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authorIshai Rabinovitz <ishai@mellanox.co.il>2007-05-07 06:18:11 +0200
committerRoland Dreier <rolandd@cisco.com>2007-05-07 06:18:11 +0200
commit3633b3d096286cf21bc07b16fa6265fb006d0844 (patch)
tree5219a4104fe5d663c1ef1a69ba2a0352da36c6e9 /drivers
parentIPoIB/cm: Don't crash if remote side uses one QP for both directions (diff)
downloadlinux-3633b3d096286cf21bc07b16fa6265fb006d0844.tar.xz
linux-3633b3d096286cf21bc07b16fa6265fb006d0844.zip
IB/srp: Add orig_dgid sysfs attribute to scsi_host
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.c22
-rw-r--r--drivers/infiniband/ulp/srp/ib_srp.h1
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 5e8ac577f0ad..df526cb9e796 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -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:
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 2f3319c719a5..1d53c7bc368f 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -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;