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scsi: qla2xxx: Fix Management Server NPort handle reservation logic

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After selecting the NPort handle/loop_id, set a bit in the loop_id_map to
prevent others from selecting the same NPort handle.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Quinn Tran 2018-08-02 13:16:53 -07:00 committed by Martin K. Petersen
parent b2000805a9
commit f6602f3bef
4 changed files with 32 additions and 2 deletions
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1
drivers/scsi/qla2xxx/qla_gbl.h
View file

@ -118,6 +118,7 @@ extern int qla2x00_post_async_prlo_done_work(struct scsi_qla_host *,
fc_port_t *, uint16_t *);
int qla_post_iidma_work(struct scsi_qla_host *vha, fc_port_t *fcport);
void qla_do_iidma_work(struct scsi_qla_host *vha, fc_port_t *fcport);
int qla2x00_reserve_mgmt_server_loop_id(scsi_qla_host_t *);
/*
* Global Data in qla_os.c source file.
*/

28
drivers/scsi/qla2xxx/qla_init.c
View file

@ -5616,6 +5616,34 @@ qla2x00_find_new_loop_id(scsi_qla_host_t *vha, fc_port_t *dev)
}
/* FW does not set aside Loop id for MGMT Server/FFFFFAh */
int
qla2x00_reserve_mgmt_server_loop_id(scsi_qla_host_t *vha)
{
int loop_id = FC_NO_LOOP_ID;
int lid = NPH_MGMT_SERVER - vha->vp_idx;
unsigned long flags;
struct qla_hw_data *ha = vha->hw;
if (vha->vp_idx == 0) {
set_bit(NPH_MGMT_SERVER, ha->loop_id_map);
return NPH_MGMT_SERVER;
}
/* pick id from high and work down to low */
spin_lock_irqsave(&ha->vport_slock, flags);
for (; lid > 0; lid--) {
if (!test_bit(lid, vha->hw->loop_id_map)) {
set_bit(lid, vha->hw->loop_id_map);
loop_id = lid;
break;
}
}
spin_unlock_irqrestore(&ha->vport_slock, flags);
return loop_id;
}
/*
* qla2x00_fabric_login
* Issue fabric login command.

2
drivers/scsi/qla2xxx/qla_mid.c
View file

@ -485,7 +485,7 @@ qla24xx_create_vhost(struct fc_vport *fc_vport)
"Couldn't allocate vp_id.\n");
goto create_vhost_failed;
}
vha->mgmt_svr_loop_id = NPH_MGMT_SERVER;
vha->mgmt_svr_loop_id = qla2x00_reserve_mgmt_server_loop_id(vha);
vha->dpc_flags = 0L;

3
drivers/scsi/qla2xxx/qla_os.c
View file

@ -3048,7 +3048,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
host = base_vha->host;
base_vha->req = req;
if (IS_QLA2XXX_MIDTYPE(ha))
base_vha->mgmt_svr_loop_id = NPH_MGMT_SERVER;
base_vha->mgmt_svr_loop_id =
qla2x00_reserve_mgmt_server_loop_id(base_vha);
else
base_vha->mgmt_svr_loop_id = MANAGEMENT_SERVER +
base_vha->vp_idx;