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-rw-r--r--drivers/net/tap.c332
1 files changed, 166 insertions, 166 deletions
diff --git a/drivers/net/tap.c b/drivers/net/tap.c
index 6f6228e4fd3f..15ca2d531d05 100644
--- a/drivers/net/tap.c
+++ b/drivers/net/tap.c
@@ -24,16 +24,16 @@
#include <linux/skb_array.h>
/*
- * A macvtap queue is the central object of this driver, it connects
+ * A tap queue is the central object of this driver, it connects
* an open character device to a macvlan interface. There can be
* multiple queues on one interface, which map back to queues
* implemented in hardware on the underlying device.
*
- * macvtap_proto is used to allocate queues through the sock allocation
+ * tap_proto is used to allocate queues through the sock allocation
* mechanism.
*
*/
-struct macvtap_queue {
+struct tap_queue {
struct sock sk;
struct socket sock;
struct socket_wq wq;
@@ -47,21 +47,21 @@ struct macvtap_queue {
struct skb_array skb_array;
};
-#define MACVTAP_FEATURES (IFF_VNET_HDR | IFF_MULTI_QUEUE)
+#define TAP_IFFEATURES (IFF_VNET_HDR | IFF_MULTI_QUEUE)
-#define MACVTAP_VNET_LE 0x80000000
-#define MACVTAP_VNET_BE 0x40000000
+#define TAP_VNET_LE 0x80000000
+#define TAP_VNET_BE 0x40000000
#ifdef CONFIG_TUN_VNET_CROSS_LE
-static inline bool macvtap_legacy_is_little_endian(struct macvtap_queue *q)
+static inline bool tap_legacy_is_little_endian(struct tap_queue *q)
{
- return q->flags & MACVTAP_VNET_BE ? false :
+ return q->flags & TAP_VNET_BE ? false :
virtio_legacy_is_little_endian();
}
-static long macvtap_get_vnet_be(struct macvtap_queue *q, int __user *sp)
+static long tap_get_vnet_be(struct tap_queue *q, int __user *sp)
{
- int s = !!(q->flags & MACVTAP_VNET_BE);
+ int s = !!(q->flags & TAP_VNET_BE);
if (put_user(s, sp))
return -EFAULT;
@@ -69,7 +69,7 @@ static long macvtap_get_vnet_be(struct macvtap_queue *q, int __user *sp)
return 0;
}
-static long macvtap_set_vnet_be(struct macvtap_queue *q, int __user *sp)
+static long tap_set_vnet_be(struct tap_queue *q, int __user *sp)
{
int s;
@@ -77,77 +77,77 @@ static long macvtap_set_vnet_be(struct macvtap_queue *q, int __user *sp)
return -EFAULT;
if (s)
- q->flags |= MACVTAP_VNET_BE;
+ q->flags |= TAP_VNET_BE;
else
- q->flags &= ~MACVTAP_VNET_BE;
+ q->flags &= ~TAP_VNET_BE;
return 0;
}
#else
-static inline bool macvtap_legacy_is_little_endian(struct macvtap_queue *q)
+static inline bool tap_legacy_is_little_endian(struct tap_queue *q)
{
return virtio_legacy_is_little_endian();
}
-static long macvtap_get_vnet_be(struct macvtap_queue *q, int __user *argp)
+static long tap_get_vnet_be(struct tap_queue *q, int __user *argp)
{
return -EINVAL;
}
-static long macvtap_set_vnet_be(struct macvtap_queue *q, int __user *argp)
+static long tap_set_vnet_be(struct tap_queue *q, int __user *argp)
{
return -EINVAL;
}
#endif /* CONFIG_TUN_VNET_CROSS_LE */
-static inline bool macvtap_is_little_endian(struct macvtap_queue *q)
+static inline bool tap_is_little_endian(struct tap_queue *q)
{
- return q->flags & MACVTAP_VNET_LE ||
- macvtap_legacy_is_little_endian(q);
+ return q->flags & TAP_VNET_LE ||
+ tap_legacy_is_little_endian(q);
}
-static inline u16 macvtap16_to_cpu(struct macvtap_queue *q, __virtio16 val)
+static inline u16 tap16_to_cpu(struct tap_queue *q, __virtio16 val)
