out2in_ed.c File Reference

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

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Data Structures
struct	nat44_ed_out2in_trace_t

Macros
#define	foreach_nat_out2in_ed_error

Enumerations
enum	nat_out2in_ed_error_t { NAT_OUT2IN_ED_N_ERROR }
enum	nat44_ed_out2in_next_t {   NAT44_ED_OUT2IN_NEXT_DROP, NAT44_ED_OUT2IN_NEXT_LOOKUP, NAT44_ED_OUT2IN_NEXT_ICMP_ERROR, NAT44_ED_OUT2IN_NEXT_IN2OUT,   NAT44_ED_OUT2IN_NEXT_SLOW_PATH, NAT44_ED_OUT2IN_NEXT_REASS, NAT44_ED_OUT2IN_N_NEXT }

Functions
static u8 *	format_nat44_ed_out2in_trace (u8 *s, va_list *args)
static u32	icmp_out2in_ed_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)
int	nat44_o2i_ed_is_idle_session_cb (clib_bihash_kv_16_8_t *kv, void *arg)
static snat_session_t *	create_session_for_static_mapping_ed (snat_main_t *sm, vlib_buffer_t *b, snat_session_key_t l_key, snat_session_key_t e_key, vlib_node_runtime_t *node, u32 thread_index, twice_nat_type_t twice_nat, lb_nat_type_t lb_nat, f64 now)
static_always_inline int	icmp_get_ed_key (ip4_header_t *ip0, nat_ed_ses_key_t *p_key0)
static int	next_src_nat (snat_main_t *sm, ip4_header_t *ip, u8 proto, u16 src_port, u16 dst_port, u32 thread_index, u32 rx_fib_index)
static void	create_bypass_for_fwd (snat_main_t *sm, ip4_header_t *ip, u32 rx_fib_index, u32 thread_index)
u32	icmp_match_out2in_ed (snat_main_t *sm, vlib_node_runtime_t *node, u32 thread_index, vlib_buffer_t *b, ip4_header_t *ip, u8 *p_proto, snat_session_key_t *p_value, u8 *p_dont_translate, void *d, void *e)
static snat_session_t *	nat44_ed_out2in_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_out2in_node_fn_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_slow_path)
static uword	nat44_ed_out2in_fast_path_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_out2in_node, nat44_ed_out2in_fast_path_fn)
static uword	nat44_ed_out2in_slow_path_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_out2in_slowpath_node, nat44_ed_out2in_slow_path_fn)
static uword	nat44_ed_out2in_reass_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VLIB_NODE_FUNCTION_MULTIARCH (nat44_ed_out2in_reass_node, nat44_ed_out2in_reass_node_fn)

Variables
static char *	nat_out2in_ed_error_strings []
vlib_node_registration_t	nat44_ed_out2in_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_node) More...
vlib_node_registration_t	nat44_ed_out2in_slowpath_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_slowpath_node) More...
vlib_node_registration_t	nat44_ed_out2in_reass_node
	(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_reass_node) More...

Detailed Description

NAT44 endpoint-dependent outside to inside network translation.

Definition in file out2in_ed.c.

Macro Definition Documentation

#define foreach_nat_out2in_ed_error

Value:

_(UNSUPPORTED_PROTOCOL, "unsupported protocol")         \
_(OUT2IN_PACKETS, "good out2in packets processed")      \
_(OUT_OF_PORTS, "out of ports")                         \
_(BAD_ICMP_TYPE, "unsupported ICMP type")               \
_(NO_TRANSLATION, "no translation")                     \
_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded")   \
_(DROP_FRAGMENT, "drop fragment")                       \
_(MAX_REASS, "maximum reassemblies exceeded")           \
_(MAX_FRAG, "maximum fragments per reassembly exceeded")\
_(NON_SYN, "non-SYN packet try to create session")      \
_(TCP_PACKETS, "TCP packets")                           \
_(UDP_PACKETS, "UDP packets")                           \
_(ICMP_PACKETS, "ICMP packets")                         \
_(OTHER_PACKETS, "other protocol packets")              \
_(FRAGMENTS, "fragments")                               \
_(CACHED_FRAGMENTS, "cached fragments")                 \
_(PROCESSED_FRAGMENTS, "processed fragments")

Definition at line 34 of file out2in_ed.c.

Enumeration Type Documentation

enum nat44_ed_out2in_next_t

Enumerator
NAT44_ED_OUT2IN_NEXT_DROP
NAT44_ED_OUT2IN_NEXT_LOOKUP
NAT44_ED_OUT2IN_NEXT_ICMP_ERROR
NAT44_ED_OUT2IN_NEXT_IN2OUT
NAT44_ED_OUT2IN_NEXT_SLOW_PATH
NAT44_ED_OUT2IN_NEXT_REASS
NAT44_ED_OUT2IN_N_NEXT

Definition at line 67 of file out2in_ed.c.

enum nat_out2in_ed_error_t

Enumerator
NAT_OUT2IN_ED_N_ERROR

Definition at line 53 of file out2in_ed.c.

Function Documentation

static void create_bypass_for_fwd ( snat_main_t *  sm, ip4_header_t *  ip, u32  rx_fib_index, u32  thread_index  )

static

Definition at line 402 of file out2in_ed.c.

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static snat_session_t* create_session_for_static_mapping_ed ( snat_main_t *  sm, vlib_buffer_t *  b, snat_session_key_t  l_key, snat_session_key_t  e_key, vlib_node_runtime_t *  node, u32  thread_index, twice_nat_type_t  twice_nat, lb_nat_type_t  lb_nat, f64  now  )

static

Definition at line 222 of file out2in_ed.c.

