l2_xcrw.c File Reference

General L2 / L3 cross-connect, used to set up "L2 interface <--> your-favorite-tunnel-encap" tunnels. More...

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Data Structures
struct	l2_xcrw_trace_t

Functions
static u8 *	format_l2_xcrw_trace (u8 *s, va_list *args)
VLIB_NODE_FN()	l2_xcrw_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
clib_error_t *	l2_xcrw_init (vlib_main_t *vm)
static u8 *	format_xcrw_name (u8 *s, va_list *args)
	VNET_DEVICE_CLASS (xcrw_device_class, static)
static u32	create_xcrw_interface (vlib_main_t *vm)
int	vnet_configure_l2_xcrw (vlib_main_t *vm, vnet_main_t *vnm, u32 l2_sw_if_index, u32 tx_fib_index, u8 *rewrite, u32 next_node_index, int is_add)
static clib_error_t *	set_l2_xcrw_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static u8 *	format_l2xcrw (u8 *s, va_list *args)
static clib_error_t *	show_l2xcrw_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)

Variables
l2_xcrw_main_t	l2_xcrw_main
static char *	l2_xcrw_error_strings []
vlib_node_registration_t	l2_xcrw_node
	(constructor) VLIB_REGISTER_NODE (l2_xcrw_node) More...
static vlib_cli_command_t	set_l2_xcrw_command
	(constructor) VLIB_CLI_COMMAND (set_l2_xcrw_command) More...
static vlib_cli_command_t	show_l2xcrw_command
	(constructor) VLIB_CLI_COMMAND (show_l2xcrw_command) More...

Detailed Description

General L2 / L3 cross-connect, used to set up "L2 interface <--> your-favorite-tunnel-encap" tunnels.

We set up a typical L2 cross-connect or (future) bridge to hook L2 interface(s) up to the L3 stack in arbitrary ways.

Each l2_xcrw adjacency specifies 3 things:

1. The next graph node (presumably in the L3 stack) to process the (L2 -> L3) packet
2. A new value for vnet_buffer(b)->sw_if_indexVLIB_TX,
3. A rewrite string to apply.

Example: to cross-connect an L2 interface or (future) bridge to an mpls-o-gre tunnel, set up the L2 rewrite string as shown in mpls_gre_rewrite, and use "mpls-post-rewrite" to fix the GRE IP header checksum and length fields.

Definition in file l2_xcrw.c.

Function Documentation

create_xcrw_interface()

static u32 create_xcrw_interface ( vlib_main_t *  vm )

static

Definition at line 291 of file l2_xcrw.c.

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format_l2_xcrw_trace()

static u8* format_l2_xcrw_trace ( u8 *  s, va_list *  args  )

static

Definition at line 49 of file l2_xcrw.c.

format_l2xcrw()

static u8* format_l2xcrw ( u8 *  s, va_list *  args  )

static

Definition at line 512 of file l2_xcrw.c.

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format_xcrw_name()

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

static

Definition at line 276 of file l2_xcrw.c.

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l2_xcrw_init()

clib_error_t* l2_xcrw_init

(

vlib_main_t *

vm

)

Definition at line 262 of file l2_xcrw.c.

l2_xcrw_node()

VLIB_NODE_FN() l2_xcrw_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 72 of file l2_xcrw.c.

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set_l2_xcrw_command_fn()

static clib_error_t* set_l2_xcrw_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 392 of file l2_xcrw.c.

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show_l2xcrw_command_fn()

static clib_error_t* show_l2xcrw_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 556 of file l2_xcrw.c.

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vnet_configure_l2_xcrw()

int vnet_configure_l2_xcrw	(	vlib_main_t *	vm,
		vnet_main_t *	vnm,
		u32	l2_sw_if_index,
		u32	tx_fib_index,
		u8 *	rewrite,
		u32	next_node_index,
		int	is_add
	)

Definition at line 321 of file l2_xcrw.c.

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VNET_DEVICE_CLASS()

VNET_DEVICE_CLASS	(	xcrw_device_class	,
		static
	)

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Variable Documentation

l2_xcrw_error_strings

char* l2_xcrw_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_l2_xcrw_error

}

Definition at line 66 of file l2_xcrw.c.

l2_xcrw_main

l2_xcrw_main_t l2_xcrw_main

Definition at line 63 of file l2_xcrw.c.

l2_xcrw_node

vlib_node_registration_t l2_xcrw_node

Initial value:

= {
  .name = "l2-xcrw",
  .vector_size = sizeof (u32),
  .format_trace = format_l2_xcrw_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = ARRAY_LEN(l2_xcrw_error_strings),
  .error_strings = l2_xcrw_error_strings,

  .n_next_nodes = L2_XCRW_N_NEXT,

  
  .next_nodes = {
        [L2_XCRW_NEXT_DROP] = "error-drop",
  },
}

(constructor) VLIB_REGISTER_NODE (l2_xcrw_node)

Definition at line 242 of file l2_xcrw.c.

set_l2_xcrw_command

vlib_cli_command_t set_l2_xcrw_command

static

Initial value:

= {
  .path = "set interface l2 xcrw",
  .short_help =
  "set interface l2 xcrw <interface> next <node-name>\n"
  "    [del] [tx-fib-id <id>] [ipv6] rw <hex-bytes>",
  .function = set_l2_xcrw_command_fn,
}

(constructor) VLIB_CLI_COMMAND (set_l2_xcrw_command)

Definition at line 500 of file l2_xcrw.c.

show_l2xcrw_command

vlib_cli_command_t show_l2xcrw_command

static

Initial value:

= {
  .path = "show l2xcrw",
  .short_help = "show l2xcrw",
  .function = show_l2xcrw_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_l2xcrw_command)

Definition at line 589 of file l2_xcrw.c.