44_ei_out2in_node) More...

vlib_node_registration_t	nat44_ei_out2in_fast_node
	(constructor) VLIB_REGISTER_NODE (nat44_ei_out2in_fast_node) More...

Detailed Description

NAT44 EI outside to inside network translation.

Definition in file nat44_ei_out2in.c.

Macro Definition Documentation

◆ foreach_nat44_ei_out2in_error

#define foreach_nat44_ei_out2in_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")                      \
  _ (CANNOT_CREATE_USER, "cannot create NAT user")

Definition at line 71 of file nat44_ei_out2in.c.

Enumeration Type Documentation

◆ nat44_ei_out2in_error_t

enum nat44_ei_out2in_error_t

Enumerator
NAT44_EI_OUT2IN_N_ERROR

Definition at line 79 of file nat44_ei_out2in.c.

◆ nat44_ei_out2in_next_t

enum nat44_ei_out2in_next_t

Enumerator
NAT44_EI_OUT2IN_NEXT_DROP
NAT44_EI_OUT2IN_NEXT_LOOKUP
NAT44_EI_OUT2IN_NEXT_ICMP_ERROR
NAT44_EI_OUT2IN_N_NEXT

Definition at line 93 of file nat44_ei_out2in.c.

Function Documentation

◆ create_session_for_static_mapping()

static nat44_ei_session_t* create_session_for_static_mapping	(	nat44_ei_main_t *	nm,
		vlib_buffer_t *	b0,
		ip4_address_t	i2o_addr,
		u16	i2o_port,
		u32	i2o_fib_index,
		ip4_address_t	o2i_addr,
		u16	o2i_port,
		u32	o2i_fib_index,
		nat_protocol_t	proto,
		vlib_node_runtime_t *	node,
		u32	thread_index,
		f64	now
	)

inlinestatic

Create session for static mapping.

Create NAT session initiated by host from external network with static mapping.

Parameters

nm	NAT main.
b0	Vlib buffer.
in2out	In2out NAT44 session key.
out2in	Out2in NAT44 session key.
node	Vlib node.

Returns: NAT44_EI session if successfully created otherwise 0.

Definition at line 171 of file nat44_ei_out2in.c.

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◆ format_nat44_ei_out2in_fast_trace()

static u8* format_nat44_ei_out2in_fast_trace	(	u8 *	s,
		va_list *	args
	)

static

Definition at line 60 of file nat44_ei_out2in.c.

◆ format_nat44_ei_out2in_trace()

static u8* format_nat44_ei_out2in_trace	(	u8 *	s,
		va_list *	args
	)

static

Definition at line 46 of file nat44_ei_out2in.c.

◆ icmp_get_key()

static_always_inline nat44_ei_out2in_error_t icmp_get_key	(	vlib_buffer_t *	b,
		ip4_header_t *	ip0,
		ip4_address_t *	addr,
		u16 *	port,
		nat_protocol_t *	nat_proto
	)

Definition at line 257 of file nat44_ei_out2in.c.

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◆ nat44_ei_icmp_match_out2in_fast()

u32 nat44_ei_icmp_match_out2in_fast	(	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,
		nat44_ei_session_t **	p_s0,
		u8 *	dont_translate
	)

Definition at line 442 of file nat44_ei_out2in.c.

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◆ nat44_ei_icmp_match_out2in_slow()

u32 nat44_ei_icmp_match_out2in_slow	(	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,
		nat44_ei_session_t **	p_s0,
		u8 *	dont_translate
	)

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

Parameters

[in,out]	nm	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 316 of file nat44_ei_out2in.c.

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◆ nat44_ei_icmp_out2in()

u32 nat44_ei_icmp_out2in	(	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,
		nat44_ei_session_t **	p_s0
	)

Definition at line 510 of file nat44_ei_out2in.c.

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◆ nat44_ei_icmp_out2in_slow_path()

static u32 nat44_ei_icmp_out2in_slow_path	(	nat44_ei_main_t *	nm,
		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,
		f64	now,
		u32	thread_index,
		nat44_ei_session_t **	p_s0
	)

inlinestatic

Definition at line 658 of file nat44_ei_out2in.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 103 of file nat44_ei_out2in.c.

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◆ nat_out2in_sm_unknown_proto()

static int nat_out2in_sm_unknown_proto	(	nat44_ei_main_t *	nm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		u32	rx_fib_index
	)

static

Definition at line 681 of file nat44_ei_out2in.c.

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◆ vlib_buffer_enqueue_to_next()

vlib_buffer_enqueue_to_next	(	vm	,
		node	,
		from	,
		(u16 *)	nexts,
		frame->	n_vectors
	)

◆ vlib_get_buffers()

vlib_get_buffers	(	vm	,
		from	,
		b	,
		n_left_from
	)

◆ while() [1/2]

while	(	n_left_from	,
		0
	)

Definition at line 1130 of file nat44_ei_out2in.c.

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◆ while() [2/2]

while ( n_left_from >= 2 )

Definition at line 721 of file nat44_ei_out2in.c.

