From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14F46C4167D for ; Mon, 28 Mar 2022 18:02:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244936AbiC1SEF (ORCPT ); Mon, 28 Mar 2022 14:04:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39326 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245146AbiC1SDX (ORCPT ); Mon, 28 Mar 2022 14:03:23 -0400 Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1601A47380 for ; Mon, 28 Mar 2022 11:01:42 -0700 (PDT) Received: by mail-lj1-x22d.google.com with SMTP id u3so20356499ljd.0 for ; Mon, 28 Mar 2022 11:01:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=uuYv067X4kT+NOzbPXQ219scQGqPB4cAH5gxcRBn5ME=; b=RyjbhIYZZ7QEgJfc3+9Bvvfbd8rZqEPj/OObh6rKDftThCHs1swjSvwR2LsVN2SMXn ACeJlGqAX0jZU6F0xlnzpYw7hbagCAR/zZLV+JNklkWGwSwvEW1KcmO7l78PUUW1OZgs wLtAHxeU1GiXwYZ5dlr2HBceQA4EVjrnVyjsofmW1YxlcOPqS8S+n+0/Cybudrx+USc7 rYeomXkg6+VSjJSzSesLobXvpvMInAmwMTitRxEfPaI0eQ/8COOsr21qosO8ck+XJ7zq UJEaVw4GqdoS/oHfy7t42zHNWpI34jr4HGSu20CZOZJk3tulDkJdnNzdjdbaxmRyiwFS UPWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=uuYv067X4kT+NOzbPXQ219scQGqPB4cAH5gxcRBn5ME=; b=wFUl/r7hzEy7ITCpF/STTMzUZOa4aCB7pJ6rmmvednBimsmw0K3cZvu7+hT3rZZbvo KSnN4cX2WDO0bZKMaP9F4C6PhlqEKSuOg3kwDWp2GudWnV+deu0bRH+c3IfvkELKgsTS XCeN0QeNVsZzplNgCpXTx37owYNF6HjIfej8UQooe4cSCRm5mtLSbL2GRv/pzZQC2JWD El8XCqu6BgsMlQepXD9G03UgNt4ftB/fgM7fOpYYJXaxem6UeQRpykS/nk2ZDkW3EViu aH4wLF8B5rtPjYd9mWyGLnd8FUoTtVjhm16lAar60vr72TK9Hz96tedxv0hPzMvSPWJe Ms+Q== X-Gm-Message-State: AOAM532dozkxDeTPN2wDGjkj0/j1g9Ysu2CC12IVRlp5Z6WRsAWypeXk WI5XdTpa14+KNOKytEFkvcEecw== X-Google-Smtp-Source: ABdhPJyshjbv5zxOBh3CePhb4vs8HHNCKWvlGyNfSZ0PMMK0RCvdxXijXOCiAixCaIl0voXdnRAxrA== X-Received: by 2002:a05:651c:17a3:b0:245:f39e:f2d2 with SMTP id bn35-20020a05651c17a300b00245f39ef2d2mr22295503ljb.490.1648490500316; Mon, 28 Mar 2022 11:01:40 -0700 (PDT) Received: from localhost.localdomain (host-188-190-49-235.la.net.ua. [188.190.49.235]) by smtp.gmail.com with ESMTPSA id a4-20020a2eb164000000b0024988e1cfb6sm1801559ljm.94.2022.03.28.11.01.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Mar 2022 11:01:39 -0700 (PDT) From: Andrew Melnychenko To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org Cc: kuba@kernel.org, davem@davemloft.net, jasowang@redhat.com, mst@redhat.com, yan@daynix.com, yuri.benditovich@daynix.com Subject: [PATCH v5 0/4] RSS support for VirtioNet. Date: Mon, 28 Mar 2022 20:53:32 +0300 Message-Id: <20220328175336.10802-1-andrew@daynix.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Virtio-net supports "hardware" RSS with toeplitz key. Also, it allows receiving calculated hash in vheader that may be used with RPS. Added ethtools callbacks to manipulate RSS. Technically hash calculation may be set only for SRC+DST and SRC+DST+PORTSRC+PORTDST hashflows. The completely disabling hash calculation for TCP or UDP would disable hash calculation for IP. RSS/RXHASH is disabled by default. Changes since v4: * Refactored code. * Fixed sparse warnings, there would be warnings for using restricted fields in vnet header structure. Changes since v3: * Moved hunks a bit. * Added indirection table zero size check for hash report only feature. * Added virtio_skb_set_hash() helper instead of in-place routine. Changes since v2: * Fixed issue with calculating padded header length. During review/tests, there was found an issue that will crash the kernel if VIRTIO_NET_F_MRG_RXBUF was not set. (thx to Jason Wang ) * Refactored the code according to review. Changes since v1: * Refactored virtnet_set_hashflow. * Refactored virtio_net_ctrl_rss. * Moved hunks between patches a bit. Changes since rfc: * Code refactored. * Patches reformatted. * Added feature validation. Andrew (1): drivers/net/virtio_net: Added RSS hash report control. Andrew Melnychenko (3): drivers/net/virtio_net: Fixed padded vheader to use v1 with hash. drivers/net/virtio_net: Added basic RSS support. drivers/net/virtio_net: Added RSS hash report. drivers/net/virtio_net.c | 389 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 376 insertions(+), 13 deletions(-) -- 2.35.1