mpls_tunnel.c File Reference

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Data Structures
struct	mpls_tunnel_trace_t_
	Packet trace structure. More...
struct	mpls_tunnel_collect_forwarding_ctx_t_

Typedefs
typedef struct mpls_tunnel_trace_t_	mpls_tunnel_trace_t
	Packet trace structure. More...
typedef struct mpls_tunnel_collect_forwarding_ctx_t_	mpls_tunnel_collect_forwarding_ctx_t

Enumerations
enum	mpls_tunnel_encap_next_t { MPLS_TUNNEL_ENCAP_NEXT_L2_MIDCHAIN, MPLS_TUNNEL_ENCAP_N_NEXT }

Functions
static u8 *	format_mpls_tunnel_tx_trace (u8 *s, va_list *args)
VLIB_NODE_FN()	mpls_tunnel_tx (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	TX function. More...
static mpls_tunnel_t *	mpls_tunnel_get_from_sw_if_index (u32 sw_if_index)
	Get a tunnel object from a SW interface index. More...
static u8 *	mpls_tunnel_build_rewrite_i (void)
	Build a rewrite string for the MPLS tunnel. More...
static u8 *	mpls_tunnel_build_rewrite (vnet_main_t *vnm, u32 sw_if_index, vnet_link_t link_type, const void *dst_address)
	Build a rewrite string for the MPLS tunnel. More...
static fib_path_list_walk_rc_t	mpls_tunnel_collect_forwarding (fib_node_index_t pl_index, fib_node_index_t path_index, void *arg)
static void	mpls_tunnel_mk_lb (mpls_tunnel_t *mt, vnet_link_t linkt, fib_forward_chain_type_t fct, dpo_id_t *dpo_lb)
static void	mpls_tunnel_stack (adj_index_t ai)
	mpls_tunnel_stack More...
static adj_walk_rc_t	mpls_adj_walk_cb (adj_index_t ai, void *ctx)
	Call back when restacking all adjacencies on a MPLS interface. More...
static void	mpls_tunnel_restack (mpls_tunnel_t *mt)
static clib_error_t *	mpls_tunnel_admin_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
static void	mpls_tunnel_fixup (vlib_main_t *vm, const ip_adjacency_t *adj, vlib_buffer_t *b0, const void *data)
	Fixup the adj rewrite post encap. More...
static void	mpls_tunnel_update_adj (vnet_main_t *vnm, u32 sw_if_index, adj_index_t ai)
static u8 *	format_mpls_tunnel_name (u8 *s, va_list *args)
static u8 *	format_mpls_tunnel_device (u8 *s, va_list *args)
	VNET_DEVICE_CLASS (mpls_tunnel_class)
	VNET_HW_INTERFACE_CLASS (mpls_tunnel_hw_interface_class)
const mpls_tunnel_t *	mpls_tunnel_get (u32 mti)
void	mpls_tunnel_walk (mpls_tunnel_walk_cb_t cb, void *ctx)
	Walk all the MPLS tunnels. More...
void	vnet_mpls_tunnel_del (u32 sw_if_index)
	Delete an MPLS tunnel. More...
u32	vnet_mpls_tunnel_create (u8 l2_only, u8 is_multicast, u8 *tag)
	Create a new MPLS tunnel. More...
void	vnet_mpls_tunnel_path_add (u32 sw_if_index, fib_route_path_t *rpaths)
	Add a path to an MPLS tunnel. More...
int	vnet_mpls_tunnel_path_remove (u32 sw_if_index, fib_route_path_t *rpaths)
	remove a path from a tunnel. More...
int	vnet_mpls_tunnel_get_index (u32 sw_if_index)
	return the tunnel index from the sw_if_index More...
static clib_error_t *	vnet_create_mpls_tunnel_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static u8 *	format_mpls_tunnel (u8 *s, va_list *args)
static clib_error_t *	show_mpls_tunnel_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static mpls_tunnel_t *	mpls_tunnel_from_fib_node (fib_node_t *node)
static fib_node_back_walk_rc_t	mpls_tunnel_back_walk (fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
	Function definition to backwalk a FIB node. More...
static fib_node_t *	mpls_tunnel_fib_node_get (fib_node_index_t index)
	Function definition to get a FIB node from its index. More...
static void	mpls_tunnel_last_lock_gone (fib_node_t *node)
	Function definition to inform the FIB node that its last lock has gone. More...
static clib_error_t *	mpls_tunnel_init (vlib_main_t *vm)

