I believe this is behind the following: https://bugs.edge.launchpad.net/ubuntu/jaunty/+source/linux/+bug/331128 virtio_pci in 2.6.25 didn't do feature negotiation correctly: it acked every bit. Fortunately, we can detect this. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6975 c046a42c-6fe2-441c-8c8c-71466251a162
624 lines
17 KiB
C
624 lines
17 KiB
C
/*
|
|
* Virtio Network Device
|
|
*
|
|
* Copyright IBM, Corp. 2007
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#include "virtio.h"
|
|
#include "net.h"
|
|
#include "qemu-timer.h"
|
|
#include "virtio-net.h"
|
|
|
|
#define VIRTIO_NET_VM_VERSION 6
|
|
|
|
#define MAC_TABLE_ENTRIES 32
|
|
#define MAX_VLAN (1 << 12) /* Per 802.1Q definition */
|
|
|
|
typedef struct VirtIONet
|
|
{
|
|
VirtIODevice vdev;
|
|
uint8_t mac[ETH_ALEN];
|
|
uint16_t status;
|
|
VirtQueue *rx_vq;
|
|
VirtQueue *tx_vq;
|
|
VirtQueue *ctrl_vq;
|
|
VLANClientState *vc;
|
|
QEMUTimer *tx_timer;
|
|
int tx_timer_active;
|
|
int mergeable_rx_bufs;
|
|
int promisc;
|
|
int allmulti;
|
|
struct {
|
|
int in_use;
|
|
uint8_t *macs;
|
|
} mac_table;
|
|
uint32_t *vlans;
|
|
} VirtIONet;
|
|
|
|
/* TODO
|
|
* - we could suppress RX interrupt if we were so inclined.
|
|
*/
|
|
|
|
static VirtIONet *to_virtio_net(VirtIODevice *vdev)
|
|
{
|
|
return (VirtIONet *)vdev;
|
|
}
|
|
|
|
static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
|
|
{
|
|
VirtIONet *n = to_virtio_net(vdev);
|
|
struct virtio_net_config netcfg;
|
|
|
|
netcfg.status = n->status;
|
|
memcpy(netcfg.mac, n->mac, ETH_ALEN);
|
|
memcpy(config, &netcfg, sizeof(netcfg));
|
|
}
|
|
|
|
static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config)
|
|
{
|
|
VirtIONet *n = to_virtio_net(vdev);
|
|
struct virtio_net_config netcfg;
|
|
|
|
memcpy(&netcfg, config, sizeof(netcfg));
|
|
|
|
if (memcmp(netcfg.mac, n->mac, ETH_ALEN)) {
|
|
memcpy(n->mac, netcfg.mac, ETH_ALEN);
|
|
qemu_format_nic_info_str(n->vc, n->mac);
|
|
}
|
|
}
|
|
|
|
static void virtio_net_set_link_status(VLANClientState *vc)
|
|
{
|
|
VirtIONet *n = vc->opaque;
|
|
uint16_t old_status = n->status;
|
|
|
|
if (vc->link_down)
|
|
n->status &= ~VIRTIO_NET_S_LINK_UP;
|
|
else
|
|
n->status |= VIRTIO_NET_S_LINK_UP;
|
|
|
|
if (n->status != old_status)
|
|
virtio_notify_config(&n->vdev);
|
|
}
|
|
|
|
static void virtio_net_reset(VirtIODevice *vdev)
|
|
{
|
|
VirtIONet *n = to_virtio_net(vdev);
|
|
|
|
/* Reset back to compatibility mode */
|
|
n->promisc = 1;
|
|
n->allmulti = 0;
|
|
|
|
/* Flush any MAC and VLAN filter table state */
|
|
n->mac_table.in_use = 0;
|
|
memset(n->mac_table.macs, 0, MAC_TABLE_ENTRIES * ETH_ALEN);
|
|
memset(n->vlans, 0, MAX_VLAN >> 3);
|
|
}
|
|
|
|
static uint32_t virtio_net_get_features(VirtIODevice *vdev)
|
|
{
|
|
uint32_t features = (1 << VIRTIO_NET_F_MAC) |
|
|
(1 << VIRTIO_NET_F_STATUS) |
|
|
(1 << VIRTIO_NET_F_CTRL_VQ) |
|
|
(1 << VIRTIO_NET_F_CTRL_RX) |
|
|
(1 << VIRTIO_NET_F_CTRL_VLAN);
|
|
|
|
return features;
|
|
}
|
|
|
|
static uint32_t virtio_net_bad_features(VirtIODevice *vdev)
