transport.c File Reference

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Macros
#define	TRANSPORT_PACER_MIN_MSS   1460
#define	TRANSPORT_PACER_MIN_BURST   TRANSPORT_PACER_MIN_MSS
#define	TRANSPORT_PACER_MAX_BURST   (32 * TRANSPORT_PACER_MIN_MSS)
#define	PORT_MASK   ((1 << 16)- 1)
#define	SPACER_CPU_TICKS_PER_PERIOD_SHIFT   10
#define	SPACER_CPU_TICKS_PER_PERIOD   (1 << SPACER_CPU_TICKS_PER_PERIOD_SHIFT)

Functions
u8 *	format_transport_proto (u8 *s, va_list *args)
u8 *	format_transport_proto_short (u8 *s, va_list *args)
u8 *	format_transport_connection (u8 *s, va_list *args)
u8 *	format_transport_listen_connection (u8 *s, va_list *args)
u8 *	format_transport_half_open_connection (u8 *s, va_list *args)
uword	unformat_transport_proto (unformat_input_t *input, va_list *args)
u32	transport_endpoint_lookup (transport_endpoint_table_t *ht, u8 proto, ip46_address_t *ip, u16 port)
void	transport_endpoint_table_add (transport_endpoint_table_t *ht, u8 proto, transport_endpoint_t *te, u32 value)
void	transport_endpoint_table_del (transport_endpoint_table_t *ht, u8 proto, transport_endpoint_t *te)
void	transport_register_protocol (transport_proto_t transport_proto, const transport_proto_vft_t *vft, fib_protocol_t fib_proto, u32 output_node)
	Register transport virtual function table. More...
transport_proto_vft_t *	transport_protocol_get_vft (transport_proto_t transport_proto)
	Get transport virtual function table. More...
u8	transport_half_open_has_fifos (transport_proto_t tp)
transport_service_type_t	transport_protocol_service_type (transport_proto_t tp)
transport_tx_fn_type_t	transport_protocol_tx_fn_type (transport_proto_t tp)
void	transport_cleanup (transport_proto_t tp, u32 conn_index, u8 thread_index)
int	transport_connect (transport_proto_t tp, transport_endpoint_cfg_t *tep)
void	transport_close (transport_proto_t tp, u32 conn_index, u8 thread_index)
u32	transport_start_listen (transport_proto_t tp, u32 session_index, transport_endpoint_t *tep)
u32	transport_stop_listen (transport_proto_t tp, u32 conn_index)
u8	transport_protocol_is_cl (transport_proto_t tp)
static void	default_get_transport_endpoint (transport_connection_t *tc, transport_endpoint_t *tep, u8 is_lcl)
void	transport_get_endpoint (transport_proto_t tp, u32 conn_index, u32 thread_index, transport_endpoint_t *tep, u8 is_lcl)
void	transport_get_listener_endpoint (transport_proto_t tp, u32 conn_index, transport_endpoint_t *tep, u8 is_lcl)
void	transport_endpoint_del (u32 tepi)
static transport_endpoint_t *	transport_endpoint_new (void)
void	transport_endpoint_cleanup (u8 proto, ip46_address_t *lcl_ip, u16 port)
static void	transport_endpoint_mark_used (u8 proto, ip46_address_t *ip, u16 port)
int	transport_alloc_local_port (u8 proto, ip46_address_t *ip)
	Allocate local port and add if successful add entry to local endpoint table to mark the pair as used. More...
static clib_error_t *	transport_get_interface_ip (u32 sw_if_index, u8 is_ip4, ip46_address_t *addr)
static clib_error_t *	transport_find_local_ip_for_remote (u32 sw_if_index, transport_endpoint_t *rmt, ip46_address_t *lcl_addr)
int	transport_alloc_local_endpoint (u8 proto, transport_endpoint_cfg_t *rmt_cfg, ip46_address_t *lcl_addr, u16 *lcl_port)
u8 *	format_transport_pacer (u8 *s, va_list *args)
static u32	spacer_max_burst (spacer_t *pacer, u64 norm_time_now)
static void	spacer_update_bucket (spacer_t *pacer, u32 bytes)
static void	spacer_set_pace_rate (spacer_t *pacer, u64 rate_bytes_per_sec)
static u64	spacer_pace_rate (spacer_t *pacer)
void	transport_connection_tx_pacer_reset (transport_connection_t *tc, u32 rate_bytes_per_sec, u32 start_bucket, u64 time_now)
void	transport_connection_tx_pacer_init (transport_connection_t *tc, u32 rate_bytes_per_sec, u32 initial_bucket)
	Initialize tx pacer for connection. More...
void	transport_connection_tx_pacer_update (transport_connection_t *tc, u64 bytes_per_sec)
	Update tx pacer pacing rate. More...
u32	transport_connection_tx_pacer_burst (transport_connection_t *tc, u64 time_now)
	Get tx pacer max burst. More...
u32	transport_connection_snd_space (transport_connection_t *tc, u64 time_now, u16 mss)
	Get maximum tx burst allowed for transport connection. More...
u64	transport_connection_tx_pacer_rate (transport_connection_t *tc)
	Get tx pacer current rate. More...
void	transport_connection_update_tx_bytes (transport_connection_t *tc, u32 bytes)
	Update tx bytes for paced transport connection. More...
void	transport_connection_tx_pacer_update_bytes (transport_connection_t *tc, u32 bytes)
void	transport_init_tx_pacers_period (void)
	Initialize period for tx pacers. More...
void	transport_update_time (f64 time_now, u8 thread_index)
void	transport_enable_disable (vlib_main_t *vm, u8 is_en)
void	transport_init (void)

Variables
transport_proto_vft_t *	tp_vfts
	Per-type vector of transport protocol virtual function tables. More...
static u32	port_allocator_seed
static transport_endpoint_table_t	local_endpoints_table
static transport_endpoint_t *	local_endpoints
static clib_spinlock_t	local_endpoints_lock
static double	transport_pacer_period

Macro Definition Documentation

#define PORT_MASK   ((1 << 16)- 1)

Definition at line 394 of file transport.c.

#define SPACER_CPU_TICKS_PER_PERIOD   (1 << SPACER_CPU_TICKS_PER_PERIOD_SHIFT)

Definition at line 601 of file transport.c.

#define SPACER_CPU_TICKS_PER_PERIOD_SHIFT   10

Definition at line 600 of file transport.c.

#define TRANSPORT_PACER_MAX_BURST   (32 * TRANSPORT_PACER_MIN_MSS)

Definition at line 52 of file transport.c.

#define TRANSPORT_PACER_MIN_BURST   TRANSPORT_PACER_MIN_MSS

Definition at line 51 of file transport.c.

#define TRANSPORT_PACER_MIN_MSS   1460

Definition at line 50 of file transport.c.

Function Documentation

static void default_get_transport_endpoint ( transport_connection_t *  tc, transport_endpoint_t *  tep, u8  is_lcl  )

inlinestatic

Definition at line 347 of file transport.c.

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u8* format_transport_connection	(	u8 *	s,
		va_list *	args
	)

Definition at line 123 of file transport.c.

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u8* format_transport_half_open_connection	(	u8 *	s,
		va_list *	args
	)

Definition at line 164 of file transport.c.

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u8* format_transport_listen_connection	(	u8 *	s,
		va_list *	args
	)

Definition at line 150 of file transport.c.

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u8* format_transport_pacer	(	u8 *	s,
		va_list *	args
	)

Definition at line 604 of file transport.c.

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u8* format_transport_proto	(	u8 *	s,
		va_list *	args
	)

Definition at line 55 of file transport.c.

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u8* format_transport_proto_short	(	u8 *	s,
		va_list *	args
	)

Definition at line 89 of file transport.c.

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static u32 spacer_max_burst ( spacer_t *  pacer, u64  norm_time_now  )

inlinestatic

Definition at line 614 of file transport.c.

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static u64 spacer_pace_rate ( spacer_t *  pacer )

inlinestatic

Definition at line 643 of file transport.c.

