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authorNicholas Bellinger <nab@linux-iscsi.org>2014-04-02 13:34:04 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2014-04-07 01:48:56 -0700
commit2d3359832513ac62a8bd6d2bffbb2c5bdd29aad3 (patch)
treecae9200f111c4cf2d16bc88c1e0c20f29edd5bdc /drivers/target/target_core_sbc.c
parentd45aca42a25c4ba7a73115fcf2283ee1a822665e (diff)
target/sbc: Only expose PI read_cap16 bits when supported by fabric
Only expose the PI protection type bits in READ_CAPACITY_16 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>
Diffstat (limited to 'drivers/target/target_core_sbc.c')
-rw-r--r--drivers/target/target_core_sbc.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index ec204f7ef126..f2d73dd4f9a3 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -89,6 +89,7 @@ static sense_reason_t
sbc_emulate_readcapacity_16(struct se_cmd *cmd)
{
struct se_device *dev = cmd->se_dev;
+ struct se_session *sess = cmd->se_sess;
unsigned char *rbuf;
unsigned char buf[32];
unsigned long long blocks = dev->transport->get_blocks(dev);
@@ -109,8 +110,10 @@ sbc_emulate_readcapacity_16(struct se_cmd *cmd)
/*
* 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 (sess->sup_prot_ops & (TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS)) {
+ 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;