{
- return __virtio16_to_cpu(macvtap_is_little_endian(q), val);
+ return __virtio16_to_cpu(tap_is_little_endian(q), val);
}
-static inline __virtio16 cpu_to_macvtap16(struct macvtap_queue *q, u16 val)
+static inline __virtio16 cpu_to_tap16(struct tap_queue *q, u16 val)
{
- return __cpu_to_virtio16(macvtap_is_little_endian(q), val);
+ return __cpu_to_virtio16(tap_is_little_endian(q), val);
}
-static struct proto macvtap_proto = {
- .name = "macvtap",
+static struct proto tap_proto = {
+ .name = "tap",
.owner = THIS_MODULE,
- .obj_size = sizeof (struct macvtap_queue),
+ .obj_size = sizeof(struct tap_queue),
};
-#define MACVTAP_NUM_DEVS (1U << MINORBITS)
+#define TAP_NUM_DEVS (1U << MINORBITS)
static DEFINE_MUTEX(minor_lock);
DEFINE_IDR(minor_idr);
#define GOODCOPY_LEN 128
-static const struct proto_ops macvtap_socket_ops;
+static const struct proto_ops tap_socket_ops;
#define RX_OFFLOADS (NETIF_F_GRO | NETIF_F_LRO)
#define TAP_FEATURES (NETIF_F_GSO | NETIF_F_SG | NETIF_F_FRAGLIST)
-static struct macvlan_dev *macvtap_get_vlan_rcu(const struct net_device *dev)
+static struct macvlan_dev *tap_get_vlan_rcu(const struct net_device *dev)
{
return rcu_dereference(dev->rx_handler_data);
}
/*
* RCU usage:
- * The macvtap_queue and the macvlan_dev are loosely coupled, the
+ * The tap_queue and the macvlan_dev are loosely coupled, the
* pointers from one to the other can only be read while rcu_read_lock
* or rtnl is held.
*
- * Both the file and the macvlan_dev hold a reference on the macvtap_queue
+ * Both the file and the macvlan_dev hold a reference on the tap_queue
* through sock_hold(&q->sk). When the macvlan_dev goes away first,
* q->vlan becomes inaccessible. When the files gets closed,
- * macvtap_get_queue() fails.
+ * tap_get_queue() fails.
*
* There may still be references to the struct sock inside of the
* queue from outbound SKBs, but these never reference back to the
@@ -155,8 +155,8 @@ static struct macvlan_dev *macvtap_get_vlan_rcu(const struct net_device *dev)
* when both our references and any pending SKBs are gone.
*/
-static int macvtap_enable_queue(struct net_device *dev, struct file *file,
- struct macvtap_queue *q)
+static int tap_enable_queue(struct net_device *dev, struct file *file,
+ struct tap_queue *q)
{
struct macvlan_dev *vlan = netdev_priv(dev);
int err = -EINVAL;
@@ -177,12 +177,12 @@ out:
}
/* Requires RTNL */
-static int macvtap_set_queue(struct net_device *dev, struct file *file,
- struct macvtap_queue *q)
+static int tap_set_queue(struct net_device *dev, struct file *file,
+ struct tap_queue *q)
{
struct macvlan_dev *vlan = netdev_priv(dev);
- if (vlan->numqueues == MAX_MACVTAP_QUEUES)
+ if (vlan->numqueues == MAX_TAP_QUEUES)
return -EBUSY;
rcu_assign_pointer(q->vlan, vlan);
@@ -201,10 +201,10 @@ static int macvtap_set_queue(struct net_device *dev, struct file *file,
return 0;
}
-static int macvtap_disable_queue(struct macvtap_queue *q)
+static int tap_disable_queue(struct tap_queue *q)
{
struct macvlan_dev *vlan;
- struct macvtap_queue *nq;
+ struct tap_queue *nq;
ASSERT_RTNL();
if (!q->enabled)
@@ -236,7 +236,7 @@ static int macvtap_disable_queue(struct macvtap_queue *q)
* Using the spinlock makes sure that we don't get
* to the queue again after destroying it.
