l2_fwd.c File Reference

Ethernet Forwarding. More...

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Data Structures
struct	l2fwd_main_t
struct	l2fwd_trace_t

Macros
#define	foreach_l2fwd_error

Enumerations
enum	l2fwd_error_t { L2FWD_N_ERROR }
enum	l2fwd_next_t { L2FWD_NEXT_L2_OUTPUT, L2FWD_NEXT_FLOOD, L2FWD_NEXT_DROP, L2FWD_N_NEXT }

Functions
static u8 *	format_l2fwd_trace (u8 *s, va_list *args)
static_always_inline void	l2fwd_process (vlib_main_t *vm, vlib_node_runtime_t *node, l2fwd_main_t *msm, vlib_error_main_t *em, vlib_buffer_t *b0, u32 sw_if_index0, l2fib_entry_result_t *result0, u32 *next0)
	Forward one packet based on the mac table lookup result. More...
static uword	l2fwd_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
clib_error_t *	l2fwd_init (vlib_main_t *vm)
void	l2fwd_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_fwd (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
	Set subinterface forward enable/disable. More...

Variables
l2fwd_main_t	l2fwd_main
static vlib_node_registration_t	l2fwd_node
	(constructor) VLIB_REGISTER_NODE (l2fwd_node) More...
static char *	l2fwd_error_strings []
static vlib_cli_command_t	int_fwd_cli
	(constructor) VLIB_CLI_COMMAND (int_fwd_cli) More...

Detailed Description

Ethernet Forwarding.

Code in this file handles forwarding Layer 2 packets. This file calls the FIB lookup, packet learning and the packet flooding as necessary. Packet is then sent to the next graph node.

Definition in file l2_fwd.c.

Macro Definition Documentation

#define foreach_l2fwd_error

Value:

_(L2FWD,         "L2 forward packets")                  \
_(FLOOD,         "L2 forward misses")                   \
_(HIT,           "L2 forward hits")                     \
_(BVI_BAD_MAC,   "BVI L3 MAC mismatch")                 \
_(BVI_ETHERTYPE, "BVI packet with unhandled ethertype") \
_(FILTER_DROP,   "Filter Mac Drop")                     \
_(REFLECT_DROP,  "Reflection Drop")

Definition at line 85 of file l2_fwd.c.

Enumeration Type Documentation

enum l2fwd_error_t

Enumerator
L2FWD_N_ERROR

Definition at line 94 of file l2_fwd.c.

enum l2fwd_next_t

Enumerator
L2FWD_NEXT_L2_OUTPUT
L2FWD_NEXT_FLOOD
L2FWD_NEXT_DROP
L2FWD_N_NEXT

Definition at line 108 of file l2_fwd.c.

Function Documentation

static u8* format_l2fwd_trace ( u8 *  s, va_list *  args  )

static

Definition at line 68 of file l2_fwd.c.

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

static

Set subinterface forward enable/disable.

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

Definition at line 432 of file l2_fwd.c.

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clib_error_t* l2fwd_init

(

vlib_main_t *

vm

)

Definition at line 393 of file l2_fwd.c.

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static uword l2fwd_node_fn ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 199 of file l2_fwd.c.

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static_always_inline void l2fwd_process	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		l2fwd_main_t *	msm,
		vlib_error_main_t *	em,
		vlib_buffer_t *	b0,
		u32	sw_if_index0,
		l2fib_entry_result_t *	result0,
		u32 *	next0
	)

Forward one packet based on the mac table lookup result.

Definition at line 119 of file l2_fwd.c.

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void l2fwd_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_fwd.c.

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Variable Documentation

vlib_cli_command_t int_fwd_cli

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (int_fwd_cli)

Definition at line 478 of file l2_fwd.c.

char* l2fwd_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_l2fwd_error

}

Definition at line 102 of file l2_fwd.c.

l2fwd_main_t l2fwd_main

Definition at line 81 of file l2_fwd.c.

static vlib_node_registration_t l2fwd_node

static

Initial value:

= {
  .function = l2fwd_node_fn,
  .name = "l2-fwd",
  .vector_size = sizeof (u32),
  .format_trace = format_l2fwd_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = ARRAY_LEN(l2fwd_error_strings),
  .error_strings = l2fwd_error_strings,

  .n_next_nodes = L2FWD_N_NEXT,

  
  .next_nodes = {
    [L2FWD_NEXT_L2_OUTPUT] = "l2-output",
    [L2FWD_NEXT_FLOOD] = "l2-flood",
    [L2FWD_NEXT_DROP] = "error-drop",
  },
}

(constructor) VLIB_REGISTER_NODE (l2fwd_node)

Definition at line 83 of file l2_fwd.c.