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virtio-serial: move active ports loading to separate function 

The virtio_serial_load() function became too big, split the code that
gets the port info from the source into a separate function.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Amit Shah 2012-11-29 17:02:14 +05:30
parent c3587ca1a2
commit 2e575a86ab
1 changed files with 55 additions and 41 deletions
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96
hw/virtio-serial-bus.c
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@ -658,10 +658,60 @@ static void virtio_serial_post_load_timer_cb(void *opaque)
s->post_load.connected = NULL;
}
static int fetch_active_ports_list(QEMUFile *f, int version_id,
VirtIOSerial *s, uint32_t nr_active_ports)
{
uint32_t i;
s->post_load.nr_active_ports = nr_active_ports;
s->post_load.connected =
g_malloc0(sizeof(*s->post_load.connected) * nr_active_ports);
/* Items in struct VirtIOSerialPort */
for (i = 0; i < nr_active_ports; i++) {
VirtIOSerialPort *port;
uint32_t id;
id = qemu_get_be32(f);
port = find_port_by_id(s, id);
if (!port) {
return -EINVAL;
}
port->guest_connected = qemu_get_byte(f);
s->post_load.connected[i].port = port;
s->post_load.connected[i].host_connected = qemu_get_byte(f);
if (version_id > 2) {
uint32_t elem_popped;
qemu_get_be32s(f, &elem_popped);
if (elem_popped) {
qemu_get_be32s(f, &port->iov_idx);
qemu_get_be64s(f, &port->iov_offset);
qemu_get_buffer(f, (unsigned char *)&port->elem,
sizeof(port->elem));
virtqueue_map_sg(port->elem.in_sg, port->elem.in_addr,
port->elem.in_num, 1);
virtqueue_map_sg(port->elem.out_sg, port->elem.out_addr,
port->elem.out_num, 1);
/*
* Port was throttled on source machine. Let's
* unthrottle it here so data starts flowing again.
*/
virtio_serial_throttle_port(port, false);
}
}
}
qemu_mod_timer(s->post_load.timer, 1);
return 0;
}
static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
{
VirtIOSerial *s = opaque;
VirtIOSerialPort *port;
uint32_t max_nr_ports, nr_active_ports, ports_map;
unsigned int i;
int ret;
@ -705,48 +755,12 @@ static int virtio_serial_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_be32s(f, &nr_active_ports);
s->post_load.nr_active_ports = nr_active_ports;
s->post_load.connected =
g_malloc0(sizeof(*s->post_load.connected) * nr_active_ports);
/* Items in struct VirtIOSerialPort */
for (i = 0; i < nr_active_ports; i++) {
uint32_t id;
id = qemu_get_be32(f);
port = find_port_by_id(s, id);
if (!port) {
return -EINVAL;
}
port->guest_connected = qemu_get_byte(f);
s->post_load.connected[i].port = port;
s->post_load.connected[i].host_connected = qemu_get_byte(f);
if (version_id > 2) {
uint32_t elem_popped;
qemu_get_be32s(f, &elem_popped);
if (elem_popped) {
qemu_get_be32s(f, &port->iov_idx);
qemu_get_be64s(f, &port->iov_offset);
qemu_get_buffer(f, (unsigned char *)&port->elem,
sizeof(port->elem));
virtqueue_map_sg(port->elem.in_sg, port->elem.in_addr,
port->elem.in_num, 1);
virtqueue_map_sg(port->elem.out_sg, port->elem.out_addr,
port->elem.out_num, 1);
/*
* Port was throttled on source machine. Let's
* unthrottle it here so data starts flowing again.
*/
virtio_serial_throttle_port(port, false);
}
if (nr_active_ports) {
ret = fetch_active_ports_list(f, version_id, s, nr_active_ports);
if (ret) {
return ret;
}
}
qemu_mod_timer(s->post_load.timer, 1);
return 0;
}