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Vector Packet Processing
in2out.c File Reference

NAT44 inside to outside network translation. More...

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Data Structures

struct  snat_in2out_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_ICMP_ERROR, SNAT_IN2OUT_NEXT_SLOW_PATH,
  SNAT_IN2OUT_NEXT_REASS, SNAT_IN2OUT_N_NEXT
}
 

Functions

static u8format_snat_in2out_trace (u8 *s, va_list *args)
 
static u8format_snat_in2out_fast_trace (u8 *s, va_list *args)
 
static int snat_not_translate (snat_main_t *sm, vlib_node_runtime_t *node, u32 sw_if_index0, ip4_header_t *ip0, u32 proto0, u32 rx_fib_index0, u32 thread_index)
 
static int nat_not_translate_output_feature (snat_main_t *sm, ip4_header_t *ip0, u32 proto0, u16 src_port, u16 dst_port, u32 thread_index, u32 sw_if_index)
 
int nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t *kv, void *arg)
 
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 thread_index, f64 now)
 
static_always_inline snat_in2out_error_t icmp_get_key (ip4_header_t *ip0, snat_session_key_t *p_key0)
 
u32 icmp_match_in2out_slow (snat_main_t *sm, vlib_node_runtime_t *node, u32 thread_index, vlib_buffer_t *b0, ip4_header_t *ip0, 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 ICMP packet translation and create session if needed. More...
 
u32 icmp_match_in2out_fast (snat_main_t *sm, vlib_node_runtime_t *node, u32 thread_index, vlib_buffer_t *b0, ip4_header_t *ip0, 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 ICMP packet translation. More...
 
u32 icmp_in2out (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_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 thread_index, snat_session_t **p_s0)
 
static int nat_in2out_sm_unknown_proto (snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index)
 
static uword snat_in2out_node_fn_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_slow_path, int is_output_feature)
 
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_output_fast_path_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_node, snat_in2out_output_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_output_slow_path_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (snat_in2out_output_slowpath_node, snat_in2out_output_slow_path_fn)
 
static uword nat44_in2out_reass_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (nat44_in2out_reass_node, nat44_in2out_reass_node_fn)
 
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_output_node
 (constructor) VLIB_REGISTER_NODE (snat_in2out_output_node) More...
 
vlib_node_registration_t snat_in2out_output_slowpath_node
 (constructor) VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) More...
 
vlib_node_registration_t nat44_in2out_reass_node
 (constructor) VLIB_REGISTER_NODE (nat44_in2out_reass_node) More...
 
static char * snat_in2out_error_strings []
 

Detailed Description

NAT44 inside to outside network translation.

Definition in file in2out.c.

Macro Definition Documentation

◆ foreach_snat_in2out_error

#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, "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")\
_(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 82 of file in2out.c.

Enumeration Type Documentation

◆ snat_in2out_error_t

Enumerator
SNAT_IN2OUT_N_ERROR 

Definition at line 101 of file in2out.c.

◆ snat_in2out_next_t

Enumerator
SNAT_IN2OUT_NEXT_LOOKUP 
SNAT_IN2OUT_NEXT_DROP 
SNAT_IN2OUT_NEXT_ICMP_ERROR 
SNAT_IN2OUT_NEXT_SLOW_PATH 
SNAT_IN2OUT_NEXT_REASS 
SNAT_IN2OUT_N_NEXT 

Definition at line 115 of file in2out.c.

Function Documentation

◆ format_snat_in2out_fast_trace()

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

Definition at line 63 of file in2out.c.

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◆ format_snat_in2out_trace()

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

Definition at line 47 of file in2out.c.

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◆ icmp_get_key()

Definition at line 390 of file in2out.c.

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◆ icmp_in2out()

u32 icmp_in2out ( 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 
)

Definition at line 635 of file in2out.c.

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◆ icmp_in2out_slow_path()

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  thread_index,
snat_session_t **  p_s0 
)
inlinestatic

Definition at line 785 of file in2out.c.

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◆ icmp_match_in2out_fast()

u32 icmp_match_in2out_fast ( snat_main_t sm,
vlib_node_runtime_t node,
u32  thread_index,
vlib_buffer_t b0,
ip4_header_t ip0,
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 ICMP packet translation.