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static u8* format_nat44_ed_out2in_trace ( u8 *  s, va_list *  args  )

static

Definition at line 91 of file out2in_ed.c.

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static_always_inline int icmp_get_ed_key	(	ip4_header_t *	ip0,
		nat_ed_ses_key_t *	p_key0
	)

Definition at line 338 of file out2in_ed.c.

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u32 icmp_match_out2in_ed	(	snat_main_t *	sm,
		vlib_node_runtime_t *	node,
		u32	thread_index,
		vlib_buffer_t *	b,
		ip4_header_t *	ip,
		u8 *	p_proto,
		snat_session_key_t *	p_value,
		u8 *	p_dont_translate,
		void *	d,
		void *	e
	)

Definition at line 492 of file out2in_ed.c.

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static u32 icmp_out2in_ed_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 109 of file out2in_ed.c.

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static uword nat44_ed_out2in_fast_path_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1547 of file out2in_ed.c.

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static uword nat44_ed_out2in_node_fn_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, int  is_slow_path  )

inlinestatic

Definition at line 712 of file out2in_ed.c.

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static uword nat44_ed_out2in_reass_node_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1613 of file out2in_ed.c.

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static uword nat44_ed_out2in_slow_path_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 1580 of file out2in_ed.c.

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static snat_session_t* nat44_ed_out2in_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 608 of file out2in_ed.c.

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int nat44_o2i_ed_is_idle_session_cb	(	clib_bihash_kv_16_8_t *	kv,
		void *	arg
	)

Definition at line 131 of file out2in_ed.c.

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static int next_src_nat ( snat_main_t *  sm, ip4_header_t *  ip, u8  proto, u16  src_port, u16  dst_port, u32  thread_index, u32  rx_fib_index  )

static

Definition at line 387 of file out2in_ed.c.

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VLIB_NODE_FUNCTION_MULTIARCH	(	nat44_ed_out2in_node	,
		nat44_ed_out2in_fast_path_fn
	)

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VLIB_NODE_FUNCTION_MULTIARCH	(	nat44_ed_out2in_slowpath_node	,
		nat44_ed_out2in_slow_path_fn
	)

VLIB_NODE_FUNCTION_MULTIARCH	(	nat44_ed_out2in_reass_node	,
		nat44_ed_out2in_reass_node_fn
	)

Variable Documentation

vlib_node_registration_t nat44_ed_out2in_node

Initial value:

= {
  .function = nat44_ed_out2in_fast_path_fn,
  .name = "nat44-ed-out2in",
  .vector_size = sizeof (u32),
  .format_trace = format_nat44_ed_out2in_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN(nat_out2in_ed_error_strings),
  .error_strings = nat_out2in_ed_error_strings,
  .runtime_data_bytes = sizeof (snat_runtime_t),
  .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT,
  .next_nodes = {
    [NAT44_ED_OUT2IN_NEXT_DROP] = "error-drop",
    [NAT44_ED_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [NAT44_ED_OUT2IN_NEXT_SLOW_PATH] = "nat44-ed-out2in-slowpath",
    [NAT44_ED_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
    [NAT44_ED_OUT2IN_NEXT_IN2OUT] = "nat44-ed-in2out",
    [NAT44_ED_OUT2IN_NEXT_REASS] = "nat44-ed-out2in-reass",
  },
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_node)

Definition at line 86 of file out2in_ed.c.

vlib_node_registration_t nat44_ed_out2in_reass_node

Initial value:

= {
  .function = nat44_ed_out2in_reass_node_fn,
  .name = "nat44-ed-out2in-reass",
  .vector_size = sizeof (u32),
  .format_trace = format_nat44_reass_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN(nat_out2in_ed_error_strings),
  .error_strings = nat_out2in_ed_error_strings,
  .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT,
  .next_nodes = {
    [NAT44_ED_OUT2IN_NEXT_DROP] = "error-drop",
    [NAT44_ED_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [NAT44_ED_OUT2IN_NEXT_SLOW_PATH] = "nat44-ed-out2in-slowpath",
    [NAT44_ED_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
    [NAT44_ED_OUT2IN_NEXT_IN2OUT] = "nat44-ed-in2out",
    [NAT44_ED_OUT2IN_NEXT_REASS] = "nat44-ed-out2in-reass",
  },
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_reass_node)

Definition at line 88 of file out2in_ed.c.

vlib_node_registration_t nat44_ed_out2in_slowpath_node

Initial value:

= {
  .function = nat44_ed_out2in_slow_path_fn,
  .name = "nat44-ed-out2in-slowpath",
  .vector_size = sizeof (u32),
  .format_trace = format_nat44_ed_out2in_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = ARRAY_LEN(nat_out2in_ed_error_strings),
  .error_strings = nat_out2in_ed_error_strings,
  .runtime_data_bytes = sizeof (snat_runtime_t),
  .n_next_nodes = NAT44_ED_OUT2IN_N_NEXT,
  .next_nodes = {
    [NAT44_ED_OUT2IN_NEXT_DROP] = "error-drop",
    [NAT44_ED_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
    [NAT44_ED_OUT2IN_NEXT_SLOW_PATH] = "nat44-ed-out2in-slowpath",
    [NAT44_ED_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
    [NAT44_ED_OUT2IN_NEXT_IN2OUT] = "nat44-ed-in2out",
    [NAT44_ED_OUT2IN_NEXT_REASS] = "nat44-ed-out2in-reass",
  },
}

(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_slowpath_node)

Definition at line 87 of file out2in_ed.c.

char* nat_out2in_ed_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_nat_out2in_ed_error

}

Definition at line 61 of file out2in_ed.c.