/*
* Send NDIS version 2 config packet containing MTU.
*
* Not valid for NDIS version 1.
*/
static int
hv_nv_send_ndis_config(struct hv_device *device, uint32_t mtu)
{
netvsc_dev *net_dev;
nvsp_msg *init_pkt;
int ret;
net_dev = hv_nv_get_outbound_net_device(device);
if (!net_dev)
return (-ENODEV);
/*
* Set up configuration packet, write MTU
* Indicate we are capable of handling VLAN tags
*/
init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));
init_pkt->hdr.msg_type = nvsp_msg_2_type_send_ndis_config;
init_pkt->msgs.vers_2_msgs.send_ndis_config.mtu = mtu;
init_pkt->
msgs.vers_2_msgs.send_ndis_config.capabilities.u1.u2.ieee8021q
= 1;
/* Send the configuration packet */
ret = hv_vmbus_channel_send_packet(device->channel, init_pkt,
sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt,
HV_VMBUS_PACKET_TYPE_DATA_IN_BAND, 0);
if (ret != 0)
return (-EINVAL);
return (0);
}
/*
* Net VSC connect to VSP
*/
static int
hv_nv_connect_to_vsp(struct hv_device *device)
{
netvsc_dev *net_dev;
nvsp_msg *init_pkt;
uint32_t ndis_version;
uint32_t protocol_list[] = { NVSP_PROTOCOL_VERSION_1,
NVSP_PROTOCOL_VERSION_2,
NVSP_PROTOCOL_VERSION_4,
NVSP_PROTOCOL_VERSION_5 };
int i;
int protocol_number = nitems(protocol_list);
int ret = 0;
device_t dev = device->device;
hn_softc_t *sc = device_get_softc(dev);
struct ifnet *ifp = sc->hn_ifp;
net_dev = hv_nv_get_outbound_net_device(device);
if (!net_dev) {
return (ENODEV);
}
/*
* Negotiate the NVSP version. Try the latest NVSP first.
*/
for (i = protocol_number - 1; i >= 0; i--) {
if (hv_nv_negotiate_nvsp_protocol(device, net_dev,
protocol_list[i]) == 0) {
net_dev->nvsp_version = protocol_list[i];
if (bootverbose)
device_printf(dev, "Netvsc: got version 0x%x\n",
net_dev->nvsp_version);
break;
}
}
if (i < 0) {
if (bootverbose)
device_printf(dev, "failed to negotiate a valid "
"protocol.\n");
return (EPROTO);
}
/*
* Set the MTU if supported by this NVSP protocol version
* This needs to be right after the NVSP init message per Haiyang
*/
if (net_dev->nvsp_version >= NVSP_PROTOCOL_VERSION_2)
ret = hv_nv_send_ndis_config(device, ifp->if_mtu);
/*
* Send the NDIS version
*/
init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));
if (net_dev->nvsp_version <= NVSP_PROTOCOL_VERSION_4) {
ndis_version = NDIS_VERSION_6_1;
} else {
ndis_version = NDIS_VERSION_6_30;
}
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_ndis_vers;
init_pkt->msgs.vers_1_msgs.send_ndis_vers.ndis_major_vers =
(ndis_version & 0xFFFF0000) >> 16;
init_pkt->msgs.vers_1_msgs.send_ndis_vers.ndis_minor_vers =
ndis_version & 0xFFFF;
/* Send the init request */
ret = hv_vmbus_channel_send_packet(device->channel, init_pkt,
sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt,
HV_VMBUS_PACKET_TYPE_DATA_IN_BAND, 0);
if (ret != 0) {
goto cleanup;
}
/*
* TODO: BUGBUG - We have to wait for the above msg since the netvsp
* uses KMCL which acknowledges packet (completion packet)
* since our Vmbus always set the
* HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED flag
*/
/* sema_wait(&NetVscChannel->channel_init_sema); */
