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path: root/drivers/net/tun.c
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Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c52
1 files changed, 28 insertions, 24 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 87214a257d2a..3f5d28851aa2 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -103,13 +103,10 @@ struct tun_struct {
uid_t owner;
gid_t group;
- struct sk_buff_head readq;
-
struct net_device *dev;
struct fasync_struct *fasync;
struct tap_filter txflt;
- struct sock *sk;
struct socket socket;
#ifdef TUN_DEBUG
@@ -148,7 +145,7 @@ static int tun_attach(struct tun_struct *tun, struct file *file)
tfile->tun = tun;
tun->tfile = tfile;
dev_hold(tun->dev);
- sock_hold(tun->sk);
+ sock_hold(tun->socket.sk);
atomic_inc(&tfile->count);
out:
@@ -164,7 +161,7 @@ static void __tun_detach(struct tun_struct *tun)
netif_tx_unlock_bh(tun->dev);
/* Drop read queue */
- skb_queue_purge(&tun->readq);
+ skb_queue_purge(&tun->socket.sk->sk_receive_queue);
/* Drop the extra count on the net device */
dev_put(tun->dev);
@@ -333,7 +330,7 @@ static void tun_free_netdev(struct net_device *dev)
{
struct tun_struct *tun = netdev_priv(dev);
- sock_put(tun->sk);
+ sock_put(tun->socket.sk);
}
/* Net device open. */
@@ -351,7 +348,7 @@ static int tun_net_close(struct net_device *dev)
}
/* Net device start xmit */
-static int tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct tun_struct *tun = netdev_priv(dev);
@@ -367,7 +364,7 @@ static int tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
if (!check_filter(&tun->txflt, skb))
goto drop;
- if (skb_queue_len(&tun->readq) >= dev->tx_queue_len) {
+ if (skb_queue_len(&tun->socket.sk->sk_receive_queue) >= dev->tx_queue_len) {
if (!(tun->flags & TUN_ONE_QUEUE)) {
/* Normal queueing mode. */
/* Packet scheduler handles dropping of further packets. */
@@ -384,19 +381,19 @@ static int tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
}
/* Enqueue packet */
- skb_queue_tail(&tun->readq, skb);
+ skb_queue_tail(&tun->socket.sk->sk_receive_queue, skb);
dev->trans_start = jiffies;
/* Notify and wake up reader process */
if (tun->flags & TUN_FASYNC)
kill_fasync(&tun->fasync, SIGIO, POLL_IN);
wake_up_interruptible(&tun->socket.wait);
- return 0;
+ return NETDEV_TX_OK;
drop:
dev->stats.tx_dropped++;
kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
static void tun_net_mclist(struct net_device *dev)
@@ -485,13 +482,13 @@ static unsigned int tun_chr_poll(struct file *file, poll_table * wait)
if (!tun)
return POLLERR;
- sk = tun->sk;
+ sk = tun->socket.sk;
DBG(KERN_INFO "%s: tun_chr_poll\n", tun->dev->name);
poll_wait(file, &tun->socket.wait, wait);
- if (!skb_queue_empty(&tun->readq))
+ if (!skb_queue_empty(&sk->sk_receive_queue))
mask |= POLLIN | POLLRDNORM;
if (sock_writeable(sk) ||
@@ -512,7 +509,7 @@ static inline struct sk_buff *tun_alloc_skb(struct tun_struct *tun,
size_t prepad, size_t len,
size_t linear, int noblock)
{
- struct sock *sk = tun->sk;
+ struct sock *sk = tun->socket.sk;
struct sk_buff *skb;
int err;
@@ -634,6 +631,9 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun,
case VIRTIO_NET_HDR_GSO_TCPV6:
