scsi: qla2xxx: Fix task management cmd failure

commit 9803fb5d27597ea98f2e05b0b6cfc48ae808458e upstream.

Task management cmd failed with status 30h which means
FW is not able to finish processing one task management
before another task management for the same lun.
Hence add wait for completion of marker to space it out.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202304271802.uCZfwQC1-lkp@intel.com/
Cc: stable@vger.kernel.org
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Link: https://lore.kernel.org/r/20230428075339.32551-3-njavali@marvell.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com <mailto:himanshu.madhani@oracle.com>>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

4 files changed, 139 insertions, 23 deletions

diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 525a694bd738..62ee5d35115a 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -463,6 +463,7 @@ struct tmf_arg {
 	struct scsi_qla_host *vha;
 	u64 lun;
 	u32 flags;
+	uint8_t modifier;
 };
 
 struct els_logo_payload {
@@ -544,6 +545,10 @@ struct srb_iocb {
 			uint32_t data;
 			struct completion comp;
 			__le16 comp_status;
+
+			uint8_t modifier;
+			uint8_t vp_index;
+			uint16_t loop_id;
 		} tmf;
 		struct {
 #define SRB_FXDISC_REQ_DMA_VALID	BIT_0
@@ -647,6 +652,7 @@ struct srb_iocb {
 #define SRB_SA_UPDATE	25
 #define SRB_ELS_CMD_HST_NOLOGIN 26
 #define SRB_SA_REPLACE	27
+#define SRB_MARKER	28
 
 struct qla_els_pt_arg {
 	u8 els_opcode;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index d449e0f707c4..ca84190924f1 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -2014,6 +2014,80 @@ qla2x00_tmf_iocb_timeout(void *data)
 	}
 }
 
+static void qla_marker_sp_done(srb_t *sp, int res)
+{
+	struct srb_iocb *tmf = &sp->u.iocb_cmd;
+
+	if (res != QLA_SUCCESS)
+		ql_dbg(ql_dbg_taskm, sp->vha, 0x8004,
+		    "Async-marker fail hdl=%x portid=%06x ctrl=%x lun=%lld qp=%d.\n",
+		    sp->handle, sp->fcport->d_id.b24, sp->u.iocb_cmd.u.tmf.flags,
+		    sp->u.iocb_cmd.u.tmf.lun, sp->qpair->id);
+
+	complete(&tmf->u.tmf.comp);
+}
+
+#define  START_SP_W_RETRIES(_sp, _rval) \
+{\
+	int cnt = 5; \
+	do { \
+		_rval = qla2x00_start_sp(_sp); \
+		if (_rval == EAGAIN) \
+			msleep(1); \
+		else \
+			break; \
+		cnt--; \
+	} while (cnt); \
+}
+
+static int
+qla26xx_marker(struct tmf_arg *arg)
+{
+	struct scsi_qla_host *vha = arg->vha;
+	struct srb_iocb *tm_iocb;
+	srb_t *sp;
+	int rval = QLA_FUNCTION_FAILED;
+	fc_port_t *fcport = arg->fcport;
+
+	/* ref: INIT */
+	sp = qla2xxx_get_qpair_sp(vha, arg->qpair, fcport, GFP_KERNEL);
+	if (!sp)
+		goto done;
+
+	sp->type = SRB_MARKER;
+	sp->name = "marker";
+	qla2x00_init_async_sp(sp, qla2x00_get_async_timeout(vha), qla_marker_sp_done);
+	sp->u.iocb_cmd.timeout = qla2x00_tmf_iocb_timeout;
+
+	tm_iocb = &sp->u.iocb_cmd;
+	init_completion(&tm_iocb->u.tmf.comp);
+	tm_iocb->u.tmf.modifier = arg->modifier;
+	tm_iocb->u.tmf.lun = arg->lun;
+	tm_iocb->u.tmf.loop_id = fcport->loop_id;
+	tm_iocb->u.tmf.vp_index = vha->vp_idx;
+
+	START_SP_W_RETRIES(sp, rval);
+
+	ql_dbg(ql_dbg_taskm, vha, 0x8006,
+	    "Async-marker hdl=%x loop-id=%x portid=%06x modifier=%x lun=%lld qp=%d rval %d.\n",
+	    sp->handle, fcport->loop_id, fcport->d_id.b24,
+	    arg->modifier, arg->lun, sp->qpair->id, rval);
+
+	if (rval != QLA_SUCCESS) {
+		ql_log(ql_log_warn, vha, 0x8031,
+		    "Marker IOCB failed (%x).\n", rval);
+		goto done_free_sp;
+	}
+
+	wait_for_completion(&tm_iocb->u.tmf.comp);
+
+done_free_sp:
+	/* ref: INIT */
+	kref_put(&sp->cmd_kref, qla2x00_sp_release);
+done:
+	return rval;
+}
+
 static void qla2x00_tmf_sp_done(srb_t *sp, int res)
 {
 	struct srb_iocb *tmf = &sp->u.iocb_cmd;
@@ -2027,7 +2101,6 @@ __qla2x00_async_tm_cmd(struct tmf_arg *arg)
 	struct scsi_qla_host *vha = arg->vha;
 	struct srb_iocb *tm_iocb;
 	srb_t *sp;
-	unsigned long flags;
 	int rval = QLA_FUNCTION_FAILED;
 
