diff options
| -rw-r--r-- | drivers/net/tun.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index acf96f262488..8a9a29031bd8 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -298,17 +298,21 @@ static bool tun_napi_frags_enabled(const struct tun_file *tfile) return tfile->napi_frags_enabled; } -#ifdef CONFIG_TUN_VNET_CROSS_LE static inline bool tun_legacy_is_little_endian(struct tun_struct *tun) { - return tun->flags & TUN_VNET_BE ? false : - virtio_legacy_is_little_endian(); + bool be = IS_ENABLED(CONFIG_TUN_VNET_CROSS_LE) && + (tun->flags & TUN_VNET_BE); + + return !be && virtio_legacy_is_little_endian(); } static long tun_get_vnet_be(struct tun_struct *tun, int __user *argp) { int be = !!(tun->flags & TUN_VNET_BE); + if (!IS_ENABLED(CONFIG_TUN_VNET_CROSS_LE)) + return -EINVAL; + if (put_user(be, argp)) return -EFAULT; @@ -319,6 +323,9 @@ static long tun_set_vnet_be(struct tun_struct *tun, int __user *argp) { int be; + if (!IS_ENABLED(CONFIG_TUN_VNET_CROSS_LE)) + return -EINVAL; + if (get_user(be, argp)) return -EFAULT; @@ -329,22 +336,6 @@ static long tun_set_vnet_be(struct tun_struct *tun, int __user *argp) return 0; } -#else -static inline bool tun_legacy_is_little_endian(struct tun_struct *tun) -{ - return virtio_legacy_is_little_endian(); -} - -static long tun_get_vnet_be(struct tun_struct *tun, int __user *argp) -{ - return -EINVAL; -} - -static long tun_set_vnet_be(struct tun_struct *tun, int __user *argp) -{ - return -EINVAL; -} -#endif /* CONFIG_TUN_VNET_CROSS_LE */ static inline bool tun_is_little_endian(struct tun_struct *tun) { |