diff options
| author |   Quinn Tran <quinn.tran@cavium.com> | 2018-08-02 13:16:53 -0700 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-08-02 16:56:18 -0400 |
| commit | f6602f3befbb9979cdb031e32211358dd008d05e (patch) | |
| tree | 898bc878331b99585bae52af95890d92ee2a7aea /drivers/scsi/qla2xxx/qla_init.c | |
| parent | scsi: qla2xxx: Flush mailbox commands on chip reset (diff) | |
| download | linux-dev-f6602f3befbb9979cdb031e32211358dd008d05e.tar.xz linux-dev-f6602f3befbb9979cdb031e32211358dd008d05e.zip | |
scsi: qla2xxx: Fix Management Server NPort handle reservation logic
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>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_init.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index a10a8bb895e9..9d1a8b2c41a9 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -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. |