igmp.c File Reference

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Macros
#define	igmp_type(n, s)
#define	igmp_report_type(n, s)

Functions
void	igmp_clear_group (igmp_config_t *config, igmp_group_t *group)
	igmp clear group More...
void	igmp_clear_config (igmp_config_t *config)
	igmp clear config More...
int	igmp_timer_compare (const void *_a, const void *_b)
	igmp timer compare More...
void	igmp_sort_timers (igmp_timer_t *timers)
	igmp sort timers More...
void	igmp_create_int_timer (f64 time, u32 sw_if_index, igmp_timer_function_t *func)
	igmp create int timer More...
void	igmp_create_group_timer (f64 time, u32 sw_if_index, igmp_key_t *gkey, igmp_timer_function_t *func)
	igmp create group timer More...
void	igmp_create_src_timer (f64 time, u32 sw_if_index, igmp_key_t *gkey, igmp_key_t *skey, igmp_timer_function_t *func)
	igmp create group timer More...
static igmp_timer_t *	igmp_get_next_timer (igmp_main_t *im)
	igmp get next timer More...
static void	igmp_create_report_v3 (vlib_buffer_t *b, igmp_config_t *config, igmp_group_t *group)
	igmp create report all (v3) More...
static void	igmp_create_query_v3 (vlib_buffer_t *b, igmp_config_t *config, igmp_group_t *group)
	igmp create query (v3) More...
static void	igmp_create_ip4 (vlib_buffer_t *b, igmp_config_t *config, igmp_group_t *group, u8 is_report)
	igmp create ip4 More...
static void	igmp_send_msg (vlib_main_t *vm, vlib_node_runtime_t *node, igmp_main_t *im, igmp_config_t *config, igmp_group_t *group, u8 is_report)
	igmp send message More...
void	igmp_send_query (vlib_main_t *vm, vlib_node_runtime_t *rt, igmp_main_t *im, igmp_timer_t *timer)
	igmp send query (igmp_timer_function_t) More...
void	igmp_query_resp_exp (vlib_main_t *vm, vlib_node_runtime_t *rt, igmp_main_t *im, igmp_timer_t *timer)
	igmp query response expiration (igmp_timer_function_t) More...
void	igmp_send_report (vlib_main_t *vm, vlib_node_runtime_t *rt, igmp_main_t *im, igmp_timer_t *timer)
	igmp send report (igmp_timer_function_t) More...
void	igmp_send_state_changed (vlib_main_t *vm, vlib_node_runtime_t *rt, igmp_main_t *im, igmp_timer_t *timer)
	igmp send state changed (igmp_timer_function_t) More...
void	igmp_src_exp (vlib_main_t *vm, vlib_node_runtime_t *rt, igmp_main_t *im, igmp_timer_t *timer)
	igmp source expiration (igmp_timer_function_t) More...
static uword	igmp_timer_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f)
	igmp timer process More...
int	igmp_listen (vlib_main_t *vm, u8 enable, u32 sw_if_index, ip46_address_t saddr, ip46_address_t gaddr, u8 cli_api_configured)
	igmp listen More...
static clib_error_t *	igmp_hw_interface_link_up_down (vnet_main_t *vnm, u32 hw_if_index, u32 flags)
	igmp hardware interface link up down More...
	VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION (igmp_hw_interface_link_up_down)
static clib_error_t *	igmp_init (vlib_main_t *vm)
	igmp initialization More...
	VLIB_PLUGIN_REGISTER ()

Variables
igmp_main_t	igmp_main
vlib_node_registration_t	igmp_timer_process_node
	(constructor) VLIB_REGISTER_NODE (igmp_timer_process_node) More...

