*/
#include "qemu/osdep.h"
+#include "qemu-common.h"
#include "qemu/error-report.h"
#include "trace.h"
-#include "qemu-common.h"
#include "qapi/error.h"
#include "net/net.h"
#include "net/eth.h"
#include "net/queue.h"
#include "chardev/char-fe.h"
#include "qemu/sockets.h"
-#include "net/colo.h"
+#include "colo.h"
#include "sysemu/iothread.h"
+#include "net/colo-compare.h"
+#include "migration/colo.h"
+#include "migration/migration.h"
+#include "util.h"
+
+#include "block/aio-wait.h"
+#include "qemu/coroutine.h"
#define TYPE_COLO_COMPARE "colo-compare"
#define COLO_COMPARE(obj) \
OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE)
+static QTAILQ_HEAD(, CompareState) net_compares =
+ QTAILQ_HEAD_INITIALIZER(net_compares);
+
+static NotifierList colo_compare_notifiers =
+ NOTIFIER_LIST_INITIALIZER(colo_compare_notifiers);
+
#define COMPARE_READ_LEN_MAX NET_BUFSIZE
#define MAX_QUEUE_SIZE 1024
#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
+
+static QemuMutex colo_compare_mutex;
+static bool colo_compare_active;
+static QemuMutex event_mtx;
+static QemuCond event_complete_cond;
+static int event_unhandled_count;
/*
* + CompareState ++
* |packet | |packet + |packet | |packet +
* +--------+ +--------+ +--------+ +--------+
*/
+
+typedef struct SendCo {
+ Coroutine *co;
+ struct CompareState *s;
+ CharBackend *chr;
+ GQueue send_list;
+ bool notify_remote_frame;
+ bool done;
+ int ret;
+} SendCo;
+
+typedef struct SendEntry {
+ uint32_t size;
+ uint32_t vnet_hdr_len;
+ uint8_t *buf;
+} SendEntry;
+
typedef struct CompareState {
Object parent;
char *pri_indev;
char *sec_indev;
char *outdev;
+ char *notify_dev;
CharBackend chr_pri_in;
CharBackend chr_sec_in;
CharBackend chr_out;
+ CharBackend chr_notify_dev;
SocketReadState pri_rs;
SocketReadState sec_rs;
+ SocketReadState notify_rs;
+ SendCo out_sendco;
+ SendCo notify_sendco;
bool vnet_hdr;
+ uint32_t compare_timeout;
+ uint32_t expired_scan_cycle;
/*
* Record the connection that through the NIC
IOThread *iothread;
GMainContext *worker_context;
QEMUTimer *packet_check_timer;
+
+ QEMUBH *event_bh;
+ enum colo_event event;
+
+ QTAILQ_ENTRY(CompareState) next;
} CompareState;
typedef struct CompareClass {
SECONDARY_IN,
};
+
static int compare_chr_send(CompareState *s,
- const uint8_t *buf,
+ uint8_t *buf,
uint32_t size,
- uint32_t vnet_hdr_len);
+ uint32_t vnet_hdr_len,
+ bool notify_remote_frame,
+ bool zero_copy);
+
+static bool packet_matches_str(const char *str,
+ const uint8_t *buf,
+ uint32_t packet_len)
+{
+ if (packet_len != strlen(str)) {
+ return false;
+ }
+
+ return !memcmp(str, buf, strlen(str));
+}
+
+static void notify_remote_frame(CompareState *s)
+{
+ char msg[] = "DO_CHECKPOINT";
+ int ret = 0;
+
+ ret = compare_chr_send(s, (uint8_t *)msg, strlen(msg), 0, true, false);
+ if (ret < 0) {
+ error_report("Notify Xen COLO-frame failed");
+ }
+}
+
+static void colo_compare_inconsistency_notify(CompareState *s)
+{
+ if (s->notify_dev) {
+ notify_remote_frame(s);
+ } else {
+ notifier_list_notify(&colo_compare_notifiers,
+ migrate_get_current());
+ }
+}
static gint seq_sorter(Packet *a, Packet *b, gpointer data)
{
- struct tcphdr *atcp, *btcp;
+ struct tcp_hdr *atcp, *btcp;
- atcp = (struct tcphdr *)(a->transport_header);