/* Post the big receive buffer to NetVSP */
if (net_dev->nvsp_version <= NVSP_PROTOCOL_VERSION_2)
net_dev->rx_buf_size = NETVSC_RECEIVE_BUFFER_SIZE_LEGACY;
else
net_dev->rx_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
net_dev->send_buf_size = NETVSC_SEND_BUFFER_SIZE;
ret = hv_nv_init_rx_buffer_with_net_vsp(device);
if (ret == 0)
ret = hv_nv_init_send_buffer_with_net_vsp(device);
cleanup:
return (ret);
}
/*
* Net VSC initialize send buffer with net VSP
*/
static int
hv_nv_init_send_buffer_with_net_vsp(struct hv_device *device)
{
netvsc_dev *net_dev;
nvsp_msg *init_pkt;
int ret = 0;
net_dev = hv_nv_get_outbound_net_device(device);
if (!net_dev) {
return (ENODEV);
}
net_dev->send_buf = contigmalloc(net_dev->send_buf_size, M_NETVSC,
M_ZERO, 0UL, BUS_SPACE_MAXADDR, PAGE_SIZE, 0);
if (net_dev->send_buf == NULL) {
ret = ENOMEM;
goto cleanup;
}
/*
* Establish the gpadl handle for this buffer on this channel.
* Note: This call uses the vmbus connection rather than the
* channel to establish the gpadl handle.
*/
ret = hv_vmbus_channel_establish_gpadl(device->channel,
net_dev->send_buf, net_dev->send_buf_size,
&net_dev->send_buf_gpadl_handle);
if (ret != 0) {
goto cleanup;
}
/* Notify the NetVsp of the gpadl handle */
init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_send_buf;
init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =
net_dev->send_buf_gpadl_handle;
init_pkt->msgs.vers_1_msgs.send_rx_buf.id =
NETVSC_SEND_BUFFER_ID;
/* Send the gpadl notification request */
ret = hv_vmbus_channel_send_packet(device->channel, init_pkt,
sizeof(nvsp_msg), (uint64_t)init_pkt,
HV_VMBUS_PACKET_TYPE_DATA_IN_BAND,
HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret != 0) {
goto cleanup;
}
sema_wait(&net_dev->channel_init_sema);
/* Check the response */
if (init_pkt->msgs.vers_1_msgs.send_send_buf_complete.status
!= nvsp_status_success) {
ret = EINVAL;
goto cleanup;
}
net_dev->send_section_size =
init_pkt->msgs.vers_1_msgs.send_send_buf_complete.section_size;
net_dev->send_section_count =
net_dev->send_buf_size / net_dev->send_section_size;
net_dev->bitsmap_words = howmany(net_dev->send_section_count,
BITS_PER_LONG);
net_dev->send_section_bitsmap =
malloc(net_dev->bitsmap_words * sizeof(long), M_NETVSC,
M_WAITOK | M_ZERO);
goto exit;
cleanup:
hv_nv_destroy_send_buffer(net_dev);
exit:
return (ret);
}
/*
* Net VSC initialize receive buffer with net VSP
*
* Net VSP: Network virtual services client, also known as the
* Hyper-V extensible switch and the synthetic data path.
*/
static int
hv_nv_init_rx_buffer_with_net_vsp(struct hv_device *device)
{
netvsc_dev *net_dev;
nvsp_msg *init_pkt;
int ret = 0;
net_dev = hv_nv_get_outbound_net_device(device);
if (!net_dev) {
return (ENODEV);
}
net_dev->rx_buf = contigmalloc(net_dev->rx_buf_size, M_NETVSC,
M_ZERO, 0UL, BUS_SPACE_MAXADDR, PAGE_SIZE, 0);
/*
* Establish the GPADL handle for this buffer on this channel.
* Note: This call uses the vmbus connection rather than the
* channel to establish the gpadl handle.
* GPADL: Guest physical address descriptor list.
