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Vector Packet Processing
ip4_reassembly.c File Reference

IPv4 Reassembly. More...

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Data Structures

struct  ip4_reass_key_t
 
union  ip4_reass_val_t
 
union  ip4_reass_kv_t
 
struct  ip4_reass_t
 
struct  ip4_reass_per_thread_t
 
struct  ip4_reass_main_t
 
struct  ip4_reass_range_trace_t
 
struct  ip4_reass_trace_t
 
struct  ip4_rehash_cb_ctx
 
struct  ip4_reassembly_handoff_trace_t
 

Macros

#define MSEC_PER_SEC   1000
 
#define IP4_REASS_TIMEOUT_DEFAULT_MS   100
 
#define IP4_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS   10000
 
#define IP4_REASS_MAX_REASSEMBLIES_DEFAULT   1024
 
#define IP4_REASS_HT_LOAD_FACTOR   (0.75)
 
#define IP4_REASS_DEBUG_BUFFERS   0
 
#define IP4_REASS_DEBUG_BUFFER(...)
 
#define foreach_ip4_reassembly_handoff_error   _(CONGESTION_DROP, "congestion drop")
 

Enumerations

enum  ip4_reass_rc_t { IP4_REASS_RC_OK, IP4_REASS_RC_INTERNAL_ERROR, IP4_REASS_RC_NO_BUF }
 
enum  ip4_reass_next_t { IP4_REASSEMBLY_NEXT_INPUT, IP4_REASSEMBLY_NEXT_DROP, IP4_REASSEMBLY_NEXT_HANDOFF, IP4_REASSEMBLY_N_NEXT }
 
enum  ip4_reass_trace_operation_e {
  RANGE_NEW, RANGE_SHRINK, RANGE_DISCARD, RANGE_OVERLAP,
  FINALIZE
}
 
enum  ip4_reass_event_t { IP4_EVENT_CONFIG_CHANGED = 1 }
 
enum  ip4_reassembly_handoff_error_t { IP4_REASSEMBLY_HANDOFF_N_ERROR }
 

Functions

static u32 ip4_reass_buffer_get_data_offset (vlib_buffer_t *b)
 
static u16 ip4_reass_buffer_get_data_len (vlib_buffer_t *b)
 
static void ip4_reass_trace_details (vlib_main_t *vm, u32 bi, ip4_reass_range_trace_t *trace)
 
static u8format_ip4_reass_range_trace (u8 *s, va_list *args)
 
static u8format_ip4_reass_trace (u8 *s, va_list *args)
 
static void ip4_reass_add_trace (vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_t *reass, u32 bi, ip4_reass_trace_operation_e action, u32 size_diff)
 
static void ip4_reass_free (ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass)
 
static void ip4_reass_on_timeout (vlib_main_t *vm, ip4_reass_main_t *rm, ip4_reass_t *reass)
 
static ip4_reass_tip4_reass_find_or_create (vlib_main_t *vm, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_kv_t *kv, u8 *do_handoff)
 
static ip4_reass_rc_t ip4_reass_finalize (vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass, u32 *bi0, u32 *next0, u32 *error0, bool is_feature)
 
static ip4_reass_rc_t ip4_reass_insert_range_in_chain (vlib_main_t *vm, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass, u32 prev_range_bi, u32 new_next_bi)
 
static ip4_reass_rc_t ip4_reass_remove_range_from_chain (vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_t *reass, u32 prev_range_bi, u32 discard_bi)
 
static ip4_reass_rc_t ip4_reass_update (vlib_main_t *vm, vlib_node_runtime_t *node, ip4_reass_main_t *rm, ip4_reass_per_thread_t *rt, ip4_reass_t *reass, u32 *bi0, u32 *next0, u32 *error0, bool is_feature)
 
static uword ip4_reassembly_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, bool is_feature)
 
VLIB_NODE_FN() ip4_reass_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
VLIB_NODE_FN() ip4_reass_node_feature (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
 VNET_FEATURE_INIT (ip4_reassembly_feature, static)
 
static u32 ip4_reass_get_nbuckets ()
 
static void ip4_rehash_cb (clib_bihash_kv_16_8_t *kv, void *_ctx)
 
static void ip4_reass_set_params (u32 timeout_ms, u32 max_reassemblies, u32 expire_walk_interval_ms)
 
vnet_api_error_t ip4_reass_set (u32 timeout_ms, u32 max_reassemblies, u32 expire_walk_interval_ms)
 set ip4 reassembly configuration More...
 
