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[144.49.247.27]) by smtp-relay.gmail.com with ESMTPS id 586e51a60fabf-4160d2d4c0bsm377565fac.17.2026.02.26.10.47.28 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 26 Feb 2026 10:47:28 -0800 (PST) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-qk1-f199.google.com with SMTP id af79cd13be357-8cb52a9c0eeso1338561285a.2 for ; Thu, 26 Feb 2026 10:47:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1772131647; x=1772736447; 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=jafYfDMXlkNngqCFpdDSXM7Zpv6/tNdLZ8FA9C+kjOU=; b=DPlwYU91pHG2TRP+TouWPRpfSuo9C80R0NunXO5UE1Z3LC4rKwcLv5r8hpXC9AV5rc w60UZiEzzsmaqXnyCxJefJ1mM+AWND1ASYGpTpqDD+uK+bjsbkupRKEkVqRVA8KzvT0C H3SGu2SSPANPdbKgXREpqsa4rPj4k1Vrtzpmg= X-Forwarded-Encrypted: i=1; AJvYcCWRhZsAZ5KemSYVVMVbcaonRMuhi3f1WGkNng+Ur+0tBTy8UWL2bV8KitIXaFeWZe4c4XeO6pavk9zNT5s=@vger.kernel.org X-Received: by 2002:a05:620a:710b:b0:8c7:c25:9e53 with SMTP id af79cd13be357-8cbbd04021bmr612526285a.59.1772131647502; Thu, 26 Feb 2026 10:47:27 -0800 (PST) X-Received: by 2002:a05:620a:710b:b0:8c7:c25:9e53 with SMTP id af79cd13be357-8cbbd04021bmr612522385a.59.1772131646927; Thu, 26 Feb 2026 10:47:26 -0800 (PST) Received: from lvnvda4076.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8cbbf6f5c41sm255721485a.24.2026.02.26.10.47.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Feb 2026 10:47:26 -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: shuah@kernel.org, linux-kselftest@vger.kernel.org, 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, v3 2/2] selftests: drv-net: psp: add test for VLAN sub-interface Date: Thu, 26 Feb 2026 10:46:54 -0800 Message-ID: <20260226184654.3180648-3-kiran.kella@broadcom.com> X-Mailer: git-send-email 2.45.4 In-Reply-To: <20260226184654.3180648-1-kiran.kella@broadcom.com> References: <20260226184654.3180648-1-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/config | 1 + tools/testing/selftests/drivers/net/psp.py | 81 +++++++++++++++++++++- 2 files changed, 81 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/config b/tools/testing/sel= ftests/drivers/net/config index 77ccf83d87e0..e03676f1d993 100644 --- a/tools/testing/selftests/drivers/net/config +++ b/tools/testing/selftests/drivers/net/config @@ -3,6 +3,7 @@ CONFIG_DEBUG_INFO_BTF=3Dy CONFIG_DEBUG_INFO_BTF_MODULES=3Dn CONFIG_INET_PSP=3Dy CONFIG_IPV6=3Dy +CONFIG_VLAN_8021Q=3Dm CONFIG_NETCONSOLE=3Dm CONFIG_NETCONSOLE_DYNAMIC=3Dy CONFIG_NETCONSOLE_EXTENDED_LOG=3Dy diff --git a/tools/testing/selftests/drivers/net/psp.py b/tools/testing/sel= ftests/drivers/net/psp.py index 864d9fce1094..b3d00bb01816 100755 --- a/tools/testing/selftests/drivers/net/psp.py +++ b/tools/testing/selftests/drivers/net/psp.py @@ -9,6 +9,7 @@ import socket import struct import termios import time +import types =20 from lib.py import defer from lib.py import ksft_run, ksft_exit, ksft_pr @@ -18,6 +19,7 @@ from lib.py import KsftSkipEx from lib.py import NetDrvEpEnv, PSPFamily, NlError from lib.py import bkg, rand_port, wait_port_listen =20 +from lib.py import cmd, ip =20 def _get_outq(s): one =3D b'\0' * 4 @@ -570,6 +572,83 @@ 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] + """ + _init_psp_dev(cfg) + + try: + cmd("modprobe 8021q") + except Exception: + raise KsftSkipEx("VLAN (8021q) kernel module not available") + + vlan_id =3D 100 + local_ifname =3D f"{cfg.ifname}.{vlan_id}" + remote_ifname =3D f"{cfg.remote_ifname}.{vlan_id}" + + # Create VLAN interface on LOCAL side + ip(f"link add link {cfg.ifname} name {local_ifname} type vlan id {vlan= _id}") + defer(ip, f"link del {local_ifname}") + ip(f"addr add 192.0.2.21/24 dev {local_ifname}") + ip(f"-6 addr add 2001:db8::21/64 dev {local_ifname} nodad") + ip(f"link set {local_ifname} up") + + # Create VLAN interface on REMOTE side + ip(f"link add link {cfg.remote_ifname} name {remote_ifname} " + f"type vlan id {vlan_id}", host=3Dcfg.remote) + defer(ip, f"link del {remote_ifname}", host=3Dcfg.remote) + ip(f"addr add 192.0.2.22/24 dev {remote_ifname}", host=3Dcfg.remote) + ip(f"-6 addr add 2001:db8::22/64 dev {remote_ifname} nodad", + host=3Dcfg.remote) + ip(f"link set {remote_ifname} up", host=3Dcfg.remote) + + local_ifindex =3D ip(f"-j link show {local_ifname}", json=3DTrue)[0]['= ifindex'] + + vlan_cfg =3D types.SimpleNamespace( + ifname=3Dlocal_ifname, + ifindex=3Dlocal_ifindex, + remote_ifname=3Dremote_ifname, + addr_v=3D{"4": "192.0.2.21", "6": "2001:db8::21"}, + remote_addr_v=3D{"4": "192.0.2.22", "6": "2001:db8::22"}, + addr=3D"192.0.2.21", + remote_addr=3D"192.0.2.22", + pspnl=3Dcfg.pspnl, + psp_dev_id=3Dcfg.psp_dev_id, + remote=3Dcfg.remote, + comm_port=3Dcfg.comm_port, + comm_sock=3Dcfg.comm_sock, + ) + + s =3D _make_psp_conn(vlan_cfg, version=3D0) + 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 =3D vlan_cfg.pspnl.rx_assoc({ + "version": 0, + "dev-id": vlan_cfg.psp_dev_id, # PSP device on physical interface + "sock-fd": s.fileno() + }) + rx =3D rx_assoc['rx-key'] + tx =3D _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 =3D _send_careful(vlan_cfg, s, 100) + _check_data_rx(vlan_cfg, data_len) =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""" @@ -624,7 +703,7 @@ 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