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 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 BB8E7C19F2A for ; Thu, 4 Aug 2022 18:44:05 +0000 (UTC) Received: from localhost ([::1]:42046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oJfpE-0008HC-OE for qemu-devel@archiver.kernel.org; Thu, 04 Aug 2022 14:44:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:32792) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJfQK-00063J-JH for qemu-devel@nongnu.org; Thu, 04 Aug 2022 14:18:22 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:51179) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJfQH-0001Hx-EC for qemu-devel@nongnu.org; Thu, 04 Aug 2022 14:18:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1659637090; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F3tadPuSrBqodjKYPy0q2EEHu/LjR7giDgt+48GrVZs=; b=Ba55iWEjCvH4+waGWL3DekxDBFHj4e06QtVLKR3Y6cFUw1fICWy+Qv8ZUCIQupVaGybABd 5fwIiHEmW5EiH7uyOh9uyPYxeMKHmRHja2ePxlGPdjvZAuNysZoT+U2rBNzElRHlONpmF2 vyMgEi39k2zl0d6AOLAYVj0jxOdh170= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-418-SwyLWpHPOc6sMRdWVuEQ5g-1; Thu, 04 Aug 2022 14:18:06 -0400 X-MC-Unique: SwyLWpHPOc6sMRdWVuEQ5g-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4C2A685A585; Thu, 4 Aug 2022 18:18:06 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.132]) by smtp.corp.redhat.com (Postfix) with ESMTP id 20D6A492C3B; Thu, 4 Aug 2022 18:18:02 +0000 (UTC) From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Stefano Garzarella , "Gonglei (Arei)" , Cornelia Huck , Liuxiangdong , "Michael S. Tsirkin" , Jason Wang , Gautam Dawar , Laurent Vivier , Eli Cohen , Zhu Lingshan , Cindy Lu , Stefan Hajnoczi , Parav Pandit , Paolo Bonzini , Harpreet Singh Anand , Eric Blake , Markus Armbruster Subject: [PATCH v6 11/12] vdpa: Add virtio-net mac address via CVQ at start Date: Thu, 4 Aug 2022 20:17:21 +0200 Message-Id: <20220804181722.701067-12-eperezma@redhat.com> In-Reply-To: <20220804181722.701067-1-eperezma@redhat.com> References: <20220804181722.701067-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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" This is needed so the destination vdpa device see the same state a the guest set in the source. Signed-off-by: Eugenio Pérez --- v6: * Map and unmap command buffers at the start and end of device usage. v5: * Rename s/start/load/ * Use independent NetClientInfo to only add load callback on cvq. --- net/vhost-vdpa.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index a3ca6af69f..7a50d46dae 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -363,11 +363,54 @@ static ssize_t vhost_vdpa_net_cvq_add(VhostVDPAState *s, size_t out_len, return vhost_svq_poll(svq); } +static int vhost_vdpa_net_load(NetClientState *nc) +{ + VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc); + struct vhost_vdpa *v = &s->vhost_vdpa; + VirtIONet *n; + uint64_t features; + + assert(nc->info->type == NET_CLIENT_DRIVER_VHOST_VDPA); + + if (!v->shadow_vqs_enabled) { + return 0; + } + + n = VIRTIO_NET(v->dev->vdev); + features = v->dev->vdev->host_features; + if (features & BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR)) { + const struct virtio_net_ctrl_hdr ctrl = { + .class = VIRTIO_NET_CTRL_MAC, + .cmd = VIRTIO_NET_CTRL_MAC_ADDR_SET, + }; + char *cursor = s->cvq_cmd_out_buffer; + ssize_t dev_written; + virtio_net_ctrl_ack state; + + memcpy(cursor, &ctrl, sizeof(ctrl)); + cursor += sizeof(ctrl); + memcpy(cursor, n->mac, sizeof(n->mac)); + cursor += sizeof(n->mac); + + dev_written = vhost_vdpa_net_cvq_add(s, sizeof(ctrl) + sizeof(n->mac), + sizeof(state)); + if (unlikely(dev_written < 0)) { + return dev_written; + } + + memcpy(&state, s->cvq_cmd_in_buffer, sizeof(state)); + return state == VIRTIO_NET_OK ? 0 : -1; + } + + return 0; +} + static NetClientInfo net_vhost_vdpa_cvq_info = { .type = NET_CLIENT_DRIVER_VHOST_VDPA, .size = sizeof(VhostVDPAState), .receive = vhost_vdpa_receive, .prepare = vhost_vdpa_net_cvq_prepare, + .load = vhost_vdpa_net_load, .stop = vhost_vdpa_net_cvq_stop, .cleanup = vhost_vdpa_cleanup, .has_vnet_hdr = vhost_vdpa_has_vnet_hdr, -- 2.31.1