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COLO-compare: Add remote notification chardev handler frame 

Add chardev handler to send notification to remote(current from Xen) colo-frame.

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Zhang Chen 2019-06-10 00:44:30 +08:00 committed by Jason Wang
parent cf6af766f4
commit 13025fee7f
1 changed files with 39 additions and 0 deletions
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39
net/colo-compare.c
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@ -87,8 +87,10 @@ typedef struct CompareState {
CharBackend chr_pri_in;
CharBackend chr_sec_in;
CharBackend chr_out;
CharBackend chr_notify_dev;
SocketReadState pri_rs;
SocketReadState sec_rs;
SocketReadState notify_rs;
bool vnet_hdr;
/*
@ -745,6 +747,19 @@ static void compare_sec_chr_in(void *opaque, const uint8_t *buf, int size)
}
}
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.
@ -832,6 +847,11 @@ static void colo_compare_iothread(CompareState *s)
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 = qemu_bh_new(colo_compare_handle_event, s);
@ -943,6 +963,10 @@ static void compare_sec_rs_finalize(SocketReadState *sec_rs)
}
}
static void compare_notify_rs_finalize(SocketReadState *notify_rs)
{
/* Get Xen colo-frame's notify and handle the message */
}
/*
* Return 0 is success.
@ -1013,6 +1037,17 @@ static void colo_compare_complete(UserCreatable *uc, Error **errp)
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);
}
QTAILQ_INSERT_TAIL(&net_compares, s, next);
g_queue_init(&s->conn_list);
@ -1091,6 +1126,10 @@ static void colo_compare_finalize(Object *obj)
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);
}