*/
ret = hv_vmbus_channel_establish_gpadl(
device->channel, net_dev->rx_buf,
net_dev->rx_buf_size, &net_dev->rx_buf_gpadl_handle);
if (ret != 0) {
goto cleanup;
}
/* sema_wait(&ext->channel_init_sema); KYS CHECK */
/* Notify the NetVsp of the gpadl handle */
init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_rx_buf;
init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =
net_dev->rx_buf_gpadl_handle;
init_pkt->msgs.vers_1_msgs.send_rx_buf.id =
NETVSC_RECEIVE_BUFFER_ID;
/* Send the gpadl notification request */
ret = hv_vmbus_channel_send_packet(device->channel, init_pkt,
sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt,
HV_VMBUS_PACKET_TYPE_DATA_IN_BAND,
HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
if (ret != 0) {
goto cleanup;
}
sema_wait(&net_dev->channel_init_sema);
/* Check the response */
if (init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.status
!= nvsp_status_success) {
ret = EINVAL;
goto cleanup;
}
net_dev->rx_section_count =
init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.num_sections;
net_dev->rx_sections = malloc(net_dev->rx_section_count *
sizeof(nvsp_1_rx_buf_section), M_NETVSC, M_WAITOK);
memcpy(net_dev->rx_sections,
init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.sections,
net_dev->rx_section_count * sizeof(nvsp_1_rx_buf_section));
/*
* For first release, there should only be 1 section that represents
* the entire receive buffer
*/
if (net_dev->rx_section_count != 1
|| net_dev->rx_sections->offset != 0) {
ret = EINVAL;
goto cleanup;
}
goto exit;
cleanup:
hv_nv_destroy_rx_buffer(net_dev);
exit:
return (ret);
}
/*
* Net VSC initialize send buffer with net VSP
*/
static int
hv_nv_init_send_buffer_with_net_vsp(struct hn_softc *sc)
{
netvsc_dev *net_dev;
nvsp_msg *init_pkt;
int ret = 0;
net_dev = hv_nv_get_outbound_net_device(sc);
if (!net_dev) {
return (ENODEV);
}
net_dev->send_buf = hyperv_dmamem_alloc(bus_get_dma_tag(sc->hn_dev),
PAGE_SIZE, 0, net_dev->send_buf_size, &net_dev->txbuf_dma,
BUS_DMA_WAITOK | BUS_DMA_ZERO);
if (net_dev->send_buf == NULL) {
device_printf(sc->hn_dev, "allocate chimney txbuf failed\n");
return ENOMEM;
}
/*
* Connect chimney sending buffer GPADL to the primary channel.
*
* NOTE:
* Only primary channel has chimney sending buffer connected to it.
* Sub-channels just share this chimney sending buffer.
*/
ret = vmbus_chan_gpadl_connect(sc->hn_prichan,
net_dev->txbuf_dma.hv_paddr, net_dev->send_buf_size,
&net_dev->send_buf_gpadl_handle);
if (ret != 0) {
device_printf(sc->hn_dev, "chimney sending buffer gpadl "
"connect failed: %d\n", ret);
goto cleanup;
}
/* Notify the NetVsp of the gpadl handle */
init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_send_buf;
init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =
net_dev->send_buf_gpadl_handle;
init_pkt->msgs.vers_1_msgs.send_rx_buf.id =
NETVSC_SEND_BUFFER_ID;
/* Send the gpadl notification request */
ret = vmbus_chan_send(sc->hn_prichan,
VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,
init_pkt, sizeof(nvsp_msg), (uint64_t)init_pkt);
if (ret != 0) {
goto cleanup;
}
sema_wait(&net_dev->channel_init_sema);
/* Check the response */
if (init_pkt->msgs.vers_1_msgs.send_send_buf_complete.status
!= nvsp_status_success) {
ret = EINVAL;
goto cleanup;
}
net_dev->send_section_size =
init_pkt->msgs.vers_1_msgs.send_send_buf_complete.section_size;
net_dev->send_section_count =
net_dev->send_buf_size / net_dev->send_section_size;
net_dev->bitsmap_words = howmany(net_dev->send_section_count,
BITS_PER_LONG);
net_dev->send_section_bitsmap =
malloc(net_dev->bitsmap_words * sizeof(long), M_NETVSC,
M_WAITOK | M_ZERO);
goto exit;
cleanup:
hv_nv_destroy_send_buffer(net_dev);
exit:
return (ret);
}
/*
* Net VSC initialize receive buffer with net VSP
*
* Net VSP: Network virtual services client, also known as the
* Hyper-V extensible switch and the synthetic data path.
