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Commit 3ec4f2c8 authored by Krishna Gudipati's avatar Krishna Gudipati Committed by James Bottomley
Browse files

[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: default avatarKrishna Gudipati <kgudipat@brocade.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 45191236

drivers/scsi/bfa/bfa_defs_svc.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */

};

drivers/scsi/bfa/bfa_svc.c

+10 −0
Original line number Diff line number Diff line
@@ -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;

drivers/scsi/bfa/bfad_bsg.c

+137 −0
Original line number Diff line number Diff line
@@ -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;

drivers/scsi/bfa/bfad_bsg.h

+20 −0
Original line number Diff line number Diff line
@@ -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;