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[144.49.247.2]) by smtp-relay.gmail.com with ESMTPS id 5a478bee46e88-2b6b336814esm1696935eec.0.2026.01.20.23.36.08 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 20 Jan 2026 23:36:08 -0800 (PST) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-qv1-f70.google.com with SMTP id 6a1803df08f44-890587d4e87so182114326d6.0 for ; Tue, 20 Jan 2026 23:36:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1768980967; x=1769585767; 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=ZFRs/2/xUWr64s2Em1Um+RwUgbyhXVk/kopd42Lfxvw=; b=YWBKm4d0y/tDWooA7J1vV9Tf5Zj6hKGcGciAMoig0BXwb4ofZhYbrZFLklsn3vz/UQ U5vAw2cCgYjsBjlOpL8KsF3rfkpNuXCaRkMyMX4C9Iqj8i6KKaKQqix/zzwmvi9Keh6F NrMy/Dr1yh1XGQMRmbxSShirRA8d0KY12FrhQ= X-Forwarded-Encrypted: i=1; AJvYcCVLsBQO1uDKrhulJ6FKXYh+znF4wXcYNP+IlrMIz9iUNovg2xXF1MQnlU3usDYHtbTKSUUk0fLnXnJkWlg=@vger.kernel.org X-Received: by 2002:ad4:596a:0:b0:894:60a9:d45a with SMTP id 6a1803df08f44-894638f5e6fmr51128436d6.48.1768980967380; Tue, 20 Jan 2026 23:36:07 -0800 (PST) X-Received: by 2002:ad4:596a:0:b0:894:60a9:d45a with SMTP id 6a1803df08f44-894638f5e6fmr51128316d6.48.1768980967000; Tue, 20 Jan 2026 23:36:07 -0800 (PST) Received: from lvnvda4076.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-894592ba642sm51439736d6.57.2026.01.20.23.36.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 23:36:06 -0800 (PST) From: Kiran Kella To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, 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 2/2] selftests: drv-net: psp: add test for VLAN sub-interface Date: Tue, 20 Jan 2026 23:35:17 -0800 Message-ID: <20260121073517.3323332-3-kiran.kella@broadcom.com> X-Mailer: git-send-email 2.45.4 In-Reply-To: <20260121073517.3323332-1-kiran.kella@broadcom.com> References: <20260121073517.3323332-1-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: quoted-printable X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e Content-Type: text/plain; charset="utf-8" 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 | 117 ++++++++++++++++++++- 1 file changed, 115 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/drivers/net/psp.py b/tools/testing/sel= ftests/drivers/net/psp.py index 528a421ecf76..b0373d6b4998 100755 --- a/tools/testing/selftests/drivers/net/psp.py +++ b/tools/testing/selftests/drivers/net/psp.py @@ -17,7 +17,7 @@ from lib.py import ksft_not_none 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 =20 def _get_outq(s): one =3D b'\0' * 4 @@ -568,6 +568,119 @@ def removal_device_bi(cfg): finally: _close_conn(cfg, s) =20 +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] + """ + cfg.require_nsim() + _init_psp_dev(cfg) + + # Store original interface names and addresses + orig_local_ifname =3D cfg.ifname + orig_local_ifindex =3D cfg.ifindex + orig_remote_ifname =3D cfg.remote_ifname + orig_local_addr_v4 =3D cfg.addr_v["4"] + orig_local_addr_v6 =3D cfg.addr_v["6"] + orig_remote_addr_v4 =3D cfg.remote_addr_v["4"] + orig_remote_addr_v6 =3D cfg.remote_addr_v["6"] + + # VLAN configuration + vlan_id =3D 100 + local_vlan_ifname =3D f"{orig_local_ifname}.{vlan_id}" + remote_vlan_ifname =3D f"{orig_remote_ifname}.