From nobody Sat Feb 7 14:10:42 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F04C1527A5 for ; Tue, 9 Jul 2024 08:03:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720512189; cv=none; b=mPPLFs0FZGxbIZcJdXtCzZ7dha8L7EVLAKx5PEbkpHtoBtJouG66/AK3p7Xdfhr35Pwe4ujTPnNf7iRlEVhKjA2E4KxFB5QtKp7x39Uue+9/KNq4amy1K6sf4oAfwwr1QL+T4hTSxp6KdTHH//xxzfSJk82CyZ3Ukle27pvBB40= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720512189; c=relaxed/simple; bh=ItSrSIZhMmKVBhL6QhqgNEBVHBV9MNji+zbTW7wRCZU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RqEO3VgtYFnx/r6ItNmZLH1cOh1io6ayd5talQ/lu6lxanK8DEoiZUuG3tXsq0V/N3M1jEHldtT0ZO9owwWwGa7bBBFKIl1t3uk2ar4swGpDVmzI1F0A0W9wMAUZ6yIkcJn2aIVCNpiIQ2nPisalAO+aDMEMHW2PLY0Dn4wiuaE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=GPQHtC0c; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="GPQHtC0c" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1720512186; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YltytAobm35KcA9WCi/WWsmTKpYn/PUplt1/do/Zw1c=; b=GPQHtC0cZBNZ/afFq7KeE6mm9udzGftPrk3ym9KKxmG5F7G34dxzMTvmqqrLR9KNX1mk6/ PbJ0ZwJIgzvXHKPXrmPYo2yrFUXLLaBhK8lAEylFaNk+0sGkgY1UM+QjdhKLDYGcRyN4Ql vaELlqsJ9/xyVjX8JiuFeKYnpTRm+sg= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-231-etSNNHcXP1SMaDHgVlctrw-1; Tue, 09 Jul 2024 04:02:56 -0400 X-MC-Unique: etSNNHcXP1SMaDHgVlctrw-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8599F1955F65; Tue, 9 Jul 2024 08:02:54 +0000 (UTC) Received: from localhost.localdomain (unknown [10.72.112.184]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id F3FE23000185; Tue, 9 Jul 2024 08:02:47 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com, xuanzhuo@linux.alibaba.com, eperezma@redhat.com Cc: virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org, Venkat Venkatsubra , Gia-Khanh Nguyen Subject: [PATCH net-next v3 3/3] virtio-net: synchronize operstate with admin state on up/down Date: Tue, 9 Jul 2024 16:02:14 +0800 Message-ID: <20240709080214.9790-4-jasowang@redhat.com> In-Reply-To: <20240709080214.9790-1-jasowang@redhat.com> References: <20240709080214.9790-1-jasowang@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Type: text/plain; charset="utf-8" This patch synchronize operstate with admin state per RFC2863. This is done by trying to toggle the carrier upon open/close and synchronize with the config change work. This allows propagate status correctly to stacked devices like: ip link add link enp0s3 macvlan0 type macvlan ip link set link enp0s3 down ip link show Before this patch: 3: enp0s3: mtu 1500 qdisc pfifo_fast state DOWN mode = DEFAULT group default qlen 1000 link/ether 00:00:05:00:00:09 brd ff:ff:ff:ff:ff:ff ...... 5: macvlan0@enp0s3: mtu 1500 qdisc= noqueue state UP mode DEFAULT group default qlen 1000 link/ether b2:a9:c5:04:da:53 brd ff:ff:ff:ff:ff:ff After this patch: 3: enp0s3: mtu 1500 qdisc pfifo_fast state DOWN mode = DEFAULT group default qlen 1000 link/ether 00:00:05:00:00:09 brd ff:ff:ff:ff:ff:ff ... 