nat44_ed_in2out.c File Reference

NAT44 endpoint-dependent inside to outside network translation. More...

Include dependency graph for nat44_ed_in2out.c:

Go to the source code of this file.

Data Structures
struct	nat_in2out_ed_trace_t

Macros
#define	ED_PORT_ALLOC_ATTEMPTS   (10)

Functions
static u8 *	format_nat_in2out_ed_trace (u8 *s, va_list *args)
static int	snat_not_translate_fast (snat_main_t *sm, vlib_node_runtime_t *node, u32 sw_if_index0, ip4_header_t *ip0, u32 proto0, u32 rx_fib_index0)
	Check if packet should be translated. More...
static int	nat_ed_alloc_addr_and_port_with_snat_address (snat_main_t *sm, u32 nat_proto, u32 thread_index, snat_address_t *a, u16 port_per_thread, u32 snat_thread_index, snat_session_t *s, ip4_address_t *outside_addr, u16 *outside_port)
static int	nat_ed_alloc_addr_and_port (snat_main_t *sm, u32 rx_fib_index, u32 nat_proto, u32 thread_index, ip4_address_t s_addr, u16 port_per_thread, u32 snat_thread_index, snat_session_t *s, ip4_address_t *outside_addr, u16 *outside_port)
static_always_inline u32	nat_outside_fib_index_lookup (snat_main_t *sm, ip4_address_t addr)
static_always_inline int	nat44_ed_external_sm_lookup (snat_main_t *sm, ip4_address_t match_addr, u16 match_port, nat_protocol_t match_protocol, u32 match_fib_index, ip4_address_t *daddr, u16 *dport)
static u32	slow_path_ed (vlib_main_t *vm, snat_main_t *sm, vlib_buffer_t *b, ip4_address_t l_addr, ip4_address_t r_addr, u16 l_port, u16 r_port, u8 proto, u32 rx_fib_index, snat_session_t **sessionp, vlib_node_runtime_t *node, u32 next, u32 thread_index, f64 now)
static_always_inline int	nat44_ed_not_translate (vlib_main_t *vm, snat_main_t *sm, vlib_node_runtime_t *node, u32 sw_if_index, vlib_buffer_t *b, ip4_header_t *ip, u32 proto, u32 rx_fib_index, u32 thread_index)
static_always_inline int	nat_not_translate_output_feature_fwd (snat_main_t *sm, ip4_header_t *ip, u32 thread_index, f64 now, vlib_main_t *vm, vlib_buffer_t *b)
static_always_inline int	nat44_ed_not_translate_output_feature (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u16 src_port, u16 dst_port, u32 thread_index, u32 rx_sw_if_index, u32 tx_sw_if_index, f64 now, int is_multi_worker)
static u32	icmp_in2out_ed_slow_path (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, icmp46_header_t *icmp, u32 sw_if_index, u32 rx_fib_index, vlib_node_runtime_t *node, u32 next, f64 now, u32 thread_index, nat_protocol_t nat_proto, snat_session_t **s_p, int is_multi_worker)
static snat_session_t *	nat44_ed_in2out_slowpath_unknown_proto (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u32 thread_index, f64 now, vlib_main_t *vm, vlib_node_runtime_t *node)
static uword	nat44_ed_in2out_fast_path_node_fn_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_output_feature, int is_multi_worker)
static uword	nat44_ed_in2out_slow_path_node_fn_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_output_feature, int is_multi_worker)
VLIB_NODE_FN()	nat44_ed_in2out_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
VLIB_NODE_FN()	nat44_ed_in2out_output_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
VLIB_NODE_FN()	nat44_ed_in2out_slowpath_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
VLIB_NODE_FN()	nat44_ed_in2out_output_slowpath_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
static u8 *	format_nat_pre_trace (u8 *s, va_list *args)

Variables
static char *	nat_in2out_ed_error_strings []
vlib_node_registration_t	nat44_ed_in2out_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_node) More...
vlib_node_registration_t	nat44_ed_in2out_output_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_output_node) More...
vlib_node_registration_t	nat44_ed_in2out_slowpath_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_slowpath_node) More...
vlib_node_registration_t	nat44_ed_in2out_output_slowpath_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_output_slowpath_node) More...
vlib_main_t *	vm
vlib_main_t vlib_node_runtime_t *	node
vlib_main_t vlib_node_runtime_t vlib_frame_t *	frame
vlib_node_registration_t	nat_pre_in2out_node
	(constructor) VLIB_REGISTER_NODE (nat_pre_in2out_node) More...
vlib_node_registration_t	nat_pre_in2out_output_node
	(constructor) VLIB_REGISTER_NODE (nat_pre_in2out_output_node) More...

Detailed Description

NAT44 endpoint-dependent inside to outside network translation.

Definition in file nat44_ed_in2out.c.

