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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6

Browse source 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft-2.6:
  ibft: Use IBFT_SIGN instead of open-coding the search string.
  ibft: convert iscsi_ibft module to iscsi boot lib
  ibft: separate ibft parsing from sysfs interface
  ibft: For UEFI machines actually do scan ACPI for iBFT.
  ibft: Update iBFT handling for v1.03 of the spec.
This commit is contained in:
Linus Torvalds 2010-08-04 11:25:58 -07:00
commit 5abd9ccced
7 changed files with 924 additions and 484 deletions
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9
drivers/firmware/Kconfig
View file

@ -122,8 +122,17 @@ config ISCSI_IBFT_FIND
is necessary for iSCSI Boot Firmware Table Attributes module to work
properly.
config ISCSI_BOOT_SYSFS
tristate "iSCSI Boot Sysfs Interface"
default n
help
This option enables support for exposing iSCSI boot information
via sysfs to userspace. If you wish to export this information,
say Y. Otherwise, say N.
config ISCSI_IBFT
tristate "iSCSI Boot Firmware Table Attributes module"
select ISCSI_BOOT_SYSFS
depends on ISCSI_IBFT_FIND
default n
help

1
drivers/firmware/Makefile
View file

@ -10,4 +10,5 @@ obj-$(CONFIG_DCDBAS) += dcdbas.o
obj-$(CONFIG_DMIID) += dmi-id.o
obj-$(CONFIG_ISCSI_IBFT_FIND) += iscsi_ibft_find.o
obj-$(CONFIG_ISCSI_IBFT) += iscsi_ibft.o
obj-$(CONFIG_ISCSI_BOOT_SYSFS) += iscsi_boot_sysfs.o
obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o

481
drivers/firmware/iscsi_boot_sysfs.c Normal file
View file

@ -0,0 +1,481 @@
/*
* Export the iSCSI boot info to userland via sysfs.
*
* Copyright (C) 2010 Red Hat, Inc. All rights reserved.
* Copyright (C) 2010 Mike Christie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2.0 as published by
* the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/capability.h>
#include <linux/iscsi_boot_sysfs.h>
MODULE_AUTHOR("Mike Christie <michaelc@cs.wisc.edu>");
MODULE_DESCRIPTION("sysfs interface and helpers to export iSCSI boot information");
MODULE_LICENSE("GPL");
/*
* The kobject and attribute structures.
*/
struct iscsi_boot_attr {
struct attribute attr;
int type;
ssize_t (*show) (void *data, int type, char *buf);
};
/*
* The routine called for all sysfs attributes.
*/
static ssize_t iscsi_boot_show_attribute(struct kobject *kobj,
struct attribute *attr, char *buf)
{
struct iscsi_boot_kobj *boot_kobj =
container_of(kobj, struct iscsi_boot_kobj, kobj);
struct iscsi_boot_attr *boot_attr =
container_of(attr, struct iscsi_boot_attr, attr);
ssize_t ret = -EIO;
char *str = buf;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (boot_kobj->show)
ret = boot_kobj->show(boot_kobj->data, boot_attr->type, str);
return ret;
}
static const struct sysfs_ops iscsi_boot_attr_ops = {
.show = iscsi_boot_show_attribute,
};
static void iscsi_boot_kobj_release(struct kobject *kobj)
{
struct iscsi_boot_kobj *boot_kobj =
container_of(kobj, struct iscsi_boot_kobj, kobj);
kfree(boot_kobj->data);
kfree(boot_kobj);
}
static struct kobj_type iscsi_boot_ktype = {
.release = iscsi_boot_kobj_release,
.sysfs_ops = &iscsi_boot_attr_ops,
};
#define iscsi_boot_rd_attr(fnname, sysfs_name, attr_type) \
static struct iscsi_boot_attr iscsi_boot_attr_##fnname = { \
.attr = { .name = __stringify(sysfs_name), .mode = 0444 }, \
.type = attr_type, \
}
/* Target attrs */
iscsi_boot_rd_attr(tgt_index, index, ISCSI_BOOT_TGT_INDEX);
iscsi_boot_rd_attr(tgt_flags, flags, ISCSI_BOOT_TGT_FLAGS);
iscsi_boot_rd_attr(tgt_ip, ip-addr, ISCSI_BOOT_TGT_IP_ADDR);
iscsi_boot_rd_attr(tgt_port, port, ISCSI_BOOT_TGT_PORT);
iscsi_boot_rd_attr(tgt_lun, lun, ISCSI_BOOT_TGT_LUN);
iscsi_boot_rd_attr(tgt_chap, chap-type, ISCSI_BOOT_TGT_CHAP_TYPE);
iscsi_boot_rd_attr(tgt_nic, nic-assoc, ISCSI_BOOT_TGT_NIC_ASSOC);
iscsi_boot_rd_attr(tgt_name, target-name, ISCSI_BOOT_TGT_NAME);
iscsi_boot_rd_attr(tgt_chap_name, chap-name, ISCSI_BOOT_TGT_CHAP_NAME);
iscsi_boot_rd_attr(tgt_chap_secret, chap-secret, ISCSI_BOOT_TGT_CHAP_SECRET);
iscsi_boot_rd_attr(tgt_chap_rev_name, rev-chap-name,
ISCSI_BOOT_TGT_REV_CHAP_NAME);
iscsi_boot_rd_attr(tgt_chap_rev_secret, rev-chap-name-secret,
ISCSI_BOOT_TGT_REV_CHAP_SECRET);
static struct attribute *target_attrs[] = {
&iscsi_boot_attr_tgt_index.attr,
&iscsi_boot_attr_tgt_flags.attr,
&iscsi_boot_attr_tgt_ip.attr,
&iscsi_boot_attr_tgt_port.attr,
&iscsi_boot_attr_tgt_lun.attr,
&iscsi_boot_attr_tgt_chap.attr,
&iscsi_boot_attr_tgt_nic.attr,
&iscsi_boot_attr_tgt_name.attr,
&iscsi_boot_attr_tgt_chap_name.attr,
&iscsi_boot_attr_tgt_chap_secret.attr,
&iscsi_boot_attr_tgt_chap_rev_name.attr,
&iscsi_boot_attr_tgt_chap_rev_secret.attr,
NULL
};
static mode_t iscsi_boot_tgt_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct iscsi_boot_kobj *boot_kobj =
container_of(kobj, struct iscsi_boot_kobj, kobj);
if (attr == &iscsi_boot_attr_tgt_index.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_INDEX);
else if (attr == &iscsi_boot_attr_tgt_flags.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_FLAGS);
else if (attr == &iscsi_boot_attr_tgt_ip.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_IP_ADDR);
else if (attr == &iscsi_boot_attr_tgt_port.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_PORT);
else if (attr == &iscsi_boot_attr_tgt_lun.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_LUN);
else if (attr == &iscsi_boot_attr_tgt_chap.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_CHAP_TYPE);
else if (attr == &iscsi_boot_attr_tgt_nic.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_NIC_ASSOC);
else if (attr == &iscsi_boot_attr_tgt_name.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_NAME);
else if (attr == &iscsi_boot_attr_tgt_chap_name.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_CHAP_NAME);
else if (attr == &iscsi_boot_attr_tgt_chap_secret.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_CHAP_SECRET);
else if (attr == &iscsi_boot_attr_tgt_chap_rev_name.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_REV_CHAP_NAME);
