[SCSI] bfa: Added support to configure QOS and collect stats.

- Added support to configure QOS on Brocade adapter ports.
- Added support to collect / reset QOS statistics.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/bfa/bfa_defs_svc.h b/drivers/scsi/bfa/bfa_defs_svc.h
index 21e3fbf..263438b 100644 (file)
--- a/drivers/scsi/bfa/bfa_defs_svc.h
+++ b/drivers/scsi/bfa/bfa_defs_svc.h
@@ -469,6 +469,7 @@ struct bfa_fw_stats_s {
  * QoS states
  */
 enum bfa_qos_state {
+       BFA_QOS_DISABLED = 0,           /* QoS is disabled */
        BFA_QOS_ONLINE = 1,             /*  QoS is online */
        BFA_QOS_OFFLINE = 2,            /*  QoS is offline */
 };

diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c
index 9884d6e..d0ed4dd 100644 (file)
--- a/drivers/scsi/bfa/bfa_svc.c
+++ b/drivers/scsi/bfa/bfa_svc.c
@@ -2230,6 +2230,11 @@ bfa_fcport_sm_linkdown(struct bfa_fcport_s *fcport,
                BFA_LOG(KERN_INFO, bfad, bfa_log_level,
                        "Base port online: WWN = %s\n", pwwn_buf);
                bfa_fcport_aen_post(fcport, BFA_PORT_AEN_ONLINE);
+
+               /* If QoS is enabled and it is not online, send AEN */
+               if (fcport->cfg.qos_enabled &&
+                   fcport->qos_attr.state != BFA_QOS_ONLINE)
+                       bfa_fcport_aen_post(fcport, BFA_PORT_AEN_QOS_NEG);
                break;
 
        case BFA_FCPORT_SM_LINKDOWN:
@@ -3454,6 +3459,11 @@ bfa_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
                                fcport->use_flash_cfg = BFA_FALSE;
                        }
 
+                       if (fcport->cfg.qos_enabled)
+                               fcport->qos_attr.state = BFA_QOS_OFFLINE;
+                       else
+                               fcport->qos_attr.state = BFA_QOS_DISABLED;
+
                        bfa_sm_send_event(fcport, BFA_FCPORT_SM_FWRSP);
                }
                break;

diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 55a9180..2109ed3 100644 (file)
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -2228,6 +2228,127 @@ bfad_iocmd_trunk_get_attr(struct bfad_s *bfad, void *cmd)
        return 0;
 }
 