|
|
{
|
|
uint32_t features = 0;
|
|
|
|
/* Linux kernel 2.6.25. It understood MAC (as everyone must),
|
|
* but also these: */
|
|
features |= (1 << VIRTIO_NET_F_MAC);
|
|
features |= (1 << VIRTIO_NET_F_GUEST_CSUM);
|
|
features |= (1 << VIRTIO_NET_F_GUEST_TSO4);
|
|
features |= (1 << VIRTIO_NET_F_GUEST_TSO6);
|
|
features |= (1 << VIRTIO_NET_F_GUEST_ECN);
|
|
|
|
return features & virtio_net_get_features(vdev);
|
|
}
|
|
|
|
static void virtio_net_set_features(VirtIODevice *vdev, uint32_t features)
|
|
{
|
|
VirtIONet *n = to_virtio_net(vdev);
|
|
|
|
n->mergeable_rx_bufs = !!(features & (1 << VIRTIO_NET_F_MRG_RXBUF));
|
|
}
|
|
|
|
static int virtio_net_handle_rx_mode(VirtIONet *n, uint8_t cmd,
|
|
VirtQueueElement *elem)
|
|
{
|
|
uint8_t on;
|
|
|
|
if (elem->out_num != 2 || elem->out_sg[1].iov_len != sizeof(on)) {
|
|
fprintf(stderr, "virtio-net ctrl invalid rx mode command\n");
|
|
exit(1);
|
|
}
|
|
|
|
on = ldub_p(elem->out_sg[1].iov_base);
|
|
|
|
if (cmd == VIRTIO_NET_CTRL_RX_MODE_PROMISC)
|
|
n->promisc = on;
|
|
else if (cmd == VIRTIO_NET_CTRL_RX_MODE_ALLMULTI)
|
|
n->allmulti = on;
|
|
else
|
|
return VIRTIO_NET_ERR;
|
|
|
|
return VIRTIO_NET_OK;
|
|
}
|
|
|
|
static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd,
|
|
VirtQueueElement *elem)
|
|
{
|
|
struct virtio_net_ctrl_mac mac_data;
|
|
|
|
if (cmd != VIRTIO_NET_CTRL_MAC_TABLE_SET || elem->out_num != 3 ||
|
|
elem->out_sg[1].iov_len < sizeof(mac_data) ||
|
|
elem->out_sg[2].iov_len < sizeof(mac_data))
|
|
return VIRTIO_NET_ERR;
|
|
|
|
n->mac_table.in_use = 0;
|
|
memset(n->mac_table.macs, 0, MAC_TABLE_ENTRIES * ETH_ALEN);
|
|
|
|
mac_data.entries = ldl_le_p(elem->out_sg[1].iov_base);
|
|
|
|
if (sizeof(mac_data.entries) +
|
|
(mac_data.entries * ETH_ALEN) > elem->out_sg[1].iov_len)
|
|
return VIRTIO_NET_ERR;
|
|
|
|
if (mac_data.entries <= MAC_TABLE_ENTRIES) {
|
|
memcpy(n->mac_table.macs, elem->out_sg[1].iov_base + sizeof(mac_data),
|
|
mac_data.entries * ETH_ALEN);
|
|
n->mac_table.in_use += mac_data.entries;
|
|
} else {
|
|
n->promisc = 1;
|
|
return VIRTIO_NET_OK;
|
|
}
|
|
|
|
mac_data.entries = ldl_le_p(elem->out_sg[2].iov_base);
|
|
|
|
if (sizeof(mac_data.entries) +
|
|
(mac_data.entries * ETH_ALEN) > elem->out_sg[2].iov_len)
|
|
return VIRTIO_NET_ERR;
|
|
|
|
if (mac_data.entries) {
|
|
if (n->mac_table.in_use + mac_data.entries <= MAC_TABLE_ENTRIES) {
|
|
memcpy(n->mac_table.macs + (n->mac_table.in_use * ETH_ALEN),
|
|
elem->out_sg[2].iov_base + sizeof(mac_data),
|
|
mac_data.entries * ETH_ALEN);
|
|
n->mac_table.in_use += mac_data.entries;
|
|
} else
|
|
n->allmulti = 1;
|
|
}
|
|
|
|
return VIRTIO_NET_OK;
|
|
}
|
|
|
|
static int virtio_net_handle_vlan_table(VirtIONet *n, uint8_t cmd,
|
|
VirtQueueElement *elem)
|
|
{
|
|
uint16_t vid;
|
|
|
|
if (elem->out_num != 2 || elem->out_sg[1].iov_len != sizeof(vid)) {
|
|
fprintf(stderr, "virtio-net ctrl invalid vlan command\n");
|
|
return VIRTIO_NET_ERR;
|
|
}
|
|
|
|
vid = lduw_le_p(elem->out_sg[1].iov_base);
|
|
|
|
