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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.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index f042b03..89776c5 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1585,6 +1585,10 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
else
return -EINVAL;
+ if (!!(ifr->ifr_flags & IFF_MULTI_QUEUE) !=
+ !!(tun->flags & TUN_TAP_MQ))
+ return -EINVAL;
+
if (tun_not_capable(tun))
return -EPERM;
err = security_tun_dev_open(tun->security);
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