- btcp = (struct tcphdr *)(b->transport_header);
+ atcp = (struct tcp_hdr *)(a->transport_header);
+ btcp = (struct tcp_hdr *)(b->transport_header);
return ntohl(atcp->th_seq) - ntohl(btcp->th_seq);
}
static void fill_pkt_tcp_info(void *data, uint32_t *max_ack)
{
Packet *pkt = data;
- struct tcphdr *tcphd;
+ struct tcp_hdr *tcphd;
- tcphd = (struct tcphdr *)pkt->transport_header;
+ tcphd = (struct tcp_hdr *)pkt->transport_header;
pkt->tcp_seq = ntohl(tcphd->th_seq);
pkt->tcp_ack = ntohl(tcphd->th_ack);
ret = compare_chr_send(s,
pkt->data,
pkt->size,
- pkt->vnet_hdr_len);
+ pkt->vnet_hdr_len,
+ false,
+ true);
if (ret < 0) {
error_report("colo send primary packet failed");
}
trace_colo_compare_main("packet same and release packet");
- packet_destroy(pkt, NULL);
+ packet_destroy_partial(pkt, NULL);
}
/*
*mark = 0;
if (ppkt->tcp_seq == spkt->tcp_seq && ppkt->seq_end == spkt->seq_end) {
- if (colo_compare_packet_payload(ppkt, spkt,
- ppkt->header_size, spkt->header_size,
- ppkt->payload_size)) {
- *mark = COLO_COMPARE_FREE_SECONDARY | COLO_COMPARE_FREE_PRIMARY;
- return true;
- }
- }
- if (ppkt->tcp_seq == spkt->tcp_seq && ppkt->seq_end == spkt->seq_end) {
- if (colo_compare_packet_payload(ppkt, spkt,
+ if (!colo_compare_packet_payload(ppkt, spkt,
ppkt->header_size, spkt->header_size,
ppkt->payload_size)) {
*mark = COLO_COMPARE_FREE_SECONDARY | COLO_COMPARE_FREE_PRIMARY;
/* one part of secondary packet payload still need to be compared */
if (!after(ppkt->seq_end, spkt->seq_end)) {
- if (colo_compare_packet_payload(ppkt, spkt,
+ if (!colo_compare_packet_payload(ppkt, spkt,
ppkt->header_size + ppkt->offset,
spkt->header_size + spkt->offset,
ppkt->payload_size - ppkt->offset)) {
/* primary packet is longer than secondary packet, compare
* the same part and mark the primary packet offset
*/
- if (colo_compare_packet_payload(ppkt, spkt,
+ if (!colo_compare_packet_payload(ppkt, spkt,
ppkt->header_size + ppkt->offset,
spkt->header_size + spkt->offset,
spkt->payload_size - spkt->offset)) {
g_queue_push_head(&conn->primary_list, ppkt);
g_queue_push_head(&conn->secondary_list, spkt);
- qemu_hexdump((char *)ppkt->data, stderr,
- "colo-compare ppkt", ppkt->size);
- qemu_hexdump((char *)spkt->data, stderr,
- "colo-compare spkt", spkt->size);
+ if (trace_event_get_state_backends(TRACE_COLO_COMPARE_MISCOMPARE)) {
+ qemu_hexdump((char *)ppkt->data, stderr,
+ "colo-compare ppkt", ppkt->size);
+ qemu_hexdump((char *)spkt->data, stderr,
+ "colo-compare spkt", spkt->size);
+ }
- /*
- * colo_compare_inconsistent_notify();
- * TODO: notice to checkpoint();
- */
+ colo_compare_inconsistency_notify(s);
}
}
}
}
+void colo_compare_register_notifier(Notifier *notify)
+{
+ notifier_list_add(&colo_compare_notifiers, notify);
+}
+
+void colo_compare_unregister_notifier(Notifier *notify)
+{
+ notifier_remove(notify);
+}
+
static int colo_old_packet_check_one_conn(Connection *conn,
- void *user_data)
+ CompareState *s)
{
GList *result = NULL;
- int64_t check_time = REGULAR_PACKET_CHECK_MS;
result = g_queue_find_custom(&conn->primary_list,
- &check_time,
+ &s->compare_timeout,
(GCompareFunc)colo_old_packet_check_one);
if (result) {
/* Do checkpoint will flush old packet */
- /*
- * TODO: Notify colo frame to do checkpoint.
