From nobody Sat Aug 12 02:58:43 2023 X-Original-To: xen@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 4RN52r627Jz4q9cR for ; Sat, 12 Aug 2023 02:58:44 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4RN52r2Pglz4dq5 for ; Sat, 12 Aug 2023 02:58:44 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1691809124; 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; 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Sat, 12 Aug 2023 02:58:44 +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 37C2wiLl052863 for ; Sat, 12 Aug 2023 02:58:44 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 37C2witF052862 for xen@FreeBSD.org; Sat, 12 Aug 2023 02:58:44 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: xen@FreeBSD.org Subject: [Bug 273046] xn: xen netfront does LRO even if packet forwarding is enabled Date: Sat, 12 Aug 2023 02:58:43 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: linimon@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: xen@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: assigned_to 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 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-xen List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-xen@freebsd.org X-BeenThere: freebsd-xen@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D273046 Mark Linimon changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|bugs@FreeBSD.org |xen@FreeBSD.org --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Sat Aug 12 11:57:01 2023 X-Original-To: xen@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 4RNJzx5YJfz4mRlh for ; Sat, 12 Aug 2023 11:57:01 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4RNJzx2LJkz4f8x for ; 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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 4RNJzx1PCzz53f for ; Sat, 12 Aug 2023 11:57:01 +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 37CBv12O079658 for ; Sat, 12 Aug 2023 11:57:01 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 37CBv1vR079657 for xen@FreeBSD.org; Sat, 12 Aug 2023 11:57:01 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: xen@FreeBSD.org Subject: [Bug 273046] xn: xen netfront does LRO even if packet forwarding is enabled Date: Sat, 12 Aug 2023 11:57:01 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: dfr@rabson.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: xen@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 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-xen List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-xen@freebsd.org X-BeenThere: freebsd-xen@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D273046 --- Comment #1 from dfr@rabson.org --- I tried to fix this today by adding logic to stop requesting LRO from the backend when forwarding is enabled. Unfortunately, the code which sets up features for the backend runs long before the value of net.inet.ip.forwardi= ng is set (via sysctl.conf in my test). If LRO is disabled manually, the driver re-initialises the backend state. There seems to be no way for the driver to detect changes to the forwarding state. The linux kernel seems to actively disable LRO on all devices when forwarding is enabled. Also, we have confirmed that a similar issue of slow network throughput for= vmm jails affects the vtnet driver for VMs running as guests on Proxmox hosts w= hich can also be mitigated by disabling LRO. Perhaps a better assignee for this should be freebsd-net? --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Sat Aug 12 12:01:36 2023 X-Original-To: xen@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 4RNK5D1GP8z4mRsT for ; Sat, 12 Aug 2023 12:01:36 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4RNK5C66k3z4fb3 for ; Sat, 12 Aug 2023 12:01:35 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1691841695; 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=wXjc2szkN9S2djUTi/Sauccqi1wMvFBhCCkM2iDWPfg=; b=CaUluJEN4I24j+M1EUQfz7jHKR8EqoLzuKoylQKCst/DGhLq5HkYKW3F2zEgIutHjn85bu YPL6Eh541+pSrHgp29czzQSKMVFkfuD3k3F1/SEkfs0DIEDC3yqiQ2WtQ8CiIDDYgFrEJf IZgP+GHdda7QtvARG+elB7JytwVcB7VMWvFWCbSza4Wa95vxDMogkuB8qCVYhDRaHGk3XT yuyojjTwYJCIdQitZyNqpcn0FIt29GWt5z+Xr5wbI2fX332eCJFHxxH4haVjZp0O9XzAlH bTh68urKrynnIBbfyInXOFKV4d3GnFn3CKOxAYhbvo34LGTI62K8Z314dWVfcw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1691841695; a=rsa-sha256; cv=none; b=u0fAktGHd15SqbRNTFvMWGuavkv7MwHoKQLqSffMHFKAz6Ck4CxHMVkVjmLFxZDpNMxbno