From patchwork Thu Aug 4 18:28:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 12936599 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 78ACCC19F2A for ; Thu, 4 Aug 2022 18:53:36 +0000 (UTC) Received: from localhost ([::1]:33392 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oJfyR-0005f1-LS for qemu-devel@archiver.kernel.org; Thu, 04 Aug 2022 14:53:35 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35112) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJfbP-0000Dw-M0 for qemu-devel@nongnu.org; Thu, 04 Aug 2022 14:29:47 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:53595) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oJfbN-00037L-IJ for qemu-devel@nongnu.org; Thu, 04 Aug 2022 14:29:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1659637785; 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=B4ZrLRDwhepJQ17mV/bK0uaEPIPpjZawGXOV8Rt2wjM=; b=dhwcVcd5Lw7g/zpxrz+OpFZw0JjUhsDD0cgpXJ1OHV/fm3aBXACxQzU3zeZ2FIZDsN0ZD4 3oWcOzkYYW5BL0VkHG8O+gx3ntVJlxjLhh+oVkVENxbjjjS/d2W/nW/EylbMNz41CU8thZ 4YFSAWDi8fd2bcslLEWzGQ5fHv2z6S0= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-647-3XYWr0k9PLSTJ_46NYSyxA-1; Thu, 04 Aug 2022 14:29:39 -0400 X-MC-Unique: 3XYWr0k9PLSTJ_46NYSyxA-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 7942B38217EB; Thu, 4 Aug 2022 18:29:38 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.132]) by smtp.corp.redhat.com (Postfix) with ESMTP id E91DE492C3B; Thu, 4 Aug 2022 18:29:34 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Cindy Lu , Harpreet Singh Anand , "Gonglei (Arei)" , Stefano Garzarella , Parav Pandit , Eric Blake , Gautam Dawar , Markus Armbruster , Paolo Bonzini , Laurent Vivier , "Michael S. Tsirkin" , Jason Wang , Stefan Hajnoczi , Liuxiangdong , Eli Cohen , Cornelia Huck , Zhu Lingshan Subject: [PATCH v7 10/12] vhost_net: add NetClientState->load() callback Date: Thu, 4 Aug 2022 20:28:50 +0200 Message-Id: <20220804182852.703398-11-eperezma@redhat.com> In-Reply-To: <20220804182852.703398-1-eperezma@redhat.com> References: <20220804182852.703398-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 Received-SPF: pass client-ip=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 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_LOW=-0.7, 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" It allows per-net client operations right after device's successful start. In particular, to load the device status. Vhost-vdpa net will use it to add the CVQ buffers to restore the device status. Signed-off-by: Eugenio Pérez --- v5: Rename start / load, naming it more specifically. --- include/net/net.h | 2 ++ hw/net/vhost_net.c | 7 +++++++ 2 files changed, 9 insertions(+) diff --git a/include/net/net.h b/include/net/net.h index 7aa1ec0974..356e682ab6 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -45,6 +45,7 @@ typedef struct NICConf { typedef void (NetPoll)(NetClientState *, bool enable); typedef bool (NetCanReceive)(NetClientState *); typedef int (NetPrepare)(NetClientState *); +typedef int (NetLoad)(NetClientState *); typedef void (NetStop)(NetClientState *); typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); @@ -74,6 +75,7 @@ typedef struct NetClientInfo { NetReceiveIOV *receive_iov; NetCanReceive *can_receive; NetPrepare *prepare; + NetLoad *load; NetStop *stop; NetCleanup *cleanup; LinkStatusChanged *link_status_changed; diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 10bca15446..6b83d5503f 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -281,6 +281,13 @@ static int vhost_net_start_one(struct vhost_net *net, } } } + + if (net->nc->info->load) { + r = net->nc->info->load(net->nc); + if (r < 0) { + goto fail; + } + } return 0; fail: file.fd = -1;