fib_path.c File Reference

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Data Structures
struct	fib_path_t_
	A FIB path. More...

Macros
#define	FIB_PATH_TYPE_MAX   (FIB_PATH_TYPE_LAST + 1)
	The maximum number of path_types. More...
#define	FIB_PATH_TYPES
#define	FOR_EACH_FIB_PATH_TYPE(_item)
#define	FIB_PATH_OPER_ATTRIBUTE_MAX   (FIB_PATH_OPER_ATTRIBUTE_LAST + 1)
	The maximum number of path operational attributes. More...
#define	FIB_PATH_OPER_ATTRIBUTES
#define	FOR_EACH_FIB_PATH_OPER_ATTRIBUTE(_item)
#define	FIB_PATH_DBG(_p, _fmt, _args...)

Typedefs
typedef enum fib_path_type_t_	fib_path_type_t
	Enurmeration of path types. More...
typedef enum fib_path_oper_attribute_t_	fib_path_oper_attribute_t
	Enurmeration of path operational (i.e. More...
typedef enum fib_path_oper_flags_t_	fib_path_oper_flags_t
	Path flags from the attributes. More...
typedef struct fib_path_t_	fib_path_t
	A FIB path. More...

Enumerations
enum	fib_path_type_t_ {   FIB_PATH_TYPE_FIRST = 0, FIB_PATH_TYPE_ATTACHED_NEXT_HOP = FIB_PATH_TYPE_FIRST, FIB_PATH_TYPE_ATTACHED, FIB_PATH_TYPE_RECURSIVE,   FIB_PATH_TYPE_SPECIAL, FIB_PATH_TYPE_EXCLUSIVE, FIB_PATH_TYPE_DEAG, FIB_PATH_TYPE_INTF_RX,   FIB_PATH_TYPE_UDP_ENCAP, FIB_PATH_TYPE_RECEIVE, FIB_PATH_TYPE_BIER_IMP, FIB_PATH_TYPE_BIER_TABLE,   FIB_PATH_TYPE_BIER_FMASK, FIB_PATH_TYPE_DVR, FIB_PATH_TYPE_LAST = FIB_PATH_TYPE_BIER_FMASK }
	Enurmeration of path types. More...
enum	fib_path_oper_attribute_t_ {   FIB_PATH_OPER_ATTRIBUTE_FIRST = 0, FIB_PATH_OPER_ATTRIBUTE_RECURSIVE_LOOP = FIB_PATH_OPER_ATTRIBUTE_FIRST, FIB_PATH_OPER_ATTRIBUTE_RESOLVED, FIB_PATH_OPER_ATTRIBUTE_ATTACHED,   FIB_PATH_OPER_ATTRIBUTE_DROP, FIB_PATH_OPER_ATTRIBUTE_LAST = FIB_PATH_OPER_ATTRIBUTE_DROP }
	Enurmeration of path operational (i.e. More...
enum	fib_path_oper_flags_t_ {   FIB_PATH_OPER_FLAG_NONE = 0, FIB_PATH_OPER_FLAG_RECURSIVE_LOOP = (1 << FIB_PATH_OPER_ATTRIBUTE_RECURSIVE_LOOP), FIB_PATH_OPER_FLAG_DROP = (1 << FIB_PATH_OPER_ATTRIBUTE_DROP), FIB_PATH_OPER_FLAG_RESOLVED = (1 << FIB_PATH_OPER_ATTRIBUTE_RESOLVED),   FIB_PATH_OPER_FLAG_ATTACHED = (1 << FIB_PATH_OPER_ATTRIBUTE_ATTACHED) }
	Path flags from the attributes. More...

