Commit 29a4bc1f authored by Edward Cree's avatar Edward Cree Committed by Jakub Kicinski
Browse files

selftest: extend test_rss_context_queue_reconfigure for action addition 



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: default avatarEdward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/58276b800ab78c0a79c1918046ccae7fe45ba802.1731499022.git.ecree.xilinx@gmail.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e9e8abfe

tools/testing/selftests/drivers/net/hw/rss_ctx.py

+26 −0
Original line number Diff line number Diff line
@@ -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.