adj_mcast.c File Reference

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Functions
static u32	adj_get_mcast_node (fib_protocol_t proto)
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)
	adj_mcast_update_rewrite 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)
	adj_mcast_midchain_update_rewrite More...
void	adj_mcast_remove (fib_protocol_t proto, u32 sw_if_index)
static clib_error_t *	adj_mcast_interface_state_change (vnet_main_t *vnm, u32 sw_if_index, u32 flags)
	VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION (adj_mcast_interface_state_change)
static walk_rc_t	adj_mcast_hw_sw_interface_state_change (vnet_main_t *vnm, u32 sw_if_index, void *arg)
	Invoked on each SW interface of a HW interface when the HW interface state changes. More...
static clib_error_t *	adj_mcast_hw_interface_state_change (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
	Registered callback for HW interface state changes. More...
	VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION (adj_mcast_hw_interface_state_change)
static clib_error_t *	adj_mcast_interface_delete (vnet_main_t *vnm, u32 sw_if_index, u32 is_add)
	VNET_SW_INTERFACE_ADD_DEL_FUNCTION (adj_mcast_interface_delete)
void	adj_mcast_walk (u32 sw_if_index, fib_protocol_t 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)
static void	adj_dpo_lock (dpo_id_t *dpo)
static void	adj_dpo_unlock (dpo_id_t *dpo)
u32	adj_mcast_db_size (void)
	Return the size of the adj DB. More...
void	adj_mcast_module_init (void)
	Module initialisation. More...

Variables
static adj_index_t *	adj_mcasts [FIB_PROTOCOL_MAX]
static const dpo_vft_t	adj_mcast_dpo_vft
static const dpo_vft_t	adj_mcast_midchain_dpo_vft
static const char *const	adj_mcast_ip4_nodes []
	The per-protocol VLIB graph nodes that are assigned to a mcast object. More...
static const char *const	adj_mcast_ip6_nodes []
static const char *const *const	adj_mcast_nodes [DPO_PROTO_NUM]
static const char *const	adj_mcast_midchain_ip4_nodes []
	The per-protocol VLIB graph nodes that are assigned to a mcast object. More...
static const char *const	adj_mcast_midchain_ip6_nodes []
static const char *const *const	adj_mcast_midchain_nodes [DPO_PROTO_NUM]

Function Documentation

adj_dpo_lock()

static void adj_dpo_lock ( dpo_id_t *  dpo )

static

Definition at line 368 of file adj_mcast.c.

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adj_dpo_unlock()

static void adj_dpo_unlock ( dpo_id_t *  dpo )

static

Definition at line 373 of file adj_mcast.c.

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adj_get_mcast_node()

static u32 adj_get_mcast_node ( fib_protocol_t  proto )

static

Definition at line 29 of file adj_mcast.c.

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adj_mcast_add_or_lock()

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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adj_mcast_db_size()

u32 adj_mcast_db_size

(

void

)

Return the size of the adj DB.

Get the sze of the mcast adj DB.

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

Definition at line 446 of file adj_mcast.c.

adj_mcast_hw_interface_state_change()

static clib_error_t* adj_mcast_hw_interface_state_change ( vnet_main_t *  vnm, u32  hw_if_index, u32  flags  )

static

Registered callback for HW interface state changes.

Definition at line 237 of file adj_mcast.c.

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adj_mcast_hw_sw_interface_state_change()

static walk_rc_t adj_mcast_hw_sw_interface_state_change ( vnet_main_t *  vnm, u32  sw_if_index, void *  arg  )

static

Invoked on each SW interface of a HW interface when the HW interface state changes.

Definition at line 224 of file adj_mcast.c.

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adj_mcast_interface_delete()

static clib_error_t* adj_mcast_interface_delete ( vnet_main_t *  vnm, u32  sw_if_index, u32  is_add  )

static

Definition at line 261 of file adj_mcast.c.

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adj_mcast_interface_state_change()

static clib_error_t* adj_mcast_interface_state_change ( vnet_main_t *  vnm, u32  sw_if_index, u32  flags  )

static

Definition at line 186 of file adj_mcast.c.

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adj_mcast_midchain_update_rewrite()

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
	)

adj_mcast_midchain_update_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 136 of file adj_mcast.c.