if (vid >= MAX_VLAN)
|
|
return VIRTIO_NET_ERR;
|
|
|
|
if (cmd == VIRTIO_NET_CTRL_VLAN_ADD)
|
|
n->vlans[vid >> 5] |= (1U << (vid & 0x1f));
|
|
else if (cmd == VIRTIO_NET_CTRL_VLAN_DEL)
|
|
n->vlans[vid >> 5] &= ~(1U << (vid & 0x1f));
|
|
else
|
|
return VIRTIO_NET_ERR;
|
|
|
|
return VIRTIO_NET_OK;
|
|
}
|
|
|
|
static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
|
|
{
|
|
VirtIONet *n = to_virtio_net(vdev);
|
|
struct virtio_net_ctrl_hdr ctrl;
|
|
virtio_net_ctrl_ack status = VIRTIO_NET_ERR;
|
|
VirtQueueElement elem;
|
|
|
|
while (virtqueue_pop(vq, &elem)) {
|
|
if ((elem.in_num < 1) || (elem.out_num < 1)) {
|
|
fprintf(stderr, "virtio-net ctrl missing headers\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (elem.out_sg[0].iov_len < sizeof(ctrl) ||
|
|
elem.in_sg[elem.in_num - 1].iov_len < sizeof(status)) {
|
|
fprintf(stderr, "virtio-net ctrl header not in correct element\n");
|
|
exit(1);
|
|
}
|
|
|
|
ctrl.class = ldub_p(elem.out_sg[0].iov_base);
|
|
ctrl.cmd = ldub_p(elem.out_sg[0].iov_base + sizeof(ctrl.class));
|
|
|
|
if (ctrl.class == VIRTIO_NET_CTRL_RX_MODE)
|
|
status = virtio_net_handle_rx_mode(n, ctrl.cmd, &elem);
|
|
else if (ctrl.class == VIRTIO_NET_CTRL_MAC)
|
|
status = virtio_net_handle_mac(n, ctrl.cmd, &elem);
|
|
else if (ctrl.class == VIRTIO_NET_CTRL_VLAN)
|
|
status = virtio_net_handle_vlan_table(n, ctrl.cmd, &elem);
|
|
|
|
stb_p(elem.in_sg[elem.in_num - 1].iov_base, status);
|
|
|
|
virtqueue_push(vq, &elem, sizeof(status));
|
|
virtio_notify(vdev, vq);
|
|
}
|
|
}
|
|
|
|
/* RX */
|
|
|
|
static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq)
|
|
{
|
|
}
|
|
|
|
static int do_virtio_net_can_receive(VirtIONet *n, int bufsize)
|
|
{
|
|
if (!virtio_queue_ready(n->rx_vq) ||
|
|
!(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK))
|
|
return 0;
|
|
|
|
if (virtio_queue_empty(n->rx_vq) ||
|
|
(n->mergeable_rx_bufs &&
|
|
!virtqueue_avail_bytes(n->rx_vq, bufsize, 0))) {
|
|
virtio_queue_set_notification(n->rx_vq, 1);
|
|
return 0;
|
|
}
|
|
|
|
virtio_queue_set_notification(n->rx_vq, 0);
|
|
return 1;
|
|
}
|
|
|
|
static int virtio_net_can_receive(void *opaque)
|
|
{
|
|
VirtIONet *n = opaque;
|
|
|
|
return do_virtio_net_can_receive(n, VIRTIO_NET_MAX_BUFSIZE);
|
|
}
|
|
|
|
static int iov_fill(struct iovec *iov, int iovcnt, const void *buf, int count)
|
|
{
|
|
int offset, i;
|
|
|
|
offset = i = 0;
|
|
while (offset < count && i < iovcnt) {
|
|
int len = MIN(iov[i].iov_len, count - offset);
|
|
memcpy(iov[i].iov_base, buf + offset, len);
|
|
offset += len;
|
|
i++;
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int receive_header(VirtIONet *n, struct iovec *iov, int iovcnt,
|
|
const void *buf, size_t size, size_t hdr_len)
|
|
{
|
|
struct virtio_net_hdr *hdr = iov[0].iov_base;
|
|
int offset = 0;
|
|
|
|
hdr->flags = 0;
|
|
hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE;
|
|
|
|
/* We only ever receive a struct virtio_net_hdr from the tapfd,
|
|
* but we may be passing along a larger header to the guest.