else if (attr == &iscsi_boot_attr_tgt_chap_rev_secret.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_TGT_REV_CHAP_SECRET);
return 0;
}
static struct attribute_group iscsi_boot_target_attr_group = {
.attrs = target_attrs,
.is_visible = iscsi_boot_tgt_attr_is_visible,
};
/* Ethernet attrs */
iscsi_boot_rd_attr(eth_index, index, ISCSI_BOOT_ETH_INDEX);
iscsi_boot_rd_attr(eth_flags, flags, ISCSI_BOOT_ETH_FLAGS);
iscsi_boot_rd_attr(eth_ip, ip-addr, ISCSI_BOOT_ETH_IP_ADDR);
iscsi_boot_rd_attr(eth_subnet, subnet-mask, ISCSI_BOOT_ETH_SUBNET_MASK);
iscsi_boot_rd_attr(eth_origin, origin, ISCSI_BOOT_ETH_ORIGIN);
iscsi_boot_rd_attr(eth_gateway, gateway, ISCSI_BOOT_ETH_GATEWAY);
iscsi_boot_rd_attr(eth_primary_dns, primary-dns, ISCSI_BOOT_ETH_PRIMARY_DNS);
iscsi_boot_rd_attr(eth_secondary_dns, secondary-dns,
ISCSI_BOOT_ETH_SECONDARY_DNS);
iscsi_boot_rd_attr(eth_dhcp, dhcp, ISCSI_BOOT_ETH_DHCP);
iscsi_boot_rd_attr(eth_vlan, vlan, ISCSI_BOOT_ETH_VLAN);
iscsi_boot_rd_attr(eth_mac, mac, ISCSI_BOOT_ETH_MAC);
iscsi_boot_rd_attr(eth_hostname, hostname, ISCSI_BOOT_ETH_HOSTNAME);
static struct attribute *ethernet_attrs[] = {
&iscsi_boot_attr_eth_index.attr,
&iscsi_boot_attr_eth_flags.attr,
&iscsi_boot_attr_eth_ip.attr,
&iscsi_boot_attr_eth_subnet.attr,
&iscsi_boot_attr_eth_origin.attr,
&iscsi_boot_attr_eth_gateway.attr,
&iscsi_boot_attr_eth_primary_dns.attr,
&iscsi_boot_attr_eth_secondary_dns.attr,
&iscsi_boot_attr_eth_dhcp.attr,
&iscsi_boot_attr_eth_vlan.attr,
&iscsi_boot_attr_eth_mac.attr,
&iscsi_boot_attr_eth_hostname.attr,
NULL
};
static mode_t iscsi_boot_eth_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct iscsi_boot_kobj *boot_kobj =
container_of(kobj, struct iscsi_boot_kobj, kobj);
if (attr == &iscsi_boot_attr_eth_index.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_INDEX);
else if (attr == &iscsi_boot_attr_eth_flags.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_FLAGS);
else if (attr == &iscsi_boot_attr_eth_ip.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_IP_ADDR);
else if (attr == &iscsi_boot_attr_eth_subnet.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_SUBNET_MASK);
else if (attr == &iscsi_boot_attr_eth_origin.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_ORIGIN);
else if (attr == &iscsi_boot_attr_eth_gateway.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_GATEWAY);
else if (attr == &iscsi_boot_attr_eth_primary_dns.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_PRIMARY_DNS);
else if (attr == &iscsi_boot_attr_eth_secondary_dns.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_SECONDARY_DNS);
else if (attr == &iscsi_boot_attr_eth_dhcp.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_DHCP);
else if (attr == &iscsi_boot_attr_eth_vlan.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_VLAN);
else if (attr == &iscsi_boot_attr_eth_mac.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_MAC);
else if (attr == &iscsi_boot_attr_eth_hostname.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_ETH_HOSTNAME);
return 0;
}
static struct attribute_group iscsi_boot_ethernet_attr_group = {
.attrs = ethernet_attrs,
.is_visible = iscsi_boot_eth_attr_is_visible,
};
/* Initiator attrs */
iscsi_boot_rd_attr(ini_index, index, ISCSI_BOOT_INI_INDEX);
iscsi_boot_rd_attr(ini_flags, flags, ISCSI_BOOT_INI_FLAGS);
iscsi_boot_rd_attr(ini_isns, isns-server, ISCSI_BOOT_INI_ISNS_SERVER);
iscsi_boot_rd_attr(ini_slp, slp-server, ISCSI_BOOT_INI_SLP_SERVER);
iscsi_boot_rd_attr(ini_primary_radius, pri-radius-server,
ISCSI_BOOT_INI_PRI_RADIUS_SERVER);
iscsi_boot_rd_attr(ini_secondary_radius, sec-radius-server,
ISCSI_BOOT_INI_SEC_RADIUS_SERVER);
iscsi_boot_rd_attr(ini_name, initiator-name, ISCSI_BOOT_INI_INITIATOR_NAME);
static struct attribute *initiator_attrs[] = {
&iscsi_boot_attr_ini_index.attr,
&iscsi_boot_attr_ini_flags.attr,
&iscsi_boot_attr_ini_isns.attr,
&iscsi_boot_attr_ini_slp.attr,
&iscsi_boot_attr_ini_primary_radius.attr,
&iscsi_boot_attr_ini_secondary_radius.attr,
&iscsi_boot_attr_ini_name.attr,
NULL
};
static mode_t iscsi_boot_ini_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int i)
{
struct iscsi_boot_kobj *boot_kobj =
container_of(kobj, struct iscsi_boot_kobj, kobj);
if (attr == &iscsi_boot_attr_ini_index.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_INDEX);
if (attr == &iscsi_boot_attr_ini_flags.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_FLAGS);
if (attr == &iscsi_boot_attr_ini_isns.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_ISNS_SERVER);
if (attr == &iscsi_boot_attr_ini_slp.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_SLP_SERVER);
if (attr == &iscsi_boot_attr_ini_primary_radius.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_PRI_RADIUS_SERVER);
if (attr == &iscsi_boot_attr_ini_secondary_radius.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_SEC_RADIUS_SERVER);
if (attr == &iscsi_boot_attr_ini_name.attr)
return boot_kobj->is_visible(boot_kobj->data,
ISCSI_BOOT_INI_INITIATOR_NAME);
return 0;
}
static struct attribute_group iscsi_boot_initiator_attr_group = {
.attrs = initiator_attrs,
.is_visible = iscsi_boot_ini_attr_is_visible,
};
static struct iscsi_boot_kobj *
iscsi_boot_create_kobj(struct iscsi_boot_kset *boot_kset,
struct attribute_group *attr_group,
const char *name, int index, void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type))
{
struct iscsi_boot_kobj *boot_kobj;
boot_kobj = kzalloc(sizeof(*boot_kobj), GFP_KERNEL);
if (!boot_kobj)
return NULL;
INIT_LIST_HEAD(&boot_kobj->list);
boot_kobj->kobj.kset = boot_kset->kset;
if (kobject_init_and_add(&boot_kobj->kobj, &iscsi_boot_ktype,
NULL, name, index)) {
kfree(boot_kobj);
return NULL;
}
boot_kobj->data = data;
boot_kobj->show = show;
boot_kobj->is_visible = is_visible;
if (sysfs_create_group(&boot_kobj->kobj, attr_group)) {
/*
* We do not want to free this because the caller
* will assume that since the creation call failed
* the boot kobj was not setup and the normal release
* path is not being run.
