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Diffstat (limited to '')
| -rw-r--r-- | c/src/exec/libnetworking/sys/buf.h | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/c/src/exec/libnetworking/sys/buf.h b/c/src/exec/libnetworking/sys/buf.h deleted file mode 100644 index 6cca571141..0000000000 --- a/c/src/exec/libnetworking/sys/buf.h +++ /dev/null @@ -1,248 +0,0 @@ -/* - * Copyright (c) 1982, 1986, 1989, 1993 - * The Regents of the University of California. All rights reserved. - * (c) UNIX System Laboratories, Inc. - * All or some portions of this file are derived from material licensed - * to the University of California by American Telephone and Telegraph - * Co. or Unix System Laboratories, Inc. and are reproduced herein with - * the permission of UNIX System Laboratories, Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)buf.h 8.9 (Berkeley) 3/30/95 - * $Id$ - */ - -#ifndef _SYS_BUF_H_ -#define _SYS_BUF_H_ - -#include <sys/queue.h> - -#define NOLIST ((struct buf *)0x87654321) - -struct buf; - -struct iodone_chain { - long ic_prev_flags; - void (*ic_prev_iodone) __P((struct buf *)); - void *ic_prev_iodone_chain; - struct { - long ia_long; - void *ia_ptr; - } ic_args[5]; -}; - -typedef TAILQ_HEAD(buf_queue_head, buf) buf_queue_head, *buf_queue_head_t; - -/* - * The buffer header describes an I/O operation in the kernel. - */ -struct buf { - LIST_ENTRY(buf) b_hash; /* Hash chain. */ - LIST_ENTRY(buf) b_vnbufs; /* Buffer's associated vnode. */ - TAILQ_ENTRY(buf) b_freelist; /* Free list position if not active. */ - TAILQ_ENTRY(buf) b_act; /* Device driver queue when active. *new* */ - struct proc *b_proc; /* Associated proc; NULL if kernel. */ - long b_flags; /* B_* flags. */ - unsigned short b_qindex; /* buffer queue index */ - unsigned char b_usecount; /* buffer use count */ - int b_error; /* Errno value. */ - long b_bufsize; /* Allocated buffer size. */ - long b_bcount; /* Valid bytes in buffer. */ - long b_resid; /* Remaining I/O. */ - dev_t b_dev; /* Device associated with buffer. */ - struct { - caddr_t b_addr; /* Memory, superblocks, indirect etc. */ - } b_un; - caddr_t b_kvabase; /* base kva for buffer */ - int b_kvasize; /* size of kva for buffer */ - void *b_saveaddr; /* Original b_addr for physio. */ - daddr_t b_lblkno; /* Logical block number. */ - daddr_t b_blkno; /* Underlying physical block number. */ - /* Function to call upon completion. */ - void (*b_iodone) __P((struct buf *)); - /* For nested b_iodone's. */ - struct iodone_chain *b_iodone_chain; - struct vnode *b_vp; /* Device vnode. */ - int b_dirtyoff; /* Offset in buffer of dirty region. */ - int b_dirtyend; /* Offset of end of dirty region. */ - struct ucred *b_rcred; /* Read credentials reference. */ - struct ucred *b_wcred; /* Write credentials reference. */ - int b_validoff; /* Offset in buffer of valid region. */ - int b_validend; /* Offset of end of valid region. */ - daddr_t b_pblkno; /* physical block number */ - caddr_t b_savekva; /* saved kva for transfer while bouncing */ - void *b_driver1; /* for private use by the driver */ - void *b_driver2; /* for private use by the driver */ - void *b_spc; - union cluster_info { - TAILQ_HEAD(cluster_list_head, buf) cluster_head; - TAILQ_ENTRY(buf) cluster_entry; - } b_cluster; - struct vm_page *b_pages[btoc(MAXPHYS)]; - int b_npages; -}; - -/* Device driver compatibility definitions. */ -#define b_data b_un.b_addr /* b_un.b_addr is not changeable. */ - -/* - * These flags are kept in b_flags. - */ -#define B_AGE 0x00000001 /* Move to age queue when I/O done. */ -#define B_NEEDCOMMIT 0x00000002 /* Append-write in progress. */ -#define B_ASYNC 0x00000004 /* Start I/O, do not wait. */ -#define B_BAD 0x00000008 /* Bad block revectoring in progress. */ -#define B_BUSY 0x00000010 /* I/O in progress. */ -#define B_CACHE 0x00000020 /* Bread found us in the cache. */ -#define B_CALL 0x00000040 /* Call b_iodone from biodone. */ -#define B_DELWRI 0x00000080 /* Delay I/O until buffer reused. */ -#define B_DIRTY 0x00000100 /* Dirty page to be pushed out async. */ -#define B_DONE 0x00000200 /* I/O completed. */ -#define B_EINTR 0x00000400 /* I/O was interrupted */ -#define B_ERROR 0x00000800 /* I/O error occurred. */ -#define B_GATHERED 0x00001000 /* LFS: already in a segment. */ -#define B_INVAL 0x00002000 /* Does not contain valid info. */ -#define B_LOCKED 0x00004000 /* Locked in core (not reusable). */ -#define B_NOCACHE 0x00008000 /* Do not cache block after