|
|
*/
|
|
iov[0].iov_base += hdr_len;
|
|
iov[0].iov_len -= hdr_len;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int receive_filter(VirtIONet *n, const uint8_t *buf, int size)
|
|
{
|
|
static const uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
|
|
static const uint8_t vlan[] = {0x81, 0x00};
|
|
uint8_t *ptr = (uint8_t *)buf;
|
|
int i;
|
|
|
|
if (n->promisc)
|
|
return 1;
|
|
|
|
#ifdef TAP_VNET_HDR
|
|
if (tap_has_vnet_hdr(n->vc->vlan->first_client))
|
|
ptr += sizeof(struct virtio_net_hdr);
|
|
#endif
|
|
|
|
if (!memcmp(&ptr[12], vlan, sizeof(vlan))) {
|
|
int vid = be16_to_cpup((uint16_t *)(ptr + 14)) & 0xfff;
|
|
if (!(n->vlans[vid >> 5] & (1U << (vid & 0x1f))))
|
|
return 0;
|
|
}
|
|
|
|
if ((ptr[0] & 1) && n->allmulti)
|
|
return 1;
|
|
|
|
if (!memcmp(ptr, bcast, sizeof(bcast)))
|
|
return 1;
|
|
|
|
if (!memcmp(ptr, n->mac, ETH_ALEN))
|
|
return 1;
|
|
|
|
for (i = 0; i < n->mac_table.in_use; i++) {
|
|
if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void virtio_net_receive(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
VirtIONet *n = opaque;
|
|
struct virtio_net_hdr_mrg_rxbuf *mhdr = NULL;
|
|
size_t hdr_len, offset, i;
|
|
|
|
if (!do_virtio_net_can_receive(n, size))
|
|
return;
|
|
|
|
if (!receive_filter(n, buf, size))
|
|
return;
|
|
|
|
/* hdr_len refers to the header we supply to the guest */
|
|
hdr_len = n->mergeable_rx_bufs ?
|
|
sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr);
|
|
|
|
offset = i = 0;
|
|
|
|
while (offset < size) {
|
|
VirtQueueElement elem;
|
|
int len, total;
|
|
struct iovec sg[VIRTQUEUE_MAX_SIZE];
|
|
|
|
len = total = 0;
|
|
|
|
if ((i != 0 && !n->mergeable_rx_bufs) ||
|
|
virtqueue_pop(n->rx_vq, &elem) == 0) {
|
|
if (i == 0)
|
|
return;
|
|
fprintf(stderr, "virtio-net truncating packet\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (elem.in_num < 1) {
|
|
fprintf(stderr, "virtio-net receive queue contains no in buffers\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (!n->mergeable_rx_bufs && elem.in_sg[0].iov_len != hdr_len) {
|
|
fprintf(stderr, "virtio-net header not in first element\n");
|
|
exit(1);
|
|
}
|
|
|
|
memcpy(&sg, &elem.in_sg[0], sizeof(sg[0]) * elem.in_num);
|
|
|
|
if (i == 0) {
|
|
if (n->mergeable_rx_bufs)
|
|
mhdr = (struct virtio_net_hdr_mrg_rxbuf *)sg[0].iov_base;
|
|
|
|
offset += receive_header(n, sg, elem.in_num,
|
|
buf + offset, size - offset, hdr_len);
|
|
total += hdr_len;
|
|
}
|
|
|
|
/* copy in packet. ugh */
|
|
len = iov_fill(sg, elem.in_num,
|
|
buf + offset, size - offset);
|
|
total += len;
|
|
|
|
/* signal other side */
|
|
virtqueue_fill(n->rx_vq, &elem, total, i++);
|
|
|
|
offset += len;
|
|
}
|
|
|
|
if (mhdr)
|
|
mhdr->num_buffers = i;
|
|
|
|
virtqueue_flush(n->rx_vq, i);
|
|
virtio_notify(&n->vdev, n->rx_vq);
|
|
}
|
|
|
|
/* TX */
|
|
static void virtio_net_flush_tx(VirtIONet *n, VirtQueue *vq)
|
|
{
|
|
VirtQueueElement elem;
|
|
int has_vnet_hdr = 0;
|
|
|
|
if (!(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK))
|
|
return;
|
|
|
|
while (virtqueue_pop(vq, &elem)) {
|
|
ssize_t len = 0;
|
|
unsigned int out_num = elem.out_num;
|
|
struct iovec *out_sg = &elem.out_sg[0];
|
|
unsigned hdr_len;
|
|
|
|
/* hdr_len refers to the header received from the guest */
|
|
hdr_len = n->mergeable_rx_bufs ?
