in2out.c File Reference

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Data Structures
struct	snat_in2out_trace_t
struct	snat_in2out_worker_handoff_trace_t

Macros
#define	foreach_snat_in2out_error

Enumerations
enum	snat_in2out_error_t { SNAT_IN2OUT_N_ERROR }
enum	snat_in2out_next_t { SNAT_IN2OUT_NEXT_LOOKUP, SNAT_IN2OUT_NEXT_DROP, SNAT_IN2OUT_NEXT_SLOW_PATH, SNAT_IN2OUT_N_NEXT }

Functions
static u8 *	format_snat_in2out_trace (u8 *s, va_list *args)
static u8 *	format_snat_in2out_fast_trace (u8 *s, va_list *args)
static u8 *	format_snat_in2out_worker_handoff_trace (u8 *s, va_list *args)
static u32	slow_path (snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0, u32 rx_fib_index0, snat_session_key_t *key0, snat_session_t **sessionp, vlib_node_runtime_t *node, u32 next0, u32 cpu_index)
static u32	icmp_in2out_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 cpu_index)
static void	snat_hairpinning (snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0, udp_header_t *udp0, tcp_header_t *tcp0, u32 proto0)
	Hairpinning. More...
static uword	snat_in2out_node_fn_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_slow_path)
static uword	snat_in2out_fast_path_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_node, snat_in2out_fast_path_fn)
static uword	snat_in2out_slow_path_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_slowpath_node, snat_in2out_slow_path_fn)
static uword	snat_in2out_worker_handoff_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_worker_handoff_node, snat_in2out_worker_handoff_fn)
static u32	icmp_in2out_static_map (snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0, icmp46_header_t *icmp0, u32 sw_if_index0, vlib_node_runtime_t *node, u32 next0, u32 rx_fib_index0)
static uword	snat_in2out_fast_static_map_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_fast_node, snat_in2out_fast_static_map_fn)

Variables
vlib_node_registration_t	snat_in2out_node
	(constructor) VLIB_REGISTER_NODE (snat_in2out_node) More...
vlib_node_registration_t	snat_in2out_slowpath_node
	(constructor) VLIB_REGISTER_NODE (snat_in2out_slowpath_node) More...
vlib_node_registration_t	snat_in2out_fast_node
	(constructor) VLIB_REGISTER_NODE (snat_in2out_fast_node) More...
vlib_node_registration_t	snat_in2out_worker_handoff_node
	(constructor) VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node) More...
static char *	snat_in2out_error_strings []

Macro Definition Documentation

#define foreach_snat_in2out_error

Value:

_(UNSUPPORTED_PROTOCOL, "Unsupported protocol")         \
_(IN2OUT_PACKETS, "Good in2out packets processed")      \
_(OUT_OF_PORTS, "Out of ports")                         \
_(BAD_OUTSIDE_FIB, "Outside VRF ID not found")          \
_(BAD_ICMP_TYPE, "icmp type not echo-request")          \
_(NO_TRANSLATION, "No translation")

Definition at line 89 of file in2out.c.

Enumeration Type Documentation

enum snat_in2out_error_t

Enumerator
SNAT_IN2OUT_N_ERROR

Definition at line 97 of file in2out.c.

enum snat_in2out_next_t

Enumerator
SNAT_IN2OUT_NEXT_LOOKUP
SNAT_IN2OUT_NEXT_DROP
SNAT_IN2OUT_NEXT_SLOW_PATH
SNAT_IN2OUT_N_NEXT

Definition at line 110 of file in2out.c.

Function Documentation

static u8* format_snat_in2out_fast_trace ( u8 *  s, va_list *  args  )

static

Definition at line 58 of file in2out.c.

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static u8* format_snat_in2out_trace ( u8 *  s, va_list *  args  )

static

Definition at line 43 of file in2out.c.

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static u8* format_snat_in2out_worker_handoff_trace ( u8 *  s, va_list *  args  )

static

Definition at line 70 of file in2out.c.

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static u32 icmp_in2out_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  cpu_index  )

inlinestatic

Definition at line 308 of file in2out.c.

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static u32 icmp_in2out_static_map ( snat_main_t *  sm, vlib_buffer_t *  b0, ip4_header_t *  ip0, icmp46_header_t *  icmp0, u32  sw_if_index0, vlib_node_runtime_t *  node, u32  next0, u32  rx_fib_index0  )

inlinestatic

Definition at line 1321 of file in2out.c.

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static u32 slow_path ( snat_main_t *  sm, vlib_buffer_t *  b0, ip4_header_t *  ip0, u32  rx_fib_index0, snat_session_key_t *  key0, snat_session_t **  sessionp, vlib_node_runtime_t *  node, u32  next0, u32  cpu_index  )

static

Definition at line 117 of file in2out.c.

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static void snat_hairpinning ( snat_main_t *  sm, vlib_buffer_t *  b0, ip4_header_t *  ip0, udp_header_t *  udp0, tcp_header_t *  tcp0, u32  proto0  )

inlinestatic

Hairpinning.

Hairpinning allows two endpoints on the internal side of the NAT to communicate even if they only use each other's external IP addresses and ports.

Parameters

sm	SNAT main.
b0	Vlib buffer.
ip0	IP header.
udp0	UDP header.
tcp0	TCP header.
proto0	SNAT protocol.

Definition at line 423 of file in2out.c.

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static uword snat_in2out_fast_path_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1079 of file in2out.c.

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static uword snat_in2out_fast_static_map_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1392 of file in2out.c.

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static uword snat_in2out_node_fn_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, int  is_slow_path  )

inlinestatic

Definition at line 511 of file in2out.c.

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static uword snat_in2out_slow_path_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1111 of file in2out.c.

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static uword snat_in2out_worker_handoff_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1143 of file in2out.c.

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VLIB_NODE_FUNCTION_MULTIARCH	(	snat_in2out_node	,
		snat_in2out_fast_path_fn
	)

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VLIB_NODE_FUNCTION_MULTIARCH	(	snat_in2out_slowpath_node	,
		snat_in2out_slow_path_fn
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	snat_in2out_worker_handoff_node	,
		snat_in2out_worker_handoff_fn
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	snat_in2out_fast_node	,
		snat_in2out_fast_static_map_fn
	)

Variable Documentation

char* snat_in2out_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_snat_in2out_error

}

Definition at line 104 of file in2out.c.

vlib_node_registration_t snat_in2out_fast_node

Initial value:

= {
  .function = snat_in2out_fast_static_map_fn,
  .name = "snat-in2out-fast",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_in2out_fast_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_errors = ARRAY_LEN(snat_in2out_error_strings),
  .error_strings = snat_in2out_error_strings,

  .runtime_data_bytes = sizeof (snat_runtime_t),
  
  .n_next_nodes = SNAT_IN2OUT_N_NEXT,

  
  .next_nodes = {
    [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
    [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-slowpath",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_in2out_fast_node)

Definition at line 86 of file in2out.c.

vlib_node_registration_t snat_in2out_node

Initial value:

= {
  .function = snat_in2out_fast_path_fn,
  .name = "snat-in2out",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_in2out_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_errors = ARRAY_LEN(snat_in2out_error_strings),
  .error_strings = snat_in2out_error_strings,

  .runtime_data_bytes = sizeof (snat_runtime_t),
  
  .n_next_nodes = SNAT_IN2OUT_N_NEXT,

  
  .next_nodes = {
    [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
    [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-slowpath",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_in2out_node)

Definition at line 84 of file in2out.c.

vlib_node_registration_t snat_in2out_slowpath_node

Initial value:

= {
  .function = snat_in2out_slow_path_fn,
  .name = "snat-in2out-slowpath",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_in2out_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_errors = ARRAY_LEN(snat_in2out_error_strings),
  .error_strings = snat_in2out_error_strings,

  .runtime_data_bytes = sizeof (snat_runtime_t),
  
  .n_next_nodes = SNAT_IN2OUT_N_NEXT,

  
  .next_nodes = {
    [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
    [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-slowpath",
  },
}

(constructor) VLIB_REGISTER_NODE (snat_in2out_slowpath_node)

Definition at line 85 of file in2out.c.

vlib_node_registration_t snat_in2out_worker_handoff_node

Initial value:

= {
  .function = snat_in2out_worker_handoff_fn,
  .name = "snat-in2out-worker-handoff",
  .vector_size = sizeof (u32),
  .format_trace = format_snat_in2out_worker_handoff_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  
  .n_next_nodes = 1,

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

(constructor) VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node)

Definition at line 87 of file in2out.c.