cc_newreno.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <net/vnet.h>
#include <net/route.h>
#include <net/route/nhop.h>
#include <netinet/in_pcb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netinet/tcp_seq.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_log_buf.h>
#include <netinet/tcp_hpts.h>
#include <netinet/cc/cc.h>
#include <netinet/cc/cc_module.h>
#include <netinet/cc/cc_newreno.h>

Include dependency graph for cc_newreno.c:

Go to the source code of this file.

Macros
#define	V_newreno_beta   VNET(newreno_beta)
#define	V_newreno_beta_ecn   VNET(newreno_beta_ecn)

Functions
	__FBSDID ("$FreeBSD$")
static void	newreno_cb_destroy (struct cc_var *ccv)
static void	newreno_ack_received (struct cc_var *ccv, uint16_t type)
static void	newreno_after_idle (struct cc_var *ccv)
static void	newreno_cong_signal (struct cc_var *ccv, uint32_t type)
static int	newreno_ctl_output (struct cc_var *ccv, struct sockopt *sopt, void *buf)
static void	newreno_newround (struct cc_var *ccv, uint32_t round_cnt)
static void	newreno_rttsample (struct cc_var *ccv, uint32_t usec_rtt, uint32_t rxtcnt, uint32_t fas)
static int	newreno_cb_init (struct cc_var *ccv, void *)
static size_t	newreno_data_sz (void)
	VNET_DECLARE (uint32_t, newreno_beta)
	VNET_DEFINE (uint32_t, newreno_beta_ecn)
static void	newreno_log_hystart_event (struct cc_var *ccv, struct newreno *nreno, uint8_t mod, uint32_t flex1)
static int	newreno_beta_handler (SYSCTL_HANDLER_ARGS)
	SYSCTL_DECL (_net_inet_tcp_cc_newreno)
	SYSCTL_NODE (_net_inet_tcp_cc, OID_AUTO, newreno, CTLFLAG_RW|CTLFLAG_MPSAFE, NULL, "New Reno related settings")
	SYSCTL_PROC (_net_inet_tcp_cc_newreno, OID_AUTO, beta, CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW|CTLFLAG_NEEDGIANT, &VNET_NAME(newreno_beta), 3, &newreno_beta_handler, "IU", "New Reno beta, specified as number between 1 and 100")
	SYSCTL_PROC (_net_inet_tcp_cc_newreno, OID_AUTO, beta_ecn, CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW|CTLFLAG_NEEDGIANT, &VNET_NAME(newreno_beta_ecn), 3, &newreno_beta_handler, "IU", "New Reno beta ecn, specified as number between 1 and 100")
	DECLARE_CC_MODULE (newreno, &newreno_cc_algo)
	MODULE_VERSION (newreno, 2)

Variables
struct cc_algo	newreno_cc_algo

Macro Definition Documentation

V_newreno_beta

#define V_newreno_beta   VNET(newreno_beta)

Definition at line 101 of file cc_newreno.c.

V_newreno_beta_ecn

#define V_newreno_beta_ecn   VNET(newreno_beta_ecn)

Definition at line 103 of file cc_newreno.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

DECLARE_CC_MODULE()

DECLARE_CC_MODULE	(	newreno	,
		&	newreno_cc_algo
	)

MODULE_VERSION()

MODULE_VERSION	(	newreno	,
		2
	)

newreno_ack_received()

static void newreno_ack_received ( struct cc_var *  ccv, uint16_t  type  )

static

Definition at line 218 of file cc_newreno.c.

References cc_var::bytes_this_ack, CC_ACK, cc_var::cc_data, CC_NEWRENO_HYSTART_ENABLED, CC_NEWRENO_HYSTART_IN_CSS, CCF_ABC_SENTAWND, CCF_CWND_LIMITED, CCF_HYSTART_ALLOWED, CCF_USE_LOCAL_ABC, CCV, newreno::css_baseline_minrtt, newreno::css_current_round, newreno::css_current_round_minrtt, newreno::css_entered_at_round, newreno::css_fas_at_css_entry, newreno::css_lastround_minrtt, newreno::css_lowrtt_fas, newreno::css_rttsample_count, cc_var::flags, hystart_css_growth_div, hystart_maxrtt_thresh, hystart_minrtt_thresh, hystart_n_rttsamples, IN_RECOVERY, cc_var::labc, newreno::newreno_flags, newreno_log_hystart_event(), cc_var::nsegs, V_tcp_abc_l_var, and V_tcp_do_rfc3465.

