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-rwxr-xr-xtools/testing/selftests/drivers/net/stats.py144
1 files changed, 144 insertions, 0 deletions
diff --git a/tools/testing/selftests/drivers/net/stats.py b/tools/testing/selftests/drivers/net/stats.py
new file mode 100755
index 000000000000..820b8e0a22c6
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/stats.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+
+from lib.py import ksft_run, ksft_exit, ksft_pr
+from lib.py import ksft_ge, ksft_eq, ksft_in, ksft_true, ksft_raises, KsftSkipEx, KsftXfailEx
+from lib.py import EthtoolFamily, NetdevFamily, RtnlFamily, NlError
+from lib.py import NetDrvEnv
+
+ethnl = EthtoolFamily()
+netfam = NetdevFamily()
+rtnl = RtnlFamily()
+
+
+def check_pause(cfg) -> None:
+ global ethnl
+
+ try:
+ ethnl.pause_get({"header": {"dev-index": cfg.ifindex}})
+ except NlError as e:
+ if e.error == 95:
+ raise KsftXfailEx("pause not supported by the device")
+ raise
+
+ data = ethnl.pause_get({"header": {"dev-index": cfg.ifindex,
+ "flags": {'stats'}}})
+ ksft_true(data['stats'], "driver does not report stats")
+
+
+def check_fec(cfg) -> None:
+ global ethnl
+
+ try:
+ ethnl.fec_get({"header": {"dev-index": cfg.ifindex}})
+ except NlError as e:
+ if e.error == 95:
+ raise KsftXfailEx("FEC not supported by the device")
+ raise
+
+ data = ethnl.fec_get({"header": {"dev-index": cfg.ifindex,
+ "flags": {'stats'}}})
+ ksft_true(data['stats'], "driver does not report stats")
+
+
+def pkt_byte_sum(cfg) -> None:
+ global netfam, rtnl
+
+ def get_qstat(test):
+ global netfam
+ stats = netfam.qstats_get({}, dump=True)
+ if stats:
+ for qs in stats:
+ if qs["ifindex"]== test.ifindex:
+ return qs
+
+ qstat = get_qstat(cfg)
+ if qstat is None:
+ raise KsftSkipEx("qstats not supported by the device")
+
+ for key in ['tx-packets', 'tx-bytes', 'rx-packets', 'rx-bytes']:
+ ksft_in(key, qstat, "Drivers should always report basic keys")
+
+ # Compare stats, rtnl stats and qstats must match,
+ # but the interface may be up, so do a series of dumps
+ # each time the more "recent" stats must be higher or same.
+ def stat_cmp(rstat, qstat):
+ for key in ['tx-packets', 'tx-bytes', 'rx-packets', 'rx-bytes']:
+ if rstat[key] != qstat[key]:
+ return rstat[key] - qstat[key]
+ return 0
+
+ for _ in range(10):
+ rtstat = rtnl.getlink({"ifi-index": cfg.ifindex})['stats64']
+ if stat_cmp(rtstat, qstat) < 0:
+ raise Exception("RTNL stats are lower, fetched later")
+ qstat = get_qstat(cfg)
+ if stat_cmp(rtstat, qstat) > 0:
+ raise Exception("Qstats are lower, fetched later")
+
+
+def qstat_by_ifindex(cfg) -> None:
+ global netfam
+ global rtnl
+
+ # Construct a map ifindex -> [dump, by-index, dump]
+ ifindexes = {}
+ stats = netfam.qstats_get({}, dump=True)
+ for entry in stats:
+ ifindexes[entry['ifindex']] = [entry, None, None]
+
+ for ifindex in ifindexes.keys():
+ entry = netfam.qstats_get({"ifindex": ifindex}, dump=True)
+ ksft_eq(len(entry), 1)
+ ifindexes[entry[0]['ifindex']][1] = entry[0]
+
+ stats = netfam.qstats_get({}, dump=True)
+ for entry in stats:
+ ifindexes[entry['ifindex']][2] = entry
+
+ if len(ifindexes) == 0:
+ raise KsftSkipEx("No ifindex supports qstats")
+
+ # Now make sure the stats match/make sense
+ for ifindex, triple in ifindexes.items():
+ all_keys = triple[0].keys() | triple[1].keys() | triple[2].keys()
+
+ for key in all_keys:
+ ksft_ge(triple[1][key], triple[0][key], comment="bad key: " + key)
+ ksft_ge(triple[2][key], triple[1][key], comment="bad key: " + key)
+
+ # Test invalid dumps
+ # 0 is invalid
+ with ksft_raises(NlError) as cm:
+ netfam.qstats_get({"ifindex": 0}, dump=True)
+ ksft_eq(cm.exception.nl_msg.error, -34)
+ ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.ifindex')
+
+ # loopback has no stats
+ with ksft_raises(NlError) as cm:
+ netfam.qstats_get({"ifindex": 1}, dump=True)
+ ksft_eq(cm.exception.nl_msg.error, -95)
+ ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.ifindex')
+
+ # Try to get stats for lowest unused ifindex but not 0
+ devs = rtnl.getlink({}, dump=True)
+ all_ifindexes = set([dev["ifi-index"] for dev in devs])
+ lowest = 2
+ while lowest in all_ifindexes:
+ lowest += 1
+
+ with ksft_raises(NlError) as cm:
+ netfam.qstats_get({"ifindex": lowest}, dump=True)
+ ksft_eq(cm.exception.nl_msg.error, -19)
+ ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.ifindex')
+
+
+def main() -> None:
+ with NetDrvEnv(__file__) as cfg:
+ ksft_run([check_pause, check_fec, pkt_byte_sum, qstat_by_ifindex],
+ args=(cfg, ))
+ ksft_exit()
+
+
+if __name__ == "__main__":
+ main()