From nobody Sun Nov 9 17:55:52 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.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; Authentication-Results: mx.zohomail.com; spf=pass (zoho.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=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1551211522809155.31321278891767; Tue, 26 Feb 2019 12:05:22 -0800 (PST) Received: from localhost ([127.0.0.1]:60644 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gyiyY-0002NI-Nh for importer@patchew.org; Tue, 26 Feb 2019 15:05:14 -0500 Received: from eggs.gnu.org ([209.51.188.92]:52265) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gyitj-0007TN-W0 for qemu-devel@nongnu.org; Tue, 26 Feb 2019 15:00:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gyitg-00078X-2t for qemu-devel@nongnu.org; Tue, 26 Feb 2019 15:00:15 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38122) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gyite-00076R-44 for qemu-devel@nongnu.org; Tue, 26 Feb 2019 15:00:11 -0500 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 60D2D30C1A5C for ; Tue, 26 Feb 2019 20:00:09 +0000 (UTC) Received: from dgilbert-t580.localhost (ovpn-116-247.ams2.redhat.com [10.36.116.247]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7B74C1001DC6; Tue, 26 Feb 2019 20:00:08 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, jasowang@redhat.com Date: Tue, 26 Feb 2019 19:59:53 +0000 Message-Id: <20190226195959.28759-4-dgilbert@redhat.com> In-Reply-To: <20190226195959.28759-1-dgilbert@redhat.com> References: <20190226195959.28759-1-dgilbert@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Tue, 26 Feb 2019 20:00:09 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v5 3/9] virtio-net: Switch to using announce timer X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: quintela@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: "Dr. David Alan Gilbert" Switch virtio's self announcement to use the AnnounceTimer. It keeps it's own AnnounceTimer (per device), and starts running it using a migration post-load and a virtual clock; that way the announce happens once the guest is actually running. The timer uses the migration parameters to set the timing of the repeats. Based on earlier patches by myself and Vladislav Yasevich Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Michael S. Tsirkin --- hw/net/trace-events | 5 +++++ hw/net/virtio-net.c | 36 ++++++++++++++++++++++------------ include/hw/virtio/virtio-net.h | 4 ++-- 3 files changed, 30 insertions(+), 15 deletions(-) diff --git a/hw/net/trace-events b/hw/net/trace-events index 9d49f62fa1..b237d9024c 100644 --- a/hw/net/trace-events +++ b/hw/net/trace-events @@ -359,3 +359,8 @@ sunhme_rx_filter_reject(void) "rejecting incoming frame" sunhme_rx_filter_accept(void) "accepting incoming frame" sunhme_rx_desc(uint32_t addr, int offset, uint32_t status, int len, int cr= , int nr) "addr 0x%"PRIx32"(+0x%x) status 0x%"PRIx32 " len %d (ring %d/%d)" sunhme_rx_xsum_calc(uint16_t xsum) "calculated incoming xsum as 0x%x" + +# hw/net/virtio-net.c +virtio_net_announce_timer(int round) "%d" +virtio_net_handle_announce(int round) "%d" +virtio_net_post_load_device(void) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 6e6b146022..38b8974144 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -21,12 +21,14 @@ #include "qemu/timer.h" #include "hw/virtio/virtio-net.h" #include "net/vhost_net.h" +#include "net/announce.h" #include "hw/virtio/virtio-bus.h" #include "qapi/error.h" #include "qapi/qapi-events-net.h" #include "hw/virtio/virtio-access.h" #include "migration/misc.h" #include "standard-headers/linux/ethtool.h" +#include "trace.h" =20 #define VIRTIO_NET_VM_VERSION 