[PATCH 6/7] qla2xxx: Fix remoteport disconnect for FC-NVMe

[Himanshu Madhani]

Signed-off-by: Duane Grigsby <duane.grig...@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madh...@cavium.com>
---
 drivers/scsi/qla2xxx/qla_isr.c  | 37 +++++++++++++++++++++++++++++++------
 drivers/scsi/qla2xxx/qla_nvme.c | 11 ++++++++---
 2 files changed, 39 insertions(+), 9 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 317fe6026856..c14fab35fc36 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1856,17 +1856,42 @@ qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct 
req_que *req, void *tsk)
        fd->transferred_length = fd->payload_length -
            le32_to_cpu(sts->residual_len);
 
+       /*
+        * If transport error then Failure (HBA rejects request)
+        * otherwise transport will handle.
+        */
        if (sts->entry_status) {
                ql_log(ql_log_warn, fcport->vha, 0x5038,
                    "NVME-%s error - hdl=%x entry-status(%x).\n",
                    sp->name, sp->handle, sts->entry_status);
                ret = QLA_FUNCTION_FAILED;
-       } else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
-               ql_log(ql_log_warn, fcport->vha, 0x5039,
-                   "NVME-%s error - hdl=%x completion status(%x) resid=%x  
ox_id=%x\n",
-                   sp->name, sp->handle, sts->comp_status,
-                   le32_to_cpu(sts->residual_len), sts->ox_id);
-               ret = QLA_FUNCTION_FAILED;
+       } else  {
+               switch (le16_to_cpu(sts->comp_status)) {
+                       case CS_COMPLETE:
+                               ret = 0;
+                       break;
+
+                       case CS_ABORTED:
+                       case CS_RESET:
+                       case CS_PORT_UNAVAILABLE:
+                       case CS_PORT_LOGGED_OUT:
+                       case CS_PORT_BUSY:
+                               ql_log(ql_log_warn, fcport->vha, 0x5060,
+                               "NVME-%s ERR Handling - hdl=%x completion 
status(%x) resid=%x  ox_id=%x\n",
+                               sp->name, sp->handle, sts->comp_status,
+                               le32_to_cpu(sts->residual_len), sts->ox_id);
+                               fd->transferred_length = fd->payload_length;
+                               ret = QLA_ABORTED;
+                       break;
+
+                       default:
+                               ql_log(ql_log_warn, fcport->vha, 0x5060,
+                               "NVME-%s error - hdl=%x completion status(%x) 
resid=%x  ox_id=%x\n",
+                               sp->name, sp->handle, sts->comp_status,
+                               le32_to_cpu(sts->residual_len), sts->ox_id);
+                               ret = QLA_FUNCTION_FAILED;
+                               break;
+               }
        }
        sp->done(sp, ret);
 }
diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index ccafcdb228e8..da32a06f17a0 100644
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -180,13 +180,13 @@ static void qla_nvme_sp_done(void *ptr, int res)
        if (!(sp->fcport->nvme_flag & NVME_FLAG_REGISTERED))
                goto rel;
 
-       if (unlikely(nvme->u.nvme.comp_status || res))
-               fd->status = -EINVAL;
+       if (unlikely(res == QLA_FUNCTION_FAILED))
+               fd->status = NVME_SC_FC_TRANSPORT_ERROR;
        else
                fd->status = 0;
 
        fd->rcv_rsplen = nvme->u.nvme.rsp_pyld_len;
-       if (res == QLA_FUNCTION_FAILED) {
+       if (res) {
                INIT_WORK(&nvme->rq_work, qla_nvme_io_work);
                queue_work(sp->fcport->vha->nvme_io_wq, &nvme->rq_work);
                return;
@@ -653,13 +653,18 @@ static void qla_nvme_unregister_remote_port(struct 
work_struct *work)
        if (!IS_ENABLED(CONFIG_NVME_FC))
                return;
 
+       ql_log(ql_log_warn, NULL, 0x2112,
+           "%s: unregister remoteport on %p\n",__func__, fcport);
+
        list_for_each_entry_safe(rport, trport,
            &fcport->vha->nvme_rport_list, list) {
                if (rport->fcport == fcport) {
                        ql_log(ql_log_info, fcport->vha, 0x2113,
                            "%s: fcport=%p\n", __func__, fcport);
+                       init_completion(&fcport->nvme_del_done);
                        nvme_fc_unregister_remoteport(
                            fcport->nvme_remote_port);
+                       qla_nvme_wait_on_rport_del(fcport);
                }
        }
 }
-- 
2.12.0