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newreno_after_idle()

static void newreno_after_idle ( struct cc_var *  ccv )

static

Definition at line 349 of file cc_newreno.c.

References cc_var::cc_data, CC_NEWRENO_HYSTART_ENABLED, CCV, newreno_cc_after_idle(), newreno::newreno_flags, and newreno_log_hystart_event().

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newreno_beta_handler()

static int newreno_beta_handler ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 494 of file cc_newreno.c.

References V_cc_do_abe.

newreno_cb_destroy()

static void newreno_cb_destroy ( struct cc_var *  ccv )

static

Definition at line 212 of file cc_newreno.c.

References cc_var::cc_data.

newreno_cb_init()

static int newreno_cb_init ( struct cc_var *  ccv, void *  ptr  )

static

Definition at line 177 of file cc_newreno.c.

References newreno::beta, newreno::beta_ecn, cc_var::cc_data, CC_NEWRENO_HYSTART_ENABLED, cc_var::ccvc, newreno::css_baseline_minrtt, newreno::css_current_round, newreno::css_current_round_minrtt, newreno::css_entered_at_round, newreno::css_fas_at_css_entry, newreno::css_last_fas, newreno::css_lastround_minrtt, newreno::css_lowrtt_fas, newreno::css_rttsample_count, INP_WLOCK_ASSERT, newreno::newreno_flags, tcpcb::t_inpcb, cc_var::ccv_container::tcp, V_newreno_beta, and V_newreno_beta_ecn.

newreno_cong_signal()

static void newreno_cong_signal ( struct cc_var *  ccv, uint32_t  type  )

static

Definition at line 369 of file cc_newreno.c.

References newreno::beta, newreno::beta_ecn, cc_var::cc_data, CC_ECN, CC_NDUPACK, CC_NEWRENO_BETA_ECN_ENABLED, CC_NEWRENO_HYSTART_ENABLED, CC_RTO, CC_SIGPRIVMASK, CCV, cc_var::ccvc, ENTER_CONGRECOVERY, ENTER_RECOVERY, IN_CONGRECOVERY, IN_FASTRECOVERY, newreno::newreno_flags, newreno_log_hystart_event(), cc_var::ccv_container::tcp, tcp_fixed_maxseg(), V_cc_abe_frlossreduce, V_cc_do_abe, V_newreno_beta, and V_newreno_beta_ecn.

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newreno_ctl_output()

static int newreno_ctl_output ( struct cc_var *  ccv, struct sockopt *  sopt, void *  buf  )

static

Definition at line 443 of file cc_newreno.c.

References newreno::beta, newreno::beta_ecn, CC_ALGO, cc_var::cc_data, CC_NEWRENO_BETA, CC_NEWRENO_BETA_ECN, CC_NEWRENO_BETA_ECN_ENABLED, cc_var::ccvc, cc_newreno_opts::name, newreno_cc_algo, newreno::newreno_flags, cc_var::ccv_container::tcp, V_cc_do_abe, V_newreno_beta, V_newreno_beta_ecn, and cc_newreno_opts::val.

newreno_data_sz()

static size_t newreno_data_sz ( void  )

static

Definition at line 171 of file cc_newreno.c.

newreno_log_hystart_event()

static void newreno_log_hystart_event ( struct cc_var *  ccv, struct newreno *  nreno, uint8_t  mod, uint32_t  flex1  )

static

Definition at line 120 of file cc_newreno.c.

References tcpcb::ccv, cc_var::ccvc, newreno::css_baseline_minrtt, newreno::css_current_round, newreno::css_current_round_minrtt, newreno::css_entered_at_round, newreno::css_fas_at_css_entry, newreno::css_last_fas, newreno::css_lastround_minrtt, newreno::css_lowrtt_fas, newreno::css_rttsample_count, tcp_log_bbr::delivered, tcp_log_bbr::epoch, cc_var::flags, tcp_log_bbr::flex1, tcp_log_bbr::flex2, tcp_log_bbr::flex3, tcp_log_bbr::flex4, tcp_log_bbr::flex5, tcp_log_bbr::flex6, tcp_log_bbr::flex7, tcp_log_bbr::flex8, hystart_bblogs, inpcb::inp_socket, tcp_log_bbr::lt_epoch, newreno::newreno_flags, tcp_log_bbr::pkt_epoch, tcp_log_bbr::pkts_out, tcpcb::t_inpcb, tcpcb::t_logstate, cc_var::ccv_container::tcp, tcp_get_usecs(), TCP_HYSTART, TCP_LOG_EVENTP, TCP_LOG_STATE_OFF, tcp_log_bbr::timeStamp, and tcp_log_stackspecific::u_bbr.

