* [PATCH v3 0/2] scsi: storvsc: Add support for FC rport
@ 2017-04-17 18:37 Cathy Avery
2017-04-17 18:37 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
` (2 more replies)
0 siblings, 3 replies; 7+ messages in thread
From: Cathy Avery @ 2017-04-17 18:37 UTC (permalink / raw)
To: kys, jejb, martin.petersen, hch
Cc: sthemmin, haiyangz, devel, linux-kernel, linux-scsi
The updated patch set provides a way for drivers ( specifically
storvsc in this case ) that expose virturalized fc devices
but that do not expose rports to be manually scanned. This is
done via creating a pseudo rport in storvsc and a
corresponding dummy initiator rport role in the fc transport.
Changes since v2:
- Additional patch adding FC_PORT_ROLE_FCP_DUMMY_INITIATOR role
to fc_transport
- Changed storvsc rport role to FC_PORT_ROLE_FCP_DUMMY_INITIATOR
Changes since v1:
- Fix fc_rport_identifiers init [Stephen Hemminger]
- Better error checking
Cathy Avery (2):
scsi: scsi_transport_fc: Add dummy initiator role to rport
scsi: storvsc: Add support for FC rport.
drivers/scsi/scsi_transport_fc.c | 10 ++++++----
drivers/scsi/storvsc_drv.c | 23 ++++++++++++++++++-----
include/scsi/scsi_transport_fc.h | 1 +
3 files changed, 25 insertions(+), 9 deletions(-)
--
2.5.0
^ permalink raw reply [flat|nested] 7+ messages in thread* [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport
2017-04-17 18:37 [PATCH v3 0/2] scsi: storvsc: Add support for FC rport Cathy Avery
@ 2017-04-17 18:37 ` Cathy Avery
2017-04-19 6:46 ` Christoph Hellwig
2017-04-17 18:37 ` [PATCH v3 2/2] scsi: storvsc: Add support for FC rport Cathy Avery
2017-04-19 23:14 ` [PATCH v3 0/2] " Martin K. Petersen
2 siblings, 1 reply; 7+ messages in thread
From: Cathy Avery @ 2017-04-17 18:37 UTC (permalink / raw)
To: kys, jejb, martin.petersen, hch
Cc: sthemmin, haiyangz, devel, linux-kernel, linux-scsi
This patch allows scsi drivers that expose virturalized fibre channel
devices but that do not expose rports to successfully rescan the scsi
bus via echo "- - -" > /sys/class/scsi_host/hostX/scan.
Drivers can create a pseudo rport and indicate
FC_PORT_ROLE_FCP_DUMMY_INITIATOR as the rport's role in
fc_rport_identifiers. This insures that a valid scsi_target_id
is assigned to the newly created rport and it can meet the
requirements of fc_user_scan_tgt calling scsi_scan_target.
Signed-off-by: Cathy Avery <cavery@redhat.com>
---
drivers/scsi/scsi_transport_fc.c | 10 ++++++----
include/scsi/scsi_transport_fc.h | 1 +
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 2d753c9..de85602 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -289,9 +289,10 @@ static const struct {
u32 value;
char *name;
} fc_port_role_names[] = {
- { FC_PORT_ROLE_FCP_TARGET, "FCP Target" },
- { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" },
- { FC_PORT_ROLE_IP_PORT, "IP Port" },
+ { FC_PORT_ROLE_FCP_TARGET, "FCP Target" },
+ { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" },
+ { FC_PORT_ROLE_IP_PORT, "IP Port" },
+ { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" },
};
fc_bitfield_name_search(port_roles, fc_port_role_names)
@@ -2628,7 +2629,8 @@ fc_remote_port_create(struct Scsi_Host *shost, int channel,
spin_lock_irqsave(shost->host_lock, flags);
rport->number = fc_host->next_rport_number++;
- if (rport->roles & FC_PORT_ROLE_FCP_TARGET)
+ if ((rport->roles & FC_PORT_ROLE_FCP_TARGET) ||
+ (rport->roles & FC_PORT_ROLE_FCP_DUMMY_INITIATOR))
rport->scsi_target_id = fc_host->next_target_id++;
else
rport->scsi_target_id = -1;
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index b21b8aa5..6e208bb 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -162,6 +162,7 @@ enum fc_tgtid_binding_type {
#define FC_PORT_ROLE_FCP_TARGET 0x01
#define FC_PORT_ROLE_FCP_INITIATOR 0x02
#define FC_PORT_ROLE_IP_PORT 0x04
+#define FC_PORT_ROLE_FCP_DUMMY_INITIATOR 0x08
/* The following are for compatibility */
#define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN
--
2.5.0
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport
2017-04-17 18:37 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
@ 2017-04-19 6:46 ` Christoph Hellwig
0 siblings, 0 replies; 7+ messages in thread
From: Christoph Hellwig @ 2017-04-19 6:46 UTC (permalink / raw)
To: Cathy Avery
Cc: kys, jejb, martin.petersen, hch, sthemmin, haiyangz, devel,
linux-kernel, linux-scsi
Looks good,
Reviewed-by: Christoph Hellwig <hch@lst.de>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v3 2/2] scsi: storvsc: Add support for FC rport.
