From patchwork Fri Jul 7 15:27:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Hawkins Jiawei X-Patchwork-Id: 13305047 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 2F660C0015E for ; Fri, 7 Jul 2023 15:28:50 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qHnNB-0000Y3-T1; Fri, 07 Jul 2023 11:27:54 -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 1qHnN4-0000T6-JA for qemu-devel@nongnu.org; Fri, 07 Jul 2023 11:27:48 -0400 Received: from mail-pg1-x535.google.com ([2607:f8b0:4864:20::535]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qHnN2-00075K-SX for qemu-devel@nongnu.org; Fri, 07 Jul 2023 11:27:46 -0400 Received: by mail-pg1-x535.google.com with SMTP id 41be03b00d2f7-55ba5bb0bf3so1378992a12.1 for ; Fri, 07 Jul 2023 08:27:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1688743663; x=1691335663; 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=nfZfag1JfSDpKsrmVxXiIq1XR8AXvbuoqO5vmNYxwj4=; b=AAQ7NeqH06r+Qm2mcDIktt5ZumaRY0byL8xJL5M2eiCy2hlnGv8M9OwB8zv8dXwYWV beJaPEWdQqtJmtwEf4AFYsYu/ZQnEYzz/i4KwH6L/kO20UhuTWt9vYXgJnvbFqFGtm/L t9mSNq2PAaBD3tzjeVZGAwD4Neoe8eG+ORfNLWbFaJ8s0dkHS3DnyH/f3YX3V+mP7qLU dSeuCQU9tqu7lT/MYr1T6+iU0j0dMQ3RC0s4mtjQqgGr4HBT5svOzdNYMF9RcnSIlUvj BavbzNSitcnS+3Wo5Mf+mfGutXC+qCiUVVr7bPuQdckmNXRYfg3mgixg8VkxVuMMsweN 2ZqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688743663; x=1691335663; 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=nfZfag1JfSDpKsrmVxXiIq1XR8AXvbuoqO5vmNYxwj4=; b=RY8AdFjpFEK/O8yyykb9mYpVcaAamZLZ22jJGgtsFYgMnqxDkyz7od+4ZSkQGtMRsP tFElfQ8vS0Z65uRDDQSZuJ4VkFjbc/cLEejmAjdGf9usKMI5nB1XSK3YEfkCHvMOFond FjjdL8DXz3bA4EEwl89OSEYUOijaWQS/pqxylYGLAAR4vOb+dr0GTvHtAYBjR+QUtvZZ nMyRs1nzpdtIaki+OHKcnKEPtMbb8k/78EkseakgZH4KN5PE/+zthJ+Hees9IgK0nS0K EHqwNzlkZ7VerkolILKp9b+ow26ECTOYOQwIDcNvzSQeQp/NS44uUho4+fn6Mzri9Nrd WzsQ== X-Gm-Message-State: ABy/qLbdA9eXJEZH8cqLLRjym1AKUvCzT5QVgDKHFq/h70mvWmUFLneB vPxzC/ztvAMDA43ft/xlRpWSsB8UqETJGQ== X-Google-Smtp-Source: APBJJlGi1acLqrUwF1N6tuouJQZ5Rgt6aMWeEGa1z/gafk/Apcl+bi4uF2N0UiBu+Y1WTSN9/zcPWA== X-Received: by 2002:a05:6a20:9390:b0:12a:f4d2:3e25 with SMTP id x16-20020a056a20939000b0012af4d23e25mr8614423pzh.29.1688743663022; Fri, 07 Jul 2023 08:27:43 -0700 (PDT) Received: from localhost ([159.226.94.115]) by smtp.gmail.com with ESMTPSA id u12-20020aa7848c000000b0065da94fe921sm3021526pfn.50.2023.07.07.08.27.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Jul 2023 08:27:42 -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 v3 2/7] vdpa: Restore MAC address filtering state Date: Fri, 7 Jul 2023 23:27:29 +0800 Message-Id: <4b9550c14bc8c98c8f48e04dbf3d3ac41489d3fd.1688743107.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::535; envelope-from=yin31149@gmail.com; helo=mail-pg1-x535.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 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, T_SCC_BODY_TEXT_LINE=-0.01 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 refactors vhost_vdpa_net_load_mac() to restore the MAC address filtering state at device's startup. Signed-off-by: Hawkins Jiawei Acked-by: Eugenio Pérez --- v3: - return early if mismatch the condition suggested by Eugenio v2: https://lore.kernel.org/all/2f2560f749186c0eb1055f9926f464587e419eeb.1688051252.git.yin31149@gmail.com/ - use iovec suggested by Eugenio - avoid sending CVQ command in default state v1: https://lore.kernel.org/all/00f72fe154a882fd6dc15bc39e3a1ac63f9dadce.1687402580.git.yin31149@gmail.com/ net/vhost-vdpa.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 31ef6ad6ec..7189ccafaf 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -660,6 +660,58 @@ static int vhost_vdpa_net_load_mac(VhostVDPAState *s, const VirtIONet *n) } } + /* + * According to VirtIO standard, "The device MUST have an + * empty MAC filtering table on reset.". + * + * Therefore, there is no need to send this CVQ command if the + * driver also sets an empty MAC filter table, which aligns with + * the device's defaults. + * + * Note that the device's defaults can mismatch the driver's + * configuration only at live migration. + */ + if (!virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_CTRL_RX) || + n->mac_table.in_use == 0) { + return 0; + } + + uint32_t uni_entries = n->mac_table.first_multi, + uni_macs_size = uni_entries * ETH_ALEN, + mul_entries = n->mac_table.in_use - uni_entries, + mul_macs_size = mul_entries * ETH_ALEN; + struct virtio_net_ctrl_mac uni = { + .entries = cpu_to_le32(uni_entries), + }; + struct virtio_net_ctrl_mac mul = { + .entries = cpu_to_le32(mul_entries), + }; + const struct iovec data[] = { + { + .iov_base = &uni, + .iov_len = sizeof(uni), + }, { + .iov_base = n->mac_table.macs, + .iov_len = uni_macs_size, + }, { + .iov_base = &mul, + .iov_len = sizeof(mul), + }, { + .iov_base = &n->mac_table.macs[uni_macs_size], + .iov_len = mul_macs_size, + }, + }; + ssize_t dev_written = vhost_vdpa_net_load_cmd(s, + VIRTIO_NET_CTRL_MAC, + VIRTIO_NET_CTRL_MAC_TABLE_SET, + data, ARRAY_SIZE(data)); + if (unlikely(dev_written < 0)) { + return dev_written; + } + if (*s->status != VIRTIO_NET_OK) { + return -EIO; + } + return 0; }