From 43bb95c7c06de358de7ab525d28bb89b470c1892 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 23 Dec 2013 20:33:21 +0000 Subject: 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 Cc: Christoph Hellwig Cc: Hannes Reinecke Cc: Sagi Grimberg Cc: Or Gerlitz Signed-off-by: Nicholas Bellinger --- 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 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; -- cgit v1.2.3