*/
boot_kobj->data = NULL;
kobject_put(&boot_kobj->kobj);
return NULL;
}
boot_kobj->attr_group = attr_group;
kobject_uevent(&boot_kobj->kobj, KOBJ_ADD);
/* Nothing broke so lets add it to the list. */
list_add_tail(&boot_kobj->list, &boot_kset->kobj_list);
return boot_kobj;
}
static void iscsi_boot_remove_kobj(struct iscsi_boot_kobj *boot_kobj)
{
list_del(&boot_kobj->list);
sysfs_remove_group(&boot_kobj->kobj, boot_kobj->attr_group);
kobject_put(&boot_kobj->kobj);
}
/**
* iscsi_boot_create_target() - create boot target sysfs dir
* @boot_kset: boot kset
* @index: the target id
* @data: driver specific data for target
* @show: attr show function
* @is_visible: attr visibility function
*
* Note: The boot sysfs lib will free the data passed in for the caller
* when all refs to the target kobject have been released.
*/
struct iscsi_boot_kobj *
iscsi_boot_create_target(struct iscsi_boot_kset *boot_kset, int index,
void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type))
{
return iscsi_boot_create_kobj(boot_kset, &iscsi_boot_target_attr_group,
"target%d", index, data, show, is_visible);
}
EXPORT_SYMBOL_GPL(iscsi_boot_create_target);
/**
* iscsi_boot_create_initiator() - create boot initiator sysfs dir
* @boot_kset: boot kset
* @index: the initiator id
* @data: driver specific data
* @show: attr show function
* @is_visible: attr visibility function
*
* Note: The boot sysfs lib will free the data passed in for the caller
* when all refs to the initiator kobject have been released.
*/
struct iscsi_boot_kobj *
iscsi_boot_create_initiator(struct iscsi_boot_kset *boot_kset, int index,
void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type))
{
return iscsi_boot_create_kobj(boot_kset,
&iscsi_boot_initiator_attr_group,
"initiator", index, data, show,
is_visible);
}
EXPORT_SYMBOL_GPL(iscsi_boot_create_initiator);
/**
* iscsi_boot_create_ethernet() - create boot ethernet sysfs dir
* @boot_kset: boot kset
* @index: the ethernet device id
* @data: driver specific data
* @show: attr show function
* @is_visible: attr visibility function
*
* Note: The boot sysfs lib will free the data passed in for the caller
* when all refs to the ethernet kobject have been released.
*/
struct iscsi_boot_kobj *
iscsi_boot_create_ethernet(struct iscsi_boot_kset *boot_kset, int index,
void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type))
{
return iscsi_boot_create_kobj(boot_kset,
&iscsi_boot_ethernet_attr_group,
"ethernet%d", index, data, show,
is_visible);
}
EXPORT_SYMBOL_GPL(iscsi_boot_create_ethernet);
/**
* iscsi_boot_create_kset() - creates root sysfs tree
* @set_name: name of root dir
*/
struct iscsi_boot_kset *iscsi_boot_create_kset(const char *set_name)
{
struct iscsi_boot_kset *boot_kset;
boot_kset = kzalloc(sizeof(*boot_kset), GFP_KERNEL);
if (!boot_kset)
return NULL;
boot_kset->kset = kset_create_and_add(set_name, NULL, firmware_kobj);
if (!boot_kset->kset) {
kfree(boot_kset);
return NULL;
}
INIT_LIST_HEAD(&boot_kset->kobj_list);
return boot_kset;
}
EXPORT_SYMBOL_GPL(iscsi_boot_create_kset);
/**
* iscsi_boot_create_host_kset() - creates root sysfs tree for a scsi host
* @hostno: host number of scsi host
*/
struct iscsi_boot_kset *iscsi_boot_create_host_kset(unsigned int hostno)
{
struct iscsi_boot_kset *boot_kset;
char *set_name;
set_name = kasprintf(GFP_KERNEL, "iscsi_boot%u", hostno);
if (!set_name)
return NULL;
boot_kset = iscsi_boot_create_kset(set_name);
kfree(set_name);
return boot_kset;
}
EXPORT_SYMBOL_GPL(iscsi_boot_create_host_kset);
/**
* iscsi_boot_destroy_kset() - destroy kset and kobjects under it
* @boot_kset: boot kset
*
* This will remove the kset and kobjects and attrs under it.
*/
void iscsi_boot_destroy_kset(struct iscsi_boot_kset *boot_kset)
{
struct iscsi_boot_kobj *boot_kobj, *tmp_kobj;
list_for_each_entry_safe(boot_kobj, tmp_kobj,
&boot_kset->kobj_list, list)
iscsi_boot_remove_kobj(boot_kobj);
kset_unregister(boot_kset->kset);
}
EXPORT_SYMBOL_GPL(iscsi_boot_destroy_kset);

726
drivers/firmware/iscsi_ibft.c
View file

@ -1,5 +1,5 @@
/*
* Copyright 2007 Red Hat, Inc.
* Copyright 2007-2010 Red Hat, Inc.
* by Peter Jones <pjones@redhat.com>
* Copyright 2008 IBM, Inc.
* by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
@ -19,6 +19,9 @@
*
* Changelog:
*
* 06 Jan 2010 - Peter Jones <pjones@redhat.com>
* New changelog entries are in the git log from now on. Not here.
*
* 14 Mar 2008 - Konrad Rzeszutek <ketuzsezr@darnok.org>
* Updated comments and copyrights. (v0.4.9)
*
@ -78,9 +81,11 @@
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <linux/iscsi_boot_sysfs.h>
#define IBFT_ISCSI_VERSION "0.4.9"
#define IBFT_ISCSI_DATE "2008-Mar-14"
#define IBFT_ISCSI_VERSION "0.5.0"
#define IBFT_ISCSI_DATE "2010-Feb-25"
MODULE_AUTHOR("Peter Jones <pjones@redhat.com> and \
Konrad Rzeszutek <ketuzsezr@darnok.org>");
@ -165,109 +170,21 @@ enum ibft_id {
id_end_marker,
};
/*
* We do not support the other types, hence the usage of NULL.
* This maps to the enum ibft_id.
*/
static const char *ibft_id_names[] =
{NULL, NULL, "initiator", "ethernet%d", "target%d", NULL, NULL};
/*
* The text attributes names for each of the kobjects.
*/
enum ibft_eth_properties_enum {
ibft_eth_index,
ibft_eth_flags,
ibft_eth_ip_addr,
ibft_eth_subnet_mask,
ibft_eth_origin,
ibft_eth_gateway,
ibft_eth_primary_dns,
ibft_eth_secondary_dns,
ibft_eth_dhcp,
ibft_eth_vlan,
ibft_eth_mac,
/* ibft_eth_pci_bdf - this is replaced by link to the device itself. */
ibft_eth_hostname,
ibft_eth_end_marker,
};
static const char *ibft_eth_properties[] =
{"index", "flags", "ip-addr", "subnet-mask", "origin", "gateway",
"primary-dns", "secondary-dns", "dhcp", "vlan", "mac", "hostname",
NULL};
enum ibft_tgt_properties_enum {
ibft_tgt_index,
ibft_tgt_flags,
ibft_tgt_ip_addr,
ibft_tgt_port,
ibft_tgt_lun,
ibft_tgt_chap_type,
ibft_tgt_nic_assoc,
ibft_tgt_name,
ibft_tgt_chap_name,
ibft_tgt_chap_secret,
ibft_tgt_rev_chap_name,
ibft_tgt_rev_chap_secret,
ibft_tgt_end_marker,
};
static const char *ibft_tgt_properties[] =
{"index", "flags", "ip-addr", "port", "lun", "chap-type", "nic-assoc",
"target-name", "chap-name", "chap-secret", "rev-chap-name",
"rev-chap-name-secret", NULL};
enum ibft_initiator_properties_enum {
ibft_init_index,
ibft_init_flags,
ibft_init_isns_server,
ibft_init_slp_server,
ibft_init_pri_radius_server,
ibft_init_sec_radius_server,
ibft_init_initiator_name,
ibft_init_end_marker,
};
static const char *ibft_initiator_properties[] =
{"index", "flags", "isns-server", "slp-server", "pri-radius-server",
"sec-radius-server", "initiator-name", NULL};
/*
* The kobject and attribute structures.
