// SPDX-License-Identifier: GPL-2.0-or-later /* * INET An implementation of the TCP/IP protocol suite for the LINUX * operating system. INET is implemented using the BSD Socket * interface as the means of communication with the user level. * * Holds initial configuration information for devices. * * Version: @(#)Space.c 1.0.7 08/12/93 * * Authors: Ross Biro * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> * Donald J. Becker, <becker@scyld.com> * * Changelog: * Stephen Hemminger (09/2003) * - get rid of pre-linked dev list, dynamic device allocation * Paul Gortmaker (03/2002) * - struct init cleanup, enable multiple ISA autoprobes. * Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 09/1999 * - fix sbni: s/device/net_device/ * Paul Gortmaker (06/98): * - sort probes in a sane way, make sure all (safe) probes * get run once & failed autoprobes don't autoprobe again.
*/ #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/netlink.h> #include <net/Space.h>
/* * This structure holds boot-time configured netdevice settings. They * are then used in the device probing.
*/ struct netdev_boot_setup { char name[IFNAMSIZ]; struct ifmap map;
}; #define NETDEV_BOOT_SETUP_MAX 8
/* Boot time configuration table */ staticstruct netdev_boot_setup dev_boot_setup[NETDEV_BOOT_SETUP_MAX];
/** * netdev_boot_setup_add - add new setup entry * @name: name of the device * @map: configured settings for the device * * Adds new setup entry to the dev_boot_setup list. The function * returns 0 on error and 1 on success. This is a generic routine to * all netdevices.
*/ staticint netdev_boot_setup_add(char *name, struct ifmap *map)
{ struct netdev_boot_setup *s; int i;
s = dev_boot_setup; for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) { if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
memset(s[i].name, 0, sizeof(s[i].name));
strscpy(s[i].name, name, IFNAMSIZ);
memcpy(&s[i].map, map, sizeof(s[i].map)); break;
}
}
return i >= NETDEV_BOOT_SETUP_MAX ? 0 : 1;
}
/** * netdev_boot_setup_check - check boot time settings * @dev: the netdevice * * Check boot time settings for the device. * The found settings are set for the device to be used * later in the device probing. * Returns 0 if no settings found, 1 if they are.
*/ int netdev_boot_setup_check(struct net_device *dev)
{ struct netdev_boot_setup *s = dev_boot_setup; int i;
/** * netdev_boot_base - get address from boot time settings * @prefix: prefix for network device * @unit: id for network device * * Check boot time settings for the base address of device. * The found settings are set for the device to be used * later in the device probing. * Returns 0 if no settings found.
*/ staticunsignedlong netdev_boot_base(constchar *prefix, int unit)
{ conststruct netdev_boot_setup *s = dev_boot_setup; char name[IFNAMSIZ]; int i;
sprintf(name, "%s%d", prefix, unit);
/* * If device already registered then return base of 1 * to indicate not to probe for this interface
*/ if (__dev_get_by_name(&init_net, name)) return 1;
for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) if (!strcmp(name, s[i].name)) return s[i].map.base_addr; return 0;
}
/* * Saves at boot time configured settings for any netdevice.
*/ staticint __init netdev_boot_setup(char *str)
{ int ints[5]; struct ifmap map;
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