diff options
| -rw-r--r-- | net/net.c | 33 |
1 files changed, 32 insertions, 1 deletions
@@ -48,6 +48,7 @@ # define CONFIG_NET_BRIDGE #endif +static VMChangeStateEntry *net_change_state_entry; static QTAILQ_HEAD(, NetClientState) net_clients; const char *host_net_devices[] = { @@ -511,7 +512,8 @@ void qemu_purge_queued_packets(NetClientState *nc) qemu_net_queue_purge(nc->peer->incoming_queue, nc); } -void qemu_flush_queued_packets(NetClientState *nc) +static +void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge) { nc->receive_disabled = 0; @@ -525,9 +527,17 @@ void qemu_flush_queued_packets(NetClientState *nc) * the file descriptor (for tap, for example). */ qemu_notify_event(); + } else if (purge) { + /* Unable to empty the queue, purge remaining packets */ + qemu_net_queue_purge(nc->incoming_queue, nc); } } +void qemu_flush_queued_packets(NetClientState *nc) +{ + qemu_flush_or_purge_queued_packets(nc, false); +} + static ssize_t qemu_send_packet_async_with_flags(NetClientState *sender, unsigned flags, const uint8_t *buf, int size, @@ -1175,6 +1185,22 @@ void qmp_set_link(const char *name, bool up, Error **errp) } } +static void net_vm_change_state_handler(void *opaque, int running, + RunState state) +{ + /* Complete all queued packets, to guarantee we don't modify + * state later when VM is not running. + */ + if (!running) { + NetClientState *nc; + NetClientState *tmp; + + QTAILQ_FOREACH_SAFE(nc, &net_clients, next, tmp) { + qemu_flush_or_purge_queued_packets(nc, true); + } + } +} + void net_cleanup(void) { NetClientState *nc; @@ -1190,6 +1216,8 @@ void net_cleanup(void) qemu_del_net_client(nc); } } + + qemu_del_vm_change_state_handler(net_change_state_entry); } void net_check_clients(void) @@ -1275,6 +1303,9 @@ int net_init_clients(void) #endif } + net_change_state_entry = + qemu_add_vm_change_state_handler(net_vm_change_state_handler, NULL); + QTAILQ_INIT(&net_clients); if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1) |