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[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>
This commit is contained in:
Krishna Gudipati 2012-09-21 17:26:31 -07:00 committed by James Bottomley
parent 04ea657562
commit 6894f013a7
6 changed files with 94 additions and 6 deletions
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2
drivers/scsi/bfa/bfa_defs.h
View File

@ -190,6 +190,8 @@ enum bfa_status {
BFA_STATUS_TOPOLOGY_LOOP = 230, /* Topology is set to Loop */
BFA_STATUS_LOOP_UNSUPP_MEZZ = 231, /* Loop topology is not supported
* on mezz cards */
BFA_STATUS_QOS_BW_INVALID = 234, /* Invalid QOS bandwidth
* configuration */
BFA_STATUS_DPORT_ENABLED = 235, /* D-port mode is already enabled */
BFA_STATUS_DPORT_DISABLED = 236, /* D-port mode is already disabled */
BFA_STATUS_CMD_NOTSUPP_MEZZ = 239, /* Cmd not supported for MEZZ card */

15
drivers/scsi/bfa/bfa_defs_svc.h
View File

@ -522,6 +522,14 @@ enum bfa_qos_bw_alloc {
BFA_QOS_BW_LOW = 10, /* bandwidth allocation for Low */
};
#pragma pack(1)
struct bfa_qos_bw_s {
u8 qos_bw_set;
u8 high;
u8 med;
u8 low;
};
/*
* QoS attribute returned in QoS Query
*/
@ -529,7 +537,8 @@ struct bfa_qos_attr_s {
u8 state; /* QoS current state */
u8 rsvd1[3];
u32 total_bb_cr; /* Total BB Credits */
u32 rsvd2[2];
struct bfa_qos_bw_s qos_bw; /* QOS bw cfg */
struct bfa_qos_bw_s qos_bw_op; /* QOS bw operational */
};
/*
@ -887,7 +896,7 @@ struct bfa_port_cfg_s {
u8 rsvd1;
u16 path_tov; /* device path timeout */
u16 q_depth; /* SCSI Queue depth */
u32 rsvd2;
struct bfa_qos_bw_s qos_bw; /* QOS bandwidth */
};
#pragma pack()
@ -935,7 +944,7 @@ struct bfa_port_attr_s {
/* FCoE specific */
u16 fcoe_vlan;
u8 rsvd1[2];
u8 rsvd1[6];
};
/*

46
drivers/scsi/bfa/bfa_svc.c
View File

@ -3067,6 +3067,7 @@ bfa_fcport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
*/
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 @@ bfa_fcport_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
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 @@ bfa_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
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 @@ bfa_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
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 @@ bfa_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
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_fcport_isr(struct bfa_s *bfa, struct bfi_msg_s *msg)
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 @@ bfa_fcport_get_stats(struct bfa_s *bfa, struct bfa_cb_pending_q_s *cb)
{
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 @@ bfa_fcport_clear_stats(struct bfa_s *bfa, struct bfa_cb_pending_q_s *cb)
{
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_fcport_is_dport(struct bfa_s *bfa)
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)
{

3
drivers/scsi/bfa/bfa_svc.h
View File

@ -514,6 +514,7 @@ struct bfa_fcport_s {
struct bfa_fcport_trunk_s trunk;
u16 fcoe_vlan;
struct bfa_mem_dma_s fcport_dma;
bfa_boolean_t stats_dma_ready;
};
#define BFA_FCPORT_MOD(__bfa) (&(__bfa)->modules.fcport)
@ -551,6 +552,8 @@ void bfa_fcport_event_register(struct bfa_s *bfa,
enum bfa_port_linkstate event), void *event_cbarg);
bfa_boolean_t bfa_fcport_is_disabled(struct bfa_s *bfa);
bfa_boolean_t bfa_fcport_is_dport(struct bfa_s *bfa);
bfa_status_t bfa_fcport_set_qos_bw(struct bfa_s *bfa,
struct bfa_qos_bw_s *qos_bw);
enum bfa_port_speed bfa_fcport_get_ratelim_speed(struct bfa_s *bfa);
void bfa_fcport_set_tx_bbcredit(struct bfa_s *bfa, u16 tx_bbcredit, u8 bb_scn);

26
drivers/scsi/bfa/bfad_bsg.c
View File

@ -879,6 +879,19 @@ out:
return 0;
}
int
bfad_iocmd_qos_set_bw(struct bfad_s *bfad, void *pcmd)
{
struct bfa_bsg_qos_bw_s *iocmd = (struct bfa_bsg_qos_bw_s *)pcmd;
unsigned long flags;
spin_lock_irqsave(&bfad->bfad_lock, flags);
iocmd->status = bfa_fcport_set_qos_bw(&bfad->bfa, &iocmd->qos_bw);
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
return 0;
}
int
bfad_iocmd_ratelim(struct bfad_s *bfad, unsigned int cmd, void *pcmd)
{
@ -2284,8 +2297,12 @@ bfad_iocmd_qos(struct bfad_s *bfad, void *cmd, unsigned int v_cmd)
else {
if (v_cmd == IOCMD_QOS_ENABLE)
fcport->cfg.qos_enabled = BFA_TRUE;
else if (v_cmd == IOCMD_QOS_DISABLE)
else if (v_cmd == IOCMD_QOS_DISABLE) {
fcport->cfg.qos_enabled = BFA_FALSE;
fcport->cfg.qos_bw.high = BFA_QOS_BW_HIGH;
fcport->cfg.qos_bw.med = BFA_QOS_BW_MED;
fcport->cfg.qos_bw.low = BFA_QOS_BW_LOW;
}
}
}
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
@ -2308,6 +2325,10 @@ bfad_iocmd_qos_get_attr(struct bfad_s *bfad, void *cmd)
iocmd->attr.state = fcport->qos_attr.state;
iocmd->attr.total_bb_cr =
be32_to_cpu(fcport->qos_attr.total_bb_cr);
iocmd->attr.qos_bw.high = fcport->cfg.qos_bw.high;
iocmd->attr.qos_bw.med = fcport->cfg.qos_bw.med;
iocmd->attr.qos_bw.low = fcport->cfg.qos_bw.low;
iocmd->attr.qos_bw_op = fcport->qos_attr.qos_bw_op;
iocmd->status = BFA_STATUS_OK;
}
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
@ -2839,6 +2860,9 @@ bfad_iocmd_handler(struct bfad_s *bfad, unsigned int cmd, void *iocmd,
case IOCMD_QOS_RESET_STATS:
rc = bfad_iocmd_qos_reset_stats(bfad, iocmd);
break;
case IOCMD_QOS_SET_BW:
rc = bfad_iocmd_qos_set_bw(bfad, iocmd);
break;
case IOCMD_VF_GET_STATS:
rc = bfad_iocmd_vf_get_stats(bfad, iocmd);
break;

8
drivers/scsi/bfa/bfad_bsg.h
View File

@ -144,6 +144,7 @@ enum {
IOCMD_DIAG_DPORT_ENABLE,
IOCMD_DIAG_DPORT_DISABLE,
IOCMD_DIAG_DPORT_GET_STATE,
IOCMD_QOS_SET_BW,
};
struct bfa_bsg_gen_s {
@ -704,6 +705,13 @@ struct bfa_bsg_qos_vc_attr_s {
struct bfa_qos_vc_attr_s attr;
};
struct bfa_bsg_qos_bw_s {
bfa_status_t status;
u16 bfad_num;
u16 rsvd;
struct bfa_qos_bw_s qos_bw;
};
struct bfa_bsg_vf_stats_s {
bfa_status_t status;
u16 bfad_num;