diff options
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/firmware/Makefile | 1 | ||||
| -rw-r--r-- | drivers/firmware/iscsi_boot_sysfs.c | 481 | ||||
| -rw-r--r-- | drivers/firmware/iscsi_ibft.c | 726 | ||||
| -rw-r--r-- | drivers/firmware/iscsi_ibft_find.c | 56 |
5 files changed, 799 insertions, 474 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 1b03ba1d083..a6c670b8ce5 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -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 diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile index 1c3c17343db..5fe7e166292 100644 --- a/drivers/firmware/Makefile +++ b/drivers/firmware/Makefile @@ -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 diff --git a/drivers/firmware/iscsi_boot_sysfs.c b/drivers/firmware/iscsi_boot_sysfs.c new file mode 100644 index 00000000000..df6bff7366c --- /dev/null +++ b/drivers/firmware/iscsi_boot_sysfs.c @@ -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); diff --git a/drivers/firmware/iscsi_ibft.c b/drivers/firmware/iscsi_ibft.c index ed2801c378d..4f04ec0410a 100644 --- a/drivers/firmware/iscsi_ibft.c +++ b/drivers/firmware/iscsi_ibft.c @@ -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>"); @@ -166,108 +171,20 @@ enum ibft_id { }; /* - * 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++) @@ -556,12 +430,149 @@ static int __init ibft_check_device(void) } /* + * 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); } } + 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; } /* @@ -649,8 +678,7 @@ out_invalid_struct: * 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; - - 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(); } /* @@ -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; - /* 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 @@ -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); diff --git a/drivers/firmware/iscsi_ibft_find.c b/drivers/firmware/iscsi_ibft_find.c index d6470ef36e4..2192456dfd6 100644 --- a/drivers/firmware/iscsi_ibft_find.c +++ b/drivers/firmware/iscsi_ibft_find.c @@ -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; |