vnet_api_error_t ip4_reass_get (u32 *timeout_ms, u32 *max_reassemblies, u32 *expire_walk_interval_ms)
 get ip4 reassembly configuration More...
 
static clib_error_tip4_reass_init_function (vlib_main_t *vm)
 
static uword ip4_reass_walk_expired (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *f)
 
static u8format_ip4_reass_key (u8 *s, va_list *args)
 
static u8format_ip4_reass (u8 *s, va_list *args)
 
static clib_error_tshow_ip4_reass (vlib_main_t *vm, unformat_input_t *input, CLIB_UNUSED(vlib_cli_command_t *lmd))
 
vnet_api_error_t ip4_reass_enable_disable (u32 sw_if_index, u8 enable_disable)
 
static u8format_ip4_reassembly_handoff_trace (u8 *s, va_list *args)
 
static uword ip4_reassembly_handoff_node_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, bool is_feature)
 
VLIB_NODE_FN() ip4_reassembly_handoff_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 
VLIB_NODE_FN() ip4_reassembly_feature_handoff_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
 

Variables

ip4_reass_main_t ip4_reass_main
 
vlib_node_registration_t ip4_reass_node
 (constructor) VLIB_REGISTER_NODE (ip4_reass_node) More...
 
vlib_node_registration_t ip4_reass_node_feature
 (constructor) VLIB_REGISTER_NODE (ip4_reass_node_feature) More...
 
static char * ip4_reassembly_error_strings []
 
static vlib_node_registration_t ip4_reass_expire_node
 (constructor) VLIB_REGISTER_NODE (ip4_reass_expire_node) More...
 
static vlib_cli_command_t show_ip4_reassembly_cmd
 (constructor) VLIB_CLI_COMMAND (show_ip4_reassembly_cmd) More...
 
static char * ip4_reassembly_handoff_error_strings []
 
vlib_node_registration_t ip4_reassembly_handoff_node
 (constructor) VLIB_REGISTER_NODE (ip4_reassembly_handoff_node) More...
 
vlib_node_registration_t ip4_reassembly_feature_handoff_node
 (constructor) VLIB_REGISTER_NODE (ip4_reassembly_feature_handoff_node) More...
 

Detailed Description

IPv4 Reassembly.

This file contains the source code for IPv4 reassembly.

Definition in file ip4_reassembly.c.

Macro Definition Documentation

◆ foreach_ip4_reassembly_handoff_error

#define foreach_ip4_reassembly_handoff_error   _(CONGESTION_DROP, "congestion drop")

Definition at line 1458 of file ip4_reassembly.c.

◆ IP4_REASS_DEBUG_BUFFER

#define IP4_REASS_DEBUG_BUFFER (   ...)

Definition at line 54 of file ip4_reassembly.c.

◆ IP4_REASS_DEBUG_BUFFERS

#define IP4_REASS_DEBUG_BUFFERS   0

Definition at line 35 of file ip4_reassembly.c.

◆ IP4_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS

#define IP4_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS   10000

Definition at line 31 of file ip4_reassembly.c.

◆ IP4_REASS_HT_LOAD_FACTOR

#define IP4_REASS_HT_LOAD_FACTOR   (0.75)

Definition at line 33 of file ip4_reassembly.c.

◆ IP4_REASS_MAX_REASSEMBLIES_DEFAULT

#define IP4_REASS_MAX_REASSEMBLIES_DEFAULT   1024

Definition at line 32 of file ip4_reassembly.c.

◆ IP4_REASS_TIMEOUT_DEFAULT_MS

#define IP4_REASS_TIMEOUT_DEFAULT_MS   100

Definition at line 30 of file ip4_reassembly.c.

◆ MSEC_PER_SEC

#define MSEC_PER_SEC   1000

Definition at line 29 of file ip4_reassembly.c.

Enumeration Type Documentation

◆ ip4_reass_event_t

Enumerator
IP4_EVENT_CONFIG_CHANGED 

Definition at line 1141 of file ip4_reassembly.c.

◆ ip4_reass_next_t

Enumerator
IP4_REASSEMBLY_NEXT_INPUT 
IP4_REASSEMBLY_NEXT_DROP 
IP4_REASSEMBLY_NEXT_HANDOFF 
IP4_REASSEMBLY_N_NEXT 

Definition at line 180 of file ip4_reassembly.c.

◆ ip4_reass_rc_t

Enumerator
IP4_REASS_RC_OK 
IP4_REASS_RC_INTERNAL_ERROR 
IP4_REASS_RC_NO_BUF 

Definition at line 57 of file ip4_reassembly.c.

