diff options
author | Cathy Avery <cavery@redhat.com> | 2017-04-17 14:37:46 -0400 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-04-19 19:14:14 -0400 |
commit | daf0cd445a218314f9461d67d4f2b9c24cdd534b (patch) | |
tree | 5ccdd2d32ded15a00834487ddf696acc419c175a /drivers/scsi/storvsc_drv.c | |
parent | 0c3ae2664766ec892992a686e48ead94784ef54c (diff) | |
download | linux-daf0cd445a218314f9461d67d4f2b9c24cdd534b.tar.gz linux-daf0cd445a218314f9461d67d4f2b9c24cdd534b.tar.bz2 linux-daf0cd445a218314f9461d67d4f2b9c24cdd534b.zip |
scsi: storvsc: Add support for FC rport.
Included in the current storvsc driver for Hyper-V is the ability to
access luns on an FC fabric via a virtualized fiber channel adapter
exposed by the Hyper-V host. The driver also attaches to the FC
transport to allow host and port names to be published under
/sys/class/fc_host/hostX. Current customer tools running on the VM
require that these names be available in the well known standard
location under fc_host/hostX.
This patch stubs in an rport per fc_host and sets its rport role as
FC_PORT_ROLE_FCP_DUMMY_INITIATOR to indicate to the fc_transport that it
is a pseudo rport in order to scan the scsi stack via echo "- - -" >
/sys/class/scsi_host/hostX/scan.
Signed-off-by: Cathy Avery <cavery@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
-rw-r--r-- | drivers/scsi/storvsc_drv.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 538f3e131275..b2183415b9ee 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -478,6 +478,9 @@ struct storvsc_device { */ u64 node_name; u64 port_name; +#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS) + struct fc_rport *rport; +#endif }; struct hv_host_device { @@ -1814,19 +1817,27 @@ static int storvsc_probe(struct hv_device *device, target = (device->dev_instance.b[5] << 8 | device->dev_instance.b[4]); ret = scsi_add_device(host, 0, target, 0); - if (ret) { - scsi_remove_host(host); - goto err_out2; - } + if (ret) + goto err_out3; } #if IS_ENABLED(CONFIG_SCSI_FC_ATTRS) if (host->transportt == fc_transport_template) { + struct fc_rport_identifiers ids = { + .roles = FC_PORT_ROLE_FCP_DUMMY_INITIATOR, + }; + fc_host_node_name(host) = stor_device->node_name; fc_host_port_name(host) = stor_device->port_name; + stor_device->rport = fc_remote_port_add(host, 0, &ids); + if (!stor_device->rport) + goto err_out3; } #endif return 0; +err_out3: + scsi_remove_host(host); + err_out2: /* * Once we have connected with the host, we would need to @@ -1852,8 +1863,10 @@ static int storvsc_remove(struct hv_device *dev) struct Scsi_Host *host = stor_device->host; #if IS_ENABLED(CONFIG_SCSI_FC_ATTRS) - if (host->transportt == fc_transport_template) + if (host->transportt == fc_transport_template) { + fc_remote_port_delete(stor_device->rport); fc_remove_host(host); + } #endif scsi_remove_host(host); storvsc_dev_remove(dev); |