 	fc_port_t *fcport = arg->fcport;
@@ -2049,11 +2122,12 @@ __qla2x00_async_tm_cmd(struct tmf_arg *arg)
 	tm_iocb->u.tmf.flags = arg->flags;
 	tm_iocb->u.tmf.lun = arg->lun;
 
-	rval = qla2x00_start_sp(sp);
+	START_SP_W_RETRIES(sp, rval);
+
 	ql_dbg(ql_dbg_taskm, vha, 0x802f,
-	    "Async-tmf hdl=%x loop-id=%x portid=%02x%02x%02x ctrl=%x.\n",
-	    sp->handle, fcport->loop_id, fcport->d_id.b.domain,
-	    fcport->d_id.b.area, fcport->d_id.b.al_pa, arg->flags);
+	    "Async-tmf hdl=%x loop-id=%x portid=%06x ctrl=%x lun=%lld qp=%d rval=%x.\n",
+	    sp->handle, fcport->loop_id, fcport->d_id.b24,
+	    arg->flags, arg->lun, sp->qpair->id, rval);
 
 	if (rval != QLA_SUCCESS)
 		goto done_free_sp;
@@ -2066,17 +2140,8 @@ __qla2x00_async_tm_cmd(struct tmf_arg *arg)
 		    "TM IOCB failed (%x).\n", rval);
 	}
 
-	if (!test_bit(UNLOADING, &vha->dpc_flags) && !IS_QLAFX00(vha->hw)) {
-		flags = tm_iocb->u.tmf.flags;
-		if (flags & (TCF_LUN_RESET|TCF_ABORT_TASK_SET|
-			TCF_CLEAR_TASK_SET|TCF_CLEAR_ACA))
-			flags = MK_SYNC_ID_LUN;
-		else
-			flags = MK_SYNC_ID;
-
-		qla2x00_marker(vha, sp->qpair,
-		    sp->fcport->loop_id, arg->lun, flags);
-	}
+	if (!test_bit(UNLOADING, &vha->dpc_flags) && !IS_QLAFX00(vha->hw))
+		rval = qla26xx_marker(arg);
 
 done_free_sp:
 	/* ref: INIT */
@@ -2100,6 +2165,11 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun,
 	a.fcport = fcport;
 	a.lun = lun;
 
+	if (flags & (TCF_LUN_RESET|TCF_ABORT_TASK_SET|TCF_CLEAR_TASK_SET|TCF_CLEAR_ACA))
+		a.modifier = MK_SYNC_ID_LUN;
+	else
+		a.modifier = MK_SYNC_ID;
+
 	if (vha->hw->mqenable) {
 		for (i = 0; i < vha->hw->num_qpairs; i++) {
 			qpair = vha->hw->queue_pair_map[i];
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 6ae337cc5a4c..f6a9fdb3151d 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -522,21 +522,25 @@ __qla2x00_marker(struct scsi_qla_host *vha, struct qla_qpair *qpair,
 		return (QLA_FUNCTION_FAILED);
 	}
 
