[libvirt] [PATCH] npiv: Expose fabric_name outside
Daniel P. Berrange
berrange at redhat.com
Tue Dec 6 21:05:34 UTC 2011
On Tue, Dec 06, 2011 at 08:42:18PM +0800, Osier Yang wrote:
> This patch is to expose the fabric_name of fc_host class, which
> might be useful for users who wants to known which fabric the
> (v)HBA connects to.
>
> The patch also adds the missed capabilities' XML schema of scsi_host,
> (of course, with fabric_wwn added), and update the documents
> (docs/formatnode.html.in)
> ---
> docs/formatnode.html.in | 7 +++++
> docs/schemas/nodedev.rng | 40 +++++++++++++++++++++++++++++
> src/conf/node_device_conf.c | 3 ++
> src/conf/node_device_conf.h | 1 +
> src/node_device/node_device_linux_sysfs.c | 10 +++++++
> 5 files changed, 61 insertions(+), 0 deletions(-)
>
> diff --git a/docs/formatnode.html.in b/docs/formatnode.html.in
> index 126f8de..c04d04d 100644
> --- a/docs/formatnode.html.in
> +++ b/docs/formatnode.html.in
> @@ -126,6 +126,7 @@
> <dd>A network protocol exposed by the device, where the
> attribute <code>type</code> can be "80203" for IEEE
> 802.3, or "80211" for various flavors of IEEE 802.11.
> + </dd>
> </dl>
> </dd>
> <dt><code>scsi_host</code></dt>
> @@ -133,6 +134,12 @@
> <dl>
> <dt><code>host</code></dt>
> <dd>The SCSI host number.</dd>
> + <dt><code>capability</code></dt>
> + <dd>Current capabilities include "vports_ops" (indicates
> + vport operations are supported) and "fc_host", the later
> + implies following sub-elements: <code>wwnn</code>,
> + <code>wwpn</code>, <code>fabric_wwn</code>.
> + </dd>
> </dl>
> </dd>
> <dt><code>scsi</code></dt>
> diff --git a/docs/schemas/nodedev.rng b/docs/schemas/nodedev.rng
> index 55191d9..1b9a2d1 100644
> --- a/docs/schemas/nodedev.rng
> +++ b/docs/schemas/nodedev.rng
> @@ -216,6 +216,35 @@
> </attribute>
> </define>
>
> + <define name='wwn'>
> + <data type='string'>
> + <param name='pattern'>(0-9a-fA-F){16}</param>
> + </data>
> + </define>
> +
> + <define name='capsfchost'>
> + <attribute name='type'>
> + <value>fc_host</value>
> + </attribute>
> +
> + <element name='wwnn'>
> + <ref name='wwn'/>
> + </element>
> +
> + <element name='wwpn'>
> + <ref name='wwn'/>
> + </element>
> +
> + <element name='fabric_wwn'>
> + <ref name='wwn'/>
> + </element>
> + </define>
> +
> + <define name='capsvports'>
> + <attribute name='type'>
> + <value>vports_ops</value>
> + </attribute>
> + </define>
>
> <define name='capscsihost'>
> <attribute name='type'>
> @@ -225,6 +254,17 @@
> <element name='host'>
> <ref name='uint'/>
> </element>
> +
> + <optional>
> + <zeroOrMore>
> + <element name='capability'>
> + <choice>
> + <ref name='capsfchost'/>
> + <ref name='capsvports'/>
> + </choice>
> + </element>
> + </zeroOrMore>
> + </optional>
> </define>
>
> <define name='capscsi'>
> diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
> index 9d48ff8..ea6ebde 100644
> --- a/src/conf/node_device_conf.c
> +++ b/src/conf/node_device_conf.c
> @@ -389,6 +389,8 @@ char *virNodeDeviceDefFormat(const virNodeDeviceDefPtr def)
> data->scsi_host.wwnn);
> virBufferEscapeString(&buf, " <wwpn>%s</wwpn>\n",
> data->scsi_host.wwpn);
> + virBufferEscapeString(&buf, " <fabric_wwn>%s</fabric_wwn>\n",
> + data->scsi_host.fabric_wwn);
> virBufferAddLit(&buf, " </capability>\n");
> }
> if (data->scsi_host.flags & VIR_NODE_DEV_CAP_FLAG_HBA_VPORT_OPS) {
> @@ -1405,6 +1407,7 @@ void virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps)
> case VIR_NODE_DEV_CAP_SCSI_HOST:
> VIR_FREE(data->scsi_host.wwnn);
> VIR_FREE(data->scsi_host.wwpn);
> + VIR_FREE(data->scsi_host.fabric_wwn);
> break;
> case VIR_NODE_DEV_CAP_SCSI_TARGET:
> VIR_FREE(data->scsi_target.name);
> diff --git a/src/conf/node_device_conf.h b/src/conf/node_device_conf.h
> index e317354..e787fc7 100644
> --- a/src/conf/node_device_conf.h
> +++ b/src/conf/node_device_conf.h
> @@ -141,6 +141,7 @@ struct _virNodeDevCapsDef {
> unsigned int host;
> char *wwnn;
> char *wwpn;
> + char *fabric_wwn;
> unsigned int flags;
> } scsi_host;
> struct {
> diff --git a/src/node_device/node_device_linux_sysfs.c b/src/node_device/node_device_linux_sysfs.c
> index d352800..380be9c 100644
> --- a/src/node_device/node_device_linux_sysfs.c
> +++ b/src/node_device/node_device_linux_sysfs.c
> @@ -149,10 +149,20 @@ int check_fc_host_linux(union _virNodeDevCapData *d)
> retval = -1;
> }
>
> + if (read_wwn(d->scsi_host.host,
> + "fabric_name",
> + &d->scsi_host.fabric_wwn) == -1) {
> + VIR_ERROR(_("Failed to read fabric WWN for host%d"),
> + d->scsi_host.host);
> + retval = -1;
Not your fault, since you're just following existing practice, but the
error reporting in these methods seems a little odd, using VIR_ERROR
instead of virReportError. Presumably because these codepaths are only
ever run in daemon context, not in response to a user API. These days
though the daemon code also uses virReportError, so some day we might
like to cleanup this code.
> + goto out;
> + }
> +
> out:
> if (retval == -1) {
> VIR_FREE(d->scsi_host.wwnn);
> VIR_FREE(d->scsi_host.wwpn);
> + VIR_FREE(d->scsi_host.fabric_wwn);
> }
> VIR_FREE(sysfs_path);
> return retval;
ACK. The error cleanup can wait till later
Daniel
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