Parameters
[in]smNAT main
[in,out]nodeNAT node runtime
[in]thread_indexthread index
[in,out]b0buffer containing packet to be translated
[out]p_protoprotocol used for matching
[out]p_valueaddress and port after NAT translation
[out]p_dont_translateif packet should not be translated
doptional parameter
eoptional parameter

Definition at line 566 of file in2out.c.

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◆ icmp_match_in2out_slow()

u32 icmp_match_in2out_slow ( snat_main_t sm,
vlib_node_runtime_t node,
u32  thread_index,
vlib_buffer_t b0,
ip4_header_t ip0,
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 ICMP packet translation and create session if needed.

Parameters
[in,out]smNAT main
[in,out]nodeNAT node runtime
[in]thread_indexthread index
[in,out]b0buffer containing packet to be translated
[out]p_protoprotocol used for matching
[out]p_valueaddress and port after NAT translation
[out]p_dont_translateif packet should not be translated
doptional parameter
eoptional parameter

Definition at line 449 of file in2out.c.

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◆ nat44_i2o_is_idle_session_cb()

int nat44_i2o_is_idle_session_cb ( clib_bihash_kv_8_8_t kv,
void *  arg 
)

Definition at line 202 of file in2out.c.

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◆ nat44_in2out_reass_node_fn()

static uword nat44_in2out_reass_node_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 1703 of file in2out.c.

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◆ nat_in2out_sm_unknown_proto()

static int nat_in2out_sm_unknown_proto ( snat_main_t sm,
vlib_buffer_t b,
ip4_header_t ip,
u32  rx_fib_index 
)
static

Definition at line 811 of file in2out.c.

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◆ nat_not_translate_output_feature()

static int nat_not_translate_output_feature ( snat_main_t sm,
ip4_header_t ip0,
u32  proto0,
u16  src_port,
u16  dst_port,
u32  thread_index,
u32  sw_if_index 
)
inlinestatic

Definition at line 160 of file in2out.c.

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◆ slow_path()

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  thread_index,
f64  now 
)
static

Definition at line 244 of file in2out.c.

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◆ snat_in2out_fast_path_fn()

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

Definition at line 1554 of file in2out.c.

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◆ snat_in2out_fast_static_map_fn()

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 2003 of file in2out.c.

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◆ snat_in2out_node_fn_inline()

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

Definition at line 849 of file in2out.c.

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◆ snat_in2out_output_fast_path_fn()

static uword snat_in2out_output_fast_path_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 1590 of file in2out.c.

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◆ snat_in2out_output_slow_path_fn()

static uword snat_in2out_output_slow_path_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 1665 of file in2out.c.

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◆ snat_in2out_slow_path_fn()

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

Definition at line 1628 of file in2out.c.

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◆ snat_not_translate()

static int snat_not_translate ( snat_main_t sm,
vlib_node_runtime_t node,
u32  sw_if_index0,
ip4_header_t ip0,
u32  proto0,
u32  rx_fib_index0,
u32  thread_index 
)
inlinestatic

Definition at line 126 of file in2out.c.

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◆ VLIB_NODE_FUNCTION_MULTIARCH() [1/6]

VLIB_NODE_FUNCTION_MULTIARCH ( snat_in2out_node  ,
snat_in2out_fast_path_fn   
)
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◆ VLIB_NODE_FUNCTION_MULTIARCH() [2/6]

VLIB_NODE_FUNCTION_MULTIARCH ( snat_in2out_output_node  ,
snat_in2out_output_fast_path_fn   
)

◆ VLIB_NODE_FUNCTION_MULTIARCH() [3/6]

VLIB_NODE_FUNCTION_MULTIARCH ( snat_in2out_slowpath_node  ,
snat_in2out_slow_path_fn   
)

◆ VLIB_NODE_FUNCTION_MULTIARCH() [4/6]

VLIB_NODE_FUNCTION_MULTIARCH ( snat_in2out_output_slowpath_node  ,
snat_in2out_output_slow_path_fn   
)

◆ VLIB_NODE_FUNCTION_MULTIARCH() [5/6]

VLIB_NODE_FUNCTION_MULTIARCH ( nat44_in2out_reass_node  ,
nat44_in2out_reass_node_fn   
)

◆ VLIB_NODE_FUNCTION_MULTIARCH() [6/6]

