det44_in2out.c File Reference

Deterministic NAT (CGN) inside to outside translation. More...

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Data Structures
struct	det44_in2out_trace_t

Macros
#define	foreach_det44_in2out_error

Enumerations
enum	det44_in2out_next_t { DET44_IN2OUT_NEXT_LOOKUP, DET44_IN2OUT_NEXT_DROP, DET44_IN2OUT_NEXT_ICMP_ERROR, DET44_IN2OUT_N_NEXT }
enum	det44_in2out_error_t { DET44_IN2OUT_N_ERROR }

Functions
static u8 *	format_det44_in2out_trace (u8 *s, va_list *args)
u32	icmp_match_in2out_det (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, void *d, void *e, u8 *dont_translate)
	Get address and port values to be used for ICMP packet translation and create session if needed. More...
u32	det44_icmp_in2out (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)
VLIB_NODE_FN()	det44_in2out_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)

Variables
static char *	det44_in2out_error_strings []
vlib_node_registration_t	det44_in2out_node
	(constructor) VLIB_REGISTER_NODE (det44_in2out_node) More...

Detailed Description

Deterministic NAT (CGN) inside to outside translation.

Definition in file det44_in2out.c.

Macro Definition Documentation

foreach_det44_in2out_error

#define foreach_det44_in2out_error

Value:

_(UNSUPPORTED_PROTOCOL, "Unsupported protocol")    \
_(NO_TRANSLATION, "No translation")                \
_(BAD_ICMP_TYPE, "unsupported ICMP type")          \
_(OUT_OF_PORTS, "Out of ports")                    \
_(IN2OUT_PACKETS, "Good in2out packets processed")

Definition at line 50 of file det44_in2out.c.

Enumeration Type Documentation

det44_in2out_error_t

enum det44_in2out_error_t

Enumerator
DET44_IN2OUT_N_ERROR

Definition at line 57 of file det44_in2out.c.

det44_in2out_next_t

enum det44_in2out_next_t

Enumerator
DET44_IN2OUT_NEXT_LOOKUP
DET44_IN2OUT_NEXT_DROP
DET44_IN2OUT_NEXT_ICMP_ERROR
DET44_IN2OUT_N_NEXT

Definition at line 35 of file det44_in2out.c.

Function Documentation

det44_icmp_in2out()

u32 det44_icmp_in2out	(	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
	)

Definition at line 255 of file det44_in2out.c.

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det44_in2out_node()

VLIB_NODE_FN() det44_in2out_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 402 of file det44_in2out.c.

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format_det44_in2out_trace()

static u8* format_det44_in2out_trace ( u8 *  s, va_list *  args  )

static

Definition at line 72 of file det44_in2out.c.

icmp_match_in2out_det()

u32 icmp_match_in2out_det	(	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,
		void *	d,
		void *	e,
		u8 *	dont_translate
	)

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

Parameters

[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 100 of file det44_in2out.c.

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Variable Documentation

det44_in2out_error_strings

char* det44_in2out_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_det44_in2out_error
 
}

Definition at line 65 of file det44_in2out.c.

det44_in2out_node

vlib_node_registration_t det44_in2out_node

Initial value:

= {
  .name = "det44-in2out",
  .vector_size = sizeof (u32),
  .format_trace = format_det44_in2out_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN(det44_in2out_error_strings),
  .error_strings = det44_in2out_error_strings,
  .runtime_data_bytes = sizeof (det44_runtime_t),
  .n_next_nodes = DET44_IN2OUT_N_NEXT,
  
  .next_nodes = {
    [DET44_IN2OUT_NEXT_DROP] = "error-drop",
    [DET44_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
    [DET44_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
  },
}

(constructor) VLIB_REGISTER_NODE (det44_in2out_node)

Definition at line 1015 of file det44_in2out.c.