|
|
sizeof(struct virtio_net_hdr_mrg_rxbuf) :
|
|
sizeof(struct virtio_net_hdr);
|
|
|
|
if (out_num < 1 || out_sg->iov_len != hdr_len) {
|
|
fprintf(stderr, "virtio-net header not in first element\n");
|
|
exit(1);
|
|
}
|
|
|
|
/* ignore the header if GSO is not supported */
|
|
if (!has_vnet_hdr) {
|
|
out_num--;
|
|
out_sg++;
|
|
len += hdr_len;
|
|
} else if (n->mergeable_rx_bufs) {
|
|
/* tapfd expects a struct virtio_net_hdr */
|
|
hdr_len -= sizeof(struct virtio_net_hdr);
|
|
out_sg->iov_len -= hdr_len;
|
|
len += hdr_len;
|
|
}
|
|
|
|
len += qemu_sendv_packet(n->vc, out_sg, out_num);
|
|
|
|
virtqueue_push(vq, &elem, len);
|
|
virtio_notify(&n->vdev, vq);
|
|
}
|
|
}
|
|
|
|
static void virtio_net_handle_tx(VirtIODevice *vdev, VirtQueue *vq)
|
|
{
|
|
VirtIONet *n = to_virtio_net(vdev);
|
|
|
|
if (n->tx_timer_active) {
|
|
virtio_queue_set_notification(vq, 1);
|
|
qemu_del_timer(n->tx_timer);
|
|
n->tx_timer_active = 0;
|
|
virtio_net_flush_tx(n, vq);
|
|
} else {
|
|
qemu_mod_timer(n->tx_timer,
|
|
qemu_get_clock(vm_clock) + TX_TIMER_INTERVAL);
|
|
n->tx_timer_active = 1;
|
|
virtio_queue_set_notification(vq, 0);
|
|
}
|
|
}
|
|
|
|
static void virtio_net_tx_timer(void *opaque)
|
|
{
|
|
VirtIONet *n = opaque;
|
|
|
|
n->tx_timer_active = 0;
|
|
|
|
/* Just in case the driver is not ready on more */
|
|
if (!(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK))
|
|
return;
|
|
|
|
virtio_queue_set_notification(n->tx_vq, 1);
|
|
virtio_net_flush_tx(n, n->tx_vq);
|
|
}
|
|
|
|
static void virtio_net_save(QEMUFile *f, void *opaque)
|
|
{
|
|
VirtIONet *n = opaque;
|
|
|
|
virtio_save(&n->vdev, f);
|
|
|
|
qemu_put_buffer(f, n->mac, ETH_ALEN);
|
|
qemu_put_be32(f, n->tx_timer_active);
|
|
qemu_put_be32(f, n->mergeable_rx_bufs);
|
|
qemu_put_be16(f, n->status);
|
|
qemu_put_be32(f, n->promisc);
|
|
qemu_put_be32(f, n->allmulti);
|
|
qemu_put_be32(f, n->mac_table.in_use);
|
|
qemu_put_buffer(f, n->mac_table.macs, n->mac_table.in_use * ETH_ALEN);
|
|
qemu_put_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
|
|
}
|
|
|
|
static int virtio_net_load(QEMUFile *f, void *opaque, int version_id)
|
|
{
|
|
VirtIONet *n = opaque;
|
|
|
|
if (version_id < 2 || version_id > VIRTIO_NET_VM_VERSION)
|
|
return -EINVAL;
|
|
|
|
virtio_load(&n->vdev, f);
|
|
|
|
qemu_get_buffer(f, n->mac, ETH_ALEN);
|
|
n->tx_timer_active = qemu_get_be32(f);
|
|
n->mergeable_rx_bufs = qemu_get_be32(f);
|
|
|
|
if (version_id >= 3)
|
|
n->status = qemu_get_be16(f);
|