5: macvlan0@enp0s3: mtu 1500 qdi= sc noqueue state LOWERLAYERDOWN mode DEFAULT group default qlen 1000 link/ether b2:a9:c5:04:da:53 brd ff:ff:ff:ff:ff:ff Cc: Venkat Venkatsubra Cc: Gia-Khanh Nguyen Signed-off-by: Jason Wang Reviewed-by: Xuan Zhuo --- drivers/net/virtio_net.c | 64 ++++++++++++++++++++++++---------------- 1 file changed, 38 insertions(+), 26 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 0b4747e81464..e6626ba25b29 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2476,6 +2476,25 @@ static void virtnet_cancel_dim(struct virtnet_info *= vi, struct dim *dim) net_dim_work_cancel(dim); } =20 +static void virtnet_update_settings(struct virtnet_info *vi) +{ + u32 speed; + u8 duplex; + + if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_SPEED_DUPLEX)) + return; + + virtio_cread_le(vi->vdev, struct virtio_net_config, speed, &speed); + + if (ethtool_validate_speed(speed)) + vi->speed =3D speed; + + virtio_cread_le(vi->vdev, struct virtio_net_config, duplex, &duplex); + + if (ethtool_validate_duplex(duplex)) + vi->duplex =3D duplex; +} + static int virtnet_open(struct net_device *dev) { struct virtnet_info *vi =3D netdev_priv(dev); @@ -2494,6 +2513,18 @@ static int virtnet_open(struct net_device *dev) goto err_enable_qp; } =20 + if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_STATUS)) { + virtio_config_driver_enable(vi->vdev); + /* Do not schedule the config change work as the + * config change notification might have been disabled + * by the virtio core. */ + virtio_config_changed(vi->vdev); + } else { + vi->status =3D VIRTIO_NET_S_LINK_UP; + virtnet_update_settings(vi); + netif_carrier_on(dev); + } + return 0; =20 err_enable_qp: @@ -2936,12 +2967,19 @@ static int virtnet_close(struct net_device *dev) disable_delayed_refill(vi); /* Make sure refill_work doesn't re-enable napi! */ cancel_delayed_work_sync(&vi->refill); + /* Make sure config notification doesn't schedule config work */ + virtio_config_driver_disable(vi->vdev); + /* Make sure status updating is cancelled */ + cancel_work_sync(&vi->config_work); =20 for (i =3D 0; i < vi->max_queue_pairs; i++) { virtnet_disable_queue_pair(vi, i); virtnet_cancel_dim(vi, &vi->rq[i].dim); } =20 + vi->status &=3D ~VIRTIO_NET_S_LINK_UP; + netif_carrier_off(dev); + return 0; } =20 @@ -4640,25 +4678,6 @@ static void virtnet_init_settings(struct net_device = *dev) vi->duplex =3D DUPLEX_UNKNOWN; } =20 -static void virtnet_update_settings(struct virtnet_info *vi) -{ - u32 speed; - u8 duplex; - - if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_SPEED_DUPLEX)) - return; - - virtio_cread_le(vi->vdev, struct virtio_net_config, speed, &speed); - - if (ethtool_validate_speed(speed)) - vi->speed =3D speed; - - virtio_cread_le(vi->vdev, struct virtio_net_config, duplex, &duplex); - - if (ethtool_validate_duplex(duplex)) - vi->duplex =3D duplex; -} - static u32 virtnet_get_rxfh_key_size(struct net_device *dev) { return ((struct virtnet_info *)netdev_priv(dev))->rss_key_size; @@ -6000,13 +6019,6 @@ static int virtnet_probe(struct virtio_device *vdev) /* Assume link up if device can't report link status, otherwise get link status from config. */ netif_carrier_off(dev); - if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_STATUS)) { - schedule_work(&vi->config_work); - } else { - vi->status =3D VIRTIO_NET_S_LINK_UP; - virtnet_update_settings(vi); - netif_carrier_on(dev); - } =20 for (i =3D 0; i < ARRAY_SIZE(guest_offloads); i++) if (virtio_has_feature(vi->vdev, guest_offloads[i])) --=20 2.31.1