Variables
static mpls_tunnel_t *	mpls_tunnel_pool
	pool of tunnel instances More...
static u32 *	mpls_tunnel_db
	DB of SW index to tunnel index. More...
static const char *	mpls_tunnel_attribute_names [] = MPLS_TUNNEL_ATTRIBUTES
	MPLS tunnel flags strings. More...
vlib_node_registration_t	mpls_tunnel_tx
	(constructor) VLIB_REGISTER_NODE (mpls_tunnel_tx) More...
static vlib_cli_command_t	create_mpls_tunnel_command
	(constructor) VLIB_CLI_COMMAND (create_mpls_tunnel_command) More...
static vlib_cli_command_t	show_mpls_tunnel_command
	(constructor) VLIB_CLI_COMMAND (show_mpls_tunnel_command) More...
static const fib_node_vft_t	mpls_vft

Typedef Documentation

mpls_tunnel_collect_forwarding_ctx_t

typedef struct mpls_tunnel_collect_forwarding_ctx_t_ mpls_tunnel_collect_forwarding_ctx_t

mpls_tunnel_trace_t

typedef struct mpls_tunnel_trace_t_ mpls_tunnel_trace_t

Packet trace structure.

Enumeration Type Documentation

mpls_tunnel_encap_next_t

enum mpls_tunnel_encap_next_t

Enumerator
MPLS_TUNNEL_ENCAP_NEXT_L2_MIDCHAIN
MPLS_TUNNEL_ENCAP_N_NEXT

Definition at line 66 of file mpls_tunnel.c.

Function Documentation

format_mpls_tunnel()

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

static

Definition at line 938 of file mpls_tunnel.c.

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format_mpls_tunnel_device()

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

static

Definition at line 582 of file mpls_tunnel.c.

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format_mpls_tunnel_name()

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

static

Definition at line 575 of file mpls_tunnel.c.

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format_mpls_tunnel_tx_trace()

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

static

Definition at line 55 of file mpls_tunnel.c.

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mpls_adj_walk_cb()

static adj_walk_rc_t mpls_adj_walk_cb ( adj_index_t  ai, void *  ctx  )

static

Call back when restacking all adjacencies on a MPLS interface.

Definition at line 437 of file mpls_tunnel.c.

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mpls_tunnel_admin_up_down()

static clib_error_t* mpls_tunnel_admin_up_down ( vnet_main_t *  vnm, u32  hw_if_index, u32  flags  )

static

Definition at line 483 of file mpls_tunnel.c.

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mpls_tunnel_back_walk()

static fib_node_back_walk_rc_t mpls_tunnel_back_walk ( fib_node_t *  node, fib_node_back_walk_ctx_t *  ctx  )

static

Function definition to backwalk a FIB node.

Definition at line 1046 of file mpls_tunnel.c.

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mpls_tunnel_build_rewrite()

static u8* mpls_tunnel_build_rewrite ( vnet_main_t *  vnm, u32  sw_if_index, vnet_link_t  link_type, const void *  dst_address  )

static

Build a rewrite string for the MPLS tunnel.

Definition at line 219 of file mpls_tunnel.c.

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mpls_tunnel_build_rewrite_i()

static u8* mpls_tunnel_build_rewrite_i ( void  )

static

Build a rewrite string for the MPLS tunnel.

