#include <linux/virtio.h>
#include <linux/virtio_net.h>
#include <linux/scatterlist.h>
+#include <linux/if_vlan.h>
static int napi_weight = 128;
module_param(napi_weight, int, 0444);
module_param(gso, bool, 0444);
/* FIXME: MTU in config. */
-#define MAX_PACKET_LEN (ETH_HLEN+ETH_DATA_LEN)
+#define MAX_PACKET_LEN (ETH_HLEN + VLAN_HLEN + ETH_DATA_LEN)
+#define GOOD_COPY_LEN 128
+
+#define VIRTNET_SEND_COMMAND_SG_MAX 2
struct virtnet_info
{
struct virtio_device *vdev;
- struct virtqueue *rvq, *svq;
+ struct virtqueue *rvq, *svq, *cvq;
struct net_device *dev;
struct napi_struct napi;
+ unsigned int status;
/* The skb we couldn't send because buffers were full. */
struct sk_buff *last_xmit_skb;
struct tasklet_struct tasklet;
bool free_in_tasklet;
+ /* I like... big packets and I cannot lie! */
+ bool big_packets;
+
+ /* Host will merge rx buffers for big packets (shake it! shake it!) */
+ bool mergeable_rx_bufs;
+
/* Receive & send queues. */
struct sk_buff_head recv;
struct sk_buff_head send;
+
+ /* Chain pages by the private ptr. */
+ struct page *pages;
};
-static inline struct virtio_net_hdr *skb_vnet_hdr(struct sk_buff *skb)
+static inline void *skb_vnet_hdr(struct sk_buff *skb)
{
return (struct virtio_net_hdr *)skb->cb;
}
-static inline void vnet_hdr_to_sg(struct scatterlist *sg, struct sk_buff *skb)
+static void give_a_page(struct virtnet_info *vi, struct page *page)
{
- sg_init_one(sg, skb_vnet_hdr(skb), sizeof(struct virtio_net_hdr));
+ page->private = (unsigned long)vi->pages;
+ vi->pages = page;
+}
+
+static void trim_pages(struct virtnet_info *vi, struct sk_buff *skb)
+{
+ unsigned int i;
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
+ give_a_page(vi, skb_shinfo(skb)->frags[i].page);
+ skb_shinfo(skb)->nr_frags = 0;
+ skb->data_len = 0;
+}
+
+static struct page *get_a_page(struct virtnet_info *vi, gfp_t gfp_mask)
+{
+ struct page *p = vi->pages;
+
+ if (p)
+ vi->pages = (struct page *)p->private;
+ else
+ p = alloc_page(gfp_mask);
+ return p;
}
static void skb_xmit_done(struct virtqueue *svq)
static void receive_skb(struct net_device *dev, struct sk_buff *skb,
unsigned len)
{
+ struct virtnet_info *vi = netdev_priv(dev);
struct virtio_net_hdr *hdr = skb_vnet_hdr(skb);
+ int err;
+ int i;
if (unlikely(len < sizeof(struct virtio_net_hdr) + ETH_HLEN)) {
pr_debug("%s: short packet %i\n", dev->name, len);
dev->stats.rx_length_errors++;
goto drop;
}
- len -= sizeof(struct virtio_net_hdr);
- BUG_ON(len > MAX_PACKET_LEN);
- skb_trim(skb, len);
+ if (vi->mergeable_rx_bufs) {
+ struct virtio_net_hdr_mrg_rxbuf *mhdr = skb_vnet_hdr(skb);
+ unsigned int copy;
+ char *p = page_address(skb_shinfo(skb)->frags[0].page);
+
+ if (len > PAGE_SIZE)
+ len = PAGE_SIZE;
+ len -= sizeof(struct virtio_net_hdr_mrg_rxbuf);
+
+ memcpy(hdr, p, sizeof(*mhdr));
+ p += sizeof(*mhdr);
+
+ copy = len;
+ if (copy > skb_tailroom(skb))
