arp.c File Reference

IPv4 ARP. More...

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Go to the source code of this file.

Data Structures
struct	ethernet_arp_interface_t_
	Per-interface ARP configuration and state. More...
struct	ethernet_arp_main_t
struct	ethernet_arp_input_trace_t
struct	pg_ethernet_arp_header_t

Macros
#define	foreach_arp_disabled_error   _ (DISABLED, "ARP Disabled on this interface") \

Typedefs
typedef struct ethernet_arp_interface_t_	ethernet_arp_interface_t
	Per-interface ARP configuration and state. More...
typedef enum arp_input_next_t_	arp_input_next_t
typedef enum arp_disabled_next_t_	arp_disabled_next_t

Enumerations
enum	arp_input_next_t_ { ARP_INPUT_NEXT_DROP, ARP_INPUT_NEXT_DISABLED, ARP_INPUT_N_NEXT }
enum	arp_disabled_next_t_ { ARP_DISABLED_NEXT_DROP, ARP_DISABLED_N_NEXT }
enum	arp_disabled_error_t { ARP_DISABLED_N_ERROR }
enum	arp_dst_fib_type { ARP_DST_FIB_NONE, ARP_DST_FIB_ADJ, ARP_DST_FIB_CONN }

Functions
static uword	unformat_ethernet_arp_opcode_host_byte_order (unformat_input_t *input, va_list *args)
static uword	unformat_ethernet_arp_opcode_net_byte_order (unformat_input_t *input, va_list *args)
static u8 *	format_ethernet_arp_input_trace (u8 *s, va_list *va)
static int	arp_is_enabled (ethernet_arp_main_t *am, u32 sw_if_index)
static void	arp_enable (ethernet_arp_main_t *am, u32 sw_if_index)
static void	arp_disable (ethernet_arp_main_t *am, u32 sw_if_index)
static int	arp_unnumbered (vlib_buffer_t *p0, u32 input_sw_if_index, u32 conn_sw_if_index)
static u32	arp_learn (u32 sw_if_index, const ethernet_arp_ip4_over_ethernet_address_t *addr)
static uword	arp_input (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
static uword	arp_disabled (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
static enum arp_dst_fib_type	arp_dst_fib_check (const fib_node_index_t fei, fib_entry_flag_t *flags)
static uword	arp_reply (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VNET_FEATURE_ARC_INIT (arp_feat, static)
	VNET_FEATURE_INIT (arp_reply_feat_node, static)
	VNET_FEATURE_INIT (arp_proxy_feat_node, static)
	VNET_FEATURE_INIT (arp_disabled_feat_node, static)
	VNET_FEATURE_INIT (arp_drop_feat_node, static)
static void	pg_ethernet_arp_header_init (pg_ethernet_arp_header_t *p)
uword	unformat_pg_arp_header (unformat_input_t *input, va_list *args)
static void	arp_enable_disable_interface (ip4_main_t *im, uword opaque, u32 sw_if_index, u32 is_enable)
static clib_error_t *	vnet_arp_add_del_sw_interface (vnet_main_t *vnm, u32 sw_if_index, u32 is_add)
	VNET_SW_INTERFACE_ADD_DEL_FUNCTION (vnet_arp_add_del_sw_interface)
static clib_error_t *	ethernet_arp_init (vlib_main_t *vm)

Variables
static ethernet_arp_main_t	ethernet_arp_main
static const u8	vrrp_prefix [] = { 0x00, 0x00, 0x5E, 0x00, 0x01 }
static char *	arp_disabled_error_strings []
static char *	ethernet_arp_error_strings []
static vlib_node_registration_t	arp_input_node
	(constructor) VLIB_REGISTER_NODE (arp_input_node) More...
static vlib_node_registration_t	arp_disabled_node
	(constructor) VLIB_REGISTER_NODE (arp_disabled_node) More...
static vlib_node_registration_t	arp_reply_node
	(constructor) VLIB_REGISTER_NODE (arp_reply_node) More...
static const ip_neighbor_vft_t	arp_vft

Detailed Description

IPv4 ARP.

This file contains code to manage the IPv4 ARP tables (IP Address to MAC Address lookup).

Definition in file arp.c.