{vlan_id}" + + local_vlan_addr_v4 =3D "192.0.2.21" + remote_vlan_addr_v4 =3D "192.0.2.22" + local_vlan_addr_v6 =3D "2001:db8::21" + remote_vlan_addr_v6 =3D "2001:db8::22" + + try: + # Create VLAN interface on LOCAL side + ip(f"link add link {orig_local_ifname} name {local_vlan_ifname} ty= pe vlan id {vlan_id}") + 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} n= odad") + ip(f"link set {local_vlan_ifname} up") + + # Create VLAN interface on REMOTE side + ip(f"link add link {orig_remote_ifname} name {remote_vlan_ifname} = type vlan id {vlan_id}", host=3Dcfg.remote) + ip(f"addr add {remote_vlan_addr_v4}/24 dev {remote_vlan_ifname}", = host=3Dcfg.remote) + ip(f"-6 addr add {remote_vlan_addr_v6}/64 dev {remote_vlan_ifname}= nodad", host=3Dcfg.remote) + ip(f"link set {remote_vlan_ifname} up", host=3Dcfg.remote) + + # Get VLAN interface indices + local_vlan_info =3D ip(f"-j link show {local_vlan_ifname}", json= =3DTrue)[0] + local_vlan_ifindex =3D local_vlan_info['ifindex'] + + remote_vlan_info =3D ip(f"-j link show {remote_vlan_ifname}", json= =3DTrue, host=3Dcfg.remote)[0] + remote_vlan_ifindex =3D remote_vlan_info['ifindex'] + + # Temporarily switch cfg to use VLAN interfaces + # The PSP device is still on the physical interface, but + # the socket will be bound to the VLAN interface + cfg.ifname =3D local_vlan_ifname + cfg.ifindex =3D local_vlan_ifindex + cfg.remote_ifname =3D remote_vlan_ifname + cfg.addr_v["4"] =3D local_vlan_addr_v4 + cfg.addr_v["6"] =3D local_vlan_addr_v6 + cfg.remote_addr_v["4"] =3D remote_vlan_addr_v4 + cfg.remote_addr_v["6"] =3D remote_vlan_addr_v6 + cfg.addr =3D local_vlan_addr_v4 + cfg.remote_addr =3D remote_vlan_addr_v4 + + s =3D _make_psp_conn(cfg, version=3D0) + + try: + # Create PSP associations + # The socket's device is VLAN, but PSP device is on physical N= IC + rx_assoc =3D cfg.pspnl.rx_assoc({ + "version": 0, + "dev-id": cfg.psp_dev_id, # PSP device on physical interf= ace + "sock-fd": s.fileno() + }) + rx =3D rx_assoc['rx-key'] + tx =3D _spi_xchg(s, rx) + + cfg.pspnl.tx_assoc({ + "dev-id": cfg.psp_dev_id, + "version": 0, + "tx-key": tx, + "sock-fd": s.fileno() + }) + + # Send data through VLAN interface (VLAN-to-VLAN traffic!) + data_len =3D _send_careful(cfg, s, 100) + _check_data_rx(cfg, data_len) + + finally: + _close_psp_conn(cfg, s) + + finally: + # Restore original interface configuration + cfg.ifname =3D orig_local_ifname + cfg.ifindex =3D orig_local_ifindex + cfg.remote_ifname =3D orig_remote_ifname + cfg.addr_v["4"] =3D orig_local_addr_v4 + cfg.addr_v["6"] =3D orig_local_addr_v6 + cfg.remote_addr_v["4"] =3D orig_remote_addr_v4 + cfg.remote_addr_v["6"] =3D orig_remote_addr_v6 + cfg.addr =3D orig_local_addr_v4 + cfg.remote_addr =3D orig_remote_addr_v4 + + # Clean up VLAN interfaces + try: + ip(f"link del {local_vlan_ifname}") + except Exception: + pass + try: + ip(f"link del {remote_vlan_ifname}", host=3Dcfg.remote) + except Exception: + pass =20 def psp_ip_ver_test_builder(name, test_func, psp_ver, ipver): """Build test cases for each combo of PSP version and IP version""" @@ -622,7 +735,7 @@ def main() -> None: ] =20 ksft_run(cases=3Dcases, globs=3Dglobals(), - case_pfx=3D{"dev_", "data_", "assoc_", "removal_"= }, + case_pfx=3D{"dev_", "data_", "assoc_", "removal_"= , "vlan_"}, args=3D(cfg, )) =20 cfg.comm_sock.send(b"exit\0") --=20 2.45.4