Include dependency graph for fib_node.h:

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Data Structures
struct	fib_node_ptr_t_
	A representation of one pointer to another node. More...

struct	fib_node_back_walk_ctx_t_
	Context passed between object during a back walk. More...

struct	fib_node_vft_t_
	A FIB graph nodes virtual function table. More...

struct	fib_node_t_
	An node in the FIB graph. More...

Macros
#define	FIB_NODE_TYPE_MAX (FIB_NODE_TYPE_LAST + 1)

#define	FIB_NODE_TYPES

#define	FIB_NODE_BW_REASONS

#define	FOR_EACH_FIB_NODE_BW_REASON(_item)

#define	FIB_NODE_GRAPH_MAX_DEPTH ((u32)32)
	We consider a depth of 32 to be sufficient to cover all sane network topologies. More...

Typedefs
typedef enum fib_node_type_t_	fib_node_type_t
	The types of nodes in a FIB graph. More...

typedef enum fib_node_back_walk_reason_t_	fib_node_back_walk_reason_t
	Reasons for backwalking the FIB object graph. More...

typedef enum fib_node_bw_reason_flag_t_	fib_node_bw_reason_flag_t
	Flags enum constructed from the reaons. More...

typedef enum fib_node_bw_flags_t_	fib_node_bw_flags_t
	Flags on the walk. More...

typedef struct fib_node_ptr_t_	fib_node_ptr_t
	A representation of one pointer to another node. More...

typedef u32	fib_node_list_t
	A list of FIB nodes. More...

typedef struct fib_node_back_walk_ctx_t_	fib_node_back_walk_ctx_t
	Context passed between object during a back walk. More...

typedef int(*	fib_node_ptr_walk_t) (fib_node_ptr_t depend, void ctx)
	A callback function for walking a node dependency list. More...

typedef fib_node_ptr_t	fib_node_ptr_list_t
	A list of dependent nodes. More...

typedef enum fib_node_back_walk_rc_t_	fib_node_back_walk_rc_t
	Return code from a back walk function. More...

typedef fib_node_back_walk_rc_t(*	fib_node_back_walk_t) (struct fib_node_t_ node, fib_node_back_walk_ctx_t ctx)
	Function definition to backwalk a FIB node. More...

typedef struct fib_node_t_ (	fib_node_get_t) (fib_node_index_t index)
	Function definition to get a FIB node from its index. More...

typedef void(*	fib_node_last_lock_gone_t) (struct fib_node_t_ *node)
	Function definition to inform the FIB node that its last lock has gone. More...

typedef void(*	fib_node_memory_show_t) (void)
	Function definition to display the amount of memory used by a type. More...

typedef struct fib_node_vft_t_	fib_node_vft_t
	A FIB graph nodes virtual function table. More...

typedef struct fib_node_t_	fib_node_t
	An node in the FIB graph. More...

Enumerations
enum	fib_node_type_t_ { FIB_NODE_TYPE_FIRST = 0, FIB_NODE_TYPE_WALK, FIB_NODE_TYPE_ENTRY, FIB_NODE_TYPE_MFIB_ENTRY, FIB_NODE_TYPE_PATH_LIST, FIB_NODE_TYPE_PATH, FIB_NODE_TYPE_ADJ, FIB_NODE_TYPE_MPLS_ENTRY, FIB_NODE_TYPE_MPLS_TUNNEL, FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY, FIB_NODE_TYPE_LISP_ADJ, FIB_NODE_TYPE_VXLAN_TUNNEL, FIB_NODE_TYPE_MAP_E, FIB_NODE_TYPE_VXLAN_GPE_TUNNEL, FIB_NODE_TYPE_GENEVE_TUNNEL, FIB_NODE_TYPE_UDP_ENCAP, FIB_NODE_TYPE_BIER_FMASK, FIB_NODE_TYPE_BIER_ENTRY, FIB_NODE_TYPE_VXLAN_GBP_TUNNEL, FIB_NODE_TYPE_IPSEC_SA, FIB_NODE_TYPE_IP_PUNT_REDIRECT, FIB_NODE_TYPE_ENTRY_TRACK, FIB_NODE_TYPE_TEST, FIB_NODE_TYPE_LAST = FIB_NODE_TYPE_TEST }
	The types of nodes in a FIB graph. More...

