diff --git a/tempest/lib/services/network/security_groups_client.py b/tempest/lib/services/network/security_groups_client.py
old mode 100644
new mode 100755
index 0e25339..5c89a6f
--- a/tempest/lib/services/network/security_groups_client.py
+++ b/tempest/lib/services/network/security_groups_client.py
@@ -16,23 +16,48 @@
 class SecurityGroupsClient(base.BaseNetworkClient):
 
     def create_security_group(self, **kwargs):
+        """Creates an OpenStack Networking security group.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2-ext.html#createSecGroup
+        """
         uri = '/security-groups'
         post_data = {'security_group': kwargs}
         return self.create_resource(uri, post_data)
 
     def update_security_group(self, security_group_id, **kwargs):
+        """Updates a security group.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2-ext.html#updateSecGroup
+        """
         uri = '/security-groups/%s' % security_group_id
         post_data = {'security_group': kwargs}
         return self.update_resource(uri, post_data)
 
     def show_security_group(self, security_group_id, **fields):
+        """Shows details for a security group.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2-ext.html#showSecGroup
+        """
         uri = '/security-groups/%s' % security_group_id
         return self.show_resource(uri, **fields)
 
     def delete_security_group(self, security_group_id):
+        """Deletes an OpenStack Networking security group.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2-ext.html#deleteSecGroup
+        """
         uri = '/security-groups/%s' % security_group_id
         return self.delete_resource(uri)
 
     def list_security_groups(self, **filters):
+        """Lists OpenStack Networking security groups.
+
+        Available params: see http://developer.openstack.org/
+                              api-ref-networking-v2-ext.html#listSecGroups
+        """
         uri = '/security-groups'
         return self.list_resources(uri, **filters)