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/*
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* Virtio Network Device
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*
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* Copyright IBM, Corp. 2007
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#include "virtio.h" |
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#include "net.h" |
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#include "qemu-timer.h" |
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#include "virtio-net.h" |
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#define VIRTIO_NET_VM_VERSION 6 |
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#define MAC_TABLE_ENTRIES 32 |
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#define MAX_VLAN (1 << 12) /* Per 802.1Q definition */ |
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typedef struct VirtIONet |
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{ |
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VirtIODevice vdev; |
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uint8_t mac[ETH_ALEN]; |
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uint16_t status; |
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VirtQueue *rx_vq; |
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VirtQueue *tx_vq; |
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VirtQueue *ctrl_vq; |
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VLANClientState *vc; |
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QEMUTimer *tx_timer; |
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int tx_timer_active;
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int mergeable_rx_bufs;
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int promisc;
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int allmulti;
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struct {
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int in_use;
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uint8_t *macs; |
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} mac_table; |
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uint32_t *vlans; |
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} VirtIONet; |
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/* TODO
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* - we could suppress RX interrupt if we were so inclined.
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*/
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static VirtIONet *to_virtio_net(VirtIODevice *vdev)
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{ |
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return (VirtIONet *)vdev;
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} |
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static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config) |
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{ |
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VirtIONet *n = to_virtio_net(vdev); |
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struct virtio_net_config netcfg;
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netcfg.status = n->status; |
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memcpy(netcfg.mac, n->mac, ETH_ALEN); |
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memcpy(config, &netcfg, sizeof(netcfg));
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} |
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static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config) |
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{ |
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VirtIONet *n = to_virtio_net(vdev); |
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struct virtio_net_config netcfg;
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memcpy(&netcfg, config, sizeof(netcfg));
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if (memcmp(netcfg.mac, n->mac, ETH_ALEN)) {
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memcpy(n->mac, netcfg.mac, ETH_ALEN); |
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qemu_format_nic_info_str(n->vc, n->mac); |
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} |
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} |
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static void virtio_net_set_link_status(VLANClientState *vc) |
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{ |
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VirtIONet *n = vc->opaque; |
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uint16_t old_status = n->status; |
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if (vc->link_down)
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n->status &= ~VIRTIO_NET_S_LINK_UP; |
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else
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n->status |= VIRTIO_NET_S_LINK_UP; |
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if (n->status != old_status)
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virtio_notify_config(&n->vdev); |
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} |
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static void virtio_net_reset(VirtIODevice *vdev) |
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{ |
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VirtIONet *n = to_virtio_net(vdev); |
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/* Reset back to compatibility mode */
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n->promisc = 1;
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n->allmulti = 0;
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/* Flush any MAC and VLAN filter table state */
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n->mac_table.in_use = 0;
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memset(n->mac_table.macs, 0, MAC_TABLE_ENTRIES * ETH_ALEN);
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memset(n->vlans, 0, MAX_VLAN >> 3); |
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} |
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static uint32_t virtio_net_get_features(VirtIODevice *vdev)
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{ |
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uint32_t features = (1 << VIRTIO_NET_F_MAC) |
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(1 << VIRTIO_NET_F_STATUS) |
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(1 << VIRTIO_NET_F_CTRL_VQ) |
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(1 << VIRTIO_NET_F_CTRL_RX) |
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(1 << VIRTIO_NET_F_CTRL_VLAN);
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return features;
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} |
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static uint32_t virtio_net_bad_features(VirtIODevice *vdev)
