#include <sys/cdefs.h>
#include "opt_param.h"
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/domain.h>
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/protosw.h>
#include <sys/smp.h>
#include <sys/sysctl.h>
#include <security/mac/mac_framework.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_map.h>
#include <vm/uma.h>
#include <vm/uma_int.h>
#include <vm/uma_dbg.h>

Include dependency graph for kern_mbuf.c:

Functions
	__FBSDID ("$BSDSUniX$")

	SYSCTL_QUAD (_kern_ipc, OID_AUTO, maxmbufmem, CTLFLAG_RDTUN,&maxmbufmem, 0,"Maximum real memory allocateable to various mbuf types")

static void	tunable_mbinit (void *dummy)

	SYSINIT (tunable_mbinit, SI_SUB_KMEM, SI_ORDER_MIDDLE, tunable_mbinit, NULL)

static int	sysctl_nmbclusters (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern_ipc, OID_AUTO, nmbclusters, CTLTYPE_INT\|CTLFLAG_RW,&nmbclusters, 0, sysctl_nmbclusters,"IU","Maximum number of mbuf clusters allowed")

static int	sysctl_nmbjumbop (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern_ipc, OID_AUTO, nmbjumbop, CTLTYPE_INT\|CTLFLAG_RW,&nmbjumbop, 0, sysctl_nmbjumbop,"IU","Maximum number of mbuf page size jumbo clusters allowed")

static int	sysctl_nmbjumbo9 (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern_ipc, OID_AUTO, nmbjumbo9, CTLTYPE_INT\|CTLFLAG_RW,&nmbjumbo9, 0, sysctl_nmbjumbo9,"IU","Maximum number of mbuf 9k jumbo clusters allowed")

static int	sysctl_nmbjumbo16 (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern_ipc, OID_AUTO, nmbjumbo16, CTLTYPE_INT\|CTLFLAG_RW,&nmbjumbo16, 0, sysctl_nmbjumbo16,"IU","Maximum number of mbuf 16k jumbo clusters allowed")

static int	sysctl_nmbufs (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern_ipc, OID_AUTO, nmbufs, CTLTYPE_INT\|CTLFLAG_RW,&nmbufs, 0, sysctl_nmbufs,"IU","Maximum number of mbufs allowed")

	SYSCTL_STRUCT (_kern_ipc, OID_AUTO, mbstat, CTLFLAG_RD,&mbstat, mbstat,"Mbuf general information and statistics")

static int	mb_ctor_mbuf (void , int, void , int)

static int	mb_ctor_clust (void , int, void , int)

static int	mb_ctor_pack (void , int, void , int)

static void	mb_dtor_mbuf (void , int, void )

static void	mb_dtor_clust (void , int, void )

static void	mb_dtor_pack (void , int, void )

static int	mb_zinit_pack (void *, int, int)

static void	mb_zfini_pack (void *, int)

static void	mb_reclaim (void *)

static void *	mbuf_jumbo_alloc (uma_zone_t, int, uint8_t *, int)

	CTASSERT ((((MSIZE-1)^MSIZE)+1) >> 1==MSIZE)

static void	mbuf_init (void *dummy)

	SYSINIT (mbuf, SI_SUB_MBUF, SI_ORDER_FIRST, mbuf_init, NULL)

int	m_pkthdr_init (struct mbuf *m, int how)

Variables
int	nmbufs

int	nmbclusters

int	nmbjumbop

int	nmbjumbo9

int	nmbjumbo16

struct mbstat	mbstat

static quad_t	maxmbufmem

uma_zone_t	zone_mbuf

uma_zone_t	zone_clust

uma_zone_t	zone_pack

uma_zone_t	zone_jumbop

uma_zone_t	zone_jumbo9

uma_zone_t	zone_jumbo16

uma_zone_t	zone_ext_refcnt

Function Documentation

__FBSDID ( "$BSDSUniX$" )

CTASSERT ( (((MSIZE-1)^MSIZE)+1) >> 1 = =MSIZE )

int m_pkthdr_init	(	struct mbuf *	m,
		int	how
	)

Definition at line 707 of file kern_mbuf.c.

static int mb_ctor_clust	(	void *	mem,
		int	size,
		void *	arg,
		int	how
	)

static

Definition at line 546 of file kern_mbuf.c.

References panic(), type, zone_clust, zone_jumbo16, zone_jumbo9, and zone_jumbop.

Referenced by mbuf_init().

Here is the call graph for this function:

Here is the caller graph for this function:

static int mb_ctor_mbuf	(	void *	mem,
		int	size,
		void *	arg,
		int	how
	)

static

Definition at line 428 of file kern_mbuf.c.

References type.

Referenced by mbuf_init().

Here is the caller graph for this function:

static int mb_ctor_pack	(	void *	mem,
		int	size,
		void *	arg,
		int	how
	)

static

Definition at line 659 of file kern_mbuf.c.

References type.

Referenced by mbuf_init().

Here is the caller graph for this function:

static void mb_dtor_clust	(	void *	mem,
		int	size,
		void *	arg
	)

static

Definition at line 602 of file kern_mbuf.c.

Referenced by mbuf_init().