Macro Definition Documentation

ED_PORT_ALLOC_ATTEMPTS

#define ED_PORT_ALLOC_ATTEMPTS   (10)

Definition at line 38 of file nat44_ed_in2out.c.

Function Documentation

format_nat_in2out_ed_trace()

static u8* format_nat_in2out_ed_trace ( u8 *  s, va_list *  args  )

static

Definition at line 61 of file nat44_ed_in2out.c.

format_nat_pre_trace()

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

static

Definition at line 1601 of file nat44_ed_in2out.c.

icmp_in2out_ed_slow_path()

static u32 icmp_in2out_ed_slow_path ( snat_main_t *  sm, vlib_buffer_t *  b, ip4_header_t *  ip, icmp46_header_t *  icmp, u32  sw_if_index, u32  rx_fib_index, vlib_node_runtime_t *  node, u32  next, f64  now, u32  thread_index, nat_protocol_t  nat_proto, snat_session_t **  s_p, int  is_multi_worker  )

inlinestatic

Definition at line 737 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat44_ed_external_sm_lookup()

static_always_inline int nat44_ed_external_sm_lookup	(	snat_main_t *	sm,
		ip4_address_t	match_addr,
		u16	match_port,
		nat_protocol_t	match_protocol,
		u32	match_fib_index,
		ip4_address_t *	daddr,
		u16 *	dport
	)

Definition at line 307 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat44_ed_in2out_fast_path_node_fn_inline()

static uword nat44_ed_in2out_fast_path_node_fn_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, int  is_output_feature, int  is_multi_worker  )

inlinestatic

Definition at line 969 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat44_ed_in2out_node()

VLIB_NODE_FN() nat44_ed_in2out_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1499 of file nat44_ed_in2out.c.

Here is the call graph for this function:

nat44_ed_in2out_output_node()

VLIB_NODE_FN() nat44_ed_in2out_output_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1524 of file nat44_ed_in2out.c.

Here is the call graph for this function:

nat44_ed_in2out_output_slowpath_node()

VLIB_NODE_FN() nat44_ed_in2out_output_slowpath_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1574 of file nat44_ed_in2out.c.

Here is the call graph for this function:

nat44_ed_in2out_slow_path_node_fn_inline()

static uword nat44_ed_in2out_slow_path_node_fn_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, int  is_output_feature, int  is_multi_worker  )

inlinestatic

Definition at line 1266 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat44_ed_in2out_slowpath_node()

VLIB_NODE_FN() nat44_ed_in2out_slowpath_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1549 of file nat44_ed_in2out.c.

Here is the call graph for this function:

nat44_ed_in2out_slowpath_unknown_proto()

static snat_session_t* nat44_ed_in2out_slowpath_unknown_proto ( snat_main_t *  sm, vlib_buffer_t *  b, ip4_header_t *  ip, u32  rx_fib_index, u32  thread_index, f64  now, vlib_main_t *  vm, vlib_node_runtime_t *  node  )

static

Definition at line 821 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat44_ed_not_translate()

static_always_inline int nat44_ed_not_translate	(	vlib_main_t *	vm,
		snat_main_t *	sm,
		vlib_node_runtime_t *	node,
		u32	sw_if_index,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		u32	proto,
		u32	rx_fib_index,
		u32	thread_index
	)

Definition at line 560 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat44_ed_not_translate_output_feature()

static_always_inline int nat44_ed_not_translate_output_feature	(	snat_main_t *	sm,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		u16	src_port,
		u16	dst_port,
		u32	thread_index,
		u32	rx_sw_if_index,
		u32	tx_sw_if_index,
		f64	now,
		int	is_multi_worker
	)

Definition at line 659 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat_ed_alloc_addr_and_port()

static int nat_ed_alloc_addr_and_port ( snat_main_t *  sm, u32  rx_fib_index, u32  nat_proto, u32  thread_index, ip4_address_t  s_addr, u16  port_per_thread, u32  snat_thread_index, snat_session_t *  s, ip4_address_t *  outside_addr, u16 *  outside_port  )

static

Definition at line 225 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat_ed_alloc_addr_and_port_with_snat_address()

static int nat_ed_alloc_addr_and_port_with_snat_address ( snat_main_t *  sm, u32  nat_proto, u32  thread_index, snat_address_t *  a, u16  port_per_thread, u32  snat_thread_index, snat_session_t *  s, ip4_address_t *  outside_addr, u16 *  outside_port  )

static

Definition at line 169 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat_not_translate_output_feature_fwd()

static_always_inline int nat_not_translate_output_feature_fwd	(	snat_main_t *	sm,
		ip4_header_t *	ip,
		u32	thread_index,
		f64	now,
		vlib_main_t *	vm,
		vlib_buffer_t *	b
	)

Definition at line 595 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

nat_outside_fib_index_lookup()

static_always_inline u32 nat_outside_fib_index_lookup	(	snat_main_t *	sm,
		ip4_address_t	addr
	)

