Initialize remote communication socket and make a handshack with remote
colo-frame.
Then use this way to notify remote colo-frame do checkpoint.
Signed-off-by: Zhang Chen <zhangchen.f...@cn.fujitsu.com>
---
net/colo-compare.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/net/colo-compare.c b/net/colo-compare.c
index 10a328e..8886640 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -100,6 +100,12 @@ enum {
SECONDARY_IN,
};
+typedef enum ProxyRemoteRequest {
+ USERSPACE_PROXY_INIT = 0,
+ USERSPACE_PROXY_GET_REMOTE_INIT = 1,
+ USERSPACE_PROXY_NOTIFY_CHECKPOINT = 2
+} ProxyRemoteRequest;
+
static int compare_chr_send(CharBackend *out,
const uint8_t *buf,
uint32_t size);
@@ -498,6 +504,18 @@ static void colo_compare_connection(void *opaque, void
*user_data)
trace_colo_compare_main("packet different");
g_queue_push_tail(&conn->primary_list, pkt);
/* TODO: colo_notify_checkpoint();*/
+ /*
+ * If we have notify_dev that means COLO didn't running on KVM,
+ * So we use remote checkpoint notify, Xen is the first user.
+ */
+ if (s->notify_dev) {
+ ProxyRemoteRequest msg = USERSPACE_PROXY_NOTIFY_CHECKPOINT;
+ ret = compare_chr_send(&s->chr_notify_dev, (uint8_t *)msg,
+ sizeof(msg));
+ if (ret < 0) {
+ error_report("Notify remote COLO-frame failed");
+ }
+ }
break;
}
}
@@ -716,7 +734,21 @@ static void compare_sec_rs_finalize(SocketReadState
*sec_rs)
static void compare_notify_rs_finalize(SocketReadState *notify_rs)
{
+ CompareState *s = container_of(notify_rs, CompareState, notify_rs);
+
/* Get remote colo-frame's notify and handle the message */
+ char *data = g_memdup(notify_rs->buf, notify_rs->packet_len);
+ ProxyRemoteRequest msg = USERSPACE_PROXY_GET_REMOTE_INIT;
+ ProxyRemoteRequest msg_recv = *data;
+ int ret;
+
+ if (msg_recv == USERSPACE_PROXY_INIT) {
+ ret = compare_chr_send(&s->chr_notify_dev, (uint8_t *)msg,
+ sizeof(msg));
+ if (ret < 0) {
+ error_report("Notify remote COLO-frame INIT failed");
+ }
+ }
}
/*
--
2.7.4
