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| author | Konstantin Shelekhin <k.shelekhin@yadro.com> | 2021-05-13 22:28:04 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-05-15 21:34:26 +0300 |
| commit | b790a56d66eaac4a1ac6c558575fd0a694b06159 (patch) | |
| tree | 8a5f6106e0f3fe866305eb9979bd3afd49fd91f2 /drivers/target | |
| parent | 64ae33ef7486d01acb1f1d1ea601923973a3a462 (diff) | |
| download | linux-b790a56d66eaac4a1ac6c558575fd0a694b06159.tar.xz | |
scsi: target: core: Add the VERSION DESCRIPTOR fields to the INQUIRY data
Extend the standard INQUIRY data to 96 bytes and fill in the VERSION
DESCRIPTOR fields.
The layout follows SPC-4:
- SCSI architecture standard
- SCSI transport protocol standard
- SCSI primary command set standard
- SCSI device type command set standard
All version descriptor values are defined as "no version claimed" because
some initiators fail to recognize anything else.
[mkp: whitespace]
Link: https://lore.kernel.org/r/20210513192804.1252142-3-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_spc.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 0f30b71f0acc..2cb141ed68f5 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -47,10 +47,32 @@ static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf) spin_unlock(&lun->lun_tg_pt_gp_lock); } +static u16 +spc_find_scsi_transport_vd(int proto_id) +{ + switch (proto_id) { + case SCSI_PROTOCOL_FCP: + return SCSI_VERSION_DESCRIPTOR_FCP4; + case SCSI_PROTOCOL_ISCSI: + return SCSI_VERSION_DESCRIPTOR_ISCSI; + case SCSI_PROTOCOL_SAS: + return SCSI_VERSION_DESCRIPTOR_SAS3; + case SCSI_PROTOCOL_SBP: + return SCSI_VERSION_DESCRIPTOR_SBP3; + case SCSI_PROTOCOL_SRP: + return SCSI_VERSION_DESCRIPTOR_SRP; + default: + pr_warn("Cannot find VERSION DESCRIPTOR value for unknown SCSI" + " transport PROTOCOL IDENTIFIER %#x\n", proto_id); + return 0; + } +} + sense_reason_t spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) { struct se_lun *lun = cmd->se_lun; + struct se_portal_group *tpg = lun->lun_tpg; struct se_device *dev = cmd->se_dev; struct se_session *sess = cmd->se_sess; @@ -108,7 +130,17 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); memcpy(&buf[32], dev->t10_wwn.revision, strnlen(dev->t10_wwn.revision, INQUIRY_REVISION_LEN)); - buf[4] = 31; /* Set additional length to 31 */ + + /* + * Set the VERSION DESCRIPTOR fields + */ + put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SAM5, &buf[58]); + put_unaligned_be16(spc_find_scsi_transport_vd(tpg->proto_id), &buf[60]); + put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SPC4, &buf[62]); + if (cmd->se_dev->transport->get_device_type(dev) == TYPE_DISK) + put_unaligned_be16(SCSI_VERSION_DESCRIPTOR_SBC3, &buf[64]); + + buf[4] = 91; /* Set additional length to 91 */ return 0; } |