+ copy = skb_tailroom(skb);
+
+ memcpy(skb_put(skb, copy), p, copy);
+
+ len -= copy;
+
+ if (!len) {
+ give_a_page(vi, skb_shinfo(skb)->frags[0].page);
+ skb_shinfo(skb)->nr_frags--;
+ } else {
+ skb_shinfo(skb)->frags[0].page_offset +=
+ sizeof(*mhdr) + copy;
+ skb_shinfo(skb)->frags[0].size = len;
+ skb->data_len += len;
+ skb->len += len;
+ }
+ while (--mhdr->num_buffers) {
+ struct sk_buff *nskb;
+
+ i = skb_shinfo(skb)->nr_frags;
+ if (i >= MAX_SKB_FRAGS) {
+ pr_debug("%s: packet too long %d\n", dev->name,
+ len);
+ dev->stats.rx_length_errors++;
+ goto drop;
+ }
+
+ nskb = vi->rvq->vq_ops->get_buf(vi->rvq, &len);
+ if (!nskb) {
+ pr_debug("%s: rx error: %d buffers missing\n",
+ dev->name, mhdr->num_buffers);
+ dev->stats.rx_length_errors++;
+ goto drop;
+ }
+
+ __skb_unlink(nskb, &vi->recv);
+ vi->num--;
+
+ skb_shinfo(skb)->frags[i] = skb_shinfo(nskb)->frags[0];
+ skb_shinfo(nskb)->nr_frags = 0;
+ kfree_skb(nskb);
+
+ if (len > PAGE_SIZE)
+ len = PAGE_SIZE;
+
+ skb_shinfo(skb)->frags[i].size = len;
+ skb_shinfo(skb)->nr_frags++;
+ skb->data_len += len;
+ skb->len += len;
+ }
+ } else {
+ len -= sizeof(struct virtio_net_hdr);
+
+ if (len <= MAX_PACKET_LEN)
+ trim_pages(vi, skb);
+
+ err = pskb_trim(skb, len);
+ if (err) {
+ pr_debug("%s: pskb_trim failed %i %d\n", dev->name,
+ len, err);
+ dev->stats.rx_dropped++;
+ goto drop;
+ }
+ }
+
+ skb->truesize += skb->data_len;
dev->stats.rx_bytes += skb->len;
dev->stats.rx_packets++;
dev_kfree_skb(skb);
}
-static void try_fill_recv(struct virtnet_info *vi)
+static void try_fill_recv_maxbufs(struct virtnet_info *vi)
{
struct sk_buff *skb;
struct scatterlist sg[2+MAX_SKB_FRAGS];
- int num, err;
+ int num, err, i;
sg_init_table(sg, 2+MAX_SKB_FRAGS);
for (;;) {
+ struct virtio_net_hdr *hdr;
+
skb = netdev_alloc_skb(vi->dev, MAX_PACKET_LEN);
if (unlikely(!skb))
break;
skb_put(skb, MAX_PACKET_LEN);
- vnet_hdr_to_sg(sg, skb);
+
+ hdr = skb_vnet_hdr(skb);
+ sg_set_buf(sg, hdr, sizeof(*hdr));
+
+ if (vi->big_packets) {
+ for (i = 0; i < MAX_SKB_FRAGS; i++) {
+ skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+ f->page = get_a_page(vi, GFP_ATOMIC);
+ if (!f->page)
+ break;
+
+ f->page_offset = 0;
+ f->size = PAGE_SIZE;
+
+ skb->data_len += PAGE_SIZE;
+ skb->len += PAGE_SIZE;
+
+ skb_shinfo(skb)->nr_frags++;
+ }
+ }
+
num = skb_to_sgvec(skb, sg+1, 0, skb->len) + 1;
skb_queue_head(&vi->recv, skb);
err = vi->rvq->vq_ops->add_buf(vi->rvq, sg, 0, num, skb);
if (err) {
skb_unlink(skb, &vi->recv);
+ trim_pages(vi, skb);
+ kfree_skb(skb);
+ break;
+ }
+ vi->num++;
+ }
+ if (unlikely(vi->num > vi->max))
+ vi->max = vi->num;
+ vi->rvq->vq_ops->kick(vi->rvq);
+}
+
+static void try_fill_recv(struct virtnet_info *vi)
+{
+ struct sk_buff *skb;
+ struct scatterlist sg[1];
+ int err;
+
+ if (!vi->mergeable_rx_bufs) {
+ try_fill_recv_maxbufs(vi);
+ return;
+ }
+
+ for (;;) {
