Messages in this thread |  | | Date | Wed, 22 Jan 2014 18:44:30 +0200 | From | Sagi Grimberg <> | Subject | Re: [PATCH-v2 02/17] target: Add DIF CHECK_CONDITION ASC/ASCQ exception cases |
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On 1/19/2014 4:44 AM, Nicholas A. Bellinger wrote: > From: Nicholas Bellinger <nab@linux-iscsi.org> > > This patch adds support for DIF related CHECK_CONDITION ASC/ASCQ > exception cases into transport_send_check_condition_and_sense(). > > This includes: > > LOGICAL BLOCK GUARD CHECK FAILED > LOGICAL BLOCK APPLICATION TAG CHECK FAILED > LOGICAL BLOCK REFERENCE TAG CHECK FAILED > > that used by DIF TYPE1 and TYPE3 failure cases. > > Cc: 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> > --- > drivers/target/target_core_transport.c | 30 ++++++++++++++++++++++++++++++ > include/target/target_core_base.h | 3 +++ > 2 files changed, 33 insertions(+) > > diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c > index 18c828d..fa4fc04 100644 > --- a/drivers/target/target_core_transport.c > +++ b/drivers/target/target_core_transport.c > @@ -2674,6 +2674,36 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd, > buffer[SPC_ASC_KEY_OFFSET] = 0x1d; > buffer[SPC_ASCQ_KEY_OFFSET] = 0x00; > break; > + case TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED: > + /* CURRENT ERROR */ > + buffer[0] = 0x70; > + buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; > + /* ILLEGAL REQUEST */ > + buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; > + /* LOGICAL BLOCK GUARD CHECK FAILED */ > + buffer[SPC_ASC_KEY_OFFSET] = 0x10; > + buffer[SPC_ASCQ_KEY_OFFSET] = 0x01; > + break; > + case TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED: > + /* CURRENT ERROR */ > + buffer[0] = 0x70; > + buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; > + /* ILLEGAL REQUEST */ > + buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; > + /* LOGICAL BLOCK APPLICATION TAG CHECK FAILED */ > + buffer[SPC_ASC_KEY_OFFSET] = 0x10; > + buffer[SPC_ASCQ_KEY_OFFSET] = 0x02; > + break; > + case TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED: > + /* CURRENT ERROR */ > + buffer[0] = 0x70; > + buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10; > + /* ILLEGAL REQUEST */ > + buffer[SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST; > + /* LOGICAL BLOCK REFERENCE TAG CHECK FAILED */ > + buffer[SPC_ASC_KEY_OFFSET] = 0x10; > + buffer[SPC_ASCQ_KEY_OFFSET] = 0x03; > + break;
Hey Nic,
I think we missed the failed LBA here. AFAICT According to SPC-4, a DIF error should be accompanied by Information sense-data descriptor with the (first) failed sector in the information field. This means that this routine should be ready to accept a u32 bad_sector or something. I'm not sure how much of a must it really is.
Let me prepare a patch...
Sagi.
> case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE: > default: > /* CURRENT ERROR */ > diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h > index d98048b..0336d70 100644 > --- a/include/target/target_core_base.h > +++ b/include/target/target_core_base.h > @@ -205,6 +205,9 @@ enum tcm_sense_reason_table { > TCM_OUT_OF_RESOURCES = R(0x12), > TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13), > TCM_MISCOMPARE_VERIFY = R(0x14), > + TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15), > + TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16), > + TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17), > #undef R > }; >
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