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{ |
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uint32_t features = 0;
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/* Linux kernel 2.6.25. It understood MAC (as everyone must),
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* but also these: */
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features |= (1 << VIRTIO_NET_F_MAC);
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features |= (1 << VIRTIO_NET_F_GUEST_CSUM);
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features |= (1 << VIRTIO_NET_F_GUEST_TSO4);
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features |= (1 << VIRTIO_NET_F_GUEST_TSO6);
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features |= (1 << VIRTIO_NET_F_GUEST_ECN);
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return features & virtio_net_get_features(vdev);
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} |
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static void virtio_net_set_features(VirtIODevice *vdev, uint32_t features) |
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{ |
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VirtIONet *n = to_virtio_net(vdev); |
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n->mergeable_rx_bufs = !!(features & (1 << VIRTIO_NET_F_MRG_RXBUF));
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} |
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static int virtio_net_handle_rx_mode(VirtIONet *n, uint8_t cmd, |
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VirtQueueElement *elem) |
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{ |
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uint8_t on; |
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if (elem->out_num != 2 || elem->out_sg[1].iov_len != sizeof(on)) { |
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fprintf(stderr, "virtio-net ctrl invalid rx mode command\n");
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exit(1);
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} |
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on = ldub_p(elem->out_sg[1].iov_base);
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if (cmd == VIRTIO_NET_CTRL_RX_MODE_PROMISC)
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n->promisc = on; |
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else if (cmd == VIRTIO_NET_CTRL_RX_MODE_ALLMULTI) |
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n->allmulti = on; |
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else
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return VIRTIO_NET_ERR;
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return VIRTIO_NET_OK;
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} |
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static int virtio_net_handle_mac(VirtIONet *n, uint8_t cmd, |
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VirtQueueElement *elem) |
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{ |
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struct virtio_net_ctrl_mac mac_data;
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if (cmd != VIRTIO_NET_CTRL_MAC_TABLE_SET || elem->out_num != 3 || |
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elem->out_sg[1].iov_len < sizeof(mac_data) || |
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elem->out_sg[2].iov_len < sizeof(mac_data)) |
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return VIRTIO_NET_ERR;
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n->mac_table.in_use = 0;
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memset(n->mac_table.macs, 0, MAC_TABLE_ENTRIES * ETH_ALEN);
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mac_data.entries = ldl_le_p(elem->out_sg[1].iov_base);
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if (sizeof(mac_data.entries) + |
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(mac_data.entries * ETH_ALEN) > elem->out_sg[1].iov_len)
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return VIRTIO_NET_ERR;
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if (mac_data.entries <= MAC_TABLE_ENTRIES) {
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memcpy(n->mac_table.macs, elem->out_sg[1].iov_base + sizeof(mac_data), |
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mac_data.entries * ETH_ALEN); |
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n->mac_table.in_use += mac_data.entries; |
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} else {
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n->promisc = 1;
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return VIRTIO_NET_OK;
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} |
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mac_data.entries = ldl_le_p(elem->out_sg[2].iov_base);
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if (sizeof(mac_data.entries) + |
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(mac_data.entries * ETH_ALEN) > elem->out_sg[2].iov_len)
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return VIRTIO_NET_ERR;
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if (mac_data.entries) {
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if (n->mac_table.in_use + mac_data.entries <= MAC_TABLE_ENTRIES) {
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memcpy(n->mac_table.macs + (n->mac_table.in_use * ETH_ALEN), |
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elem->out_sg[2].iov_base + sizeof(mac_data), |
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mac_data.entries * ETH_ALEN); |
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n->mac_table.in_use += mac_data.entries; |
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} else
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n->allmulti = 1;
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} |
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return VIRTIO_NET_OK;
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} |
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static int virtio_net_handle_vlan_table(VirtIONet *n, uint8_t cmd, |
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VirtQueueElement *elem) |
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{ |
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uint16_t vid; |
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if (elem->out_num != 2 || elem->out_sg[1].iov_len != sizeof(vid)) { |
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fprintf(stderr, "virtio-net ctrl invalid vlan command\n");
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return VIRTIO_NET_ERR;
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} |
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vid = lduw_le_p(elem->out_sg[1].iov_base);
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if (vid >= MAX_VLAN)
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return VIRTIO_NET_ERR;
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if (cmd == VIRTIO_NET_CTRL_VLAN_ADD)
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n->vlans[vid >> 5] |= (1U << (vid & 0x1f)); |
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else if (cmd == VIRTIO_NET_CTRL_VLAN_DEL) |
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n->vlans[vid >> 5] &= ~(1U << (vid & 0x1f)); |
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else
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return VIRTIO_NET_ERR;
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return VIRTIO_NET_OK;
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} |
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static void virtio_net_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) |
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{ |
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VirtIONet *n = to_virtio_net(vdev); |
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struct virtio_net_ctrl_hdr ctrl;
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virtio_net_ctrl_ack status = VIRTIO_NET_ERR; |
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VirtQueueElement elem; |
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while (virtqueue_pop(vq, &elem)) {
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if ((elem.in_num < 1) || (elem.out_num < 1)) { |
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fprintf(stderr, "virtio-net ctrl missing headers\n");
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exit(1);
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} |
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if (elem.out_sg[0].iov_len < sizeof(ctrl) || |
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elem.in_sg[elem.in_num - 1].iov_len < sizeof(status)) { |
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fprintf(stderr, "virtio-net ctrl header not in correct element\n");
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exit(1);
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} |
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ctrl.class = ldub_p(elem.out_sg[0].iov_base);
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ctrl.cmd = ldub_p(elem.out_sg[0].iov_base + sizeof(ctrl.class)); |
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if (ctrl.class == VIRTIO_NET_CTRL_RX_MODE)
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status = virtio_net_handle_rx_mode(n, ctrl.cmd, &elem); |
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else if (ctrl.class == VIRTIO_NET_CTRL_MAC) |
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status = virtio_net_handle_mac(n, ctrl.cmd, &elem); |
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else if (ctrl.class == VIRTIO_NET_CTRL_VLAN) |
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status = virtio_net_handle_vlan_table(n, ctrl.cmd, &elem); |
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stb_p(elem.in_sg[elem.in_num - 1].iov_base, status);
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virtqueue_push(vq, &elem, sizeof(status));
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virtio_notify(vdev, vq); |
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} |
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} |
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/* RX */
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static void virtio_net_handle_rx(VirtIODevice *vdev, VirtQueue *vq) |
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{ |
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} |
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static int do_virtio_net_can_receive(VirtIONet *n, int bufsize) |
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{ |
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if (!virtio_queue_ready(n->rx_vq) ||
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!(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK)) |
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return 0; |
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if (virtio_queue_empty(n->rx_vq) ||
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(n->mergeable_rx_bufs && |
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!virtqueue_avail_bytes(n->rx_vq, bufsize, 0))) {
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virtio_queue_set_notification(n->rx_vq, 1);
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return 0; |
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} |
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virtio_queue_set_notification(n->rx_vq, 0);
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return 1; |
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} |
290 |
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static int virtio_net_can_receive(void *opaque) |
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{ |
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VirtIONet *n = opaque; |
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return do_virtio_net_can_receive(n, VIRTIO_NET_MAX_BUFSIZE);
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} |
297 |
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static int iov_fill(struct iovec *iov, int iovcnt, const void *buf, int count) |
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{ |
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int offset, i;
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offset = i = 0;
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while (offset < count && i < iovcnt) {
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int len = MIN(iov[i].iov_len, count - offset);
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memcpy(iov[i].iov_base, buf + offset, len); |
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offset += len; |
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i++; |
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} |
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return offset;
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} |
312 |
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static int receive_header(VirtIONet *n, struct iovec *iov, int iovcnt, |
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const void *buf, size_t size, size_t hdr_len) |
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{ |
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struct virtio_net_hdr *hdr = (struct virtio_net_hdr *)iov[0].iov_base; |
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int offset = 0; |
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hdr->flags = 0;
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hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE; |
321 |
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/* We only ever receive a struct virtio_net_hdr from the tapfd,
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* but we may be passing along a larger header to the guest.
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*/
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iov[0].iov_base += hdr_len;
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iov[0].iov_len -= hdr_len;
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return offset;
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} |
330 |
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static int receive_filter(VirtIONet *n, const uint8_t *buf, int size) |
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{ |
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static const uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; |
334 |
static const uint8_t vlan[] = {0x81, 0x00}; |
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uint8_t *ptr = (uint8_t *)buf; |
336 |
int i;
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|
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if (n->promisc)
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return 1; |
340 |
|
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if (!memcmp(&ptr[12], vlan, sizeof(vlan))) { |
342 |
int vid = be16_to_cpup((uint16_t *)(ptr + 14)) & 0xfff; |
343 |
if (!(n->vlans[vid >> 5] & (1U << (vid & 0x1f)))) |
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return 0; |
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} |
346 |
|
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if ((ptr[0] & 1) && n->allmulti) |
348 |
return 1; |
349 |
|
350 |
if (!memcmp(ptr, bcast, sizeof(bcast))) |
351 |
return 1; |
352 |
|
353 |
if (!memcmp(ptr, n->mac, ETH_ALEN))
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return 1; |
355 |
|
356 |
for (i = 0; i < n->mac_table.in_use; i++) { |
357 |
if (!memcmp(ptr, &n->mac_table.macs[i * ETH_ALEN], ETH_ALEN))
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return 1; |
359 |
} |
360 |
|
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return 0; |
362 |
} |
363 |
|
364 |
static void virtio_net_receive(void *opaque, const uint8_t *buf, int size) |
365 |
{ |
366 |
VirtIONet *n = opaque; |
367 |
struct virtio_net_hdr_mrg_rxbuf *mhdr = NULL; |
368 |
size_t hdr_len, offset, i; |
369 |
|
370 |
if (!do_virtio_net_can_receive(n, size))
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371 |
return;
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372 |
|
373 |
if (!receive_filter(n, buf, size))
|
374 |
return;
|
375 |
|
376 |
/* hdr_len refers to the header we supply to the guest */
|
377 |
hdr_len = n->mergeable_rx_bufs ? |
378 |
sizeof(struct virtio_net_hdr_mrg_rxbuf) : sizeof(struct virtio_net_hdr); |
379 |
|
380 |
offset = i = 0;
|
381 |
|
382 |
while (offset < size) {
|
383 |
VirtQueueElement elem; |
384 |
int len, total;
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385 |
struct iovec sg[VIRTQUEUE_MAX_SIZE];
|
386 |
|
387 |
len = total = 0;
|
388 |
|
389 |
if ((i != 0 && !n->mergeable_rx_bufs) || |
390 |
virtqueue_pop(n->rx_vq, &elem) == 0) {
|
391 |
if (i == 0) |
392 |
return;
|
393 |
fprintf(stderr, "virtio-net truncating packet\n");
|
394 |
exit(1);
|
395 |
} |
396 |
|
397 |
if (elem.in_num < 1) { |
398 |
fprintf(stderr, "virtio-net receive queue contains no in buffers\n");
|
399 |
exit(1);
|
400 |
} |
401 |
|
402 |
if (!n->mergeable_rx_bufs && elem.in_sg[0].iov_len != hdr_len) { |
403 |
fprintf(stderr, "virtio-net header not in first element\n");
|
404 |
exit(1);
|
405 |
} |
406 |
|
407 |
memcpy(&sg, &elem.in_sg[0], sizeof(sg[0]) * elem.in_num); |
408 |
|
409 |
if (i == 0) { |
410 |
if (n->mergeable_rx_bufs)
|
411 |
mhdr = (struct virtio_net_hdr_mrg_rxbuf *)sg[0].iov_base; |
