tests: iproute2 VRF capability check examples

Example usage of iproute2_is_vrf_capable check in bgp_multi_vrf_topo1
and bgp_multi_vrf_topo2 topotests.

Signed-off-by: David Schweizer <dschweizer@opensourcerouting.org>

tests/topotests/bgp_multi_vrf_topo1/test_bgp_multi_vrf_topo1.py

@@ -115,7 +115,7 @@
 # Import topogen and topotest helpers
 from lib.topogen import Topogen, get_topogen
 from mininet.topo import Topo
-
+from lib.topotest import iproute2_is_vrf_capable
 from lib.common_config import (
     step,
     verify_rib,
@@ -215,6 +215,10 @@ def setup_module(mod):
     if result is not True:
         pytest.skip("Kernel requirements are not met")
 
+    # iproute2 needs to support VRFs for this suite to run.
+    if not iproute2_is_vrf_capable():
+        pytest.skip("Installed iproute2 version does not support VRFs")
+
     testsuite_run_time = time.asctime(time.localtime(time.time()))
     logger.info("Testsuite start time: {}".format(testsuite_run_time))
     logger.info("=" * 40)

tests/topotests/bgp_multi_vrf_topo2/test_bgp_multi_vrf_topo2.py

@@ -71,7 +71,7 @@
 # Import topogen and topotest helpers
 from lib.topogen import Topogen, get_topogen
 from mininet.topo import Topo
-
+from lib.topotest import iproute2_is_vrf_capable
 from lib.common_config import (
     step,
     verify_rib,
@@ -164,6 +164,10 @@ def setup_module(mod):
     if result is not True:
         pytest.skip("Kernel requirements are not met")
 
+    # iproute2 needs to support VRFs for this suite to run.
+    if not iproute2_is_vrf_capable():
+        pytest.skip("Installed iproute2 version does not support VRFs")
+
     testsuite_run_time = time.asctime(time.localtime(time.time()))
     logger.info("Testsuite start time: {}".format(testsuite_run_time))
     logger.info("=" * 40)