Issuing a LUN reset was resulting in a command failure which then
escalated to a host reset.
The FCP-4 spec allows fcp_rsp_len field to specify the number of
valid bytes of FCP_RSP_INFO, and the value could be 4 or 8.
The driver is allowing only a value of 8, thus it failed the
command.
Revise the driver to allow 4 or 8
Signed-off-by: Dick Kennedy <dick.kennedy@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
drivers/scsi/lpfc/lpfc_scsi.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 5a5a9bbe6023..f9df800e7067 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -4798,7 +4798,12 @@ lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_io_buf *lpfc_cmd)
rsp_info,
rsp_len, rsp_info_code);
- if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) {
+ /* If FCP_RSP_LEN_VALID bit is one, then the FCP_RSP_LEN
+ * field specifies the number of valid bytes of FCP_RSP_INFO.
+ * The FCP_RSP_LEN field shall be set to 0x04 or 0x08
+ */
+ if ((fcprsp->rspStatus2 & RSP_LEN_VALID) &&
+ ((rsp_len == 8) || (rsp_len == 4))) {
switch (rsp_info_code) {
case RSP_NO_FAILURE:
lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP,
--
2.13.7
