[SCSI] bfa: Add support for user to configure bandwidth on QoS priorities
Made changes to provide an option for user to configure the
bandwidth percentage for High/Medium/Low QoS priorities.
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@brocade.com>
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c
index 309ab2a..299c1c8 100644
--- a/drivers/scsi/bfa/bfa_svc.c
+++ b/drivers/scsi/bfa/bfa_svc.c
@@ -3067,6 +3067,7 @@
*/
do_gettimeofday(&tv);
fcport->stats_reset_time = tv.tv_sec;
+ fcport->stats_dma_ready = BFA_FALSE;
/*
* initialize and set default configuration
@@ -3077,6 +3078,9 @@
port_cfg->maxfrsize = 0;
port_cfg->trl_def_speed = BFA_PORT_SPEED_1GBPS;
+ port_cfg->qos_bw.high = BFA_QOS_BW_HIGH;
+ port_cfg->qos_bw.med = BFA_QOS_BW_MED;
+ port_cfg->qos_bw.low = BFA_QOS_BW_LOW;
INIT_LIST_HEAD(&fcport->stats_pending_q);
INIT_LIST_HEAD(&fcport->statsclr_pending_q);
@@ -3596,6 +3600,7 @@
case BFI_FCPORT_I2H_ENABLE_RSP:
if (fcport->msgtag == i2hmsg.penable_rsp->msgtag) {
+ fcport->stats_dma_ready = BFA_TRUE;
if (fcport->use_flash_cfg) {
fcport->cfg = i2hmsg.penable_rsp->port_cfg;
fcport->cfg.maxfrsize =
@@ -3611,6 +3616,8 @@
else
fcport->trunk.attr.state =
BFA_TRUNK_DISABLED;
+ fcport->qos_attr.qos_bw =
+ i2hmsg.penable_rsp->port_cfg.qos_bw;
fcport->use_flash_cfg = BFA_FALSE;
}
@@ -3619,6 +3626,9 @@
else
fcport->qos_attr.state = BFA_QOS_DISABLED;
+ fcport->qos_attr.qos_bw_op =
+ i2hmsg.penable_rsp->port_cfg.qos_bw;
+
bfa_sm_send_event(fcport, BFA_FCPORT_SM_FWRSP);
}
break;
@@ -3640,6 +3650,8 @@
bfa_sm_send_event(fcport,
BFA_FCPORT_SM_LINKDOWN);
}
+ fcport->qos_attr.qos_bw_op =
+ i2hmsg.event->link_state.qos_attr.qos_bw_op;
break;
case BFI_FCPORT_I2H_TRUNK_SCN:
@@ -4035,8 +4047,9 @@
{
struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
- if (bfa_ioc_is_disabled(&bfa->ioc))
- return BFA_STATUS_IOC_DISABLED;
+ if (!bfa_iocfc_is_operational(bfa) ||
+ !fcport->stats_dma_ready)
+ return BFA_STATUS_IOC_NON_OP;
if (!list_empty(&fcport->statsclr_pending_q))
return BFA_STATUS_DEVBUSY;
@@ -4061,6 +4074,10 @@
{
struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
+ if (!bfa_iocfc_is_operational(bfa) ||
+ !fcport->stats_dma_ready)
+ return BFA_STATUS_IOC_NON_OP;
+
if (!list_empty(&fcport->stats_pending_q))
return BFA_STATUS_DEVBUSY;
@@ -4098,6 +4115,31 @@
BFA_PORT_ST_DPORT);
}
+bfa_status_t
+bfa_fcport_set_qos_bw(struct bfa_s *bfa, struct bfa_qos_bw_s *qos_bw)
+{
+ struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(bfa);
+ enum bfa_ioc_type_e ioc_type = bfa_get_type(bfa);
+
+ bfa_trc(bfa, ioc_type);
+
+ if ((qos_bw->high == 0) || (qos_bw->med == 0) || (qos_bw->low == 0))
+ return BFA_STATUS_QOS_BW_INVALID;
+
+ if ((qos_bw->high + qos_bw->med + qos_bw->low) != 100)
+ return BFA_STATUS_QOS_BW_INVALID;
+
+ if ((qos_bw->med > qos_bw->high) || (qos_bw->low > qos_bw->med) ||
+ (qos_bw->low > qos_bw->high))
+ return BFA_STATUS_QOS_BW_INVALID;
+
+ if ((ioc_type == BFA_IOC_TYPE_FC) &&
+ (fcport->cfg.topology != BFA_PORT_TOPOLOGY_LOOP))
+ fcport->cfg.qos_bw = *qos_bw;
+
+ return BFA_STATUS_OK;
+}
+
bfa_boolean_t
bfa_fcport_is_ratelim(struct bfa_s *bfa)
{