Functions
static fib_path_t *	fib_path_get (fib_node_index_t index)
static fib_node_index_t	fib_path_get_index (fib_path_t *path)
static fib_node_t *	fib_path_get_node (fib_node_index_t index)
static fib_path_t *	fib_path_from_fib_node (fib_node_t *node)
u8 *	format_fib_path (u8 *s, va_list *args)
u8 *	fib_path_format (fib_node_index_t pi, u8 *s)
static void	fib_path_last_lock_gone (fib_node_t *node)
static const adj_index_t	fib_path_attached_next_hop_get_adj (fib_path_t *path, vnet_link_t link)
static void	fib_path_attached_next_hop_set (fib_path_t *path)
static const adj_index_t	fib_path_attached_get_adj (fib_path_t *path, vnet_link_t link)
static void	fib_path_recursive_adj_update (fib_path_t *path, fib_forward_chain_type_t fct, dpo_id_t *dpo)
static void	fib_path_bier_fmask_update (fib_path_t *path, dpo_id_t *dpo)
static int	fib_path_is_permanent_drop (fib_path_t *path)
static void	fib_path_unresolve (fib_path_t *path)
static fib_forward_chain_type_t	fib_path_to_chain_type (const fib_path_t *path)
static fib_node_back_walk_rc_t	fib_path_back_walk_notify (fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
static void	fib_path_memory_show (void)
static fib_path_cfg_flags_t	fib_path_route_flags_to_cfg_flags (const fib_route_path_t *rpath)
fib_node_index_t	fib_path_create (fib_node_index_t pl_index, const fib_route_path_t *rpath)
fib_node_index_t	fib_path_create_special (fib_node_index_t pl_index, dpo_proto_t nh_proto, fib_path_cfg_flags_t flags, const dpo_id_t *dpo)
fib_node_index_t	fib_path_copy (fib_node_index_t path_index, fib_node_index_t path_list_index)
void	fib_path_destroy (fib_node_index_t path_index)
uword	fib_path_hash (fib_node_index_t path_index)
static int	fib_path_cmp_i (const fib_path_t *path1, const fib_path_t *path2)
int	fib_path_cmp_for_sort (void *v1, void *v2)
int	fib_path_cmp (fib_node_index_t pi1, fib_node_index_t pi2)
int	fib_path_cmp_w_route_path (fib_node_index_t path_index, const fib_route_path_t *rpath)
int	fib_path_recursive_loop_detect (fib_node_index_t path_index, fib_node_index_t **entry_indicies)
int	fib_path_resolve (fib_node_index_t path_index)
u32	fib_path_get_resolving_interface (fib_node_index_t path_index)
index_t	fib_path_get_resolving_index (fib_node_index_t path_index)
adj_index_t	fib_path_get_adj (fib_node_index_t path_index)
u16	fib_path_get_weight (fib_node_index_t path_index)
u16	fib_path_get_preference (fib_node_index_t path_index)
u32	fib_path_get_rpf_id (fib_node_index_t path_index)
void	fib_path_contribute_urpf (fib_node_index_t path_index, index_t urpf)
	Contribute the path's adjacency to the list passed. More...
void	fib_path_stack_mpls_disp (fib_node_index_t path_index, dpo_proto_t payload_proto, fib_mpls_lsp_mode_t mode, dpo_id_t *dpo)
void	fib_path_contribute_forwarding (fib_node_index_t path_index, fib_forward_chain_type_t fct, dpo_id_t *dpo)
load_balance_path_t *	fib_path_append_nh_for_multipath_hash (fib_node_index_t path_index, fib_forward_chain_type_t fct, load_balance_path_t *hash_key)
int	fib_path_is_recursive_constrained (fib_node_index_t path_index)
int	fib_path_is_exclusive (fib_node_index_t path_index)
int	fib_path_is_deag (fib_node_index_t path_index)
int	fib_path_is_resolved (fib_node_index_t path_index)
int	fib_path_is_looped (fib_node_index_t path_index)
fib_path_list_walk_rc_t	fib_path_encode (fib_node_index_t path_list_index, fib_node_index_t path_index, void *ctx)
dpo_proto_t	fib_path_get_proto (fib_node_index_t path_index)
void	fib_path_module_init (void)
static clib_error_t *	show_fib_path_command (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)

Variables
static const char *	fib_path_type_names [] = FIB_PATH_TYPES
static const char *	fib_path_oper_attribute_names [] = FIB_PATH_OPER_ATTRIBUTES
static const char *	fib_path_cfg_attribute_names [] = FIB_PATH_CFG_ATTRIBUTES
static fib_path_t *	fib_path_pool
static const fib_node_vft_t	fib_path_vft
static vlib_cli_command_t	show_fib_path
	(constructor) VLIB_CLI_COMMAND (show_fib_path) More...

Macro Definition Documentation

#define FIB_PATH_DBG	(		_p,
			_fmt,
			_args...
	)

Definition at line 426 of file fib_path.c.

#define FIB_PATH_OPER_ATTRIBUTE_MAX   (FIB_PATH_OPER_ATTRIBUTE_LAST + 1)

The maximum number of path operational attributes.

Definition at line 171 of file fib_path.c.

#define FIB_PATH_OPER_ATTRIBUTES

Value:

{                                       \
    [FIB_PATH_OPER_ATTRIBUTE_RECURSIVE_LOOP] = "recursive-loop",        \
    [FIB_PATH_OPER_ATTRIBUTE_RESOLVED]       = "resolved",              \
    [FIB_PATH_OPER_ATTRIBUTE_DROP]           = "drop",                  \
}

Definition at line 173 of file fib_path.c.

#define FIB_PATH_TYPE_MAX   (FIB_PATH_TYPE_LAST + 1)

The maximum number of path_types.

Definition at line 115 of file fib_path.c.

#define FIB_PATH_TYPES

Value:

{                                       \
    [FIB_PATH_TYPE_ATTACHED_NEXT_HOP] = "attached-nexthop",     \
    [FIB_PATH_TYPE_ATTACHED]          = "attached",             \
    [FIB_PATH_TYPE_RECURSIVE]         = "recursive",            \
    [FIB_PATH_TYPE_SPECIAL]           = "special",              \
    [FIB_PATH_TYPE_EXCLUSIVE]         = "exclusive",            \
    [FIB_PATH_TYPE_DEAG]              = "deag",                 \
    [FIB_PATH_TYPE_INTF_RX]           = "intf-rx",              \
    [FIB_PATH_TYPE_UDP_ENCAP]         = "udp-encap",            \
    [FIB_PATH_TYPE_RECEIVE]           = "receive",              \
    [FIB_PATH_TYPE_BIER_IMP]          = "bier-imp",             \
    [FIB_PATH_TYPE_BIER_TABLE]        = "bier-table",           \
    [FIB_PATH_TYPE_BIER_FMASK]        = "bier-fmask",           \
    [FIB_PATH_TYPE_DVR]               = "dvr",                  \
}

Definition at line 117 of file fib_path.c.

#define FOR_EACH_FIB_PATH_OPER_ATTRIBUTE

(

_item

)

Value:

for (_item = FIB_PATH_OPER_ATTRIBUTE_FIRST; \
         _item <= FIB_PATH_OPER_ATTRIBUTE_LAST; \
         _item++)

Definition at line 179 of file fib_path.c.

#define FOR_EACH_FIB_PATH_TYPE

(

_item

)

Value:

for (_item = FIB_PATH_TYPE_FIRST;           \
         _item <= FIB_PATH_TYPE_LAST;           \
         _item++)

Definition at line 133 of file fib_path.c.

Typedef Documentation

typedef enum fib_path_oper_attribute_t_ fib_path_oper_attribute_t

Enurmeration of path operational (i.e.

derived) attributes

typedef enum fib_path_oper_flags_t_ fib_path_oper_flags_t

Path flags from the attributes.

typedef struct fib_path_t_ fib_path_t

A FIB path.

typedef enum fib_path_type_t_ fib_path_type_t

Enurmeration of path types.

Enumeration Type Documentation

enum fib_path_oper_attribute_t_

Enurmeration of path operational (i.e.

derived) attributes

Enumerator
FIB_PATH_OPER_ATTRIBUTE_FIRST	Marker. Add new types after this one.
FIB_PATH_OPER_ATTRIBUTE_RECURSIVE_LOOP	The path forms part of a recursive loop.
FIB_PATH_OPER_ATTRIBUTE_RESOLVED	The path is resolved.
FIB_PATH_OPER_ATTRIBUTE_ATTACHED	The path is attached, despite what the next-hop may say.
FIB_PATH_OPER_ATTRIBUTE_DROP	The path has become a permanent drop.
FIB_PATH_OPER_ATTRIBUTE_LAST	Marker. Add new types before this one, then update it.

Definition at line 141 of file fib_path.c.

enum fib_path_oper_flags_t_

Path flags from the attributes.

Enumerator
FIB_PATH_OPER_FLAG_NONE
FIB_PATH_OPER_FLAG_RECURSIVE_LOOP
FIB_PATH_OPER_FLAG_DROP
FIB_PATH_OPER_FLAG_RESOLVED
FIB_PATH_OPER_FLAG_ATTACHED

Definition at line 187 of file fib_path.c.

enum fib_path_type_t_

Enurmeration of path types.

