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
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
--- /dev/null
+/*
+ * 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);
/*
- * 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>
*
* 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)
*
#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>");
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];
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;
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);
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;
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;
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;
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);
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++)
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;
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:
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
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);
}
}
+ return 0;
- /* Nothing broke so lets add it to the list. */
- list_add_tail(&ibft_kobj->node, list);
-out:
+free_ibft_obj:
+ kfree(ibft_kobj);
return rc;
-out_invalid_struct:
- /* Unsupported structs are skipped. */
- return 0;
}
/*
* 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;
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));
}
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;
}
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;
-
- list_for_each_entry_safe(attr, m, attr_list, node) {
- sysfs_remove_file(attr->kobj, &attr->attr);
- list_del(&attr->node);
- kfree(attr);
+ struct iscsi_boot_kobj *boot_kobj, *tmp_kobj;
+ struct ibft_kobject *ibft_kobj;
+
+ 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;
-}
-
-/*
- * 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)
-{
- 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;
+ ibft_unregister();
+ iscsi_boot_destroy_kset(boot_kset);
}
-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)
+static void __exit ibft_exit(void)
{
- 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();
}
/*
{
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;
- /* Scan the IBFT for data and register the kobjects. */
- rc = ibft_register_kobjects(ibft_addr, &ibft_kobject_list);
- if (rc)
- goto out_free;
+ boot_kset = iscsi_boot_create_kset("ibft");
+ if (!boot_kset)
+ return -ENOMEM;
- /* Register the attributes */
- rc = ibft_register_attributes(&ibft_kobject_list,
- &ibft_attr_list);
+ /* Scan the IBFT for data and register the kobjects. */
+ rc = ibft_register_kobjects(ibft_addr);
if (rc)
goto out_free;
} else
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);
/*
- * 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>
#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>
#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"
#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 */
/* 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;
--- /dev/null
+/*
+ * 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
#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
projects / karo-tx-linux.git / commitdiff