Macro Definition Documentation

#define igmp_report_type	(		n,
			s
	)

Value:

do {                                            \
  vec_add2 (im->report_type_infos, rti, 1);             \
  rti->type = n;                                        \
  rti->name = (u8 *) #s;                                \
} while (0);

#define igmp_type	(		n,
			s
	)

Value:

do {                                            \
  vec_add2 (im->type_infos, ti, 1);             \
  ti->type = n;                                 \
  ti->name = (u8 *) #s;                         \
} while (0);

Function Documentation

void igmp_clear_config

(

igmp_config_t *

config

)

igmp clear config

Parameters

config

- igmp configuration

Clear all (S,G)s on specified config and remove this config from pool.

Definition at line 62 of file igmp.c.

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void igmp_clear_group	(	igmp_config_t *	config,
		igmp_group_t *	group
	)

igmp clear group

Parameters

config	- igmp configuration
group	- the group to be removed

Remove this group from interface (specified by configuration).

Definition at line 37 of file igmp.c.

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void igmp_create_group_timer	(	f64	time,
		u32	sw_if_index,
		igmp_key_t *	gkey,
		igmp_timer_function_t *	func
	)

igmp create group timer

Parameters

time	- expiration time (at this time the timer will expire)
sw_if_index	- interface sw_if_index
gkey	- key to find the group by
func	- function to all after timer expiration

Creates new group timer.

Definition at line 124 of file igmp.c.

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void igmp_create_int_timer	(	f64	time,
		u32	sw_if_index,
		igmp_timer_function_t *	func
	)

igmp create int timer

Parameters

time	- expiration time (at this time the timer will expire)
sw_if_index	- interface sw_if_index
func	- function to all after timer expiration

Creates new interface timer. Delayed reports, query msg, query resp.

Definition at line 108 of file igmp.c.

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static void igmp_create_ip4 ( vlib_buffer_t *  b, igmp_config_t *  config, igmp_group_t *  group, u8  is_report  )

static

igmp create ip4

Parameters

b	- vlib buffer
config	- igmp configuration
group	- igmp membership group
is_report	- if zero create query, else create report

Create ip4 header in vlib buffer b.

Definition at line 345 of file igmp.c.

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static void igmp_create_query_v3 ( vlib_buffer_t *  b, igmp_config_t *  config, igmp_group_t *  group  )

static

igmp create query (v3)

Parameters

b	- vlib buffer
config	- configuration that sends the query
group	- if not NULL, create Group-specific query

Create igmp v3 qeury inside vlib buffer b. If group == NULL create general query, else, create group specific query.

Definition at line 306 of file igmp.c.

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static void igmp_create_report_v3 ( vlib_buffer_t *  b, igmp_config_t *  config, igmp_group_t *  group  )

static

igmp create report all (v3)

Parameters

b	- vlib buffer
config	- igmp configuration
group	- igmp group

Create IGMPv3 report. If group is NULL, send all groups on interface.

Definition at line 223 of file igmp.c.

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void igmp_create_src_timer	(	f64	time,
		u32	sw_if_index,
		igmp_key_t *	gkey,
		igmp_key_t *	skey,
		igmp_timer_function_t *	func
	)

igmp create group timer

Parameters

time	- expiration time (at this time the timer will expire)
sw_if_index	- interface sw_if_index
gkey	- key to find the group by
skey	- key to find the source by
func	- function to all after timer expiration

Creates new source timer.

Definition at line 146 of file igmp.c.

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static igmp_timer_t* igmp_get_next_timer ( igmp_main_t *  im )

inlinestatic

igmp get next timer

Parameters

im	- igmp main

Get next timer.

Definition at line 174 of file igmp.c.

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

static

igmp hardware interface link up down

Parameters

vnm	- vnet main
hw_if_index	- interface hw_if_index
flags	- hw interface flags

If an interface goes down, remove its (S,G)s.

Definition at line 948 of file igmp.c.

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static clib_error_t* igmp_init ( vlib_main_t *  vm )

static

igmp initialization

Parameters

vm	- vlib main

initialize igmp plugin. Initialize igmp_main, set mfib to allow igmp traffic.

Definition at line 974 of file igmp.c.

