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selftests: drv-net: rss_ctx: check for all-zero keys

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We had a handful of bugs relating to key being either all 0
or just reported incorrectly as all 0. Check for this in
the tests.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2024-07-25 15:23:53 -07:00 committed by David S. Miller
parent dc9755370e
commit 0d6ccfe6b3
1 changed files with 34 additions and 3 deletions
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37
tools/testing/selftests/drivers/net/hw/rss_ctx.py
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@ -19,6 +19,15 @@ def _rss_key_rand(length):
return [random.randint(0, 255) for _ in range(length)]
def _rss_key_check(cfg, data=None, context=0):
if data is None:
data = get_rss(cfg, context=context)
if 'rss-hash-key' not in data:
return
non_zero = [x for x in data['rss-hash-key'] if x != 0]
ksft_eq(bool(non_zero), True, comment=f"RSS key is all zero {data['rss-hash-key']}")
def get_rss(cfg, context=0):
return ethtool(f"-x {cfg.ifname} context {context}", json=True)[0]
@ -90,8 +99,9 @@ def _send_traffic_check(cfg, port, name, params):
def test_rss_key_indir(cfg):
"""Test basics like updating the main RSS key and indirection table."""
if len(_get_rx_cnts(cfg)) < 2:
KsftSkipEx("Device has only one queue (or doesn't support queue stats)")
qcnt = len(_get_rx_cnts(cfg))
if qcnt < 3:
KsftSkipEx("Device has fewer than 3 queues (or doesn't support queue stats)")
data = get_rss(cfg)
want_keys = ['rss-hash-key', 'rss-hash-function', 'rss-indirection-table']
@ -101,6 +111,7 @@ def test_rss_key_indir(cfg):
if not data[k]:
raise KsftFailEx(f"ethtool results empty for '{k}': {data[k]}")
_rss_key_check(cfg, data=data)
key_len = len(data['rss-hash-key'])
# Set the key
@ -110,9 +121,26 @@ def test_rss_key_indir(cfg):
data = get_rss(cfg)
ksft_eq(key, data['rss-hash-key'])
# Set the indirection table and the key together
key = _rss_key_rand(key_len)
ethtool(f"-X {cfg.ifname} equal 3 hkey " + _rss_key_str(key))
reset_indir = defer(ethtool, f"-X {cfg.ifname} default")
data = get_rss(cfg)
_rss_key_check(cfg, data=data)
ksft_eq(0, min(data['rss-indirection-table']))
ksft_eq(2, max(data['rss-indirection-table']))
# Reset indirection table and set the key
key = _rss_key_rand(key_len)
ethtool(f"-X {cfg.ifname} default hkey " + _rss_key_str(key))
data = get_rss(cfg)
_rss_key_check(cfg, data=data)
ksft_eq(0, min(data['rss-indirection-table']))
ksft_eq(qcnt - 1, max(data['rss-indirection-table']))
# Set the indirection table
ethtool(f"-X {cfg.ifname} equal 2")
reset_indir = defer(ethtool, f"-X {cfg.ifname} default")
data = get_rss(cfg)
ksft_eq(0, min(data['rss-indirection-table']))
ksft_eq(1, max(data['rss-indirection-table']))
@ -317,8 +345,11 @@ def test_rss_context(cfg, ctx_cnt=1, create_with_cfg=None):
ctx_cnt = i
break
_rss_key_check(cfg, context=ctx_id)
if not create_with_cfg:
ethtool(f"-X {cfg.ifname} context {ctx_id} {want_cfg}")
_rss_key_check(cfg, context=ctx_id)
# Sanity check the context we just created
data = get_rss(cfg, ctx_id)