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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-11 15:39:38 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-11 15:39:38 +0200
commit8af4b3d7044d83c5426da6e45a9c7948bc7fa231 (patch)
tree76e15a6cea6b526fe30c679f6e9bf60b08acf983 /drivers/net/tun.c
parenta5950f2617f71a3dce16520c4907bcdb31e654ba (diff)
parentc2ebf788f927dcca72beead19fab5f5aba79a098 (diff)
Merge branch 'acpi-pm' into pm-sleep
Diffstat (limited to 'drivers/net/tun.c')
-rw-r--r--drivers/net/tun.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 3c9985f29950..5ce580f413b9 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1496,11 +1496,13 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
switch (tun->flags & TUN_TYPE_MASK) {
case IFF_TUN:
if (tun->flags & IFF_NO_PI) {
- switch (skb->data[0] & 0xf0) {
- case 0x40:
+ u8 ip_version = skb->len ? (skb->data[0] >> 4) : 0;
+
+ switch (ip_version) {
+ case 4:
pi.proto = htons(ETH_P_IP);
break;
- case 0x60:
+ case 6:
pi.proto = htons(ETH_P_IPV6);
break;
default: