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[144.49.247.95]) by smtp-relay.gmail.com with ESMTPS id d9443c01a7336-2ad74fd7254sm8987445ad.28.2026.02.23.11.12.12 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 23 Feb 2026 11:12:12 -0800 (PST) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-dy1-f200.google.com with SMTP id 5a478bee46e88-2ba66faa692so7622784eec.1 for ; Mon, 23 Feb 2026 11:12:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1771873931; x=1772478731; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=VuvyQiLmrnh28Gu37E9OPE1T+qFo4OP2EvGponbeEDU=; b=YUwSrjLBh8FbD4nhrVrhk3sdpowGDsekStHGd4+8lHRHXgkVtfMz9OOl97ouXhi3qH /BJduc+awlx39Gj9paJJfpGIF/6YSBtygqF/91hzELLfqsKXafiahX9cIb1/b0cM62xP 7Qnq0EFnPNikdR2EwCLg4OH/l7vPOWEEx86WA= X-Forwarded-Encrypted: i=1; AJvYcCUMi1cdw5O591CnieC3tsmnBTOJiYSYkYljGVcXxtEYAcycHMsGLKN9Z5BdSEjY4/YAf5QPkCHKzl+P+MM=@vger.kernel.org X-Received: by 2002:a05:7300:bb0a:b0:2ba:6a79:f04c with SMTP id 5a478bee46e88-2bd7bd54575mr4359575eec.18.1771873931162; Mon, 23 Feb 2026 11:12:11 -0800 (PST) X-Received: by 2002:a05:7300:bb0a:b0:2ba:6a79:f04c with SMTP id 5a478bee46e88-2bd7bd54575mr4359554eec.18.1771873930474; Mon, 23 Feb 2026 11:12:10 -0800 (PST) Received: from lvnvda4076.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2bd7da3eec5sm5332734eec.4.2026.02.23.11.12.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Feb 2026 11:12:10 -0800 (PST) From: Kiran Kella To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, daniel.zahka@gmail.com, willemb@google.com, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, jayakrishnan.udayavarma@broadcom.com, ajit.khaparde@broadcom.com, akhilesh.samineni@broadcom.com, Kiran Kella Subject: [net-next, v2 2/2] selftests: drv-net: psp: add test for VLAN sub-interface Date: Mon, 23 Feb 2026 11:11:54 -0800 Message-ID: <20260223191154.2800616-3-kiran.kella@broadcom.com> X-Mailer: git-send-email 2.45.4 In-Reply-To: <20260223191154.2800616-1-kiran.kella@broadcom.com> References: <20260223191154.2800616-1-kiran.kella@broadcom.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Add test to validate that the psp device information is propagated properly from the lower device to the upper devices so that the PSP transmit validation passes. Signed-off-by: Kiran Kella Reviewed-by: Akhilesh Samineni --- tools/testing/selftests/drivers/net/psp.py | 86 +++++++++++++++++++++- 1 file changed, 85 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/psp.py b/tools/testing/selftests/drivers/net/psp.py index 864d9fce1094..c45a04172844 100755 --- a/tools/testing/selftests/drivers/net/psp.py +++ b/tools/testing/selftests/drivers/net/psp.py @@ -18,6 +18,7 @@ from lib.py import KsftSkipEx from lib.py import NetDrvEpEnv, PSPFamily, NlError from lib.py import bkg, rand_port, wait_port_listen +from lib.py import ip def _get_outq(s): one = b'\0' * 4 @@ -570,6 +571,89 @@ def removal_device_bi(cfg): finally: _close_conn(cfg, s) +def vlan_basic_send(cfg): + """ + Test PSP over VLAN-to-VLAN traffic + + Network topology: + Local VLAN (nsim0.100) <---> Remote VLAN (nsim1.100) + | | + Local Physical (nsim0) <---> Remote Physical (nsim1) + [PSP configured here] + """ + _init_psp_dev(cfg) + + # VLAN configuration + vlan_id = 100 + local_vlan_ifname = f"{cfg.ifname}.