+ skb_frag_t *f;
+
+ skb = netdev_alloc_skb(vi->dev, GOOD_COPY_LEN + NET_IP_ALIGN);
+ if (unlikely(!skb))
+ break;
+
+ skb_reserve(skb, NET_IP_ALIGN);
+
+ f = &skb_shinfo(skb)->frags[0];
+ f->page = get_a_page(vi, GFP_ATOMIC);
+ if (!f->page) {
+ kfree_skb(skb);
+ break;
+ }
+
+ f->page_offset = 0;
+ f->size = PAGE_SIZE;
+
+ skb_shinfo(skb)->nr_frags++;
+
+ sg_init_one(sg, page_address(f->page), PAGE_SIZE);
+ skb_queue_head(&vi->recv, skb);
+
+ err = vi->rvq->vq_ops->add_buf(vi->rvq, sg, 0, 1, skb);
+ if (err) {
+ skb_unlink(skb, &vi->recv);
kfree_skb(skb);
break;
}
{
struct virtnet_info *vi = rvq->vdev->priv;
/* Schedule NAPI, Suppress further interrupts if successful. */
- if (netif_rx_schedule_prep(vi->dev, &vi->napi)) {
+ if (napi_schedule_prep(&vi->napi)) {
rvq->vq_ops->disable_cb(rvq);
- __netif_rx_schedule(vi->dev, &vi->napi);
+ __napi_schedule(&vi->napi);
}
}
/* Out of packets? */
if (received < budget) {
- netif_rx_complete(vi->dev, napi);
+ napi_complete(napi);
if (unlikely(!vi->rvq->vq_ops->enable_cb(vi->rvq))
&& napi_schedule_prep(napi)) {
vi->rvq->vq_ops->disable_cb(vi->rvq);
- __netif_rx_schedule(vi->dev, napi);
+ __napi_schedule(napi);
goto again;
}
}
{
int num, err;
struct scatterlist sg[2+MAX_SKB_FRAGS];
- struct virtio_net_hdr *hdr;
+ struct virtio_net_hdr_mrg_rxbuf *mhdr = skb_vnet_hdr(skb);
+ struct virtio_net_hdr *hdr = skb_vnet_hdr(skb);
const unsigned char *dest = ((struct ethhdr *)skb->data)->h_dest;
sg_init_table(sg, 2+MAX_SKB_FRAGS);
- pr_debug("%s: xmit %p " MAC_FMT "\n", vi->dev->name, skb,
- dest[0], dest[1], dest[2],
- dest[3], dest[4], dest[5]);
+ pr_debug("%s: xmit %p %pM\n", vi->dev->name, skb, dest);
- /* Encode metadata header at front. */
- hdr = skb_vnet_hdr(skb);
if (skb->ip_summed == CHECKSUM_PARTIAL) {
hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
hdr->csum_start = skb->csum_start - skb_headroom(skb);
hdr->gso_size = hdr->hdr_len = 0;
}
- vnet_hdr_to_sg(sg, skb);
+ mhdr->num_buffers = 0;
+
+ /* Encode metadata header at front. */
+ if (vi->mergeable_rx_bufs)
+ sg_set_buf(sg, mhdr, sizeof(*mhdr));
+ else
+ sg_set_buf(sg, hdr, sizeof(*hdr));
+
num = skb_to_sgvec(skb, sg+1, 0, skb->len) + 1;
err = vi->svq->vq_ops->add_buf(vi->svq, sg, num, 0, skb);
goto done;
}
+static int virtnet_set_mac_address(struct net_device *dev, void *p)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct virtio_device *vdev = vi->vdev;
+ int ret;
+
+ ret = eth_mac_addr(dev, p);
+ if (ret)
+ return ret;
+
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_MAC))
+ vdev->config->set(vdev, offsetof(struct virtio_net_config, mac),
+ dev->dev_addr, dev->addr_len);
+
+ return 0;
+}
+
#ifdef CONFIG_NET_POLL_CONTROLLER
static void virtnet_netpoll(struct net_device *dev)
{
* won't get another interrupt, so process any outstanding packets
* now. virtnet_poll wants re-enable the queue, so we disable here.
