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Vector Packet Processing
out2in.c File Reference
+ Include dependency graph for out2in.c:

Go to the source code of this file.

Data Structures

struct  snat_out2in_trace_t
 
struct  snat_out2in_worker_handoff_trace_t
 

Macros

#define foreach_snat_out2in_error
 

Enumerations

enum  snat_out2in_error_t { SNAT_OUT2IN_N_ERROR }
 
enum  snat_out2in_next_t { SNAT_OUT2IN_NEXT_DROP, SNAT_OUT2IN_NEXT_LOOKUP, SNAT_OUT2IN_NEXT_ICMP_ERROR, SNAT_OUT2IN_N_NEXT }
 

Functions

static u8format_snat_out2in_trace (u8 *s, va_list *args)
 
static u8format_snat_out2in_fast_trace (u8 *s, va_list *args)
 
static u8format_snat_out2in_worker_handoff_trace (u8 *s, va_list *args)
 
static snat_session_t * create_session_for_static_mapping (snat_main_t *sm, vlib_buffer_t *b0, snat_session_key_t in2out, snat_session_key_t out2in, vlib_node_runtime_t *node, u32 thread_index)
 Create session for static mapping. More...
 
static_always_inline snat_out2in_error_t icmp_get_key (ip4_header_t *ip0, snat_session_key_t *p_key0)
 
u32 icmp_match_out2in_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_out2in_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...
 
static u32 icmp_out2in (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_out2in_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 snat_session_t * snat_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 snat_session_t * snat_out2in_lb (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 snat_out2in_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_node, snat_out2in_node_fn)
 
static uword snat_det_out2in_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (snat_det_out2in_node, snat_det_out2in_node_fn)
 
u32 icmp_match_out2in_det (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...
 
static uword snat_out2in_worker_handoff_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_worker_handoff_node, snat_out2in_worker_handoff_fn)
 
static uword snat_out2in_fast_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_fast_node, snat_out2in_fast_node_fn)
 

Variables

vlib_node_registration_t snat_out2in_node
 (constructor) VLIB_REGISTER_NODE (snat_out2in_node) More...
 
vlib_node_registration_t snat_out2in_fast_node
 (constructor) VLIB_REGISTER_NODE (snat_out2in_fast_node) More...
 
vlib_node_registration_t snat_out2in_worker_handoff_node
 (constructor) VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node) More...
 
vlib_node_registration_t snat_det_out2in_node
 (constructor) VLIB_REGISTER_NODE (snat_det_out2in_node) More...
 
static char * snat_out2in_error_strings []
 

Macro Definition Documentation

#define foreach_snat_out2in_error
Value:
_(UNSUPPORTED_PROTOCOL, "Unsupported protocol") \
_(OUT2IN_PACKETS, "Good out2in packets processed") \
_(BAD_ICMP_TYPE, "unsupported ICMP type") \
_(NO_TRANSLATION, "No translation") \
_(MAX_SESSIONS_EXCEEDED, "Maximum sessions exceeded")

Definition at line 86 of file out2in.c.

Enumeration Type Documentation

Enumerator
SNAT_OUT2IN_N_ERROR 

Definition at line 93 of file out2in.c.

Enumerator
SNAT_OUT2IN_NEXT_DROP 
SNAT_OUT2IN_NEXT_LOOKUP 
SNAT_OUT2IN_NEXT_ICMP_ERROR 
SNAT_OUT2IN_N_NEXT 

Definition at line 106 of file out2in.c.

Function Documentation

static snat_session_t* create_session_for_static_mapping ( snat_main_t sm,
vlib_buffer_t b0,
snat_session_key_t  in2out,
snat_session_key_t  out2in,
vlib_node_runtime_t node,
u32  thread_index 
)
inlinestatic

Create session for static mapping.

Create NAT session initiated by host from external network with static mapping.

Parameters
smNAT main.
b0Vlib buffer.
in2outIn2out NAT44 session key.
out2inOut2in NAT44 session key.
nodeVlib node.
Returns
SNAT session if successfully created otherwise 0.

Definition at line 128 of file out2in.c.

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static u8* format_snat_out2in_fast_trace ( u8 s,
va_list *  args 
)
static

Definition at line 56 of file out2in.c.

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static u8* format_snat_out2in_trace ( u8 s,
va_list *  args 
)
static

Definition at line 45 of file out2in.c.

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static u8* format_snat_out2in_worker_handoff_trace ( u8 s,
va_list *  args 
)
static

Definition at line 67 of file out2in.c.

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Definition at line 241 of file out2in.c.

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u32 icmp_match_out2in_det ( 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 2038 of file out2in.c.

