From patchwork Fri Mar 20 11:57:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuri Benditovich X-Patchwork-Id: 11448901 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 38FCE92A for ; Fri, 20 Mar 2020 12:00:32 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0E7B420732 for ; Fri, 20 Mar 2020 12:00:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=daynix-com.20150623.gappssmtp.com header.i=@daynix-com.20150623.gappssmtp.com header.b="l3aEuyvv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0E7B420732 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=daynix.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:51568 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFGKF-00044S-6a for patchwork-qemu-devel@patchwork.kernel.org; Fri, 20 Mar 2020 08:00:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52632) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFGHt-0007jA-KD for qemu-devel@nongnu.org; Fri, 20 Mar 2020 07:58:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jFGHs-0000I5-9z for qemu-devel@nongnu.org; Fri, 20 Mar 2020 07:58:05 -0400 Received: from mail-wm1-x344.google.com ([2a00:1450:4864:20::344]:39955) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jFGHs-0000Gz-3e for qemu-devel@nongnu.org; Fri, 20 Mar 2020 07:58:04 -0400 Received: by mail-wm1-x344.google.com with SMTP id a81so227850wmf.5 for ; Fri, 20 Mar 2020 04:58:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=WOUtMRnFxKV7Y8XZ7UkZhOgeNFYtSpzSIraASB9IW38=; b=l3aEuyvviKZ1VNKuQM7YmXy/hTxq6TpX/yZGb8g2XLg58AaIfB4V47Ht2GVad556fj wpDl8J6g99Qe1aOOrdKaCedKuJYVM9PYCN4VchYqZZwTFZxtkpjisbA7VE6kHrhnjxYD ZIKHonj9LJjMpJfMufP60my/VE30AD6q3MS4kSIS6RZhGXleWh1FYDzjG9B84p1bGrNX cD/SdGMyFfv8sleHyU1KmtDYnwji3BmAq8V6VX7ewIC+5SaufdDVc/RYSV9CNaiyOml+ r1+DlAj9t+1DLOsiY6N5+Qvli9Mg8yl29oGR3x/8qp/o4+HIEeQ/j4dCt/l2Wh7ikHVS qOdA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=WOUtMRnFxKV7Y8XZ7UkZhOgeNFYtSpzSIraASB9IW38=; b=DAa6/upEx9FKMzuVm151qWB8/DIxG96JqQbgo3V7wxnZPFcawZNc0eOcy7JaLm/8kg td63XsBKwL45muYP7n2rtiZuAUO1k6eNcIx2dvccxYqghtHiIRAcOgkd3pInNc6PXeAv QA9Dcbj+7rn1WZYu1kT/BIp8+UzEk1TP1kZQ2KesjfTZvGxVNulgo/5VXhoNDP8F2jz9 Jrr5V2XlrGmlHfa+opLT2hAaOWuZfcvS/DKKjccMWddzG/hHAZHuSMnLsOB90Rf7d072 iykEkVqfvkexRTLGbVNnSP77SG9HU8gEHkwP/pSDBGVJobGY30+f0KL+dvcKLRutkryA LsJA== X-Gm-Message-State: ANhLgQ0+gXt8//0XF9iMhNTNB21qapCM+OH9M/Yg/70D6VAU+hx5TFKk w+GZryr4SNLz/lrHVYBjklg8F+rT+Jxe5w== X-Google-Smtp-Source: ADFU+vsMih/Z1Hzhy5UAWRBdehN8Os4rSMDHr5OcPCGv5XMG0QHFQBWdDsJPcjGDu0uLwCGw7GpXfA== X-Received: by 2002:a1c:b7c2:: with SMTP id h185mr10074369wmf.67.1584705482684; Fri, 20 Mar 2020 04:58:02 -0700 (PDT) Received: from f2.redhat.com (bzq-79-179-79-224.red.bezeqint.net. [79.179.79.224]) by smtp.gmail.com with ESMTPSA id c18sm6637645wrx.5.2020.03.20.04.58.01 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 20 Mar 2020 04:58:02 -0700 (PDT) From: Yuri Benditovich To: qemu-devel@nongnu.org, mst@redhat.com, jasowang@redhat.com, quintela@redhat.com, dgilbert@redhat.com Subject: [PATCH v6 3/7] virtio-net: implement RX RSS processing Date: Fri, 20 Mar 2020 13:57:47 +0200 Message-Id: <20200320115751.19446-4-yuri.benditovich@daynix.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200320115751.19446-1-yuri.benditovich@daynix.com> References: <20200320115751.19446-1-yuri.benditovich@daynix.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::344 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: yan@daynix.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" If VIRTIO_NET_F_RSS negotiated and RSS is enabled, process incoming packets, calculate packet's hash and place the packet into respective RX virtqueue. Signed-off-by: Yuri Benditovich --- hw/net/virtio-net.c | 88 +++++++++++++++++++++++++++++++++- include/hw/virtio/virtio-net.h | 1 + 2 files changed, 87 insertions(+), 2 deletions(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 6d21922746..de2d68d4ca 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -42,6 +42,7 @@ #include "trace.h" #include "monitor/qdev.h" #include "hw/pci/pci.h" +#include "net_rx_pkt.h" #define VIRTIO_NET_VM_VERSION 11 @@ -1598,8 +1599,80 @@ static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) return 0; } +static uint8_t virtio_net_get_hash_type(bool isip4, + bool isip6, + bool isudp, + bool istcp, + uint32_t types) +{ + if (isip4) { + if (istcp && (types & VIRTIO_NET_RSS_HASH_TYPE_TCPv4)) { + return NetPktRssIpV4Tcp; + } + if (isudp && (types & VIRTIO_NET_RSS_HASH_TYPE_UDPv4)) { + return NetPktRssIpV4Udp; + } + if (types & VIRTIO_NET_RSS_HASH_TYPE_IPv4) { + return NetPktRssIpV4; + } + } else if (isip6) { + uint32_t mask = VIRTIO_NET_RSS_HASH_TYPE_TCP_EX | + VIRTIO_NET_RSS_HASH_TYPE_TCPv6; + + if (istcp && (types & mask)) { + return (types & VIRTIO_NET_RSS_HASH_TYPE_TCP_EX) ? + NetPktRssIpV6TcpEx : NetPktRssIpV6Tcp; + } + mask = VIRTIO_NET_RSS_HASH_TYPE_UDP_EX | VIRTIO_NET_RSS_HASH_TYPE_UDPv6; + if (isudp && (types & mask)) { + return (types & VIRTIO_NET_RSS_HASH_TYPE_UDP_EX) ? + NetPktRssIpV6UdpEx : NetPktRssIpV6Udp; + } + mask = VIRTIO_NET_RSS_HASH_TYPE_IP_EX | VIRTIO_NET_RSS_HASH_TYPE_IPv6; + if (types & mask) { + return (types & VIRTIO_NET_RSS_HASH_TYPE_IP_EX) ? + NetPktRssIpV6Ex : NetPktRssIpV6; + } + } + return 0xff; +} + +static int virtio_net_process_rss(NetClientState *nc, const uint8_t *buf, + size_t size) +{ + VirtIONet *n = qemu_get_nic_opaque(nc); + unsigned int index = nc->queue_index, new_index; + struct NetRxPkt *pkt = n->rx_pkt; + uint8_t net_hash_type; + uint32_t hash; + bool isip4, isip6, isudp, istcp; + + net_rx_pkt_set_protocols(pkt, buf + n->host_hdr_len, + size - n->host_hdr_len); + net_rx_pkt_get_protocols(pkt, &isip4, &isip6, &isudp, &istcp); + if (isip4 && (net_rx_pkt_get_ip4_info(pkt)->fragment)) { + istcp = isudp = false; + } + if (isip6 && (net_rx_pkt_get_ip6_info(pkt)->fragment)) { + istcp = isudp = false; + } + net_hash_type = virtio_net_get_hash_type(isip4, isip6, isudp, istcp, + n->rss_data.hash_types); + if (net_hash_type > NetPktRssIpV6UdpEx) { + return n->rss_data.default_queue; + } + + hash = net_rx_pkt_calc_rss_hash(pkt, net_hash_type, n->rss_data.key); + new_index = hash & (n->rss_data.indirections_len - 1); + new_index = n->rss_data.indirections_table[new_index]; + if (index == new_index) { + return -1; + } + return new_index; +} + static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf, - size_t size) + size_t size, bool no_rss) { VirtIONet *n = qemu_get_nic_opaque(nc); VirtIONetQueue *q = virtio_net_get_subqueue(nc); @@ -1613,6 +1686,14 @@ static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf, return -1; } + if (!no_rss && n->rss_data.enabled) { + int index = virtio_net_process_rss(nc, buf, size); + if (index >= 0) { + NetClientState *nc2 = qemu_get_subqueue(n->nic, index); + return virtio_net_receive_rcu(nc2, buf, size, true); + } + } + /* hdr_len refers to the header we supply to the guest */ if (!virtio_net_has_buffers(q, size + n->guest_hdr_len - n->host_hdr_len)) { return 0; @@ -1707,7 +1788,7 @@ static ssize_t virtio_net_do_receive(NetClientState *nc, const uint8_t *buf, { RCU_READ_LOCK_GUARD(); - return virtio_net_receive_rcu(nc, buf, size); + return virtio_net_receive_rcu(nc, buf, size, false); } static void virtio_net_rsc_extract_unit4(VirtioNetRscChain *chain, @@ -3283,6 +3364,8 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp) QTAILQ_INIT(&n->rsc_chains); n->qdev = dev; + + net_rx_pkt_init(&n->rx_pkt, false); } static void virtio_net_device_unrealize(DeviceState *dev, Error **errp) @@ -3320,6 +3403,7 @@ static void virtio_net_device_unrealize(DeviceState *dev, Error **errp) qemu_del_nic(n->nic); virtio_net_rsc_cleanup(n); g_free(n->rss_data.indirections_table); + net_rx_pkt_uninit(n->rx_pkt); virtio_cleanup(vdev); } diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index d3fad7c8f3..5081f3c52a 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -212,6 +212,7 @@ struct VirtIONet { DeviceListener primary_listener; Notifier migration_state; VirtioNetRssData rss_data; + struct NetRxPkt *rx_pkt; }; void virtio_net_set_netclient_name(VirtIONet *n, const char *name,