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Variable Documentation

◆ b

vlib_buffer_t ** b = bufs

Definition at line 717 of file nat44_ei_out2in.c.

◆ bufs

vlib_buffer_t * bufs

Definition at line 717 of file nat44_ei_out2in.c.

◆ frame

vlib_main_t vlib_node_runtime_t vlib_frame_t* frame

Initial value:

{

u32 n_left_from, *from

Definition at line 707 of file nat44_ei_out2in.c.

◆ from

from = vlib_frame_vector_args (frame)

Definition at line 714 of file nat44_ei_out2in.c.

◆ n_left_from

n_left_from = frame->n_vectors

Definition at line 715 of file nat44_ei_out2in.c.

◆ n_vectors

return frame n_vectors

Definition at line 1341 of file nat44_ei_out2in.c.

◆ nat44_ei_out2in_error_strings

char* nat44_ei_out2in_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_nat44_ei_out2in_error
 
}

Definition at line 87 of file nat44_ei_out2in.c.

◆ nat44_ei_out2in_fast_node

vlib_node_registration_t nat44_ei_out2in_fast_node

Initial value:

= {
  .name = "nat44-ei-out2in-fast",
  .vector_size = sizeof (u32),
  .format_trace = format_nat44_ei_out2in_fast_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
 
  .n_errors = ARRAY_LEN(nat44_ei_out2in_error_strings),
  .error_strings = nat44_ei_out2in_error_strings,
 
  .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
 
  .n_next_nodes = NAT44_EI_OUT2IN_N_NEXT,
 
  
  .next_nodes = {
    [NAT44_EI_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [NAT44_EI_OUT2IN_NEXT_DROP] = "error-drop",
    [NAT44_EI_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
  },
}

(constructor) VLIB_REGISTER_NODE (nat44_ei_out2in_fast_node)

Definition at line 1528 of file nat44_ei_out2in.c.

◆ nat44_ei_out2in_node

vlib_node_registration_t nat44_ei_out2in_node

Initial value:

= {
  .name = "nat44-ei-out2in",
  .vector_size = sizeof (u32),
  .format_trace = format_nat44_ei_out2in_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
 
  .n_errors = ARRAY_LEN(nat44_ei_out2in_error_strings),
  .error_strings = nat44_ei_out2in_error_strings,
 
  .runtime_data_bytes = sizeof (nat44_ei_runtime_t),
 
  .n_next_nodes = NAT44_EI_OUT2IN_N_NEXT,
 
  
  .next_nodes = {
    [NAT44_EI_OUT2IN_NEXT_DROP] = "error-drop",
    [NAT44_EI_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [NAT44_EI_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
  },
}

(constructor) VLIB_REGISTER_NODE (nat44_ei_out2in_node)

Definition at line 1345 of file nat44_ei_out2in.c.

◆ next

u16 * next = nexts

Definition at line 718 of file nat44_ei_out2in.c.

◆ nexts

u16 nexts

Definition at line 718 of file nat44_ei_out2in.c.

◆ nm

nat44_ei_main_t* nm = &nat44_ei_main

Definition at line 709 of file nat44_ei_out2in.c.

◆ node

vlib_main_t vlib_node_runtime_t* node

Definition at line 706 of file nat44_ei_out2in.c.

◆ now

f64 now = vlib_time_now (vm)

Definition at line 710 of file nat44_ei_out2in.c.

◆ thread_index

u32 thread_index = vm->thread_index

Definition at line 711 of file nat44_ei_out2in.c.

◆ tnm

nat44_ei_main_per_thread_data_t* tnm = &nm->per_thread_data[thread_index]

Definition at line 712 of file nat44_ei_out2in.c.

◆ vm

vlib_main_t* vm

Definition at line 706 of file nat44_ei_out2in.c.

Data Structures

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ foreach_nat44_ei_out2in_error

Enumeration Type Documentation

◆ nat44_ei_out2in_error_t

◆ nat44_ei_out2in_next_t

Function Documentation

◆ create_session_for_static_mapping()

◆ format_nat44_ei_out2in_fast_trace()

◆ format_nat44_ei_out2in_trace()

◆ icmp_get_key()

◆ nat44_ei_icmp_match_out2in_fast()

◆ nat44_ei_icmp_match_out2in_slow()

◆ nat44_ei_icmp_out2in()

◆ nat44_ei_icmp_out2in_slow_path()

◆ nat44_o2i_is_idle_session_cb()

◆ nat_out2in_sm_unknown_proto()

◆ vlib_buffer_enqueue_to_next()

◆ vlib_get_buffers()

◆ while() [1/2]

◆ while() [2/2]

Variable Documentation

◆ b

◆ bufs

◆ frame

◆ from

◆ n_left_from

◆ n_vectors

◆ nat44_ei_out2in_error_strings

◆ nat44_ei_out2in_fast_node

◆ nat44_ei_out2in_node

◆ next

◆ nexts

◆ nm

◆ node

◆ now

◆ thread_index

◆ tnm

◆ vm