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Commit 2fb89a38 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

selftests/bpf: check for spurious extacks from the driver 



Drivers should not report errors when offload is not forced.
Check stdout and stderr for familiar messages when with no
skip flags and with skip_hw.  Check for add, replace, and
destroy.

Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 15f4edb3

tools/testing/selftests/bpf/test_offload.py

+27 −0
Original line number Diff line number Diff line
@@ -543,6 +543,10 @@ def check_extack(output, reference, args): 
def check_extack_nsim(output, reference, args):

    check_extack(output, "Error: netdevsim: " + reference, args)



def check_no_extack(res, needle):

    fail((res[1] + res[2]).count(needle) or (res[1] + res[2]).count("Warning:"),

         "Found '%s' in command output, leaky extack?" % (needle))



def check_verifier_log(output, reference):

    lines = output.split("\n")

    for l in reversed(lines):
@@ -550,6 +554,18 @@ def check_verifier_log(output, reference): 
            return

    fail(True, "Missing or incorrect message from netdevsim in verifier log")



def test_spurios_extack(sim, obj, skip_hw, needle):

    res = sim.cls_bpf_add_filter(obj, prio=1, handle=1, skip_hw=skip_hw,

                                 include_stderr=True)

    check_no_extack(res, needle)

    res = sim.cls_bpf_add_filter(obj, op="replace", prio=1, handle=1,

                                 skip_hw=skip_hw, include_stderr=True)

    check_no_extack(res, needle)

    res = sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf",

                            include_stderr=True)

    check_no_extack(res, needle)





# Parse command line

parser = argparse.ArgumentParser()

parser.add_argument("--log", help="output verbose log to given file")
@@ -687,6 +703,17 @@ try: 
                 (j))

        sim.cls_filter_op(op="delete", prio=1, handle=1, cls="bpf")



    start_test("Test spurious extack from the driver...")

    test_spurios_extack(sim, obj, False, "netdevsim")

    test_spurios_extack(sim, obj, True, "netdevsim")



    sim.set_ethtool_tc_offloads(False)



    test_spurios_extack(sim, obj, False, "TC offload is disabled")

    test_spurios_extack(sim, obj, True, "TC offload is disabled")



    sim.set_ethtool_tc_offloads(True)



    sim.tc_flush_filters()



    start_test("Test TC offloads work...")