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)
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, const fib_path_ext_t *path_ext, 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
vlib_log_class_t	fib_path_logger
	the logger More...
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

FIB_PATH_DBG

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

Value:

{                                                                       \
    vlib_log_debug (fib_path_logger,                                    \
                    "[%U]: " _fmt,                                      \
                    format_fib_path(), fib_path_get_index(_p), 0,         \
                    FIB_PATH_FORMAT_FLAGS_ONE_LINE,                     \
                    ##_args);                                           \
}

Definition at line 421 of file fib_path.c.

FIB_PATH_OPER_ATTRIBUTE_MAX

#define FIB_PATH_OPER_ATTRIBUTE_MAX   (FIB_PATH_OPER_ATTRIBUTE_LAST + 1)

The maximum number of path operational attributes.

Definition at line 172 of file fib_path.c.

FIB_PATH_OPER_ATTRIBUTES

#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 174 of file fib_path.c.

FIB_PATH_TYPE_MAX

#define FIB_PATH_TYPE_MAX   (FIB_PATH_TYPE_LAST + 1)

The maximum number of path_types.

Definition at line 116 of file fib_path.c.

FIB_PATH_TYPES

#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 118 of file fib_path.c.

FOR_EACH_FIB_PATH_OPER_ATTRIBUTE

#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 180 of file fib_path.c.

FOR_EACH_FIB_PATH_TYPE

#define FOR_EACH_FIB_PATH_TYPE

(

_item

)

Value:

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

Definition at line 134 of file fib_path.c.

Typedef Documentation

fib_path_oper_attribute_t

typedef enum fib_path_oper_attribute_t_ fib_path_oper_attribute_t

Enurmeration of path operational (i.e.

derived) attributes

fib_path_oper_flags_t

typedef enum fib_path_oper_flags_t_ fib_path_oper_flags_t

Path flags from the attributes.

fib_path_t

typedef struct fib_path_t_ fib_path_t

A FIB path.

fib_path_type_t

typedef enum fib_path_type_t_ fib_path_type_t

Enurmeration of path types.

Enumeration Type Documentation

fib_path_oper_attribute_t_

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 142 of file fib_path.c.

fib_path_oper_flags_t_

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 188 of file fib_path.c.

fib_path_type_t_

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 50 of file fib_path.c.

Function Documentation

fib_path_append_nh_for_multipath_hash()

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 2532 of file fib_path.c.

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fib_path_attached_get_adj()

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

static

Definition at line 698 of file fib_path.c.

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fib_path_attached_next_hop_get_adj()

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

static

Definition at line 641 of file fib_path.c.

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fib_path_attached_next_hop_set()

static void fib_path_attached_next_hop_set ( fib_path_t *  path )

static

Definition at line 668 of file fib_path.c.

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fib_path_back_walk_notify()

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 968 of file fib_path.c.

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fib_path_bier_fmask_update()

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

static

Definition at line 831 of file fib_path.c.

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fib_path_cmp()

int fib_path_cmp	(	fib_node_index_t	pi1,
		fib_node_index_t	pi2
	)

Definition at line 1637 of file fib_path.c.

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fib_path_cmp_for_sort()

int fib_path_cmp_for_sort	(	void *	v1,
		void *	v2
	)

Definition at line 1610 of file fib_path.c.

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fib_path_cmp_i()

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

static

Definition at line 1515 of file fib_path.c.

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fib_path_cmp_w_route_path()

int fib_path_cmp_w_route_path	(	fib_node_index_t	path_index,
		const fib_route_path_t *	rpath
	)

Definition at line 1649 of file fib_path.c.

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fib_path_contribute_forwarding()

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

Definition at line 2324 of file fib_path.c.

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fib_path_contribute_urpf()

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 2206 of file fib_path.c.

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fib_path_copy()

fib_node_index_t fib_path_copy	(	fib_node_index_t	path_index,
		fib_node_index_t	path_list_index
	)

Definition at line 1443 of file fib_path.c.

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fib_path_create()

fib_node_index_t fib_path_create	(	fib_node_index_t	pl_index,
		const fib_route_path_t *	rpath
	)

Definition at line 1258 of file fib_path.c.

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fib_path_create_special()

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 1397 of file fib_path.c.

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fib_path_destroy()

void fib_path_destroy

(

fib_node_index_t

path_index

)

Definition at line 1476 of file fib_path.c.

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fib_path_encode()

fib_path_list_walk_rc_t fib_path_encode	(	fib_node_index_t	path_list_index,
		fib_node_index_t	path_index,
		const fib_path_ext_t *	path_ext,
		void *	ctx
	)

Definition at line 2616 of file fib_path.c.

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fib_path_from_fib_node()

static fib_path_t* fib_path_from_fib_node ( fib_node_t *  node )

static

Definition at line 449 of file fib_path.c.

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fib_path_get()

static fib_path_t* fib_path_get ( fib_node_index_t  index )

static

Definition at line 431 of file fib_path.c.