*/
-static void macvtap_put_queue(struct macvtap_queue *q)
+static void tap_put_queue(struct tap_queue *q)
{
struct macvlan_dev *vlan;
@@ -245,7 +245,7 @@ static void macvtap_put_queue(struct macvtap_queue *q)
if (vlan) {
if (q->enabled)
- BUG_ON(macvtap_disable_queue(q));
+ BUG_ON(tap_disable_queue(q));
vlan->numqueues--;
RCU_INIT_POINTER(q->vlan, NULL);
@@ -266,11 +266,11 @@ static void macvtap_put_queue(struct macvtap_queue *q)
* Cache vlan->numvtaps since it can become zero during the execution
* of this function.
*/
-static struct macvtap_queue *macvtap_get_queue(struct net_device *dev,
- struct sk_buff *skb)
+static struct tap_queue *tap_get_queue(struct net_device *dev,
+ struct sk_buff *skb)
{
struct macvlan_dev *vlan = netdev_priv(dev);
- struct macvtap_queue *tap = NULL;
+ struct tap_queue *tap = NULL;
/* Access to taps array is protected by rcu, but access to numvtaps
* isn't. Below we use it to lookup a queue, but treat it as a hint
* and validate that the result isn't NULL - in case we are
@@ -313,10 +313,10 @@ out:
* that it holds on all queues and safely set the pointer
* from the queues to NULL.
*/
-void macvtap_del_queues(struct net_device *dev)
+void tap_del_queues(struct net_device *dev)
{
struct macvlan_dev *vlan = netdev_priv(dev);
- struct macvtap_queue *q, *tmp;
+ struct tap_queue *q, *tmp;
ASSERT_RTNL();
list_for_each_entry_safe(q, tmp, &vlan->queue_list, next) {
@@ -329,23 +329,23 @@ void macvtap_del_queues(struct net_device *dev)
}
BUG_ON(vlan->numvtaps);
BUG_ON(vlan->numqueues);
- /* guarantee that any future macvtap_set_queue will fail */
- vlan->numvtaps = MAX_MACVTAP_QUEUES;
+ /* guarantee that any future tap_set_queue will fail */
+ vlan->numvtaps = MAX_TAP_QUEUES;
}
-rx_handler_result_t macvtap_handle_frame(struct sk_buff **pskb)
+rx_handler_result_t tap_handle_frame(struct sk_buff **pskb)
{
struct sk_buff *skb = *pskb;
struct net_device *dev = skb->dev;
struct macvlan_dev *vlan;
- struct macvtap_queue *q;
+ struct tap_queue *q;
netdev_features_t features = TAP_FEATURES;
- vlan = macvtap_get_vlan_rcu(dev);
+ vlan = tap_get_vlan_rcu(dev);
if (!vlan)
return RX_HANDLER_PASS;
- q = macvtap_get_queue(dev, skb);
+ q = tap_get_queue(dev, skb);
if (!q)
return RX_HANDLER_PASS;
@@ -409,23 +409,23 @@ drop:
return RX_HANDLER_CONSUMED;
}
-int macvtap_get_minor(struct macvlan_dev *vlan)
+int tap_get_minor(struct macvlan_dev *vlan)
{
int retval = -ENOMEM;
mutex_lock(&minor_lock);
- retval = idr_alloc(&minor_idr, vlan, 1, MACVTAP_NUM_DEVS, GFP_KERNEL);
+ retval = idr_alloc(&minor_idr, vlan, 1, TAP_NUM_DEVS, GFP_KERNEL);
if (retval >= 0) {
vlan->minor = retval;
} else if (retval == -ENOSPC) {
- netdev_err(vlan->dev, "Too many macvtap devices\n");
+ netdev_err(vlan->dev, "Too many tap devices\n");
retval = -EINVAL;
}
mutex_unlock(&minor_lock);
return retval < 0 ? retval : 0;
}
-void macvtap_free_minor(struct macvlan_dev *vlan)
+void tap_free_minor(struct macvlan_dev *vlan)
{
mutex_lock(&minor_lock);
if (vlan->minor) {
@@ -435,7 +435,7 @@ void macvtap_free_minor(struct macvlan_dev *vlan)
mutex_unlock(&minor_lock);
}
-static struct net_device *dev_get_by_macvtap_minor(int minor)
+static struct net_device *dev_get_by_tap_minor(int minor)
{
struct net_device *dev = NULL;