* We synchronize against interrupts via NAPI_STATE_SCHED */
- if (netif_rx_schedule_prep(dev, &vi->napi)) {
+ if (napi_schedule_prep(&vi->napi)) {
vi->rvq->vq_ops->disable_cb(vi->rvq);
- __netif_rx_schedule(dev, &vi->napi);
+ __napi_schedule(&vi->napi);
}
return 0;
}
+/*
+ * Send command via the control virtqueue and check status. Commands
+ * supported by the hypervisor, as indicated by feature bits, should
+ * never fail unless improperly formated.
+ */
+static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
+ struct scatterlist *data, int out, int in)
+{
+ struct scatterlist *s, sg[VIRTNET_SEND_COMMAND_SG_MAX + 2];
+ struct virtio_net_ctrl_hdr ctrl;
+ virtio_net_ctrl_ack status = ~0;
+ unsigned int tmp;
+ int i;
+
+ if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {
+ BUG(); /* Caller should know better */
+ return false;
+ }
+
+ BUG_ON(out + in > VIRTNET_SEND_COMMAND_SG_MAX);
+
+ out++; /* Add header */
+ in++; /* Add return status */
+
+ ctrl.class = class;
+ ctrl.cmd = cmd;
+
+ sg_init_table(sg, out + in);
+
+ sg_set_buf(&sg[0], &ctrl, sizeof(ctrl));
+ for_each_sg(data, s, out + in - 2, i)
+ sg_set_buf(&sg[i + 1], sg_virt(s), s->length);
+ sg_set_buf(&sg[out + in - 1], &status, sizeof(status));
+
+ if (vi->cvq->vq_ops->add_buf(vi->cvq, sg, out, in, vi) != 0)
+ BUG();
+
+ vi->cvq->vq_ops->kick(vi->cvq);
+
+ /*
+ * Spin for a response, the kick causes an ioport write, trapping
+ * into the hypervisor, so the request should be handled immediately.
+ */
+ while (!vi->cvq->vq_ops->get_buf(vi->cvq, &tmp))
+ cpu_relax();
+
+ return status == VIRTIO_NET_OK;
+}
+
static int virtnet_close(struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
return ethtool_op_set_tx_hw_csum(dev, data);
}
+static void virtnet_set_rx_mode(struct net_device *dev)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct scatterlist sg[2];
+ u8 promisc, allmulti;
+ struct virtio_net_ctrl_mac *mac_data;
+ struct dev_addr_list *addr;
+ void *buf;
+ int i;
+
+ /* We can't dynamicaly set ndo_set_rx_mode, so return gracefully */
+ if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_RX))
+ return;
+
+ promisc = ((dev->flags & IFF_PROMISC) != 0);
+ allmulti = ((dev->flags & IFF_ALLMULTI) != 0);
+
+ sg_init_one(sg, &promisc, sizeof(promisc));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
+ VIRTIO_NET_CTRL_RX_PROMISC,
+ sg, 1, 0))
+ dev_warn(&dev->dev, "Failed to %sable promisc mode.\n",
+ promisc ? "en" : "dis");
+
+ sg_init_one(sg, &allmulti, sizeof(allmulti));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_RX,
+ VIRTIO_NET_CTRL_RX_ALLMULTI,
+ sg, 1, 0))
+ dev_warn(&dev->dev, "Failed to %sable allmulti mode.\n",
+ allmulti ? "en" : "dis");
+
+ /* MAC filter - use one buffer for both lists */
+ mac_data = buf = kzalloc(((dev->uc_count + dev->mc_count) * ETH_ALEN) +
+ (2 * sizeof(mac_data->entries)), GFP_ATOMIC);
+ if (!buf) {
+ dev_warn(&dev->dev, "No memory for MAC address buffer\n");
+ return;
+ }
+
+ sg_init_table(sg, 2);
+
+ /* Store the unicast list and count in the front of the buffer */
+ mac_data->entries = dev->uc_count;
+ addr = dev->uc_list;
