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authorChristof Schmitt <christof.schmitt@de.ibm.com>2010-09-08 14:39:56 +0200
committerJames Bottomley <James.Bottomley@suse.de>2010-09-16 22:54:18 -0400
commitf8210e34887e1feb977a9b6b8caa086855af40c9 (patch)
treeb9b2fe4f289f326334ac7327d7764f0943cc1229 /drivers/s390/scsi
parentb62a8d9b45b971a67a0f8413338c230e3117dff5 (diff)
[SCSI] zfcp: Allow midlayer to scan for LUNs when running in NPIV mode
Enable the LUN scanning mechanism in the SCSI midlayer: - Do not set the disable_target_scan bit in the FC transport class. - Set max_lun to 0xFFFFFFFF to allow the midlayer scan to include the two-level hierachical LUNs (like 0x40XX40XX00000000, but in SCSI midlayer LUN format). - Set max_id to a high value to allow triggering the SCSI device rescan from sysfs. When running in NPIV mode, zfcp accepts all LUNs in slave_attach. When running in non-NPIV mode, the list of zfcp_unit structs determines which SCSI devices are allowed on the current system. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi')
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index bc7217b88989..1e8d0cc7e1df 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -143,7 +143,8 @@ static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
if (unit)
put_device(&unit->dev);
- else {
+
+ if (!unit && !(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
put_device(&port->dev);
return -ENXIO;
}
@@ -309,8 +310,8 @@ int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
}
/* tell the SCSI stack some characteristics of this adapter */
- adapter->scsi_host->max_id = 1;
- adapter->scsi_host->max_lun = 1;
+ adapter->scsi_host->max_id = 511;
+ adapter->scsi_host->max_lun = 0xFFFFFFFF;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
@@ -687,7 +688,6 @@ struct fc_function_template zfcp_transport_functions = {
.show_host_port_type = 1,
.show_host_speed = 1,
.show_host_port_id = 1,
- .disable_target_scan = 1,
.dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
};