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authorNicholas Bellinger <nab@linux-iscsi.org>2013-12-23 20:36:09 +0000
committerNicholas Bellinger <nab@linux-iscsi.org>2014-01-18 09:53:13 +0000
commit56dac14cd25259fc567c5c4726a8f30f0ea407ce (patch)
tree9a7edd5686cf5f571c0740c69f64d22550d33b72 /drivers/target
parent43bb95c7c06de358de7ab525d28bb89b470c1892 (diff)
downloadop-kernel-dev-56dac14cd25259fc567c5c4726a8f30f0ea407ce.zip
op-kernel-dev-56dac14cd25259fc567c5c4726a8f30f0ea407ce.tar.gz
target/sbc: Add P_TYPE + PROT_EN bits to READ_CAPACITY_16
This patch updates sbc_emulate_readcapacity_16() to set P_TYPE and PROT_EN bits when DIF emulation is enabled by the backend device. Reviewed-by: 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>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_sbc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 26e8bfb..75364c7 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -106,6 +106,11 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
buf[9] = (dev->dev_attrib.block_size >> 16) & 0xff;
buf[10] = (dev->dev_attrib.block_size >> 8) & 0xff;
buf[11] = dev->dev_attrib.block_size & 0xff;
+ /*
+ * Set P_TYPE and PROT_EN bits for DIF support
+ */
+ if (dev->dev_attrib.pi_prot_type)
+ buf[12] = (dev->dev_attrib.pi_prot_type - 1) << 1 | 0x1;
if (dev->transport->get_lbppbe)
buf[13] = dev->transport->get_lbppbe(dev) & 0x0f;
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