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adj_mcast_module_init()

void adj_mcast_module_init

(

void

)

Module initialisation.

Definition at line 469 of file adj_mcast.c.

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adj_mcast_remove()

void adj_mcast_remove	(	fib_protocol_t	proto,
		u32	sw_if_index
	)

Definition at line 177 of file adj_mcast.c.

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adj_mcast_update_rewrite()

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

adj_mcast_update_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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adj_mcast_walk()

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

Walk the multicast Adjacencies on a given interface.

Definition at line 313 of file adj_mcast.c.

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format_adj_mcast()

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

Format/display a mcast adjacency.

Definition at line 328 of file adj_mcast.c.

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format_adj_mcast_midchain()

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

Definition at line 346 of file adj_mcast.c.

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VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION()

VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION

(

adj_mcast_hw_interface_state_change

)

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VNET_SW_INTERFACE_ADD_DEL_FUNCTION()

VNET_SW_INTERFACE_ADD_DEL_FUNCTION

(

adj_mcast_interface_delete

)

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VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION()

VNET_SW_INTERFACE_ADMIN_UP_DOWN_FUNCTION

(

adj_mcast_interface_state_change

)

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Variable Documentation

adj_mcast_dpo_vft

const dpo_vft_t adj_mcast_dpo_vft

static

Initial value:

= {
    .dv_lock = adj_dpo_lock,
    .dv_unlock = adj_dpo_unlock,
    .dv_format = format_adj_mcast,
    .dv_get_urpf = adj_dpo_get_urpf,
}

Definition at line 378 of file adj_mcast.c.

adj_mcast_ip4_nodes

const char* const adj_mcast_ip4_nodes[]

static

Initial value:

=
{
    "ip4-rewrite-mcast",
    NULL,
}

The per-protocol VLIB graph nodes that are assigned to a mcast object.

this means that these graph nodes are ones from which a mcast is the parent object in the DPO-graph.

Definition at line 398 of file adj_mcast.c.

adj_mcast_ip6_nodes

const char* const adj_mcast_ip6_nodes[]

static

Initial value:

=
{
    "ip6-rewrite-mcast",
    NULL,
}

Definition at line 403 of file adj_mcast.c.

adj_mcast_midchain_dpo_vft

const dpo_vft_t adj_mcast_midchain_dpo_vft

static

Initial value:

= {
    .dv_lock = adj_dpo_lock,
    .dv_unlock = adj_dpo_unlock,
    .dv_format = format_adj_mcast_midchain,
    .dv_get_urpf = adj_dpo_get_urpf,
}

Definition at line 384 of file adj_mcast.c.

adj_mcast_midchain_ip4_nodes

const char* const adj_mcast_midchain_ip4_nodes[]

static

Initial value:

=
{
    "ip4-mcast-midchain",
    NULL,
}

The per-protocol VLIB graph nodes that are assigned to a mcast object.

this means that these graph nodes are ones from which a mcast is the parent object in the DPO-graph.

Definition at line 423 of file adj_mcast.c.

adj_mcast_midchain_ip6_nodes

const char* const adj_mcast_midchain_ip6_nodes[]

static

Initial value:

=
{
    "ip6-mcast-midchain",
    NULL,
}

Definition at line 428 of file adj_mcast.c.

adj_mcast_midchain_nodes

const char* const* const adj_mcast_midchain_nodes[DPO_PROTO_NUM]

static

Initial value:

=
{
    [DPO_PROTO_IP4]  = adj_mcast_midchain_ip4_nodes,
    [DPO_PROTO_IP6]  = adj_mcast_midchain_ip6_nodes,
    [DPO_PROTO_MPLS] = NULL,
}

Definition at line 434 of file adj_mcast.c.

adj_mcast_nodes

const char* const* const adj_mcast_nodes[DPO_PROTO_NUM]

static

Initial value:

=
{
    [DPO_PROTO_IP4]  = adj_mcast_ip4_nodes,
    [DPO_PROTO_IP6]  = adj_mcast_ip6_nodes,
    [DPO_PROTO_MPLS] = NULL,
}

Definition at line 409 of file adj_mcast.c.

adj_mcasts

adj_index_t* adj_mcasts[FIB_PROTOCOL_MAX]

static

Definition at line 26 of file adj_mcast.c.