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authorAndrew Vasquez <andrew.vasquez@qlogic.com>2008-07-18 19:32:52 +0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-10-03 20:46:15 +0400
commita30c3f69e6336cb9b09a989595e417367e4e9b1b (patch)
tree219211924d44553b97579682cd8c27750b47b631 /Documentation/scsi
parent7404ad3b6d04efbd918e9e2e776bf560fbedf47d (diff)
downloadlinux-a30c3f69e6336cb9b09a989595e417367e4e9b1b.tar.xz
[SCSI] fc_transport: Add an API to allow an LLD to create vports
There's already a fc_vport_termintate() call exported by the transport. This patch adds a symmetric call to the API to allow an NPIV-capable LLD to instantiate vports sans user intervention. Additional comments/updates: Re: scsi_fc_transport.txt Add a function prototype for fc_vport_terminate similar to what's done for fc_vport_create Re: fc_vport_create I recommend we pass the channel number in fc_vport_create rather than fixing it at zero. Also, ids->vport_type should be set to FC_PORTTYPE_NPIV prior to calling fc_vport_create. The comment is also meaningless. Added-by and Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'Documentation/scsi')
-rw-r--r--Documentation/scsi/scsi_fc_transport.txt36
1 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/scsi/scsi_fc_transport.txt b/Documentation/scsi/scsi_fc_transport.txt
index 75143f0c23b6..38d324d62b25 100644
--- a/Documentation/scsi/scsi_fc_transport.txt
+++ b/Documentation/scsi/scsi_fc_transport.txt
@@ -436,6 +436,42 @@ Other:
was updated to remove all vports for the fc_host as well.
+Transport supplied functions
+----------------------------
+
+The following functions are supplied by the FC-transport for use by LLDs.
+
+ fc_vport_create - create a vport
+ fc_vport_terminate - detach and remove a vport
+
+Details:
+
+/**
+ * fc_vport_create - Admin App or LLDD requests creation of a vport
+ * @shost: scsi host the virtual port is connected to.
+ * @ids: The world wide names, FC4 port roles, etc for
+ * the virtual port.
+ *
+ * Notes:
+ * This routine assumes no locks are held on entry.
+ */
+struct fc_vport *
+fc_vport_create(struct Scsi_Host *shost, struct fc_vport_identifiers *ids)
+
+/**
+ * fc_vport_terminate - Admin App or LLDD requests termination of a vport
+ * @vport: fc_vport to be terminated
+ *
+ * Calls the LLDD vport_delete() function, then deallocates and removes
+ * the vport from the shost and object tree.
+ *
+ * Notes:
+ * This routine assumes no locks are held on entry.
+ */
+int
+fc_vport_terminate(struct fc_vport *vport)
+
+
Credits
=======
The following people have contributed to this document: