mpls_output.c File Reference

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Data Structures
struct	mpls_output_trace_t
struct	mpls_frag_trace_t_
struct	mpls_adj_incomplete_trace_t_
	A struct to hold tracing information for the MPLS label imposition node. More...

Macros
#define	foreach_mpls_output_next
#define	mpls_error(n, s)   s,
#define	foreach_mpls_adj_incomplete_next

Typedefs
typedef struct mpls_frag_trace_t_	mpls_frag_trace_t
typedef struct mpls_adj_incomplete_trace_t_	mpls_adj_incomplete_trace_t
	A struct to hold tracing information for the MPLS label imposition node. More...

Enumerations
enum	mpls_output_mode_t { MPLS_OUTPUT_MODE, MPLS_OUTPUT_MIDCHAIN_MODE }
enum	mpls_output_next_t { MPLS_OUTPUT_N_NEXT }
enum	mpls_frag_next_t {   MPLS_FRAG_NEXT_REWRITE, MPLS_FRAG_NEXT_REWRITE_MIDCHAIN, MPLS_FRAG_NEXT_ICMP_ERROR, MPLS_FRAG_NEXT_DROP,   MPLS_FRAG_N_NEXT }
enum	mpls_adj_incomplete_next_t { MPLS_ADJ_INCOMPLETE_N_NEXT }

Functions
static u8 *	format_mpls_output_trace (u8 *s, va_list *args)
static uword	mpls_output_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, mpls_output_mode_t mode)
VLIB_NODE_FN()	mpls_output_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
VLIB_NODE_FN()	mpls_midchain_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	mpls_frag (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
static u8 *	format_mpls_frag_trace (u8 *s, va_list *args)
VLIB_NODE_FN()	mpls_adj_incomplete_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	Graph node for incomplete MPLS adjacency. More...
static u8 *	format_mpls_adj_incomplete_trace (u8 *s, va_list *args)

Variables
static char *	mpls_error_strings []
vlib_node_registration_t	mpls_output_node
	(constructor) VLIB_REGISTER_NODE (mpls_output_node) More...
vlib_node_registration_t	mpls_midchain_node
	(constructor) VLIB_REGISTER_NODE (mpls_midchain_node) More...
static char *	mpls_frag_error_strings []
vlib_node_registration_t	mpls_frag_node
	(constructor) VLIB_REGISTER_NODE (mpls_frag_node) More...
vlib_node_registration_t	mpls_adj_incomplete_node
	(constructor) VLIB_REGISTER_NODE (mpls_adj_incomplete_node) More...

Macro Definition Documentation

foreach_mpls_adj_incomplete_next

#define foreach_mpls_adj_incomplete_next

Value:

_(DROP, "error-drop")                   \
_(IP4,  "ip4-arp")                      \
_(IP6,  "ip6-discover-neighbor")

Definition at line 545 of file mpls_output.c.

foreach_mpls_output_next

#define foreach_mpls_output_next

Value:

_(DROP, "error-drop")                           \
_(FRAG, "mpls-frag")

Definition at line 35 of file mpls_output.c.

mpls_error

#define mpls_error	(		n,
			s
	)		s,

Typedef Documentation

mpls_adj_incomplete_trace_t

typedef struct mpls_adj_incomplete_trace_t_ mpls_adj_incomplete_trace_t

A struct to hold tracing information for the MPLS label imposition node.

mpls_frag_trace_t

typedef struct mpls_frag_trace_t_ mpls_frag_trace_t

Enumeration Type Documentation

mpls_adj_incomplete_next_t

enum mpls_adj_incomplete_next_t

Enumerator
MPLS_ADJ_INCOMPLETE_N_NEXT

Definition at line 550 of file mpls_output.c.

mpls_frag_next_t

enum mpls_frag_next_t

Enumerator
MPLS_FRAG_NEXT_REWRITE
MPLS_FRAG_NEXT_REWRITE_MIDCHAIN
MPLS_FRAG_NEXT_ICMP_ERROR
MPLS_FRAG_NEXT_DROP
MPLS_FRAG_N_NEXT

Definition at line 384 of file mpls_output.c.

mpls_output_mode_t

enum mpls_output_mode_t

Enumerator
MPLS_OUTPUT_MODE
MPLS_OUTPUT_MIDCHAIN_MODE

Definition at line 30 of file mpls_output.c.

mpls_output_next_t

enum mpls_output_next_t

Enumerator
MPLS_OUTPUT_N_NEXT

Definition at line 39 of file mpls_output.c.

Function Documentation

format_mpls_adj_incomplete_trace()

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

static

Definition at line 636 of file mpls_output.c.

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format_mpls_frag_trace()

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

static

Definition at line 513 of file mpls_output.c.

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format_mpls_output_trace()

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

static

Definition at line 47 of file mpls_output.c.

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mpls_adj_incomplete_node()

VLIB_NODE_FN() mpls_adj_incomplete_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	from_frame
	)

Graph node for incomplete MPLS adjacency.

