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target/spc: Only expose PI inquiry bits when supported by fabric 

Only expose standard INQUIRY PROTECT=1 and EVPD=0x86 TYPE1/TYPE3
PI control bits if the session + fabric support DIX PASS operations.

Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2014-04-02 13:27:43 -07:00
Родитель e70beee783
Коммит d2c5304c7a
1 изменённых файлов: 14 добавлений и 7 удалений
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21
drivers/target/target_core_spc.c
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@ -71,6 +71,7 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)
{
struct se_lun *lun = cmd->se_lun;
struct se_device *dev = cmd->se_dev;
struct se_session *sess = cmd->se_sess;
/* Set RMB (removable media) for tape devices */
if (dev->transport->get_device_type(dev) == TYPE_TAPE)
@ -101,10 +102,13 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)
if (dev->dev_attrib.emulate_3pc)
buf[5] |= 0x8;
/*
* Set Protection (PROTECT) bit when DIF has been enabled.
* Set Protection (PROTECT) bit when DIF has been enabled on the
* device, and the transport supports VERIFY + PASS.
*/
if (dev->dev_attrib.pi_prot_type)
buf[5] |= 0x1;
if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) {
if (dev->dev_attrib.pi_prot_type)
buf[5] |= 0x1;
}
buf[7] = 0x2; /* CmdQue=1 */
@ -473,16 +477,19 @@ static sense_reason_t
spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
{
struct se_device *dev = cmd->se_dev;
struct se_session *sess = cmd->se_sess;
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;
if (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) {
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;