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authorAndrew Vasquez <andrew.vasquez@qlogic.com>2005-10-28 03:03:37 +0400
committerJames Bottomley <jejb@mulgrave.(none)>2005-10-29 04:35:25 +0400
commit91ca7b01ecc916632202180569a7ddbfccfc3f05 (patch)
treed26c8af7ba9d06f6b04e85270dbce0dad0624668 /drivers/scsi/scsi_transport_fc.c
parentf9a2d2e0c89f73f0203fa796101089c2bce31974 (diff)
downloadlinux-91ca7b01ecc916632202180569a7ddbfccfc3f05.tar.xz
[SCSI] Add an 'Issue LIP' device attribute in fc_transport class
Ok, here's a patch to add such a common API for fc transport users. Relevant LLD changes (lpfc and qla2xxx) also present. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_transport_fc.c')
-rw-r--r--drivers/scsi/scsi_transport_fc.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 473a82d5e3e2..27702097b7fc 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -220,7 +220,7 @@ static void fc_rport_terminate(struct fc_rport *rport);
*/
#define FC_STARGET_NUM_ATTRS 3
#define FC_RPORT_NUM_ATTRS 9
-#define FC_HOST_NUM_ATTRS 15
+#define FC_HOST_NUM_ATTRS 16
struct fc_internal {
struct scsi_transport_template t;
@@ -713,9 +713,11 @@ static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO, \
count++
#define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
+{ \
i->private_host_attrs[count] = class_device_attr_host_##field; \
i->host_attrs[count] = &i->private_host_attrs[count]; \
- count++
+ count++; \
+}
/* Fixed Host Attributes */
@@ -853,6 +855,26 @@ static FC_CLASS_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR,
show_fc_private_host_tgtid_bind_type,
store_fc_private_host_tgtid_bind_type);
+static ssize_t
+store_fc_private_host_issue_lip(struct class_device *cdev,
+ const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = transport_class_to_shost(cdev);
+ struct fc_internal *i = to_fc_internal(shost->transportt);
+ int ret;
+
+ /* ignore any data value written to the attribute */
+ if (i->f->issue_fc_host_lip) {
+ ret = i->f->issue_fc_host_lip(shost);
+ return ret ? ret: count;
+ }
+
+ return -ENOENT;
+}
+
+static FC_CLASS_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL,
+ store_fc_private_host_issue_lip);
+
/*
* Host Statistics Management
*/
@@ -1119,6 +1141,8 @@ fc_attach_transport(struct fc_function_template *ft)
/* Transport-managed attributes */
SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type);
+ if (ft->issue_fc_host_lip)
+ SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip);
BUG_ON(count > FC_HOST_NUM_ATTRS);