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static void spacer_set_pace_rate ( spacer_t *  pacer, u64  rate_bytes_per_sec  )

inlinestatic

Definition at line 636 of file transport.c.

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static void spacer_update_bucket ( spacer_t *  pacer, u32  bytes  )

inlinestatic

Definition at line 629 of file transport.c.

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int transport_alloc_local_endpoint	(	u8	proto,
		transport_endpoint_cfg_t *	rmt_cfg,
		ip46_address_t *	lcl_addr,
		u16 *	lcl_port
	)

Definition at line 544 of file transport.c.

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int transport_alloc_local_port	(	u8	proto,
		ip46_address_t *	ip
	)

Allocate local port and add if successful add entry to local endpoint table to mark the pair as used.

Definition at line 447 of file transport.c.

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void transport_cleanup	(	transport_proto_t	tp,
		u32	conn_index,
		u8	thread_index
	)

Definition at line 310 of file transport.c.

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void transport_close	(	transport_proto_t	tp,
		u32	conn_index,
		u8	thread_index
	)

Definition at line 322 of file transport.c.

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int transport_connect	(	transport_proto_t	tp,
		transport_endpoint_cfg_t *	tep
	)

Definition at line 316 of file transport.c.

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u32 transport_connection_snd_space	(	transport_connection_t *	tc,
		u64	time_now,
		u16	mss
	)

Get maximum tx burst allowed for transport connection.

Parameters

tc	transport connection
time_now	current cpu time as returned by clib_cpu_time_now
mss	transport's mss

Definition at line 687 of file transport.c.

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u32 transport_connection_tx_pacer_burst	(	transport_connection_t *	tc,
		u64	time_now
	)

Get tx pacer max burst.

Parameters

tc	transport connection
time_now	current cpu time

Returns

max burst for connection

Definition at line 679 of file transport.c.

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void transport_connection_tx_pacer_init	(	transport_connection_t *	tc,
		u32	rate_bytes_per_sec,
		u32	initial_bucket
	)

Initialize tx pacer for connection.

Parameters

tc	transport connection
rate_bytes_per_second	initial byte rate
burst_bytes	initial burst size in bytes

Definition at line 660 of file transport.c.

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u64 transport_connection_tx_pacer_rate

(

transport_connection_t *

tc

)

Get tx pacer current rate.

Parameters

tc	transport connection

Returns

rate for connection in bytes/s

Definition at line 705 of file transport.c.

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void transport_connection_tx_pacer_reset	(	transport_connection_t *	tc,
		u32	rate_bytes_per_sec,
		u32	start_bucket,
		u64	time_now
	)

Definition at line 649 of file transport.c.

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void transport_connection_tx_pacer_update	(	transport_connection_t *	tc,
		u64	bytes_per_sec
	)

Update tx pacer pacing rate.

Parameters

tc	transport connection
bytes_per_sec	new pacing rate

Definition at line 672 of file transport.c.

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void transport_connection_tx_pacer_update_bytes	(	transport_connection_t *	tc,
		u32	bytes
	)

Definition at line 718 of file transport.c.

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void transport_connection_update_tx_bytes	(	transport_connection_t *	tc,
		u32	bytes
	)

Update tx bytes for paced transport connection.

If tx pacing is enabled, this update pacer bucket to account for the amount of bytes that have been sent.

Parameters

tc	transport connection
bytes	bytes recently sent

Definition at line 711 of file transport.c.

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void transport_enable_disable	(	vlib_main_t *	vm,
		u8	is_en
	)

Definition at line 743 of file transport.c.

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void transport_endpoint_cleanup	(	u8	proto,
		ip46_address_t *	lcl_ip,
		u16	port
	)

Definition at line 413 of file transport.c.

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void transport_endpoint_del

(

u32

tepi

)

Definition at line 397 of file transport.c.

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u32 transport_endpoint_lookup	(	transport_endpoint_table_t *	ht,
		u8	proto,
		ip46_address_t *	ip,
		u16	port
	)

Definition at line 212 of file transport.c.

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static void transport_endpoint_mark_used ( u8  proto, ip46_address_t *  ip, u16  port  )

static

Definition at line 430 of file transport.c.