*/
struct ibft_kobject {
struct ibft_table_header *header;
struct acpi_table_ibft *header;
union {
struct ibft_initiator *initiator;
struct ibft_nic *nic;
struct ibft_tgt *tgt;
struct ibft_hdr *hdr;
};
struct kobject kobj;
struct list_head node;
};
struct ibft_attribute {
struct attribute attr;
ssize_t (*show) (struct ibft_kobject *entry,
struct ibft_attribute *attr, char *buf);
union {
struct ibft_initiator *initiator;
struct ibft_nic *nic;
struct ibft_tgt *tgt;
struct ibft_hdr *hdr;
};
struct kobject *kobj;
int type; /* The enum of the type. This can be any value of:
ibft_eth_properties_enum, ibft_tgt_properties_enum,
or ibft_initiator_properties_enum. */
struct list_head node;
};
static LIST_HEAD(ibft_attr_list);
static LIST_HEAD(ibft_kobject_list);
static struct iscsi_boot_kset *boot_kset;
static const char nulls[16];
@ -306,35 +223,27 @@ static ssize_t sprintf_string(char *str, int len, char *buf)
static int ibft_verify_hdr(char *t, struct ibft_hdr *hdr, int id, int length)
{
if (hdr->id != id) {
printk(KERN_ERR "iBFT error: We expected the " \
printk(KERN_ERR "iBFT error: We expected the %s " \
"field header.id to have %d but " \
"found %d instead!\n", id, hdr->id);
"found %d instead!\n", t, id, hdr->id);
return -ENODEV;
}
if (hdr->length != length) {
printk(KERN_ERR "iBFT error: We expected the " \
printk(KERN_ERR "iBFT error: We expected the %s " \
"field header.length to have %d but " \
"found %d instead!\n", length, hdr->length);
"found %d instead!\n", t, length, hdr->length);
return -ENODEV;
}
return 0;
}
static void ibft_release(struct kobject *kobj)
{
struct ibft_kobject *ibft =
container_of(kobj, struct ibft_kobject, kobj);
kfree(ibft);
}
/*
* Routines for parsing the iBFT data to be human readable.
*/
static ssize_t ibft_attr_show_initiator(struct ibft_kobject *entry,
struct ibft_attribute *attr,
char *buf)
static ssize_t ibft_attr_show_initiator(void *data, int type, char *buf)
{
struct ibft_kobject *entry = data;
struct ibft_initiator *initiator = entry->initiator;
void *ibft_loc = entry->header;
char *str = buf;
@ -342,26 +251,26 @@ static ssize_t ibft_attr_show_initiator(struct ibft_kobject *entry,
if (!initiator)
return 0;
switch (attr->type) {
case ibft_init_index:
switch (type) {
case ISCSI_BOOT_INI_INDEX:
str += sprintf(str, "%d\n", initiator->hdr.index);
break;
case ibft_init_flags:
case ISCSI_BOOT_INI_FLAGS:
str += sprintf(str, "%d\n", initiator->hdr.flags);
break;
case ibft_init_isns_server:
case ISCSI_BOOT_INI_ISNS_SERVER:
str += sprintf_ipaddr(str, initiator->isns_server);
break;
case ibft_init_slp_server:
case ISCSI_BOOT_INI_SLP_SERVER:
str += sprintf_ipaddr(str, initiator->slp_server);
break;
case ibft_init_pri_radius_server:
case ISCSI_BOOT_INI_PRI_RADIUS_SERVER:
str += sprintf_ipaddr(str, initiator->pri_radius_server);
break;
case ibft_init_sec_radius_server:
case ISCSI_BOOT_INI_SEC_RADIUS_SERVER:
str += sprintf_ipaddr(str, initiator->sec_radius_server);
break;
case ibft_init_initiator_name:
case ISCSI_BOOT_INI_INITIATOR_NAME:
str += sprintf_string(str, initiator->initiator_name_len,
(char *)ibft_loc +
initiator->initiator_name_off);
@ -373,10 +282,9 @@ static ssize_t ibft_attr_show_initiator(struct ibft_kobject *entry,
return str - buf;
}
static ssize_t ibft_attr_show_nic(struct ibft_kobject *entry,
struct ibft_attribute *attr,
char *buf)
static ssize_t ibft_attr_show_nic(void *data, int type, char *buf)
{
struct ibft_kobject *entry = data;
struct ibft_nic *nic = entry->nic;
void *ibft_loc = entry->header;
char *str = buf;
@ -385,42 +293,42 @@ static ssize_t ibft_attr_show_nic(struct ibft_kobject *entry,
if (!nic)
return 0;
switch (attr->type) {
case ibft_eth_index:
switch (type) {
case ISCSI_BOOT_ETH_INDEX:
str += sprintf(str, "%d\n", nic->hdr.index);
break;
case ibft_eth_flags:
case ISCSI_BOOT_ETH_FLAGS:
str += sprintf(str, "%d\n", nic->hdr.flags);
break;
case ibft_eth_ip_addr:
case ISCSI_BOOT_ETH_IP_ADDR:
str += sprintf_ipaddr(str, nic->ip_addr);
break;
case ibft_eth_subnet_mask:
case ISCSI_BOOT_ETH_SUBNET_MASK:
val = cpu_to_be32(~((1 << (32-nic->subnet_mask_prefix))-1));
str += sprintf(str, "%pI4", &val);
break;
case ibft_eth_origin:
case ISCSI_BOOT_ETH_ORIGIN:
str += sprintf(str, "%d\n", nic->origin);
break;
case ibft_eth_gateway:
case ISCSI_BOOT_ETH_GATEWAY:
str += sprintf_ipaddr(str, nic->gateway);
break;
case ibft_eth_primary_dns:
case ISCSI_BOOT_ETH_PRIMARY_DNS:
str += sprintf_ipaddr(str, nic->primary_dns);
break;
case ibft_eth_secondary_dns:
case ISCSI_BOOT_ETH_SECONDARY_DNS:
str += sprintf_ipaddr(str, nic->secondary_dns);
break;
case ibft_eth_dhcp:
case ISCSI_BOOT_ETH_DHCP:
str += sprintf_ipaddr(str, nic->dhcp);
break;
case ibft_eth_vlan:
case ISCSI_BOOT_ETH_VLAN:
str += sprintf(str, "%d\n", nic->vlan);
break;
case ibft_eth_mac:
case ISCSI_BOOT_ETH_MAC:
str += sprintf(str, "%pM\n", nic->mac);
break;
case ibft_eth_hostname:
case ISCSI_BOOT_ETH_HOSTNAME:
str += sprintf_string(str, nic->hostname_len,
(char *)ibft_loc + nic->hostname_off);
break;
@ -431,10 +339,9 @@ static ssize_t ibft_attr_show_nic(struct ibft_kobject *entry,
return str - buf;
};
static ssize_t ibft_attr_show_target(struct ibft_kobject *entry,
struct ibft_attribute *attr,
char *buf)
static ssize_t ibft_attr_show_target(void *data, int type, char *buf)
{
struct ibft_kobject *entry = data;
struct ibft_tgt *tgt = entry->tgt;
void *ibft_loc = entry->header;
char *str = buf;
@ -443,48 +350,48 @@ static ssize_t ibft_attr_show_target(struct ibft_kobject *entry,
if (!tgt)
return 0;
switch (attr->type) {
case ibft_tgt_index:
switch (type) {
case ISCSI_BOOT_TGT_INDEX:
str += sprintf(str, "%d\n", tgt->hdr.index);
break;
case ibft_tgt_flags:
case ISCSI_BOOT_TGT_FLAGS:
str += sprintf(str, "%d\n", tgt->hdr.flags);