Enumerator
FIB_PATH_TYPE_FIRST	Marker. Add new types after this one.
FIB_PATH_TYPE_ATTACHED_NEXT_HOP	Attached-nexthop. An interface and a nexthop are known.
FIB_PATH_TYPE_ATTACHED	attached. Only the interface is known.
FIB_PATH_TYPE_RECURSIVE	recursive. Only the next-hop is known.
FIB_PATH_TYPE_SPECIAL	special. nothing is known. so we drop.
FIB_PATH_TYPE_EXCLUSIVE	exclusive. user provided adj.
FIB_PATH_TYPE_DEAG	deag. Link to a lookup adj in the next table
FIB_PATH_TYPE_INTF_RX	interface receive.
FIB_PATH_TYPE_UDP_ENCAP	Path resolves via a UDP encap object.
FIB_PATH_TYPE_RECEIVE	receive. it's for-us.
FIB_PATH_TYPE_BIER_IMP	bier-imp. it's via a BIER imposition.
FIB_PATH_TYPE_BIER_TABLE	bier-fmask. it's via a BIER ECMP-table.
FIB_PATH_TYPE_BIER_FMASK	bier-fmask. it's via a BIER f-mask.
FIB_PATH_TYPE_DVR	via a DVR.
FIB_PATH_TYPE_LAST	Marker. Add new types before this one, then update it.

Definition at line 49 of file fib_path.c.

Function Documentation

load_balance_path_t* fib_path_append_nh_for_multipath_hash	(	fib_node_index_t	path_index,
		fib_forward_chain_type_t	fct,
		load_balance_path_t *	hash_key
	)

Definition at line 2501 of file fib_path.c.

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static const adj_index_t fib_path_attached_get_adj ( fib_path_t *  path, vnet_link_t  link  )

static

Definition at line 692 of file fib_path.c.

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static const adj_index_t fib_path_attached_next_hop_get_adj ( fib_path_t *  path, vnet_link_t  link  )

static

Definition at line 635 of file fib_path.c.

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static void fib_path_attached_next_hop_set ( fib_path_t *  path )

static

Definition at line 662 of file fib_path.c.

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

static

Definition at line 962 of file fib_path.c.

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static void fib_path_bier_fmask_update ( fib_path_t *  path, dpo_id_t *  dpo  )

static

Definition at line 825 of file fib_path.c.

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int fib_path_cmp	(	fib_node_index_t	pi1,
		fib_node_index_t	pi2
	)

Definition at line 1621 of file fib_path.c.

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int fib_path_cmp_for_sort	(	void *	v1,
		void *	v2
	)

Definition at line 1594 of file fib_path.c.

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static int fib_path_cmp_i ( const fib_path_t *  path1, const fib_path_t *  path2  )

static

Definition at line 1501 of file fib_path.c.

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int fib_path_cmp_w_route_path	(	fib_node_index_t	path_index,
		const fib_route_path_t *	rpath
	)

Definition at line 1633 of file fib_path.c.

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void fib_path_contribute_forwarding	(	fib_node_index_t	path_index,
		fib_forward_chain_type_t	fct,
		dpo_id_t *	dpo
	)

Definition at line 2291 of file fib_path.c.

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void fib_path_contribute_urpf	(	fib_node_index_t	path_index,
		index_t	urpf
	)

Contribute the path's adjacency to the list passed.

By calling this function over all paths, recursively, a child can construct its full set of forwarding adjacencies, and hence its uRPF list.

Definition at line 2173 of file fib_path.c.

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fib_node_index_t fib_path_copy	(	fib_node_index_t	path_index,
		fib_node_index_t	path_list_index
	)

Definition at line 1429 of file fib_path.c.

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fib_node_index_t fib_path_create	(	fib_node_index_t	pl_index,
		const fib_route_path_t *	rpath
	)

Definition at line 1249 of file fib_path.c.

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fib_node_index_t fib_path_create_special	(	fib_node_index_t	pl_index,
		dpo_proto_t	nh_proto,
		fib_path_cfg_flags_t	flags,
		const dpo_id_t *	dpo
	)

Definition at line 1383 of file fib_path.c.

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void fib_path_destroy

(

fib_node_index_t

path_index

)

Definition at line 1462 of file fib_path.c.

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fib_path_list_walk_rc_t fib_path_encode	(	fib_node_index_t	path_list_index,
		fib_node_index_t	path_index,
		void *	ctx
	)

Definition at line 2580 of file fib_path.c.

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u8* fib_path_format	(	fib_node_index_t	pi,
		u8 *	s
	)

Definition at line 612 of file fib_path.c.

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static fib_path_t* fib_path_from_fib_node ( fib_node_t *  node )

static

Definition at line 448 of file fib_path.c.

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static fib_path_t* fib_path_get ( fib_node_index_t  index )

static

Definition at line 430 of file fib_path.c.

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adj_index_t fib_path_get_adj

(

fib_node_index_t

path_index

)

Definition at line 2111 of file fib_path.c.

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static fib_node_index_t fib_path_get_index ( fib_path_t *  path )

static

Definition at line 436 of file fib_path.c.

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static fib_node_t* fib_path_get_node ( fib_node_index_t  index )

static

Definition at line 442 of file fib_path.c.