2017-04-17 18:37 [PATCH v3 0/2] scsi: storvsc: Add support for FC rport Cathy Avery
2017-04-17 18:37 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
@ 2017-04-17 18:37 ` Cathy Avery
2017-04-19 6:47 ` Christoph Hellwig
2017-04-19 23:14 ` [PATCH v3 0/2] " Martin K. Petersen
2 siblings, 1 reply; 7+ messages in thread
From: Cathy Avery @ 2017-04-17 18:37 UTC (permalink / raw)
To: kys, jejb, martin.petersen, hch
Cc: sthemmin, haiyangz, devel, linux-kernel, linux-scsi
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>
---
drivers/scsi/storvsc_drv.c | 23 ++++++++++++++++++-----
1 file changed, 18 insertions(+), 5 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 016639d..1ec8579 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -476,6 +476,9 @@ 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 {
@@ -1823,19 +1826,27 @@ 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
@@ -1861,8 +1872,10 @@ 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);
--
2.5.0
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v3 2/2] scsi: storvsc: Add support for FC rport.
2017-04-17 18:37 ` [PATCH v3 2/2] scsi: storvsc: Add support for FC rport Cathy Avery
@ 2017-04-19 6:47 ` Christoph Hellwig
0 siblings, 0 replies; 7+ messages in thread
From: Christoph Hellwig @ 2017-04-19 6:47 UTC (permalink / raw)
To: Cathy Avery
Cc: kys, jejb, martin.petersen, hch, sthemmin, haiyangz, devel,
linux-kernel, linux-scsi
Looks good,
Reviewed-by: Christoph Hellwig <hch@lst.de>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v3 0/2] scsi: storvsc: Add support for FC rport
2017-04-17 18:37 [PATCH v3 0/2] scsi: storvsc: Add support for FC rport Cathy Avery
2017-04-17 18:37 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
2017-04-17 18:37 ` [PATCH v3 2/2] scsi: storvsc: Add support for FC rport Cathy Avery
@ 2017-04-19 23:14 ` Martin K. Petersen
2 siblings, 0 replies; 7+ messages in thread
From: Martin K. Petersen @ 2017-04-19 23:14 UTC (permalink / raw)
To: Cathy Avery
Cc: kys, jejb, martin.petersen, hch, sthemmin, haiyangz, devel,
linux-kernel, linux-scsi
Cathy,
> The updated patch set provides a way for drivers ( specifically
> storvsc in this case ) that expose virturalized fc devices
> but that do not expose rports to be manually scanned. This is
> done via creating a pseudo rport in storvsc and a
> corresponding dummy initiator rport role in the fc transport.
Applied to 4.12/scsi-queue, thanks!
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v3 0/2] scsi: storvsc: Add support for FC rport
@ 2017-04-05 18:45 Cathy Avery
2017-04-05 18:45 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
0 siblings, 1 reply; 7+ messages in thread
From: Cathy Avery @ 2017-04-05 18:45 UTC (permalink / raw)
To: kys, hch, haiyangz, jejb, martin.petersen
Cc: stephen, dan.carpenter, devel, linux-kernel, linux-scsi
The updated patch set provides a way for drivers ( specifically
storvsc in this case ) that expose virturalized fc devices
but that do not expose rports to be manually scanned. This is
done via creating a pseudo rport in storvsc and a
corresponding dummy initiator rport role in the fc transport.