break;
case ibft_tgt_ip_addr:
case ISCSI_BOOT_TGT_IP_ADDR:
str += sprintf_ipaddr(str, tgt->ip_addr);
break;
case ibft_tgt_port:
case ISCSI_BOOT_TGT_PORT:
str += sprintf(str, "%d\n", tgt->port);
break;
case ibft_tgt_lun:
case ISCSI_BOOT_TGT_LUN:
for (i = 0; i < 8; i++)
str += sprintf(str, "%x", (u8)tgt->lun[i]);
str += sprintf(str, "\n");
break;
case ibft_tgt_nic_assoc:
case ISCSI_BOOT_TGT_NIC_ASSOC:
str += sprintf(str, "%d\n", tgt->nic_assoc);
break;
case ibft_tgt_chap_type:
case ISCSI_BOOT_TGT_CHAP_TYPE:
str += sprintf(str, "%d\n", tgt->chap_type);
break;
case ibft_tgt_name:
case ISCSI_BOOT_TGT_NAME:
str += sprintf_string(str, tgt->tgt_name_len,
(char *)ibft_loc + tgt->tgt_name_off);
break;
case ibft_tgt_chap_name:
case ISCSI_BOOT_TGT_CHAP_NAME:
str += sprintf_string(str, tgt->chap_name_len,
(char *)ibft_loc + tgt->chap_name_off);
break;
case ibft_tgt_chap_secret:
case ISCSI_BOOT_TGT_CHAP_SECRET:
str += sprintf_string(str, tgt->chap_secret_len,
(char *)ibft_loc + tgt->chap_secret_off);
break;
case ibft_tgt_rev_chap_name:
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
str += sprintf_string(str, tgt->rev_chap_name_len,
(char *)ibft_loc +
tgt->rev_chap_name_off);
break;
case ibft_tgt_rev_chap_secret:
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
str += sprintf_string(str, tgt->rev_chap_secret_len,
(char *)ibft_loc +
tgt->rev_chap_secret_off);
@ -496,52 +403,19 @@ static ssize_t ibft_attr_show_target(struct ibft_kobject *entry,
return str - buf;
}
/*
* The routine called for all sysfs attributes.
*/
static ssize_t ibft_show_attribute(struct kobject *kobj,
struct attribute *attr,
char *buf)
{
struct ibft_kobject *dev =
container_of(kobj, struct ibft_kobject, kobj);
struct ibft_attribute *ibft_attr =
container_of(attr, struct ibft_attribute, attr);
ssize_t ret = -EIO;
char *str = buf;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (ibft_attr->show)
ret = ibft_attr->show(dev, ibft_attr, str);
return ret;
}
static const struct sysfs_ops ibft_attr_ops = {
.show = ibft_show_attribute,
};
static struct kobj_type ibft_ktype = {
.release = ibft_release,
.sysfs_ops = &ibft_attr_ops,
};
static struct kset *ibft_kset;
static int __init ibft_check_device(void)
{
int len;
u8 *pos;
u8 csum = 0;
len = ibft_addr->length;
len = ibft_addr->header.length;
/* Sanity checking of iBFT. */
if (ibft_addr->revision != 1) {
if (ibft_addr->header.revision != 1) {
printk(KERN_ERR "iBFT module supports only revision 1, " \
"while this is %d.\n", ibft_addr->revision);
"while this is %d.\n",
ibft_addr->header.revision);
return -ENOENT;
}
for (pos = (u8 *)ibft_addr; pos < (u8 *)ibft_addr + len; pos++)
@ -555,13 +429,150 @@ static int __init ibft_check_device(void)
return 0;
}
/*
* Helper routiners to check to determine if the entry is valid
* in the proper iBFT structure.
*/
static mode_t ibft_check_nic_for(void *data, int type)
{
struct ibft_kobject *entry = data;
struct ibft_nic *nic = entry->nic;
mode_t rc = 0;
switch (type) {
case ISCSI_BOOT_ETH_INDEX:
case ISCSI_BOOT_ETH_FLAGS:
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_IP_ADDR:
if (memcmp(nic->ip_addr, nulls, sizeof(nic->ip_addr)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_SUBNET_MASK:
if (nic->subnet_mask_prefix)
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_ORIGIN:
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_GATEWAY:
if (memcmp(nic->gateway, nulls, sizeof(nic->gateway)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_PRIMARY_DNS:
if (memcmp(nic->primary_dns, nulls,
sizeof(nic->primary_dns)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_SECONDARY_DNS:
if (memcmp(nic->secondary_dns, nulls,
sizeof(nic->secondary_dns)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_DHCP:
if (memcmp(nic->dhcp, nulls, sizeof(nic->dhcp)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_VLAN:
case ISCSI_BOOT_ETH_MAC:
rc = S_IRUGO;
break;
case ISCSI_BOOT_ETH_HOSTNAME:
if (nic->hostname_off)
rc = S_IRUGO;
break;
default:
break;
}
return rc;
}
static mode_t __init ibft_check_tgt_for(void *data, int type)
{
struct ibft_kobject *entry = data;
struct ibft_tgt *tgt = entry->tgt;
mode_t rc = 0;
switch (type) {
case ISCSI_BOOT_TGT_INDEX:
case ISCSI_BOOT_TGT_FLAGS:
case ISCSI_BOOT_TGT_IP_ADDR:
case ISCSI_BOOT_TGT_PORT:
case ISCSI_BOOT_TGT_LUN:
case ISCSI_BOOT_TGT_NIC_ASSOC:
case ISCSI_BOOT_TGT_CHAP_TYPE:
rc = S_IRUGO;
case ISCSI_BOOT_TGT_NAME:
if (tgt->tgt_name_len)
rc = S_IRUGO;
break;
case ISCSI_BOOT_TGT_CHAP_NAME:
case ISCSI_BOOT_TGT_CHAP_SECRET:
if (tgt->chap_name_len)
rc = S_IRUGO;
break;
case ISCSI_BOOT_TGT_REV_CHAP_NAME:
case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
if (tgt->rev_chap_name_len)
rc = S_IRUGO;
break;
default:
break;
}
return rc;
}
static mode_t __init ibft_check_initiator_for(void *data, int type)
{
struct ibft_kobject *entry = data;
struct ibft_initiator *init = entry->initiator;
mode_t rc = 0;
switch (type) {
case ISCSI_BOOT_INI_INDEX:
case ISCSI_BOOT_INI_FLAGS:
rc = S_IRUGO;
break;
case ISCSI_BOOT_INI_ISNS_SERVER:
if (memcmp(init->isns_server, nulls,
sizeof(init->isns_server)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_INI_SLP_SERVER:
if (memcmp(init->slp_server, nulls,
sizeof(init->slp_server)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_INI_PRI_RADIUS_SERVER:
if (memcmp(init->pri_radius_server, nulls,
sizeof(init->pri_radius_server)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_INI_SEC_RADIUS_SERVER:
if (memcmp(init->sec_radius_server, nulls,
sizeof(init->sec_radius_server)))
rc = S_IRUGO;
break;
case ISCSI_BOOT_INI_INITIATOR_NAME:
if (init->initiator_name_len)
rc = S_IRUGO;
break;
default:
break;
}
return rc;
}
/*
* Helper function for ibft_register_kobjects.