11 =20 @@ -152,8 +154,9 @@ static void virtio_net_announce_timer(void *opaque) { VirtIONet *n =3D opaque; VirtIODevice *vdev =3D VIRTIO_DEVICE(n); + trace_virtio_net_announce_timer(n->announce_timer.round); =20 - n->announce_counter--; + n->announce_timer.round--; n->status |=3D VIRTIO_NET_S_ANNOUNCE; virtio_notify_config(vdev); } @@ -467,8 +470,8 @@ static void virtio_net_reset(VirtIODevice *vdev) n->nobcast =3D 0; /* multiqueue is disabled by default */ n->curr_queues =3D 1; - timer_del(n->announce_timer); - n->announce_counter =3D 0; + timer_del(n->announce_timer.tm); + n->announce_timer.round =3D 0; n->status &=3D ~VIRTIO_NET_S_ANNOUNCE; =20 /* Flush any MAC and VLAN filter table state */ @@ -964,13 +967,12 @@ static int virtio_net_handle_vlan_table(VirtIONet *n,= uint8_t cmd, static int virtio_net_handle_announce(VirtIONet *n, uint8_t cmd, struct iovec *iov, unsigned int iov_= cnt) { + trace_virtio_net_handle_announce(n->announce_timer.round); if (cmd =3D=3D VIRTIO_NET_CTRL_ANNOUNCE_ACK && n->status & VIRTIO_NET_S_ANNOUNCE) { n->status &=3D ~VIRTIO_NET_S_ANNOUNCE; - if (n->announce_counter) { - timer_mod(n->announce_timer, - qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + - self_announce_delay(n->announce_counter)); + if (n->announce_timer.round) { + qemu_announce_timer_step(&n->announce_timer); } return VIRTIO_NET_OK; } else { @@ -2286,6 +2288,7 @@ static int virtio_net_post_load_device(void *opaque, = int version_id) VirtIODevice *vdev =3D VIRTIO_DEVICE(n); int i, link_down; =20 + trace_virtio_net_post_load_device(); virtio_net_set_mrg_rx_bufs(n, n->mergeable_rx_bufs, virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)= ); @@ -2322,8 +2325,15 @@ static int virtio_net_post_load_device(void *opaque,= int version_id) =20 if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { - n->announce_counter =3D SELF_ANNOUNCE_ROUNDS; - timer_mod(n->announce_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)= ); + qemu_announce_timer_reset(&n->announce_timer, migrate_announce_par= ams(), + QEMU_CLOCK_VIRTUAL, + virtio_net_announce_timer, n); + if (n->announce_timer.round) { + timer_mod(n->announce_timer.tm, + qemu_clock_get_ms(n->announce_timer.type)); + } else { + qemu_announce_timer_del(&n->announce_timer); + } } =20 return 0; @@ -2679,8 +2689,9 @@ static void virtio_net_device_realize(DeviceState *de= v, Error **errp) qemu_macaddr_default_if_unset(&n->nic_conf.macaddr); memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac)); n->status =3D VIRTIO_NET_S_LINK_UP; - n->announce_timer =3D timer_new_ms(QEMU_CLOCK_VIRTUAL, - virtio_net_announce_timer, n); + qemu_announce_timer_reset(&n->announce_timer, migrate_announce_params(= ), + QEMU_CLOCK_VIRTUAL, + virtio_net_announce_timer, n); =20 if (n->netclient_type) { /* @@ -2743,8 +2754,7 @@ static void virtio_net_device_unrealize(DeviceState *= dev, Error **errp) virtio_net_del_queue(n, i); } =20 - timer_del(n->announce_timer); - timer_free(n->announce_timer); + qemu_announce_timer_del(&n->announce_timer); g_free(n->vqs); qemu_del_nic(n->nic); virtio_net_rsc_cleanup(n); diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index a1a0be3bea..b96f0c643f 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -17,6 +17,7 @@ #include "qemu/units.h" #include "standard-headers/linux/virtio_net.h" #include "hw/virtio/virtio.h" +#include "net/announce.h" =20 #define TYPE_VIRTIO_NET "virtio-net-device" #define VIRTIO_NET(obj) \ @@ -181,8 +182,7 @@ struct VirtIONet { char *netclient_name; char *netclient_type; uint64_t curr_guest_offloads; - QEMUTimer *announce_timer; - int announce_counter; + AnnounceTimer announce_timer; bool needs_vnet_hdr_swap; bool mtu_bypass_backend; }; --=20 2.20.1