+	mrk24 = (struct mrk_entry_24xx *)mrk;
+
 	mrk->entry_type = MARKER_TYPE;
 	mrk->modifier = type;
 	if (type != MK_SYNC_ALL) {
 		if (IS_FWI2_CAPABLE(ha)) {
-			mrk24 = (struct mrk_entry_24xx *) mrk;
 			mrk24->nport_handle = cpu_to_le16(loop_id);
 			int_to_scsilun(lun, (struct scsi_lun *)&mrk24->lun);
 			host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
 			mrk24->vp_index = vha->vp_idx;
-			mrk24->handle = make_handle(req->id, mrk24->handle);
 		} else {
 			SET_TARGET_ID(ha, mrk->target, loop_id);
 			mrk->lun = cpu_to_le16((uint16_t)lun);
 		}
 	}
+
+	if (IS_FWI2_CAPABLE(ha))
+		mrk24->handle = QLA_SKIP_HANDLE;
+
 	wmb();
 
 	qla2x00_start_iocbs(vha, req);
@@ -3859,9 +3863,9 @@ int qla_get_iocbs_resource(struct srb *sp)
 	case SRB_NACK_LOGO:
 	case SRB_LOGOUT_CMD:
 	case SRB_CTRL_VP:
-		push_it_through = true;
-		fallthrough;
+	case SRB_MARKER:
 	default:
+		push_it_through = true;
 		get_exch = false;
 	}
 
@@ -3877,6 +3881,19 @@ int qla_get_iocbs_resource(struct srb *sp)
 	return qla_get_fw_resources(sp->qpair, &sp->iores);
 }
 
+static void
+qla_marker_iocb(srb_t *sp, struct mrk_entry_24xx *mrk)
+{
+	mrk->entry_type = MARKER_TYPE;
+	mrk->modifier = sp->u.iocb_cmd.u.tmf.modifier;
+	if (sp->u.iocb_cmd.u.tmf.modifier != MK_SYNC_ALL) {
+		mrk->nport_handle = cpu_to_le16(sp->u.iocb_cmd.u.tmf.loop_id);
+		int_to_scsilun(sp->u.iocb_cmd.u.tmf.lun, (struct scsi_lun *)&mrk->lun);
+		host_to_fcp_swap(mrk->lun, sizeof(mrk->lun));
+		mrk->vp_index = sp->u.iocb_cmd.u.tmf.vp_index;
+	}
+}
+
 int
 qla2x00_start_sp(srb_t *sp)
 {
@@ -3980,6 +3997,9 @@ qla2x00_start_sp(srb_t *sp)
 	case SRB_SA_REPLACE:
 		qla24xx_sa_replace_iocb(sp, pkt);
 		break;
+	case SRB_MARKER:
+		qla_marker_iocb(sp, pkt);
+		break;
 	default:
 		break;
 	}
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 86928a762a7a..23b8c020e6ac 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3750,6 +3750,28 @@ static int qla_chk_cont_iocb_avail(struct scsi_qla_host *vha,
 	return rc;
 }
 
+static void qla_marker_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
+	struct mrk_entry_24xx *pkt)
+{
+	const char func[] = "MRK-IOCB";
+	srb_t *sp;
+	int res = QLA_SUCCESS;
+
+	if (!IS_FWI2_CAPABLE(vha->hw))
+		return;
+
+	sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
+	if (!sp)
+		return;
+
+	if (pkt->entry_status) {
+		ql_dbg(ql_dbg_taskm, vha, 0x8025, "marker failure.\n");
+		res = QLA_COMMAND_ERROR;
+	}
+	sp->u.iocb_cmd.u.tmf.data = res;
+	sp->done(sp, res);
+}
+
 /**
  * qla24xx_process_response_queue() - Process response queue entries.
  * @vha: SCSI driver HA context
@@ -3864,9 +3886,7 @@ process_err:
 					(struct nack_to_isp *)pkt);
 			break;
 		case MARKER_TYPE:
-			/* Do nothing in this case, this check is to prevent it
-			 * from falling into default case
-			 */
+			qla_marker_iocb_entry(vha, rsp->req, (struct mrk_entry_24xx *)pkt);
 			break;
 		case ABORT_IOCB_TYPE:
 			qla24xx_abort_iocb_entry(vha, rsp->req,