{vlan_id}" + remote_vlan_ifname = f"{cfg.remote_ifname}.{vlan_id}" + + local_vlan_addr_v4 = "192.0.2.21" + remote_vlan_addr_v4 = "192.0.2.22" + local_vlan_addr_v6 = "2001:db8::21" + remote_vlan_addr_v6 = "2001:db8::22" + + # Create VLAN interface on LOCAL side + ip(f"link add link {cfg.ifname} name {local_vlan_ifname} type vlan id {vlan_id}") + defer(ip, f"link del {local_vlan_ifname}") + ip(f"addr add {local_vlan_addr_v4}/24 dev {local_vlan_ifname}") + ip(f"-6 addr add {local_vlan_addr_v6}/64 dev {local_vlan_ifname} nodad") + ip(f"link set {local_vlan_ifname} up") + + # Create VLAN interface on REMOTE side + ip(f"link add link {cfg.remote_ifname} name {remote_vlan_ifname} type vlan id {vlan_id}", host=cfg.remote) + defer(ip, f"link del {remote_vlan_ifname}", host=cfg.remote) + ip(f"addr add {remote_vlan_addr_v4}/24 dev {remote_vlan_ifname}", host=cfg.remote) + ip(f"-6 addr add {remote_vlan_addr_v6}/64 dev {remote_vlan_ifname} nodad", host=cfg.remote) + ip(f"link set {remote_vlan_ifname} up", host=cfg.remote) + + # Get VLAN interface index + local_vlan_info = ip(f"-j link show {local_vlan_ifname}", json=True)[0] + local_vlan_ifindex = local_vlan_info['ifindex'] + + # Create a cfg-like object for VLAN interfaces + # The PSP device is still on the physical interface, but + # the socket will be bound to the VLAN interface + class VlanCfg: + pass + + vlan_cfg = VlanCfg() + vlan_cfg.ifname = local_vlan_ifname + vlan_cfg.ifindex = local_vlan_ifindex + vlan_cfg.remote_ifname = remote_vlan_ifname + vlan_cfg.addr_v = {"4": local_vlan_addr_v4, "6": local_vlan_addr_v6} + vlan_cfg.remote_addr_v = {"4": remote_vlan_addr_v4, "6": remote_vlan_addr_v6} + vlan_cfg.addr = local_vlan_addr_v4 + vlan_cfg.remote_addr = remote_vlan_addr_v4 + vlan_cfg.pspnl = cfg.pspnl + vlan_cfg.psp_dev_id = cfg.psp_dev_id + vlan_cfg.remote = cfg.remote + vlan_cfg.comm_port = cfg.comm_port + vlan_cfg.comm_sock = cfg.comm_sock + + s = _make_psp_conn(vlan_cfg, version=0) + defer(_close_psp_conn, vlan_cfg, s) + + # Create PSP associations + # The socket's device is VLAN, but PSP device is on physical NIC + rx_assoc = vlan_cfg.pspnl.rx_assoc({ + "version": 0, + "dev-id": vlan_cfg.psp_dev_id, # PSP device on physical interface + "sock-fd": s.fileno() + }) + rx = rx_assoc['rx-key'] + tx = _spi_xchg(s, rx) + + vlan_cfg.pspnl.tx_assoc({ + "dev-id": vlan_cfg.psp_dev_id, + "version": 0, + "tx-key": tx, + "sock-fd": s.fileno() + }) + + # Send data through VLAN interface (VLAN-to-VLAN traffic!) + data_len = _send_careful(vlan_cfg, s, 100) + _check_data_rx(vlan_cfg, data_len) def psp_ip_ver_test_builder(name, test_func, psp_ver, ipver): """Build test cases for each combo of PSP version and IP version""" @@ -624,7 +708,7 @@ def main() -> None: ] ksft_run(cases=cases, globs=globals(), - case_pfx={"dev_", "data_", "assoc_", "removal_"}, + case_pfx={"dev_", "data_", "assoc_", "removal_", "vlan_"}, args=(cfg, )) cfg.comm_sock.send(b"exit\0") -- 2.45.4