skb_shinfo(skb)->gso_type = SKB_GSO_TCPV6;
break;
+ case VIRTIO_NET_HDR_GSO_UDP:
+ skb_shinfo(skb)->gso_type = SKB_GSO_UDP;
+ break;
default:
tun->dev->stats.rx_frame_errors++;
kfree_skb(skb);
@@ -719,6 +719,8 @@ static __inline__ ssize_t tun_put_user(struct tun_struct *tun,
gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV4;
else if (sinfo->gso_type & SKB_GSO_TCPV6)
gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV6;
+ else if (sinfo->gso_type & SKB_GSO_UDP)
+ gso.gso_type = VIRTIO_NET_HDR_GSO_UDP;
else
BUG();
if (sinfo->gso_type & SKB_GSO_TCP_ECN)
@@ -775,7 +777,7 @@ static ssize_t tun_chr_aio_read(struct kiocb *iocb, const struct iovec *iv,
current->state = TASK_INTERRUPTIBLE;
/* Read frames from the queue */
- if (!(skb=skb_dequeue(&tun->readq))) {
+ if (!(skb=skb_dequeue(&tun->socket.sk->sk_receive_queue))) {
if (file->f_flags & O_NONBLOCK) {
ret = -EAGAIN;
break;
@@ -812,8 +814,6 @@ static void tun_setup(struct net_device *dev)
{
struct tun_struct *tun = netdev_priv(dev);
- skb_queue_head_init(&tun->readq);
-
tun->owner = -1;
tun->group = -1;
@@ -934,7 +934,7 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
(tun->group != -1 && !in_egroup_p(tun->group))) &&
!capable(CAP_NET_ADMIN))
return -EPERM;
- err = security_tun_dev_attach(tun->sk);
+ err = security_tun_dev_attach(tun->socket.sk);
if (err < 0)
return err;
@@ -992,7 +992,6 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
sk->sk_write_space = tun_sock_write_space;
sk->sk_sndbuf = INT_MAX;
- tun->sk = sk;
container_of(sk, struct tun_sock, sk)->tun = tun;
security_tun_dev_post_create(sk);
@@ -1005,7 +1004,6 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
goto err_free_sk;
}
- err = -EINVAL;
err = register_netdevice(tun->dev);
if (err < 0)
goto err_free_sk;
@@ -1077,7 +1075,8 @@ static int set_offload(struct net_device *dev, unsigned long arg)
old_features = dev->features;
/* Unset features, set them as we chew on the arg. */
features = (old_features & ~(NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST
- |NETIF_F_TSO_ECN|NETIF_F_TSO|NETIF_F_TSO6));
+ |NETIF_F_TSO_ECN|NETIF_F_TSO|NETIF_F_TSO6
+ |NETIF_F_UFO));
if (arg & TUN_F_CSUM) {
features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
@@ -1094,6 +1093,11 @@ static int set_offload(struct net_device *dev, unsigned long arg)
features |= NETIF_F_TSO6;
arg &= ~(TUN_F_TSO4|TUN_F_TSO6);
}
+
+ if (arg & TUN_F_UFO) {
+ features |= NETIF_F_UFO;
+ arg &= ~TUN_F_UFO;
+ }
}
/* This gives the user a way to test for new features in future by
@@ -1247,7 +1251,7 @@ static long tun_chr_ioctl(struct file *file, unsigned int cmd,
break;
case TUNGETSNDBUF:
- sndbuf = tun->sk->sk_sndbuf;
+ sndbuf = tun->socket.sk->sk_sndbuf;
if (copy_to_user(argp, &sndbuf, sizeof(sndbuf)))
ret = -EFAULT;
break;
@@ -1258,7 +1262,7 @@ static long tun_chr_ioctl(struct file *file, unsigned int cmd,
break;
}
- tun->sk->sk_sndbuf = sndbuf;
+ tun->socket.sk->sk_sndbuf = sndbuf;
break;
default:
@@ -1341,7 +1345,7 @@ static int tun_chr_close(struct inode *inode, struct file *file)
tun = tfile->tun;
if (tun)
- sock_put(tun->sk);
+ sock_put(tun->socket.sk);
put_net(tfile->net);
kfree(tfile);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 02:48:49 +0000