Definition at line 281 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

slow_path_ed()

static u32 slow_path_ed ( vlib_main_t *  vm, snat_main_t *  sm, vlib_buffer_t *  b, ip4_address_t  l_addr, ip4_address_t  r_addr, u16  l_port, u16  r_port, u8  proto, u32  rx_fib_index, snat_session_t **  sessionp, vlib_node_runtime_t *  node, u32  next, u32  thread_index, f64  now  )

static

Definition at line 335 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

snat_not_translate_fast()

static int snat_not_translate_fast ( snat_main_t *  sm, vlib_node_runtime_t *  node, u32  sw_if_index0, ip4_header_t *  ip0, u32  proto0, u32  rx_fib_index0  )

inlinestatic

Check if packet should be translated.

Packets aimed at outside interface and external address with active session should be translated.

Parameters

sm	NAT main
rt	NAT runtime data
sw_if_index0	index of the inside interface
ip0	IPv4 header
proto0	NAT protocol
rx_fib_index0	RX FIB index

Returns

0 if packet should be translated otherwise 1

Definition at line 115 of file nat44_ed_in2out.c.

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

frame

vlib_main_t vlib_node_runtime_t vlib_frame_t* frame

Initial value:

{
  return nat_pre_node_fn_inline (vm, node, frame,
                                 NAT_NEXT_IN2OUT_ED_FAST_PATH)

Definition at line 1612 of file nat44_ed_in2out.c.

nat44_ed_in2out_node

vlib_node_registration_t nat44_ed_in2out_node

Initial value:

= {
  .name = "nat44-ed-in2out",
  .vector_size = sizeof (u32),
  .sibling_of = "nat-default",
  .format_trace = format_nat_in2out_ed_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
  .error_strings = nat_in2out_ed_error_strings,
  .runtime_data_bytes = sizeof (snat_runtime_t),
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_node)

Definition at line 1513 of file nat44_ed_in2out.c.

nat44_ed_in2out_output_node

vlib_node_registration_t nat44_ed_in2out_output_node

Initial value:

= {
  .name = "nat44-ed-in2out-output",
  .vector_size = sizeof (u32),
  .sibling_of = "nat-default",
  .format_trace = format_nat_in2out_ed_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
  .error_strings = nat_in2out_ed_error_strings,
  .runtime_data_bytes = sizeof (snat_runtime_t),
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_output_node)

Definition at line 1538 of file nat44_ed_in2out.c.

nat44_ed_in2out_output_slowpath_node

vlib_node_registration_t nat44_ed_in2out_output_slowpath_node

Initial value:

= {
  .name = "nat44-ed-in2out-output-slowpath",
  .vector_size = sizeof (u32),
  .sibling_of = "nat-default",
  .format_trace = format_nat_in2out_ed_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
  .error_strings = nat_in2out_ed_error_strings,
  .runtime_data_bytes = sizeof (snat_runtime_t),
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_output_slowpath_node)

Definition at line 1589 of file nat44_ed_in2out.c.

nat44_ed_in2out_slowpath_node

vlib_node_registration_t nat44_ed_in2out_slowpath_node

Initial value:

= {
  .name = "nat44-ed-in2out-slowpath",
  .vector_size = sizeof (u32),
  .sibling_of = "nat-default",
  .format_trace = format_nat_in2out_ed_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN (nat_in2out_ed_error_strings),
  .error_strings = nat_in2out_ed_error_strings,
  .runtime_data_bytes = sizeof (snat_runtime_t),
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_in2out_slowpath_node)

Definition at line 1563 of file nat44_ed_in2out.c.

nat_in2out_ed_error_strings

char* nat_in2out_ed_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_nat_in2out_ed_error
 
}

Definition at line 40 of file nat44_ed_in2out.c.

nat_pre_in2out_node

vlib_node_registration_t nat_pre_in2out_node

Initial value:

= {
  .name = "nat-pre-in2out",
  .vector_size = sizeof (u32),
  .sibling_of = "nat-default",
  .format_trace = format_nat_pre_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = 0,
}

(constructor) VLIB_REGISTER_NODE (nat_pre_in2out_node)

Definition at line 1624 of file nat44_ed_in2out.c.

nat_pre_in2out_output_node

vlib_node_registration_t nat_pre_in2out_output_node

Initial value:

= {
  .name = "nat-pre-in2out-output",
  .vector_size = sizeof (u32),
  .sibling_of = "nat-default",
  .format_trace = format_nat_pre_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = 0,
}

(constructor) VLIB_REGISTER_NODE (nat_pre_in2out_output_node)

Definition at line 1633 of file nat44_ed_in2out.c.

node

vlib_main_t vlib_node_runtime_t* node

Definition at line 1611 of file nat44_ed_in2out.c.

vm

vlib_main_t* vm

Definition at line 1611 of file nat44_ed_in2out.c.