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static transport_endpoint_t* transport_endpoint_new ( void  )

inlinestatic

Definition at line 405 of file transport.c.

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void transport_endpoint_table_add	(	transport_endpoint_table_t *	ht,
		u8	proto,
		transport_endpoint_t *	te,
		u32	value
	)

Definition at line 230 of file transport.c.

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void transport_endpoint_table_del	(	transport_endpoint_table_t *	ht,
		u8	proto,
		transport_endpoint_t *	te
	)

Definition at line 244 of file transport.c.

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static clib_error_t* transport_find_local_ip_for_remote ( u32  sw_if_index, transport_endpoint_t *  rmt, ip46_address_t *  lcl_addr  )

static

Definition at line 510 of file transport.c.

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void transport_get_endpoint	(	transport_proto_t	tp,
		u32	conn_index,
		u32	thread_index,
		transport_endpoint_t *	tep,
		u8	is_lcl
	)

Definition at line 365 of file transport.c.

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static clib_error_t* transport_get_interface_ip ( u32  sw_if_index, u8  is_ip4, ip46_address_t *  addr  )

static

Definition at line 484 of file transport.c.

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void transport_get_listener_endpoint	(	transport_proto_t	tp,
		u32	conn_index,
		transport_endpoint_t *	tep,
		u8	is_lcl
	)

Definition at line 381 of file transport.c.

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u8 transport_half_open_has_fifos

(

transport_proto_t

tp

)

Definition at line 292 of file transport.c.

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void transport_init

(

void

)

Definition at line 754 of file transport.c.

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void transport_init_tx_pacers_period

(

void

)

Initialize period for tx pacers.

Defines a unit of time with respect to number of cpu cycles that is to be used by all tx pacers.

Definition at line 725 of file transport.c.

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transport_proto_vft_t* transport_protocol_get_vft

(

transport_proto_t

transport_proto

)

Get transport virtual function table.

Parameters

type	- session type (not protocol type)

Definition at line 284 of file transport.c.

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u8 transport_protocol_is_cl

(

transport_proto_t

tp

)

Definition at line 341 of file transport.c.

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transport_service_type_t transport_protocol_service_type

(

transport_proto_t

tp

)

Definition at line 298 of file transport.c.

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transport_tx_fn_type_t transport_protocol_tx_fn_type

(

transport_proto_t

tp

)

Definition at line 304 of file transport.c.

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void transport_register_protocol	(	transport_proto_t	transport_proto,
		const transport_proto_vft_t *	vft,
		fib_protocol_t	fib_proto,
		u32	output_node
	)

Register transport virtual function table.

Parameters

transport_proto	- transport protocol type (i.e., TCP, UDP ..)
vft	- virtual function table for transport proto
fib_proto	- network layer protocol
output_node	- output node index that session layer will hand off buffers to, for requested fib proto

Definition at line 266 of file transport.c.

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u32 transport_start_listen	(	transport_proto_t	tp,
		u32	session_index,
		transport_endpoint_t *	tep
	)

Definition at line 328 of file transport.c.

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u32 transport_stop_listen	(	transport_proto_t	tp,
		u32	conn_index
	)

Definition at line 335 of file transport.c.

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void transport_update_time	(	f64	time_now,
		u8	thread_index
	)

Definition at line 732 of file transport.c.

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uword unformat_transport_proto	(	unformat_input_t *	input,
		va_list *	args
	)

Definition at line 179 of file transport.c.

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Variable Documentation

transport_endpoint_t* local_endpoints

static

Definition at line 38 of file transport.c.

clib_spinlock_t local_endpoints_lock

static

Definition at line 43 of file transport.c.

transport_endpoint_table_t local_endpoints_table

static

Definition at line 33 of file transport.c.

u32 port_allocator_seed

static

Definition at line 28 of file transport.c.

transport_proto_vft_t* tp_vfts

Per-type vector of transport protocol virtual function tables.

Definition at line 23 of file transport.c.

double transport_pacer_period

static

Definition at line 48 of file transport.c.