+int
+bfad_iocmd_qos(struct bfad_s *bfad, void *cmd, unsigned int v_cmd)
+{
+       struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)cmd;
+       struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
+       unsigned long   flags;
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       if (bfa_ioc_get_type(&bfad->bfa.ioc) == BFA_IOC_TYPE_FC) {
+               if (v_cmd == IOCMD_QOS_ENABLE)
+                       fcport->cfg.qos_enabled = BFA_TRUE;
+               else if (v_cmd == IOCMD_QOS_DISABLE)
+                       fcport->cfg.qos_enabled = BFA_FALSE;
+       }
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+       iocmd->status = BFA_STATUS_OK;
+       return 0;
+}
+
+int
+bfad_iocmd_qos_get_attr(struct bfad_s *bfad, void *cmd)
+{
+       struct bfa_bsg_qos_attr_s *iocmd = (struct bfa_bsg_qos_attr_s *)cmd;
+       struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
+       unsigned long   flags;
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       iocmd->attr.state = fcport->qos_attr.state;
+       iocmd->attr.total_bb_cr = be32_to_cpu(fcport->qos_attr.total_bb_cr);
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+       iocmd->status = BFA_STATUS_OK;
+       return 0;
+}
+
+int
+bfad_iocmd_qos_get_vc_attr(struct bfad_s *bfad, void *cmd)
+{
+       struct bfa_bsg_qos_vc_attr_s *iocmd =
+                               (struct bfa_bsg_qos_vc_attr_s *)cmd;
+       struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
+       struct bfa_qos_vc_attr_s *bfa_vc_attr = &fcport->qos_vc_attr;
+       unsigned long   flags;
+       u32     i = 0;
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       iocmd->attr.total_vc_count = be16_to_cpu(bfa_vc_attr->total_vc_count);
+       iocmd->attr.shared_credit  = be16_to_cpu(bfa_vc_attr->shared_credit);
+       iocmd->attr.elp_opmode_flags  =
+                               be32_to_cpu(bfa_vc_attr->elp_opmode_flags);
+
+       /* Individual VC info */
+       while (i < iocmd->attr.total_vc_count) {
+               iocmd->attr.vc_info[i].vc_credit =
+                               bfa_vc_attr->vc_info[i].vc_credit;
+               iocmd->attr.vc_info[i].borrow_credit =
+                               bfa_vc_attr->vc_info[i].borrow_credit;
+               iocmd->attr.vc_info[i].priority =
+                               bfa_vc_attr->vc_info[i].priority;
+               i++;
+       }
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+
+       iocmd->status = BFA_STATUS_OK;
+       return 0;
+}
+
+int
+bfad_iocmd_qos_get_stats(struct bfad_s *bfad, void *cmd)
+{
+       struct bfa_bsg_fcport_stats_s *iocmd =
+                               (struct bfa_bsg_fcport_stats_s *)cmd;
+       struct bfad_hal_comp fcomp;
+       unsigned long   flags;
+       struct bfa_cb_pending_q_s cb_qe;
+
+       init_completion(&fcomp.comp);
+       bfa_pending_q_init(&cb_qe, (bfa_cb_cbfn_t)bfad_hcb_comp,
+                          &fcomp, &iocmd->stats);
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       WARN_ON(!bfa_ioc_get_fcmode(&bfad->bfa.ioc));
+       iocmd->status = bfa_fcport_get_stats(&bfad->bfa, &cb_qe);
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+       if (iocmd->status != BFA_STATUS_OK) {
+               bfa_trc(bfad, iocmd->status);
+               goto out;
+       }
+       wait_for_completion(&fcomp.comp);
+       iocmd->status = fcomp.status;
+out:
+       return 0;
+}
+
+int
+bfad_iocmd_qos_reset_stats(struct bfad_s *bfad, void *cmd)
+{
+       struct bfa_bsg_gen_s *iocmd = (struct bfa_bsg_gen_s *)cmd;
+       struct bfad_hal_comp fcomp;
+       unsigned long   flags;
+       struct bfa_cb_pending_q_s cb_qe;
+
+       init_completion(&fcomp.comp);
+       bfa_pending_q_init(&cb_qe, (bfa_cb_cbfn_t)bfad_hcb_comp,
+                          &fcomp, NULL);
+
+       spin_lock_irqsave(&bfad->bfad_lock, flags);
+       WARN_ON(!bfa_ioc_get_fcmode(&bfad->bfa.ioc));
+       iocmd->status = bfa_fcport_clear_stats(&bfad->bfa, &cb_qe);
+       spin_unlock_irqrestore(&bfad->bfad_lock, flags);
+       if (iocmd->status != BFA_STATUS_OK) {
+               bfa_trc(bfad, iocmd->status);
+               goto out;
+       }
+       wait_for_completion(&fcomp.comp);
+       iocmd->status = fcomp.status;
+out:
+       return 0;
+}
+
 static int
 bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
                unsigned int payload_len)
@@ -2524,6 +2645,22 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
        case IOCMD_TRUNK_GET_ATTR:
                rc = bfad_iocmd_trunk_get_attr(bfad, iocmd);
                break;
+       case IOCMD_QOS_ENABLE:
+       case IOCMD_QOS_DISABLE:
+               rc = bfad_iocmd_qos(bfad, iocmd, cmd);
+               break;
+       case IOCMD_QOS_GET_ATTR:
+               rc = bfad_iocmd_qos_get_attr(bfad, iocmd);
+               break;
+       case IOCMD_QOS_GET_VC_ATTR:
+               rc = bfad_iocmd_qos_get_vc_attr(bfad, iocmd);
+               break;
+       case IOCMD_QOS_GET_STATS:
+               rc = bfad_iocmd_qos_get_stats(bfad, iocmd);
+               break;
+       case IOCMD_QOS_RESET_STATS:
+               rc = bfad_iocmd_qos_reset_stats(bfad, iocmd);
+               break;
        default:
                rc = -EINVAL;
                break;

diff --git a/drivers/scsi/bfa/bfad_bsg.h b/drivers/scsi/bfa/bfad_bsg.h
index 2268045..3c0ce22 100644 (file)
--- a/drivers/scsi/bfa/bfad_bsg.h
+++ b/drivers/scsi/bfa/bfad_bsg.h
@@ -129,6 +129,12 @@ enum {
        IOCMD_TRUNK_ENABLE,
        IOCMD_TRUNK_DISABLE,
        IOCMD_TRUNK_GET_ATTR,
+       IOCMD_QOS_ENABLE,
+       IOCMD_QOS_DISABLE,
+       IOCMD_QOS_GET_ATTR,
+       IOCMD_QOS_GET_VC_ATTR,
+       IOCMD_QOS_GET_STATS,
+       IOCMD_QOS_RESET_STATS,
 };
 
 struct bfa_bsg_gen_s {
@@ -666,6 +672,20 @@ struct bfa_bsg_trunk_attr_s {
        struct bfa_trunk_attr_s attr;
 };
 
+struct bfa_bsg_qos_attr_s {
+       bfa_status_t    status;
+       u16             bfad_num;
+       u16             rsvd;
+       struct bfa_qos_attr_s   attr;
+};
+
+struct bfa_bsg_qos_vc_attr_s {
+       bfa_status_t    status;
+       u16             bfad_num;
+       u16             rsvd;
+       struct bfa_qos_vc_attr_s attr;
+};
+
 struct bfa_bsg_fcpt_s {
        bfa_status_t    status;
        u16             vf_id;