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selftests/bpf: add test for multiple programs 

Add tests for having an XDP program attached in the driver and
another one attached in HW simultaneously.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Jakub Kicinski 2018-07-11 20:36:43 -07:00 committed by Daniel Borkmann
parent 799e173d71
commit 99dadb6e3e
1 changed files with 63 additions and 0 deletions
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63
tools/testing/selftests/bpf/test_offload.py
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@ -339,6 +339,11 @@ class NetdevSim:
self.dfs = DebugfsDir(self.dfs_dir)
return self.dfs
def dfs_read(self, f):
path = os.path.join(self.dfs_dir, f)
_, data = cmd('cat %s' % (path))
return data.strip()
def dfs_num_bound_progs(self):
path = os.path.join(self.dfs_dir, "bpf_bound_progs")
_, progs = cmd('ls %s' % (path))
@ -814,6 +819,10 @@ try:
"Device parameters reported for non-offloaded program")
start_test("Test XDP prog replace with bad flags...")
ret, _, err = sim.set_xdp(obj, "generic", force=True,
fail=False, include_stderr=True)
fail(ret == 0, "Replaced XDP program with a program in different mode")
fail(err.count("File exists") != 1, "Replaced driver XDP with generic")
ret, _, err = sim.set_xdp(obj, "", force=True,
fail=False, include_stderr=True)
fail(ret == 0, "Replaced XDP program with a program in different mode")
@ -883,6 +892,60 @@ try:
rm(pin_file)
bpftool_prog_list_wait(expected=0)
start_test("Test multi-attachment XDP - attach...")
sim.set_xdp(obj, "offload")
xdp = sim.ip_link_show(xdp=True)["xdp"]
offloaded = sim.dfs_read("bpf_offloaded_id")
fail("prog" not in xdp, "Base program not reported in single program mode")
fail(len(ipl["xdp"]["attached"]) != 1,
"Wrong attached program count with one program")
sim.set_xdp(obj, "")
two_xdps = sim.ip_link_show(xdp=True)["xdp"]
offloaded2 = sim.dfs_read("bpf_offloaded_id")
fail(two_xdps["mode"] != 4, "Bad mode reported with multiple programs")
fail("prog" in two_xdps, "Base program reported in multi program mode")
fail(xdp["attached"][0] not in two_xdps["attached"],
"Offload program not reported after driver activated")
fail(len(two_xdps["attached"]) != 2,
"Wrong attached program count with two programs")
fail(two_xdps["attached"][0]["prog"]["id"] ==
two_xdps["attached"][1]["prog"]["id"],
"offloaded and drv programs have the same id")
fail(offloaded != offloaded2,
"offload ID changed after loading driver program")
start_test("Test multi-attachment XDP - replace...")
ret, _, err = sim.set_xdp(obj, "offload", fail=False, include_stderr=True)
fail(err.count("busy") != 1, "Replaced one of programs without -force")
start_test("Test multi-attachment XDP - detach...")
ret, _, err = sim.unset_xdp("drv", force=True,
fail=False, include_stderr=True)
fail(ret == 0, "Removed program with a bad mode")
check_extack(err, "program loaded with different flags.", args)
sim.unset_xdp("offload")
xdp = sim.ip_link_show(xdp=True)["xdp"]
offloaded = sim.dfs_read("bpf_offloaded_id")
fail(xdp["mode"] != 1, "Bad mode reported after multiple programs")
fail("prog" not in xdp,
"Base program not reported after multi program mode")
fail(xdp["attached"][0] not in two_xdps["attached"],
"Offload program not reported after driver activated")
fail(len(ipl["xdp"]["attached"]) != 1,
"Wrong attached program count with remaining programs")
fail(offloaded != "0", "offload ID reported with only driver program left")
start_test("Test multi-attachment XDP - device remove...")
sim.set_xdp(obj, "offload")
sim.remove()
sim = NetdevSim()
sim.set_ethtool_tc_offloads(True)
start_test("Test mixing of TC and XDP...")
sim.tc_add_ingress()
sim.set_xdp(obj, "offload")