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path: root/drivers/scsi/storvsc_drv.c
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Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
-rw-r--r--drivers/scsi/storvsc_drv.c181
1 files changed, 134 insertions, 47 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 00bb4bdffe85..cfbb2890b31f 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -41,6 +41,7 @@
#include <scsi/scsi_eh.h>
#include <scsi/scsi_devinfo.h>
#include <scsi/scsi_dbg.h>
+#include <scsi/scsi_transport_fc.h>
/*
* All wire protocol details (storage protocol between the guest and the host)
@@ -397,6 +398,9 @@ static int storvsc_timeout = 180;
static int msft_blist_flags = BLIST_TRY_VPD_PAGES;
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+static struct scsi_transport_template *fc_transport_template;
+#endif
static void storvsc_on_channel_callback(void *context);
@@ -456,6 +460,11 @@ struct storvsc_device {
/* Used for vsc/vsp channel reset process */
struct storvsc_cmd_request init_request;
struct storvsc_cmd_request reset_request;
+ /*
+ * Currently active port and node names for FC devices.
+ */
+ u64 node_name;
+ u64 port_name;
};
struct hv_host_device {
@@ -695,7 +704,26 @@ static void handle_multichannel_storage(struct hv_device *device, int max_chns)
vmbus_are_subchannels_present(device->channel);
}
-static int storvsc_channel_init(struct hv_device *device)
+static void cache_wwn(struct storvsc_device *stor_device,
+ struct vstor_packet *vstor_packet)
+{
+ /*
+ * Cache the currently active port and node ww names.
+ */
+ if (vstor_packet->wwn_packet.primary_active) {
+ stor_device->node_name =
+ wwn_to_u64(vstor_packet->wwn_packet.primary_node_wwn);
+ stor_device->port_name =
+ wwn_to_u64(vstor_packet->wwn_packet.primary_port_wwn);
+ } else {
+ stor_device->node_name =
+ wwn_to_u64(vstor_packet->wwn_packet.secondary_node_wwn);
+ stor_device->port_name =
+ wwn_to_u64(vstor_packet->wwn_packet.secondary_port_wwn);
+ }
+}
+
+static int storvsc_channel_init(struct hv_device *device, bool is_fc)
{
struct storvsc_device *stor_device;
struct storvsc_cmd_request *request;
@@ -727,19 +755,15 @@ static int storvsc_channel_init(struct hv_device *device)
VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret != 0)
- goto cleanup;
+ return ret;
t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto cleanup;
- }
+ if (t == 0)
+ return -ETIMEDOUT;
if (vstor_packet->operation != VSTOR_OPERATION_COMPLETE_IO ||
- vstor_packet->status != 0) {
- ret = -EINVAL;
- goto cleanup;
- }
+ vstor_packet->status != 0)
+ return -EINVAL;
for (i = 0; i < ARRAY_SIZE(vmstor_protocols); i++) {
@@ -764,18 +788,14 @@ static int storvsc_channel_init(struct hv_device *device)
VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret != 0)
- goto cleanup;
+ return ret;
t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto cleanup;
- }
+ if (t == 0)
+ return -ETIMEDOUT;
- if (vstor_packet->operation != VSTOR_OPERATION_COMPLETE_IO) {
- ret = -EINVAL;
- goto cleanup;
- }
+ if (vstor_packet->operation != VSTOR_OPERATION_COMPLETE_IO)
+ return -EINVAL;
if (vstor_packet->status == 0) {
vmstor_proto_version =
@@ -791,10 +811,8 @@ static int storvsc_channel_init(struct hv_device *device)
}
}
- if (vstor_packet->status != 0) {
- ret = -EINVAL;
- goto cleanup;
- }
+ if (vstor_packet->status != 0)
+ return -EINVAL;
memset(vstor_packet, 0, sizeof(struct vstor_packet));
@@ -809,19 +827,15 @@ static int storvsc_channel_init(struct hv_device *device)
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret != 0)
- goto cleanup;
+ return ret;
t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto cleanup;
- }
+ if (t == 0)
+ return -ETIMEDOUT;
if (vstor_packet->operation != VSTOR_OPERATION_COMPLETE_IO ||
- vstor_packet->status != 0) {
- ret = -EINVAL;
- goto cleanup;
- }
+ vstor_packet->status != 0)
+ return -EINVAL;
/*
* Check to see if multi-channel support is there.
@@ -837,6 +851,38 @@ static int storvsc_channel_init(struct hv_device *device)
stor_device->max_transfer_bytes =
vstor_packet->storage_channel_properties.max_transfer_bytes;
+ if (!is_fc)
+ goto done;
+
+ memset(vstor_packet, 0, sizeof(struct vstor_packet));
+ vstor_packet->operation = VSTOR_OPERATION_FCHBA_DATA;
+ vstor_packet->flags = REQUEST_COMPLETION_FLAG;
+
+ ret = vmbus_sendpacket(device->channel, vstor_packet,
+ (sizeof(struct vstor_packet) -
+ vmscsi_size_delta),
+ (unsigned long)request,
+ VM_PKT_DATA_INBAND,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+
+ if (ret != 0)
+ return ret;
+
+ t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
+ if (t == 0)
+ return -ETIMEDOUT;
+
+ if (vstor_packet->operation != VSTOR_OPERATION_COMPLETE_IO ||
+ vstor_packet->status != 0)
+ return -EINVAL;
+
+ /*
+ * Cache the currently active port and node ww names.
+ */
+ cache_wwn(stor_device, vstor_packet);
+
+done:
+
memset(vstor_packet, 0, sizeof(struct vstor_packet));
vstor_packet->operation = VSTOR_OPERATION_END_INITIALIZATION;
vstor_packet->flags = REQUEST_COMPLETION_FLAG;
@@ -849,25 +895,19 @@ static int storvsc_channel_init(struct hv_device *device)
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret != 0)
- goto cleanup;
+ return ret;
t = wait_for_completion_timeout(&request->wait_event, 5*HZ);
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto cleanup;
- }
+ if (t == 0)
+ return -ETIMEDOUT;
if (vstor_packet->operation != VSTOR_OPERATION_COMPLETE_IO ||
- vstor_packet->status != 0) {
- ret = -EINVAL;
- goto cleanup;
- }
+ vstor_packet->status != 0)
+ return -EINVAL;
if (process_sub_channels)
handle_multichannel_storage(device, max_chns);
-
-cleanup:
return ret;
}
@@ -1076,6 +1116,14 @@ static void storvsc_on_receive(struct hv_device *device,
schedule_work(&work->work);
break;
+ case VSTOR_OPERATION_FCHBA_DATA:
+ stor_device = get_in_stor_device(device);
+ cache_wwn(stor_device, vstor_packet);
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ fc_host_node_name(stor_device->host) = stor_device->node_name;
+ fc_host_port_name(stor_device->host) = stor_device->port_name;
+#endif
+ break;
default:
break;
}
@@ -1131,7 +1179,8 @@ static void storvsc_on_channel_callback(void *context)
return;
}
-static int storvsc_connect_to_vsp(struct hv_device *device, u32 ring_size)
+static int storvsc_connect_to_vsp(struct hv_device *device, u32 ring_size,
+ bool is_fc)
{
struct vmstorage_channel_properties props;
int ret;
@@ -1148,7 +1197,7 @@ static int storvsc_connect_to_vsp(struct hv_device *device, u32 ring_size)
if (ret != 0)
return ret;
- ret = storvsc_channel_init(device);
+ ret = storvsc_channel_init(device, is_fc);
return ret;
}
@@ -1573,6 +1622,7 @@ static int storvsc_probe(struct hv_device *device,
struct Scsi_Host *host;
struct hv_host_device *host_dev;
bool dev_is_ide = ((dev_id->driver_data == IDE_GUID) ? true : false);
+ bool is_fc = ((dev_id->driver_data == SFC_GUID) ? true : false);
int target = 0;
struct storvsc_device *stor_device;
int max_luns_per_target;
@@ -1630,7 +1680,7 @@ static int storvsc_probe(struct hv_device *device,
hv_set_drvdata(device, stor_device);
stor_device->port_number = host->host_no;
- ret = storvsc_connect_to_vsp(device, storvsc_ringbuffer_size);
+ ret = storvsc_connect_to_vsp(device, storvsc_ringbuffer_size, is_fc);
if (ret)
goto err_out1;
@@ -1642,6 +1692,9 @@ static int storvsc_probe(struct hv_device *device,
host->max_lun = STORVSC_FC_MAX_LUNS_PER_TARGET;
host->max_id = STORVSC_FC_MAX_TARGETS;
host->max_channel = STORVSC_FC_MAX_CHANNELS - 1;
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ host->transportt = fc_transport_template;
+#endif
break;
case SCSI_GUID:
@@ -1681,6 +1734,12 @@ static int storvsc_probe(struct hv_device *device,
goto err_out2;
}
}
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ if (host->transportt == fc_transport_template) {
+ fc_host_node_name(host) = stor_device->node_name;
+ fc_host_port_name(host) = stor_device->port_name;
+ }
+#endif
return 0;
err_out2:
@@ -1706,6 +1765,10 @@ static int storvsc_remove(struct hv_device *dev)
struct storvsc_device *stor_device = hv_get_drvdata(dev);
struct Scsi_Host *host = stor_device->host;
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ if (host->transportt == fc_transport_template)
+ fc_remove_host(host);
+#endif
scsi_remove_host(host);
storvsc_dev_remove(dev);
scsi_host_put(host);
@@ -1720,8 +1783,16 @@ static struct hv_driver storvsc_drv = {
.remove = storvsc_remove,
};
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+static struct fc_function_template fc_transport_functions = {
+ .show_host_node_name = 1,
+ .show_host_port_name = 1,
+};
+#endif
+
static int __init storvsc_drv_init(void)
{
+ int ret;
/*
* Divide the ring buffer data size (which is 1 page less
@@ -1736,12 +1807,28 @@ static int __init storvsc_drv_init(void)
vmscsi_size_delta,
sizeof(u64)));
- return vmbus_driver_register(&storvsc_drv);
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ fc_transport_template = fc_attach_transport(&fc_transport_functions);
+ if (!fc_transport_template)
+ return -ENODEV;
+#endif
+
+ ret = vmbus_driver_register(&storvsc_drv);
+
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ if (ret)
+ fc_release_transport(fc_transport_template);
+#endif
+
+ return ret;
}
static void __exit storvsc_drv_exit(void)
{
vmbus_driver_unregister(&storvsc_drv);
+#if IS_ENABLED(CONFIG_SCSI_FC_ATTRS)
+ fc_release_transport(fc_transport_template);
+#endif
}
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-10-01 04:24:20 +0000