l2_flood.c File Reference

Ethernet Flooding. More...

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Data Structures
struct	l2flood_main_t
struct	l2flood_trace_t

Macros
#define	foreach_l2flood_error

Enumerations
enum	l2flood_error_t { L2FLOOD_N_ERROR }
enum	l2flood_next_t { L2FLOOD_NEXT_L2_OUTPUT, L2FLOOD_NEXT_DROP, L2FLOOD_N_NEXT }

Functions
static u8 *	format_l2flood_trace (u8 *s, va_list *args)
static uword	l2flood_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
clib_error_t *	l2flood_init (vlib_main_t *vm)
void	l2flood_register_input_type (vlib_main_t *vm, ethernet_type_t type, u32 node_index)
	Add the L3 input node for this ethertype to the next nodes structure. More...
static clib_error_t *	int_flood (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
	Set subinterface flood enable/disable. More...

Variables
l2flood_main_t	l2flood_main
static vlib_node_registration_t	l2flood_node
	(constructor) VLIB_REGISTER_NODE (l2flood_node) More...
static char *	l2flood_error_strings []
static vlib_cli_command_t	int_flood_cli
	(constructor) VLIB_CLI_COMMAND (int_flood_cli) More...

Detailed Description

Ethernet Flooding.

Flooding uses the packet replication infrastructure to send a copy of the packet to each member interface. Logically the replication infrastructure expects two graph nodes: a prep node that initiates replication and sends the packet to the first destination, and a recycle node that is passed the packet after it has been transmitted.

To decrease the amount of code, l2 flooding implements both functions in the same graph node. This node can tell if is it being called as the "prep" or "recycle" using replication_is_recycled().

Definition in file l2_flood.c.

Macro Definition Documentation

#define foreach_l2flood_error

Value:

_(L2FLOOD,           "L2 flood packets")                        \
_(REPL_FAIL,         "L2 replication failures")                 \
_(NO_MEMBERS,        "L2 replication complete")                 \
_(BVI_BAD_MAC,       "BVI L3 mac mismatch")                     \
_(BVI_ETHERTYPE,     "BVI packet with unhandled ethertype")

Definition at line 94 of file l2_flood.c.

Enumeration Type Documentation

enum l2flood_error_t

Enumerator
L2FLOOD_N_ERROR

Definition at line 101 of file l2_flood.c.

enum l2flood_next_t

Enumerator
L2FLOOD_NEXT_L2_OUTPUT
L2FLOOD_NEXT_DROP
L2FLOOD_N_NEXT

Definition at line 115 of file l2_flood.c.

Function Documentation

static u8* format_l2flood_trace ( u8 *  s, va_list *  args  )

static

Definition at line 77 of file l2_flood.c.

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static clib_error_t* int_flood ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Set subinterface flood enable/disable.

The CLI format is: set interface l2 flood <interface> [disable]

Definition at line 432 of file l2_flood.c.

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clib_error_t* l2flood_init

(

vlib_main_t *

vm

)

Definition at line 388 of file l2_flood.c.

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static uword l2flood_node_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 138 of file l2_flood.c.

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void l2flood_register_input_type	(	vlib_main_t *	vm,
		ethernet_type_t	type,
		u32	node_index
	)

Add the L3 input node for this ethertype to the next nodes structure.

Definition at line 414 of file l2_flood.c.

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Variable Documentation

vlib_cli_command_t int_flood_cli

static

Initial value:

= {
  .path = "set interface l2 flood",
  .short_help = "set interface l2 flood <interface> [disable]",
  .function = int_flood,
}

(constructor) VLIB_CLI_COMMAND (int_flood_cli)

Definition at line 472 of file l2_flood.c.

char* l2flood_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_l2flood_error

}

Definition at line 109 of file l2_flood.c.

l2flood_main_t l2flood_main

Definition at line 90 of file l2_flood.c.

static vlib_node_registration_t l2flood_node

static

Initial value:

= {
  .function = l2flood_node_fn,
  .name = "l2-flood",
  .vector_size = sizeof (u32),
  .format_trace = format_l2flood_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = ARRAY_LEN(l2flood_error_strings),
  .error_strings = l2flood_error_strings,

  .n_next_nodes = L2FLOOD_N_NEXT,

  
  .next_nodes = {
        [L2FLOOD_NEXT_L2_OUTPUT] = "l2-output",
        [L2FLOOD_NEXT_DROP] = "error-drop",
  },
}

(constructor) VLIB_REGISTER_NODE (l2flood_node)

Definition at line 92 of file l2_flood.c.