out2in.c File Reference

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Data Structures
struct	snat_out2in_trace_t
struct	snat_out2in_worker_handoff_trace_t

Macros
#define	foreach_snat_out2in_error

Enumerations
enum	snat_out2in_error_t { SNAT_OUT2IN_N_ERROR }
enum	snat_out2in_next_t { SNAT_OUT2IN_NEXT_DROP, SNAT_OUT2IN_NEXT_LOOKUP, SNAT_OUT2IN_NEXT_ICMP_ERROR, SNAT_OUT2IN_N_NEXT }

Functions
static u8 *	format_snat_out2in_trace (u8 *s, va_list *args)
static u8 *	format_snat_out2in_fast_trace (u8 *s, va_list *args)
static u8 *	format_snat_out2in_worker_handoff_trace (u8 *s, va_list *args)
static snat_session_t *	create_session_for_static_mapping (snat_main_t *sm, vlib_buffer_t *b0, snat_session_key_t in2out, snat_session_key_t out2in, vlib_node_runtime_t *node, u32 thread_index)
	Create session for static mapping. More...
static_always_inline snat_out2in_error_t	icmp_get_key (ip4_header_t *ip0, snat_session_key_t *p_key0)
u32	icmp_match_out2in_slow (snat_main_t *sm, vlib_node_runtime_t *node, u32 thread_index, vlib_buffer_t *b0, u8 *p_proto, snat_session_key_t *p_value, u8 *p_dont_translate, void *d, void *e)
	Get address and port values to be used for packet SNAT 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, u8 *p_proto, snat_session_key_t *p_value, u8 *p_dont_translate, void *d, void *e)
	Get address and port values to be used for packet SNAT translation. More...
static 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)
static u32	icmp_out2in_slow_path (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, f64 now, u32 thread_index, snat_session_t **p_s0)
static void	snat_out2in_unknown_proto (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index)
static uword	snat_out2in_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_node, snat_out2in_node_fn)
static uword	snat_det_out2in_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_det_out2in_node, snat_det_out2in_node_fn)
u32	icmp_match_out2in_det (snat_main_t *sm, vlib_node_runtime_t *node, u32 thread_index, vlib_buffer_t *b0, u8 *p_proto, snat_session_key_t *p_value, u8 *p_dont_translate, void *d, void *e)
	Get address and port values to be used for packet SNAT translation and create session if needed. More...
static uword	snat_out2in_worker_handoff_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_worker_handoff_node, snat_out2in_worker_handoff_fn)
static uword	snat_out2in_fast_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_fast_node, snat_out2in_fast_node_fn)

Variables
vlib_node_registration_t	snat_out2in_node
	(constructor) VLIB_REGISTER_NODE (snat_out2in_node) More...
vlib_node_registration_t	snat_out2in_fast_node
	(constructor) VLIB_REGISTER_NODE (snat_out2in_fast_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	snat_det_out2in_node
	(constructor) VLIB_REGISTER_NODE (snat_det_out2in_node) More...
static char *	snat_out2in_error_strings []

Macro Definition Documentation

#define foreach_snat_out2in_error

Value:

_(UNSUPPORTED_PROTOCOL, "Unsupported protocol")         \
_(OUT2IN_PACKETS, "Good out2in packets processed")      \
_(BAD_ICMP_TYPE, "unsupported ICMP type")               \
_(NO_TRANSLATION, "No translation")

Definition at line 86 of file out2in.c.

Enumeration Type Documentation

enum snat_out2in_error_t

Enumerator
SNAT_OUT2IN_N_ERROR

Definition at line 92 of file out2in.c.

enum snat_out2in_next_t

Enumerator
SNAT_OUT2IN_NEXT_DROP
SNAT_OUT2IN_NEXT_LOOKUP
SNAT_OUT2IN_NEXT_ICMP_ERROR
SNAT_OUT2IN_N_NEXT

Definition at line 105 of file out2in.c.

Function Documentation

static snat_session_t* create_session_for_static_mapping ( snat_main_t *  sm, vlib_buffer_t *  b0, snat_session_key_t  in2out, snat_session_key_t  out2in, vlib_node_runtime_t *  node, u32  thread_index  )

inlinestatic

Create session for static mapping.

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

Parameters

sm	SNAT main.
b0	Vlib buffer.
in2out	In2out SNAT session key.
out2in	Out2in SNAT session key.
node	Vlib node.

Returns

SNAT session if successfully created otherwise 0.

Definition at line 127 of file out2in.c.

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static u8* format_snat_out2in_fast_trace ( u8 *  s, va_list *  args  )

static

Definition at line 56 of file out2in.c.

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static u8* format_snat_out2in_trace ( u8 *  s, va_list *  args  )

static

Definition at line 45 of file out2in.c.

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static u8* format_snat_out2in_worker_handoff_trace ( u8 *  s, va_list *  args  )

static

Definition at line 67 of file out2in.c.

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static_always_inline snat_out2in_error_t icmp_get_key	(	ip4_header_t *	ip0,
		snat_session_key_t *	p_key0
	)

Definition at line 230 of file out2in.c.