z35wJx5zzTk0ip8BaAX5e2ThZVV5kUF1aXOXLcxKD1TRwWIMkv5tP2kNw7m7SXIMip7l9T P/4vY+gn9XSdFIqO9UgJkVcbtSFIR7PIcR2cuLiVExTftFpHU6eBAVkWzLqQVneocCCLZ5 8ZuNqkJqBvEKTxWE5ZpiNueD/88+nrDXdA8VmpQjaY9lwxcqGmBb3a2scNi/2cjz2fPOz7 GjnaCgPklIC3DMr08V+OFefQKXygj0mgruRjMham1/z2002BBTKxbplqSvFZqA== 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 4RNK5C59tmz542 for ; Sat, 12 Aug 2023 12:01:35 +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 37CC1ZhJ086041 for ; Sat, 12 Aug 2023 12:01:35 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 37CC1ZnZ086040 for xen@FreeBSD.org; Sat, 12 Aug 2023 12:01:35 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: xen@FreeBSD.org Subject: [Bug 273046] xn: xen netfront does LRO even if packet forwarding is enabled Date: Sat, 12 Aug 2023 12:01:36 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: royger@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: xen@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc 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 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-xen List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-xen@freebsd.org X-BeenThere: freebsd-xen@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D273046 Roger Pau Monn=C3=A9 changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |royger@freebsd.org --- Comment #2 from Roger Pau Monn=C3=A9 --- Can you confirm that manually disabling LRO on the interface using ifconfig solves the issue? How do other (non virt maybe?) drivers deal with this? I'm currently on PTO, will try to take a look when I'm back (on the 20th of August). --=20 You are receiving this mail because: You are the assignee for the bug.= From nobody Sat Aug 12 12:11:29 2023 X-Original-To: xen@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 4RNKJd2jwhz4mSDm for ; Sat, 12 Aug 2023 12:11:29 +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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4RNKJd10F2z4fwk for ; Sat, 12 Aug 2023 12:11:29 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1691842289; 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=GiZcZKwivmzLic7JTntRcqCZdBDP5GxYL1qSitooMt8=; b=d2kVGkQ7WyTefUCZbeuDfqhQW86219rDJLXMJhTsUehDSg2OY6go1JuPXPYzWHxvxZMsgx ht1WOx55dZa6tkATFxswsXQA2xvov1dEsSZ20wIofnX7Ro5Jl+QqQbL3Jyvy2AXxGBFCD6 TbTN20kj2gYXKWBLDdhXVlmL7g5eyfcnur1XycIRp8QCuySYxvteEIdAFYPjsVuch1/YAZ UuDZz5kO+qGOZw69kYZRuE/wItZ+ONsScrKT4qmhAaNWQWJOKseF7B5QAd2cTywborupnG T+BOOzoJrtTUwzDkoVfBSHCKjNfInkWB7pIaiH83LupFMAnT4/6rPNYS7+gqMg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1691842289; a=rsa-sha256; cv=none; b=dBn/8q7j59VSMOjXy+v7rIG6i1HtRCh66qcuq9mJmj7Ncm4oGyy7171GOJo0QYQOx8XH4n YF5dfr0icgUhfnp4J+/W5caa2XpjNvTdRkiJpaL2xsdm7Aav3opdiXmq32orJWv6DxUFRx 6SU5uT2Yy2XzoI17/l5Tep1cKa0mRsOTsLxqVZ0/A9boo2/m6DzO/AlsWSVHK57P1a5f3d u9JA7QQo+tt2rcY6ePgHbgalI1VzInK35r21UxN9r2J4nI0tOVaVKx8mhDwKuKYvqh5gz3 GY3EfCCLqG8UGPFTXhUIpwuSVItsIM92kEyEMku5IdyLFW4wSvZGR9abclFQlQ== 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 4RNKJd049Vz4km for ; Sat, 12 Aug 2023 12:11:29 +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 37CCBSqt012707 for ; Sat, 12 Aug 2023 12:11:28 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 37CCBS2r012706 for xen@FreeBSD.org; Sat, 12 Aug 2023 12:11:28 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: xen@FreeBSD.org Subject: [Bug 273046] xn: xen netfront does LRO even if packet forwarding is enabled Date: Sat, 12 Aug 2023 12:11:29 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: dfr@rabson.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: xen@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 List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-xen List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-xen@freebsd.org X-BeenThere: freebsd-xen@freebsd.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D273046 --- Comment #3 from dfr@rabson.org --- Manually disabling LRO using something like 'ifconfig xn0 -lro' does solve = the issue. I can see logic in sys/netinet/tcp_lro.c which checks for forwarding in tcp_lro_rx_common but I think that code is only active for software LRO. If= lib also checks before calling tcp_lro_rx but that seems also to be only effect= ive for software LRO. So far I haven't been able to figure out how any other driver manages this.= I'm not even 100% sure which drivers support hardware LRO where coalescing happ= ens inside the NIC. --=20 You are receiving this mail because: You are the assignee for the bug.=