use. */ -#define B_MALLOC 0x00010000 /* malloced b_data */ -#define B_CLUSTEROK 0x00020000 /* Pagein op, so swap() can count it. */ -#define B_PHYS 0x00040000 /* I/O to user memory. */ -#define B_RAW 0x00080000 /* Set by physio for raw transfers. */ -#define B_READ 0x00100000 /* Read buffer. */ -#define B_TAPE 0x00200000 /* Magnetic tape I/O. */ -#define B_RELBUF 0x00400000 /* Release VMIO buffer. */ -#define B_WANTED 0x00800000 /* Process wants this buffer. */ -#define B_WRITE 0x00000000 /* Write buffer (pseudo flag). */ -#define B_WRITEINPROG 0x01000000 /* Write in progress. */ -#define B_XXX 0x02000000 /* Debugging flag. */ -#define B_PAGING 0x04000000 /* volatile paging I/O -- bypass VMIO */ -#define B_ORDERED 0x08000000 /* Must guarantee I/O ordering */ -#define B_VMIO 0x20000000 /* VMIO flag */ -#define B_CLUSTER 0x40000000 /* pagein op, so swap() can count it */ -#define B_BOUNCE 0x80000000 /* bounce buffer flag */ - -/* - * number of buffer hash entries - */ -#define BUFHSZ 512 - -/* - * buffer hash table calculation, originally by David Greenman - */ -#define BUFHASH(vnp, bn) \ - (&bufhashtbl[(((unsigned long)(vnp) >> 7)+(int)(bn)) % BUFHSZ]) - -/* - * Definitions for the buffer free lists. - */ -#define BUFFER_QUEUES 6 /* number of free buffer queues */ - -extern LIST_HEAD(bufhashhdr, buf) bufhashtbl[BUFHSZ], invalhash; -extern TAILQ_HEAD(bqueues, buf) bufqueues[BUFFER_QUEUES]; - -#define QUEUE_NONE 0 /* on no queue */ -#define QUEUE_LOCKED 1 /* locked buffers */ -#define QUEUE_LRU 2 /* useful buffers */ -#define QUEUE_VMIO 3 /* VMIO buffers */ -#define QUEUE_AGE 4 /* not-useful buffers */ -#define QUEUE_EMPTY 5 /* empty buffer headers*/ - -/* - * Zero out the buffer's data area. - */ -#define clrbuf(bp) { \ - bzero((bp)->b_data, (u_int)(bp)->b_bcount); \ - (bp)->b_resid = 0; \ -} - -/* Flags to low-level allocation routines. */ -#define B_CLRBUF 0x01 /* Request allocated buffer be cleared. */ -#define B_SYNC 0x02 /* Do all allocations synchronously. */ - -#ifdef KERNEL -extern int nbuf; /* The number of buffer headers */ -extern struct buf *buf; /* The buffer headers. */ -extern char *buffers; /* The buffer contents. */ -extern int bufpages; /* Number of memory pages in the buffer pool. */ -extern struct buf *swbuf; /* Swap I/O buffer headers. */ -extern int nswbuf; /* Number of swap I/O buffer headers. */ -extern TAILQ_HEAD(swqueue, buf) bswlist; - -void bufinit __P((void)); -void bremfree __P((struct buf *)); -int bread __P((struct vnode *, daddr_t, int, - struct ucred *, struct buf **)); -int breadn __P((struct vnode *, daddr_t, int, daddr_t *, int *, int, - struct ucred *, struct buf **)); -int bwrite __P((struct buf *)); -void bdwrite __P((struct buf *)); -void bawrite __P((struct buf *)); -int bowrite __P((struct buf *)); -void brelse __P((struct buf *)); -void bqrelse __P((struct buf *)); -int vfs_bio_awrite __P((struct buf *)); -struct buf * getpbuf __P((void)); -struct buf *incore __P((struct vnode *, daddr_t)); -struct buf *gbincore __P((struct vnode *, daddr_t)); -int inmem __P((struct vnode *, daddr_t)); -struct buf *getblk __P((struct vnode *, daddr_t, int, int, int)); -struct buf *geteblk __P((int)); -int allocbuf __P((struct buf *, int)); -int biowait __P((struct buf *)); -void biodone __P((struct buf *)); - -void cluster_callback __P((struct buf *)); -int cluster_read __P((struct vnode *, u_quad_t, daddr_t, long, - struct ucred *, struct buf **)); -int cluster_wbuild __P((struct vnode *, long, daddr_t, int)); -void cluster_write __P((struct buf *, u_quad_t)); -int physio __P((void (*)(struct buf *), struct buf *, dev_t, - int, u_int (*)(struct buf *), struct uio *)); -u_int minphys __P((struct buf *)); -void vfs_bio_clrbuf __P((struct buf *)); -void vfs_busy_pages __P((struct buf *, int clear_modify)); -void vfs_unbusy_pages(struct buf *); -void vwakeup __P((struct buf *)); -void vmapbuf __P((struct buf *)); -void vunmapbuf __P((struct buf *)); -void relpbuf __P((struct buf *)); -void brelvp __P((struct buf *)); -void bgetvp __P((struct vnode *, struct buf *)); -void pbgetvp __P((struct vnode *, struct buf *)); -void pbrelvp __P((struct buf *)); -void reassignbuf __P((struct buf *, struct vnode *)); -struct buf *trypbuf __P((void)); -void vm_bounce_alloc __P((struct buf *)); -void vm_bounce_free __P((struct buf *)); -vm_offset_t vm_bounce_kva_alloc __P((int)); -void vm_bounce_kva_alloc_free __P((vm_offset_t, int)); -#endif /* KERNEL */ - -#endif /* !_SYS_BUF_H_ */ |