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int igmp_listen	(	vlib_main_t *	vm,
		u8	enable,
		u32	sw_if_index,
		ip46_address_t	saddr,
		ip46_address_t	gaddr,
		u8	cli_api_configured
	)

igmp listen

Parameters

vm	- vlib main
enable	- 0 == remove (S,G), else add (S,G)
sw_if_index	- interface sw_if_index
saddr	- source address
gaddr	- group address
cli_api_configured	- if zero, an igmp report has been received on interface

Add/del (S,G) on an interface. If user configured, send a status change report from the interface. If a report was received on interface notify registered api clients.

Definition at line 738 of file igmp.c.

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void igmp_query_resp_exp	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		igmp_main_t *	im,
		igmp_timer_t *	timer
	)

igmp query response expiration (igmp_timer_function_t)

If a response to a query didn't come in time, remove (S,G)s.

Definition at line 493 of file igmp.c.

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static void igmp_send_msg ( vlib_main_t *  vm, vlib_node_runtime_t *  node, igmp_main_t *  im, igmp_config_t *  config, igmp_group_t *  group, u8  is_report  )

static

igmp send message

Parameters

vm	- vlib main
node	- vlib runtime node
im	- igmp main
config	- igmp configuration
group	- igmp mebership group
is_report	- 0 == qeury, else report

Send an igmp message. Get free vlib buffer fill it with igmp packet and transmit.

Definition at line 401 of file igmp.c.

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void igmp_send_query	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		igmp_main_t *	im,
		igmp_timer_t *	timer
	)

igmp send query (igmp_timer_function_t)

Send an igmp query. If the timer holds group key, send Group-Specific query, else send General query.

Definition at line 467 of file igmp.c.

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void igmp_send_report	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		igmp_main_t *	im,
		igmp_timer_t *	timer
	)

igmp send report (igmp_timer_function_t)

Send igmp membership report.

Definition at line 525 of file igmp.c.

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void igmp_send_state_changed	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		igmp_main_t *	im,
		igmp_timer_t *	timer
	)

igmp send state changed (igmp_timer_function_t)

Send report if an (S,G) filter has changed.

Definition at line 550 of file igmp.c.

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void igmp_sort_timers

(

igmp_timer_t *

timers

)

igmp sort timers

Parameters

timers

- pool of igmp timers

Sort igmp timers, so that the first to expire is at end.

Definition at line 97 of file igmp.c.

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void igmp_src_exp	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		igmp_main_t *	im,
		igmp_timer_t *	timer
	)

igmp source expiration (igmp_timer_function_t)

Remove expired (S,G) from group.

Definition at line 644 of file igmp.c.

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int igmp_timer_compare	(	const void *	_a,
		const void *	_b
	)

igmp timer compare

Parameters

_a	- igmp timer
_b	- igmp timer

Compare function for igmp_timer_t sorting.

Definition at line 88 of file igmp.c.

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static uword igmp_timer_process ( vlib_main_t *  vm, vlib_node_runtime_t *  rt, vlib_frame_t *  f  )

static

igmp timer process

Parameters

vm	- vlib main
rt	- vlib runtime node
f	- vlib frame

Handle igmp timers.

Definition at line 693 of file igmp.c.

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VLIB_PLUGIN_REGISTER

(

)

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VNET_HW_INTERFACE_LINK_UP_DOWN_FUNCTION

(

igmp_hw_interface_link_up_down

)

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Variable Documentation

igmp_main_t igmp_main

Definition at line 34 of file igmp.c.

vlib_node_registration_t igmp_timer_process_node

Initial value:

=
{
  .function = igmp_timer_process,
  .type = VLIB_NODE_TYPE_PROCESS,
  .name = "igmp-timer-process",
  .n_next_nodes = IGMP_N_NEXT,
  .next_nodes =  {
    [IGMP_NEXT_IP4_REWRITE_MCAST_NODE] = "ip4-rewrite-mcast",
    [IGMP_NEXT_IP6_REWRITE_MCAST_NODE] = "ip6-rewrite-mcast",
  }
}

(constructor) VLIB_REGISTER_NODE (igmp_timer_process_node)

Definition at line 724 of file igmp.c.