diff options
| author |   Hannes Reinecke <hare@suse.de> | 2013-12-17 09:18:48 +0100 |
|---|---|---|
| committer |   Nicholas Bellinger <nab@linux-iscsi.org> | 2013-12-17 18:04:30 -0800 |
| commit | fbfe858fea2a45df6339eb03dd1715b51f1bdc92 (patch) | |
| tree | f65f3bc17c6762a7e6bccd7272118ef0788f8ca1 | |
| parent | target_core: simplify scsi_name_len calculation (diff) | |
| download | linux-dev-fbfe858fea2a45df6339eb03dd1715b51f1bdc92.tar.xz linux-dev-fbfe858fea2a45df6339eb03dd1715b51f1bdc92.zip | |
target_core_spc: Include target device descriptor in VPD page 83
We should be including a descriptor referring to the target device
to allow identification of different TCM instances.
(nab: Bump SE_INQUIRY_BUF to 1024 bytes to handle 2x 256 byte SCSI names)
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| -rw-r--r-- | drivers/target/target_core_spc.c | 43 | ||||
| -rw-r--r-- | include/target/target_core_base.h | 2 |
2 files changed, 43 insertions, 2 deletions
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 603c41105aa7..39054d9029f3 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -267,7 +267,7 @@ check_t10_vend_desc: port = lun->lun_sep; if (port) { struct t10_alua_lu_gp *lu_gp; - u32 padding, scsi_name_len; + u32 padding, scsi_name_len, scsi_target_len; u16 lu_gp_id = 0; u16 tg_pt_gp_id = 0; u16 tpgt; @@ -402,6 +402,47 @@ check_scsi_name: off += scsi_name_len; /* Header size + Designation descriptor */ len += (scsi_name_len + 4); + + /* + * Target device designator + */ + buf[off] = + (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); + buf[off++] |= 0x3; /* CODE SET == UTF-8 */ + buf[off] = 0x80; /* Set PIV=1 */ + /* Set ASSOCIATION == target device: 10b */ + buf[off] |= 0x20; + /* DESIGNATOR TYPE == SCSI name string */ + buf[off++] |= 0x8; + off += 2; /* Skip over Reserved and length */ + /* + * SCSI name string identifer containing, $FABRIC_MOD + * dependent information. For LIO-Target and iSCSI + * Target Port, this means "<iSCSI name>" in + * UTF-8 encoding. + */ + scsi_target_len = sprintf(&buf[off], "%s", + tpg->se_tpg_tfo->tpg_get_wwn(tpg)); + scsi_target_len += 1 /* Include NULL terminator */; + /* + * The null-terminated, null-padded (see 4.4.2) SCSI + * NAME STRING field contains a UTF-8 format string. + * The number of bytes in the SCSI NAME STRING field + * (i.e., the value in the DESIGNATOR LENGTH field) + * shall be no larger than 256 and shall be a multiple + * of four. + */ + padding = ((-scsi_target_len) & 3); + if (padding) + scsi_target_len += padding; + if (scsi_name_len > 256) + scsi_name_len = 256; + + buf[off-1] = scsi_target_len; + off += scsi_target_len; + + /* Header size + Designation descriptor */ + len += (scsi_target_len + 4); } buf[2] = ((len >> 8) & 0xff); buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index e653110acb61..6c8001516c6d 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -112,7 +112,7 @@ /* Queue Algorithm Modifier default for restricted reordering in control mode page */ #define DA_EMULATE_REST_REORD 0 -#define SE_INQUIRY_BUF 512 +#define SE_INQUIRY_BUF 768 #define SE_MODE_PAGE_BUF 512 #define SE_SENSE_BUF 96 |