412 |
|
413 |
offset += receive_header(n, sg, elem.in_num, |
414 |
buf + offset, size - offset, hdr_len); |
415 |
total += hdr_len; |
416 |
} |
417 |
|
418 |
/* copy in packet. ugh */
|
419 |
len = iov_fill(sg, elem.in_num, |
420 |
buf + offset, size - offset); |
421 |
total += len; |
422 |
|
423 |
/* signal other side */
|
424 |
virtqueue_fill(n->rx_vq, &elem, total, i++); |
425 |
|
426 |
offset += len; |
427 |
} |
428 |
|
429 |
if (mhdr)
|
430 |
mhdr->num_buffers = i; |
431 |
|
432 |
virtqueue_flush(n->rx_vq, i); |
433 |
virtio_notify(&n->vdev, n->rx_vq); |
434 |
} |
435 |
|
436 |
/* TX */
|
437 |
static void virtio_net_flush_tx(VirtIONet *n, VirtQueue *vq) |
438 |
{ |
439 |
VirtQueueElement elem; |
440 |
int has_vnet_hdr = 0; |
441 |
|
442 |
if (!(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK))
|
443 |
return;
|
444 |
|
445 |
while (virtqueue_pop(vq, &elem)) {
|
446 |
ssize_t len = 0;
|
447 |
unsigned int out_num = elem.out_num; |
448 |
struct iovec *out_sg = &elem.out_sg[0]; |
449 |
unsigned hdr_len;
|
450 |
|
451 |
/* hdr_len refers to the header received from the guest */
|
452 |
hdr_len = n->mergeable_rx_bufs ? |
453 |
sizeof(struct virtio_net_hdr_mrg_rxbuf) : |
454 |
sizeof(struct virtio_net_hdr); |
455 |
|
456 |
if (out_num < 1 || out_sg->iov_len != hdr_len) { |
457 |
fprintf(stderr, "virtio-net header not in first element\n");
|
458 |
exit(1);
|
459 |
} |
460 |
|
461 |
/* ignore the header if GSO is not supported */
|
462 |
if (!has_vnet_hdr) {
|
463 |
out_num--; |
464 |
out_sg++; |
465 |
len += hdr_len; |
466 |
} else if (n->mergeable_rx_bufs) { |
467 |
/* tapfd expects a struct virtio_net_hdr */
|
468 |
hdr_len -= sizeof(struct virtio_net_hdr); |
469 |
out_sg->iov_len -= hdr_len; |
470 |
len += hdr_len; |
471 |
} |
472 |
|
473 |
len += qemu_sendv_packet(n->vc, out_sg, out_num); |
474 |
|
475 |
virtqueue_push(vq, &elem, len); |
476 |
virtio_notify(&n->vdev, vq); |
477 |
} |
478 |
} |
479 |
|
480 |
static void virtio_net_handle_tx(VirtIODevice *vdev, VirtQueue *vq) |
481 |
{ |
482 |
VirtIONet *n = to_virtio_net(vdev); |
483 |
|
484 |
if (n->tx_timer_active) {
|
485 |
virtio_queue_set_notification(vq, 1);
|
486 |
qemu_del_timer(n->tx_timer); |
487 |
n->tx_timer_active = 0;
|
488 |
virtio_net_flush_tx(n, vq); |
489 |
} else {
|
490 |
qemu_mod_timer(n->tx_timer, |
491 |
qemu_get_clock(vm_clock) + TX_TIMER_INTERVAL); |
492 |
n->tx_timer_active = 1;
|
493 |
virtio_queue_set_notification(vq, 0);
|
494 |
} |
495 |
} |
496 |
|
497 |
static void virtio_net_tx_timer(void *opaque) |
498 |
{ |
499 |
VirtIONet *n = opaque; |
500 |
|
501 |
n->tx_timer_active = 0;
|
502 |
|
503 |
/* Just in case the driver is not ready on more */
|
504 |
if (!(n->vdev.status & VIRTIO_CONFIG_S_DRIVER_OK))
|
505 |
return;
|
506 |
|
507 |
virtio_queue_set_notification(n->tx_vq, 1);
|
508 |
virtio_net_flush_tx(n, n->tx_vq); |
509 |
} |
510 |
|
511 |
static void virtio_net_save(QEMUFile *f, void *opaque) |
512 |
{ |
513 |
VirtIONet *n = opaque; |
514 |
|
515 |
virtio_save(&n->vdev, f); |
516 |
|
517 |
qemu_put_buffer(f, n->mac, ETH_ALEN); |
518 |
qemu_put_be32(f, n->tx_timer_active); |
519 |
qemu_put_be32(f, n->mergeable_rx_bufs); |
520 |
qemu_put_be16(f, n->status); |
521 |
qemu_put_be32(f, n->promisc); |
522 |
qemu_put_be32(f, n->allmulti); |
523 |
qemu_put_be32(f, n->mac_table.in_use); |
524 |
qemu_put_buffer(f, n->mac_table.macs, n->mac_table.in_use * ETH_ALEN); |
525 |
qemu_put_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
|
526 |
} |
527 |
|
528 |
static int virtio_net_load(QEMUFile *f, void *opaque, int version_id) |
529 |
{ |
