bier_fmask.h File Reference

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Data Structures
struct	bier_fmask_bits_t_
	bier_fmask : The BIER fmask More...
struct	bier_fmask_t_
	An outgoing BIER mask. More...

Macros
#define	BIER_FMASK_ATTR_NAMES
#define	FOR_EACH_BIER_FMASK_ATTR(_item)

Typedefs
typedef struct bier_fmask_bits_t_	bier_fmask_bits_t
	bier_fmask : The BIER fmask More...
typedef enum bier_fmask_attributes_t_	bier_fmask_attributes_t
	Flags on fmask. More...
typedef enum bier_fmask_flags_t_	bier_fmask_flags_t
typedef struct bier_fmask_t_	bier_fmask_t
	An outgoing BIER mask. More...

Enumerations
enum	bier_fmask_attributes_t_ {   BIER_FMASK_ATTR_FIRST, BIER_FMASK_ATTR_FORWARDING = BIER_FMASK_ATTR_FIRST, BIER_FMASK_ATTR_DISP, BIER_FMASK_ATTR_MPLS,   BIER_FMASK_ATTR_LAST = BIER_FMASK_ATTR_DISP }
	Flags on fmask. More...
enum	bier_fmask_flags_t_ { BIER_FMASK_FLAG_FORWARDING = (1 << BIER_FMASK_ATTR_FORWARDING), BIER_FMASK_FLAG_DISP = (1 << BIER_FMASK_ATTR_DISP), BIER_FMASK_FLAG_MPLS = (1 << BIER_FMASK_ATTR_MPLS) }

Functions
void	bier_fmask_link (index_t bfmi, bier_bp_t bp)
void	bier_fmask_unlink (index_t bfmi, bier_bp_t bp)
void	bier_fmask_unlock (index_t bfmi)
void	bier_fmask_lock (index_t bfmi)
index_t	bier_fmask_create_and_lock (const bier_fmask_id_t *fmid, const fib_route_path_t *rpath)
u8 *	format_bier_fmask (u8 *s, va_list *ap)
void	bier_fmask_contribute_forwarding (index_t bfmi, dpo_id_t *dpo)
u32	bier_fmask_child_add (fib_node_index_t fib_entry_index, fib_node_type_t child_type, fib_node_index_t child_index)
void	bier_fmask_child_remove (fib_node_index_t fib_entry_index, u32 sibling_index)
void	bier_fmask_get_stats (index_t bfmi, u64 *packets, u64 *bytes)
void	bier_fmask_encode (index_t bfmi, bier_table_id_t *btid, fib_route_path_encode_t *rpath)
static bier_fmask_t *	bier_fmask_get (u32 index)

Variables
bier_fmask_t *	bier_fmask_pool

Macro Definition Documentation

BIER_FMASK_ATTR_NAMES

#define BIER_FMASK_ATTR_NAMES

Value:

{                         \
     [BIER_FMASK_ATTR_FORWARDING] = "forwarding",       \
     [BIER_FMASK_ATTR_DISP] = "disposition",            \
     [BIER_FMASK_ATTR_MPLS] = "mpls",                   \
}

Definition at line 72 of file bier_fmask.h.

FOR_EACH_BIER_FMASK_ATTR

#define FOR_EACH_BIER_FMASK_ATTR

(

_item

)

Value:

for (_item =  BIER_FMASK_ATTR_FIRST;         \
         _item <= BIER_FMASK_ATTR_LAST;          \
         _item++)

Definition at line 78 of file bier_fmask.h.

