[dts] [PATCH] bug fix: fix issue when DTS run on Fedora21 and freebsd

[Yong Liu]

Some nic like FVL have more than only one interface on Fedora21, DTS will take
the first one as functional one. Not all OS has alias "ll" available, use "ls"
in replace of it.

Signed-off-by: Marvinliu <yong.liu at intel.com>

diff --git a/framework/crb.py b/framework/crb.py
index 28df2f9..a699bfc 100644
--- a/framework/crb.py
+++ b/framework/crb.py
@@ -191,7 +191,12 @@ class Crb(object):
         Get interface name of specified pci device on linux.
         """
         command = 'ls --color=never /sys/bus/pci/devices/0000:%s:%s/net' % (bus_id, devfun_id)
-        return self.send_expect(command, '# ')
+        out = self.send_expect(command, '# ', verify=True)
+        if out == -1:
+            name = ""
+        else:
+            name = out.split()[0]
+        return name
 
     def get_interface_name_freebsd(self, bus_id, devfun_id):
         """
diff --git a/framework/project_dpdk.py b/framework/project_dpdk.py
index a6ac218..bc6ccca 100644
--- a/framework/project_dpdk.py
+++ b/framework/project_dpdk.py
@@ -202,7 +202,7 @@ class DPDKdut(Dut):
             # ToDo: make this configurable
             dst_dir = "/tmp/"
 
-            out = self.send_expect("ll %s && cd %s" % (dst_dir, p_dir),
+            out = self.send_expect("ls %s && cd %s" % (dst_dir, p_dir),
                                    "#", verify=True)
             if out == -1:
                 raise ValueError("Directiry %s or %s does not exist,"
-- 
1.9.3