enum	fib_node_back_walk_reason_t_ { FIB_NODE_BW_REASON_FIRST = 0, FIB_NODE_BW_REASON_RESOLVE = FIB_NODE_BW_REASON_FIRST, FIB_NODE_BW_REASON_EVALUATE, FIB_NODE_BW_REASON_INTERFACE_UP, FIB_NODE_BW_REASON_INTERFACE_DOWN, FIB_NODE_BW_REASON_INTERFACE_DELETE, FIB_NODE_BW_REASON_ADJ_UPDATE, FIB_NODE_BW_REASON_ADJ_DOWN, FIB_NODE_BW_REASON_LAST = FIB_NODE_BW_REASON_ADJ_DOWN }
	Reasons for backwalking the FIB object graph. More...

enum	fib_node_bw_reason_flag_t_ { FIB_NODE_BW_REASON_FLAG_NONE = 0, FIB_NODE_BW_REASON_FLAG_RESOLVE = (1 << FIB_NODE_BW_REASON_RESOLVE), FIB_NODE_BW_REASON_FLAG_EVALUATE = (1 << FIB_NODE_BW_REASON_EVALUATE), FIB_NODE_BW_REASON_FLAG_INTERFACE_UP = (1 << FIB_NODE_BW_REASON_INTERFACE_UP), FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN = (1 << FIB_NODE_BW_REASON_INTERFACE_DOWN), FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE = (1 << FIB_NODE_BW_REASON_INTERFACE_DELETE), FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE = (1 << FIB_NODE_BW_REASON_ADJ_UPDATE), FIB_NODE_BW_REASON_FLAG_ADJ_DOWN = (1 << FIB_NODE_BW_REASON_ADJ_DOWN) }
	Flags enum constructed from the reaons. More...

enum	fib_node_bw_flags_t_ { FIB_NODE_BW_FLAG_NONE = 0, FIB_NODE_BW_FLAG_FORCE_SYNC = (1 << 0) }
	Flags on the walk. More...

enum	fib_node_back_walk_rc_t_ { FIB_NODE_BACK_WALK_MERGE, FIB_NODE_BACK_WALK_CONTINUE }
	Return code from a back walk function. More...

Functions
	STATIC_ASSERT (sizeof(fib_node_bw_reason_flag_t)< 2, "BW Reason enum < 2 byte. Consequences for cover_upd_res_t")

u8 *	format_fib_node_bw_reason (u8 s, va_list args)

	STATIC_ASSERT (sizeof(fib_node_t)==12, "FIB node type is growing")

void	fib_node_register_type (fib_node_type_t ft, const fib_node_vft_t *vft)
	Register the function table for a given type. More...

fib_node_type_t	fib_node_register_new_type (const fib_node_vft_t *vft)
	Create a new FIB node type and Register the function table for it. More...

void	fib_show_memory_usage (const char *name, u32 in_use_elts, u32 allocd_elts, size_t size_elt)
	Show the memory usage for a type. More...

void	fib_node_init (fib_node_t *node, fib_node_type_t ft)

void	fib_node_deinit (fib_node_t *node)

void	fib_node_lock (fib_node_t *node)

void	fib_node_unlock (fib_node_t *node)

u32	fib_node_get_n_children (fib_node_type_t parent_type, fib_node_index_t parent_index)

u32	fib_node_child_add (fib_node_type_t parent_type, fib_node_index_t parent_index, fib_node_type_t child_type, fib_node_index_t child_index)

void	fib_node_child_remove (fib_node_type_t parent_type, fib_node_index_t parent_index, fib_node_index_t sibling_index)

fib_node_back_walk_rc_t	fib_node_back_walk_one (fib_node_ptr_t ptr, fib_node_back_walk_ctx_t ctx)

u8 *	fib_node_children_format (fib_node_list_t list, u8 *s)

const char *	fib_node_type_get_name (fib_node_type_t type)

static int	fib_node_index_is_valid (fib_node_index_t ni)