530 |
VirtIONet *n = opaque; |
531 |
|
532 |
if (version_id < 2 || version_id > VIRTIO_NET_VM_VERSION) |
533 |
return -EINVAL;
|
534 |
|
535 |
virtio_load(&n->vdev, f); |
536 |
|
537 |
qemu_get_buffer(f, n->mac, ETH_ALEN); |
538 |
n->tx_timer_active = qemu_get_be32(f); |
539 |
n->mergeable_rx_bufs = qemu_get_be32(f); |
540 |
|
541 |
if (version_id >= 3) |
542 |
n->status = qemu_get_be16(f); |
543 |
|
544 |
if (version_id >= 4) { |
545 |
n->promisc = qemu_get_be32(f); |
546 |
n->allmulti = qemu_get_be32(f); |
547 |
} |
548 |
|
549 |
if (version_id >= 5) { |
550 |
n->mac_table.in_use = qemu_get_be32(f); |
551 |
/* MAC_TABLE_ENTRIES may be different from the saved image */
|
552 |
if (n->mac_table.in_use <= MAC_TABLE_ENTRIES) {
|
553 |
qemu_get_buffer(f, n->mac_table.macs, |
554 |
n->mac_table.in_use * ETH_ALEN); |
555 |
} else if (n->mac_table.in_use) { |
556 |
qemu_fseek(f, n->mac_table.in_use * ETH_ALEN, SEEK_CUR); |
557 |
n->promisc = 1;
|
558 |
n->mac_table.in_use = 0;
|
559 |
} |
560 |
} |
561 |
|
562 |
if (version_id >= 6) |
563 |
qemu_get_buffer(f, (uint8_t *)n->vlans, MAX_VLAN >> 3);
|
564 |
|
565 |
if (n->tx_timer_active) {
|
566 |
qemu_mod_timer(n->tx_timer, |
567 |
qemu_get_clock(vm_clock) + TX_TIMER_INTERVAL); |
568 |
} |
569 |
|
570 |
return 0; |
571 |
} |
572 |
|
573 |
static void virtio_net_cleanup(VLANClientState *vc) |
574 |
{ |
575 |
VirtIONet *n = vc->opaque; |
576 |
|
577 |
unregister_savevm("virtio-net", n);
|
578 |
|
579 |
qemu_free(n->mac_table.macs); |
580 |
qemu_free(n->vlans); |
581 |
|
582 |
qemu_del_timer(n->tx_timer); |
583 |
qemu_free_timer(n->tx_timer); |
584 |
|
585 |
virtio_cleanup(&n->vdev); |
586 |
} |
587 |
|
588 |
PCIDevice *virtio_net_init(PCIBus *bus, NICInfo *nd, int devfn)
|
589 |
{ |
590 |
VirtIONet *n; |
591 |
static int virtio_net_id; |
592 |
|
593 |
n = (VirtIONet *)virtio_init_pci(bus, "virtio-net",
|
594 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
595 |
PCI_DEVICE_ID_VIRTIO_NET, |
596 |
PCI_VENDOR_ID_REDHAT_QUMRANET, |
597 |
VIRTIO_ID_NET, |
598 |
PCI_CLASS_NETWORK_ETHERNET, 0x00,
|
599 |
sizeof(struct virtio_net_config), |
600 |
sizeof(VirtIONet));
|
601 |
if (!n)
|
602 |
return NULL; |
603 |
|
604 |
n->vdev.get_config = virtio_net_get_config; |
605 |
n->vdev.set_config = virtio_net_set_config; |
606 |
n->vdev.get_features = virtio_net_get_features; |
607 |
n->vdev.set_features = virtio_net_set_features; |
608 |
n->vdev.bad_features = virtio_net_bad_features; |
609 |
n->vdev.reset = virtio_net_reset; |
610 |
n->rx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_rx);
|
611 |
n->tx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_tx);
|
612 |
n->ctrl_vq = virtio_add_queue(&n->vdev, 16, virtio_net_handle_ctrl);
|
613 |
memcpy(n->mac, nd->macaddr, ETH_ALEN); |
614 |
n->status = VIRTIO_NET_S_LINK_UP; |
615 |
n->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name, |
616 |
virtio_net_receive, |
617 |
virtio_net_can_receive, |
618 |
virtio_net_cleanup, n); |
619 |
n->vc->link_status_changed = virtio_net_set_link_status; |
620 |
|
621 |
qemu_format_nic_info_str(n->vc, n->mac); |
622 |
|
623 |
n->tx_timer = qemu_new_timer(vm_clock, virtio_net_tx_timer, n); |
624 |
n->tx_timer_active = 0;
|
625 |
n->mergeable_rx_bufs = 0;
|
626 |
n->promisc = 1; /* for compatibility */ |
627 |
|
628 |
n->mac_table.macs = qemu_mallocz(MAC_TABLE_ENTRIES * ETH_ALEN); |
629 |
|
630 |
n->vlans = qemu_mallocz(MAX_VLAN >> 3);
|
631 |
|
632 |
register_savevm("virtio-net", virtio_net_id++, VIRTIO_NET_VM_VERSION,
|
633 |
virtio_net_save, virtio_net_load, n); |
634 |
return (PCIDevice *)n;
|
635 |
} |