From nobody Mon Feb 9 14:34:32 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.alibaba.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1658152484325639.0413059919018; Mon, 18 Jul 2022 06:54:44 -0700 (PDT) Received: from localhost ([::1]:42738 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oDRCt-0008Vi-B0 for importer@patchew.org; Mon, 18 Jul 2022 09:54:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37248) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oDOpl-0007NL-Ho for qemu-devel@nongnu.org; Mon, 18 Jul 2022 07:22:41 -0400 Received: from out30-45.freemail.mail.aliyun.com ([115.124.30.45]:48897) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oDOpf-0000i6-N9 for qemu-devel@nongnu.org; Mon, 18 Jul 2022 07:22:38 -0400 Received: from localhost(mailfrom:kangjie.xu@linux.alibaba.com fp:SMTPD_---0VJjOda5_1658143040) by smtp.aliyun-inc.com; Mon, 18 Jul 2022 19:17:20 +0800 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R141e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01e04400; MF=kangjie.xu@linux.alibaba.com; NM=1; PH=DS; RN=5; SR=0; TI=SMTPD_---0VJjOda5_1658143040; From: Kangjie Xu To: qemu-devel@nongnu.org Cc: mst@redhat.com, jasowang@redhat.com, hengqi@linux.alibaba.com, xuanzhuo@linux.alibaba.com Subject: [PATCH 07/16] virtio-net: support queue reset Date: Mon, 18 Jul 2022 19:17:04 +0800 Message-Id: X-Mailer: git-send-email 2.32.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=115.124.30.45; envelope-from=kangjie.xu@linux.alibaba.com; helo=out30-45.freemail.mail.aliyun.com X-Spam_score_int: -98 X-Spam_score: -9.9 X-Spam_bar: --------- X-Spam_report: (-9.9 / 5.0 requ) BAYES_00=-1.9, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, UNPARSEABLE_RELAY=0.001, USER_IN_DEF_SPF_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 18 Jul 2022 09:49:04 -0400 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1658152484916100001 Content-Type: text/plain; charset="utf-8" From: Xuan Zhuo virtio-net implements queue reset. Queued packets in the corresponding queue pair are flushed or purged. Queue reset is currently only implemented for non-vhosts. Signed-off-by: Xuan Zhuo --- hw/net/virtio-net.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 7ad948ee7c..8396e21a67 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -531,6 +531,19 @@ static RxFilterInfo *virtio_net_query_rxfilter(NetClie= ntState *nc) return info; } =20 +static void virtio_net_queue_reset(VirtIODevice *vdev, uint32_t queue_inde= x) +{ + VirtIONet *n =3D VIRTIO_NET(vdev); + NetClientState *nc =3D qemu_get_subqueue(n->nic, vq2q(queue_index)); + + if (!nc->peer) { + return; + } + + qemu_flush_or_purge_queued_packets(nc->peer, true); + assert(!virtio_net_get_subqueue(nc)->async_tx.elem); +} + static void virtio_net_reset(VirtIODevice *vdev) { VirtIONet *n =3D VIRTIO_NET(vdev); @@ -741,6 +754,7 @@ static uint64_t virtio_net_get_features(VirtIODevice *v= dev, uint64_t features, } =20 if (!get_vhost_net(nc->peer)) { + virtio_add_feature(&features, VIRTIO_F_RING_RESET); return features; } =20 @@ -3766,6 +3780,7 @@ static void virtio_net_class_init(ObjectClass *klass,= void *data) vdc->set_features =3D virtio_net_set_features; vdc->bad_features =3D virtio_net_bad_features; vdc->reset =3D virtio_net_reset; + vdc->queue_reset =3D virtio_net_queue_reset; vdc->set_status =3D virtio_net_set_status; vdc->guest_notifier_mask =3D virtio_net_guest_notifier_mask; vdc->guest_notifier_pending =3D virtio_net_guest_notifier_pending; --=20 2.32.0