◆ ip4_reass_trace_operation_e

Enumerator
RANGE_NEW 
RANGE_SHRINK 
RANGE_DISCARD 
RANGE_OVERLAP 
FINALIZE 

Definition at line 188 of file ip4_reassembly.c.

◆ ip4_reassembly_handoff_error_t

Enumerator
IP4_REASSEMBLY_HANDOFF_N_ERROR 

Definition at line 1462 of file ip4_reassembly.c.

Function Documentation

◆ format_ip4_reass()

static u8* format_ip4_reass ( u8 s,
va_list *  args 
)
static

Definition at line 1360 of file ip4_reassembly.c.

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◆ format_ip4_reass_key()

static u8* format_ip4_reass_key ( u8 s,
va_list *  args 
)
static

Definition at line 1350 of file ip4_reassembly.c.

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◆ format_ip4_reass_range_trace()

static u8* format_ip4_reass_range_trace ( u8 s,
va_list *  args 
)
static

Definition at line 236 of file ip4_reassembly.c.

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◆ format_ip4_reass_trace()

static u8* format_ip4_reass_trace ( u8 s,
va_list *  args 
)
static

Definition at line 246 of file ip4_reassembly.c.

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◆ format_ip4_reassembly_handoff_trace()

static u8* format_ip4_reassembly_handoff_trace ( u8 s,
va_list *  args 
)
static

Definition at line 1482 of file ip4_reassembly.c.

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◆ ip4_reass_add_trace()

static void ip4_reass_add_trace ( vlib_main_t vm,
vlib_node_runtime_t node,
ip4_reass_main_t rm,
ip4_reass_t reass,
u32  bi,
ip4_reass_trace_operation_e  action,
u32  size_diff 
)
static

Definition at line 283 of file ip4_reassembly.c.

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◆ ip4_reass_buffer_get_data_len()

static u16 ip4_reass_buffer_get_data_len ( vlib_buffer_t b)
inlinestatic

Definition at line 109 of file ip4_reassembly.c.

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◆ ip4_reass_buffer_get_data_offset()

static u32 ip4_reass_buffer_get_data_offset ( vlib_buffer_t b)
inlinestatic

Definition at line 102 of file ip4_reassembly.c.

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◆ ip4_reass_enable_disable()

vnet_api_error_t ip4_reass_enable_disable ( u32  sw_if_index,
u8  enable_disable 
)

Definition at line 1449 of file ip4_reassembly.c.

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◆ ip4_reass_finalize()

static ip4_reass_rc_t ip4_reass_finalize ( vlib_main_t vm,
vlib_node_runtime_t node,
ip4_reass_main_t rm,
ip4_reass_per_thread_t rt,
ip4_reass_t reass,
u32 bi0,
u32 next0,
u32 error0,
bool  is_feature 
)
inlinestatic

Definition at line 426 of file ip4_reassembly.c.

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◆ ip4_reass_find_or_create()

static ip4_reass_t* ip4_reass_find_or_create ( vlib_main_t vm,
ip4_reass_main_t rm,
ip4_reass_per_thread_t rt,
ip4_reass_kv_t kv,
u8 do_handoff 
)
static

Definition at line 362 of file ip4_reassembly.c.

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◆ ip4_reass_free()

static void ip4_reass_free ( ip4_reass_main_t rm,
ip4_reass_per_thread_t rt,
ip4_reass_t reass 
)
inlinestatic

Definition at line 317 of file ip4_reassembly.c.

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◆ ip4_reass_get()

vnet_api_error_t ip4_reass_get ( u32 timeout_ms,
u32 max_reassemblies,
u32 expire_walk_interval_ms 
)

get ip4 reassembly configuration

Definition at line 1211 of file ip4_reassembly.c.

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◆ ip4_reass_get_nbuckets()

static u32 ip4_reass_get_nbuckets ( )
inlinestatic

Definition at line 1124 of file ip4_reassembly.c.

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◆ ip4_reass_init_function()

static clib_error_t* ip4_reass_init_function ( vlib_main_t vm)
static

Definition at line 1221 of file ip4_reassembly.c.

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◆ ip4_reass_insert_range_in_chain()

static ip4_reass_rc_t ip4_reass_insert_range_in_chain ( vlib_main_t vm,
ip4_reass_main_t rm,
ip4_reass_per_thread_t rt,
ip4_reass_t reass,
u32  prev_range_bi,
u32  new_next_bi 
)
inlinestatic

Definition at line 610 of file ip4_reassembly.c.