struct macvlan_dev *vlan;
@@ -450,7 +450,7 @@ static struct net_device *dev_get_by_macvtap_minor(int minor)
return dev;
}
-static void macvtap_sock_write_space(struct sock *sk)
+static void tap_sock_write_space(struct sock *sk)
{
wait_queue_head_t *wqueue;
@@ -463,28 +463,28 @@ static void macvtap_sock_write_space(struct sock *sk)
wake_up_interruptible_poll(wqueue, POLLOUT | POLLWRNORM | POLLWRBAND);
}
-static void macvtap_sock_destruct(struct sock *sk)
+static void tap_sock_destruct(struct sock *sk)
{
- struct macvtap_queue *q = container_of(sk, struct macvtap_queue, sk);
+ struct tap_queue *q = container_of(sk, struct tap_queue, sk);
skb_array_cleanup(&q->skb_array);
}
-static int macvtap_open(struct inode *inode, struct file *file)
+static int tap_open(struct inode *inode, struct file *file)
{
struct net *net = current->nsproxy->net_ns;
struct net_device *dev;
- struct macvtap_queue *q;
+ struct tap_queue *q;
int err = -ENODEV;
rtnl_lock();
- dev = dev_get_by_macvtap_minor(iminor(inode));
+ dev = dev_get_by_tap_minor(iminor(inode));
if (!dev)
goto err;
err = -ENOMEM;
- q = (struct macvtap_queue *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL,
- &macvtap_proto, 0);
+ q = (struct tap_queue *)sk_alloc(net, AF_UNSPEC, GFP_KERNEL,
+ &tap_proto, 0);
if (!q)
goto err;
@@ -493,15 +493,15 @@ static int macvtap_open(struct inode *inode, struct file *file)
q->sock.type = SOCK_RAW;
q->sock.state = SS_CONNECTED;
q->sock.file = file;
- q->sock.ops = &macvtap_socket_ops;
+ q->sock.ops = &tap_socket_ops;
sock_init_data(&q->sock, &q->sk);
- q->sk.sk_write_space = macvtap_sock_write_space;
- q->sk.sk_destruct = macvtap_sock_destruct;
+ q->sk.sk_write_space = tap_sock_write_space;
+ q->sk.sk_destruct = tap_sock_destruct;
q->flags = IFF_VNET_HDR | IFF_NO_PI | IFF_TAP;
q->vnet_hdr_sz = sizeof(struct virtio_net_hdr);
/*
- * so far only KVM virtio_net uses macvtap, enable zero copy between
+ * so far only KVM virtio_net uses tap, enable zero copy between
* guest kernel and host kernel when lower device supports zerocopy
*
* The macvlan supports zerocopy iff the lower device supports zero
@@ -514,7 +514,7 @@ static int macvtap_open(struct inode *inode, struct file *file)
if (skb_array_init(&q->skb_array, dev->tx_queue_len, GFP_KERNEL))
goto err_array;
- err = macvtap_set_queue(dev, file, q);
+ err = tap_set_queue(dev, file, q);
if (err)
goto err_queue;
@@ -535,16 +535,16 @@ err:
return err;
}
-static int macvtap_release(struct inode *inode, struct file *file)
+static int tap_release(struct inode *inode, struct file *file)
{
- struct macvtap_queue *q = file->private_data;
- macvtap_put_queue(q);
+ struct tap_queue *q = file->private_data;
+ tap_put_queue(q);
return 0;
}
-static unsigned int macvtap_poll(struct file *file, poll_table * wait)
+static unsigned int tap_poll(struct file *file, poll_table *wait)
{
- struct macvtap_queue *q = file->private_data;
+ struct tap_queue *q = file->private_data;
unsigned int mask = POLLERR;
if (!q)
@@ -565,8 +565,8 @@ out:
return mask;
}
-static inline struct sk_buff *macvtap_alloc_skb(struct sock *sk, size_t prepad,
- size_t len, size_t linear,
+static inline struct sk_buff *tap_alloc_skb(struct sock *sk, size_t prepad,
+ size_t len, size_t linear,
int noblock, int *err)