Macro Definition Documentation

◆ FIB_NODE_BW_REASONS

#define FIB_NODE_BW_REASONS

Value:

{                                   \
    [FIB_NODE_BW_REASON_RESOLVE] = "resolve",               \
    [FIB_NODE_BW_REASON_EVALUATE] = "evaluate",             \
    [FIB_NODE_BW_REASON_INTERFACE_UP] = "if-up",            \
    [FIB_NODE_BW_REASON_INTERFACE_DOWN] = "if-down",        \
    [FIB_NODE_BW_REASON_INTERFACE_DELETE] = "if-delete",    \
    [FIB_NODE_BW_REASON_ADJ_UPDATE] = "adj-update",         \
    [FIB_NODE_BW_REASON_ADJ_DOWN] = "adj-down",             \
}

Definition at line 131 of file fib_node.h.

◆ FIB_NODE_GRAPH_MAX_DEPTH

#define FIB_NODE_GRAPH_MAX_DEPTH ((u32)32)

We consider a depth of 32 to be sufficient to cover all sane network topologies.

Anything more is then an indication that there is a loop/cycle in the FIB graph. Note that all object types contribute to 1 to the depth.

Definition at line 234 of file fib_node.h.

◆ FIB_NODE_TYPE_MAX

#define FIB_NODE_TYPE_MAX (FIB_NODE_TYPE_LAST + 1)

Definition at line 60 of file fib_node.h.

◆ FIB_NODE_TYPES

#define FIB_NODE_TYPES

Value:

{                                       \
    [FIB_NODE_TYPE_ENTRY]     = "entry",                        \
    [FIB_NODE_TYPE_MFIB_ENTRY] = "mfib-entry",                  \
    [FIB_NODE_TYPE_WALK]      = "walk",                         \
    [FIB_NODE_TYPE_PATH_LIST] = "path-list",                    \
    [FIB_NODE_TYPE_PATH]      = "path",                         \
    [FIB_NODE_TYPE_MPLS_ENTRY] = "mpls-entry",                  \
    [FIB_NODE_TYPE_MPLS_TUNNEL] = "mpls-tunnel",                \
    [FIB_NODE_TYPE_ADJ] = "adj",                                \
    [FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY] = "lisp-gpe-fwd-entry",  \
    [FIB_NODE_TYPE_LISP_ADJ] = "lisp-adj",                      \
    [FIB_NODE_TYPE_VXLAN_TUNNEL] = "vxlan-tunnel",              \
    [FIB_NODE_TYPE_MAP_E] = "map-e",                            \
    [FIB_NODE_TYPE_VXLAN_GPE_TUNNEL] = "vxlan-gpe-tunnel",      \
    [FIB_NODE_TYPE_UDP_ENCAP] = "udp-encap",                    \
    [FIB_NODE_TYPE_BIER_FMASK] = "bier-fmask",                  \
    [FIB_NODE_TYPE_BIER_ENTRY] = "bier-entry",                  \
    [FIB_NODE_TYPE_VXLAN_GBP_TUNNEL] = "vxlan-gbp-tunnel",      \
    [FIB_NODE_TYPE_IPSEC_SA] = "ipsec-sa",                      \
    [FIB_NODE_TYPE_IP_PUNT_REDIRECT] = "ip-punt-redirect",      \
    [FIB_NODE_TYPE_ENTRY_TRACK] = "fib-entry-track"             \
}

Definition at line 62 of file fib_node.h.

◆ FOR_EACH_FIB_NODE_BW_REASON

#define FOR_EACH_FIB_NODE_BW_REASON ( _item )

Value:

for (_item = FIB_NODE_BW_REASON_FIRST; \
         _item <= FIB_NODE_BW_REASON_LAST; \
         _item++)

Definition at line 141 of file fib_node.h.

Typedef Documentation

◆ fib_node_back_walk_ctx_t

typedef struct fib_node_back_walk_ctx_t_ fib_node_back_walk_ctx_t

Context passed between object during a back walk.

◆ fib_node_back_walk_rc_t

typedef enum fib_node_back_walk_rc_t_ fib_node_back_walk_rc_t

Return code from a back walk function.

