ip6_sv_reass.c File Reference

IPv6 Shallow Virtual Reassembly. More...

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Data Structures
struct	ip6_sv_reass_key_t
union	ip6_sv_reass_val_t
union	ip6_sv_reass_kv_t
struct	ip6_sv_reass_t
struct	ip6_sv_reass_per_thread_t
struct	ip6_sv_reass_main_t
struct	ip6_sv_reass_trace_t
struct	ip6_rehash_cb_ctx
struct	ip6_sv_reassembly_handoff_trace_t

Macros
#define	MSEC_PER_SEC   1000
#define	IP6_SV_REASS_TIMEOUT_DEFAULT_MS   100
#define	IP6_SV_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS   10000
#define	IP6_SV_REASS_MAX_REASSEMBLIES_DEFAULT   1024
#define	IP6_SV_REASS_MAX_REASSEMBLY_LENGTH_DEFAULT   3
#define	IP6_SV_REASS_HT_LOAD_FACTOR   (0.75)
#define	foreach_ip6_sv_reassembly_handoff_error   _(CONGESTION_DROP, "congestion drop")

Enumerations
enum	ip6_sv_reass_rc_t { IP6_SV_REASS_RC_OK, IP6_SV_REASS_RC_TOO_MANY_FRAGMENTS, IP6_SV_REASS_RC_INTERNAL_ERROR, IP6_SV_REASS_RC_UNSUPP_IP_PROTO }
enum	ip6_sv_reass_next_t {   IP6_SV_REASSEMBLY_NEXT_INPUT, IP6_SV_REASSEMBLY_NEXT_DROP, IP6_SV_REASSEMBLY_NEXT_ICMP_ERROR, IP6_SV_REASSEMBLY_NEXT_HANDOFF,   IP6_SV_REASSEMBLY_N_NEXT }
enum	ip6_sv_reass_trace_operation_e { REASS_FRAGMENT_CACHE, REASS_FINISH, REASS_FRAGMENT_FORWARD, REASS_PASSTHROUGH }
enum	ip6_sv_reass_event_t { IP6_EVENT_CONFIG_CHANGED = 1 }
enum	ip6_sv_reassembly_handoff_error_t { IP6_SV_REASSEMBLY_HANDOFF_N_ERROR }

