提交 1cf8e410 编写于 作者: M Michael S. Tsirkin 提交者: David S. Miller

tun: drop broken IFF_VNET_LE

Use TUNSETVNETLE/TUNGETVNETLE instead.
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 5eea84f4
......@@ -110,9 +110,11 @@ do { \
* overload it to mean fasync when stored there.
*/
#define TUN_FASYNC IFF_ATTACH_QUEUE
/* High bits in flags field are unused. */
#define TUN_VNET_LE 0x80000000
#define TUN_FEATURES (IFF_NO_PI | IFF_ONE_QUEUE | IFF_VNET_HDR | \
IFF_VNET_LE | IFF_MULTI_QUEUE)
IFF_MULTI_QUEUE)
#define GOODCOPY_LEN 128
#define FLT_EXACT_COUNT 8
......@@ -208,12 +210,12 @@ struct tun_struct {
static inline u16 tun16_to_cpu(struct tun_struct *tun, __virtio16 val)
{
return __virtio16_to_cpu(tun->flags & IFF_VNET_LE, val);
return __virtio16_to_cpu(tun->flags & TUN_VNET_LE, val);
}
static inline __virtio16 cpu_to_tun16(struct tun_struct *tun, u16 val)
{
return __cpu_to_virtio16(tun->flags & IFF_VNET_LE, val);
return __cpu_to_virtio16(tun->flags & TUN_VNET_LE, val);
}
static inline u32 tun_hashfn(u32 rxhash)
......@@ -1843,6 +1845,7 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
int sndbuf;
int vnet_hdr_sz;
unsigned int ifindex;
int le;
int ret;
if (cmd == TUNSETIFF || cmd == TUNSETQUEUE || _IOC_TYPE(cmd) == 0x89) {
......@@ -2042,6 +2045,23 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
tun->vnet_hdr_sz = vnet_hdr_sz;
break;
case TUNGETVNETLE:
le = !!(tun->flags & TUN_VNET_LE);
if (put_user(le, (int __user *)argp))
ret = -EFAULT;
break;
case TUNSETVNETLE:
if (get_user(le, (int __user *)argp)) {
ret = -EFAULT;
break;
}
if (le)
tun->flags |= TUN_VNET_LE;
else
tun->flags &= ~TUN_VNET_LE;
break;
case TUNATTACHFILTER:
/* Can be set only for TAPs */
ret = -EINVAL;
......
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