diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-12-23 21:23:34 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-18 09:53:14 +0000 |
| commit | 0c30f421a7dba0a7ca9a3f67dad15d84d4d61e01 (patch) | |
| tree | fa5aad7ae66f5be460f18352de357d5c6c8bfff0 | |
| parent | 56dac14cd25259fc567c5c4726a8f30f0ea407ce (diff) | |
target/spc: Expose ATO bit in control mode page
This patch updates spc_modesense_control() to set the Application
Tag Owner (ATO) bit when 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>
| -rw-r--r-- | drivers/target/target_core_spc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 73fdff58d88..43c5ca9878b 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -858,6 +858,19 @@ static int spc_modesense_control(struct se_device *dev, u8 pc, u8 *p) * status (see SAM-4). */ p[5] = (dev->dev_attrib.emulate_tas) ? 0x40 : 0x00; + /* + * From spc4r30, section 7.5.7 Control mode page + * + * Application Tag Owner (ATO) bit set to one. + * + * If the ATO bit is set to one the device server shall not modify the + * LOGICAL BLOCK APPLICATION TAG field and, depending on the protection + * type, shall not modify the contents of the LOGICAL BLOCK REFERENCE + * TAG field. + */ + if (dev->dev_attrib.pi_prot_type) + p[5] |= 0x80; + p[8] = 0xff; p[9] = 0xff; p[11] = 30; |