struct pcpu_lstats {
unsigned long packets;
unsigned long bytes;
+ unsigned long drops;
};
/*
* The higher levels take care of making this non-reentrant (it's
* called with bh's disabled).
*/
-static int loopback_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t loopback_xmit(struct sk_buff *skb,
+ struct net_device *dev)
{
- struct pcpu_lstats *pcpu_lstats, *lb_stats;
+ struct pcpu_lstats __percpu *pcpu_lstats;
+ struct pcpu_lstats *lb_stats;
+ int len;
skb_orphan(skb);
- skb->protocol = eth_type_trans(skb,dev);
+ skb->protocol = eth_type_trans(skb, dev);
/* it's OK to use per_cpu_ptr() because BHs are off */
- pcpu_lstats = dev->ml_priv;
- lb_stats = per_cpu_ptr(pcpu_lstats, smp_processor_id());
- lb_stats->bytes += skb->len;
- lb_stats->packets++;
+ pcpu_lstats = (void __percpu __force *)dev->ml_priv;
+ lb_stats = this_cpu_ptr(pcpu_lstats);
- netif_rx(skb);
+ len = skb->len;
+ if (likely(netif_rx(skb) == NET_RX_SUCCESS)) {
+ lb_stats->bytes += len;
+ lb_stats->packets++;
+ } else
+ lb_stats->drops++;
- return 0;
+ return NETDEV_TX_OK;
}
-static struct net_device_stats *get_stats(struct net_device *dev)
+static struct net_device_stats *loopback_get_stats(struct net_device *dev)
{
- const struct pcpu_lstats *pcpu_lstats;
+ const struct pcpu_lstats __percpu *pcpu_lstats;
struct net_device_stats *stats = &dev->stats;
unsigned long bytes = 0;
unsigned long packets = 0;
+ unsigned long drops = 0;
int i;
- pcpu_lstats = dev->ml_priv;
+ pcpu_lstats = (void __percpu __force *)dev->ml_priv;
for_each_possible_cpu(i) {
const struct pcpu_lstats *lb_stats;
lb_stats = per_cpu_ptr(pcpu_lstats, i);
bytes += lb_stats->bytes;
packets += lb_stats->packets;
+ drops += lb_stats->drops;
}
stats->rx_packets = packets;
stats->tx_packets = packets;
- stats->rx_bytes = bytes;
- stats->tx_bytes = bytes;
+ stats->rx_dropped = drops;
+ stats->rx_errors = drops;
+ stats->rx_bytes = bytes;
+ stats->tx_bytes = bytes;
return stats;
}
static int loopback_dev_init(struct net_device *dev)
{
- struct pcpu_lstats *lstats;
+ struct pcpu_lstats __percpu *lstats;
lstats = alloc_percpu(struct pcpu_lstats);
if (!lstats)
return -ENOMEM;
- dev->ml_priv = lstats;
+ dev->ml_priv = (void __force *)lstats;
return 0;
}
static void loopback_dev_free(struct net_device *dev)
{
- struct pcpu_lstats *lstats = dev->ml_priv;
+ struct pcpu_lstats __percpu *lstats =
+ (void __percpu __force *)dev->ml_priv;
free_percpu(lstats);
free_netdev(dev);
}
+static const struct net_device_ops loopback_ops = {
+ .ndo_init = loopback_dev_init,
+ .ndo_start_xmit= loopback_xmit,
+ .ndo_get_stats = loopback_get_stats,
+};
+
/*
* The loopback device is special. There is only one instance
* per network namespace.
*/
static void loopback_setup(struct net_device *dev)
{
- dev->get_stats = &get_stats;
dev->mtu = (16 * 1024) + 20 + 20 + 12;
- dev->hard_start_xmit = loopback_xmit;
dev->hard_header_len = ETH_HLEN; /* 14 */
dev->addr_len = ETH_ALEN; /* 6 */
dev->tx_queue_len = 0;
dev->type = ARPHRD_LOOPBACK; /* 0x0001*/
dev->flags = IFF_LOOPBACK;
+ dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
dev->features = NETIF_F_SG | NETIF_F_FRAGLIST
| NETIF_F_TSO
| NETIF_F_NO_CSUM
| NETIF_F_NETNS_LOCAL;
dev->ethtool_ops = &loopback_ethtool_ops;
dev->header_ops = ð_header_ops;
- dev->init = loopback_dev_init;
- dev->destructor = loopback_dev_free;
+ dev->netdev_ops = &loopback_ops;
+ dev->destructor = loopback_dev_free;
}
/* Setup and register the loopback device. */
out_free_netdev:
free_netdev(dev);
out:
- if (net == &init_net)
+ if (net_eq(net, &init_net))
panic("loopback: Failed to register netdevice: %d\n", err);
return err;
}
-static __net_exit void loopback_net_exit(struct net *net)
-{
- struct net_device *dev = net->loopback_dev;
-
- unregister_netdev(dev);
-}
-
/* Registered in net/core/dev.c */
struct pernet_operations __net_initdata loopback_net_ops = {
.init = loopback_net_init,
- .exit = loopback_net_exit,
};