adj_nbr.h File Reference

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Typedefs
typedef enum adj_nbr_rewrite_flag_t_	adj_nbr_rewrite_flag_t
	When adding a rewrite to an adjacency these are flags that apply to that rewrite. More...

Enumerations
enum	adj_nbr_rewrite_flag_t_ { ADJ_NBR_REWRITE_FLAG_NONE, ADJ_NBR_REWRITE_FLAG_INCOMPLETE = ADJ_NBR_REWRITE_FLAG_NONE, ADJ_NBR_REWRITE_FLAG_COMPLETE = (1 << 0) }
	When adding a rewrite to an adjacency these are flags that apply to that rewrite. More...

Functions
adj_index_t	adj_nbr_add_or_lock (fib_protocol_t nh_proto, vnet_link_t link_type, const ip46_address_t *nh_addr, u32 sw_if_index)
	Neighbour Adjacency sub-type. More...
adj_index_t	adj_nbr_add_or_lock_w_rewrite (fib_protocol_t nh_proto, vnet_link_t link_type, const ip46_address_t *nh_addr, u32 sw_if_index, u8 *rewrite)
	Add (and lock) a new or lock an existing neighbour adjacency. More...
void	adj_nbr_update_rewrite (adj_index_t adj_index, adj_nbr_rewrite_flag_t flags, u8 *rewrite)
	Update the rewrite string for an existing adjacecny. More...
u8 *	format_adj_nbr_incomplete (u8 *s, va_list *ap)
	Format aa incomplete neigbour (ARP) adjacency. More...
u8 *	format_adj_nbr (u8 *s, va_list *ap)
	Format a neigbour (REWRITE) adjacency. More...
void	adj_nbr_walk (u32 sw_if_index, fib_protocol_t adj_nh_proto, adj_walk_cb_t cb, void *ctx)
	Walk the neighbour Adjacencies on a given interface. More...
void	adj_nbr_walk_nh (u32 sw_if_index, fib_protocol_t adj_nh_proto, const ip46_address_t *nh, adj_walk_cb_t cb, void *ctx)
	Walk the neighbour Adjacencies on a given interface with a given next-hop. More...
void	adj_nbr_walk_nh4 (u32 sw_if_index, const ip4_address_t *addr, adj_walk_cb_t cb, void *ctx)
	Walk adjacencies on a link with a given v4 next-hop. More...
void	adj_nbr_walk_nh6 (u32 sw_if_index, const ip6_address_t *addr, adj_walk_cb_t cb, void *ctx)
	Walk adjacencies on a link with a given v6 next-hop. More...
void	adj_nbr_module_init (void)
	Module initialisation. More...
u32	adj_nbr_db_size (void)
	Return the size of the adjacency database. More...

Typedef Documentation

typedef enum adj_nbr_rewrite_flag_t_ adj_nbr_rewrite_flag_t

When adding a rewrite to an adjacency these are flags that apply to that rewrite.

Enumeration Type Documentation

enum adj_nbr_rewrite_flag_t_

When adding a rewrite to an adjacency these are flags that apply to that rewrite.

Enumerator
ADJ_NBR_REWRITE_FLAG_NONE
ADJ_NBR_REWRITE_FLAG_INCOMPLETE	An indication that the rewrite is incomplete, i.e. that it describes the ARP/ND rewrite when probing.
ADJ_NBR_REWRITE_FLAG_COMPLETE	An indication that the rewrite is complete, i.e. that it fully describes the link-layer addressing for the desintation. The opposite of this is an incomplete rewrite that describes the ARP/ND rewrite when probing.

Definition at line 82 of file adj_nbr.h.

Function Documentation

adj_index_t adj_nbr_add_or_lock	(	fib_protocol_t	nh_proto,
		vnet_link_t	link_type,
		const ip46_address_t *	nh_addr,
		u32	sw_if_index
	)

Neighbour Adjacency sub-type.

These adjs represent an L3 peer on a connected link.

Add (and lock) a new or lock an existing neighbour adjacency

Parameters

nh_proto	The protocol for the next-hop address (v4 or v6)
link_type	A description of the protocol of the packets that will forward through this adj. On an ethernet interface this is the MAC header's ether-type
nh_addr	The address of the next-hop/peer to send the packet to
sw_if_index	The interface on which the peer resides

Definition at line 216 of file adj_nbr.c.

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adj_index_t adj_nbr_add_or_lock_w_rewrite	(	fib_protocol_t	nh_proto,
		vnet_link_t	link_type,
		const ip46_address_t *	nh_addr,
		u32	sw_if_index,
		u8 *	rewrite
	)

Add (and lock) a new or lock an existing neighbour adjacency.

Parameters

nh_proto	The protocol for the next-hop address (v4 or v6)
link_type	A description of the protocol of the packets that will forward through this adj. On an ethernet interface this is the MAC header's ether-type
nh_addr	The address of the next-hop/peer to send the packet to
sw_if_index	The interface on which the peer resides
rewrite	The rewrite to prepend to packets

Definition at line 256 of file adj_nbr.c.

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u32 adj_nbr_db_size

(

void

)

Return the size of the adjacency database.

for testing purposes

Definition at line 525 of file adj_nbr.c.

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void adj_nbr_module_init

(

void

)

Module initialisation.

Definition at line 1118 of file adj_nbr.c.

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void adj_nbr_update_rewrite	(	adj_index_t	adj_index,
		adj_nbr_rewrite_flag_t	flags,
		u8 *	rewrite
	)

Update the rewrite string for an existing adjacecny.

Parameters

The	index of the adj to update
The	new rewrite

Update the rewrite string for an existing adjacecny.

Update the adjacency's rewrite string. A NULL string implies the rewirte is reset (i.e. when ARP/ND etnry is gone). NB: the adj being updated may be handling traffic in the DP.

Definition at line 293 of file adj_nbr.c.

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void adj_nbr_walk	(	u32	sw_if_index,
		fib_protocol_t	adj_nh_proto,
		adj_walk_cb_t	cb,
		void *	ctx
	)

Walk the neighbour Adjacencies on a given interface.

Definition at line 569 of file adj_nbr.c.

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void adj_nbr_walk_nh	(	u32	sw_if_index,
		fib_protocol_t	adj_nh_proto,
		const ip46_address_t *	nh,
		adj_walk_cb_t	cb,
		void *	ctx
	)

Walk the neighbour Adjacencies on a given interface with a given next-hop.

Walk the neighbour Adjacencies on a given interface with a given next-hop.

that is visit the adjacencies with different link types.

Definition at line 674 of file adj_nbr.c.

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void adj_nbr_walk_nh4	(	u32	sw_if_index,
		const ip4_address_t *	addr,
		adj_walk_cb_t	cb,
		void *	ctx
	)

Walk adjacencies on a link with a given v4 next-hop.

that is visit the adjacencies with different link types.

Definition at line 616 of file adj_nbr.c.

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void adj_nbr_walk_nh6	(	u32	sw_if_index,
		const ip6_address_t *	addr,
		adj_walk_cb_t	cb,
		void *	ctx
	)

Walk adjacencies on a link with a given v6 next-hop.

that is visit the adjacencies with different link types.

Definition at line 645 of file adj_nbr.c.

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

Format a neigbour (REWRITE) adjacency.

Definition at line 1010 of file adj_nbr.c.

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

Format aa incomplete neigbour (ARP) adjacency.

Definition at line 989 of file adj_nbr.c.

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