From nobody Wed Oct 15 22:14:32 2025 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4cn53Y2ywRz6D4sg for ; Wed, 15 Oct 2025 22:14:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4cn53Y2TPWz3RHX for ; Wed, 15 Oct 2025 22:14:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1760566473; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=waAsqHMBohMpP8AgfQ2q8gOScct/sKRGx4rtu78aZA8=; b=L2WB5eneeMteGzGaQ1D2d4RlV7oEuTU1l2z0c2g6Se4ujXn41OBvb8OE1zWnMw127fcjAU w6WFMXlVF1H8xXqE5/Jqkr304QKIslaJpx+86Km+HXJSjN3dWQ9tH/67XXOojeik+2glum 5tCpNUzwTfdaaLNgtu4u4KMyhvNE6BAxv0ydCCoNm8za1Vzta2Ggz6biNNu0UmVPWMc/p+ CXH7tltk1A12b1XDlu7AdF1VIU3G3aPDZjN3G38aL+e8nikOcV60TJO8ragW5kkAifMQsF 8N+1JIGaB98yI2P7ymPyMIKd2Pd6gfA17C0IivZ0q7Td4c7LVFwVq6XLi5dxUA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1760566473; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=waAsqHMBohMpP8AgfQ2q8gOScct/sKRGx4rtu78aZA8=; b=G0c8+oRsEDlwuKjpaOjvKcOJiWPBDmlq894irw1MxIxAEZoBGk5fIwg0FSCkDwD3JFXODd zx2WqIGEXh39xMxnX0IdUYXZ4Ay9iBBIxvYuskjes2LeGCZhlSVaK0uivw0IWTPpckd5i8 aCCREEsWsb4B2jAfbVkK/Ost8a37kNI7yrQHUbkTRXtZYjc2j+Qkp/5bQ2nEbGaaVDjCAu gUQ05Q3ycRSGTAP/Z7QHh89C7Mq8xzlLkIVDovp5VfoE4qZzzUgE5cBeynPWi6YfmN47uH TmLvdHB+wzxCrSsoQeTKvuQH97r12EV34QVPISbxem+ymqtqPHQ5o4NkuJ2rmQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1760566473; a=rsa-sha256; cv=none; b=N0ZMLOcEGPGvxF9X43mxAQJ3ybJ4/UVMtBtfRMzIUXKg6sGAcT6iV0V3nyzZxq4rnUxyhu nOkBPuChz29il6NuiYuqYphV1kdr+/UcgqsxIMUZJB2gWGgdQ7eUqK8Ns8UTu80goS0h2D QOcfJgmzNYbhtMXFGj1NxRRtprF0Kr1eM7URw8E0AsCNyweloBrjmZfS7Le5UwaOkkyx/K QERMLJZ0XiI0WPpEf8ID21JwjUC81G9JRVpA4qklTwGXxoQPDQGNY96CajlI02wm0NUpUw +D75okByo3sq2X8SvoFxCKgDXYk7IARTLpvXauhLvyhTiU9s0ZdkaBO83yU65g== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4cn53Y259ZzxRX for ; Wed, 15 Oct 2025 22:14:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 59FMEXLm001381 for ; Wed, 15 Oct 2025 22:14:33 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 59FMEXEj001380 for net@FreeBSD.org; Wed, 15 Oct 2025 22:14:33 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 276760] vtnet driver incorrectly calculates checksums Date: Wed, 15 Oct 2025 22:14:32 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.2-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: tuexen@freebsd.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: tuexen@freebsd.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276760 --- Comment #29 from Michael Tuexen --- (In reply to vova from comment #28) So you are basically saying, the it doesn't matter if you use pf or not. Th= at is great. Let us focus on the vtnet scenario (not the jail) and on the receive side. There is a substantial difference triggered by the offload. I did the same = test locally and got less bandwidth than you, about 260Mbps. But it was consiste= nt on multiple runs and enabling or disabling the offload did not show an impa= ct. The system was not CPU limited. So could you measure that a couple of times and see if disabling offload roughly doubles the receive rate? Could you also prove the output of sysctl dev.vtnet.0 and sysctl hw.vtnet? --=20 You are receiving this mail because: You are on the CC list for the bug.=