freebsd-skq/sys/boot/common/dev_net.h
ian e91cf73a56 Refactor net_getparams() to make it easier to get params from sources other
than bootp and rarp.

The code which splits a serverip:/rootpath string into rootip and a plain
pathname is now a separate net_parse_rootpath() function that can be
called by others.  The code that sets the kernel env vars needed for
nfs_diskless is moved into net_open() so that the variables get set no
matter where the params came from.

There was already code in net_open() that allowed for the possibility that
some other entity has set up the network-related global variables.  It uses
the rootip variable as the key, assuming that if it is set all the other
required variables are set too.  These changes don't alter the existing
behavior, they just make it easier to actually write some new code to get
the params from another source (such as the U-Boot environment).
2015-05-18 15:46:43 +00:00

37 lines
1.5 KiB
C

/*-
* Copyright (c) 1998 Doug Rabson <dfr@freebsd.org>
* All rights reserved.
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _BOOT_DEV_NET_H_
#define _BOOT_DEV_NET_H_
extern struct devsw netdev;
uint32_t net_parse_rootpath(void);
#endif