{
struct sk_buff *skb;
@@ -589,13 +589,13 @@ static inline struct sk_buff *macvtap_alloc_skb(struct sock *sk, size_t prepad,
}
/* Neighbour code has some assumptions on HH_DATA_MOD alignment */
-#define MACVTAP_RESERVE HH_DATA_OFF(ETH_HLEN)
+#define TAP_RESERVE HH_DATA_OFF(ETH_HLEN)
/* Get packet from user space buffer */
-static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
- struct iov_iter *from, int noblock)
+static ssize_t tap_get_user(struct tap_queue *q, struct msghdr *m,
+ struct iov_iter *from, int noblock)
{
- int good_linear = SKB_MAX_HEAD(MACVTAP_RESERVE);
+ int good_linear = SKB_MAX_HEAD(TAP_RESERVE);
struct sk_buff *skb;
struct macvlan_dev *vlan;
unsigned long total_len = iov_iter_count(from);
@@ -621,14 +621,14 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
goto err;
iov_iter_advance(from, vnet_hdr_len - sizeof(vnet_hdr));
if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) &&
- macvtap16_to_cpu(q, vnet_hdr.csum_start) +
- macvtap16_to_cpu(q, vnet_hdr.csum_offset) + 2 >
- macvtap16_to_cpu(q, vnet_hdr.hdr_len))
- vnet_hdr.hdr_len = cpu_to_macvtap16(q,
- macvtap16_to_cpu(q, vnet_hdr.csum_start) +
- macvtap16_to_cpu(q, vnet_hdr.csum_offset) + 2);
+ tap16_to_cpu(q, vnet_hdr.csum_start) +
+ tap16_to_cpu(q, vnet_hdr.csum_offset) + 2 >
+ tap16_to_cpu(q, vnet_hdr.hdr_len))
+ vnet_hdr.hdr_len = cpu_to_tap16(q,
+ tap16_to_cpu(q, vnet_hdr.csum_start) +
+ tap16_to_cpu(q, vnet_hdr.csum_offset) + 2);
err = -EINVAL;
- if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > len)
+ if (tap16_to_cpu(q, vnet_hdr.hdr_len) > len)
goto err;
}
@@ -640,7 +640,7 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
struct iov_iter i;
copylen = vnet_hdr.hdr_len ?
- macvtap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN;
+ tap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN;
if (copylen > good_linear)
copylen = good_linear;
else if (copylen < ETH_HLEN)
@@ -654,15 +654,15 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
if (!zerocopy) {
copylen = len;
- linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);
+ linear = tap16_to_cpu(q, vnet_hdr.hdr_len);
if (linear > good_linear)
linear = good_linear;
else if (linear < ETH_HLEN)
linear = ETH_HLEN;
}
- skb = macvtap_alloc_skb(&q->sk, MACVTAP_RESERVE, copylen,
- linear, noblock, &err);
+ skb = tap_alloc_skb(&q->sk, TAP_RESERVE, copylen,
+ linear, noblock, &err);
if (!skb)
goto err;
@@ -680,7 +680,7 @@ static ssize_t macvtap_get_user(struct macvtap_queue *q, struct msghdr *m,
if (vnet_hdr_len) {
err = virtio_net_hdr_to_skb(skb, &vnet_hdr,
- macvtap_is_little_endian(q));
+ tap_is_little_endian(q));
if (err)
goto err_kfree;
}
@@ -728,18 +728,18 @@ err:
return err;
}
-static ssize_t macvtap_write_iter(struct kiocb *iocb, struct iov_iter *from)
+static ssize_t tap_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct file *file = iocb->ki_filp;
- struct macvtap_queue *q = file->private_data;
+ struct tap_queue *q = file->private_data;
- return macvtap_get_user(q, NULL, from, file->f_flags & O_NONBLOCK);
+ return tap_get_user(q, NULL, from, file->f_flags & O_NONBLOCK);
}
/* Put packet to the user space buffer */
-static ssize_t macvtap_put_user(struct macvtap_queue *q,
- const struct sk_buff *skb,