+ for (i = 0; i < dev->uc_count; i++, addr = addr->next)
+ memcpy(&mac_data->macs[i][0], addr->da_addr, ETH_ALEN);
+
+ sg_set_buf(&sg[0], mac_data,
+ sizeof(mac_data->entries) + (dev->uc_count * ETH_ALEN));
+
+ /* multicast list and count fill the end */
+ mac_data = (void *)&mac_data->macs[dev->uc_count][0];
+
+ mac_data->entries = dev->mc_count;
+ addr = dev->mc_list;
+ for (i = 0; i < dev->mc_count; i++, addr = addr->next)
+ memcpy(&mac_data->macs[i][0], addr->da_addr, ETH_ALEN);
+
+ sg_set_buf(&sg[1], mac_data,
+ sizeof(mac_data->entries) + (dev->mc_count * ETH_ALEN));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_MAC,
+ VIRTIO_NET_CTRL_MAC_TABLE_SET,
+ sg, 2, 0))
+ dev_warn(&dev->dev, "Failed to set MAC fitler table.\n");
+
+ kfree(buf);
+}
+
+static void virtnet_vlan_rx_add_vid(struct net_device *dev, u16 vid)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct scatterlist sg;
+
+ sg_init_one(&sg, &vid, sizeof(vid));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
+ VIRTIO_NET_CTRL_VLAN_ADD, &sg, 1, 0))
+ dev_warn(&dev->dev, "Failed to add VLAN ID %d.\n", vid);
+}
+
+static void virtnet_vlan_rx_kill_vid(struct net_device *dev, u16 vid)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct scatterlist sg;
+
+ sg_init_one(&sg, &vid, sizeof(vid));
+
+ if (!virtnet_send_command(vi, VIRTIO_NET_CTRL_VLAN,
+ VIRTIO_NET_CTRL_VLAN_DEL, &sg, 1, 0))
+ dev_warn(&dev->dev, "Failed to kill VLAN ID %d.\n", vid);
+}
+
static struct ethtool_ops virtnet_ethtool_ops = {
.set_tx_csum = virtnet_set_tx_csum,
.set_sg = ethtool_op_set_sg,
+ .set_tso = ethtool_op_set_tso,
+ .get_link = ethtool_op_get_link,
+};
+
+#define MIN_MTU 68
+#define MAX_MTU 65535
+
+static int virtnet_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu < MIN_MTU || new_mtu > MAX_MTU)
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static const struct net_device_ops virtnet_netdev = {
+ .ndo_open = virtnet_open,
+ .ndo_stop = virtnet_close,
+ .ndo_start_xmit = start_xmit,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = virtnet_set_mac_address,
+ .ndo_set_rx_mode = virtnet_set_rx_mode,
+ .ndo_change_mtu = virtnet_change_mtu,
+ .ndo_vlan_rx_add_vid = virtnet_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = virtnet_vlan_rx_kill_vid,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = virtnet_netpoll,
+#endif
};
+static void virtnet_update_status(struct virtnet_info *vi)
+{
+ u16 v;
+
+ if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_STATUS))
+ return;
+
+ vi->vdev->config->get(vi->vdev,
+ offsetof(struct virtio_net_config, status),
+ &v, sizeof(v));
+
+ /* Ignore unknown (future) status bits */
+ v &= VIRTIO_NET_S_LINK_UP;
+
+ if (vi->status == v)
+ return;
+
+ vi->status = v;
+
+ if (vi->status & VIRTIO_NET_S_LINK_UP) {
+ netif_carrier_on(vi->dev);
+ netif_wake_queue(vi->dev);
+ } else {
+ netif_carrier_off(vi->dev);
+ netif_stop_queue(vi->dev);
+ }
+}
+
+static void virtnet_config_changed(struct virtio_device *vdev)
+{
+ struct virtnet_info *vi = vdev->priv;
+
+ virtnet_update_status(vi);
+}
+
static int virtnet_probe(struct virtio_device *vdev)
{
int err;