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u32 icmp_match_out2in_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 409 of file out2in.c.

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u32 icmp_match_out2in_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 299 of file out2in.c.

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static u32 icmp_out2in ( 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 
)
inlinestatic

Definition at line 468 of file out2in.c.

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static u32 icmp_out2in_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 591 of file out2in.c.

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static uword snat_det_out2in_node_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 1541 of file out2in.c.

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static uword snat_out2in_fast_node_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 2327 of file out2in.c.

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static snat_session_t* snat_out2in_lb ( 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 772 of file out2in.c.

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static uword snat_out2in_node_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 926 of file out2in.c.

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static snat_session_t* snat_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 625 of file out2in.c.

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static uword snat_out2in_worker_handoff_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 2167 of file out2in.c.

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VLIB_NODE_FUNCTION_MULTIARCH ( snat_out2in_node  ,
snat_out2in_node_fn   
)
VLIB_NODE_FUNCTION_MULTIARCH ( snat_det_out2in_node  ,
snat_det_out2in_node_fn   
)
VLIB_NODE_FUNCTION_MULTIARCH ( snat_out2in_worker_handoff_node  ,
snat_out2in_worker_handoff_fn   
)
VLIB_NODE_FUNCTION_MULTIARCH ( snat_out2in_fast_node  ,
snat_out2in_fast_node_fn   
)

Variable Documentation

vlib_node_registration_t snat_det_out2in_node
Initial value:
= {
.name = "nat44-det-out2in",
.vector_size = sizeof (u32),
.format_trace = format_snat_out2in_trace,
.error_strings = snat_out2in_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
.n_next_nodes = SNAT_OUT2IN_N_NEXT,
.next_nodes = {
[SNAT_OUT2IN_NEXT_DROP] = "error-drop",
[SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
}
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88
static uword snat_det_out2in_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:1541
static char * snat_out2in_error_strings[]
Definition: out2in.c:100
static u8 * format_snat_out2in_trace(u8 *s, va_list *args)
Definition: out2in.c:45

(constructor) VLIB_REGISTER_NODE (snat_det_out2in_node)

Definition at line 84 of file out2in.c.

char* snat_out2in_error_strings[]
static
Initial value:
= {
#define _(sym,string)
}
#define foreach_snat_out2in_error
Definition: out2in.c:86

Definition at line 100 of file out2in.c.

vlib_node_registration_t snat_out2in_fast_node
Initial value:
= {
.name = "nat44-out2in-fast",
.vector_size = sizeof (u32),
.error_strings = snat_out2in_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
.n_next_nodes = SNAT_OUT2IN_N_NEXT,
.next_nodes = {
[SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_OUT2IN_NEXT_DROP] = "error-drop",
[SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
}
static u8 * format_snat_out2in_fast_trace(u8 *s, va_list *args)
Definition: out2in.c:56
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88
static char * snat_out2in_error_strings[]
Definition: out2in.c:100
static uword snat_out2in_fast_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:2327

(constructor) VLIB_REGISTER_NODE (snat_out2in_fast_node)

Definition at line 82 of file out2in.c.

vlib_node_registration_t snat_out2in_node
Initial value:
= {
.function = snat_out2in_node_fn,
.name = "nat44-out2in",
.vector_size = sizeof (u32),
.format_trace = format_snat_out2in_trace,
.error_strings = snat_out2in_error_strings,
.runtime_data_bytes = sizeof (snat_runtime_t),
.n_next_nodes = SNAT_OUT2IN_N_NEXT,
.next_nodes = {
[SNAT_OUT2IN_NEXT_DROP] = "error-drop",
[SNAT_OUT2IN_NEXT_LOOKUP] = "ip4-lookup",
[SNAT_OUT2IN_NEXT_ICMP_ERROR] = "ip4-icmp-error",
},
}
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88
static char * snat_out2in_error_strings[]
Definition: out2in.c:100
static u8 * format_snat_out2in_trace(u8 *s, va_list *args)
Definition: out2in.c:45
static uword snat_out2in_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:926

(constructor) VLIB_REGISTER_NODE (snat_out2in_node)

Definition at line 81 of file out2in.c.

vlib_node_registration_t snat_out2in_worker_handoff_node
Initial value:
= {
.name = "nat44-out2in-worker-handoff",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
}
static uword snat_out2in_worker_handoff_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:2167
unsigned int u32
Definition: types.h:88
static u8 * format_snat_out2in_worker_handoff_trace(u8 *s, va_list *args)
Definition: out2in.c:67

(constructor) VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node)

Definition at line 83 of file out2in.c.