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fib_path_get_adj()

adj_index_t fib_path_get_adj

(

fib_node_index_t

path_index

)

Definition at line 2144 of file fib_path.c.

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fib_path_get_index()

static fib_node_index_t fib_path_get_index ( fib_path_t *  path )

static

Definition at line 437 of file fib_path.c.

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fib_path_get_node()

static fib_node_t* fib_path_get_node ( fib_node_index_t  index )

static

Definition at line 443 of file fib_path.c.

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fib_path_get_preference()

u16 fib_path_get_preference

(

fib_node_index_t

path_index

)

Definition at line 2171 of file fib_path.c.

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fib_path_get_proto()

dpo_proto_t fib_path_get_proto

(

fib_node_index_t

path_index

)

Definition at line 2690 of file fib_path.c.

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fib_path_get_resolving_index()

index_t fib_path_get_resolving_index

(

fib_node_index_t

path_index

)

Definition at line 2112 of file fib_path.c.

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fib_path_get_resolving_interface()

u32 fib_path_get_resolving_interface

(

fib_node_index_t

path_index

)

Definition at line 2076 of file fib_path.c.

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fib_path_get_rpf_id()

u32 fib_path_get_rpf_id

(

fib_node_index_t

path_index

)

Definition at line 2183 of file fib_path.c.

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fib_path_get_weight()

u16 fib_path_get_weight

(

fib_node_index_t

path_index

)

Definition at line 2159 of file fib_path.c.

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fib_path_hash()

uword fib_path_hash

(

fib_node_index_t

path_index

)

Definition at line 1497 of file fib_path.c.

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fib_path_is_deag()

int fib_path_is_deag

(

fib_node_index_t

path_index

)

Definition at line 2583 of file fib_path.c.

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fib_path_is_exclusive()

int fib_path_is_exclusive

(

fib_node_index_t

path_index

)

Definition at line 2573 of file fib_path.c.

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fib_path_is_looped()

int fib_path_is_looped

(

fib_node_index_t

path_index

)

Definition at line 2606 of file fib_path.c.

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fib_path_is_permanent_drop()

static int fib_path_is_permanent_drop ( fib_path_t *  path )

static

Definition at line 856 of file fib_path.c.

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fib_path_is_recursive_constrained()

int fib_path_is_recursive_constrained

(

fib_node_index_t

path_index

)

Definition at line 2561 of file fib_path.c.

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fib_path_is_resolved()

int fib_path_is_resolved

(

fib_node_index_t

path_index

)

Definition at line 2593 of file fib_path.c.

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fib_path_last_lock_gone()

static void fib_path_last_lock_gone ( fib_node_t *  node )

static

Definition at line 635 of file fib_path.c.

fib_path_memory_show()

static void fib_path_memory_show ( void  )

static

Definition at line 1206 of file fib_path.c.

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fib_path_module_init()

void fib_path_module_init

(

void

)

Definition at line 2700 of file fib_path.c.

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fib_path_recursive_adj_update()

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 726 of file fib_path.c.

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fib_path_recursive_loop_detect()

int fib_path_recursive_loop_detect	(	fib_node_index_t	path_index,
		fib_node_index_t **	entry_indicies
	)

Definition at line 1762 of file fib_path.c.

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fib_path_resolve()

int fib_path_resolve

(

fib_node_index_t

path_index

)

Definition at line 1859 of file fib_path.c.

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fib_path_route_flags_to_cfg_flags()

static fib_path_cfg_flags_t fib_path_route_flags_to_cfg_flags ( const fib_route_path_t *  rpath )

static

Definition at line 1225 of file fib_path.c.

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fib_path_stack_mpls_disp()

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 2273 of file fib_path.c.

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fib_path_to_chain_type()

static fib_forward_chain_type_t fib_path_to_chain_type ( const fib_path_t *  path )

static

Definition at line 942 of file fib_path.c.

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fib_path_unresolve()

static void fib_path_unresolve ( fib_path_t *  path )

static

Definition at line 868 of file fib_path.c.

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format_fib_path()

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

Definition at line 456 of file fib_path.c.

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show_fib_path_command()

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 2707 of file fib_path.c.

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Variable Documentation

fib_path_cfg_attribute_names

const char* fib_path_cfg_attribute_names[] = FIB_PATH_CFG_ATTRIBUTES

static

Definition at line 406 of file fib_path.c.

fib_path_logger

vlib_log_class_t fib_path_logger

the logger

Definition at line 416 of file fib_path.c.

fib_path_oper_attribute_names

const char* fib_path_oper_attribute_names[] = FIB_PATH_OPER_ATTRIBUTES

static

Definition at line 405 of file fib_path.c.

fib_path_pool

fib_path_t* fib_path_pool

static

Definition at line 411 of file fib_path.c.

fib_path_type_names

const char* fib_path_type_names[] = FIB_PATH_TYPES

static

Definition at line 404 of file fib_path.c.

fib_path_vft

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 1217 of file fib_path.c.

show_fib_path

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 2747 of file fib_path.c.