Merge commit 'v2.6.26' into bkl-removal

[linux-2.6-omap-h63xx.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 4c0c5972a489961ac323318c533cf6a09d388a77..eba1271b9735cec24b5a9b986b9958ee95337332 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -314,6 +314,21 @@ static __inline__ ssize_t tun_get_user(struct tun_struct *tun, struct iovec *iv,
 
        switch (tun->flags & TUN_TYPE_MASK) {
        case TUN_TUN_DEV:
+               if (tun->flags & TUN_NO_PI) {
+                       switch (skb->data[0] & 0xf0) {
+                       case 0x40:
+                               pi.proto = htons(ETH_P_IP);
+                               break;
+                       case 0x60:
+                               pi.proto = htons(ETH_P_IPV6);
+                               break;
+                       default:
+                               tun->dev->stats.rx_dropped++;
+                               kfree_skb(skb);
+                               return -EINVAL;
+                       }
+               }
+
                skb_reset_mac_header(skb);
                skb->protocol = pi.proto;
                skb->dev = tun->dev;
@@ -588,6 +603,12 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr)
        tun->attached = 1;
        get_net(dev_net(tun->dev));
 
+       /* Make sure persistent devices do not get stuck in
+        * xoff state.
+        */
+       if (netif_running(tun->dev))
+               netif_wake_queue(tun->dev);
+
        strcpy(ifr->ifr_name, tun->dev->name);
        return 0;