- struct iov_iter *iter)
+static ssize_t tap_put_user(struct tap_queue *q,
+ const struct sk_buff *skb,
+ struct iov_iter *iter)
{
int ret;
int vnet_hdr_len = 0;
@@ -753,7 +753,7 @@ static ssize_t macvtap_put_user(struct macvtap_queue *q,
return -EINVAL;
if (virtio_net_hdr_from_skb(skb, &vnet_hdr,
- macvtap_is_little_endian(q), true))
+ tap_is_little_endian(q), true))
BUG();
if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) !=
@@ -792,9 +792,9 @@ done:
return ret ? ret : total;
}
-static ssize_t macvtap_do_read(struct macvtap_queue *q,
- struct iov_iter *to,
- int noblock)
+static ssize_t tap_do_read(struct tap_queue *q,
+ struct iov_iter *to,
+ int noblock)
{
DEFINE_WAIT(wait);
struct sk_buff *skb;
@@ -827,7 +827,7 @@ static ssize_t macvtap_do_read(struct macvtap_queue *q,
finish_wait(sk_sleep(&q->sk), &wait);
if (skb) {
- ret = macvtap_put_user(q, skb, to);
+ ret = tap_put_user(q, skb, to);
if (unlikely(ret < 0))
kfree_skb(skb);
else
@@ -836,20 +836,20 @@ static ssize_t macvtap_do_read(struct macvtap_queue *q,
return ret;
}
-static ssize_t macvtap_read_iter(struct kiocb *iocb, struct iov_iter *to)
+static ssize_t tap_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct file *file = iocb->ki_filp;
- struct macvtap_queue *q = file->private_data;
+ struct tap_queue *q = file->private_data;
ssize_t len = iov_iter_count(to), ret;
- ret = macvtap_do_read(q, to, file->f_flags & O_NONBLOCK);
+ ret = tap_do_read(q, to, file->f_flags & O_NONBLOCK);
ret = min_t(ssize_t, ret, len);
if (ret > 0)
iocb->ki_pos = ret;
return ret;
}
-static struct macvlan_dev *macvtap_get_vlan(struct macvtap_queue *q)
+static struct macvlan_dev *tap_get_vlan(struct tap_queue *q)
{
struct macvlan_dev *vlan;
@@ -861,33 +861,33 @@ static struct macvlan_dev *macvtap_get_vlan(struct macvtap_queue *q)
return vlan;
}
-static void macvtap_put_vlan(struct macvlan_dev *vlan)
+static void tap_put_vlan(struct macvlan_dev *vlan)
{
dev_put(vlan->dev);
}
-static int macvtap_ioctl_set_queue(struct file *file, unsigned int flags)
+static int tap_ioctl_set_queue(struct file *file, unsigned int flags)
{
- struct macvtap_queue *q = file->private_data;
+ struct tap_queue *q = file->private_data;
struct macvlan_dev *vlan;
int ret;
- vlan = macvtap_get_vlan(q);
+ vlan = tap_get_vlan(q);
if (!vlan)
return -EINVAL;
if (flags & IFF_ATTACH_QUEUE)
- ret = macvtap_enable_queue(vlan->dev, file, q);
+ ret = tap_enable_queue(vlan->dev, file, q);
else if (flags & IFF_DETACH_QUEUE)
- ret = macvtap_disable_queue(q);
+ ret = tap_disable_queue(q);
else
ret = -EINVAL;
- macvtap_put_vlan(vlan);
+ tap_put_vlan(vlan);
return ret;
}
-static int set_offload(struct macvtap_queue *q, unsigned long arg)
+static int set_offload(struct tap_queue *q, unsigned long arg)
{
struct macvlan_dev *vlan;
netdev_features_t features;
@@ -919,7 +919,7 @@ static int set_offload(struct macvtap_queue *q, unsigned long arg)
* setting the TSO bit means that the userspace wants to
* accept TSO frames and turning it off means that user space
* does not support TSO.
- * For macvtap, we have to invert it to mean the same thing.
+ * For tap, we have to invert it to mean the same thing.
* When user space turns off TSO, we turn off GSO/LRO so that
* user-space will not receive TSO frames.
