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Some ethernet adapter vendors are supplying products which support optional (payed license) features. On some adapters this includes a hardware iscsi initiator. The same adapters in a normal (no extra licenses) mode of operation can be used as a software iscsi initiator. In addition, software iscsi boot initiators are becoming a standard part of many vendors uefi implementations. This is creating difficulties during early boot/install determining the proper configuration method for these adapters when they are used as a boot device. The attached patch creates sysfs entries to expose information from the acpi header of the ibft table. This information allows for a method to easily determining if an ibft table was created by a ethernet card's firmware or the system uefi/bios. In the case of a hardware initiator this information in combination with the pci vendor and device id can be used to ascertain any vendor specific behaviors that need to be accommodated. Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: David Bond <dbond@suse.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
34 lines
1.5 KiB
Plaintext
34 lines
1.5 KiB
Plaintext
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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Usually this contains the IP address, MAC, and gateway of the NIC.
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What: /sys/firmware/ibft/acpi_header
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Date: March 2016
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Contact: David Bond <dbond@suse.com>
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Description: The /sys/firmware/ibft/acpi_header directory will contain files
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that expose the SIGNATURE, OEM_ID, and OEM_TABLE_ID fields of the
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acpi table header of the iBFT structure. This will allow for
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identification of the creator of the table which is useful in
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determining quirks associated with some adapters when used in
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hardware vs software iscsi initiator mode.
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