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authorNicholas Bellinger <nab@linux-iscsi.org>2013-12-23 20:33:21 +0000
committerNicholas Bellinger <nab@linux-iscsi.org>2014-01-18 09:53:13 +0000
commit43bb95c7c06de358de7ab525d28bb89b470c1892 (patch)
treeb9060e1dd8c2e5789b83447e6188fd062c14b43f /drivers/target
parentbdbad2bdcbda68746cdff36459cfb1bf4b1d5e59 (diff)
downloadlinux-43bb95c7c06de358de7ab525d28bb89b470c1892.tar.gz
target/spc: Add protection related bits to INQUIRY EVPD=0x86
This patch updates spc_emulate_evpd_86() (extended INQUIRY) to report GRD_CHK (Guard Check) and REF_CHK (Reference Check) 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_spc.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 4178c2a0f210..73fdff58d88d 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -475,6 +475,15 @@ spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
struct se_device *dev = cmd->se_dev;
buf[3] = 0x3c;
+ /*
+ * Set GRD_CHK + REF_CHK for TYPE1 protection, or GRD_CHK
+ * only for TYPE3 protection.
+ */
+ if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE1_PROT)
+ buf[4] = 0x5;
+ else if (dev->dev_attrib.pi_prot_type == TARGET_DIF_TYPE3_PROT)
+ buf[4] = 0x4;
+
/* Set HEADSUP, ORDSUP, SIMPSUP */
buf[5] = 0x07;