/*
* Net VSC on receive
*
* In the FreeBSD Hyper-V virtual world, this function deals exclusively
* with virtual addresses.
*/
static void
hv_nv_on_receive(netvsc_dev *net_dev, struct hn_rx_ring *rxr,
struct vmbus_channel *chan, const struct vmbus_chanpkt_hdr *pkthdr)
{
const struct vmbus_chanpkt_rxbuf *pkt;
const nvsp_msg *nvsp_msg_pkt;
netvsc_packet vsc_pkt;
netvsc_packet *net_vsc_pkt = &vsc_pkt;
int count = 0;
int i = 0;
int status = nvsp_status_success;
nvsp_msg_pkt = VMBUS_CHANPKT_CONST_DATA(pkthdr);
/* Make sure this is a valid nvsp packet */
if (nvsp_msg_pkt->hdr.msg_type != nvsp_msg_1_type_send_rndis_pkt) {
if_printf(rxr->hn_ifp, "packet hdr type %u is invalid!\n",
nvsp_msg_pkt->hdr.msg_type);
return;
}
pkt = (const struct vmbus_chanpkt_rxbuf *)pkthdr;
if (pkt->cp_rxbuf_id != NETVSC_RECEIVE_BUFFER_ID) {
if_printf(rxr->hn_ifp, "rxbuf_id %d is invalid!\n",
pkt->cp_rxbuf_id);
return;
}
count = pkt->cp_rxbuf_cnt;
/* Each range represents 1 RNDIS pkt that contains 1 Ethernet frame */
for (i = 0; i < count; i++) {
net_vsc_pkt->status = nvsp_status_success;
net_vsc_pkt->data = ((uint8_t *)net_dev->rx_buf +
pkt->cp_rxbuf[i].rb_ofs);
net_vsc_pkt->tot_data_buf_len = pkt->cp_rxbuf[i].rb_len;
hv_rf_on_receive(net_dev, rxr, net_vsc_pkt);
if (net_vsc_pkt->status != nvsp_status_success) {
status = nvsp_status_failure;
}
}
/*
* Moved completion call back here so that all received
* messages (not just data messages) will trigger a response
* message back to the host.
*/
hv_nv_on_receive_completion(chan, pkt->cp_hdr.cph_xactid, status);
}
/*
* Net VSC on receive
*
* In the FreeBSD Hyper-V virtual world, this function deals exclusively
* with virtual addresses.
*/
static void
hv_nv_on_receive(netvsc_dev *net_dev, struct hv_device *device,
struct hv_vmbus_channel *chan, hv_vm_packet_descriptor *pkt)
{
hv_vm_transfer_page_packet_header *vm_xfer_page_pkt;
nvsp_msg *nvsp_msg_pkt;
netvsc_packet vsc_pkt;
netvsc_packet *net_vsc_pkt = &vsc_pkt;
device_t dev = device->device;
int count = 0;
int i = 0;
int status = nvsp_status_success;
/*
* All inbound packets other than send completion should be
* xfer page packet.
*/
if (pkt->type != HV_VMBUS_PACKET_TYPE_DATA_USING_TRANSFER_PAGES) {
device_printf(dev, "packet type %d is invalid!\n", pkt->type);
return;
}
nvsp_msg_pkt = (nvsp_msg *)((unsigned long)pkt
+ (pkt->data_offset8 << 3));
/* Make sure this is a valid nvsp packet */
if (nvsp_msg_pkt->hdr.msg_type != nvsp_msg_1_type_send_rndis_pkt) {
device_printf(dev, "packet hdr type %d is invalid!\n",
pkt->type);
return;
}
vm_xfer_page_pkt = (hv_vm_transfer_page_packet_header *)pkt;
if (vm_xfer_page_pkt->transfer_page_set_id !=
NETVSC_RECEIVE_BUFFER_ID) {
device_printf(dev, "transfer_page_set_id %d is invalid!\n",
vm_xfer_page_pkt->transfer_page_set_id);
return;
}
count = vm_xfer_page_pkt->range_count;
net_vsc_pkt->device = device;
/* Each range represents 1 RNDIS pkt that contains 1 Ethernet frame */
for (i = 0; i < count; i++) {
net_vsc_pkt->status = nvsp_status_success;
net_vsc_pkt->data = (void *)((unsigned long)net_dev->rx_buf +
vm_xfer_page_pkt->ranges[i].byte_offset);
net_vsc_pkt->tot_data_buf_len =
vm_xfer_page_pkt->ranges[i].byte_count;
hv_rf_on_receive(net_dev, device, chan, net_vsc_pkt);
if (net_vsc_pkt->status != nvsp_status_success) {
status = nvsp_status_failure;
}
}
/*
* Moved completion call back here so that all received
* messages (not just data messages) will trigger a response
* message back to the host.
*/
hv_nv_on_receive_completion(chan, vm_xfer_page_pkt->d.transaction_id,
status);
}