VLIB_NODE_FUNCTION_MULTIARCH ( snat_in2out_fast_node  ,
snat_in2out_fast_static_map_fn   
)

Variable Documentation

◆ nat44_in2out_reass_node

vlib_node_registration_t nat44_in2out_reass_node
Initial value:
= {
.name = "nat44-in2out-reass",
.vector_size = sizeof (u32),
.format_trace = format_nat44_reass_trace,
.error_strings = snat_in2out_error_strings,
.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] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
}
static char * snat_in2out_error_strings[]
Definition: in2out.c:109
unsigned int u32
Definition: types.h:88
static uword nat44_in2out_reass_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1703
#define ARRAY_LEN(x)
Definition: clib.h:62
format_function_t format_nat44_reass_trace
Definition: nat.h:597

(constructor) VLIB_REGISTER_NODE (nat44_in2out_reass_node)

Definition at line 80 of file in2out.c.

◆ snat_in2out_error_strings

char* snat_in2out_error_strings[]
static
Initial value:
= {
#define _(sym,string)
}
#define foreach_snat_in2out_error
Definition: in2out.c:82

Definition at line 109 of file in2out.c.

◆ snat_in2out_fast_node

vlib_node_registration_t snat_in2out_fast_node
Initial value:
= {
.name = "nat44-in2out-fast",
.vector_size = sizeof (u32),
.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] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
}
static u8 * format_snat_in2out_fast_trace(u8 *s, va_list *args)
Definition: in2out.c:63
static char * snat_in2out_error_strings[]
Definition: in2out.c:109
unsigned int u32
Definition: types.h:88
static uword snat_in2out_fast_static_map_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:2003
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (snat_in2out_fast_node)

Definition at line 77 of file in2out.c.

◆ snat_in2out_node

vlib_node_registration_t snat_in2out_node
Initial value:
= {
.name = "nat44-in2out",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.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] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
}
static u8 * format_snat_in2out_trace(u8 *s, va_list *args)
Definition: in2out.c:47
static char * snat_in2out_error_strings[]
Definition: in2out.c:109
unsigned int u32
Definition: types.h:88
#define ARRAY_LEN(x)
Definition: clib.h:62
static uword snat_in2out_fast_path_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1554

(constructor) VLIB_REGISTER_NODE (snat_in2out_node)

Definition at line 75 of file in2out.c.

◆ snat_in2out_output_node

vlib_node_registration_t snat_in2out_output_node
Initial value:
= {
.name = "nat44-in2out-output",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.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] = "interface-output",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
}
static u8 * format_snat_in2out_trace(u8 *s, va_list *args)
Definition: in2out.c:47
static char * snat_in2out_error_strings[]
Definition: in2out.c:109
unsigned int u32
Definition: types.h:88
static uword snat_in2out_output_fast_path_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1590
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (snat_in2out_output_node)

Definition at line 78 of file in2out.c.

◆ snat_in2out_output_slowpath_node

vlib_node_registration_t snat_in2out_output_slowpath_node
Initial value:
= {
.name = "nat44-in2out-output-slowpath",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.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] = "interface-output",
[SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
}
static u8 * format_snat_in2out_trace(u8 *s, va_list *args)
Definition: in2out.c:47
static char * snat_in2out_error_strings[]
Definition: in2out.c:109
static uword snat_in2out_output_slow_path_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1665
unsigned int u32
Definition: types.h:88
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node)

Definition at line 79 of file in2out.c.

◆ snat_in2out_slowpath_node

vlib_node_registration_t snat_in2out_slowpath_node
Initial value:
= {
.name = "nat44-in2out-slowpath",
.vector_size = sizeof (u32),
.format_trace = format_snat_in2out_trace,
.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] = "nat44-in2out-slowpath",
[SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
[SNAT_IN2OUT_NEXT_REASS] = "nat44-in2out-reass",
},
}
static u8 * format_snat_in2out_trace(u8 *s, va_list *args)
Definition: in2out.c:47
static uword snat_in2out_slow_path_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1628
static char * snat_in2out_error_strings[]
Definition: in2out.c:109
unsigned int u32
Definition: types.h:88
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (snat_in2out_slowpath_node)

Definition at line 76 of file in2out.c.