◆ fib_node_back_walk_reason_t

typedef enum fib_node_back_walk_reason_t_ fib_node_back_walk_reason_t

Reasons for backwalking the FIB object graph.

◆ fib_node_back_walk_t

typedef fib_node_back_walk_rc_t(* fib_node_back_walk_t) (struct fib_node_t_ *node, fib_node_back_walk_ctx_t *ctx)

Function definition to backwalk a FIB node.

Definition at line 259 of file fib_node.h.

◆ fib_node_bw_flags_t

typedef enum fib_node_bw_flags_t_ fib_node_bw_flags_t

Flags on the walk.

◆ fib_node_bw_reason_flag_t

typedef enum fib_node_bw_reason_flag_t_ fib_node_bw_reason_flag_t

Flags enum constructed from the reaons.

◆ fib_node_get_t

typedef struct fib_node_t_*(* fib_node_get_t) (fib_node_index_t index)

Function definition to get a FIB node from its index.

Definition at line 266 of file fib_node.h.

◆ fib_node_last_lock_gone_t

typedef void(* fib_node_last_lock_gone_t) (struct fib_node_t_ *node)

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

Definition at line 271 of file fib_node.h.

◆ fib_node_list_t

typedef u32 fib_node_list_t

A list of FIB nodes.

Definition at line 203 of file fib_node.h.

◆ fib_node_memory_show_t

typedef void(* fib_node_memory_show_t) (void)

Function definition to display the amount of memory used by a type.

Implementations should call fib_show_memory_usage()

Definition at line 277 of file fib_node.h.

◆ fib_node_ptr_list_t

typedef fib_node_ptr_t fib_node_ptr_list_t

A list of dependent nodes.

This is currently implemented as a hash_table of fib_node_ptr_t

Definition at line 246 of file fib_node.h.

◆ fib_node_ptr_t

typedef struct fib_node_ptr_t_ fib_node_ptr_t

A representation of one pointer to another node.

To fully qualify a node, one must know its type and its index so it can be retrieved from the appropriate pool. Direct pointers to nodes are forbidden, since all nodes are allocated from pools, which are vectors, and thus subject to realloc at any time.

◆ fib_node_ptr_walk_t

typedef int(* fib_node_ptr_walk_t) (fib_node_ptr_t *depend, void *ctx)

A callback function for walking a node dependency list.

Definition at line 239 of file fib_node.h.

◆ fib_node_t

typedef struct fib_node_t_ fib_node_t

An node in the FIB graph.

Objects in the FIB form a graph.

◆ fib_node_type_t

typedef enum fib_node_type_t_ fib_node_type_t

The types of nodes in a FIB graph.

◆ fib_node_vft_t

typedef struct fib_node_vft_t_ fib_node_vft_t

A FIB graph nodes virtual function table.

Enumeration Type Documentation

◆ fib_node_back_walk_rc_t_

enum fib_node_back_walk_rc_t_

Return code from a back walk function.

Enumerator
FIB_NODE_BACK_WALK_MERGE
FIB_NODE_BACK_WALK_CONTINUE

Definition at line 251 of file fib_node.h.

◆ fib_node_back_walk_reason_t_

enum fib_node_back_walk_reason_t_

Reasons for backwalking the FIB object graph.

Enumerator
FIB_NODE_BW_REASON_FIRST	Marker. Add new ones after.
FIB_NODE_BW_REASON_RESOLVE	Walk to re-resolve the child. Used when the parent is no longer a valid resolution target
FIB_NODE_BW_REASON_EVALUATE	Walk to re-evaluate the forwarding contributed by the parent. Used when a parent's forwarding changes and the child needs to incorporate this change in its forwarding.
FIB_NODE_BW_REASON_INTERFACE_UP	A resolving interface has come up.
FIB_NODE_BW_REASON_INTERFACE_DOWN	A resolving interface has gone down.
FIB_NODE_BW_REASON_INTERFACE_DELETE	A resolving interface has been deleted.
FIB_NODE_BW_REASON_ADJ_UPDATE	Walk to re-collapse the multipath adjs when the rewrite of a unipath adjacency changes.
FIB_NODE_BW_REASON_ADJ_DOWN	Walk to update children to inform them the adjacency is now down.
FIB_NODE_BW_REASON_LAST	Marker. Add new before and update

Definition at line 88 of file fib_node.h.

