From owner-freebsd-virtualization@freebsd.org Wed Apr 4 20:17:16 2018 Return-Path: Delivered-To: freebsd-virtualization@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C9A1FF7327F for ; Wed, 4 Apr 2018 20:17:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 682417195A for ; Wed, 4 Apr 2018 20:17:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id B32B720A3 for ; Wed, 4 Apr 2018 20:17:15 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id w34KHFpL020240 for ; Wed, 4 Apr 2018 20:17:15 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id w34KHFEC020237 for freebsd-virtualization@FreeBSD.org; Wed, 4 Apr 2018 20:17:15 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: freebsd-virtualization@FreeBSD.org Subject: [Bug 215737] [bhyve] utilizing virtio-net truncates jumbo frames at 4084 bytes length Date: Wed, 04 Apr 2018 20:17:14 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: misc X-Bugzilla-Version: 11.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: bugzilla.freebsd@omnilan.de X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Apr 2018 20:17:17 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215737 --- Comment #9 from Harald Schmalzbauer --- (In reply to P Kern from comment #8) *offtopic, vmxnet3 specific only, nothing PR related in this comment*: It's correct that if_vmx(4) does not mention MTU or "jumbo" frames, but I w= as quiet sure it _does_ support 9k frames =E2=80=93 just verified positive (st= able/11 on ESXi6.5)! if_vmx(4) has been improved over the time, but it still lacks ALTQ support. And vmx3f(4) is still a bit more efficient. Else, if_vmx(4) is featurewise on par with vmx3f(4). Unfortunately vmx3f(4) isn't supported by VMware any longer. I made a patch which allows vmx3f(4) to be compiled on FreeBSD-11, and it a= lso seems to be stable _without_ ALTQ. ALTQ causes panics!!! Unfortunately my skills/time don't last to fix. Here's the compile-patch in case somebody wants to take over: ftp://ftp.omnilan.de/pub/FreeBSD/OmniLAN/vmware-esxi_kernel-modules/10.1.5/= FreeBSD-11_vmxnet3-Tools_10.1.5-source.patch -harry --=20 You are receiving this mail because: You are the assignee for the bug.=