- * colo_compare_inconsistent_notify();
- */
+ colo_compare_inconsistency_notify(s);
return 0;
}
* If we find one old packet, stop finding job and notify
* COLO frame do checkpoint.
*/
- g_queue_find_custom(&s->conn_list, NULL,
+ g_queue_find_custom(&s->conn_list, s,
(GCompareFunc)colo_old_packet_check_one_conn);
}
/*
* If one packet arrive late, the secondary_list or
* primary_list will be empty, so we can't compare it
- * until next comparison.
+ * until next comparison. If the packets in the list are
+ * timeout, it will trigger a checkpoint request.
*/
trace_colo_compare_main("packet different");
g_queue_push_head(&conn->primary_list, pkt);
- /* TODO: colo_notify_checkpoint();*/
+
+ colo_compare_inconsistency_notify(s);
break;
}
}
}
}
-static int compare_chr_send(CompareState *s,
- const uint8_t *buf,
- uint32_t size,
- uint32_t vnet_hdr_len)
+static void coroutine_fn _compare_chr_send(void *opaque)
{
+ SendCo *sendco = opaque;
+ CompareState *s = sendco->s;
int ret = 0;
- uint32_t len = htonl(size);
- if (!size) {
- return 0;
- }
+ while (!g_queue_is_empty(&sendco->send_list)) {
+ SendEntry *entry = g_queue_pop_tail(&sendco->send_list);
+ uint32_t len = htonl(entry->size);
- ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len, sizeof(len));
- if (ret != sizeof(len)) {
- goto err;
- }
+ ret = qemu_chr_fe_write_all(sendco->chr, (uint8_t *)&len, sizeof(len));
- if (s->vnet_hdr) {
- /*
- * We send vnet header len make other module(like filter-redirector)
- * know how to parse net packet correctly.
- */
- len = htonl(vnet_hdr_len);
- ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len, sizeof(len));
if (ret != sizeof(len)) {
+ g_free(entry->buf);
+ g_slice_free(SendEntry, entry);
goto err;
}
- }
- ret = qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf, size);
- if (ret != size) {
- goto err;
+ if (!sendco->notify_remote_frame && s->vnet_hdr) {
+ /*
+ * We send vnet header len make other module(like filter-redirector)
+ * know how to parse net packet correctly.
+ */
+ len = htonl(entry->vnet_hdr_len);
+
+ ret = qemu_chr_fe_write_all(sendco->chr,
+ (uint8_t *)&len,
+ sizeof(len));
+
+ if (ret != sizeof(len)) {
+ g_free(entry->buf);
+ g_slice_free(SendEntry, entry);
+ goto err;
+ }
+ }
+
+ ret = qemu_chr_fe_write_all(sendco->chr,
+ (uint8_t *)entry->buf,
+ entry->size);
+
+ if (ret != entry->size) {
+ g_free(entry->buf);
+ g_slice_free(SendEntry, entry);
+ goto err;
+ }
+
+ g_free(entry->buf);
+ g_slice_free(SendEntry, entry);
}
- return 0;
+ sendco->ret = 0;
+ goto out;
err:
- return ret < 0 ? ret : -EIO;
+ while (!g_queue_is_empty(&sendco->send_list)) {
+ SendEntry *entry = g_queue_pop_tail(&sendco->send_list);
+ g_free(entry->buf);
+ g_slice_free(SendEntry, entry);
+ }
+ sendco->ret = ret < 0 ? ret : -EIO;
+out:
+ sendco->co = NULL;
+ sendco->done = true;
+ aio_wait_kick();
+}
+
+static int compare_chr_send(CompareState *s,
+ uint8_t *buf,
+ uint32_t size,
+ uint32_t vnet_hdr_len,
+ bool notify_remote_frame,
+ bool zero_copy)
+{
+ SendCo *sendco;
+ SendEntry *entry;
+
+ if (notify_remote_frame) {
+ sendco = &s->notify_sendco;
+ } else {
+ sendco = &s->out_sendco;
+ }
+
+ if (!size) {
+ return 0;
+ }
+