|
|
|
if (version_id >= 4) {
|
|
n->promisc = qemu_get_be32(f);
|
|
n->allmulti = qemu_get_be32(f);
|
|
}
|
|
|
|
if (version_id >= 5) {
|
|
n->mac_table.in_use = qemu_get_be32(f);
|
|
/* MAC_TABLE_ENTRIES may be different from the saved image */
|
|
if (n->mac_table.in_use <= MAC_TABLE_ENTRIES) {
|
|
qemu_get_buffer(f, n->mac_table.macs,
|
|
n->mac_table.in_use * ETH_ALEN);
|
|
} else if (n->mac_table.in_use) {
|
|
qemu_fseek(f, n->mac_table.in_use * ETH_ALEN, SEEK_CUR);
|
|
n->promisc = 1;
|
|
n->mac_table.in_use = 0;
|
|
}
|
|
}
|
|
|
|
if (version_id >= 6)
|
|
qemu_get_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
|
|
|
|
if (n->tx_timer_active) {
|
|
qemu_mod_timer(n->tx_timer,
|
|
qemu_get_clock(vm_clock) + TX_TIMER_INTERVAL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
PCIDevice *virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
|
|
{
|
|
VirtIONet *n;
|
|
static int virtio_net_id;
|
|
|
|
n = (VirtIONet *)virtio_init_pci(bus, "virtio-net",
|
|
PCI_VENDOR_ID_REDHAT_QUMRANET,
|
|
PCI_DEVICE_ID_VIRTIO_NET,
|
|
PCI_VENDOR_ID_REDHAT_QUMRANET,
|
|
VIRTIO_ID_NET,
|
|
PCI_CLASS_NETWORK_ETHERNET, 0x00,
|
|
sizeof(struct virtio_net_config),
|
|
sizeof(VirtIONet));
|
|
if (!n)
|
|
return NULL;
|
|
|
|
n->vdev.get_config = virtio_net_get_config;
|
|
n->vdev.set_config = virtio_net_set_config;
|
|
n->vdev.get_features = virtio_net_get_features;
|
|
n->vdev.set_features = virtio_net_set_features;
|
|
n->vdev.bad_features = virtio_net_bad_features;
|
|
n->vdev.reset = virtio_net_reset;
|
|
n->rx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_rx);
|
|
n->tx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_tx);
|
|
n->ctrl_vq = virtio_add_queue(&n->vdev, 16, virtio_net_handle_ctrl);
|
|
memcpy(n->mac, nd->macaddr, ETH_ALEN);
|
|
n->status = VIRTIO_NET_S_LINK_UP;
|
|
n->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name,
|
|
virtio_net_receive, virtio_net_can_receive, n);
|
|
n->vc->link_status_changed = virtio_net_set_link_status;
|
|
|
|
qemu_format_nic_info_str(n->vc, n->mac);
|
|
|
|
n->tx_timer = qemu_new_timer(vm_clock, virtio_net_tx_timer, n);
|
|
n->tx_timer_active = 0;
|
|
n->mergeable_rx_bufs = 0;
|
|
n->promisc = 1; /* for compatibility */
|
|
|
|
n->mac_table.macs = qemu_mallocz(MAC_TABLE_ENTRIES * ETH_ALEN);
|
|
|
|
n->vlans = qemu_mallocz(MAX_VLAN >> 3);
|
|
|
|
register_savevm("virtio-net", virtio_net_id++, VIRTIO_NET_VM_VERSION,
|
|
virtio_net_save, virtio_net_load, n);
|
|
return (PCIDevice *)n;
|
|
}
|