From nobody Wed Oct 15 07:03:57 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 4cmhrw5c0cz6CrjF for ; Wed, 15 Oct 2025 07:04:00 +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 4cmhrw57kRz3PT2 for ; Wed, 15 Oct 2025 07:04:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1760511840; 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=0yZgtme5t3bGSVtap2eymdDP5Gutp6L0k/gADU55cC4=; b=JWpCaKlpiZf16IBzcyadVmn3ZOpUbK5W6Pd5C5P1vxQ0AmKSm3xJW6RIupLu+iW/fhwfA8 Z0WzP3iTDDkytEekgD9JhAL6RJgokbqz0tI6lPkBCQ2MDzNOJ6ghw+1ybjwVAVSBDywccA rVHCIwl9VeTF4tEF4q+9JGrD0PxcBiZspjuvfIAzwzg3s3JYVksb02Hl3StAsrCUUplGgZ X+c90bBoB32MLhV5fjA4viWPrBq/oCY0iYO3P2Mu9aSZYFVdrSEsIpn4OwD7A7mHvj32Th cnD3OqMQy9ta3M3KCeapHoJkoNaOxc6OoKWQ2NsOJVXwY42r0gWYDTE9YzLSBg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1760511840; 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=0yZgtme5t3bGSVtap2eymdDP5Gutp6L0k/gADU55cC4=; b=x49Kutwcmf9/+SruZM2cRnan7ia1QeNjnsiviuGi01cp6rCNL9VWKHSmHaZakEmClYtBre pKZAL1DemybWCdtqY7sQRKbBcFd+ud/iKE80XNGz3dFqIcdaJ1GF3KZyeLDdLc4DZXmVS7 NU1qoXtMrHdb3f+cIDH2G1mG3P9tXgVJqrWbpMW4gUEQNWOaMcaq2LQ87+XuAVBUee4EsB TD9CXXd9VY9GiDg2vARKqZSyo74B0UEmAkXndO5gSDvUusB9jLKaRbTvncZ7SsQ8oyzsB2 Dcb2Y2aMYVxEhbm5Q8Lg2nH0P8WAfq1w8tMC9MrAaM95XLMSAOTiM7XtY6qAeQ== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1760511840; a=rsa-sha256; cv=none; b=uKGrXnu+w0WvGIG9vmOdUhyIvqFSVQLb5aM2S4RCRaPNkG4sH6iQlWqbswBq3JEJfDmQUs O6B3WOOyypib67xXS6OvogWYJ/qnFIzHs3/IJ/UBLq8RutoeTOYrbjXvw0/MqJMUzXe3AA vfK1QYr9JZl+LRqJpzXBQ20YF8J0Jv3WKfa7NQ1+3Qfpbb9jLbQdIwAxSYNIXLx7uM/ol/ ox9XG3oQa5FVw2l4sghEqorChw+Oj7eW5ky64UYFT7xe/b7+QRHyHPQoRI42yPEs4Dz2Hh F5mzoruJpyvMQ50YfXO4cam50x9Uh8ngh4XaKH938HUmC9+X9aEC7Ojgkh0EEA== 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 4cmhrw4fnLzCjc for ; Wed, 15 Oct 2025 07:04:00 +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 59F740qZ082957 for ; Wed, 15 Oct 2025 07:04:00 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 59F740JW082956 for net@FreeBSD.org; Wed, 15 Oct 2025 07:04:00 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 07:03:57 +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 #20 from Michael Tuexen --- (In reply to vova from comment #19) That is really interesting. If I summarize it correctly, we have: vtnet: 14.3 stable/14 send w/o offloading 789 772 send w/ offloading 485 523 recv w/o offloading 1938 2052 recv w/ offloading 719 972 vnet: 14.3 stable/14 send w/ offloading 1595 1624 send w/o offloading 1425 1584 recv w/ offloading 166 1813 recv w/o offloading 1504 1085 (stable/14 of October 9th; Speed is in Mbps) What is your setup? I would like to be able to reproduce this locally? Are you just running the speedtests in a VM using vtnet? Or are other VMs d= oing forwarding involved? What is your setup with the vnet? Which interfaces are used in that case. Thanks for testing! --=20 You are receiving this mail because: You are on the CC list for the bug.=