Typedef Documentation

bier_fmask_attributes_t

typedef enum bier_fmask_attributes_t_ bier_fmask_attributes_t

Flags on fmask.

bier_fmask_bits_t

typedef struct bier_fmask_bits_t_ bier_fmask_bits_t

bier_fmask : The BIER fmask

The BIER fmask contains the bitString that is applied to packets that egress towards the next-hop. As such the fmask is part of the rewrite (adj) for that next-hop. It it thus an extension of the next-hop and in no way associated with the bit-position(s) that are reachable through it. Fmasks are thus shared by bit-positions that egress throught the same nh (BFR-NBR). Deag fmasks are also shread in the event that a router has local bit-positions. This is necessary to prevent the router recieving two copies of each packet. Consequently it also means that they share the same disposition data for the global data. A struct that represents the reference counting of the bits

bier_fmask_flags_t

typedef enum bier_fmask_flags_t_ bier_fmask_flags_t

bier_fmask_t

typedef struct bier_fmask_t_ bier_fmask_t

An outgoing BIER mask.

aka forwarding bit mask (in the RFCs)

This mask's function is two-fold 1 - it is logical-AND with the input packet header to produce the output packet header 2 - it is logical NAND with the input packet header to modify the bit-mask for the next lookup

Enumeration Type Documentation

bier_fmask_attributes_t_

enum bier_fmask_attributes_t_

Flags on fmask.

Enumerator
BIER_FMASK_ATTR_FIRST
BIER_FMASK_ATTR_FORWARDING
BIER_FMASK_ATTR_DISP
BIER_FMASK_ATTR_MPLS
BIER_FMASK_ATTR_LAST

Definition at line 63 of file bier_fmask.h.

bier_fmask_flags_t_

enum bier_fmask_flags_t_

Enumerator
BIER_FMASK_FLAG_FORWARDING
BIER_FMASK_FLAG_DISP
BIER_FMASK_FLAG_MPLS

Definition at line 83 of file bier_fmask.h.

Function Documentation

bier_fmask_child_add()

u32 bier_fmask_child_add	(	fib_node_index_t	fib_entry_index,
		fib_node_type_t	child_type,
		fib_node_index_t	child_index
	)

Definition at line 141 of file bier_fmask.c.

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bier_fmask_child_remove()

void bier_fmask_child_remove	(	fib_node_index_t	fib_entry_index,
		u32	sibling_index
	)

Definition at line 152 of file bier_fmask.c.

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bier_fmask_contribute_forwarding()

void bier_fmask_contribute_forwarding	(	index_t	bfmi,
		dpo_id_t *	dpo
	)

Definition at line 120 of file bier_fmask.c.

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bier_fmask_create_and_lock()

index_t bier_fmask_create_and_lock	(	const bier_fmask_id_t *	fmid,
		const fib_route_path_t *	rpath
	)

Definition at line 284 of file bier_fmask.c.

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bier_fmask_encode()

void bier_fmask_encode	(	index_t	bfmi,
		bier_table_id_t *	btid,
		fib_route_path_encode_t *	rpath
	)

Definition at line 405 of file bier_fmask.c.

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bier_fmask_get()

static bier_fmask_t* bier_fmask_get ( u32  index )

inlinestatic

Definition at line 177 of file bier_fmask.h.

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bier_fmask_get_stats()

void bier_fmask_get_stats	(	index_t	bfmi,
		u64 *	packets,
		u64 *	bytes
	)

Definition at line 394 of file bier_fmask.c.

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bier_fmask_link()

void bier_fmask_link	(	index_t	bfmi,
		bier_bp_t	bp
	)

Definition at line 304 of file bier_fmask.c.

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bier_fmask_lock()

void bier_fmask_lock

(

index_t

bfmi

)

Definition at line 269 of file bier_fmask.c.

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bier_fmask_unlink()

void bier_fmask_unlink	(	index_t	bfmi,
		bier_bp_t	bp
	)

Definition at line 324 of file bier_fmask.c.

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bier_fmask_unlock()

void bier_fmask_unlock

(

index_t

bfmi

)

Definition at line 254 of file bier_fmask.c.

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format_bier_fmask()

u8* format_bier_fmask	(	u8 *	s,
		va_list *	ap
	)

Definition at line 344 of file bier_fmask.c.

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Variable Documentation

bier_fmask_pool

bier_fmask_t* bier_fmask_pool

Definition at line 38 of file bier_fmask.c.