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◆ ip4_reass_node()

VLIB_NODE_FN() ip4_reass_node ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)

Definition at line 1065 of file ip4_reassembly.c.

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◆ ip4_reass_node_feature()

VLIB_NODE_FN() ip4_reass_node_feature ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)

Definition at line 1089 of file ip4_reassembly.c.

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◆ ip4_reass_on_timeout()

static void ip4_reass_on_timeout ( vlib_main_t vm,
ip4_reass_main_t rm,
ip4_reass_t reass 
)
inlinestatic

Definition at line 329 of file ip4_reassembly.c.

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◆ ip4_reass_remove_range_from_chain()

static ip4_reass_rc_t ip4_reass_remove_range_from_chain ( vlib_main_t vm,
vlib_node_runtime_t node,
ip4_reass_main_t rm,
ip4_reass_t reass,
u32  prev_range_bi,
u32  discard_bi 
)
inlinestatic

Definition at line 644 of file ip4_reassembly.c.

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◆ ip4_reass_set()

vnet_api_error_t ip4_reass_set ( u32  timeout_ms,
u32  max_reassemblies,
u32  expire_walk_interval_ms 
)

set ip4 reassembly configuration

Definition at line 1174 of file ip4_reassembly.c.

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◆ ip4_reass_set_params()

static void ip4_reass_set_params ( u32  timeout_ms,
u32  max_reassemblies,
u32  expire_walk_interval_ms 
)
static

Definition at line 1164 of file ip4_reassembly.c.

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◆ ip4_reass_trace_details()

static void ip4_reass_trace_details ( vlib_main_t vm,
u32  bi,
ip4_reass_range_trace_t trace 
)
static

Definition at line 223 of file ip4_reassembly.c.

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◆ ip4_reass_update()

static ip4_reass_rc_t ip4_reass_update ( vlib_main_t vm,
vlib_node_runtime_t node,
ip4_reass_main_t rm,
ip4_reass_per_thread_t rt,
ip4_reass_t reass,
u32 bi0,
u32 next0,
u32 error0,
bool  is_feature 
)
inlinestatic

Definition at line 696 of file ip4_reassembly.c.

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◆ ip4_reass_walk_expired()

static uword ip4_reass_walk_expired ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t f 
)
static

Definition at line 1266 of file ip4_reassembly.c.

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◆ ip4_reassembly_feature_handoff_node()

VLIB_NODE_FN() ip4_reassembly_feature_handoff_node ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)

Definition at line 1575 of file ip4_reassembly.c.

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◆ ip4_reassembly_handoff_node()

VLIB_NODE_FN() ip4_reassembly_handoff_node ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame 
)

Definition at line 1548 of file ip4_reassembly.c.

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◆ ip4_reassembly_handoff_node_inline()

static uword ip4_reassembly_handoff_node_inline ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame,
bool  is_feature 
)
inlinestatic

Definition at line 1497 of file ip4_reassembly.c.

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◆ ip4_reassembly_inline()

static uword ip4_reassembly_inline ( vlib_main_t vm,
vlib_node_runtime_t node,
vlib_frame_t frame,
bool  is_feature 
)
inlinestatic

Definition at line 925 of file ip4_reassembly.c.

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◆ ip4_rehash_cb()

static void ip4_rehash_cb ( clib_bihash_kv_16_8_t kv,
void *  _ctx 
)
static

Definition at line 1154 of file ip4_reassembly.c.

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◆ show_ip4_reass()

static clib_error_t* show_ip4_reass ( vlib_main_t vm,
unformat_input_t input,
CLIB_UNUSED(vlib_cli_command_t *lmd)   
)
static

Definition at line 1396 of file ip4_reassembly.c.

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◆ VNET_FEATURE_INIT()

VNET_FEATURE_INIT ( ip4_reassembly_feature  ,
static   
)

Variable Documentation

◆ ip4_reass_expire_node

vlib_node_registration_t ip4_reass_expire_node
static
Initial value:
= {
.name = "ip4-reassembly-expire-walk",
.format_trace = format_ip4_reass_trace,
.error_strings = ip4_reassembly_error_strings,
}
static u8 * format_ip4_reass_trace(u8 *s, va_list *args)
static char * ip4_reassembly_error_strings[]
static uword ip4_reass_walk_expired(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *f)
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (ip4_reass_expire_node)

Definition at line 1338 of file ip4_reassembly.c.

