From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> 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. Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Hannes Reinecke <hare@xxxxxxx> Cc: Sagi Grimberg <sagig@xxxxxxxxxxxx> Cc: Or Gerlitz <ogerlitz@xxxxxxxxxxxx> Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> --- drivers/target/target_core_spc.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 6b06f01..d99eb95 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -441,6 +441,15 @@ 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; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