*/
static int __init ibft_create_kobject(struct ibft_table_header *header,
struct ibft_hdr *hdr,
struct list_head *list)
static int __init ibft_create_kobject(struct acpi_table_ibft *header,
struct ibft_hdr *hdr)
{
struct iscsi_boot_kobj *boot_kobj = NULL;
struct ibft_kobject *ibft_kobj = NULL;
struct ibft_nic *nic = (struct ibft_nic *)hdr;
struct pci_dev *pci_dev;
@ -578,14 +589,47 @@ static int __init ibft_create_kobject(struct ibft_table_header *header,
case id_initiator:
rc = ibft_verify_hdr("initiator", hdr, id_initiator,
sizeof(*ibft_kobj->initiator));
if (rc)
break;
boot_kobj = iscsi_boot_create_initiator(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_initiator,
ibft_check_initiator_for);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_nic:
rc = ibft_verify_hdr("ethernet", hdr, id_nic,
sizeof(*ibft_kobj->nic));
if (rc)
break;
boot_kobj = iscsi_boot_create_ethernet(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_nic,
ibft_check_nic_for);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_target:
rc = ibft_verify_hdr("target", hdr, id_target,
sizeof(*ibft_kobj->tgt));
if (rc)
break;
boot_kobj = iscsi_boot_create_target(boot_kset, hdr->index,
ibft_kobj,
ibft_attr_show_target,
ibft_check_tgt_for);
if (!boot_kobj) {
rc = -ENOMEM;
goto free_ibft_obj;
}
break;
case id_reserved:
case id_control:
@ -596,29 +640,17 @@ static int __init ibft_create_kobject(struct ibft_table_header *header,
default:
printk(KERN_ERR "iBFT has unknown structure type (%d). " \
"Report this bug to %.6s!\n", hdr->id,
header->oem_id);
header->header.oem_id);
rc = 1;
break;
}
if (rc) {
/* Skip adding this kobject, but exit with non-fatal error. */
kfree(ibft_kobj);
goto out_invalid_struct;
rc = 0;
goto free_ibft_obj;
}
ibft_kobj->kobj.kset = ibft_kset;
rc = kobject_init_and_add(&ibft_kobj->kobj, &ibft_ktype,
NULL, ibft_id_names[hdr->id], hdr->index);
if (rc) {
kfree(ibft_kobj);
goto out;
}
kobject_uevent(&ibft_kobj->kobj, KOBJ_ADD);
if (hdr->id == id_nic) {
/*
* We don't search for the device in other domains than
@ -629,19 +661,16 @@ static int __init ibft_create_kobject(struct ibft_table_header *header,
pci_dev = pci_get_bus_and_slot((nic->pci_bdf & 0xff00) >> 8,
(nic->pci_bdf & 0xff));
if (pci_dev) {
rc = sysfs_create_link(&ibft_kobj->kobj,
rc = sysfs_create_link(&boot_kobj->kobj,
&pci_dev->dev.kobj, "device");
pci_dev_put(pci_dev);
}
}
/* Nothing broke so lets add it to the list. */
list_add_tail(&ibft_kobj->node, list);
out:
return rc;
out_invalid_struct:
/* Unsupported structs are skipped. */
return 0;
free_ibft_obj:
kfree(ibft_kobj);
return rc;
}
/*
@ -649,8 +678,7 @@ static int __init ibft_create_kobject(struct ibft_table_header *header,
* found add them on the passed-in list. We do not support the other
* fields at this point, so they are skipped.
*/
static int __init ibft_register_kobjects(struct ibft_table_header *header,
struct list_head *list)
static int __init ibft_register_kobjects(struct acpi_table_ibft *header)
{
struct ibft_control *control = NULL;
void *ptr, *end;
@ -660,7 +688,7 @@ static int __init ibft_register_kobjects(struct ibft_table_header *header,
control = (void *)header + sizeof(*header);
end = (void *)control + control->hdr.length;
eot_offset = (void *)header + header->length - (void *)control;
eot_offset = (void *)header + header->header.length - (void *)control;
rc = ibft_verify_hdr("control", (struct ibft_hdr *)control, id_control,
sizeof(*control));
@ -672,10 +700,10 @@ static int __init ibft_register_kobjects(struct ibft_table_header *header,
}
for (ptr = &control->initiator_off; ptr < end; ptr += sizeof(u16)) {
offset = *(u16 *)ptr;
if (offset && offset < header->length && offset < eot_offset) {
if (offset && offset < header->header.length &&
offset < eot_offset) {
rc = ibft_create_kobject(header,
(void *)header + offset,
list);
(void *)header + offset);
if (rc)
break;
}
@ -684,240 +712,28 @@ static int __init ibft_register_kobjects(struct ibft_table_header *header,
return rc;
}
static void ibft_unregister(struct list_head *attr_list,
struct list_head *kobj_list)
static void ibft_unregister(void)
{
struct ibft_kobject *data = NULL, *n;
struct ibft_attribute *attr = NULL, *m;
struct iscsi_boot_kobj *boot_kobj, *tmp_kobj;
struct ibft_kobject *ibft_kobj;
list_for_each_entry_safe(attr, m, attr_list, node) {
sysfs_remove_file(attr->kobj, &attr->attr);
list_del(&attr->node);
kfree(attr);
list_for_each_entry_safe(boot_kobj, tmp_kobj,
&boot_kset->kobj_list, list) {
ibft_kobj = boot_kobj->data;
if (ibft_kobj->hdr->id == id_nic)
sysfs_remove_link(&boot_kobj->kobj, "device");
};
list_del_init(attr_list);
list_for_each_entry_safe(data, n, kobj_list, node) {
list_del(&data->node);
if (data->hdr->id == id_nic)
sysfs_remove_link(&data->kobj, "device");
kobject_put(&data->kobj);
};
list_del_init(kobj_list);
}
static int __init ibft_create_attribute(struct ibft_kobject *kobj_data,
int type,
const char *name,
ssize_t (*show)(struct ibft_kobject *,
struct ibft_attribute*,
char *buf),
struct list_head *list)
static void ibft_cleanup(void)
{
struct ibft_attribute *attr = NULL;
struct ibft_hdr *hdr = kobj_data->hdr;
attr = kmalloc(sizeof(*attr), GFP_KERNEL);
if (!attr)
return -ENOMEM;
attr->attr.name = name;
attr->attr.mode = S_IRUSR;
attr->hdr = hdr;
attr->show = show;
attr->kobj = &kobj_data->kobj;
attr->type = type;
list_add_tail(&attr->node, list);
return 0;
ibft_unregister();
iscsi_boot_destroy_kset(boot_kset);
}
/*
* Helper routiners to check to determine if the entry is valid
* in the proper iBFT structure.
*/
static int __init ibft_check_nic_for(struct ibft_nic *nic, int entry)
static void __exit ibft_exit(void)
{
int rc = 0;
switch (entry) {
case ibft_eth_index:
case ibft_eth_flags:
rc = 1;
break;
case ibft_eth_ip_addr:
if (memcmp(nic->ip_addr, nulls, sizeof(nic->ip_addr)))
rc = 1;
break;
case ibft_eth_subnet_mask:
if (nic->subnet_mask_prefix)
rc = 1;
break;
case ibft_eth_origin:
rc = 1;
break;
case ibft_eth_gateway:
if (memcmp(nic->gateway, nulls, sizeof(nic->gateway)))
rc = 1;
break;
case ibft_eth_primary_dns:
if (memcmp(nic->primary_dns, nulls,
sizeof(nic->primary_dns)))
rc = 1;
break;
case ibft_eth_secondary_dns:
if (memcmp(nic->secondary_dns, nulls,
sizeof(nic->secondary_dns)))
rc = 1;
break;
case ibft_eth_dhcp:
if (memcmp(nic->dhcp, nulls, sizeof(nic->dhcp)))
rc = 1;
break;
case ibft_eth_vlan:
case ibft_eth_mac:
rc = 1;
break;
case ibft_eth_hostname:
if (nic->hostname_off)
rc = 1;
break;
default:
break;
}
return rc;
}
static int __init ibft_check_tgt_for(struct ibft_tgt *tgt, int entry)
{
int rc = 0;
switch (entry) {
case ibft_tgt_index:
case ibft_tgt_flags:
case ibft_tgt_ip_addr:
case ibft_tgt_port:
case ibft_tgt_lun:
case ibft_tgt_nic_assoc:
case ibft_tgt_chap_type:
rc = 1;
case ibft_tgt_name:
if (tgt->tgt_name_len)
rc = 1;
break;
case ibft_tgt_chap_name:
case ibft_tgt_chap_secret:
if (tgt->chap_name_len)
rc = 1;
break;
case ibft_tgt_rev_chap_name:
case ibft_tgt_rev_chap_secret:
if (tgt->rev_chap_name_len)
rc = 1;
break;
default:
break;
}
return rc;
}
static int __init ibft_check_initiator_for(struct ibft_initiator *init,
int entry)
{
int rc = 0;
switch (entry) {
case ibft_init_index:
case ibft_init_flags:
rc = 1;
break;
case ibft_init_isns_server:
if (memcmp(init->isns_server, nulls,
sizeof(init->isns_server)))
rc = 1;
break;
case ibft_init_slp_server:
if (memcmp(init->slp_server, nulls,
sizeof(init->slp_server)))
rc = 1;
break;
case ibft_init_pri_radius_server:
if (memcmp(init->pri_radius_server, nulls,
sizeof(init->pri_radius_server)))
rc = 1;
break;
case ibft_init_sec_radius_server:
if (memcmp(init->sec_radius_server, nulls,
sizeof(init->sec_radius_server)))
rc = 1;
break;
case ibft_init_initiator_name:
if (init->initiator_name_len)
rc = 1;
break;
default:
break;
}
return rc;
}
/*
* Register the attributes for all of the kobjects.
*/
static int __init ibft_register_attributes(struct list_head *kobject_list,
struct list_head *attr_list)
{
int rc = 0, i = 0;
struct ibft_kobject *data = NULL;
struct ibft_attribute *attr = NULL, *m;
list_for_each_entry(data, kobject_list, node) {
switch (data->hdr->id) {
case id_nic:
for (i = 0; i < ibft_eth_end_marker && !rc; i++)
if (ibft_check_nic_for(data->nic, i))
rc = ibft_create_attribute(data, i,
ibft_eth_properties[i],
ibft_attr_show_nic, attr_list);
break;
case id_target:
for (i = 0; i < ibft_tgt_end_marker && !rc; i++)
if (ibft_check_tgt_for(data->tgt, i))
rc = ibft_create_attribute(data, i,
ibft_tgt_properties[i],
ibft_attr_show_target,
attr_list);
break;
case id_initiator:
for (i = 0; i < ibft_init_end_marker && !rc; i++)
if (ibft_check_initiator_for(
data->initiator, i))
rc = ibft_create_attribute(data, i,
ibft_initiator_properties[i],
ibft_attr_show_initiator,
attr_list);
break;
default:
break;
}
if (rc)
break;
}
list_for_each_entry_safe(attr, m, attr_list, node) {
rc = sysfs_create_file(attr->kobj, &attr->attr);
if (rc) {
list_del(&attr->node);
kfree(attr);
break;
}
}
return rc;
ibft_cleanup();
}
/*
@ -927,26 +743,20 @@ static int __init ibft_init(void)
{
int rc = 0;
ibft_kset = kset_create_and_add("ibft", NULL, firmware_kobj);
if (!ibft_kset)
return -ENOMEM;
if (ibft_addr) {
printk(KERN_INFO "iBFT detected at 0x%llx.\n",
(u64)isa_virt_to_bus(ibft_addr));
rc = ibft_check_device();
if (rc)
goto out_firmware_unregister;
return rc;
boot_kset = iscsi_boot_create_kset("ibft");
if (!boot_kset)
return -ENOMEM;
/* Scan the IBFT for data and register the kobjects. */
rc = ibft_register_kobjects(ibft_addr, &ibft_kobject_list);
if (rc)
goto out_free;
/* Register the attributes */
rc = ibft_register_attributes(&ibft_kobject_list,
&ibft_attr_list);
rc = ibft_register_kobjects(ibft_addr);
if (rc)
goto out_free;
} else
@ -955,17 +765,9 @@ static int __init ibft_init(void)
return 0;
out_free:
ibft_unregister(&ibft_attr_list, &ibft_kobject_list);
out_firmware_unregister:
kset_unregister(ibft_kset);
ibft_cleanup();
return rc;
}
static void __exit ibft_exit(void)
{
ibft_unregister(&ibft_attr_list, &ibft_kobject_list);
kset_unregister(ibft_kset);
}
module_init(ibft_init);
module_exit(ibft_exit);

56
drivers/firmware/iscsi_ibft_find.c
View file

@ -1,5 +1,5 @@
/*
* Copyright 2007 Red Hat, Inc.
* Copyright 2007-2010 Red Hat, Inc.
* by Peter Jones <pjones@redhat.com>
* Copyright 2007 IBM, Inc.
* by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
@ -22,6 +22,7 @@
#include <linux/blkdev.h>
#include <linux/ctype.h>
#include <linux/device.h>
#include <linux/efi.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/limits.h>
@ -30,13 +31,15 @@
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <linux/iscsi_ibft.h>
#include <asm/mmzone.h>
/*
* Physical location of iSCSI Boot Format Table.
*/
struct ibft_table_header *ibft_addr;
struct acpi_table_ibft *ibft_addr;
EXPORT_SYMBOL_GPL(ibft_addr);
#define IBFT_SIGN "iBFT"
@ -46,19 +49,20 @@ EXPORT_SYMBOL_GPL(ibft_addr);
#define VGA_MEM 0xA0000 /* VGA buffer */
#define VGA_SIZE 0x20000 /* 128kB */
#ifdef CONFIG_ACPI
static int __init acpi_find_ibft(struct acpi_table_header *header)
{
ibft_addr = (struct acpi_table_ibft *)header;
return 0;
}
#endif /* CONFIG_ACPI */
/*
* Routine used to find the iSCSI Boot Format Table. The logical
* kernel address is set in the ibft_addr global variable.
*/
unsigned long __init find_ibft_region(unsigned long *sizep)
static int __init find_ibft_in_mem(void)
{
unsigned long pos;
unsigned int len = 0;
void *virt;
ibft_addr = NULL;
for (pos = IBFT_START; pos < IBFT_END; pos += 16) {
/* The table can't be inside the VGA BIOS reserved space,
* so skip that area */
@ -72,14 +76,42 @@ unsigned long __init find_ibft_region(unsigned long *sizep)
/* if the length of the table extends past 1M,
* the table cannot be valid. */
if (pos + len <= (IBFT_END-1)) {
ibft_addr = (struct ibft_table_header *)virt;
ibft_addr = (struct acpi_table_ibft *)virt;
break;
}
}
}
return len;
}
/*
* Routine used to find the iSCSI Boot Format Table. The logical
* kernel address is set in the ibft_addr global variable.
*/
unsigned long __init find_ibft_region(unsigned long *sizep)
{
ibft_addr = NULL;
#ifdef CONFIG_ACPI
/*
* One spec says "IBFT", the other says "iBFT". We have to check
* for both.
*/
if (!ibft_addr)
acpi_table_parse(ACPI_SIG_IBFT, acpi_find_ibft);
if (!ibft_addr)
acpi_table_parse(IBFT_SIGN, acpi_find_ibft);
#endif /* CONFIG_ACPI */
/* iBFT 1.03 section 1.4.3.1 mandates that UEFI machines will
* only use ACPI for this */
if (!ibft_addr && !efi_enabled)
find_ibft_in_mem();
if (ibft_addr) {
*sizep = PAGE_ALIGN(len);
return pos;
*sizep = PAGE_ALIGN(ibft_addr->header.length);
return (u64)isa_virt_to_bus(ibft_addr);
}
*sizep = 0;

123
include/linux/iscsi_boot_sysfs.h Normal file
View file

@ -0,0 +1,123 @@
/*
* Export the iSCSI boot info to userland via sysfs.
*
* Copyright (C) 2010 Red Hat, Inc. All rights reserved.
* Copyright (C) 2010 Mike Christie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2.0 as published by
* the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef _ISCSI_BOOT_SYSFS_
#define _ISCSI_BOOT_SYSFS_
/*
* The text attributes names for each of the kobjects.
*/
enum iscsi_boot_eth_properties_enum {
ISCSI_BOOT_ETH_INDEX,
ISCSI_BOOT_ETH_FLAGS,
ISCSI_BOOT_ETH_IP_ADDR,
ISCSI_BOOT_ETH_SUBNET_MASK,
ISCSI_BOOT_ETH_ORIGIN,
ISCSI_BOOT_ETH_GATEWAY,
ISCSI_BOOT_ETH_PRIMARY_DNS,
ISCSI_BOOT_ETH_SECONDARY_DNS,
ISCSI_BOOT_ETH_DHCP,
ISCSI_BOOT_ETH_VLAN,
ISCSI_BOOT_ETH_MAC,
/* eth_pci_bdf - this is replaced by link to the device itself. */
ISCSI_BOOT_ETH_HOSTNAME,
ISCSI_BOOT_ETH_END_MARKER,
};
enum iscsi_boot_tgt_properties_enum {
ISCSI_BOOT_TGT_INDEX,
ISCSI_BOOT_TGT_FLAGS,
ISCSI_BOOT_TGT_IP_ADDR,
ISCSI_BOOT_TGT_PORT,
ISCSI_BOOT_TGT_LUN,
ISCSI_BOOT_TGT_CHAP_TYPE,
ISCSI_BOOT_TGT_NIC_ASSOC,
ISCSI_BOOT_TGT_NAME,
ISCSI_BOOT_TGT_CHAP_NAME,
ISCSI_BOOT_TGT_CHAP_SECRET,
ISCSI_BOOT_TGT_REV_CHAP_NAME,
ISCSI_BOOT_TGT_REV_CHAP_SECRET,
ISCSI_BOOT_TGT_END_MARKER,
};
enum iscsi_boot_initiator_properties_enum {
ISCSI_BOOT_INI_INDEX,
ISCSI_BOOT_INI_FLAGS,
ISCSI_BOOT_INI_ISNS_SERVER,
ISCSI_BOOT_INI_SLP_SERVER,
ISCSI_BOOT_INI_PRI_RADIUS_SERVER,
ISCSI_BOOT_INI_SEC_RADIUS_SERVER,
ISCSI_BOOT_INI_INITIATOR_NAME,
ISCSI_BOOT_INI_END_MARKER,
};
struct attribute_group;
struct iscsi_boot_kobj {
struct kobject kobj;
struct attribute_group *attr_group;
struct list_head list;
/*
* Pointer to store driver specific info. If set this will
* be freed for the LLD when the kobj release function is called.
*/
void *data;
/*
* Driver specific show function.
*
* The enum of the type. This can be any value of the above
* properties.
*/
ssize_t (*show) (void *data, int type, char *buf);
/*
* Drivers specific visibility function.
* The function should return if they the attr should be readable
* writable or should not be shown.
*
* The enum of the type. This can be any value of the above
* properties.
*/
mode_t (*is_visible) (void *data, int type);
};
struct iscsi_boot_kset {
struct list_head kobj_list;
struct kset *kset;
};
struct iscsi_boot_kobj *
iscsi_boot_create_initiator(struct iscsi_boot_kset *boot_kset, int index,
void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type));
struct iscsi_boot_kobj *
iscsi_boot_create_ethernet(struct iscsi_boot_kset *boot_kset, int index,
void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type));
struct iscsi_boot_kobj *
iscsi_boot_create_target(struct iscsi_boot_kset *boot_kset, int index,
void *data,
ssize_t (*show) (void *data, int type, char *buf),
mode_t (*is_visible) (void *data, int type));
struct iscsi_boot_kset *iscsi_boot_create_kset(const char *set_name);
struct iscsi_boot_kset *iscsi_boot_create_host_kset(unsigned int hostno);
void iscsi_boot_destroy_kset(struct iscsi_boot_kset *boot_kset);
#endif

12
include/linux/iscsi_ibft.h
View file

@ -21,21 +21,13 @@
#ifndef ISCSI_IBFT_H
#define ISCSI_IBFT_H
struct ibft_table_header {
char signature[4];
u32 length;
u8 revision;
u8 checksum;
char oem_id[6];
char oem_table_id[8];
char reserved[24];
} __attribute__((__packed__));
#include <acpi/acpi.h>
/*
* Logical location of iSCSI Boot Format Table.
* If the value is NULL there is no iBFT on the machine.
*/
extern struct ibft_table_header *ibft_addr;
extern struct acpi_table_ibft *ibft_addr;
/*
* Routine used to find and reserve the iSCSI Boot Format Table. The