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| author | Hannes Reinecke <hare@suse.de> | 2016-05-09 09:14:29 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-05-10 21:34:16 -0400 |
| commit | d230823a1c4c3e97afd4c934b86b3975d5e20249 (patch) | |
| tree | b9c38c8cb6529b861ac307fd5d9d73e0fec471c0 /drivers/scsi/scsi_lib.c | |
| parent | fe8b9534a0a0356f8a76467e2c561194bdb53c84 (diff) | |
| download | lwn-d230823a1c4c3e97afd4c934b86b3975d5e20249.tar.gz lwn-d230823a1c4c3e97afd4c934b86b3975d5e20249.zip | |
scsi_lib: Decode T10 vendor IDs
Some arrays / HBAs will only present T10 vendor IDs, so we should be
decoding them, too.
[mkp: Fixed T10 spelling]
Suggested-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Tested-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index b920c5dabf60..b2e332af0f51 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -3064,6 +3064,7 @@ int scsi_vpd_lun_id(struct scsi_device *sdev, char *id, size_t id_len) * - EUI-64 based 12-byte * - NAA IEEE Registered * - NAA IEEE Extended + * - T10 Vendor ID * as longer descriptors reduce the likelyhood * of identification clashes. */ @@ -3082,6 +3083,21 @@ int scsi_vpd_lun_id(struct scsi_device *sdev, char *id, size_t id_len) goto next_desig; switch (d[1] & 0xf) { + case 0x1: + /* T10 Vendor ID */ + if (cur_id_size > d[3]) + break; + /* Prefer anything */ + if (cur_id_type > 0x01 && cur_id_type != 0xff) + break; + cur_id_size = d[3]; + if (cur_id_size + 4 > id_len) + cur_id_size = id_len - 4; + cur_id_str = d + 4; + cur_id_type = d[1] & 0xf; + id_size = snprintf(id, id_len, "t10.%*pE", + cur_id_size, cur_id_str); + break; case 0x2: /* EUI-64 */ if (cur_id_size > d[3]) |