+ entry = g_slice_new(SendEntry);
+ entry->size = size;
+ entry->vnet_hdr_len = vnet_hdr_len;
+ if (zero_copy) {
+ entry->buf = buf;
+ } else {
+ entry->buf = g_malloc(size);
+ memcpy(entry->buf, buf, size);
+ }
+ g_queue_push_head(&sendco->send_list, entry);
+
+ if (sendco->done) {
+ sendco->co = qemu_coroutine_create(_compare_chr_send, sendco);
+ sendco->done = false;
+ qemu_coroutine_enter(sendco->co);
+ if (sendco->done) {
+ /* report early errors */
+ return sendco->ret;
+ }
+ }
+
+ /* assume success */
+ return 0;
}
static int compare_chr_can_read(void *opaque)
}
}
+static void compare_notify_chr(void *opaque, const uint8_t *buf, int size)
+{
+ CompareState *s = COLO_COMPARE(opaque);
+ int ret;
+
+ ret = net_fill_rstate(&s->notify_rs, buf, size);
+ if (ret == -1) {
+ qemu_chr_fe_set_handlers(&s->chr_notify_dev, NULL, NULL, NULL, NULL,
+ NULL, NULL, true);
+ error_report("colo-compare notify_dev error");
+ }
+}
+
/*
* Check old packet regularly so it can watch for any packets
* that the secondary hasn't produced equivalents of.
/* 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 */
+void colo_notify_compares_event(void *opaque, int event, Error **errp)
+{
+ CompareState *s;
+ qemu_mutex_lock(&colo_compare_mutex);
+
+ if (!colo_compare_active) {
+ qemu_mutex_unlock(&colo_compare_mutex);
+ return;
+ }
+
+ qemu_mutex_lock(&event_mtx);
+ QTAILQ_FOREACH(s, &net_compares, next) {
+ s->event = event;
+ qemu_bh_schedule(s->event_bh);
+ event_unhandled_count++;
+ }
+ /* Wait all compare threads to finish handling this event */
+ while (event_unhandled_count > 0) {
+ qemu_cond_wait(&event_complete_cond, &event_mtx);
+ }
+
+ qemu_mutex_unlock(&event_mtx);
+ qemu_mutex_unlock(&colo_compare_mutex);
}
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)
}
}
+static void colo_flush_packets(void *opaque, void *user_data);
+
+static void colo_compare_handle_event(void *opaque)
+{
+ CompareState *s = opaque;
+
+ switch (s->event) {
+ case COLO_EVENT_CHECKPOINT:
+ g_queue_foreach(&s->conn_list, colo_flush_packets, s);
+ break;
+ case COLO_EVENT_FAILOVER:
+ break;
+ default:
+ break;
+ }
+
+ qemu_mutex_lock(&event_mtx);
+ assert(event_unhandled_count > 0);
+ event_unhandled_count--;
+ qemu_cond_broadcast(&event_complete_cond);
+ qemu_mutex_unlock(&event_mtx);
+}
+
static void colo_compare_iothread(CompareState *s)
{
+ AioContext *ctx = iothread_get_aio_context(s->iothread);
object_ref(OBJECT(s->iothread));
s->worker_context = iothread_get_g_main_context(s->iothread);
qemu_chr_fe_set_handlers(&s->chr_sec_in, compare_chr_can_read,
compare_sec_chr_in, NULL, NULL,
s, s->worker_context, true);
+ if (s->notify_dev) {
+ qemu_chr_fe_set_handlers(&s->chr_notify_dev, compare_chr_can_read,
+ compare_notify_chr, NULL, NULL,
+ s, s->worker_context, true);
+ }
colo_compare_timer_init(s);
+ s->event_bh = aio_bh_new(ctx, colo_compare_handle_event, s);
}
static char *compare_get_pri_indev(Object *obj, Error **errp)
s->vnet_hdr = value;
}
+static char *compare_get_notify_dev(Object *obj, Error **errp)
+{
+ CompareState *s = COLO_COMPARE(obj);
+
+ return g_strdup(s->notify_dev);
+}
+
+static void compare_set_notify_dev(Object *obj, const char *value, Error **errp)