Changes since v2:
- Additional patch adding FC_PORT_ROLE_FCP_DUMMY_INITIATOR role
to fc_transport
- Changed storvsc rport role to FC_PORT_ROLE_FCP_DUMMY_INITIATOR
Changes since v1:
- Fix fc_rport_identifiers init [Stephen Hemminger]
- Better error checking
Cathy Avery (2):
scsi: scsi_transport_fc: Add dummy initiator role to rport
scsi: storvsc: Add support for FC rport.
drivers/scsi/scsi_transport_fc.c | 10 ++++++----
drivers/scsi/storvsc_drv.c | 23 ++++++++++++++++++-----
include/scsi/scsi_transport_fc.h | 1 +
3 files changed, 25 insertions(+), 9 deletions(-)
--
2.5.0
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport
2017-04-05 18:45 Cathy Avery
@ 2017-04-05 18:45 ` Cathy Avery
0 siblings, 0 replies; 7+ messages in thread
From: Cathy Avery @ 2017-04-05 18:45 UTC (permalink / raw)
To: kys, hch, haiyangz, jejb, martin.petersen
Cc: stephen, dan.carpenter, devel, linux-kernel, linux-scsi
This patch allows scsi drivers that expose virturalized fibre channel
devices but that do not expose rports to successfully rescan the scsi
bus via echo "- - -" > /sys/class/scsi_host/hostX/scan.
Drivers can create a pseudo rport and indicate
FC_PORT_ROLE_FCP_DUMMY_INITIATOR as the rport's role in
fc_rport_identifiers. This insures that a valid scsi_target_id
is assigned to the newly created rport and it can meet the
requirements of fc_user_scan_tgt calling scsi_scan_target.
Signed-off-by: Cathy Avery <cavery@redhat.com>
---
drivers/scsi/scsi_transport_fc.c | 10 ++++++----
include/scsi/scsi_transport_fc.h | 1 +
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 2d753c9..de85602 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -289,9 +289,10 @@ static const struct {
u32 value;
char *name;
} fc_port_role_names[] = {
- { FC_PORT_ROLE_FCP_TARGET, "FCP Target" },
- { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" },
- { FC_PORT_ROLE_IP_PORT, "IP Port" },
+ { FC_PORT_ROLE_FCP_TARGET, "FCP Target" },
+ { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" },
+ { FC_PORT_ROLE_IP_PORT, "IP Port" },
+ { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" },
};
fc_bitfield_name_search(port_roles, fc_port_role_names)
@@ -2628,7 +2629,8 @@ fc_remote_port_create(struct Scsi_Host *shost, int channel,
spin_lock_irqsave(shost->host_lock, flags);
rport->number = fc_host->next_rport_number++;
- if (rport->roles & FC_PORT_ROLE_FCP_TARGET)
+ if ((rport->roles & FC_PORT_ROLE_FCP_TARGET) ||
+ (rport->roles & FC_PORT_ROLE_FCP_DUMMY_INITIATOR))
rport->scsi_target_id = fc_host->next_target_id++;
else
rport->scsi_target_id = -1;
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index b21b8aa5..6e208bb 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -162,6 +162,7 @@ enum fc_tgtid_binding_type {
#define FC_PORT_ROLE_FCP_TARGET 0x01
#define FC_PORT_ROLE_FCP_INITIATOR 0x02
#define FC_PORT_ROLE_IP_PORT 0x04
+#define FC_PORT_ROLE_FCP_DUMMY_INITIATOR 0x08
/* The following are for compatibility */
#define FC_RPORT_ROLE_UNKNOWN FC_PORT_ROLE_UNKNOWN
--
2.5.0
^ permalink raw reply related [flat|nested] 7+ messages in thread
end of thread, other threads:[~2017-04-19 23:15 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2017-04-17 18:37 [PATCH v3 0/2] scsi: storvsc: Add support for FC rport Cathy Avery
2017-04-17 18:37 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
2017-04-19 6:46 ` Christoph Hellwig
2017-04-17 18:37 ` [PATCH v3 2/2] scsi: storvsc: Add support for FC rport Cathy Avery
2017-04-19 6:47 ` Christoph Hellwig
2017-04-19 23:14 ` [PATCH v3 0/2] " Martin K. Petersen
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2017-04-05 18:45 ` [PATCH v3 1/2] scsi: scsi_transport_fc: Add dummy initiator role to rport Cathy Avery
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