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IB/srp: Add orig_dgid sysfs attribute to scsi_host

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Add an orig_dgid attribute in sysfs for SRP scsi_hosts, so that
userspace can tell what the original dgid value written to the
add_target file was, even if the connection is redirected to a
different port while connecting.

Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ishai Rabinovitz 2007-05-06 21:18:11 -07:00 committed by Roland Dreier
parent d6ef7d68f6
commit 3633b3d096
2 changed files with 23 additions and 0 deletions
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22
drivers/infiniband/ulp/srp/ib_srp.c
View file

@ -1468,6 +1468,25 @@ static ssize_t show_dgid(struct class_device *cdev, char *buf)
be16_to_cpu(((__be16 *) target->path.dgid.raw)[7]));
}
static ssize_t show_orig_dgid(struct class_device *cdev, char *buf)
{
struct srp_target_port *target = host_to_target(class_to_shost(cdev));
if (target->state == SRP_TARGET_DEAD ||
target->state == SRP_TARGET_REMOVED)
return -ENODEV;
return sprintf(buf, "%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
be16_to_cpu(target->orig_dgid[0]),
be16_to_cpu(target->orig_dgid[1]),
be16_to_cpu(target->orig_dgid[2]),
be16_to_cpu(target->orig_dgid[3]),
be16_to_cpu(target->orig_dgid[4]),
be16_to_cpu(target->orig_dgid[5]),
be16_to_cpu(target->orig_dgid[6]),
be16_to_cpu(target->orig_dgid[7]));
}
static ssize_t show_zero_req_lim(struct class_device *cdev, char *buf)
{
struct srp_target_port *target = host_to_target(class_to_shost(cdev));
@ -1498,6 +1517,7 @@ static CLASS_DEVICE_ATTR(ioc_guid, S_IRUGO, show_ioc_guid, NULL);
static CLASS_DEVICE_ATTR(service_id, S_IRUGO, show_service_id, NULL);
static CLASS_DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
static CLASS_DEVICE_ATTR(dgid, S_IRUGO, show_dgid, NULL);
static CLASS_DEVICE_ATTR(orig_dgid, S_IRUGO, show_orig_dgid, NULL);
static CLASS_DEVICE_ATTR(zero_req_lim, S_IRUGO, show_zero_req_lim, NULL);
static CLASS_DEVICE_ATTR(local_ib_port, S_IRUGO, show_local_ib_port, NULL);
static CLASS_DEVICE_ATTR(local_ib_device, S_IRUGO, show_local_ib_device, NULL);
@ -1508,6 +1528,7 @@ static struct class_device_attribute *srp_host_attrs[] = {
&class_device_attr_service_id,
&class_device_attr_pkey,
&class_device_attr_dgid,
&class_device_attr_orig_dgid,
&class_device_attr_zero_req_lim,
&class_device_attr_local_ib_port,
&class_device_attr_local_ib_device,
@ -1662,6 +1683,7 @@ static int srp_parse_options(const char *buf, struct srp_target_port *target)
target->path.dgid.raw[i] = simple_strtoul(dgid, NULL, 16);
}
kfree(p);
memcpy(target->orig_dgid, target->path.dgid.raw, 16);
break;
case SRP_OPT_PKEY:

1
drivers/infiniband/ulp/srp/ib_srp.h
View file

@ -129,6 +129,7 @@ struct srp_target_port {
unsigned int scsi_id;
struct ib_sa_path_rec path;
__be16 orig_dgid[8];
struct ib_sa_query *path_query;
int path_query_id;