adj_mcast.h File Reference

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Functions
adj_index_t	adj_mcast_add_or_lock (fib_protocol_t proto, vnet_link_t link_type, u32 sw_if_index)
	Mcast Adjacency. More...
void	adj_mcast_update_rewrite (adj_index_t adj_index, u8 *rewrite, u8 offset, u32 mask)
	Update the rewrite string for an existing adjacecny. More...
void	adj_mcast_midchain_update_rewrite (adj_index_t adj_index, adj_midchain_fixup_t fixup, const void *fixup_data, adj_flags_t flags, u8 *rewrite, u8 offset, u32 mask)
	Update the rewrite string for an existing adjacecny and Convert the adjacency into a midchain. More...
void	adj_mcast_walk (u32 sw_if_index, fib_protocol_t adj_nh_proto, adj_walk_cb_t cb, void *ctx)
	Walk the multicast Adjacencies on a given interface. More...
u8 *	format_adj_mcast (u8 *s, va_list *ap)
	Format/display a mcast adjacency. More...
u8 *	format_adj_mcast_midchain (u8 *s, va_list *ap)
u32	adj_mcast_db_size (void)
	Get the sze of the mcast adj DB. More...
void	adj_mcast_module_init (void)
	Module initialisation. More...

Function Documentation

adj_index_t adj_mcast_add_or_lock	(	fib_protocol_t	proto,
		vnet_link_t	link_type,
		u32	sw_if_index
	)

Mcast Adjacency.

The multicast adjacency forwards IP traffic on an interface toward a multicast group address. This is a different type of adjacency to a unicast adjacency since the application of the MAC header is different, and so the VLIB node visited is also different. DPO types have different VLIB nodes.

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

Parameters

proto	The protocol for the neighbours that we wish to mcast
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
sw_if_index	The interface on which to mcast

Definition at line 51 of file adj_mcast.c.

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u32 adj_mcast_db_size

(

void

)

Get the sze of the mcast adj DB.

Test purposes only.

Get the sze of the mcast adj DB.

This is only for testing purposes so an efficient implementation is not needed

Definition at line 454 of file adj_mcast.c.

void adj_mcast_midchain_update_rewrite	(	adj_index_t	adj_index,
		adj_midchain_fixup_t	fixup,
		const void *	fixup_data,
		adj_flags_t	flags,
		u8 *	rewrite,
		u8	offset,
		u32	mask
	)

Update the rewrite string for an existing adjacecny and Convert the adjacency into a midchain.

Parameters

The	index of the adj to update
fixup	The function that will be invoked at paket switch time to 'fixup' the rewrite applied with necessary per-packet info (i.e. length, checksums).
fixup_data	Context data set by the caller that is provided as an argument in the fixup function.
flags	Flags controlling the adjacency behaviour
The	new rewrite

Update the rewrite string for an existing adjacecny and Convert the adjacency into a midchain.

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 140 of file adj_mcast.c.

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void adj_mcast_module_init

(

void

)

Module initialisation.

Definition at line 477 of file adj_mcast.c.

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void adj_mcast_update_rewrite	(	adj_index_t	adj_index,
		u8 *	rewrite,
		u8	offset,
		u32	mask
	)

Update the rewrite string for an existing adjacecny.

Parameters

The	index of the adj to update
The	new rewrite
The	offset in the rewrite a which to write in packet's IP Address
The	mask to apply to the packet berfore the 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 102 of file adj_mcast.c.

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

Walk the multicast Adjacencies on a given interface.

Definition at line 321 of file adj_mcast.c.

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

Format/display a mcast adjacency.

Definition at line 336 of file adj_mcast.c.

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

Definition at line 354 of file adj_mcast.c.

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