Definition at line 199 of file mpls_tunnel.c.

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mpls_tunnel_collect_forwarding()

static fib_path_list_walk_rc_t mpls_tunnel_collect_forwarding ( fib_node_index_t  pl_index, fib_node_index_t  path_index, void *  arg  )

static

Definition at line 235 of file mpls_tunnel.c.

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mpls_tunnel_fib_node_get()

static fib_node_t* mpls_tunnel_fib_node_get ( fib_node_index_t  index )

static

Function definition to get a FIB node from its index.

Definition at line 1058 of file mpls_tunnel.c.

mpls_tunnel_fixup()

static void mpls_tunnel_fixup ( vlib_main_t *  vm, const ip_adjacency_t *  adj, vlib_buffer_t *  b0, const void *  data  )

static

Fixup the adj rewrite post encap.

This is a no-op since the rewrite is a stack of labels.

Definition at line 513 of file mpls_tunnel.c.

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mpls_tunnel_from_fib_node()

static mpls_tunnel_t* mpls_tunnel_from_fib_node ( fib_node_t *  node )

static

Definition at line 1035 of file mpls_tunnel.c.

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mpls_tunnel_get()

const mpls_tunnel_t* mpls_tunnel_get

(

u32

mti

)

Definition at line 606 of file mpls_tunnel.c.

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mpls_tunnel_get_from_sw_if_index()

static mpls_tunnel_t* mpls_tunnel_get_from_sw_if_index ( u32  sw_if_index )

static

Get a tunnel object from a SW interface index.

Definition at line 185 of file mpls_tunnel.c.

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mpls_tunnel_init()

static clib_error_t* mpls_tunnel_init ( vlib_main_t *  vm )

static

Definition at line 1091 of file mpls_tunnel.c.

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mpls_tunnel_last_lock_gone()

static void mpls_tunnel_last_lock_gone ( fib_node_t *  node )

static

Function definition to inform the FIB node that its last lock has gone.

Definition at line 1071 of file mpls_tunnel.c.

mpls_tunnel_mk_lb()

static void mpls_tunnel_mk_lb ( mpls_tunnel_t *  mt, vnet_link_t  linkt, fib_forward_chain_type_t  fct, dpo_id_t *  dpo_lb  )

static

Definition at line 277 of file mpls_tunnel.c.

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mpls_tunnel_restack()

static void mpls_tunnel_restack ( mpls_tunnel_t *  mt )

static

Definition at line 446 of file mpls_tunnel.c.

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mpls_tunnel_stack()

static void mpls_tunnel_stack ( adj_index_t  ai )

static

mpls_tunnel_stack

'stack' (resolve the recursion for) the tunnel's midchain adjacency

Definition at line 371 of file mpls_tunnel.c.

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mpls_tunnel_tx()

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

TX function.

Only called L2. L3 traffic uses the adj-midchains

Definition at line 75 of file mpls_tunnel.c.

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mpls_tunnel_update_adj()

static void mpls_tunnel_update_adj ( vnet_main_t *  vnm, u32  sw_if_index, adj_index_t  ai  )

static

Definition at line 527 of file mpls_tunnel.c.

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mpls_tunnel_walk()

void mpls_tunnel_walk	(	mpls_tunnel_walk_cb_t	cb,
		void *	ctx
	)

Walk all the MPLS tunnels.

Definition at line 615 of file mpls_tunnel.c.

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show_mpls_tunnel_command_fn()

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

static

Definition at line 972 of file mpls_tunnel.c.

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vnet_create_mpls_tunnel_command_fn()

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

static

Definition at line 842 of file mpls_tunnel.c.

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VNET_DEVICE_CLASS()

VNET_DEVICE_CLASS

(

mpls_tunnel_class

)

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VNET_HW_INTERFACE_CLASS()

VNET_HW_INTERFACE_CLASS

(

mpls_tunnel_hw_interface_class

)

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vnet_mpls_tunnel_create()

u32 vnet_mpls_tunnel_create	(	u8	l2_only,
		u8	is_multicast,
		u8 *	description
	)

Create a new MPLS tunnel.