*/
@@ -941,10 +941,10 @@ static int set_offload(struct macvtap_queue *q, unsigned long arg)
/*
* provide compatibility with generic tun/tap interface
*/
-static long macvtap_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
+static long tap_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
- struct macvtap_queue *q = file->private_data;
+ struct tap_queue *q = file->private_data;
struct macvlan_dev *vlan;
void __user *argp = (void __user *)arg;
struct ifreq __user *ifr = argp;
@@ -962,16 +962,16 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
return -EFAULT;
ret = 0;
- if ((u & ~MACVTAP_FEATURES) != (IFF_NO_PI | IFF_TAP))
+ if ((u & ~TAP_IFFEATURES) != (IFF_NO_PI | IFF_TAP))
ret = -EINVAL;
else
- q->flags = (q->flags & ~MACVTAP_FEATURES) | u;
+ q->flags = (q->flags & ~TAP_IFFEATURES) | u;
return ret;
case TUNGETIFF:
rtnl_lock();
- vlan = macvtap_get_vlan(q);
+ vlan = tap_get_vlan(q);
if (!vlan) {
rtnl_unlock();
return -ENOLINK;
@@ -982,7 +982,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
if (copy_to_user(&ifr->ifr_name, vlan->dev->name, IFNAMSIZ) ||
put_user(u, &ifr->ifr_flags))
ret = -EFAULT;
- macvtap_put_vlan(vlan);
+ tap_put_vlan(vlan);
rtnl_unlock();
return ret;
@@ -990,12 +990,12 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
if (get_user(u, &ifr->ifr_flags))
return -EFAULT;
rtnl_lock();
- ret = macvtap_ioctl_set_queue(file, u);
+ ret = tap_ioctl_set_queue(file, u);
rtnl_unlock();
return ret;
case TUNGETFEATURES:
- if (put_user(IFF_TAP | IFF_NO_PI | MACVTAP_FEATURES, up))
+ if (put_user(IFF_TAP | IFF_NO_PI | TAP_IFFEATURES, up))
return -EFAULT;
return 0;
@@ -1022,7 +1022,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
return 0;
case TUNGETVNETLE:
- s = !!(q->flags & MACVTAP_VNET_LE);
+ s = !!(q->flags & TAP_VNET_LE);
if (put_user(s, sp))
return -EFAULT;
return 0;
@@ -1031,16 +1031,16 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
if (get_user(s, sp))
return -EFAULT;
if (s)
- q->flags |= MACVTAP_VNET_LE;
+ q->flags |= TAP_VNET_LE;
else
- q->flags &= ~MACVTAP_VNET_LE;
+ q->flags &= ~TAP_VNET_LE;
return 0;
case TUNGETVNETBE:
- return macvtap_get_vnet_be(q, sp);
+ return tap_get_vnet_be(q, sp);
case TUNSETVNETBE:
- return macvtap_set_vnet_be(q, sp);
+ return tap_set_vnet_be(q, sp);
case TUNSETOFFLOAD:
/* let the user check for future flags */
@@ -1055,7 +1055,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
case SIOCGIFHWADDR:
rtnl_lock();
- vlan = macvtap_get_vlan(q);
+ vlan = tap_get_vlan(q);
if (!vlan) {
rtnl_unlock();
return -ENOLINK;
@@ -1066,7 +1066,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
copy_to_user(&ifr->ifr_hwaddr.sa_data, vlan->dev->dev_addr, ETH_ALEN) ||
put_user(u, &ifr->ifr_hwaddr.sa_family))
ret = -EFAULT;
- macvtap_put_vlan(vlan);
+ tap_put_vlan(vlan);
rtnl_unlock();
return ret;
@@ -1074,13 +1074,13 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
if (copy_from_user(&sa, &ifr->ifr_hwaddr, sizeof(sa)))
return -EFAULT;
rtnl_lock();
- vlan = macvtap_get_vlan(q);
+ vlan = tap_get_vlan(q);
if (!vlan) {
rtnl_unlock();
return -ENOLINK;
}
ret = dev_set_mac_address(vlan->dev, &sa);
- macvtap_put_vlan(vlan);
+ tap_put_vlan(vlan);
rtnl_unlock();
return ret;
@@ -1090,42 +1090,42 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
}
#ifdef CONFIG_COMPAT
-static long macvtap_compat_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
+static long tap_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
- return macvtap_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
