From patchwork Fri Jul 22 13:43:17 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: 12926515 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78E13C433EF for ; Fri, 22 Jul 2022 13:43:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235206AbiGVNnr (ORCPT ); Fri, 22 Jul 2022 09:43:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235213AbiGVNnp (ORCPT ); Fri, 22 Jul 2022 09:43:45 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 53C087E01D for ; Fri, 22 Jul 2022 06:43:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1658497423; 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=Le7Hgc2vUuS2ywF+v5z7y32fvz0IBUd34jg+USfjtsQ=; b=T4lpq7dGgkykhaEFHNCE1ovuGhpU5juZiyKLsYVOl5dVL17GDeH/c1scvSaK1sdqC83KOd 394UaC8wgeigyGceimNqEvnKhayaf+aC8YULYH2gqRwuhCpdcJmPAPex9Bn5SAx0qpumcl o114lJd3Rzsr1qnkyc8XzwMYd+YPuhM= 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-583-5_yV2SY8NqqwuRFwdi8PIg-1; Fri, 22 Jul 2022 09:43:41 -0400 X-MC-Unique: 5_yV2SY8NqqwuRFwdi8PIg-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 72D80811E7A; Fri, 22 Jul 2022 13:43:40 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.194.161]) by smtp.corp.redhat.com (Postfix) with ESMTP id A426E401E7B; Fri, 22 Jul 2022 13:43:37 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Jason Wang , Harpreet Singh Anand , Cindy Lu , Cornelia Huck , kvm@vger.kernel.org, Parav Pandit , Stefan Hajnoczi , "Gonglei (Arei)" , "Michael S. Tsirkin" , Zhu Lingshan , Liuxiangdong , Gautam Dawar , Paolo Bonzini , Stefano Garzarella , Eli Cohen , Laurent Vivier Subject: [PATCH v2 6/7] vhost_net: Add NetClientInfo prepare callback Date: Fri, 22 Jul 2022 15:43:17 +0200 Message-Id: <20220722134318.3430667-7-eperezma@redhat.com> In-Reply-To: <20220722134318.3430667-1-eperezma@redhat.com> References: <20220722134318.3430667-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This is used by the backend to perform actions before the device is started. In particular, vdpa will use it to isolate CVQ in its own ASID if possible, and start SVQ unconditionally only in CVQ. Signed-off-by: Eugenio Pérez --- include/net/net.h | 2 ++ hw/net/vhost_net.c | 4 ++++ 2 files changed, 6 insertions(+) diff --git a/include/net/net.h b/include/net/net.h index ad9e80083a..37aecff8f7 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -44,6 +44,7 @@ typedef struct NICConf { typedef void (NetPoll)(NetClientState *, bool enable); typedef bool (NetCanReceive)(NetClientState *); +typedef void (NetPrepare)(NetClientState *); typedef int (NetStart)(NetClientState *); typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); @@ -72,6 +73,7 @@ typedef struct NetClientInfo { NetReceive *receive_raw; NetReceiveIOV *receive_iov; NetCanReceive *can_receive; + NetPrepare *prepare; NetStart *start; NetCleanup *cleanup; LinkStatusChanged *link_status_changed; diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index ddd9ee0441..0fc892c22b 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -244,6 +244,10 @@ static int vhost_net_start_one(struct vhost_net *net, struct vhost_vring_file file = { }; int r; + if (net->nc->info->prepare) { + net->nc->info->prepare(net->nc); + } + r = vhost_dev_enable_notifiers(&net->dev, dev); if (r < 0) { goto fail_notifiers;