/*
* Net VSC on device add
*
* Callback when the device belonging to this driver is added
*/
netvsc_dev *
hv_nv_on_device_add(struct hv_device *device, void *additional_info)
{
struct hv_vmbus_channel *chan = device->channel;
netvsc_dev *net_dev;
int ret = 0;
net_dev = hv_nv_alloc_net_device(device);
if (net_dev == NULL)
return NULL;
/* Initialize the NetVSC channel extension */
sema_init(&net_dev->channel_init_sema, 0, "netdev_sema");
chan->hv_chan_rdbuf = malloc(NETVSC_PACKET_SIZE, M_NETVSC, M_WAITOK);
/*
* Open the channel
*/
ret = hv_vmbus_channel_open(chan,
NETVSC_DEVICE_RING_BUFFER_SIZE, NETVSC_DEVICE_RING_BUFFER_SIZE,
NULL, 0, hv_nv_on_channel_callback, chan);
if (ret != 0) {
free(chan->hv_chan_rdbuf, M_NETVSC);
goto cleanup;
}
/*
* Connect with the NetVsp
*/
ret = hv_nv_connect_to_vsp(device);
if (ret != 0)
goto close;
return (net_dev);
close:
/* Now, we can close the channel safely */
free(chan->hv_chan_rdbuf, M_NETVSC);
hv_vmbus_channel_close(chan);
cleanup:
/*
* Free the packet buffers on the netvsc device packet queue.
* Release other resources.
*/
if (net_dev) {
sema_destroy(&net_dev->channel_init_sema);
free(net_dev, M_NETVSC);
}
return (NULL);
}
/*
* Net VSC on device add
*
* Callback when the device belonging to this driver is added
*/
netvsc_dev *
hv_nv_on_device_add(struct hn_softc *sc, void *additional_info,
struct hn_rx_ring *rxr)
{
struct vmbus_channel *chan = sc->hn_prichan;
netvsc_dev *net_dev;
int ret = 0;
net_dev = hv_nv_alloc_net_device(sc);
if (net_dev == NULL)
return NULL;
/* Initialize the NetVSC channel extension */
sema_init(&net_dev->channel_init_sema, 0, "netdev_sema");
/*
* Open the channel
*/
KASSERT(rxr->hn_rx_idx == vmbus_chan_subidx(chan),
("chan%u subidx %u, rxr%d mismatch",
vmbus_chan_id(chan), vmbus_chan_subidx(chan), rxr->hn_rx_idx));
ret = vmbus_chan_open(chan,
NETVSC_DEVICE_RING_BUFFER_SIZE, NETVSC_DEVICE_RING_BUFFER_SIZE,
NULL, 0, hv_nv_on_channel_callback, rxr);
if (ret != 0)
goto cleanup;
/*
* Connect with the NetVsp
*/
ret = hv_nv_connect_to_vsp(sc);
if (ret != 0)
goto close;
return (net_dev);
close:
/* Now, we can close the channel safely */
vmbus_chan_close(chan);
cleanup:
/*
* Free the packet buffers on the netvsc device packet queue.
* Release other resources.
*/
sema_destroy(&net_dev->channel_init_sema);
free(net_dev, M_NETVSC);
return (NULL);
}
