#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/arb.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/qmath.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/rmlock.h>
#include <sys/systm.h>
#include <sys/stats.h>
#include <net/vnet.h>
#include <netinet/in.h>
#include <netinet/in_pcb.h>
#include <netinet/tcp.h>
#include <netinet/tcp_var.h>
#include <netinet/cc/cc.h>

Include dependency graph for tcp_stats.c:

Macros
#define	V_tcp_perconn_stats_sample_rates VNET(tcp_perconn_stats_sample_rates)

#define	V_tcp_stats_nrates VNET(tcp_stats_nrates)

Functions
	__FBSDID ("$FreeBSD$")

	VNET_DEFINE (int, tcp_perconn_stats_dflt_tpl)

	VNET_DEFINE (int, tcp_perconn_stats_enable)

	VNET_DEFINE_STATIC (struct stats_tpl_sample_rate *, tcp_perconn_stats_sample_rates)

	VNET_DEFINE_STATIC (int, tcp_stats_nrates)=0

static int	tcp_stats_tpl_sr_cb (enum stats_tpl_sr_cb_action action, struct stats_tpl_sample_rate *rates, int nrates, void *ctx)

	SYSCTL_INT (_net_inet_tcp, OID_AUTO, perconn_stats_enable, CTLFLAG_VNET\|CTLFLAG_RW, &VNET_NAME(tcp_perconn_stats_enable), 0, "Enable per-connection TCP stats gathering; 1 enables for all connections, " "2 enables random sampling across log id connection groups")

	SYSCTL_PROC (_net_inet_tcp, OID_AUTO, perconn_stats_sample_rates, CTLTYPE_STRING\|CTLFLAG_RW\|CTLFLAG_NEEDGIANT, tcp_stats_tpl_sr_cb, sizeof(struct rm_priotracker), stats_tpl_sample_rates, "A", "TCP stats per template random sampling rates, in CSV tpl_spec=percent " "key-value pairs (see stats(9) for template spec details)")

int	tcp_stats_init ()

int	tcp_stats_sample_rollthedice (struct tcpcb tp, void seed_bytes, size_t seed_len)

	RM_SYSINIT (tcp_stats_tpl_sampling_lock, &tcp_stats_tpl_sampling_lock, "tcp_stats_tpl_sampling_lock")

Variables
static struct rmlock	tcp_stats_tpl_sampling_lock

Macro Definition Documentation

◆ V_tcp_perconn_stats_sample_rates

#define V_tcp_perconn_stats_sample_rates VNET(tcp_perconn_stats_sample_rates)

Definition at line 70 of file tcp_stats.c.

◆ V_tcp_stats_nrates

#define V_tcp_stats_nrates VNET(tcp_stats_nrates)

Definition at line 71 of file tcp_stats.c.

Function Documentation

◆ __FBSDID()

__FBSDID ( "$FreeBSD$" )

◆ RM_SYSINIT()

RM_SYSINIT	(	tcp_stats_tpl_sampling_lock	,
		&	tcp_stats_tpl_sampling_lock,
		"tcp_stats_tpl_sampling_lock"
	)

◆ SYSCTL_INT()

SYSCTL_INT	(	_net_inet_tcp	,
		OID_AUTO	,
		perconn_stats_enable	,
		CTLFLAG_VNET\|	CTLFLAG_RW,
		&	VNET_NAMEtcp_perconn_stats_enable,
		0	,
		"Enable per-connection TCP stats gathering; 1 enables for all	connections,
		" "2 enables random sampling across log id connection groups"
	)

◆ SYSCTL_PROC()

SYSCTL_PROC	(	_net_inet_tcp	,
		OID_AUTO	,
		perconn_stats_sample_rates	,
		CTLTYPE_STRING\|CTLFLAG_RW\|	CTLFLAG_NEEDGIANT,
		tcp_stats_tpl_sr_cb	,
		sizeof(struct rm_priotracker)	,
		stats_tpl_sample_rates	,
		"A"	,
		"TCP stats per template random sampling	rates
	)

◆ tcp_stats_init()

int tcp_stats_init ( void )

Definition at line 95 of file tcp_stats.c.

References CC_ECN, CC_NDUPACK, CC_RTO, CC_RTO_ERR, VOI_TCP_ACKLEN, VOI_TCP_CALCFRWINDIFF, VOI_TCP_CSIG, VOI_TCP_FRWIN, VOI_TCP_GPUT, VOI_TCP_GPUT_ND, VOI_TCP_LCWIN, VOI_TCP_RETXPB, VOI_TCP_RTT, and VOI_TCP_TXPB.

Referenced by tcp_vnet_init().

Here is the caller graph for this function:

◆ tcp_stats_sample_rollthedice()

int tcp_stats_sample_rollthedice	(	struct tcpcb *	tp,
		void *	seed_bytes,
		size_t	seed_len
	)

Definition at line 187 of file tcp_stats.c.

References INP_WLOCK_ASSERT, tcpcb::t_inpcb, tcpcb::t_stats, tcp_stats_tpl_sampling_lock, V_tcp_perconn_stats_sample_rates, and V_tcp_stats_nrates.

Referenced by tcp_log_grow_tlb().

Here is the caller graph for this function:

◆ tcp_stats_tpl_sr_cb()

int tcp_stats_tpl_sr_cb	(	enum stats_tpl_sr_cb_action	action,
		struct stats_tpl_sample_rate **	rates,
		int *	nrates,
		void *	ctx
	)

static

Definition at line 219 of file tcp_stats.c.

References tcp_stats_tpl_sampling_lock, V_tcp_perconn_stats_sample_rates, and V_tcp_stats_nrates.

◆ VNET_DEFINE() [1/2]

VNET_DEFINE	(	int	,
		tcp_perconn_stats_dflt_tpl
	)

◆ VNET_DEFINE() [2/2]

VNET_DEFINE	(	int	,
		tcp_perconn_stats_enable
	)

◆ VNET_DEFINE_STATIC() [1/2]

VNET_DEFINE_STATIC	(	int	,
		tcp_stats_nrates
	)

pure virtual

◆ VNET_DEFINE_STATIC() [2/2]

VNET_DEFINE_STATIC	(	struct stats_tpl_sample_rate *	,
		tcp_perconn_stats_sample_rates
	)

Variable Documentation

◆ tcp_stats_tpl_sampling_lock

struct rmlock tcp_stats_tpl_sampling_lock