#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bio.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/sglist.h>
#include <sys/uio.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <sys/ktr.h>

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Data Structures
struct	sgsave

Macros
#define	SGLIST_SAVE(sg, sgsave)

#define	SGLIST_RESTORE(sg, sgsave)

Functions
	__FBSDID ("$BSDSUniX$")

static	MALLOC_DEFINE (M_SGLIST,"sglist","scatter/gather lists")

static __inline int	_sglist_append_range (struct sglist sg, struct sglist_seg *ssp, vm_paddr_t paddr, size_t len)

static __inline int	_sglist_append_buf (struct sglist sg, void buf, size_t len, pmap_t pmap, size_t *donep)

int	sglist_count (void *buf, size_t len)

struct sglist *	sglist_alloc (int nsegs, int mflags)

void	sglist_free (struct sglist *sg)

int	sglist_append (struct sglist sg, void buf, size_t len)

int	sglist_append_bio (struct sglist sg, struct bio bp)

int	sglist_append_phys (struct sglist *sg, vm_paddr_t paddr, size_t len)

int	sglist_append_mbuf (struct sglist sg, struct mbuf m0)

int	sglist_append_user (struct sglist sg, void buf, size_t len, struct thread *td)

int	sglist_append_uio (struct sglist sg, struct uio uio)

int	sglist_consume_uio (struct sglist sg, struct uio uio, size_t resid)

struct sglist *	sglist_build (void *buf, size_t len, int mflags)

struct sglist *	sglist_clone (struct sglist *sg, int mflags)

size_t	sglist_length (struct sglist *sg)

int	sglist_split (struct sglist original, struct sglist *head, size_t length, int mflags)

int	sglist_join (struct sglist first, struct sglist second)

int	sglist_slice (struct sglist original, struct sglist *slice, size_t offset, size_t length, int mflags)

Macro Definition Documentation

#define SGLIST_RESTORE	(	sg,
		sgsave
	)

Value:

do {                                    \
        (sg)->sg_nseg = (sgsave).sg_nseg;                               \
        if ((sgsave).sg_nseg > 0)                                       \
                (sg)->sg_segs[(sgsave).sg_nseg - 1].ss_len = (sgsave).ss_len; \
} while (0)

Definition at line 72 of file subr_sglist.c.

Referenced by sglist_append(), sglist_append_bio(), sglist_append_mbuf(), sglist_append_phys(), sglist_append_uio(), and sglist_append_user().

#define SGLIST_SAVE	(	sg,
		sgsave
	)

Value:

do {                                    \
        (sgsave).sg_nseg = (sg)->sg_nseg;                               \
        if ((sgsave).sg_nseg > 0)                                       \
                (sgsave).ss_len = (sg)->sg_segs[(sgsave).sg_nseg - 1].ss_len; \
        else                                                            \
                (sgsave).ss_len = 0;                                    \
} while (0)

Definition at line 64 of file subr_sglist.c.

Referenced by sglist_append(), sglist_append_bio(), sglist_append_mbuf(), sglist_append_phys(), sglist_append_uio(), and sglist_append_user().

Function Documentation

__FBSDID ( "$BSDSUniX$" )

static __inline int _sglist_append_buf	(	struct sglist *	sg,
		void *	buf,
		size_t	len,
		pmap_t	pmap,
		size_t *	donep
	)

static

Definition at line 109 of file subr_sglist.c.

References _sglist_append_range().

Referenced by sglist_append(), sglist_append_uio(), sglist_append_user(), and sglist_consume_uio().

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static __inline int _sglist_append_range	(	struct sglist *	sg,
		struct sglist_seg **	ssp,
		vm_paddr_t	paddr,
		size_t	len
	)

static

Definition at line 84 of file subr_sglist.c.

Referenced by _sglist_append_buf(), and sglist_append_phys().

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static MALLOC_DEFINE	(	M_SGLIST	,
		"sglist"	,
		"scatter/gather lists"
	)

static

struct sglist* sglist_alloc	(	int	nsegs,
		int	mflags
	)

Definition at line 200 of file subr_sglist.c.

References malloc().

Referenced by sglist_build(), sglist_clone(), sglist_slice(), and sglist_split().

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int sglist_append	(	struct sglist *	sg,
		void *	buf,
		size_t	len
	)

Definition at line 229 of file subr_sglist.c.

References _sglist_append_buf(), SGLIST_RESTORE, and SGLIST_SAVE.

Referenced by sglist_append_bio(), sglist_append_mbuf(), and sglist_build().

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int sglist_append_bio	(	struct sglist *	sg,
		struct bio *	bp
	)

Definition at line 250 of file subr_sglist.c.

References sglist_append(), sglist_append_phys(), SGLIST_RESTORE, and SGLIST_SAVE.

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int sglist_append_mbuf	(	struct sglist *	sg,
		struct mbuf *	m0
	)

Definition at line 317 of file subr_sglist.c.

References sglist_append(), SGLIST_RESTORE, and SGLIST_SAVE.

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int sglist_append_phys	(	struct sglist *	sg,
		vm_paddr_t	paddr,
		size_t	len
	)

Definition at line 286 of file subr_sglist.c.

References _sglist_append_range(), SGLIST_RESTORE, SGLIST_SAVE, and sgsave::ss_len.

Referenced by sglist_append_bio().

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int sglist_append_uio	(	struct sglist *	sg,
		struct uio *	uio
	)

Definition at line 367 of file subr_sglist.c.

References _sglist_append_buf(), SGLIST_RESTORE, and SGLIST_SAVE.

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int sglist_append_user	(	struct sglist *	sg,
		void *	buf,
		size_t	len,
		struct thread *	td
	)

Definition at line 346 of file subr_sglist.c.

References _sglist_append_buf(), SGLIST_RESTORE, and SGLIST_SAVE.

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struct sglist* sglist_build	(	void *	buf,
		size_t	len,
		int	mflags
	)

Definition at line 465 of file subr_sglist.c.

References sglist_alloc(), sglist_append(), sglist_count(), and sglist_free().

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struct sglist* sglist_clone	(	struct sglist *	sg,
		int	mflags
	)

Definition at line 488 of file subr_sglist.c.

References sglist_alloc().

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int sglist_consume_uio	(	struct sglist *	sg,
		struct uio *	uio,
		size_t	resid
	)

Definition at line 415 of file subr_sglist.c.

References _sglist_append_buf().

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int sglist_count	(	void *	buf,
		size_t	len
	)

Definition at line 170 of file subr_sglist.c.

Referenced by sglist_build().

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void sglist_free ( struct sglist * sg )

Definition at line 216 of file subr_sglist.c.

References free().

Referenced by sglist_build().

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int sglist_join	(	struct sglist *	first,
		struct sglist *	second
	)

Definition at line 615 of file subr_sglist.c.

size_t sglist_length ( struct sglist * sg )

Definition at line 508 of file subr_sglist.c.

int sglist_slice	(	struct sglist *	original,
		struct sglist **	slice,
		size_t	offset,
		size_t	length,
		int	mflags
	)

Definition at line 668 of file subr_sglist.c.

References count, and sglist_alloc().

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int sglist_split	(	struct sglist *	original,
		struct sglist **	head,
		size_t	length,
		int	mflags
	)

Definition at line 537 of file subr_sglist.c.

References count, and sglist_alloc().

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Data Structures

Macros

Functions

Macro Definition Documentation

Function Documentation