Returns

the SW Interface index of the newly created tuneel

Definition at line 648 of file mpls_tunnel.c.

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vnet_mpls_tunnel_del()

void vnet_mpls_tunnel_del

(

u32

sw_if_index

)

Delete an MPLS tunnel.

Definition at line 627 of file mpls_tunnel.c.

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vnet_mpls_tunnel_get_index()

int vnet_mpls_tunnel_get_index

(

u32

sw_if_index

)

return the tunnel index from the sw_if_index

Definition at line 829 of file mpls_tunnel.c.

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vnet_mpls_tunnel_path_add()

void vnet_mpls_tunnel_path_add	(	u32	sw_if_index,
		fib_route_path_t *	rpaths
	)

Add a path to an MPLS tunnel.

Definition at line 703 of file mpls_tunnel.c.

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vnet_mpls_tunnel_path_remove()

int vnet_mpls_tunnel_path_remove	(	u32	sw_if_index,
		fib_route_path_t *	rpath
	)

remove a path from a tunnel.

Returns

the number of remaining paths. 0 implies the tunnel can be deleted

Definition at line 759 of file mpls_tunnel.c.

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Variable Documentation

create_mpls_tunnel_command

vlib_cli_command_t create_mpls_tunnel_command

static

Initial value:

= {
  .path = "mpls tunnel",
  .short_help =
  "mpls tunnel [multicast] [l2-only] via [next-hop-address] [next-hop-interface] [next-hop-table <value>] [weight <value>] [preference <value>] [udp-encap-id <value>] [ip4-lookup-in-table <value>] [ip6-lookup-in-table <value>] [mpls-lookup-in-table <value>] [resolve-via-host] [resolve-via-connected] [rx-ip4 <interface>] [out-labels <value value value>]",
  .function = vnet_create_mpls_tunnel_command_fn,
}

(constructor) VLIB_CLI_COMMAND (create_mpls_tunnel_command)

Definition at line 930 of file mpls_tunnel.c.

mpls_tunnel_attribute_names

const char* mpls_tunnel_attribute_names[] = MPLS_TUNNEL_ATTRIBUTES

static

MPLS tunnel flags strings.

Definition at line 41 of file mpls_tunnel.c.

mpls_tunnel_db

u32* mpls_tunnel_db

static

DB of SW index to tunnel index.

Definition at line 36 of file mpls_tunnel.c.

mpls_tunnel_pool

mpls_tunnel_t* mpls_tunnel_pool

static

pool of tunnel instances

Definition at line 31 of file mpls_tunnel.c.

mpls_tunnel_tx

vlib_node_registration_t mpls_tunnel_tx

Initial value:

=
{
  .name = "mpls-tunnel-tx",
  .vector_size = sizeof (u32),
  .format_trace = format_mpls_tunnel_tx_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = 0,
  .n_next_nodes = 0,
  
  
  
  
}

(constructor) VLIB_REGISTER_NODE (mpls_tunnel_tx)

Definition at line 167 of file mpls_tunnel.c.

mpls_vft

const fib_node_vft_t mpls_vft

static

Initial value:

= {
    .fnv_get = mpls_tunnel_fib_node_get,
    .fnv_last_lock = mpls_tunnel_last_lock_gone,
    .fnv_back_walk = mpls_tunnel_back_walk,
}

Definition at line 1084 of file mpls_tunnel.c.

show_mpls_tunnel_command

vlib_cli_command_t show_mpls_tunnel_command

static

Initial value:

= {
    .path = "show mpls tunnel",
    .function = show_mpls_tunnel_command_fn,
}

(constructor) VLIB_CLI_COMMAND (show_mpls_tunnel_command)

Definition at line 1029 of file mpls_tunnel.c.