Macro Definition Documentation

foreach_arp_disabled_error

#define foreach_arp_disabled_error   _ (DISABLED, "ARP Disabled on this interface") \

Definition at line 291 of file arp.c.

Typedef Documentation

arp_disabled_next_t

typedef enum arp_disabled_next_t_ arp_disabled_next_t

arp_input_next_t

typedef enum arp_input_next_t_ arp_input_next_t

ethernet_arp_interface_t

typedef struct ethernet_arp_interface_t_ ethernet_arp_interface_t

Per-interface ARP configuration and state.

Enumeration Type Documentation

arp_disabled_error_t

enum arp_disabled_error_t

Enumerator
ARP_DISABLED_N_ERROR

Definition at line 294 of file arp.c.

arp_disabled_next_t_

enum arp_disabled_next_t_

Enumerator
ARP_DISABLED_NEXT_DROP
ARP_DISABLED_N_NEXT

Definition at line 285 of file arp.c.

arp_dst_fib_type

enum arp_dst_fib_type

Enumerator
ARP_DST_FIB_NONE
ARP_DST_FIB_ADJ
ARP_DST_FIB_CONN

Definition at line 355 of file arp.c.

arp_input_next_t_

enum arp_input_next_t_

Enumerator
ARP_INPUT_NEXT_DROP
ARP_INPUT_NEXT_DISABLED
ARP_INPUT_N_NEXT

Definition at line 208 of file arp.c.

Function Documentation

arp_disable()

static void arp_disable ( ethernet_arp_main_t *  am, u32  sw_if_index  )

static

Definition at line 151 of file arp.c.

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arp_disabled()

static uword arp_disabled ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 309 of file arp.c.

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arp_dst_fib_check()

static enum arp_dst_fib_type arp_dst_fib_check ( const fib_node_index_t  fei, fib_entry_flag_t *  flags  )

static

Definition at line 368 of file arp.c.

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arp_enable()

static void arp_enable ( ethernet_arp_main_t *  am, u32  sw_if_index  )

static

Definition at line 136 of file arp.c.

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arp_enable_disable_interface()

static void arp_enable_disable_interface ( ip4_main_t *  im, uword  opaque, u32  sw_if_index, u32  is_enable  )

static

Definition at line 844 of file arp.c.

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arp_input()

static uword arp_input ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 216 of file arp.c.

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arp_is_enabled()

static int arp_is_enabled ( ethernet_arp_main_t *  am, u32  sw_if_index  )

static

Definition at line 127 of file arp.c.

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arp_learn()

static u32 arp_learn ( u32  sw_if_index, const ethernet_arp_ip4_over_ethernet_address_t *  addr  )

inlinestatic

Definition at line 189 of file arp.c.

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arp_reply()

static uword arp_reply ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 388 of file arp.c.

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arp_unnumbered()

static int arp_unnumbered ( vlib_buffer_t *  p0, u32  input_sw_if_index, u32  conn_sw_if_index  )

static

Definition at line 164 of file arp.c.

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ethernet_arp_init()

static clib_error_t* ethernet_arp_init ( vlib_main_t *  vm )

static

Definition at line 877 of file arp.c.

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format_ethernet_arp_input_trace()

static u8* format_ethernet_arp_input_trace ( u8 *  s, va_list *  va  )

static

Definition at line 113 of file arp.c.

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pg_ethernet_arp_header_init()

static void pg_ethernet_arp_header_init ( pg_ethernet_arp_header_t *  p )

inlinestatic

Definition at line 788 of file arp.c.

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unformat_ethernet_arp_opcode_host_byte_order()

static uword unformat_ethernet_arp_opcode_host_byte_order ( unformat_input_t *  input, va_list *  args  )

static

Definition at line 67 of file arp.c.

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unformat_ethernet_arp_opcode_net_byte_order()

static uword unformat_ethernet_arp_opcode_net_byte_order ( unformat_input_t *  input, va_list *  args  )

static

Definition at line 95 of file arp.c.

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unformat_pg_arp_header()

uword unformat_pg_arp_header	(	unformat_input_t *	input,
		va_list *	args
	)

Definition at line 805 of file arp.c.

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vnet_arp_add_del_sw_interface()

static clib_error_t* vnet_arp_add_del_sw_interface ( vnet_main_t *  vnm, u32  sw_if_index, u32  is_add  )

static

Definition at line 859 of file arp.c.

