FD.io VPP  v18.01.2-1-g9b554f3
Vector Packet Processing
out2in.c File Reference
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Data Structures

struct  snat_out2in_trace_t
 
struct  snat_out2in_worker_handoff_trace_t
 
struct  nat44_out2in_reass_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_NEXT_REASS,
  SNAT_OUT2IN_NEXT_IN2OUT, 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 u8format_nat44_out2in_reass_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)
 
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, u32 proto, u16 src_port, u32 thread_index)
 
static void create_bypass_for_fwd (snat_main_t *sm, ip4_header_t *ip)
 
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 nat44_out2in_reass_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VLIB_NODE_FUNCTION_MULTIARCH (nat44_out2in_reass_node, nat44_out2in_reass_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...
 
vlib_node_registration_t nat44_out2in_reass_node
 (constructor) VLIB_REGISTER_NODE (nat44_out2in_reass_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") \
_(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")

Definition at line 107 of file out2in.c.

Enumeration Type Documentation

Enumerator
SNAT_OUT2IN_N_ERROR 

Definition at line 118 of file out2in.c.

Enumerator
SNAT_OUT2IN_NEXT_DROP 
SNAT_OUT2IN_NEXT_LOOKUP 
SNAT_OUT2IN_NEXT_ICMP_ERROR 
SNAT_OUT2IN_NEXT_REASS 
SNAT_OUT2IN_NEXT_IN2OUT 
SNAT_OUT2IN_N_NEXT 

Definition at line 131 of file out2in.c.

Function Documentation

static void create_bypass_for_fwd ( snat_main_t sm,
ip4_header_t ip 
)
static

Definition at line 336 of file out2in.c.

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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 155 of file out2in.c.

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static u8* format_nat44_out2in_reass_trace ( u8 s,
va_list *  args 
)
static

Definition at line 88 of file out2in.c.

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

Definition at line 57 of file out2in.c.

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

Definition at line 46 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 68 of file out2in.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 269 of file out2in.c.

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Definition at line 224 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 2498 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 536 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 386 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 595 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 721 of file out2in.c.

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static uword nat44_out2in_reass_node_fn ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)
static

Definition at line 1702 of file out2in.c.

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static int next_src_nat ( snat_main_t sm,
ip4_header_t ip,
u32  proto,
u16  src_port,
u32  thread_index 
)
static

Definition at line 316 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 1999 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 2787 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 871 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 1038 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 752 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 2627 of file out2in.c.

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VLIB_NODE_FUNCTION_MULTIARCH ( snat_out2in_node  ,
snat_out2in_node_fn   
)

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VLIB_NODE_FUNCTION_MULTIARCH ( nat44_out2in_reass_node  ,
nat44_out2in_reass_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 nat44_out2in_reass_node
Initial value:
= {
.name = "nat44-out2in-reass",
.vector_size = sizeof (u32),
.error_strings = snat_out2in_error_strings,
.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",
[SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass",
[SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out",
},
}
static uword nat44_out2in_reass_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:1702
#define ARRAY_LEN(x)
Definition: clib.h:59
static u8 * format_nat44_out2in_reass_trace(u8 *s, va_list *args)
Definition: out2in.c:88
unsigned int u32
Definition: types.h:88
static char * snat_out2in_error_strings[]
Definition: out2in.c:125

(constructor) VLIB_REGISTER_NODE (nat44_out2in_reass_node)

Definition at line 105 of file out2in.c.

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",
[SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass",
[SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out",
},
}
#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:1999
static char * snat_out2in_error_strings[]
Definition: out2in.c:125
static u8 * format_snat_out2in_trace(u8 *s, va_list *args)
Definition: out2in.c:46

(constructor) VLIB_REGISTER_NODE (snat_det_out2in_node)

Definition at line 104 of file out2in.c.

char* snat_out2in_error_strings[]
static
Initial value:
= {
#define _(sym,string)
}
#define foreach_snat_out2in_error
Definition: out2in.c:107

Definition at line 125 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",
[SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass",
[SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out",
},
}
static u8 * format_snat_out2in_fast_trace(u8 *s, va_list *args)
Definition: out2in.c:57
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88
static char * snat_out2in_error_strings[]
Definition: out2in.c:125
static uword snat_out2in_fast_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:2787

(constructor) VLIB_REGISTER_NODE (snat_out2in_fast_node)

Definition at line 102 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",
[SNAT_OUT2IN_NEXT_REASS] = "nat44-out2in-reass",
[SNAT_OUT2IN_NEXT_IN2OUT] = "nat44-in2out",
},
}
#define ARRAY_LEN(x)
Definition: clib.h:59
unsigned int u32
Definition: types.h:88
static char * snat_out2in_error_strings[]
Definition: out2in.c:125
static u8 * format_snat_out2in_trace(u8 *s, va_list *args)
Definition: out2in.c:46
static uword snat_out2in_node_fn(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
Definition: out2in.c:1038

(constructor) VLIB_REGISTER_NODE (snat_out2in_node)

Definition at line 101 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:2627
unsigned int u32
Definition: types.h:88
static u8 * format_snat_out2in_worker_handoff_trace(u8 *s, va_list *args)
Definition: out2in.c:68

(constructor) VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node)

Definition at line 103 of file out2in.c.