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Fri, 12 Jun 2026 14:17:56 -0700 From: Dragos Tatulea To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan CC: Dragos Tatulea , , , Subject: [PATCH net-next v2 2/2] io_uring/zcrx: selftests: verify rx_buf_len for large chunks Date: Sat, 13 Jun 2026 00:17:04 +0300 Message-ID: <20260612211709.1456966-4-dtatulea@nvidia.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260612211709.1456966-2-dtatulea@nvidia.com> References: <20260612211709.1456966-2-dtatulea@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: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001C8:EE_|MW4PR12MB5668:EE_ X-MS-Office365-Filtering-Correlation-Id: 00a3bf3d-378d-4d79-1539-08dec8c82022 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|23010399003|82310400026|36860700016|22082099003|18002099003|6133799003|56012099006|11063799006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(376014)(23010399003)(82310400026)(36860700016)(22082099003)(18002099003)(6133799003)(56012099006)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: pOLa4WAwy56vDF7BvbgjoepAkErbbc6JeTB4wXlOO9m9clJ3WVDO+axJF/UzImwlkBRRsFw+XE0wJirBrAnp1jeF7+//CbZjQLjKpo9J4JuwVjzwAs/dHGSHyvM3bEoiFJpr7epO/m66WJ+pIwKb9mt6Jqz5PY91x79UaQGIoNjR9IdBtT3iCwNl7wltipM8OrqVRuYYtwOCS8E6J0wZUNncYnQaDT0eUzSMzTmi7+VrgJQCYHzvoZGLKcGAk+Ih0VH1S3k0wkQwvHYdlhsXmW1e1Isr5AWMTKYGlxHFxYUdUtL5GQ+V6fMsY//YSukdsD5MHv41Z2hsB+f8dWUga2x++QEKw+IEM/Iwjw6/YQGlWxEu0w8KFlhP1ieUE3YEirBSO+wDnDN4+DwXP8M0xXP2mEq5SCbHSbnQH1bzyZMmNhwaRDzZfWHtdcLOMYkv X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jun 2026 21:18:19.0048 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 00a3bf3d-378d-4d79-1539-08dec8c82022 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001C8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB5668 Check the newly added rx_buf_len page_pool field for io_uring in the existing large-chunks test after the receiver is up. Signed-off-by: Dragos Tatulea --- .../selftests/drivers/net/hw/iou-zcrx.py | 26 ++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/hw/iou-zcrx.py b/tools/testing/selftests/drivers/net/hw/iou-zcrx.py index d72b76ba0835..b7a225fe4bea 100755 --- a/tools/testing/selftests/drivers/net/hw/iou-zcrx.py +++ b/tools/testing/selftests/drivers/net/hw/iou-zcrx.py @@ -2,6 +2,7 @@ # SPDX-License-Identifier: GPL-2.0 import re +import resource import time from os import path from lib.py import ksft_run, ksft_exit, KsftSkipEx, ksft_variants, KsftNamedVariant @@ -41,6 +42,23 @@ def set_flow_rule_rss(cfg, rss_ctx_id): return int(values) +def check_iou_rx_buf_len(cfg, expected_rx_buf_len): + """Check the io-uring memory provider exposes the expected rx_buf_len.""" + q = cfg.netnl.queue_get({'ifindex': cfg.ifindex, 'type': 'rx', 'id': cfg.target}) + napi_id = q['napi-id'] + pools = cfg.netnl.page_pool_get({}, dump=True) + pools = [p for p in pools if p.get('napi-id') == napi_id + and 'io-uring' in p] + if len(pools) != 1: + raise Exception(f"Expected 1 io-uring page pool, found {len(pools)}") + rx_buf_len = pools[0]['io-uring'].get('rx-buf-len') + if rx_buf_len is None: + raise KsftSkipEx("io-uring 'rx-buf-len' attribute not supported") + if rx_buf_len != expected_rx_buf_len: + raise Exception(f'Expected io-uring rx-buf-len {expected_rx_buf_len}, ' + f'got {rx_buf_len}') + + def single(cfg): channels = cfg.ethnl.channels_get({'header': {'dev-index': cfg.ifindex}}) channels = channels['combined-count'] @@ -156,7 +174,10 @@ def test_zcrx_large_chunks(cfg) -> None: defer(lambda: open(hp_file, 'w', encoding='utf-8').write(str(nr_hugepages))) single(cfg) - rx_cmd = f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} -q {cfg.target} -x 2" + page_size = resource.getpagesize() + nr_pages = 2 + rx_buf_len = nr_pages * page_size + rx_cmd = f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} -q {cfg.target} -x {nr_pages}" tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {cfg.port} -l 12840" probe = cmd(rx_cmd + " -d", fail=False) @@ -166,6 +187,9 @@ def test_zcrx_large_chunks(cfg) -> None: mp_clear_wait(cfg) with bkg(rx_cmd, exit_wait=True): wait_port_listen(cfg.port, proto="tcp") + + check_iou_rx_buf_len(cfg, rx_buf_len) + cmd(tx_cmd, host=cfg.remote) -- 2.54.0