This node will push traffic to either the v4-arp or v6-nd node based on the next-hop proto of the adj. We pay a cost for this 'routing' node, but an incomplete adj is the exception case.

Definition at line 574 of file mpls_output.c.

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mpls_frag()

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

static

Definition at line 394 of file mpls_output.c.

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mpls_midchain_node()

VLIB_NODE_FN() mpls_midchain_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	from_frame
	)

Definition at line 354 of file mpls_output.c.

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mpls_output_inline()

static uword mpls_output_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, mpls_output_mode_t  mode  )

inlinestatic

Definition at line 61 of file mpls_output.c.

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mpls_output_node()

VLIB_NODE_FN() mpls_output_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	from_frame
	)

Definition at line 332 of file mpls_output.c.

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Variable Documentation

mpls_adj_incomplete_node

vlib_node_registration_t mpls_adj_incomplete_node

Initial value:

= {
  .name = "mpls-adj-incomplete",
  .format_trace = format_mpls_adj_incomplete_trace,
  
  .vector_size = sizeof (u32),
  .n_errors = MPLS_N_ERROR,
  .error_strings = mpls_error_strings,

  .n_next_nodes = MPLS_ADJ_INCOMPLETE_N_NEXT,
  .next_nodes = {
#define _(s,n) 
    foreach_mpls_adj_incomplete_next

  },
}

(constructor) VLIB_REGISTER_NODE (mpls_adj_incomplete_node)

Definition at line 652 of file mpls_output.c.

mpls_error_strings

char* mpls_error_strings[]

static

Initial value:

= {
#define mpls_error(n,s) 


mpls_error (NONE, "no error")
mpls_error (UNKNOWN_PROTOCOL, "unknown protocol")
mpls_error (UNSUPPORTED_VERSION, "unsupported version")
mpls_error (PKTS_DECAP, "MPLS input packets decapsulated")
mpls_error (PKTS_ENCAP, "MPLS output packets encapsulated")
mpls_error (PKTS_NEED_FRAG, "MPLS output packets needs fragmentation")
mpls_error (NO_LABEL, "MPLS no label for fib/dst")
mpls_error (TTL_EXPIRED, "MPLS ttl expired")
mpls_error (S_NOT_SET, "MPLS s-bit not set")
mpls_error (BAD_LABEL, "invalid FIB id in label")
mpls_error (NOT_IP4, "non-ip4 packets dropped")
mpls_error (DISALLOWED_FIB, "disallowed FIB id")
mpls_error (NOT_ENABLED, "MPLS not enabled")
mpls_error (DROP, "MPLS DROP DPO")
mpls_error (PUNT, "MPLS PUNT DPO")

}

Definition at line 326 of file mpls_output.c.

mpls_frag_error_strings

char* mpls_frag_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_ip_frag_error

}

Definition at line 372 of file mpls_output.c.

mpls_frag_node

vlib_node_registration_t mpls_frag_node

Initial value:

= {
    .function = mpls_frag,
    .name = "mpls-frag",
    .vector_size = sizeof (u32),
    .format_trace = format_mpls_frag_trace,
    .type = VLIB_NODE_TYPE_INTERNAL,

    .n_errors = IP_FRAG_N_ERROR,
    .error_strings = mpls_frag_error_strings,

    .n_next_nodes = MPLS_FRAG_N_NEXT,
    .next_nodes = {
        [MPLS_FRAG_NEXT_REWRITE] = "mpls-output",
        [MPLS_FRAG_NEXT_REWRITE_MIDCHAIN] = "mpls-midchain",
        [MPLS_FRAG_NEXT_ICMP_ERROR] = "ip4-icmp-error",
        [MPLS_FRAG_NEXT_DROP] = "mpls-drop"
    },
}

(constructor) VLIB_REGISTER_NODE (mpls_frag_node)

Definition at line 523 of file mpls_output.c.

mpls_midchain_node

vlib_node_registration_t mpls_midchain_node

Initial value:

= {
  .name = "mpls-midchain",
  .vector_size = sizeof (u32),

  .n_errors = MPLS_N_ERROR,
  .error_strings = mpls_error_strings,

  .sibling_of = "mpls-output",
  .format_trace = format_mpls_output_trace,
}

(constructor) VLIB_REGISTER_NODE (mpls_midchain_node)

Definition at line 361 of file mpls_output.c.

mpls_output_node

vlib_node_registration_t mpls_output_node

Initial value:

= {
  .name = "mpls-output",
  
  .vector_size = sizeof (u32),
  .n_errors = MPLS_N_ERROR,
  .error_strings = mpls_error_strings,

  .n_next_nodes = MPLS_OUTPUT_N_NEXT,
  .next_nodes = {
        [MPLS_OUTPUT_NEXT_DROP] = "mpls-drop",
        [MPLS_OUTPUT_NEXT_FRAG] = "mpls-frag",
    },
  .format_trace = format_mpls_output_trace,
}

(constructor) VLIB_REGISTER_NODE (mpls_output_node)

Definition at line 339 of file mpls_output.c.