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u16 fib_path_get_preference

(

fib_node_index_t

path_index

)

Definition at line 2138 of file fib_path.c.

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dpo_proto_t fib_path_get_proto

(

fib_node_index_t

path_index

)

Definition at line 2638 of file fib_path.c.

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index_t fib_path_get_resolving_index

(

fib_node_index_t

path_index

)

Definition at line 2079 of file fib_path.c.

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u32 fib_path_get_resolving_interface

(

fib_node_index_t

path_index

)

Definition at line 2043 of file fib_path.c.

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u32 fib_path_get_rpf_id

(

fib_node_index_t

path_index

)

Definition at line 2150 of file fib_path.c.

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u16 fib_path_get_weight

(

fib_node_index_t

path_index

)

Definition at line 2126 of file fib_path.c.

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uword fib_path_hash

(

fib_node_index_t

path_index

)

Definition at line 1483 of file fib_path.c.

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int fib_path_is_deag

(

fib_node_index_t

path_index

)

Definition at line 2547 of file fib_path.c.

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int fib_path_is_exclusive

(

fib_node_index_t

path_index

)

Definition at line 2537 of file fib_path.c.

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int fib_path_is_looped

(

fib_node_index_t

path_index

)

Definition at line 2570 of file fib_path.c.

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static int fib_path_is_permanent_drop ( fib_path_t *  path )

static

Definition at line 850 of file fib_path.c.

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int fib_path_is_recursive_constrained

(

fib_node_index_t

path_index

)

Definition at line 2525 of file fib_path.c.

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int fib_path_is_resolved

(

fib_node_index_t

path_index

)

Definition at line 2557 of file fib_path.c.

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static void fib_path_last_lock_gone ( fib_node_t *  node )

static

Definition at line 629 of file fib_path.c.

static void fib_path_memory_show ( void  )

static

Definition at line 1197 of file fib_path.c.

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void fib_path_module_init

(

void

)

Definition at line 2648 of file fib_path.c.

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static void fib_path_recursive_adj_update ( fib_path_t *  path, fib_forward_chain_type_t  fct, dpo_id_t *  dpo  )

static

Definition at line 720 of file fib_path.c.

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int fib_path_recursive_loop_detect	(	fib_node_index_t	path_index,
		fib_node_index_t **	entry_indicies
	)

Definition at line 1744 of file fib_path.c.

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int fib_path_resolve

(

fib_node_index_t

path_index

)

Definition at line 1829 of file fib_path.c.

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static fib_path_cfg_flags_t fib_path_route_flags_to_cfg_flags ( const fib_route_path_t *  rpath )

static

Definition at line 1216 of file fib_path.c.

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void fib_path_stack_mpls_disp	(	fib_node_index_t	path_index,
		dpo_proto_t	payload_proto,
		fib_mpls_lsp_mode_t	mode,
		dpo_id_t *	dpo
	)

Definition at line 2240 of file fib_path.c.

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static fib_forward_chain_type_t fib_path_to_chain_type ( const fib_path_t *  path )

static

Definition at line 936 of file fib_path.c.

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static void fib_path_unresolve ( fib_path_t *  path )

static

Definition at line 862 of file fib_path.c.

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u8* format_fib_path	(	u8 *	s,
		va_list *	args
	)

Definition at line 455 of file fib_path.c.

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

static

Definition at line 2654 of file fib_path.c.

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Variable Documentation

const char* fib_path_cfg_attribute_names[] = FIB_PATH_CFG_ATTRIBUTES

static

Definition at line 405 of file fib_path.c.

const char* fib_path_oper_attribute_names[] = FIB_PATH_OPER_ATTRIBUTES

static

Definition at line 404 of file fib_path.c.

fib_path_t* fib_path_pool

static

Definition at line 410 of file fib_path.c.

const char* fib_path_type_names[] = FIB_PATH_TYPES

static

Definition at line 403 of file fib_path.c.

const fib_node_vft_t fib_path_vft

static

Initial value:

= {
    .fnv_get = fib_path_get_node,
    .fnv_last_lock = fib_path_last_lock_gone,
    .fnv_back_walk = fib_path_back_walk_notify,
    .fnv_mem_show = fib_path_memory_show,
}

Definition at line 1208 of file fib_path.c.

vlib_cli_command_t show_fib_path

static

Initial value:

= {
  .path = "show fib paths",
  .function = show_fib_path_command,
  .short_help = "show fib paths",
}

(constructor) VLIB_CLI_COMMAND (show_fib_path)

Definition at line 2692 of file fib_path.c.