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VNET_FEATURE_ARC_INIT()

VNET_FEATURE_ARC_INIT	(	arp_feat	,
		static
	)

VNET_FEATURE_INIT() [1/4]

VNET_FEATURE_INIT	(	arp_reply_feat_node	,
		static
	)

VNET_FEATURE_INIT() [2/4]

VNET_FEATURE_INIT	(	arp_proxy_feat_node	,
		static
	)

VNET_FEATURE_INIT() [3/4]

VNET_FEATURE_INIT	(	arp_disabled_feat_node	,
		static
	)

VNET_FEATURE_INIT() [4/4]

VNET_FEATURE_INIT	(	arp_drop_feat_node	,
		static
	)

VNET_SW_INTERFACE_ADD_DEL_FUNCTION()

VNET_SW_INTERFACE_ADD_DEL_FUNCTION

(

vnet_arp_add_del_sw_interface

)

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Variable Documentation

arp_disabled_error_strings

char* arp_disabled_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_arp_disabled_error

}

Definition at line 302 of file arp.c.

arp_disabled_node

vlib_node_registration_t arp_disabled_node

static

Initial value:

=
{
  .function = arp_disabled,
  .name = "arp-disabled",
  .vector_size = sizeof (u32),
  .n_errors = ARP_DISABLED_N_ERROR,
  .error_strings = arp_disabled_error_strings,
  .n_next_nodes = ARP_DISABLED_N_NEXT,
  .next_nodes = {
    [ARP_INPUT_NEXT_DROP] = "error-drop",
  },
  .format_buffer = format_ethernet_arp_header,
  .format_trace = format_ethernet_arp_input_trace,
}

(constructor) VLIB_REGISTER_NODE (arp_disabled_node)

Definition at line 704 of file arp.c.

arp_input_node

vlib_node_registration_t arp_input_node

static

Initial value:

=
{
  .function = arp_input,
  .name = "arp-input",
  .vector_size = sizeof (u32),
  .n_errors = ETHERNET_ARP_N_ERROR,
  .error_strings = ethernet_arp_error_strings,
  .n_next_nodes = ARP_INPUT_N_NEXT,
  .next_nodes = {
    [ARP_INPUT_NEXT_DROP] = "error-drop",
    [ARP_INPUT_NEXT_DISABLED] = "arp-disabled",
  },
  .format_buffer = format_ethernet_arp_header,
  .format_trace = format_ethernet_arp_input_trace,
}

(constructor) VLIB_REGISTER_NODE (arp_input_node)

Definition at line 688 of file arp.c.

arp_reply_node

vlib_node_registration_t arp_reply_node

static

Initial value:

=
{
  .function = arp_reply,
  .name = "arp-reply",
  .vector_size = sizeof (u32),
  .n_errors = ETHERNET_ARP_N_ERROR,
  .error_strings = ethernet_arp_error_strings,
  .n_next_nodes = ARP_REPLY_N_NEXT,
  .next_nodes = {
    [ARP_REPLY_NEXT_DROP] = "error-drop",
    [ARP_REPLY_NEXT_REPLY_TX] = "interface-output",
  },
  .format_buffer = format_ethernet_arp_header,
  .format_trace = format_ethernet_arp_input_trace,
}

(constructor) VLIB_REGISTER_NODE (arp_reply_node)

Definition at line 719 of file arp.c.

arp_vft

const ip_neighbor_vft_t arp_vft

static

Initial value:

= {
  .inv_proxy4_add = arp_proxy_add,
  .inv_proxy4_del = arp_proxy_del,
  .inv_proxy4_enable = arp_proxy_disable,
  .inv_proxy4_disable = arp_proxy_disable,
}

Definition at line 869 of file arp.c.

ethernet_arp_error_strings

char* ethernet_arp_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_ethernet_arp_error

}

Definition at line 680 of file arp.c.

ethernet_arp_main

ethernet_arp_main_t ethernet_arp_main

static

Definition at line 62 of file arp.c.

vrrp_prefix

const u8 vrrp_prefix[] = { 0x00, 0x00, 0x5E, 0x00, 0x01 }

static

Definition at line 64 of file arp.c.