+{
+ CompareState *s = COLO_COMPARE(obj);
+
+ g_free(s->notify_dev);
+ s->notify_dev = g_strdup(value);
+}
+
+static void compare_get_timeout(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+{
+ CompareState *s = COLO_COMPARE(obj);
+ uint32_t value = s->compare_timeout;
+
+ visit_type_uint32(v, name, &value, errp);
+}
+
+static void compare_set_timeout(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->compare_timeout = value;
+
+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);
compare_chr_send(s,
pri_rs->buf,
pri_rs->packet_len,
- pri_rs->vnet_hdr_len);
+ pri_rs->vnet_hdr_len,
+ false,
+ false);
} else {
/* compare packet in the specified connection */
colo_compare_connection(conn, s);
}
}
+static void compare_notify_rs_finalize(SocketReadState *notify_rs)
+{
+ CompareState *s = container_of(notify_rs, CompareState, notify_rs);
+
+ const char msg[] = "COLO_COMPARE_GET_XEN_INIT";
+ int ret;
+
+ if (packet_matches_str("COLO_USERSPACE_PROXY_INIT",
+ notify_rs->buf,
+ notify_rs->packet_len)) {
+ ret = compare_chr_send(s, (uint8_t *)msg, strlen(msg), 0, true, false);
+ if (ret < 0) {
+ error_report("Notify Xen COLO-frame INIT failed");
+ }
+ } else if (packet_matches_str("COLO_CHECKPOINT",
+ notify_rs->buf,
+ notify_rs->packet_len)) {
+ /* colo-compare do checkpoint, flush pri packet and remove sec packet */
+ g_queue_foreach(&s->conn_list, colo_flush_packets, s);
+ } else {
+ error_report("COLO compare got unsupported instruction");
+ }
+}
/*
* Return 0 is success.
return 1;
}
+ if (!qemu_chr_has_feature(*chr, QEMU_CHAR_FEATURE_GCONTEXT)) {
+ error_setg(errp, "chardev \"%s\" cannot switch context",
+ chr_name);
+ return 1;
+ }
+
return 0;
}
return;
}
+ if (!s->compare_timeout) {
+ /* Set default value to 3000 MS */
+ 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;
net_socket_rs_init(&s->pri_rs, compare_pri_rs_finalize, s->vnet_hdr);
net_socket_rs_init(&s->sec_rs, compare_sec_rs_finalize, s->vnet_hdr);
+ /* Try to enable remote notify chardev, currently just for Xen COLO */
+ if (s->notify_dev) {
+ if (find_and_check_chardev(&chr, s->notify_dev, errp) ||
+ !qemu_chr_fe_init(&s->chr_notify_dev, chr, errp)) {
+ return;
+ }
+
+ net_socket_rs_init(&s->notify_rs, compare_notify_rs_finalize,
+ s->vnet_hdr);
+ }
+
+ s->out_sendco.s = s;
+ s->out_sendco.chr = &s->chr_out;
+ s->out_sendco.notify_remote_frame = false;
+ s->out_sendco.done = true;
+ g_queue_init(&s->out_sendco.send_list);
+
+ if (s->notify_dev) {
+ s->notify_sendco.s = s;
+ s->notify_sendco.chr = &s->chr_notify_dev;
+ s->notify_sendco.notify_remote_frame = true;
+ s->notify_sendco.done = true;
+ g_queue_init(&s->notify_sendco.send_list);
+ }
+
g_queue_init(&s->conn_list);
s->connection_track_table = g_hash_table_new_full(connection_key_hash,
connection_destroy);
colo_compare_iothread(s);
+
+ qemu_mutex_lock(&colo_compare_mutex);
+ if (!colo_compare_active) {
+ qemu_mutex_init(&event_mtx);
+ qemu_cond_init(&event_complete_cond);
+ colo_compare_active = true;
+ }
+ QTAILQ_INSERT_TAIL(&net_compares, s, next);
+ qemu_mutex_unlock(&colo_compare_mutex);
+
return;
}
compare_chr_send(s,
pkt->data,
pkt->size,
- pkt->vnet_hdr_len);
- packet_destroy(pkt, NULL);