Functions
static u8 *	format_ip6_sv_reass_trace (u8 *s, va_list *args)
static void	ip6_sv_reass_add_trace (vlib_main_t *vm, vlib_node_runtime_t *node, ip6_sv_reass_main_t *rm, ip6_sv_reass_t *reass, u32 bi, ip6_sv_reass_trace_operation_e action, u32 ip_proto, u16 l4_src_port, u16 l4_dst_port)
static void	ip6_sv_reass_free (vlib_main_t *vm, ip6_sv_reass_main_t *rm, ip6_sv_reass_per_thread_t *rt, ip6_sv_reass_t *reass)
static void	ip6_sv_reass_init (ip6_sv_reass_t *reass)
static ip6_sv_reass_t *	ip6_sv_reass_find_or_create (vlib_main_t *vm, vlib_node_runtime_t *node, ip6_sv_reass_main_t *rm, ip6_sv_reass_per_thread_t *rt, ip6_sv_reass_kv_t *kv, u32 *icmp_bi, u8 *do_handoff)
static ip6_sv_reass_rc_t	ip6_sv_reass_update (vlib_main_t *vm, vlib_node_runtime_t *node, ip6_sv_reass_main_t *rm, ip6_sv_reass_per_thread_t *rt, ip6_sv_reass_t *reass, u32 bi0, ip6_frag_hdr_t *frag_hdr)
static bool	ip6_sv_reass_verify_upper_layer_present (vlib_node_runtime_t *node, vlib_buffer_t *b, ip6_frag_hdr_t *frag_hdr)
static bool	ip6_sv_reass_verify_fragment_multiple_8 (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_buffer_t *b, ip6_frag_hdr_t *frag_hdr)
static bool	ip6_sv_reass_verify_packet_size_lt_64k (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_buffer_t *b, ip6_frag_hdr_t *frag_hdr)
static uword	ip6_sv_reassembly_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, bool is_feature)
VLIB_NODE_FN()	ip6_sv_reass_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
VLIB_NODE_FN()	ip6_sv_reass_node_feature (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VNET_FEATURE_INIT (ip6_sv_reassembly_feature)
static u32	ip6_sv_reass_get_nbuckets ()
static int	ip6_rehash_cb (clib_bihash_kv_48_8_t *kv, void *_ctx)
static void	ip6_sv_reass_set_params (u32 timeout_ms, u32 max_reassemblies, u32 max_reassembly_length, u32 expire_walk_interval_ms)
vnet_api_error_t	ip6_sv_reass_set (u32 timeout_ms, u32 max_reassemblies, u32 max_reassembly_length, u32 expire_walk_interval_ms)
	set ip6 reassembly configuration More...
vnet_api_error_t	ip6_sv_reass_get (u32 *timeout_ms, u32 *max_reassemblies, u32 *max_reassembly_length, u32 *expire_walk_interval_ms)
	get ip6 reassembly configuration More...
static clib_error_t *	ip6_sv_reass_init_function (vlib_main_t *vm)
static uword	ip6_sv_reass_walk_expired (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *f)
static u8 *	format_ip6_sv_reass_key (u8 *s, va_list *args)
static u8 *	format_ip6_sv_reass (u8 *s, va_list *args)
static clib_error_t *	show_ip6_sv_reass (vlib_main_t *vm, unformat_input_t *input, CLIB_UNUSED(vlib_cli_command_t *lmd))
vnet_api_error_t	ip6_sv_reass_enable_disable (u32 sw_if_index, u8 enable_disable)
static u8 *	format_ip6_sv_reassembly_handoff_trace (u8 *s, va_list *args)
static uword	ip6_sv_reassembly_handoff_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, bool is_feature)
VLIB_NODE_FN()	ip6_sv_reassembly_handoff_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
VLIB_NODE_FN()	ip6_sv_reassembly_feature_handoff_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
int	ip6_sv_reass_enable_disable_with_refcnt (u32 sw_if_index, int is_enable)

Variables
ip6_sv_reass_main_t	ip6_sv_reass_main
static char *	ip6_sv_reassembly_error_strings []
vlib_node_registration_t	ip6_sv_reass_node
	(constructor) VLIB_REGISTER_NODE (ip6_sv_reass_node) More...
vlib_node_registration_t	ip6_sv_reass_node_feature
	(constructor) VLIB_REGISTER_NODE (ip6_sv_reass_node_feature) More...
vlib_node_registration_t	ip6_sv_reass_expire_node
	(constructor) VLIB_REGISTER_NODE (ip6_sv_reass_expire_node) More...
static vlib_cli_command_t	show_ip6_sv_reassembly_cmd
	(constructor) VLIB_CLI_COMMAND (show_ip6_sv_reassembly_cmd) More...
static char *	ip6_sv_reassembly_handoff_error_strings []
vlib_node_registration_t	ip6_sv_reassembly_handoff_node
	(constructor) VLIB_REGISTER_NODE (ip6_sv_reassembly_handoff_node) More...
vlib_node_registration_t	ip6_sv_reassembly_feature_handoff_node
	(constructor) VLIB_REGISTER_NODE (ip6_sv_reassembly_feature_handoff_node) More...

Detailed Description

IPv6 Shallow Virtual Reassembly.

This file contains the source code for IPv6 Shallow Virtual reassembly.

Definition in file ip6_sv_reass.c.

Macro Definition Documentation

foreach_ip6_sv_reassembly_handoff_error

#define foreach_ip6_sv_reassembly_handoff_error   _(CONGESTION_DROP, "congestion drop")

Definition at line 1192 of file ip6_sv_reass.c.

