target/iblock: Add blk_integrity + BIP passthrough support
This patch adds blk_integrity passthrough support for block_device
backends using IBLOCK.
This includes iblock_alloc_bip() + setup of bio_integrity_payload
information that attaches to the leading struct bio once bio_list
is populated during fast-path iblock_execute_rw() I/O dispatch.
It also updates setup in iblock_configure_device() to detect modes
of protection + se dev->dev_attrib.pi_prot_type accordingly, along
with creating required bio_set integrity mempools.
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
diff --git a/drivers/target/Kconfig b/drivers/target/Kconfig
index 50aad2e..dc2d84a 100644
--- a/drivers/target/Kconfig
+++ b/drivers/target/Kconfig
@@ -14,6 +14,7 @@
config TCM_IBLOCK
tristate "TCM/IBLOCK Subsystem Plugin for Linux/BLOCK"
+ select BLK_DEV_INTEGRITY
help
Say Y here to enable the TCM/IBLOCK subsystem plugin for non-buffered
access to Linux/Block devices using BIO