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u32 icmp_match_out2in_det	(	snat_main_t *	sm,
		vlib_node_runtime_t *	node,
		u32	thread_index,
		vlib_buffer_t *	b0,
		u8 *	p_proto,
		snat_session_key_t *	p_value,
		u8 *	p_dont_translate,
		void *	d,
		void *	e
	)

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

Parameters

[in,out]	sm	SNAT main
[in,out]	node	SNAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[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 1702 of file out2in.c.

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u32 icmp_match_out2in_fast	(	snat_main_t *	sm,
		vlib_node_runtime_t *	node,
		u32	thread_index,
		vlib_buffer_t *	b0,
		u8 *	p_proto,
		snat_session_key_t *	p_value,
		u8 *	p_dont_translate,
		void *	d,
		void *	e
	)

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

Parameters

[in]	sm	SNAT main
[in,out]	node	SNAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[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 398 of file out2in.c.

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u32 icmp_match_out2in_slow	(	snat_main_t *	sm,
		vlib_node_runtime_t *	node,
		u32	thread_index,
		vlib_buffer_t *	b0,
		u8 *	p_proto,
		snat_session_key_t *	p_value,
		u8 *	p_dont_translate,
		void *	d,
		void *	e
	)

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

Parameters

[in,out]	sm	SNAT main
[in,out]	node	SNAT node runtime
[in]	thread_index	thread index
[in,out]	b0	buffer containing packet to be translated
[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 288 of file out2in.c.

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static 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  )

inlinestatic

Definition at line 458 of file out2in.c.

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static u32 icmp_out2in_slow_path ( 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, f64  now, u32  thread_index, snat_session_t **  p_s0  )

inlinestatic

Definition at line 581 of file out2in.c.

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static uword snat_det_out2in_node_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1205 of file out2in.c.

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static uword snat_out2in_fast_node_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1992 of file out2in.c.

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static uword snat_out2in_node_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 646 of file out2in.c.

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static void snat_out2in_unknown_proto ( snat_main_t *  sm, vlib_buffer_t *  b, ip4_header_t *  ip, u32  rx_fib_index  )

static

Definition at line 615 of file out2in.c.

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static uword snat_out2in_worker_handoff_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1832 of file out2in.c.

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VLIB_NODE_FUNCTION_MULTIARCH	(	snat_out2in_node	,
		snat_out2in_node_fn
	)

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VLIB_NODE_FUNCTION_MULTIARCH	(	snat_det_out2in_node	,
		snat_det_out2in_node_fn
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	snat_out2in_worker_handoff_node	,
		snat_out2in_worker_handoff_fn
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	snat_out2in_fast_node	,
		snat_out2in_fast_node_fn
	)

Variable Documentation

vlib_node_registration_t snat_det_out2in_node

Initial value:

= {
  .function = snat_det_out2in_node_fn,
  .name = "snat-det-out2in",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_out2in_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = ARRAY_LEN(snat_out2in_error_strings),
  .error_strings = snat_out2in_error_strings,

  .runtime_data_bytes = sizeof (snat_runtime_t),

  .n_next_nodes = SNAT_OUT2IN_N_NEXT,

  
  .next_nodes = {
    [SNAT_OUT2IN_NEXT_DROP] = "error-drop",
    [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_det_out2in_node)

Definition at line 84 of file out2in.c.

char* snat_out2in_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_snat_out2in_error

}

Definition at line 99 of file out2in.c.

vlib_node_registration_t snat_out2in_fast_node

Initial value:

= {
  .function = snat_out2in_fast_node_fn,
  .name = "snat-out2in-fast",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_out2in_fast_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_errors = ARRAY_LEN(snat_out2in_error_strings),
  .error_strings = snat_out2in_error_strings,

  .runtime_data_bytes = sizeof (snat_runtime_t),
  
  .n_next_nodes = SNAT_OUT2IN_N_NEXT,

  
  .next_nodes = {
    [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [SNAT_OUT2IN_NEXT_DROP] = "error-drop",
    [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_out2in_fast_node)

Definition at line 82 of file out2in.c.

vlib_node_registration_t snat_out2in_node

Initial value:

= {
  .function = snat_out2in_node_fn,
  .name = "snat-out2in",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_out2in_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_errors = ARRAY_LEN(snat_out2in_error_strings),
  .error_strings = snat_out2in_error_strings,

  .runtime_data_bytes = sizeof (snat_runtime_t),
  
  .n_next_nodes = SNAT_OUT2IN_N_NEXT,

  
  .next_nodes = {
    [SNAT_OUT2IN_NEXT_DROP] = "error-drop",
    [SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_out2in_node)

Definition at line 81 of file out2in.c.

vlib_node_registration_t snat_out2in_worker_handoff_node

Initial value:

= {
  .function = snat_out2in_worker_handoff_fn,
  .name = "snat-out2in-worker-handoff",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_out2in_worker_handoff_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_next_nodes = 1,

  .next_nodes = {
    [0] = "error-drop",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node)

Definition at line 83 of file out2in.c.