NetBSD/sys/nfs/nfsdiskless.h
cegger c479884027 change nfs boot behaviour to automatically try next boot method if boot information are incomplete to succeed.
That way, it is possible combine static and dhcp boot:
  For example, to boot diskless you can specify the nfs-server and the rootpath statically. All other information will be taken via dhcp.

Patch has been presented on port-xen, tech-kern and tech-net:
http://mail-index.netbsd.org/port-xen/2008/10/24/msg004488.html
http://mail-index.netbsd.org/tech-kern/2008/10/24/msg003255.html
http://mail-index.netbsd.org/tech-net/2008/10/24/msg000864.html

No comments, no objections.
2008-10-27 10:58:22 +00:00

102 lines
4.1 KiB
C

/* $NetBSD: nfsdiskless.h,v 1.29 2008/10/27 10:58:23 cegger Exp $ */
/*-
* Copyright (c) 1995, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass and Gordon W. Ross.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*
* @(#)nfsdiskless.h 8.1 (Berkeley) 6/10/93
*/
#ifndef _NFS_NFSDISKLESS_H_
#define _NFS_NFSDISKLESS_H_
/*
* Structure holds parameters needed by nfs_mountroot(),
* which are filled in by nfs_boot_init() using either
* BOOTP (RFC951, RFC1048) or Sun RPC/bootparams. These
* parameters are INET specific because nfs_boot_init()
* currently supports only AF_INET protocols.
*
* NB: All fields are stored in net byte order to avoid hassles
* with client/server byte ordering differences.
*/
struct nfs_dlmount {
struct nfs_args ndm_args;
struct sockaddr ndm_saddr; /* Address of file server */
char ndm_host[MNAMELEN]; /* server:pathname */
u_char ndm_fh[NFSX_V3FHMAX]; /* The file's file handle */
};
struct nfs_diskless {
/* the interface used */
struct ifnet *nd_ifp;
/* A collection of IP addresses, for convenience. */
struct in_addr nd_myip; /* My IP address */
struct in_addr nd_mask; /* My netmask */
struct in_addr nd_gwip; /* My gateway */
/* Information for each mount point we need. */
struct nfs_dlmount nd_root; /* Mount info for root */
#ifdef TFTPROOT
char nd_bootfile[MNAMELEN]; /* Boot file */
int nd_nomount;
#endif
};
#ifdef _KERNEL
int nfs_boot_init (struct nfs_diskless *nd, struct lwp *lwp);
void nfs_boot_cleanup (struct nfs_diskless *nd, struct lwp *lwp);
int nfs_boot_ifupdown (struct ifnet *, struct lwp *, int);
int nfs_boot_setaddress (struct ifnet *, struct lwp *,
uint32_t, uint32_t, uint32_t);
int nfs_boot_deladdress (struct ifnet *, struct lwp *, uint32_t);
void nfs_boot_flushrt (struct ifnet *);
int nfs_boot_setrecvtimo (struct socket *);
int nfs_boot_enbroadcast (struct socket *);
int nfs_boot_sobind_ipport (struct socket *, uint16_t, struct lwp *);
int nfs_boot_sendrecv (struct socket *, struct mbuf *,
int (*)(struct mbuf*, void*, int), struct mbuf*,
int (*)(struct mbuf*, void*), struct mbuf**,
struct mbuf**, void*, struct lwp *);
int nfs_bootdhcp (struct nfs_diskless *, struct lwp *, int *);
int nfs_bootparam (struct nfs_diskless *, struct lwp *, int *);
int nfs_bootstatic (struct nfs_diskless *, struct lwp *, int *);
extern int (*nfs_bootstatic_callback)(struct nfs_diskless *);
#define NFS_BOOT_HAS_MYIP 0x01
#define NFS_BOOT_HAS_GWIP 0x02
#define NFS_BOOT_HAS_MASK 0x04
#define NFS_BOOT_HAS_SERVADDR 0x08
#define NFS_BOOT_HAS_SERVER 0x10
#define NFS_BOOT_NOSTATIC 0x20
#define NFS_BOOT_HAS_ROOTPATH 0x40
#define NFS_BOOT_ALLINFO (NFS_BOOT_HAS_MYIP|NFS_BOOT_HAS_GWIP|NFS_BOOT_HAS_MASK|NFS_BOOT_HAS_SERVADDR|NFS_BOOT_HAS_SERVER|NFS_BOOT_HAS_ROOTPATH)
#endif /* _KERNEL */
#endif /* _NFS_NFSDISKLESS_H_ */