Referenced by newreno_ack_received(), newreno_after_idle(), newreno_cong_signal(), newreno_newround(), and newreno_rttsample().

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newreno_newround()

static void newreno_newround ( struct cc_var *  ccv, uint32_t  round_cnt  )

static

Definition at line 514 of file cc_newreno.c.

References cc_var::cc_data, CC_NEWRENO_HYSTART_ENABLED, CC_NEWRENO_HYSTART_IN_CSS, CCF_HYSTART_CAN_SH_CWND, CCF_HYSTART_CONS_SSTH, CCV, newreno::css_current_round, newreno::css_current_round_minrtt, newreno::css_entered_at_round, newreno::css_fas_at_css_entry, newreno::css_lastround_minrtt, newreno::css_lowrtt_fas, newreno::css_rttsample_count, cc_var::flags, hystart_css_rounds, newreno::newreno_flags, and newreno_log_hystart_event().

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newreno_rttsample()

static void newreno_rttsample ( struct cc_var *  ccv, uint32_t  usec_rtt, uint32_t  rxtcnt, uint32_t  fas  )

static

Definition at line 555 of file cc_newreno.c.

References cc_var::cc_data, CC_NEWRENO_HYSTART_ENABLED, newreno::css_baseline_minrtt, newreno::css_current_round_minrtt, newreno::css_last_fas, newreno::css_lastround_minrtt, newreno::css_lowrtt_fas, newreno::css_rttsample_count, hystart_n_rttsamples, newreno::newreno_flags, and newreno_log_hystart_event().

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SYSCTL_DECL()

SYSCTL_DECL

(

_net_inet_tcp_cc_newreno

)

SYSCTL_NODE()

SYSCTL_NODE	(	_net_inet_tcp_cc	,
		OID_AUTO	,
		newreno	,
		CTLFLAG_RW|	CTLFLAG_MPSAFE,
		NULL	,
		"New Reno related settings"
	)

SYSCTL_PROC() [1/2]

SYSCTL_PROC	(	_net_inet_tcp_cc_newreno	,
		OID_AUTO	,
		beta	,
		CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW|	CTLFLAG_NEEDGIANT,
		&	VNET_NAMEnewreno_beta,
		3	,
		&	newreno_beta_handler,
		"IU"	,
		"New Reno	beta,
		specified as number between 1 and 100"
	)

SYSCTL_PROC() [2/2]

SYSCTL_PROC	(	_net_inet_tcp_cc_newreno	,
		OID_AUTO	,
		beta_ecn	,
		CTLFLAG_VNET|CTLTYPE_UINT|CTLFLAG_RW|	CTLFLAG_NEEDGIANT,
		&	VNET_NAMEnewreno_beta_ecn,
		3	,
		&	newreno_beta_handler,
		"IU"	,
		"New Reno beta	ecn,
		specified as number between 1 and 100"
	)

VNET_DECLARE()

VNET_DECLARE	(	uint32_t	,
		newreno_beta
	)

VNET_DEFINE()

VNET_DEFINE	(	uint32_t	,
		newreno_beta_ecn
	)

Variable Documentation

newreno_cc_algo

struct cc_algo newreno_cc_algo

Initial value:

= {
        .name = "newreno",
        .cb_destroy = newreno_cb_destroy,
        .ack_received = newreno_ack_received,
        .after_idle = newreno_after_idle,
        .cong_signal = newreno_cong_signal,
        .post_recovery = newreno_cc_post_recovery,
        .ctl_output = newreno_ctl_output,
        .newround = newreno_newround,
        .rttsample = newreno_rttsample,
        .cb_init = newreno_cb_init,
        .cc_data_sz = newreno_data_sz,
}

Definition at line 105 of file cc_newreno.c.

Referenced by newreno_ctl_output().