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net/colo-compare.c: Expose "expired_scan_cycle" to users

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The "expired_scan_cycle" determines period of scanning expired
primary node net packets.

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhang Chen 2020-03-18 16:23:20 +08:00 committed by Jason Wang
parent 9cc43c94b3
commit cca35ac4d1
2 changed files with 48 additions and 4 deletions
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48
net/colo-compare.c
View File

@ -48,7 +48,6 @@ static NotifierList colo_compare_notifiers =
#define COLO_COMPARE_FREE_PRIMARY 0x01
#define COLO_COMPARE_FREE_SECONDARY 0x02
/* TODO: Should be configurable */
#define REGULAR_PACKET_CHECK_MS 3000
#define DEFAULT_TIME_OUT_MS 3000
@ -94,6 +93,7 @@ typedef struct CompareState {
SocketReadState notify_rs;
bool vnet_hdr;
uint32_t compare_timeout;
uint32_t expired_scan_cycle;
/*
* Record the connection that through the NIC
@ -823,7 +823,7 @@ static void check_old_packet_regular(void *opaque)
/* if have old packet we will notify checkpoint */
colo_old_packet_check(s);
timer_mod(s->packet_check_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
REGULAR_PACKET_CHECK_MS);
s->expired_scan_cycle);
}
/* Public API, Used for COLO frame to notify compare event */
@ -853,7 +853,7 @@ static void colo_compare_timer_init(CompareState *s)
SCALE_MS, check_old_packet_regular,
s);
timer_mod(s->packet_check_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
REGULAR_PACKET_CHECK_MS);
s->expired_scan_cycle);
}
static void colo_compare_timer_del(CompareState *s)
@ -1018,6 +1018,39 @@ out:
error_propagate(errp, local_err);
}
static void compare_get_expired_scan_cycle(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
CompareState *s = COLO_COMPARE(obj);
uint32_t value = s->expired_scan_cycle;
visit_type_uint32(v, name, &value, errp);
}
static void compare_set_expired_scan_cycle(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
CompareState *s = COLO_COMPARE(obj);
Error *local_err = NULL;
uint32_t value;
visit_type_uint32(v, name, &value, &local_err);
if (local_err) {
goto out;
}
if (!value) {
error_setg(&local_err, "Property '%s.%s' requires a positive value",
object_get_typename(obj), name);
goto out;
}
s->expired_scan_cycle = value;
out:
error_propagate(errp, local_err);
}
static void compare_pri_rs_finalize(SocketReadState *pri_rs)
{
CompareState *s = container_of(pri_rs, CompareState, pri_rs);
@ -1129,6 +1162,11 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
s->compare_timeout = DEFAULT_TIME_OUT_MS;
}
if (!s->expired_scan_cycle) {
/* Set default value to 3000 MS */
s->expired_scan_cycle = REGULAR_PACKET_CHECK_MS;
}
if (find_and_check_chardev(&chr, s->pri_indev, errp) ||
!qemu_chr_fe_init(&s->chr_pri_in, chr, errp)) {
return;
@ -1228,6 +1266,10 @@ static void colo_compare_init(Object *obj)
compare_get_timeout,
compare_set_timeout, NULL, NULL, NULL);
object_property_add(obj, "expired_scan_cycle", "uint32",
compare_get_expired_scan_cycle,
compare_set_expired_scan_cycle, NULL, NULL, NULL);
s->vnet_hdr = false;
object_property_add_bool(obj, "vnet_hdr_support", compare_get_vnet_hdr,
compare_set_vnet_hdr, NULL);

4
qemu-options.hx
View File

@ -4615,7 +4615,7 @@ SRST
stored. The file format is libpcap, so it can be analyzed with
tools such as tcpdump or Wireshark.
``-object colo-compare,id=id,primary_in=chardevid,secondary_in=chardevid,outdev=chardevid,iothread=id[,vnet_hdr_support][,notify_dev=id][,compare_timeout=@var{ms}]``
``-object colo-compare,id=id,primary_in=chardevid,secondary_in=chardevid,outdev=chardevid,iothread=id[,vnet_hdr_support][,notify_dev=id][,compare_timeout=@var{ms}][,expired_scan_cycle=@var{ms}``
Colo-compare gets packet from primary\_inchardevid and
secondary\_inchardevid, than compare primary packet with
secondary packet. If the packets are same, we will output
@ -4626,6 +4626,8 @@ SRST
vnet\_hdr\_support flag, colo compare will send/recv packet with
vnet\_hdr\_len. Then compare\_timeout=@var{ms} determines the
maximum delay colo-compare wait for the packet.
The expired\_scan\_cycle=@var{ms} to set the period of scanning
expired primary node network packets.
If you want to use Xen COLO, will need the notify\_dev to
notify Xen colo-frame to do checkpoint.