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Sun, 16 Feb 2025 10:25:20 -0800 From: Gal Pressman To: "David S. Miller" , Jakub Kicinski CC: , Eric Dumazet , Paolo Abeni , Simon Horman , Jonathan Corbet , Tony Nguyen , Przemek Kitszel , Andrew Lunn , "Tariq Toukan" , Edward Cree , Ahmed Zaki , , Gal Pressman , Nimrod Oren Subject: [PATCH net-next v3 5/5] selftests: drv-net-hw: Add a test for symmetric RSS hash Date: Sun, 16 Feb 2025 20:24:53 +0200 Message-ID: <20250216182453.226325-6-gal@nvidia.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20250216182453.226325-1-gal@nvidia.com> References: <20250216182453.226325-1-gal@nvidia.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF0000C37F:EE_|CY8PR12MB8411:EE_ X-MS-Office365-Filtering-Correlation-Id: 0ac44ff1-6e61-4615-4e96-08dd4eb74cb7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|82310400026|36860700013|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?BxRkJ0DhsXEHf0A/jixr76MKmqSkzGG18tbFzmLEZuQPOQDA6oA1ODOq+xkA?= =?us-ascii?Q?+UQC+y1Inadms7Xx8NbiByxjqm+7cU8RRYKzcnBR+BRns6e2gjm06kdFJ4xm?= =?us-ascii?Q?eepEpV+zdUElg1lxmzp9OqLIdN1NDEfC6OdHyVi+m4BJYrU8xX2b8Jwrb5uv?= =?us-ascii?Q?38CfONzuVFeQFl4EHAFFEb/uJ1aNNYaeAVHDGLujgw5OFYUPzXX8u0j5TmUn?= =?us-ascii?Q?kvpgOHESEouVowm3FfSSY0qJ3yz4HyQ6KfCEoswOuzrcPJif/719woZfI+xf?= =?us-ascii?Q?ldsx6MTZ7I3lRogccvboIBIXoMv9kKyGU9uuSd7bj31rVP0SqLQkRkW1f6oo?= =?us-ascii?Q?/WAeNgVl8+22XF5JPSpPLpiLv72gnSoyRecyshMzNdQIxnLRXQZ8z17/QrVv?= =?us-ascii?Q?Jl40OhOCo/l1vjL3u6pl/cPqMtzIEI2A3ZIStw5BM8Scc8sKbhHNxC/jZQ0A?= =?us-ascii?Q?UUU/2k/EeM3sogVyPP55ZxEBnBVkXt8rJjgQhjn78LZoNQEqily9QRBa0R7I?= =?us-ascii?Q?pIp2Mm5UPhpHddHGbyHm061/S0me/u5PFgsccHZwhoxfbq2Ge0o7D28p9ZnZ?= =?us-ascii?Q?BAILvvLFuT3/rBJQQyGUGCHfoYPQzdRXgciguvxiOTpT4oHVlgRKZUSX7Hyk?= =?us-ascii?Q?ggBcig97oVpxzPplSEESGgV30t46xnTCwvAd38dw8nb6FbDUR7Hhb1nFkTxs?= =?us-ascii?Q?JqDU8MoxCFi+jfxJvX8PbrOTUWFsCDXGuLcHhpJFtUKlYK2LzwEAOAVvnv1j?= =?us-ascii?Q?4IpV2SnqH63kim93uMOiOKB0IFhXqrOcIc3wp/fYpn6Wo6tSthCLwVrs8DF4?= =?us-ascii?Q?1bv/l1qQmiH/NSNx7XoMlb7uKjAlGIW6L+m0Fk7UVibFANZpxnfICSMvFTyU?= =?us-ascii?Q?BMXAGHdkyHVdZl29RW1aCh3QdTXs564E8ELmjWFAe+hm3swMhrhS0ubfH323?= =?us-ascii?Q?2stQOuDXJoR9UPcx2+3YiIbz+LcwVW1CPZ76HL3x1NM1xzxqKg7egq8SiWj4?= =?us-ascii?Q?7qmxm+PTaljfpvBEZLLmcvCbo5tfF4KWlhTGX/IIvvxh9TB4vGe991lFNrVX?= =?us-ascii?Q?vgiry+05TzNSyFwA6eZeZr/kB7X6XFszpM1B9HCDnl11pCLdIYCW6Hl9/MzP?= =?us-ascii?Q?Dr8wWrgomruzgvZ5DYGif3CNSboUKsg/CUnpGWk3oHUYUF9YjRFZyH/Xw+/r?= =?us-ascii?Q?MUYGVi5mxwIFAvXnxBUTTqA4WNMwnDYzqVLIbzPwOpr6z7chHv9K921RkRY5?= =?us-ascii?Q?R2Vi/Cs7J0DUhRyk+ZTfThuaaKYYWL/g0tyJmzzQUckinwV2O6iaBlGPWgtV?= =?us-ascii?Q?/r11Qt6r8ls8nX/F47IeRjfsCgJIpQphAyBxBrfTV+iv/oX2ul1wUNC8rMAA?= =?us-ascii?Q?D8U5UUbHHA4lAJ1vP9D8yIOucy3TKpvnSvzUp42Ieas6FXiylBfLhdnGebz4?= =?us-ascii?Q?bFJatspzW+O4hAmTY/G9etIElLPtAu8IzWU0onWtN69Z0yIZFqbiLsULxkMt?= =?us-ascii?Q?ZWZ1Oyrt+NJOHwA=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(7416014)(82310400026)(36860700013)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Feb 2025 18:25:32.8135 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0ac44ff1-6e61-4615-4e96-08dd4eb74cb7 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF0000C37F.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB8411 Add a selftest that verifies symmetric RSS hash is working as intended. The test runs two iterations of iperf3 traffic, swapping the src/dst TCP ports, and verifies that the same RX queue is receiving the traffic in both cases. Reviewed-by: Nimrod Oren Signed-off-by: Gal Pressman --- .../testing/selftests/drivers/net/hw/Makefile | 1 + .../drivers/net/hw/rss_input_xfrm.py | 77 +++++++++++++++++++ .../selftests/drivers/net/lib/py/load.py | 7 +- 3 files changed, 83 insertions(+), 2 deletions(-) create mode 100755 tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py diff --git a/tools/testing/selftests/drivers/net/hw/Makefile b/tools/testing/selftests/drivers/net/hw/Makefile index 21ba64ce1e34..23dca086f84f 100644 --- a/tools/testing/selftests/drivers/net/hw/Makefile +++ b/tools/testing/selftests/drivers/net/hw/Makefile @@ -15,6 +15,7 @@ TEST_PROGS = \ nic_performance.py \ pp_alloc_fail.py \ rss_ctx.py \ + rss_input_xfrm.py \ # TEST_FILES := \ diff --git a/tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py b/tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py new file mode 100755 index 000000000000..e32df852f091 --- /dev/null +++ b/tools/testing/selftests/drivers/net/hw/rss_input_xfrm.py @@ -0,0 +1,77 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from lib.py import ksft_run, ksft_exit, ksft_eq, ksft_pr +from lib.py import NetDrvEpEnv +from lib.py import EthtoolFamily, NetdevFamily +from lib.py import KsftSkipEx +from lib.py import rand_port, check_port_available_remote +from lib.py import GenerateTraffic +from rss_ctx import _get_rx_cnts + + +def _get_active_rx_queue(cnts): + return cnts.index(max(cnts)) + + +def _get_rand_port(remote): + for _ in range(1000): + port = rand_port() + try: + check_port_available_remote(port, remote) + return port + except: + continue + + raise Exception("Can't find any free unprivileged port") + + +def test_rss_input_xfrm(cfg): + """ + Test symmetric input_xfrm. + If symmetric RSS hash is configured, send traffic twice, swapping the + src/dst TCP ports, and verify that the same queue is receiving the traffic + in both cases (IPs are constant). + """ + + input_xfrm = cfg.ethnl.rss_get( + {'header': {'dev-name': cfg.ifname}}).get('input_xfrm') + + # Check for symmetric xor/or-xor + if input_xfrm and (input_xfrm == 1 or input_xfrm == 2): + port1 = _get_rand_port(cfg.remote) + port2 = _get_rand_port(cfg.remote) + ksft_pr(f'Running traffic on ports: {port1 = }, {port2 = }') + + cnts = _get_rx_cnts(cfg) + GenerateTraffic(cfg, port=port1, parallel=1, + cport=port2).wait_pkts_and_stop(20000) + cnts = _get_rx_cnts(cfg, prev=cnts) + rxq1 = _get_active_rx_queue(cnts) + ksft_pr(f'Received traffic on {rxq1 = }') + + cnts = _get_rx_cnts(cfg) + GenerateTraffic(cfg, port=port2, parallel=1, + cport=port1).wait_pkts_and_stop(20000) + cnts = _get_rx_cnts(cfg, prev=cnts) + rxq2 = _get_active_rx_queue(cnts) + ksft_pr(f'Received traffic on {rxq2 = }') + + ksft_eq( + rxq1, rxq2, comment=f"Received traffic on different queues ({rxq1} != {rxq2}) while symmetric hash is configured") + else: + raise KsftSkipEx("Symmetric RSS hash not requested") + + +def main() -> None: + with NetDrvEpEnv(__file__, nsim_test=False) as cfg: + cfg.ethnl = EthtoolFamily() + cfg.netdevnl = NetdevFamily() + + ksft_run([test_rss_input_xfrm], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() diff --git a/tools/testing/selftests/drivers/net/lib/py/load.py b/tools/testing/selftests/drivers/net/lib/py/load.py index da5af2c680fa..76aaa65c0367 100644 --- a/tools/testing/selftests/drivers/net/lib/py/load.py +++ b/tools/testing/selftests/drivers/net/lib/py/load.py @@ -5,7 +5,7 @@ import time from lib.py import ksft_pr, cmd, ip, rand_port, wait_port_listen, bkg class GenerateTraffic: - def __init__(self, env, port=None): + def __init__(self, env, port=None, cport=None, parallel=16): env.require_cmd("iperf3", remote=True) self.env = env @@ -15,7 +15,10 @@ class GenerateTraffic: self._iperf_server = cmd(f"iperf3 -s -1 -p {port}", background=True) wait_port_listen(port) time.sleep(0.1) - self._iperf_client = cmd(f"iperf3 -c {env.addr} -P 16 -p {port} -t 86400", + client_cmd = f"iperf3 -c {env.addr} -P {parallel} -p {port} -t 86400" + if cport and parallel == 1: + client_cmd = f"{client_cmd} --cport {cport}" + self._iperf_client = cmd(client_cmd, background=True, host=env.remote) # Wait for traffic to ramp up -- 2.40.1