diff options
Diffstat (limited to 'drivers/net/loopback.c')
| -rw-r--r-- | drivers/net/loopback.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c index e2a06fd996d5..a17d85a331f1 100644 --- a/drivers/net/loopback.c +++ b/drivers/net/loopback.c @@ -77,6 +77,11 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb, skb_orphan(skb); + /* Before queueing this packet to netif_rx(), + * make sure dst is refcounted. + */ + skb_dst_force(skb); + skb->protocol = eth_type_trans(skb, dev); /* it's OK to use per_cpu_ptr() because BHs are off */ @@ -141,6 +146,7 @@ static int loopback_dev_init(struct net_device *dev) static void loopback_dev_free(struct net_device *dev) { + dev_net(dev)->loopback_dev = NULL; free_percpu(dev->lstats); free_netdev(dev); } @@ -157,7 +163,7 @@ static const struct net_device_ops loopback_ops = { */ static void loopback_setup(struct net_device *dev) { - dev->mtu = (16 * 1024) + 20 + 20 + 12; + dev->mtu = 64 * 1024; dev->hard_header_len = ETH_HLEN; /* 14 */ dev->addr_len = ETH_ALEN; /* 6 */ dev->tx_queue_len = 0; @@ -197,6 +203,7 @@ static __net_init int loopback_net_init(struct net *net) if (err) goto out_free_netdev; + BUG_ON(dev->ifindex != LOOPBACK_IFINDEX); net->loopback_dev = dev; return 0; |