*/
static int
hv_nv_init_rx_buffer_with_net_vsp(struct hn_softc *sc)
{
netvsc_dev *net_dev;
nvsp_msg *init_pkt;
int ret = 0;
net_dev = hv_nv_get_outbound_net_device(sc);
if (!net_dev) {
return (ENODEV);
}
net_dev->rx_buf = hyperv_dmamem_alloc(bus_get_dma_tag(sc->hn_dev),
PAGE_SIZE, 0, net_dev->rx_buf_size, &net_dev->rxbuf_dma,
BUS_DMA_WAITOK | BUS_DMA_ZERO);
if (net_dev->rx_buf == NULL) {
device_printf(sc->hn_dev, "allocate rxbuf failed\n");
return ENOMEM;
}
/*
* Connect the RXBUF GPADL to the primary channel.
*
* NOTE:
* Only primary channel has RXBUF connected to it. Sub-channels
* just share this RXBUF.
*/
ret = vmbus_chan_gpadl_connect(sc->hn_prichan,
net_dev->rxbuf_dma.hv_paddr, net_dev->rx_buf_size,
&net_dev->rx_buf_gpadl_handle);
if (ret != 0) {
device_printf(sc->hn_dev, "rxbuf gpadl connect failed: %d\n",
ret);
goto cleanup;
}
/* sema_wait(&ext->channel_init_sema); KYS CHECK */
/* Notify the NetVsp of the gpadl handle */
init_pkt = &net_dev->channel_init_packet;
memset(init_pkt, 0, sizeof(nvsp_msg));
init_pkt->hdr.msg_type = nvsp_msg_1_type_send_rx_buf;
init_pkt->msgs.vers_1_msgs.send_rx_buf.gpadl_handle =
net_dev->rx_buf_gpadl_handle;
init_pkt->msgs.vers_1_msgs.send_rx_buf.id =
NETVSC_RECEIVE_BUFFER_ID;
/* Send the gpadl notification request */
ret = vmbus_chan_send(sc->hn_prichan,
VMBUS_CHANPKT_TYPE_INBAND, VMBUS_CHANPKT_FLAG_RC,
init_pkt, sizeof(nvsp_msg), (uint64_t)(uintptr_t)init_pkt);
if (ret != 0) {
goto cleanup;
}
sema_wait(&net_dev->channel_init_sema);
/* Check the response */
if (init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.status
!= nvsp_status_success) {
ret = EINVAL;
goto cleanup;
}
net_dev->rx_section_count =
init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.num_sections;
net_dev->rx_sections = malloc(net_dev->rx_section_count *
sizeof(nvsp_1_rx_buf_section), M_NETVSC, M_WAITOK);
memcpy(net_dev->rx_sections,
init_pkt->msgs.vers_1_msgs.send_rx_buf_complete.sections,
net_dev->rx_section_count * sizeof(nvsp_1_rx_buf_section));
/*
* For first release, there should only be 1 section that represents
* the entire receive buffer
*/
if (net_dev->rx_section_count != 1
|| net_dev->rx_sections->offset != 0) {
ret = EINVAL;
goto cleanup;
}
goto exit;
cleanup:
hv_nv_destroy_rx_buffer(net_dev);
exit:
return (ret);
}