+ pkt->vnet_hdr_len,
+ false,
+ true);
+ packet_destroy_partial(pkt, NULL);
}
while (!g_queue_is_empty(&conn->secondary_list)) {
pkt = g_queue_pop_head(&conn->secondary_list);
CompareState *s = COLO_COMPARE(obj);
object_property_add_str(obj, "primary_in",
- compare_get_pri_indev, compare_set_pri_indev,
- NULL);
+ compare_get_pri_indev, compare_set_pri_indev);
object_property_add_str(obj, "secondary_in",
- compare_get_sec_indev, compare_set_sec_indev,
- NULL);
+ compare_get_sec_indev, compare_set_sec_indev);
object_property_add_str(obj, "outdev",
- compare_get_outdev, compare_set_outdev,
- NULL);
+ compare_get_outdev, compare_set_outdev);
object_property_add_link(obj, "iothread", TYPE_IOTHREAD,
(Object **)&s->iothread,
object_property_allow_set_link,
- OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
+ OBJ_PROP_LINK_STRONG);
+ /* This parameter just for Xen COLO */
+ object_property_add_str(obj, "notify_dev",
+ compare_get_notify_dev, compare_set_notify_dev);
+
+ object_property_add(obj, "compare_timeout", "uint32",
+ compare_get_timeout,
+ compare_set_timeout, NULL, NULL);
+
+ object_property_add(obj, "expired_scan_cycle", "uint32",
+ compare_get_expired_scan_cycle,
+ compare_set_expired_scan_cycle, NULL, NULL);
s->vnet_hdr = false;
object_property_add_bool(obj, "vnet_hdr_support", compare_get_vnet_hdr,
- compare_set_vnet_hdr, NULL);
+ compare_set_vnet_hdr);
}
static void colo_compare_finalize(Object *obj)
{
CompareState *s = COLO_COMPARE(obj);
+ CompareState *tmp = NULL;
+
+ qemu_mutex_lock(&colo_compare_mutex);
+ QTAILQ_FOREACH(tmp, &net_compares, next) {
+ if (tmp == s) {
+ QTAILQ_REMOVE(&net_compares, s, next);
+ break;
+ }
+ }
+ if (QTAILQ_EMPTY(&net_compares)) {
+ colo_compare_active = false;
+ qemu_mutex_destroy(&event_mtx);
+ qemu_cond_destroy(&event_complete_cond);
+ }
+ qemu_mutex_unlock(&colo_compare_mutex);
qemu_chr_fe_deinit(&s->chr_pri_in, false);
qemu_chr_fe_deinit(&s->chr_sec_in, false);
qemu_chr_fe_deinit(&s->chr_out, false);
+ if (s->notify_dev) {
+ qemu_chr_fe_deinit(&s->chr_notify_dev, false);
+ }
+
if (s->iothread) {
colo_compare_timer_del(s);
}
+
+ qemu_bh_delete(s->event_bh);
+
+ AioContext *ctx = iothread_get_aio_context(s->iothread);
+ aio_context_acquire(ctx);
+ AIO_WAIT_WHILE(ctx, !s->out_sendco.done);
+ if (s->notify_dev) {
+ AIO_WAIT_WHILE(ctx, !s->notify_sendco.done);
+ }
+ aio_context_release(ctx);
+
/* Release all unhandled packets after compare thead exited */
g_queue_foreach(&s->conn_list, colo_flush_packets, s);
+ AIO_WAIT_WHILE(NULL, !s->out_sendco.done);
g_queue_clear(&s->conn_list);
+ g_queue_clear(&s->out_sendco.send_list);
+ if (s->notify_dev) {
+ g_queue_clear(&s->notify_sendco.send_list);
+ }
if (s->connection_track_table) {
g_hash_table_destroy(s->connection_track_table);
if (s->iothread) {
object_unref(OBJECT(s->iothread));
}
+
g_free(s->pri_indev);
g_free(s->sec_indev);
g_free(s->outdev);
+ g_free(s->notify_dev);
+}
+
+static void __attribute__((__constructor__)) colo_compare_init_globals(void)
+{
+ colo_compare_active = false;
+ qemu_mutex_init(&colo_compare_mutex);
}
static const TypeInfo colo_compare_info = {
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