IP6_SV_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS

#define IP6_SV_REASS_EXPIRE_WALK_INTERVAL_DEFAULT_MS   10000

Definition at line 32 of file ip6_sv_reass.c.

IP6_SV_REASS_HT_LOAD_FACTOR

#define IP6_SV_REASS_HT_LOAD_FACTOR   (0.75)

Definition at line 35 of file ip6_sv_reass.c.

IP6_SV_REASS_MAX_REASSEMBLIES_DEFAULT

#define IP6_SV_REASS_MAX_REASSEMBLIES_DEFAULT   1024

Definition at line 33 of file ip6_sv_reass.c.

IP6_SV_REASS_MAX_REASSEMBLY_LENGTH_DEFAULT

#define IP6_SV_REASS_MAX_REASSEMBLY_LENGTH_DEFAULT   3

Definition at line 34 of file ip6_sv_reass.c.

IP6_SV_REASS_TIMEOUT_DEFAULT_MS

#define IP6_SV_REASS_TIMEOUT_DEFAULT_MS   100

Definition at line 31 of file ip6_sv_reass.c.

MSEC_PER_SEC

#define MSEC_PER_SEC   1000

Definition at line 30 of file ip6_sv_reass.c.

Enumeration Type Documentation

ip6_sv_reass_event_t

enum ip6_sv_reass_event_t

Enumerator
IP6_EVENT_CONFIG_CHANGED

Definition at line 860 of file ip6_sv_reass.c.

ip6_sv_reass_next_t

enum ip6_sv_reass_next_t

Enumerator
IP6_SV_REASSEMBLY_NEXT_INPUT
IP6_SV_REASSEMBLY_NEXT_DROP
IP6_SV_REASSEMBLY_NEXT_ICMP_ERROR
IP6_SV_REASSEMBLY_NEXT_HANDOFF
IP6_SV_REASSEMBLY_N_NEXT

Definition at line 162 of file ip6_sv_reass.c.

ip6_sv_reass_rc_t

enum ip6_sv_reass_rc_t

Enumerator
IP6_SV_REASS_RC_OK
IP6_SV_REASS_RC_TOO_MANY_FRAGMENTS
IP6_SV_REASS_RC_INTERNAL_ERROR
IP6_SV_REASS_RC_UNSUPP_IP_PROTO

Definition at line 37 of file ip6_sv_reass.c.

ip6_sv_reass_trace_operation_e

enum ip6_sv_reass_trace_operation_e

Enumerator
REASS_FRAGMENT_CACHE
REASS_FINISH
REASS_FRAGMENT_FORWARD
REASS_PASSTHROUGH

Definition at line 171 of file ip6_sv_reass.c.

ip6_sv_reassembly_handoff_error_t

enum ip6_sv_reassembly_handoff_error_t

Enumerator
IP6_SV_REASSEMBLY_HANDOFF_N_ERROR

Definition at line 1196 of file ip6_sv_reass.c.

Function Documentation

format_ip6_sv_reass()

static u8* format_ip6_sv_reass ( u8 *  s, va_list *  args  )

static

Definition at line 1093 of file ip6_sv_reass.c.

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format_ip6_sv_reass_key()

static u8* format_ip6_sv_reass_key ( u8 *  s, va_list *  args  )

static

Definition at line 1083 of file ip6_sv_reass.c.

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format_ip6_sv_reass_trace()

static u8* format_ip6_sv_reass_trace ( u8 *  s, va_list *  args  )

static

Definition at line 190 of file ip6_sv_reass.c.

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format_ip6_sv_reassembly_handoff_trace()

static u8* format_ip6_sv_reassembly_handoff_trace ( u8 *  s, va_list *  args  )

static

Definition at line 1216 of file ip6_sv_reass.c.

ip6_rehash_cb()

static int ip6_rehash_cb ( clib_bihash_kv_48_8_t *  kv, void *  _ctx  )

static

Definition at line 873 of file ip6_sv_reass.c.

