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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>
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1,022 B
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23 lines
1,022 B
Text
What: /sys/firmware/ibft/initiator
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Date: November 2007
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Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
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Description: The /sys/firmware/ibft/initiator directory will contain
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files that expose the iSCSI Boot Firmware Table initiator data.
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Usually this contains the Initiator name.
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What: /sys/firmware/ibft/targetX
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Date: November 2007
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Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
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Description: The /sys/firmware/ibft/targetX directory will contain
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files that expose the iSCSI Boot Firmware Table target data.
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Usually this contains the target's IP address, boot LUN,
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target name, and what NIC it is associated with. It can also
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contain the CHAP name (and password), the reverse CHAP
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name (and password)
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What: /sys/firmware/ibft/ethernetX
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Date: November 2007
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Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
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Description: The /sys/firmware/ibft/ethernetX directory will contain
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files that expose the iSCSI Boot Firmware Table NIC data.
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This can this can the IP address, MAC, and gateway of the NIC.
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