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| author | Bart Van Assche <bvanassche@acm.org> | 2024-01-30 13:48:41 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-02-26 21:37:26 -0500 |
| commit | f19c3e4fe2542d7b145d294386666958c9fabe17 (patch) | |
| tree | e006130302c6d0fd95c64406715afc524c31ee3a /drivers/scsi | |
| parent | b2f860903fe9774f755a917edc674ba6e879fa55 (diff) | |
| download | linux-f19c3e4fe2542d7b145d294386666958c9fabe17.tar.gz linux-f19c3e4fe2542d7b145d294386666958c9fabe17.tar.bz2 linux-f19c3e4fe2542d7b145d294386666958c9fabe17.zip | |
scsi: scsi_debug: Rework subpage code error handling
Move the subpage code checks into the switch statement to make it easier
to add support for new page code / subpage code combinations.
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Tested-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20240130214911.1863909-16-bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 70 |
1 files changed, 36 insertions, 34 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index ba0a29e6a86d..67a8e6243e5e 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -2703,22 +2703,22 @@ static int resp_mode_sense(struct scsi_cmnd *scp, ap = arr + offset; } - if ((subpcode > 0x0) && (subpcode < 0xff) && (0x19 != pcode)) { - /* TODO: Control Extension page */ - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; - } - switch (pcode) { case 0x1: /* Read-Write error recovery page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_err_recov_pg(ap, pcontrol, target); offset += len; break; case 0x2: /* Disconnect-Reconnect page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_disconnect_pg(ap, pcontrol, target); offset += len; break; case 0x3: /* Format device page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; if (is_disk) { len = resp_format_pg(ap, pcontrol, target); offset += len; @@ -2727,6 +2727,8 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0x8: /* Caching page, direct access */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; if (is_disk || is_zbc) { len = resp_caching_pg(ap, pcontrol, target); offset += len; @@ -2735,14 +2737,14 @@ static int resp_mode_sense(struct scsi_cmnd *scp, } break; case 0xa: /* Control Mode page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_ctrl_m_pg(ap, pcontrol, target); offset += len; break; case 0x19: /* if spc==1 then sas phy, control+discover */ - if ((subpcode > 0x2) && (subpcode < 0xff)) { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; - } + if (subpcode > 0x2 && subpcode < 0xff) + goto bad_subpcode; len = 0; if ((0x0 == subpcode) || (0xff == subpcode)) len += resp_sas_sf_m_pg(ap + len, pcontrol, target); @@ -2754,35 +2756,31 @@ static int resp_mode_sense(struct scsi_cmnd *scp, offset += len; break; case 0x1c: /* Informational Exceptions Mode page, all devices */ + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; len = resp_iec_m_pg(ap, pcontrol, target); offset += len; break; case 0x3f: /* Read all Mode pages */ - if ((0 == subpcode) || (0xff == subpcode)) { - len = resp_err_recov_pg(ap, pcontrol, target); - len += resp_disconnect_pg(ap + len, pcontrol, target); - if (is_disk) { - len += resp_format_pg(ap + len, pcontrol, - target); - len += resp_caching_pg(ap + len, pcontrol, - target); - } else if (is_zbc) { - len += resp_caching_pg(ap + len, pcontrol, - target); - } - len += resp_ctrl_m_pg(ap + len, pcontrol, target); - len += resp_sas_sf_m_pg(ap + len, pcontrol, target); - if (0xff == subpcode) { - len += resp_sas_pcd_m_spg(ap + len, pcontrol, - target, target_dev_id); - len += resp_sas_sha_m_spg(ap + len, pcontrol); - } - len += resp_iec_m_pg(ap + len, pcontrol, target); - offset += len; - } else { - mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); - return check_condition_result; + if (subpcode > 0x0 && subpcode < 0xff) + goto bad_subpcode; + len = resp_err_recov_pg(ap, pcontrol, target); + len += resp_disconnect_pg(ap + len, pcontrol, target); + if (is_disk) { + len += resp_format_pg(ap + len, pcontrol, target); + len += resp_caching_pg(ap + len, pcontrol, target); + } else if (is_zbc) { + len += resp_caching_pg(ap + len, pcontrol, target); + } + len += resp_ctrl_m_pg(ap + len, pcontrol, target); + len += resp_sas_sf_m_pg(ap + len, pcontrol, target); + if (0xff == subpcode) { + len += resp_sas_pcd_m_spg(ap + len, pcontrol, target, + target_dev_id); + len += resp_sas_sha_m_spg(ap + len, pcontrol); } + len += resp_iec_m_pg(ap + len, pcontrol, target); + offset += len; break; default: goto bad_pcode; @@ -2796,6 +2794,10 @@ static int resp_mode_sense(struct scsi_cmnd *scp, bad_pcode: mk_sense_invalid_fld(scp, SDEB_IN_CDB, 2, 5); return check_condition_result; + +bad_subpcode: + mk_sense_invalid_fld(scp, SDEB_IN_CDB, 3, -1); + return check_condition_result; } #define SDEBUG_MAX_MSELECT_SZ 512 |