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ip6_sv_reass_add_trace()

static void ip6_sv_reass_add_trace ( vlib_main_t *  vm, vlib_node_runtime_t *  node, ip6_sv_reass_main_t *  rm, ip6_sv_reass_t *  reass, u32  bi, ip6_sv_reass_trace_operation_e  action, u32  ip_proto, u16  l4_src_port, u16  l4_dst_port  )

static

Definition at line 224 of file ip6_sv_reass.c.

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ip6_sv_reass_enable_disable()

vnet_api_error_t ip6_sv_reass_enable_disable	(	u32	sw_if_index,
		u8	enable_disable
	)

Definition at line 1185 of file ip6_sv_reass.c.

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ip6_sv_reass_enable_disable_with_refcnt()

int ip6_sv_reass_enable_disable_with_refcnt	(	u32	sw_if_index,
		int	is_enable
	)

Definition at line 1327 of file ip6_sv_reass.c.

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ip6_sv_reass_find_or_create()

static ip6_sv_reass_t* ip6_sv_reass_find_or_create ( vlib_main_t *  vm, vlib_node_runtime_t *  node, ip6_sv_reass_main_t *  rm, ip6_sv_reass_per_thread_t *  rt, ip6_sv_reass_kv_t *  kv, u32 *  icmp_bi, u8 *  do_handoff  )

inlinestatic

Definition at line 306 of file ip6_sv_reass.c.

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ip6_sv_reass_free()

static void ip6_sv_reass_free ( vlib_main_t *  vm, ip6_sv_reass_main_t *  rm, ip6_sv_reass_per_thread_t *  rt, ip6_sv_reass_t *  reass  )

inlinestatic

Definition at line 259 of file ip6_sv_reass.c.

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ip6_sv_reass_get()

vnet_api_error_t ip6_sv_reass_get	(	u32 *	timeout_ms,
		u32 *	max_reassemblies,
		u32 *	max_reassembly_length,
		u32 *	expire_walk_interval_ms
	)

get ip6 reassembly configuration

Definition at line 934 of file ip6_sv_reass.c.

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ip6_sv_reass_get_nbuckets()

static u32 ip6_sv_reass_get_nbuckets ( )

static

Definition at line 843 of file ip6_sv_reass.c.

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ip6_sv_reass_init()

static void ip6_sv_reass_init ( ip6_sv_reass_t *  reass )

inlinestatic

Definition at line 299 of file ip6_sv_reass.c.

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ip6_sv_reass_init_function()

static clib_error_t* ip6_sv_reass_init_function ( vlib_main_t *  vm )

static

Definition at line 945 of file ip6_sv_reass.c.

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ip6_sv_reass_node()

VLIB_NODE_FN() ip6_sv_reass_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 782 of file ip6_sv_reass.c.

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ip6_sv_reass_node_feature()

VLIB_NODE_FN() ip6_sv_reass_node_feature	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 807 of file ip6_sv_reass.c.

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ip6_sv_reass_set()

vnet_api_error_t ip6_sv_reass_set	(	u32	timeout_ms,
		u32	max_reassemblies,
		u32	max_reassembly_length,
		u32	expire_walk_interval_ms
	)

set ip6 reassembly configuration

Definition at line 896 of file ip6_sv_reass.c.

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ip6_sv_reass_set_params()

static void ip6_sv_reass_set_params ( u32  timeout_ms, u32  max_reassemblies, u32  max_reassembly_length, u32  expire_walk_interval_ms  )

static

Definition at line 884 of file ip6_sv_reass.c.

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ip6_sv_reass_update()

static ip6_sv_reass_rc_t ip6_sv_reass_update ( vlib_main_t *  vm, vlib_node_runtime_t *  node, ip6_sv_reass_main_t *  rm, ip6_sv_reass_per_thread_t *  rt, ip6_sv_reass_t *  reass, u32  bi0, ip6_frag_hdr_t *  frag_hdr  )

inlinestatic

Definition at line 384 of file ip6_sv_reass.c.

