2 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/ABI/stable/sysfs-driver-ib_srp b/Documentation/ABI/stable/sysfs-driver-ib_srp
index 18e9b279ebb1..b95067eb5f18 100644
--- a/Documentation/ABI/stable/sysfs-driver-ib_srp
+++ b/Documentation/ABI/stable/sysfs-driver-ib_srp
@@ -155,6 +155,13 @@ Contact:	linux-rdma@vger.kernel.org
 Description:    InfiniBand service ID used for establishing communication with
                 the SRP target.
 
+What:           /sys/class/scsi_host/host<n>/sgid
+Date:           February 1, 2014
+KernelVersion:  3.13
+Contact:        linux-rdma@vger.kernel.org
+Description:    InfiniBand GID of the source port used for communication with
+                the SRP target.
+
 What:           /sys/class/scsi_host/host<n>/zero_req_lim
 Date:           September 20, 2006
 KernelVersion:  2.6.18
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index ebbe01bdd306..62e1f2a1c522 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1965,6 +1965,14 @@ static ssize_t show_pkey(struct device *dev, struct device_attribute *attr,
         return sprintf(buf, "0x%04x\n", be16_to_cpu(target->path.pkey));
 }
 
+static ssize_t show_sgid(struct device *dev, struct device_attribute *attr,
+                         char *buf)
+{
+        struct srp_target_port *target = host_to_target(class_to_shost(dev));
+
+        return sprintf(buf, "%pI6\n", target->path.sgid.raw);
+}
+
 static ssize_t show_dgid(struct device *dev, struct device_attribute *attr,
                          char *buf)
 {
@@ -2049,6 +2057,7 @@ static DEVICE_ATTR(id_ext,	    S_IRUGO, show_id_ext,	   NULL);
 static DEVICE_ATTR(ioc_guid,        S_IRUGO, show_ioc_guid,        NULL);
 static DEVICE_ATTR(service_id,      S_IRUGO, show_service_id,      NULL);
 static DEVICE_ATTR(pkey,            S_IRUGO, show_pkey,            NULL);
+static DEVICE_ATTR(sgid,            S_IRUGO, show_sgid,            NULL);
 static DEVICE_ATTR(dgid,            S_IRUGO, show_dgid,            NULL);
 static DEVICE_ATTR(orig_dgid,       S_IRUGO, show_orig_dgid,       NULL);
 static DEVICE_ATTR(req_lim,         S_IRUGO, show_req_lim,         NULL);
@@ -2065,6 +2074,7 @@ static struct device_attribute *srp_host_attrs[] = {
         &dev_attr_ioc_guid,
         &dev_attr_service_id,
         &dev_attr_pkey,
+        &dev_attr_sgid,
         &dev_attr_dgid,
         &dev_attr_orig_dgid,
         &dev_attr_req_lim,