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[Qemu-devel] [PULL 04/13] virtio-net: Switch to using announce timer
From: |
Jason Wang |
Subject: |
[Qemu-devel] [PULL 04/13] virtio-net: Switch to using announce timer |
Date: |
Fri, 22 Feb 2019 22:55:11 +0800 |
From: "Dr. David Alan Gilbert" <address@hidden>
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 <address@hidden>
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Jason Wang <address@hidden>
---
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 9d49f62..b237d90 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 3f319ef..b50f86d 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"
#define VIRTIO_NET_VM_VERSION 11
@@ -164,8 +166,9 @@ static void virtio_net_announce_timer(void *opaque)
{
VirtIONet *n = opaque;
VirtIODevice *vdev = VIRTIO_DEVICE(n);
+ trace_virtio_net_announce_timer(n->announce_timer.round);
- n->announce_counter--;
+ n->announce_timer.round--;
n->status |= VIRTIO_NET_S_ANNOUNCE;
virtio_notify_config(vdev);
}
@@ -479,8 +482,8 @@ static void virtio_net_reset(VirtIODevice *vdev)
n->nobcast = 0;
/* multiqueue is disabled by default */
n->curr_queues = 1;
- timer_del(n->announce_timer);
- n->announce_counter = 0;
+ timer_del(n->announce_timer.tm);
+ n->announce_timer.round = 0;
n->status &= ~VIRTIO_NET_S_ANNOUNCE;
/* Flush any MAC and VLAN filter table state */
@@ -976,13 +979,12 @@ 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 == VIRTIO_NET_CTRL_ANNOUNCE_ACK &&
n->status & VIRTIO_NET_S_ANNOUNCE) {
n->status &= ~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 {
@@ -2298,6 +2300,7 @@ static int virtio_net_post_load_device(void *opaque, int
version_id)
VirtIODevice *vdev = VIRTIO_DEVICE(n);
int i, link_down;
+ 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));
@@ -2334,8 +2337,15 @@ static int virtio_net_post_load_device(void *opaque, int
version_id)
if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) &&
virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) {
- n->announce_counter = SELF_ANNOUNCE_ROUNDS;
- timer_mod(n->announce_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL));
+ qemu_announce_timer_reset(&n->announce_timer,
migrate_announce_params(),
+ 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);
+ }
}
return 0;
@@ -2696,8 +2706,9 @@ static void virtio_net_device_realize(DeviceState *dev,
Error **errp)
qemu_macaddr_default_if_unset(&n->nic_conf.macaddr);
memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac));
n->status = VIRTIO_NET_S_LINK_UP;
- n->announce_timer = 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);
if (n->netclient_type) {
/*
@@ -2760,8 +2771,7 @@ static void virtio_net_device_unrealize(DeviceState *dev,
Error **errp)
virtio_net_del_queue(n, i);
}
- 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 a1a0be3..b96f0c6 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"
#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;
};
--
2.5.0
- [Qemu-devel] [PULL 13/13] net: netmap: improve netmap_receive_iov(), (continued)
- [Qemu-devel] [PULL 13/13] net: netmap: improve netmap_receive_iov(), Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 11/13] net: netmap: small improvements netmap_send(), Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 09/13] hmp: Add hmp_announce_self, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 12/13] net: netmap: simplify netmap_receive(), Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 08/13] qmp: Add announce-self command, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 06/13] net: Add a network device specific self-announcement ability, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 10/13] tests: Add a test for qemu self announcements, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 03/13] migration: Add announce parameters, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 07/13] virtio-net: Allow qemu_announce_self to trigger virtio announcements, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 01/13] net/colo-compare.c: Remove duplicated code, Jason Wang, 2019/02/22
- [Qemu-devel] [PULL 04/13] virtio-net: Switch to using announce timer,
Jason Wang <=
- Re: [Qemu-devel] [PULL 00/13] Netpatches, Peter Maydell, 2019/02/26