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ip6_sv_reass_verify_fragment_multiple_8()

static bool ip6_sv_reass_verify_fragment_multiple_8 ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_buffer_t *  b, ip6_frag_hdr_t *  frag_hdr  )

inlinestatic

Definition at line 469 of file ip6_sv_reass.c.

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ip6_sv_reass_verify_packet_size_lt_64k()

static bool ip6_sv_reass_verify_packet_size_lt_64k ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_buffer_t *  b, ip6_frag_hdr_t *  frag_hdr  )

inlinestatic

Definition at line 491 of file ip6_sv_reass.c.

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ip6_sv_reass_verify_upper_layer_present()

static bool ip6_sv_reass_verify_upper_layer_present ( vlib_node_runtime_t *  node, vlib_buffer_t *  b, ip6_frag_hdr_t *  frag_hdr  )

inlinestatic

Definition at line 447 of file ip6_sv_reass.c.

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ip6_sv_reass_walk_expired()

static uword ip6_sv_reass_walk_expired ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  f  )

static

Definition at line 1000 of file ip6_sv_reass.c.

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ip6_sv_reassembly_feature_handoff_node()

VLIB_NODE_FN() ip6_sv_reassembly_feature_handoff_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1302 of file ip6_sv_reass.c.

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ip6_sv_reassembly_handoff_inline()

static uword ip6_sv_reassembly_handoff_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, bool  is_feature  )

inlinestatic

Definition at line 1231 of file ip6_sv_reass.c.

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ip6_sv_reassembly_handoff_node()

VLIB_NODE_FN() ip6_sv_reassembly_handoff_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1278 of file ip6_sv_reass.c.

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ip6_sv_reassembly_inline()

static uword ip6_sv_reassembly_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, bool  is_feature  )

inlinestatic

Definition at line 514 of file ip6_sv_reass.c.

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show_ip6_sv_reass()

static clib_error_t* show_ip6_sv_reass ( vlib_main_t *  vm, unformat_input_t *  input, CLIB_UNUSED(vlib_cli_command_t *lmd)    )

static

Definition at line 1120 of file ip6_sv_reass.c.

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VNET_FEATURE_INIT()

VNET_FEATURE_INIT

(

ip6_sv_reassembly_feature

)

Variable Documentation

ip6_sv_reass_expire_node

vlib_node_registration_t ip6_sv_reass_expire_node

Initial value:

= {
    .function = ip6_sv_reass_walk_expired,
    .format_trace = format_ip6_sv_reass_trace,
    .type = VLIB_NODE_TYPE_PROCESS,
    .name = "ip6-sv-reassembly-expire-walk",
 
    .n_errors = ARRAY_LEN (ip6_sv_reassembly_error_strings),
    .error_strings = ip6_sv_reassembly_error_strings,
 
}

(constructor) VLIB_REGISTER_NODE (ip6_sv_reass_expire_node)

Definition at line 1070 of file ip6_sv_reass.c.

ip6_sv_reass_main

ip6_sv_reass_main_t ip6_sv_reass_main

Definition at line 159 of file ip6_sv_reass.c.

ip6_sv_reass_node

vlib_node_registration_t ip6_sv_reass_node

Initial value:

= {
    .name = "ip6-sv-reassembly",
    .vector_size = sizeof (u32),
    .format_trace = format_ip6_sv_reass_trace,
    .n_errors = ARRAY_LEN (ip6_sv_reassembly_error_strings),
    .error_strings = ip6_sv_reassembly_error_strings,
    .n_next_nodes = IP6_SV_REASSEMBLY_N_NEXT,
    .next_nodes =
        {
                [IP6_SV_REASSEMBLY_NEXT_INPUT] = "ip6-input",
                [IP6_SV_REASSEMBLY_NEXT_DROP] = "ip6-drop",
                [IP6_SV_REASSEMBLY_NEXT_ICMP_ERROR] = "ip6-icmp-error",
                [IP6_SV_REASSEMBLY_NEXT_HANDOFF] = "ip6-sv-reassembly-handoff",
        },
}

