From patchwork Sun Oct 31 04:59:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Melnichenko X-Patchwork-Id: 12594943 X-Patchwork-Delegate: kuba@kernel.org 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 365D4C4167D for ; Sun, 31 Oct 2021 05:00:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C4DA60EB4 for ; Sun, 31 Oct 2021 05:00:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230121AbhJaFCs (ORCPT ); Sun, 31 Oct 2021 01:02:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229853AbhJaFCo (ORCPT ); Sun, 31 Oct 2021 01:02:44 -0400 Received: from mail-lf1-x136.google.com (mail-lf1-x136.google.com [IPv6:2a00:1450:4864:20::136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01B6DC061570 for ; Sat, 30 Oct 2021 22:00:13 -0700 (PDT) Received: by mail-lf1-x136.google.com with SMTP id bu18so12471153lfb.0 for ; Sat, 30 Oct 2021 22:00:12 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=P85tINO6/x7BoGgJyTZxyTXKyP4RCHrmV1AQKxfeWJE=; b=K3GsKwdH/8LPW8YvS2ThbBMjgIpc/wfSPG9So9Q4zUu0FU+hfJJOhK1NNbsVHmyi5o caJNoRHkf0TmBl69GASb4UQWBvcpV7xjQUuB00m0dXNn20DIofK3IlhAFFsM9wmRbgjn sox3xNvSnqdRk4/O2/EGNoAbRJwaHII35SDF59vigu8C7LPQOuRf6v9FA9itxOnH77IA /lp3dabdM/IGyrPUqISmTCkDUPA6Yamg/SFwShMuovNA4tsx7abmIYZ9NNNyhvAnSLRu d3w0oPC7G2eIa8Q83Ka9jXzpwOR/QCB0tQoEhmuO88sNcn2axbHUb6z4y32V5s2KSEgn WnZg== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=P85tINO6/x7BoGgJyTZxyTXKyP4RCHrmV1AQKxfeWJE=; b=aLcSfjbsZH15jgwbT/f/LNjdJC3oQzBKRajbtABSTlCuxbFyIx9SxupoWI+F+T9yVA y3P+0pUAh3ZZfwWB0chD3yo4Ek4BJ1LmiuzhTpcnBD14ZP7FS4WN/NYawhoi/Am5gwYY hAaG+ccbeL2vWkGJgL0dAd9mCk+syKRhMe+Zqracr3bUMrQ9hlhDALMWgvaxWIeaEk3A xGj84sqnD2uOo2jwXXyZHdLJ/FxLhseTF09pJLEV/NWJ+KgxYvzNMKfA8CAOeGjWQZOQ azE0GHM9TDCKYzmLKJZ75MFMsN+RoZJLMJeyWwB295apYlKNdEQexzMUHn3oTXh3VsvW FhJw== X-Gm-Message-State: AOAM530wd3Zvn7MQdmLP83LdP4jp791sxbAjtxTUBAY42kQ0JYXjRAk4 9rgCqsrIzMnk83YSNZrYuwQ6XA== X-Google-Smtp-Source: ABdhPJy4OWZQTeD5aF2yM3mtFrNa3B26deIualH1okDZv1ZHqVGOWFX7pGvlZQuveOHqVFaEGSlQhA== X-Received: by 2002:a05:6512:31d2:: with SMTP id j18mr197221lfe.229.1635656411408; Sat, 30 Oct 2021 22:00:11 -0700 (PDT) Received: from navi.cosmonova.net.ua ([95.67.24.131]) by smtp.gmail.com with ESMTPSA id v26sm444766lfo.125.2021.10.30.22.00.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 30 Oct 2021 22:00:11 -0700 (PDT) From: Andrew Melnychenko To: mst@redhat.com, jasowang@redhat.com, davem@davemloft.net, kuba@kernel.org Cc: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, yuri.benditovich@daynix.com, yan@daynix.com Subject: [RFC PATCH 4/4] drivers/net/virtio_net: Added RSS hash report control. Date: Sun, 31 Oct 2021 06:59:59 +0200 Message-Id: <20211031045959.143001-5-andrew@daynix.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211031045959.143001-1-andrew@daynix.com> References: <20211031045959.143001-1-andrew@daynix.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Added set_hash for skb. Also added hashflow set/get callbacks. Virtio RSS "IPv6 extensions" hashes disabled. Also, disabling RXH_IP_SRC/DST for TCP would disable then for UDP. TCP and UDP supports only: ethtool -U eth0 rx-flow-hash tcp4 sd RXH_IP_SRC + RXH_IP_DST ethtool -U eth0 rx-flow-hash tcp4 sdfn RXH_IP_SRC + RXH_IP_DST + RXH_L4_B_0_1 + RXH_L4_B_2_3 Signed-off-by: Andrew Melnychenko --- drivers/net/virtio_net.c | 159 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index cff7340f40bb..b1ed373d942b 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -232,6 +232,8 @@ struct virtnet_info { bool has_rss_hash_report; u8 rss_key_size; u16 rss_indir_table_size; + u32 rss_hash_types_supported; + u32 rss_hash_types_saved; /* Has control virtqueue */ bool has_cvq; @@ -2272,6 +2274,131 @@ static void virtnet_init_default_rss(struct virtnet_info *vi) netdev_rss_key_fill(vi->ctrl->rss.key, vi->rss_key_size); } +static void virtnet_get_hashflow(const struct virtnet_info *vi, struct ethtool_rxnfc *info) +{ + info->data = 0; + switch (info->flow_type) { + case TCP_V4_FLOW: + if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_TCPv4) { + info->data = RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + } else if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_IPv4) { + info->data = RXH_IP_SRC | RXH_IP_DST; + } + break; + case TCP_V6_FLOW: + if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_TCPv6) { + info->data = RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + } else if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_IPv6) { + info->data = RXH_IP_SRC | RXH_IP_DST; + } + break; + case UDP_V4_FLOW: + if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_UDPv4) { + info->data = RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + } else if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_IPv4) { + info->data = RXH_IP_SRC | RXH_IP_DST; + } + break; + case UDP_V6_FLOW: + if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_UDPv6) { + info->data = RXH_IP_SRC | RXH_IP_DST | + RXH_L4_B_0_1 | RXH_L4_B_2_3; + } else if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_IPv6) { + info->data = RXH_IP_SRC | RXH_IP_DST; + } + break; + case IPV4_FLOW: + if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_IPv4) + info->data = RXH_IP_SRC | RXH_IP_DST; + + break; + case IPV6_FLOW: + if (vi->rss_hash_types_saved & VIRTIO_NET_RSS_HASH_TYPE_IPv4) + info->data = RXH_IP_SRC | RXH_IP_DST; + + break; + default: + info->data = 0; + break; + } +} + +static bool virtnet_set_hashflow(struct virtnet_info *vi, struct ethtool_rxnfc *info) +{ + u64 is_iphash = info->data & (RXH_IP_SRC | RXH_IP_DST); + u64 is_porthash = info->data & (RXH_L4_B_0_1 | RXH_L4_B_2_3); + u32 new_hashtypes = vi->rss_hash_types_saved; + + if ((is_iphash && (is_iphash != (RXH_IP_SRC | RXH_IP_DST))) || + (is_porthash && (is_porthash != (RXH_L4_B_0_1 | RXH_L4_B_2_3)))) { + return false; + } + + if (!is_iphash && is_porthash) + return false; + + switch (info->flow_type) { + case TCP_V4_FLOW: + case UDP_V4_FLOW: + case IPV4_FLOW: + new_hashtypes &= ~VIRTIO_NET_RSS_HASH_TYPE_IPv4; + if (is_iphash) + new_hashtypes |= VIRTIO_NET_RSS_HASH_TYPE_IPv4; + + break; + case TCP_V6_FLOW: + case UDP_V6_FLOW: + case IPV6_FLOW: + new_hashtypes &= ~VIRTIO_NET_RSS_HASH_TYPE_IPv6; + if (is_iphash) + new_hashtypes |= VIRTIO_NET_RSS_HASH_TYPE_IPv6; + + break; + default: + break; + } + + switch (info->flow_type) { + case TCP_V4_FLOW: + new_hashtypes &= ~VIRTIO_NET_RSS_HASH_TYPE_TCPv4; + if (is_porthash) + new_hashtypes |= VIRTIO_NET_RSS_HASH_TYPE_TCPv4; + + break; + case UDP_V4_FLOW: + new_hashtypes &= ~VIRTIO_NET_RSS_HASH_TYPE_UDPv4; + if (is_porthash) + new_hashtypes |= VIRTIO_NET_RSS_HASH_TYPE_UDPv4; + + break; + case TCP_V6_FLOW: + new_hashtypes &= ~VIRTIO_NET_RSS_HASH_TYPE_TCPv6; + if (is_porthash) + new_hashtypes |= VIRTIO_NET_RSS_HASH_TYPE_TCPv6; + + break; + case UDP_V6_FLOW: + new_hashtypes &= ~VIRTIO_NET_RSS_HASH_TYPE_UDPv6; + if (is_porthash) + new_hashtypes |= VIRTIO_NET_RSS_HASH_TYPE_UDPv6; + + break; + default: + break; + } + + if (new_hashtypes != vi->rss_hash_types_saved) { + vi->rss_hash_types_saved = new_hashtypes; + vi->ctrl->rss.table_info.hash_types = vi->rss_hash_types_saved; + if (vi->dev->features & NETIF_F_RXHASH) + return virtnet_commit_rss_command(vi); + } + + return true; +} static void virtnet_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) @@ -2557,6 +2684,27 @@ static int virtnet_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info, switch (info->cmd) { case ETHTOOL_GRXRINGS: info->data = vi->curr_queue_pairs; + break; + case ETHTOOL_GRXFH: + virtnet_get_hashflow(vi, info); + break; + default: + rc = -EOPNOTSUPP; + } + + return rc; +} + +static int virtnet_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info) +{ + struct virtnet_info *vi = netdev_priv(dev); + int rc = 0; + + switch (info->cmd) { + case ETHTOOL_SRXFH: + if (!virtnet_set_hashflow(vi, info)) + rc = -EINVAL; + break; default: rc = -EOPNOTSUPP; @@ -2585,6 +2733,7 @@ static const struct ethtool_ops virtnet_ethtool_ops = { .get_rxfh = virtnet_get_rxfh, .set_rxfh = virtnet_set_rxfh, .get_rxnfc = virtnet_get_rxnfc, + .set_rxnfc = virtnet_set_rxnfc, }; static void virtnet_freeze_down(struct virtio_device *vdev) @@ -2837,6 +2986,16 @@ static int virtnet_set_features(struct net_device *dev, vi->guest_offloads = offloads; } + if ((dev->features ^ features) & NETIF_F_RXHASH) { + if (features & NETIF_F_RXHASH) + vi->ctrl->rss.table_info.hash_types = vi->rss_hash_types_saved; + else + vi->ctrl->rss.table_info.hash_types = 0; + + if (!virtnet_commit_rss_command(vi)) + return -EINVAL; + } + return 0; }