◆ ip4_reass_main

ip4_reass_main_t ip4_reass_main

Definition at line 177 of file ip4_reassembly.c.

◆ ip4_reass_node

vlib_node_registration_t ip4_reass_node
Initial value:
= {
.name = "ip4-reassembly",
.vector_size = sizeof (u32),
.format_trace = format_ip4_reass_trace,
.error_strings = ip4_reassembly_error_strings,
.n_next_nodes = IP4_REASSEMBLY_N_NEXT,
.next_nodes =
{
[IP4_REASSEMBLY_NEXT_INPUT] = "ip4-input",
[IP4_REASSEMBLY_NEXT_DROP] = "ip4-drop",
[IP4_REASSEMBLY_NEXT_HANDOFF] = "ip4-reassembly-handoff",
},
}
static u8 * format_ip4_reass_trace(u8 *s, va_list *args)
static char * ip4_reassembly_error_strings[]
unsigned int u32
Definition: types.h:88
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (ip4_reass_node)

Definition at line 1072 of file ip4_reassembly.c.

◆ ip4_reass_node_feature

vlib_node_registration_t ip4_reass_node_feature
Initial value:
= {
.name = "ip4-reassembly-feature",
.vector_size = sizeof (u32),
.format_trace = format_ip4_reass_trace,
.error_strings = ip4_reassembly_error_strings,
.n_next_nodes = IP4_REASSEMBLY_N_NEXT,
.next_nodes =
{
[IP4_REASSEMBLY_NEXT_INPUT] = "ip4-input",
[IP4_REASSEMBLY_NEXT_DROP] = "ip4-drop",
[IP4_REASSEMBLY_NEXT_HANDOFF] = "ip4-reass-feature-hoff",
},
}
static u8 * format_ip4_reass_trace(u8 *s, va_list *args)
static char * ip4_reassembly_error_strings[]
unsigned int u32
Definition: types.h:88
#define ARRAY_LEN(x)
Definition: clib.h:62

(constructor) VLIB_REGISTER_NODE (ip4_reass_node_feature)

Definition at line 1097 of file ip4_reassembly.c.

◆ ip4_reassembly_error_strings

char* ip4_reassembly_error_strings[]
static
Initial value:
= {
#define _(sym, string)
}
#define foreach_ip4_error
Definition: ip4_error.h:43

Definition at line 1059 of file ip4_reassembly.c.

◆ ip4_reassembly_feature_handoff_node

vlib_node_registration_t ip4_reassembly_feature_handoff_node
Initial value:
= {
.name = "ip4-reass-feature-hoff",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
}
unsigned int u32
Definition: types.h:88
static u8 * format_ip4_reassembly_handoff_trace(u8 *s, va_list *args)
#define ARRAY_LEN(x)
Definition: clib.h:62
static char * ip4_reassembly_handoff_error_strings[]

(constructor) VLIB_REGISTER_NODE (ip4_reassembly_feature_handoff_node)

Definition at line 1587 of file ip4_reassembly.c.

◆ ip4_reassembly_handoff_error_strings

char* ip4_reassembly_handoff_error_strings[]
static
Initial value:
= {
#define _(sym,string)
}
#define foreach_ip4_reassembly_handoff_error

Definition at line 1470 of file ip4_reassembly.c.

◆ ip4_reassembly_handoff_node

vlib_node_registration_t ip4_reassembly_handoff_node
Initial value:
= {
.name = "ip4-reassembly-handoff",
.vector_size = sizeof (u32),
.n_next_nodes = 1,
.next_nodes = {
[0] = "error-drop",
},
}
unsigned int u32
Definition: types.h:88
static u8 * format_ip4_reassembly_handoff_trace(u8 *s, va_list *args)
#define ARRAY_LEN(x)
Definition: clib.h:62
static char * ip4_reassembly_handoff_error_strings[]

(constructor) VLIB_REGISTER_NODE (ip4_reassembly_handoff_node)

Definition at line 1558 of file ip4_reassembly.c.

◆ show_ip4_reassembly_cmd

vlib_cli_command_t show_ip4_reassembly_cmd
static
Initial value:
= {
.path = "show ip4-reassembly",
.short_help = "show ip4-reassembly [details]",
.function = show_ip4_reass,
}
static clib_error_t * show_ip4_reass(vlib_main_t *vm, unformat_input_t *input, CLIB_UNUSED(vlib_cli_command_t *lmd))

(constructor) VLIB_CLI_COMMAND (show_ip4_reassembly_cmd)

Definition at line 1440 of file ip4_reassembly.c.