◆ fib_node_bw_flags_t_

enum fib_node_bw_flags_t_

Flags on the walk.

Enumerator
FIB_NODE_BW_FLAG_NONE
FIB_NODE_BW_FLAG_FORCE_SYNC	Force the walk to be synchronous.

Definition at line 168 of file fib_node.h.

◆ fib_node_bw_reason_flag_t_

enum fib_node_bw_reason_flag_t_

Flags enum constructed from the reaons.

Enumerator
FIB_NODE_BW_REASON_FLAG_NONE
FIB_NODE_BW_REASON_FLAG_RESOLVE
FIB_NODE_BW_REASON_FLAG_EVALUATE
FIB_NODE_BW_REASON_FLAG_INTERFACE_UP
FIB_NODE_BW_REASON_FLAG_INTERFACE_DOWN
FIB_NODE_BW_REASON_FLAG_INTERFACE_DELETE
FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE
FIB_NODE_BW_REASON_FLAG_ADJ_DOWN

Definition at line 149 of file fib_node.h.

◆ fib_node_type_t_

enum fib_node_type_t_

The types of nodes in a FIB graph.

Enumerator
FIB_NODE_TYPE_FIRST	Marker. New types after this one.
FIB_NODE_TYPE_WALK	See the respective fib_*.h files for descriptions of these objects.
FIB_NODE_TYPE_ENTRY
FIB_NODE_TYPE_MFIB_ENTRY
FIB_NODE_TYPE_PATH_LIST
FIB_NODE_TYPE_PATH
FIB_NODE_TYPE_ADJ
FIB_NODE_TYPE_MPLS_ENTRY
FIB_NODE_TYPE_MPLS_TUNNEL
FIB_NODE_TYPE_LISP_GPE_FWD_ENTRY
FIB_NODE_TYPE_LISP_ADJ
FIB_NODE_TYPE_VXLAN_TUNNEL
FIB_NODE_TYPE_MAP_E
FIB_NODE_TYPE_VXLAN_GPE_TUNNEL
FIB_NODE_TYPE_GENEVE_TUNNEL
FIB_NODE_TYPE_UDP_ENCAP
FIB_NODE_TYPE_BIER_FMASK
FIB_NODE_TYPE_BIER_ENTRY
FIB_NODE_TYPE_VXLAN_GBP_TUNNEL
FIB_NODE_TYPE_IPSEC_SA
FIB_NODE_TYPE_IP_PUNT_REDIRECT
FIB_NODE_TYPE_ENTRY_TRACK
FIB_NODE_TYPE_TEST	Marker. New types before this one. leave the test last.
FIB_NODE_TYPE_LAST

Definition at line 24 of file fib_node.h.

Function Documentation

◆ fib_node_back_walk_one()

fib_node_back_walk_rc_t fib_node_back_walk_one	(	fib_node_ptr_t *	ptr,
		fib_node_back_walk_ctx_t *	ctx
	)

Definition at line 154 of file fib_node.c.

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◆ fib_node_child_add()

u32 fib_node_child_add	(	fib_node_type_t	parent_type,
		fib_node_index_t	parent_index,
		fib_node_type_t	child_type,
		fib_node_index_t	child_index
	)

Definition at line 98 of file fib_node.c.

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◆ fib_node_child_remove()

void fib_node_child_remove	(	fib_node_type_t	parent_type,
		fib_node_index_t	parent_index,
		fib_node_index_t	sibling_index
	)

Definition at line 123 of file fib_node.c.

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◆ fib_node_children_format()

u8* fib_node_children_format	(	fib_node_list_t	list,
		u8 *	s
	)

Definition at line 176 of file fib_node.c.

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◆ fib_node_deinit()

void fib_node_deinit ( fib_node_t * node )

Definition at line 197 of file fib_node.c.

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◆ fib_node_get_n_children()

u32 fib_node_get_n_children	(	fib_node_type_t	parent_type,
		fib_node_index_t	parent_index
	)

Definition at line 142 of file fib_node.c.