(constructor) VLIB_REGISTER_NODE (ip6_sv_reass_node)

Definition at line 790 of file ip6_sv_reass.c.

ip6_sv_reass_node_feature

vlib_node_registration_t ip6_sv_reass_node_feature

Initial value:

= {
    .name = "ip6-sv-reassembly-feature",
    .vector_size = sizeof (u32),
    .format_trace = format_ip6_sv_reass_trace,
    .n_errors = ARRAY_LEN (ip6_sv_reassembly_error_strings),
    .error_strings = ip6_sv_reassembly_error_strings,
    .n_next_nodes = IP6_SV_REASSEMBLY_N_NEXT,
    .next_nodes =
        {
                [IP6_SV_REASSEMBLY_NEXT_INPUT] = "ip6-input",
                [IP6_SV_REASSEMBLY_NEXT_DROP] = "ip6-drop",
                [IP6_SV_REASSEMBLY_NEXT_ICMP_ERROR] = "ip6-icmp-error",
                [IP6_SV_REASSEMBLY_NEXT_HANDOFF] = "ip6-sv-reass-feature-hoff",
        },
}

(constructor) VLIB_REGISTER_NODE (ip6_sv_reass_node_feature)

Definition at line 815 of file ip6_sv_reass.c.

ip6_sv_reassembly_error_strings

char* ip6_sv_reassembly_error_strings[]

static

Initial value:

= {
#define _(sym, string) 
  foreach_ip6_error
 
}

Definition at line 776 of file ip6_sv_reass.c.

ip6_sv_reassembly_feature_handoff_node

vlib_node_registration_t ip6_sv_reassembly_feature_handoff_node

Initial value:

= {
  .name = "ip6-sv-reass-feature-hoff",
  .vector_size = sizeof (u32),
  .n_errors = ARRAY_LEN(ip6_sv_reassembly_handoff_error_strings),
  .error_strings = ip6_sv_reassembly_handoff_error_strings,
  .format_trace = format_ip6_sv_reassembly_handoff_trace,
 
  .n_next_nodes = 1,
 
  .next_nodes = {
    [0] = "error-drop",
  },
}

(constructor) VLIB_REGISTER_NODE (ip6_sv_reassembly_feature_handoff_node)

Definition at line 1310 of file ip6_sv_reass.c.

ip6_sv_reassembly_handoff_error_strings

char* ip6_sv_reassembly_handoff_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_ip6_sv_reassembly_handoff_error
 
}

Definition at line 1204 of file ip6_sv_reass.c.

ip6_sv_reassembly_handoff_node

vlib_node_registration_t ip6_sv_reassembly_handoff_node

Initial value:

= {
  .name = "ip6-sv-reassembly-handoff",
  .vector_size = sizeof (u32),
  .n_errors = ARRAY_LEN(ip6_sv_reassembly_handoff_error_strings),
  .error_strings = ip6_sv_reassembly_handoff_error_strings,
  .format_trace = format_ip6_sv_reassembly_handoff_trace,
 
  .n_next_nodes = 1,
 
  .next_nodes = {
    [0] = "error-drop",
  },
}

(constructor) VLIB_REGISTER_NODE (ip6_sv_reassembly_handoff_node)

Definition at line 1287 of file ip6_sv_reass.c.

show_ip6_sv_reassembly_cmd

vlib_cli_command_t show_ip6_sv_reassembly_cmd

static

Initial value:

= {
    .path = "show ip6-sv-reassembly",
    .short_help = "show ip6-sv-reassembly [details]",
    .function = show_ip6_sv_reass,
}

(constructor) VLIB_CLI_COMMAND (show_ip6_sv_reassembly_cmd)

Definition at line 1176 of file ip6_sv_reass.c.