Here is the caller graph for this function:

static void mb_dtor_mbuf	(	void *	mem,
		int	size,
		void *	arg
	)

static

Definition at line 484 of file kern_mbuf.c.

References m_tag_delete_chain().

Referenced by mbuf_init().

Here is the call graph for this function:

Here is the caller graph for this function:

static void mb_dtor_pack	(	void *	mem,
		int	size,
		void *	arg
	)

static

Definition at line 505 of file kern_mbuf.c.

References m_tag_delete_chain(), zone_clust, and zone_pack.

Referenced by mbuf_init().

Here is the call graph for this function:

Here is the caller graph for this function:

static void mb_reclaim ( void * junk )

static

Definition at line 740 of file kern_mbuf.c.

References domains, and pr.

Referenced by mbuf_init().

Here is the caller graph for this function:

static void mb_zfini_pack	(	void *	mem,
		int	size
	)

static

Definition at line 641 of file kern_mbuf.c.

References zone_clust.

Referenced by mbuf_init().

Here is the caller graph for this function:

static int mb_zinit_pack	(	void *	mem,
		int	size,
		int	how
	)

static

Definition at line 621 of file kern_mbuf.c.

References zone_clust.

Referenced by mbuf_init().

Here is the caller graph for this function:

static void mbuf_init ( void * dummy )

static

Definition at line 301 of file kern_mbuf.c.

References mb_ctor_clust(), mb_ctor_mbuf(), mb_ctor_pack(), mb_dtor_clust(), mb_dtor_mbuf(), mb_dtor_pack(), mb_reclaim(), mb_zfini_pack(), mb_zinit_pack(), mbstat, mbuf_jumbo_alloc(), nmbclusters, nmbjumbo16, nmbjumbo9, nmbjumbop, nmbufs, zone_clust, zone_ext_refcnt, zone_jumbo16, zone_jumbo9, zone_jumbop, zone_mbuf, and zone_pack.

Here is the call graph for this function:

static void * mbuf_jumbo_alloc	(	uma_zone_t	zone,
		int	bytes,
		uint8_t *	flags,
		int	wait
	)

static

Definition at line 411 of file kern_mbuf.c.

Referenced by mbuf_init().

Here is the caller graph for this function:

static int sysctl_nmbclusters ( SYSCTL_HANDLER_ARGS )

static

Definition at line 160 of file kern_mbuf.c.

References nmbclusters, nmbjumbo16, nmbjumbo9, nmbjumbop, nmbufs, sysctl_handle_int(), and zone_clust.

Here is the call graph for this function:

static int sysctl_nmbjumbo16 ( SYSCTL_HANDLER_ARGS )

static

Definition at line 224 of file kern_mbuf.c.

References nmbclusters, nmbjumbo16, nmbjumbo9, nmbjumbop, nmbufs, sysctl_handle_int(), and zone_jumbo16.

Here is the call graph for this function:

static int sysctl_nmbjumbo9 ( SYSCTL_HANDLER_ARGS )

static

Definition at line 203 of file kern_mbuf.c.

References nmbclusters, nmbjumbo16, nmbjumbo9, nmbjumbop, nmbufs, sysctl_handle_int(), and zone_jumbo9.

Here is the call graph for this function:

static int sysctl_nmbjumbop ( SYSCTL_HANDLER_ARGS )

static

Definition at line 182 of file kern_mbuf.c.

References nmbclusters, nmbjumbo16, nmbjumbo9, nmbjumbop, nmbufs, sysctl_handle_int(), and zone_jumbop.

Here is the call graph for this function:

static int sysctl_nmbufs ( SYSCTL_HANDLER_ARGS )

static

Definition at line 245 of file kern_mbuf.c.

References nmbufs, sysctl_handle_int(), and zone_mbuf.

Here is the call graph for this function:

SYSCTL_PROC	(	_kern_ipc	,
		OID_AUTO	,
		nmbclusters	,
		CTLTYPE_INT\|	CTLFLAG_RW,
		&	nmbclusters,
		0	,
		sysctl_nmbclusters	,
		"IU"	,
		"Maximum number of mbuf clusters allowed"
	)

SYSCTL_PROC	(	_kern_ipc	,
		OID_AUTO	,
		nmbjumbop	,
		CTLTYPE_INT\|	CTLFLAG_RW,
		&	nmbjumbop,
		0	,
		sysctl_nmbjumbop	,
		"IU"	,
		"Maximum number of mbuf page size jumbo clusters allowed"
	)

SYSCTL_PROC	(	_kern_ipc	,
		OID_AUTO	,
		nmbjumbo9	,
		CTLTYPE_INT\|	CTLFLAG_RW,
		&	nmbjumbo9,
		0	,
		sysctl_nmbjumbo9	,
		"IU"	,
		"Maximum number of mbuf 9k jumbo clusters allowed"
	)

SYSCTL_PROC	(	_kern_ipc	,
		OID_AUTO	,
		nmbjumbo16	,
		CTLTYPE_INT\|	CTLFLAG_RW,
		&	nmbjumbo16,
		0	,
		sysctl_nmbjumbo16	,
		"IU"	,
		"Maximum number of mbuf 16k jumbo clusters allowed"
	)