static void
vmbus_timesync_cb(struct vmbus_channel *chan, void *xsc)
{
struct hv_util_sc *sc = xsc;
struct vmbus_icmsg_hdr *hdr;
const struct vmbus_icmsg_timesync *msg;
int dlen, error;
uint64_t xactid;
void *data;
/*
* Receive request.
*/
data = sc->receive_buffer;
dlen = sc->ic_buflen;
error = vmbus_chan_recv(chan, data, &dlen, &xactid);
KASSERT(error != ENOBUFS, ("icbuf is not large enough"));
if (error)
return;
if (dlen < sizeof(*hdr)) {
device_printf(sc->ic_dev, "invalid data len %d\n", dlen);
return;
}
hdr = data;
/*
* Update request, which will be echoed back as response.
*/
switch (hdr->ic_type) {
case VMBUS_ICMSG_TYPE_NEGOTIATE:
error = vmbus_ic_negomsg(sc, data, &dlen,
VMBUS_TIMESYNC_FWVER, VMBUS_TIMESYNC_MSGVER);
if (error)
return;
break;
case VMBUS_ICMSG_TYPE_TIMESYNC:
if (dlen < sizeof(*msg)) {
device_printf(sc->ic_dev, "invalid timesync len %d\n",
dlen);
return;
}
msg = data;
vmbus_timesync(sc, msg->ic_hvtime, msg->ic_tsflags);
break;
default:
device_printf(sc->ic_dev, "got 0x%08x icmsg\n", hdr->ic_type);
break;
}
/*
* Send response by echoing the updated request back.
*/
hdr->ic_flags = VMBUS_ICMSG_FLAG_XACT | VMBUS_ICMSG_FLAG_RESP;
error = vmbus_chan_send(chan, VMBUS_CHANPKT_TYPE_INBAND, 0,
data, dlen, xactid);
if (error)
device_printf(sc->ic_dev, "resp send failed: %d\n", error);
}
static void
vmbus_timesync_cb(struct vmbus_channel *chan, void *xsc)
{
struct vmbus_ic_softc *sc = xsc;
struct vmbus_icmsg_hdr *hdr;
int dlen, error;
uint64_t xactid;
void *data;
/*
* Receive request.
*/
data = sc->ic_buf;
dlen = sc->ic_buflen;
error = vmbus_chan_recv(chan, data, &dlen, &xactid);
KASSERT(error != ENOBUFS, ("icbuf is not large enough"));
if (error)
return;
if (dlen < sizeof(*hdr)) {
device_printf(sc->ic_dev, "invalid data len %d\n", dlen);
return;
}
hdr = data;
/*
* Update request, which will be echoed back as response.
*/
switch (hdr->ic_type) {
case VMBUS_ICMSG_TYPE_NEGOTIATE:
error = vmbus_ic_negomsg(sc, data, &dlen,
VMBUS_TIMESYNC_FWVER, VMBUS_TIMESYNC_MSGVER);
if (error)
return;
if (VMBUS_TIMESYNC_DORTT(sc))
device_printf(sc->ic_dev, "RTT\n");
break;
case VMBUS_ICMSG_TYPE_TIMESYNC:
if (VMBUS_TIMESYNC_MSGVER4(sc)) {
const struct vmbus_icmsg_timesync4 *msg4;
if (dlen < sizeof(*msg4)) {
device_printf(sc->ic_dev, "invalid timesync4 "
"len %d\n", dlen);
return;
}
msg4 = data;
vmbus_timesync(sc, msg4->ic_hvtime, msg4->ic_sent_tc,
msg4->ic_tsflags);
} else {
const struct vmbus_icmsg_timesync *msg;
if (dlen < sizeof(*msg)) {
device_printf(sc->ic_dev, "invalid timesync "
"len %d\n", dlen);
return;
}
msg = data;
vmbus_timesync(sc, msg->ic_hvtime, 0, msg->ic_tsflags);
}
break;
default:
device_printf(sc->ic_dev, "got 0x%08x icmsg\n", hdr->ic_type);
break;
}
/*
* Send response by echoing the request back.
*/
vmbus_ic_sendresp(sc, chan, data, dlen, xactid);
}