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◆ fib_node_index_is_valid()

static int fib_node_index_is_valid ( fib_node_index_t ni )

inlinestatic

Definition at line 386 of file fib_node.h.

◆ fib_node_init()

void fib_node_init	(	fib_node_t *	node,
		fib_node_type_t	ft
	)

The node's type. used to retrieve the VFT.

Definition at line 185 of file fib_node.c.

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◆ fib_node_lock()

void fib_node_lock ( fib_node_t * node )

Definition at line 203 of file fib_node.c.

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◆ fib_node_register_new_type()

fib_node_type_t fib_node_register_new_type ( const fib_node_vft_t * vft )

Create a new FIB node type and Register the function table for it.

Parameters

vft	virtual function table

Returns: new FIB node type

Definition at line 80 of file fib_node.c.

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◆ fib_node_register_type()

void fib_node_register_type	(	fib_node_type_t	type,
		const fib_node_vft_t *	vft
	)

Register the function table for a given type.

Parameters

ft	FIB node type
vft	virtual function table

Register the function table for a given type.

Register the function table for a given type

Definition at line 60 of file fib_node.c.

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◆ fib_node_type_get_name()

const char* fib_node_type_get_name ( fib_node_type_t type )

Definition at line 37 of file fib_node.c.

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◆ fib_node_unlock()

void fib_node_unlock ( fib_node_t * node )

Definition at line 209 of file fib_node.c.

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◆ fib_show_memory_usage()

void fib_show_memory_usage	(	const char *	name,
		u32	in_use_elts,
		u32	allocd_elts,
		size_t	size_elt
	)

Show the memory usage for a type.

This should be invoked by the type in response to the infra calling its registered memory show function

Parameters

name	the name of the type
in_use_elts	The number of elements in use
allocd_elts	The number of allocated pool elemenets
size_elt	The size of one element

Definition at line 220 of file fib_node.c.

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◆ format_fib_node_bw_reason()

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

Definition at line 973 of file fib_walk.c.

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◆ STATIC_ASSERT() [1/2]

STATIC_ASSERT ( )

◆ STATIC_ASSERT() [2/2]

STATIC_ASSERT	(	sizeof(fib_node_t)	= `=12`,
		"FIB node type is growing"
	)

Data Structures

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

◆ FIB_NODE_BW_REASONS

◆ FIB_NODE_GRAPH_MAX_DEPTH

◆ FIB_NODE_TYPE_MAX

◆ FIB_NODE_TYPES

◆ FOR_EACH_FIB_NODE_BW_REASON

Typedef Documentation

◆ fib_node_back_walk_ctx_t

◆ fib_node_back_walk_rc_t

◆ fib_node_back_walk_reason_t

◆ fib_node_back_walk_t

◆ fib_node_bw_flags_t

◆ fib_node_bw_reason_flag_t

◆ fib_node_get_t

◆ fib_node_last_lock_gone_t

◆ fib_node_list_t

◆ fib_node_memory_show_t

◆ fib_node_ptr_list_t

◆ fib_node_ptr_t

◆ fib_node_ptr_walk_t

◆ fib_node_t

◆ fib_node_type_t

◆ fib_node_vft_t

Enumeration Type Documentation

◆ fib_node_back_walk_rc_t_

◆ fib_node_back_walk_reason_t_

◆ fib_node_bw_flags_t_

◆ fib_node_bw_reason_flag_t_

◆ fib_node_type_t_

Function Documentation

◆ fib_node_back_walk_one()

◆ fib_node_child_add()

◆ fib_node_child_remove()

◆ fib_node_children_format()

◆ fib_node_deinit()

◆ fib_node_get_n_children()

◆ fib_node_index_is_valid()

◆ fib_node_init()

◆ fib_node_lock()

◆ fib_node_register_new_type()

◆ fib_node_register_type()

◆ fib_node_type_get_name()

◆ fib_node_unlock()

◆ fib_show_memory_usage()

◆ format_fib_node_bw_reason()

◆ STATIC_ASSERT() [1/2]

◆ STATIC_ASSERT() [2/2]