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selftest: extend test_rss_context_queue_reconfigure for action addition

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The combination of ntuple action (ring_cookie) and RSS context can
 cause an ntuple rule to target a higher queue than appears in any
 RSS indirection table or directly in the ntuple rule, since the two
 numbers are added together.  Verify the logic that prevents reducing
 the queue count in this case.

Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/58276b800ab78c0a79c1918046ccae7fe45ba802.1731499022.git.ecree.xilinx@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Edward Cree 2024-11-13 12:13:13 +00:00 committed by Jakub Kicinski
parent e9e8abfec2
commit 29a4bc1fe9
1 changed files with 26 additions and 0 deletions
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26
tools/testing/selftests/drivers/net/hw/rss_ctx.py
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@ -238,6 +238,32 @@ def test_rss_queue_reconfigure(cfg, main_ctx=True):
else:
raise Exception(f"Driver didn't prevent us from deactivating a used queue (context {ctx_id})")
if not main_ctx:
ethtool(f"-L {cfg.ifname} combined 4")
flow = f"flow-type tcp{cfg.addr_ipver} dst-ip {cfg.addr} dst-port {port} context {ctx_id} action 1"
try:
# this targets queue 4, which doesn't exist
ntuple2 = ethtool_create(cfg, "-N", flow)
except CmdExitFailure:
pass
else:
raise Exception(f"Driver didn't prevent us from targeting a nonexistent queue (context {ctx_id})")
# change the table to target queues 0 and 2
ethtool(f"-X {cfg.ifname} {ctx_ref} weight 1 0 1 0")
# ntuple rule therefore targets queues 1 and 3
ntuple2 = ethtool_create(cfg, "-N", flow)
# should replace existing filter
ksft_eq(ntuple, ntuple2)
_send_traffic_check(cfg, port, ctx_ref, { 'target': (1, 3),
'noise' : (0, 2) })
# Setting queue count to 3 should fail, queue 3 is used
try:
ethtool(f"-L {cfg.ifname} combined 3")
except CmdExitFailure:
pass
else:
raise Exception(f"Driver didn't prevent us from deactivating a used queue (context {ctx_id})")
def test_rss_resize(cfg):
"""Test resizing of the RSS table.