return -ENOMEM;
/* Set up network device as normal. */
- dev->open = virtnet_open;
- dev->stop = virtnet_close;
- dev->hard_start_xmit = start_xmit;
+ dev->netdev_ops = &virtnet_netdev;
dev->features = NETIF_F_HIGHDMA;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = virtnet_netpoll;
-#endif
SET_ETHTOOL_OPS(dev, &virtnet_ethtool_ops);
SET_NETDEV_DEV(dev, &vdev->dev);
vi->dev = dev;
vi->vdev = vdev;
vdev->priv = vi;
+ vi->pages = NULL;
/* If they give us a callback when all buffers are done, we don't need
* the timer. */
vi->free_in_tasklet = virtio_has_feature(vdev,VIRTIO_F_NOTIFY_ON_EMPTY);
+ /* If we can receive ANY GSO packets, we must allocate large ones. */
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO4)
+ || virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_TSO6)
+ || virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_ECN))
+ vi->big_packets = true;
+
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_MRG_RXBUF))
+ vi->mergeable_rx_bufs = true;
+
/* We expect two virtqueues, receive then send. */
vi->rvq = vdev->config->find_vq(vdev, 0, skb_recv_done);
if (IS_ERR(vi->rvq)) {
goto free_recv;
}
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {
+ vi->cvq = vdev->config->find_vq(vdev, 2, NULL);
+ if (IS_ERR(vi->cvq)) {
+ err = PTR_ERR(vi->svq);
+ goto free_send;
+ }
+
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VLAN))
+ dev->features |= NETIF_F_HW_VLAN_FILTER;
+ }
+
/* Initialize our empty receive and send queues. */
skb_queue_head_init(&vi->recv);
skb_queue_head_init(&vi->send);
err = register_netdev(dev);
if (err) {
pr_debug("virtio_net: registering device failed\n");
- goto free_send;
+ goto free_ctrl;
}
/* Last of all, set up some receive buffers. */
goto unregister;
}
+ vi->status = VIRTIO_NET_S_LINK_UP;
+ virtnet_update_status(vi);
+ netif_carrier_on(dev);
+
pr_debug("virtnet: registered device %s\n", dev->name);
return 0;
unregister:
unregister_netdev(dev);
+free_ctrl:
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ))
+ vdev->config->del_vq(vi->cvq);
free_send:
vdev->config->del_vq(vi->svq);
free_recv:
vdev->config->del_vq(vi->svq);
vdev->config->del_vq(vi->rvq);
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ))
+ vdev->config->del_vq(vi->cvq);
unregister_netdev(vi->dev);
+
+ while (vi->pages)
+ __free_pages(get_a_page(vi, GFP_KERNEL), 0);
+
free_netdev(vi->dev);
}
VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM,
VIRTIO_NET_F_GSO, VIRTIO_NET_F_MAC,
VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6,
- VIRTIO_NET_F_HOST_ECN, VIRTIO_F_NOTIFY_ON_EMPTY,
+ VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6,
+ VIRTIO_NET_F_GUEST_ECN, /* We don't yet handle UFO input. */
+ VIRTIO_NET_F_MRG_RXBUF, VIRTIO_NET_F_STATUS, VIRTIO_NET_F_CTRL_VQ,
+ VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN,
+ VIRTIO_F_NOTIFY_ON_EMPTY,
};
static struct virtio_driver virtio_net = {
.id_table = id_table,
.probe = virtnet_probe,
.remove = __devexit_p(virtnet_remove),
+ .config_changed = virtnet_config_changed,
};
static int __init init(void)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff