From patchwork Sun Oct 22 02:16:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Hawkins Jiawei X-Patchwork-Id: 13431617 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 18801C0032E for ; Sun, 22 Oct 2023 02:17:40 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1quO11-0005pt-Or; Sat, 21 Oct 2023 22:16:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1quO0z-0005pW-O4 for qemu-devel@nongnu.org; Sat, 21 Oct 2023 22:16:29 -0400 Received: from mail-oo1-xc2d.google.com ([2607:f8b0:4864:20::c2d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1quO0y-0003LN-4A for qemu-devel@nongnu.org; Sat, 21 Oct 2023 22:16:29 -0400 Received: by mail-oo1-xc2d.google.com with SMTP id 006d021491bc7-5842c251d7cso953776eaf.1 for ; Sat, 21 Oct 2023 19:16:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697940987; x=1698545787; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=lNMeJcS2Kg4+RYFG13jdQCpQGp48YyyVDQuK8zzi30o=; b=i1LOWPEwnpruTW2G09sDMVf/3rmjZTyiiPvP6I/aRHovpW5t07OMKZzprzmZh39x3I 86b8C69FBXpQLTBSAJ6WNMQz+K5YNVnqM+OqYYUuq9fjQS/o+MuiZbcz4nDdsK2pt9bt V3/RIKZJbtpPD/bHykDwByTKKgJRMyLKLL7vez/oF5Lv7VUlNeYy2z0iVtYgj9h6+2Nh biC8kXSLzIvEy4FgzvapLf+71eYlO0HeXLenc/CawA0if5fVyZ1UHvuUAR2qvYv45gkS TGlkq+9gXRg5adLi2SO78ZHf6FrtlIoeBSkvCHEkJ4AqDYsz5otDarlPYlaJ+RPpN4Zb yV+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697940987; x=1698545787; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=lNMeJcS2Kg4+RYFG13jdQCpQGp48YyyVDQuK8zzi30o=; b=EUbT51Wl0iTgE5Z4YOo5Gmk+waeOFtolkmySEEeu9e9Q15qazgNOahoa9ADbm1zn5v 0MXs8xGOaIL4NLfHbKUJeAg7D10dKqW1EHbKuxFTAA+c5cHl9Zoab27QVX3KQsM6O8uG fWmHmGMSBnDYy1MmhMid6yE8vUuTYwfw7pWZEFK+IDdgEzM0vz6vVGZqkQcrECI4fvur witClmofWbbM9yZtwLLENf+d/PWBmd7EfaIVyMijWn4wF7DNUF3ApdcS6NpzFFHOt1C0 eZZJWZSDSi0gHOGQSMe8CgTPsK+zcvtvieqZaWlUM4ao6oBff5/6NmYe+uOTlESnm7w2 nL4w== X-Gm-Message-State: AOJu0Yyv9IRS/1upZ2iqOm02RJkzIYrOycPeJZYk1VLZVLDAL9XGgIln OdZBq+/ysaMUYlF6WQO6KdA= X-Google-Smtp-Source: AGHT+IF8i1FaNMKZpijF5YwCZRLaBI6yCJfsNUL1e3KAmBM7Yv9H5cNvODw0QsLyRaCKidJLcCT1fA== X-Received: by 2002:a05:6358:9146:b0:140:f6ab:b11e with SMTP id r6-20020a056358914600b00140f6abb11emr6962920rwr.28.1697940986596; Sat, 21 Oct 2023 19:16:26 -0700 (PDT) Received: from localhost ([124.64.17.222]) by smtp.gmail.com with ESMTPSA id f23-20020aa79697000000b0068fb783d0c6sm3968457pfk.141.2023.10.21.19.16.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 21 Oct 2023 19:16:26 -0700 (PDT) From: Hawkins Jiawei To: jasowang@redhat.com, mst@redhat.com, eperezma@redhat.com Cc: qemu-devel@nongnu.org, yin31149@gmail.com, 18801353760@163.com Subject: [PATCH v4 1/3] vdpa: Add SetSteeringEBPF method for NetClientState Date: Sun, 22 Oct 2023 10:16:15 +0800 Message-Id: <1c6faf4c5c3304c0bf14929143ccedb2e90dbcb2.1697904740.git.yin31149@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::c2d; envelope-from=yin31149@gmail.com; helo=mail-oo1-xc2d.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org At present, to enable the VIRTIO_NET_F_RSS feature, eBPF must be loaded for the vhost backend. Given that vhost-vdpa is one of the vhost backend, we need to implement the SetSteeringEBPF method to support RSS for vhost-vdpa, even if vhost-vdpa calculates the rss hash in the hardware device instead of in the kernel by eBPF. Although this requires QEMU to be compiled with `--enable-bpf` configuration even if the vdpa device does not use eBPF to calculate the rss hash, this can avoid adding the specific conditional statements for vDPA case to enable the VIRTIO_NET_F_RSS feature, which reduces code maintainbility. Suggested-by: Eugenio Pérez Signed-off-by: Hawkins Jiawei --- v4: no code changes v3: https://lore.kernel.org/all/30509e3c3b07bcadd95d5932aeb16820cb022902.1693299194.git.yin31149@gmail.com/ net/vhost-vdpa.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 4c65c53fd2..c4b89f5119 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -241,6 +241,12 @@ static void vhost_vdpa_cleanup(NetClientState *nc) } } +/** Dummy SetSteeringEBPF to support RSS for vhost-vdpa backend */ +static bool vhost_vdpa_set_steering_ebpf(NetClientState *nc, int prog_fd) +{ + return true; +} + static bool vhost_vdpa_has_vnet_hdr(NetClientState *nc) { assert(nc->info->type == NET_CLIENT_DRIVER_VHOST_VDPA); @@ -422,6 +428,7 @@ static NetClientInfo net_vhost_vdpa_info = { .has_vnet_hdr = vhost_vdpa_has_vnet_hdr, .has_ufo = vhost_vdpa_has_ufo, .check_peer_type = vhost_vdpa_check_peer_type, + .set_steering_ebpf = vhost_vdpa_set_steering_ebpf, }; static int64_t vhost_vdpa_get_vring_group(int device_fd, unsigned vq_index, @@ -1255,6 +1262,7 @@ static NetClientInfo net_vhost_vdpa_cvq_info = { .has_vnet_hdr = vhost_vdpa_has_vnet_hdr, .has_ufo = vhost_vdpa_has_ufo, .check_peer_type = vhost_vdpa_check_peer_type, + .set_steering_ebpf = vhost_vdpa_set_steering_ebpf, }; /* From patchwork Sun Oct 22 02:16:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hawkins Jiawei X-Patchwork-Id: 13431616 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id CC915C004C0 for ; Sun, 22 Oct 2023 02:17:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1quO16-0005qH-FM; Sat, 21 Oct 2023 22:16:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1quO14-0005q2-E1 for qemu-devel@nongnu.org; Sat, 21 Oct 2023 22:16:34 -0400 Received: from mail-io1-xd33.google.com ([2607:f8b0:4864:20::d33]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1quO12-0003Le-JH for qemu-devel@nongnu.org; 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envelope-from=yin31149@gmail.com; helo=mail-io1-xd33.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This patch reuses vhost_vdpa_net_load_rss() with some refactorings to restore the receive-side scaling state at device's startup. Signed-off-by: Hawkins Jiawei --- v4: - add do_rss argument and relative code in vhost_vdpa_net_load_rss() v3: https://lore.kernel.org/all/47b17e160ba4e55b24790b7d73b22d2b437ebe3c.1693299194.git.yin31149@gmail.com/ - resolve conflict with updated patch "Vhost-vdpa Shadow Virtqueue Hash calculation Support" RFC v2: https://lore.kernel.org/all/af33aa80bc4ef0b2cec6c21b9448866c517fde80.1691926415.git.yin31149@gmail.com/ - Correct the feature usage to VIRTIO_NET_F_HASH_REPORT when loading the hash calculation state RFC v1: https://lore.kernel.org/all/93d5d82f0a5df71df326830033e50358c8b6be7a.1691766252.git.yin31149@gmail.com/ net/vhost-vdpa.c | 63 ++++++++++++++++++++++++++++++++---------------- 1 file changed, 42 insertions(+), 21 deletions(-) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index c4b89f5119..5de01aa851 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -827,7 +827,7 @@ static int vhost_vdpa_net_load_mac(VhostVDPAState *s, const VirtIONet *n, static int vhost_vdpa_net_load_rss(VhostVDPAState *s, const VirtIONet *n, struct iovec *out_cursor, - struct iovec *in_cursor) + struct iovec *in_cursor, bool do_rss) { struct virtio_net_rss_config cfg; ssize_t r; @@ -853,19 +853,33 @@ static int vhost_vdpa_net_load_rss(VhostVDPAState *s, const VirtIONet *n, sizeof(n->rss_data.indirections_table[0])); cfg.hash_types = cpu_to_le32(n->rss_data.hash_types); - /* - * According to VirtIO standard, "Field reserved MUST contain zeroes. - * It is defined to make the structure to match the layout of - * virtio_net_rss_config structure, defined in 5.1.6.5.7.". - * - * Therefore, we need to zero the fields in struct virtio_net_rss_config, - * which corresponds the `reserved` field in - * struct virtio_net_hash_config. - */ - cfg.indirection_table_mask = 0; - cfg.unclassified_queue = 0; - table[0] = 0; /* the actual indirection table for cfg */ - cfg.max_tx_vq = 0; + if (do_rss) { + /* + * According to VirtIO standard, "Number of entries in indirection_table + * is (indirection_table_mask + 1)". + */ + cfg.indirection_table_mask = cpu_to_le16(n->rss_data.indirections_len - + 1); + cfg.unclassified_queue = cpu_to_le16(n->rss_data.default_queue); + for (int i = 0; i < n->rss_data.indirections_len; ++i) { + table[i] = cpu_to_le16(n->rss_data.indirections_table[i]); + } + cfg.max_tx_vq = cpu_to_le16(n->curr_queue_pairs); + } else { + /* + * According to VirtIO standard, "Field reserved MUST contain zeroes. + * It is defined to make the structure to match the layout of + * virtio_net_rss_config structure, defined in 5.1.6.5.7.". + * + * Therefore, we need to zero the fields in + * struct virtio_net_rss_config, which corresponds the `reserved` field + * in struct virtio_net_hash_config. + */ + cfg.indirection_table_mask = 0; + cfg.unclassified_queue = 0; + table[0] = 0; /* the actual indirection table for cfg */ + cfg.max_tx_vq = 0; + } /* * Consider that virtio_net_handle_rss() currently does not restore the @@ -896,6 +910,7 @@ static int vhost_vdpa_net_load_rss(VhostVDPAState *s, const VirtIONet *n, r = vhost_vdpa_net_load_cmd(s, out_cursor, in_cursor, VIRTIO_NET_CTRL_MQ, + do_rss ? VIRTIO_NET_CTRL_MQ_RSS_CONFIG : VIRTIO_NET_CTRL_MQ_HASH_CONFIG, data, ARRAY_SIZE(data)); if (unlikely(r < 0)) { @@ -930,13 +945,19 @@ static int vhost_vdpa_net_load_mq(VhostVDPAState *s, return r; } - if (!virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_HASH_REPORT)) { - return 0; - } - - r = vhost_vdpa_net_load_rss(s, n, out_cursor, in_cursor); - if (unlikely(r < 0)) { - return r; + if (virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_RSS)) { + /* load the receive-side scaling state */ + r = vhost_vdpa_net_load_rss(s, n, out_cursor, in_cursor, true); + if (unlikely(r < 0)) { + return r; + } + } else if (virtio_vdev_has_feature(&n->parent_obj, + VIRTIO_NET_F_HASH_REPORT)) { + /* load the hash calculation state */ + r = vhost_vdpa_net_load_rss(s, n, out_cursor, in_cursor, false); + if (unlikely(r < 0)) { + return r; + } } return 0; From patchwork Sun Oct 22 02:16:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hawkins Jiawei X-Patchwork-Id: 13431615 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id F367AC001E0 for ; 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Sat, 21 Oct 2023 19:16:34 -0700 (PDT) Received: from localhost ([124.64.17.222]) by smtp.gmail.com with ESMTPSA id bs1-20020a632801000000b005b0b7ede830sm3672410pgb.50.2023.10.21.19.16.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 21 Oct 2023 19:16:34 -0700 (PDT) From: Hawkins Jiawei To: jasowang@redhat.com, mst@redhat.com, eperezma@redhat.com Cc: qemu-devel@nongnu.org, yin31149@gmail.com, 18801353760@163.com Subject: [PATCH v4 3/3] vdpa: Allow VIRTIO_NET_F_RSS in SVQ Date: Sun, 22 Oct 2023 10:16:17 +0800 Message-Id: <4ee7f3f339469f41626ca2c3ac7b1c574ebce901.1697904740.git.yin31149@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=yin31149@gmail.com; helo=mail-pf1-x436.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Enable SVQ with VIRTIO_NET_F_RSS feature. Signed-off-by: Hawkins Jiawei --- v4: no code changes v3: https://lore.kernel.org/all/2d2a378291bfac4144a0c0c473cf80415bb580b3.1693299194.git.yin31149@gmail.com/ net/vhost-vdpa.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 5de01aa851..66133408d5 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -122,6 +122,7 @@ static const uint64_t vdpa_svq_device_features = /* VHOST_F_LOG_ALL is exposed by SVQ */ BIT_ULL(VHOST_F_LOG_ALL) | BIT_ULL(VIRTIO_NET_F_HASH_REPORT) | + BIT_ULL(VIRTIO_NET_F_RSS) | BIT_ULL(VIRTIO_NET_F_RSC_EXT) | BIT_ULL(VIRTIO_NET_F_STANDBY) | BIT_ULL(VIRTIO_NET_F_SPEED_DUPLEX);