+ return tap_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
}
#endif
-const struct file_operations macvtap_fops = {
+const struct file_operations tap_fops = {
.owner = THIS_MODULE,
- .open = macvtap_open,
- .release = macvtap_release,
- .read_iter = macvtap_read_iter,
- .write_iter = macvtap_write_iter,
- .poll = macvtap_poll,
+ .open = tap_open,
+ .release = tap_release,
+ .read_iter = tap_read_iter,
+ .write_iter = tap_write_iter,
+ .poll = tap_poll,
.llseek = no_llseek,
- .unlocked_ioctl = macvtap_ioctl,
+ .unlocked_ioctl = tap_ioctl,
#ifdef CONFIG_COMPAT
- .compat_ioctl = macvtap_compat_ioctl,
+ .compat_ioctl = tap_compat_ioctl,
#endif
};
-static int macvtap_sendmsg(struct socket *sock, struct msghdr *m,
- size_t total_len)
+static int tap_sendmsg(struct socket *sock, struct msghdr *m,
+ size_t total_len)
{
- struct macvtap_queue *q = container_of(sock, struct macvtap_queue, sock);
- return macvtap_get_user(q, m, &m->msg_iter, m->msg_flags & MSG_DONTWAIT);
+ struct tap_queue *q = container_of(sock, struct tap_queue, sock);
+ return tap_get_user(q, m, &m->msg_iter, m->msg_flags & MSG_DONTWAIT);
}
-static int macvtap_recvmsg(struct socket *sock, struct msghdr *m,
- size_t total_len, int flags)
+static int tap_recvmsg(struct socket *sock, struct msghdr *m,
+ size_t total_len, int flags)
{
- struct macvtap_queue *q = container_of(sock, struct macvtap_queue, sock);
+ struct tap_queue *q = container_of(sock, struct tap_queue, sock);
int ret;
if (flags & ~(MSG_DONTWAIT|MSG_TRUNC))
return -EINVAL;
- ret = macvtap_do_read(q, &m->msg_iter, flags & MSG_DONTWAIT);
+ ret = tap_do_read(q, &m->msg_iter, flags & MSG_DONTWAIT);
if (ret > total_len) {
m->msg_flags |= MSG_TRUNC;
ret = flags & MSG_TRUNC ? ret : total_len;
@@ -1133,40 +1133,40 @@ static int macvtap_recvmsg(struct socket *sock, struct msghdr *m,
return ret;
}
-static int macvtap_peek_len(struct socket *sock)
+static int tap_peek_len(struct socket *sock)
{
- struct macvtap_queue *q = container_of(sock, struct macvtap_queue,
+ struct tap_queue *q = container_of(sock, struct tap_queue,
sock);
return skb_array_peek_len(&q->skb_array);
}
/* Ops structure to mimic raw sockets with tun */
-static const struct proto_ops macvtap_socket_ops = {
- .sendmsg = macvtap_sendmsg,
- .recvmsg = macvtap_recvmsg,
- .peek_len = macvtap_peek_len,
+static const struct proto_ops tap_socket_ops = {
+ .sendmsg = tap_sendmsg,
+ .recvmsg = tap_recvmsg,
+ .peek_len = tap_peek_len,
};
/* Get an underlying socket object from tun file. Returns error unless file is
* attached to a device. The returned object works like a packet socket, it
* can be used for sock_sendmsg/sock_recvmsg. The caller is responsible for
* holding a reference to the file for as long as the socket is in use. */
-struct socket *macvtap_get_socket(struct file *file)
+struct socket *tap_get_socket(struct file *file)
{
- struct macvtap_queue *q;
- if (file->f_op != &macvtap_fops)
+ struct tap_queue *q;
+ if (file->f_op != &tap_fops)
return ERR_PTR(-EINVAL);
q = file->private_data;
if (!q)
return ERR_PTR(-EBADFD);
return &q->sock;
}
-EXPORT_SYMBOL_GPL(macvtap_get_socket);
+EXPORT_SYMBOL_GPL(tap_get_socket);
-int macvtap_queue_resize(struct macvlan_dev *vlan)
+int tap_queue_resize(struct macvlan_dev *vlan)
{
struct net_device *dev = vlan->dev;
- struct macvtap_queue *q;
+ struct tap_queue *q;
struct skb_array **arrays;
int n = vlan->numqueues;
int ret, i = 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 14:10:54 +0000