linux/drivers/firmware
Konrad Rzeszutek 138fe4e069 Firmware: add iSCSI iBFT Support
Add /sysfs/firmware/ibft/[initiator|targetX|ethernetX] directories along with
text properties which export the the iSCSI Boot Firmware Table (iBFT)
structure.

What is iSCSI Boot Firmware Table?  It is a mechanism for the iSCSI tools to
extract from the machine NICs the iSCSI connection information so that they
can automagically mount the iSCSI share/target.  Currently the iSCSI
information is hard-coded in the initrd.  The /sysfs entries are read-only
one-name-and-value fields.

The usual set of data exposed is:

# for a in `find /sys/firmware/ibft/ -type f -print`; do  echo -n "$a: ";  cat $a; done
/sys/firmware/ibft/target0/target-name: iqn.2007.com.intel-sbx44:storage-10gb
/sys/firmware/ibft/target0/nic-assoc: 0
/sys/firmware/ibft/target0/chap-type: 0
/sys/firmware/ibft/target0/lun: 00000000
/sys/firmware/ibft/target0/port: 3260
/sys/firmware/ibft/target0/ip-addr: 192.168.79.116
/sys/firmware/ibft/target0/flags: 3
/sys/firmware/ibft/target0/index: 0
/sys/firmware/ibft/ethernet0/mac: 00:11:25:9d:8b:01
/sys/firmware/ibft/ethernet0/vlan: 0
/sys/firmware/ibft/ethernet0/gateway: 192.168.79.254
/sys/firmware/ibft/ethernet0/origin: 0
/sys/firmware/ibft/ethernet0/subnet-mask: 255.255.252.0
/sys/firmware/ibft/ethernet0/ip-addr: 192.168.77.41
/sys/firmware/ibft/ethernet0/flags: 7
/sys/firmware/ibft/ethernet0/index: 0
/sys/firmware/ibft/initiator/initiator-name: iqn.2007-07.com:konrad.initiator
/sys/firmware/ibft/initiator/flags: 3
/sys/firmware/ibft/initiator/index: 0

For full details of the IBFT structure please take a look at:
ftp://ftp.software.ibm.com/systems/support/system_x_pdf/ibm_iscsi_boot_firmware_table_v1.02.pdf

[akpm@linux-foundation.org: fix build]
Signed-off-by: Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Peter Jones <pjones@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-19 19:10:28 -07:00
..
dcdbas.c dcdbas: add DMI-based module autloading 2008-02-06 10:41:01 -08:00
dcdbas.h define global BIT macro 2007-10-19 11:53:42 -07:00
dell_rbu.c sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes 2007-07-11 16:09:09 -07:00
dmi_scan.c ipmi: change device node ordering to reflect probe order 2008-04-04 14:46:26 -07:00
dmi-id.c Remove inclusions of <linux/autoconf.h> 2008-02-06 10:41:00 -08:00
edd.c drivers/firmware/: Spelling fixes 2008-02-03 17:13:40 +02:00
efivars.c Kobject: convert drivers/* from kobject_unregister() to kobject_put() 2008-01-24 20:40:40 -08:00
iscsi_ibft_find.c Firmware: add iSCSI iBFT Support 2008-04-19 19:10:28 -07:00
iscsi_ibft.c Firmware: add iSCSI iBFT Support 2008-04-19 19:10:28 -07:00
Kconfig Firmware: add iSCSI iBFT Support 2008-04-19 19:10:28 -07:00
Makefile Firmware: add iSCSI iBFT Support 2008-04-19 19:10:28 -07:00
pcdp.c serial: convert early_uart to earlycon for 8250 2007-07-16 09:05:35 -07:00
pcdp.h [IA64] Make PCDP work again. 2005-07-13 11:56:32 -07:00