FD.io VPP  v17.01.1-3-gc6833f8
Vector Packet Processing
in2out.c File Reference
+ Include dependency graph for in2out.c:

Go to the source code of this file.

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 u8format_snat_in2out_trace (u8 *s, va_list *args)
 
static u8format_snat_in2out_fast_trace (u8 *s, va_list *args)
 
static u8format_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

Enumerator
SNAT_IN2OUT_N_ERROR 

Definition at line 97 of file in2out.c.

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
smSNAT main.
b0Vlib buffer.
ip0IP header.
udp0UDP header.
tcp0TCP header.
proto0SNAT 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)
}
#define foreach_snat_in2out_error
Definition: in2out.c:89

Definition at line 104 of file in2out.c.

vlib_node_registration_t snat_in2out_fast_node
Initial value:
= {
.name = "snat-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] = "snat-in2out-slowpath",
},
}
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
static u8 * format_snat_in2out_fast_trace(u8 *s, va_list *args)
Definition: in2out.c:58
static char * snat_in2out_error_strings[]
Definition: in2out.c:104
static uword snat_in2out_fast_static_map_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1392
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88

(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:
= {
.name = "snat-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] = "snat-in2out-slowpath",
},
}
static u8 * format_snat_in2out_trace(u8 *s, va_list *args)
Definition: in2out.c:43
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
static char * snat_in2out_error_strings[]
Definition: in2out.c:104
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88
static uword snat_in2out_fast_path_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1079

(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:
= {
.name = "snat-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] = "snat-in2out-slowpath",
},
}
static u8 * format_snat_in2out_trace(u8 *s, va_list *args)
Definition: in2out.c:43
static uword snat_in2out_slow_path_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1111
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
static char * snat_in2out_error_strings[]
Definition: in2out.c:104
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88

(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:
= {
.name = "snat-in2out-worker-handoff",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
}
bad routing header type(not 4)") sr_error (NO_MORE_SEGMENTS
static uword snat_in2out_worker_handoff_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: in2out.c:1143
static u8 * format_snat_in2out_worker_handoff_trace(u8 *s, va_list *args)
Definition: in2out.c:70
unsigned int u32
Definition: types.h:88

(constructor) VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node)

Definition at line 87 of file in2out.c.