#include <linux/err.h>
#include <linux/ctype.h>
#include <linux/if_arp.h>
+#include <linux/if_vlan.h>
#include "net-sysfs.h"
for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
if (s[i].name[0] == '\0' || s[i].name[0] == ' ') {
memset(s[i].name, 0, sizeof(s[i].name));
- strcpy(s[i].name, name);
+ strlcpy(s[i].name, name, IFNAMSIZ);
memcpy(&s[i].map, map, sizeof(s[i].map));
break;
}
for (i = 0; i < NETDEV_BOOT_SETUP_MAX; i++) {
if (s[i].name[0] != '\0' && s[i].name[0] != ' ' &&
- !strncmp(dev->name, s[i].name, strlen(s[i].name))) {
+ !strcmp(dev->name, s[i].name)) {
dev->irq = s[i].map.irq;
dev->base_addr = s[i].map.base_addr;
dev->mem_start = s[i].map.mem_start;
strlcpy(dev->name, newname, IFNAMSIZ);
rollback:
- device_rename(&dev->dev, dev->name);
+ err = device_rename(&dev->dev, dev->name);
+ if (err) {
+ memcpy(dev->name, oldname, IFNAMSIZ);
+ return err;
+ }
write_lock_bh(&dev_base_lock);
hlist_del(&dev->name_hlist);
{
int ret = 0;
+ ASSERT_RTNL();
+
/*
* Is it already up?
*/
*/
int dev_close(struct net_device *dev)
{
+ ASSERT_RTNL();
+
might_sleep();
if (!(dev->flags & IFF_UP))
}
EXPORT_SYMBOL(netif_device_attach);
+static bool can_checksum_protocol(unsigned long features, __be16 protocol)
+{
+ return ((features & NETIF_F_GEN_CSUM) ||
+ ((features & NETIF_F_IP_CSUM) &&
+ protocol == htons(ETH_P_IP)) ||
+ ((features & NETIF_F_IPV6_CSUM) &&
+ protocol == htons(ETH_P_IPV6)));
+}
+
+static bool dev_can_checksum(struct net_device *dev, struct sk_buff *skb)
+{
+ if (can_checksum_protocol(dev->features, skb->protocol))
+ return true;
+
+ if (skb->protocol == htons(ETH_P_8021Q)) {
+ struct vlan_ethhdr *veh = (struct vlan_ethhdr *)skb->data;
+ if (can_checksum_protocol(dev->features & dev->vlan_features,
+ veh->h_vlan_encapsulated_proto))
+ return true;
+ }
+
+ return false;
+}
/*
* Invalidate hardware checksum when packet is to be mangled, and
if (skb->ip_summed == CHECKSUM_PARTIAL) {
skb_set_transport_header(skb, skb->csum_start -
skb_headroom(skb));
-
- if (!(dev->features & NETIF_F_GEN_CSUM) &&
- !((dev->features & NETIF_F_IP_CSUM) &&
- skb->protocol == htons(ETH_P_IP)) &&
- !((dev->features & NETIF_F_IPV6_CSUM) &&
- skb->protocol == htons(ETH_P_IPV6)))
- if (skb_checksum_help(skb))
- goto out_kfree_skb;
+ if (!dev_can_checksum(dev, skb) && skb_checksum_help(skb))
+ goto out_kfree_skb;
}
gso:
rcu_read_lock();
+ /* Don't receive packets in an exiting network namespace */
+ if (!net_alive(dev_net(skb->dev)))
+ goto out;
+
#ifdef CONFIG_NET_CLS_ACT
if (skb->tc_verd & TC_NCLS) {
skb->tc_verd = CLR_TC_NCLS(skb->tc_verd);
/**
* dev_unicast_add - add a secondary unicast address
* @dev: device
- * @addr: address to delete
+ * @addr: address to add
* @alen: length of @addr
*
* Add a secondary unicast address to the device or increase
* Load in the correct multicast list now the flags have changed.
*/
- if (dev->change_rx_flags && (dev->flags ^ flags) & IFF_MULTICAST)
+ if (dev->change_rx_flags && (old_flags ^ flags) & IFF_MULTICAST)
dev->change_rx_flags(dev, IFF_MULTICAST);
dev_set_rx_mode(dev);
rtnl_lock();
for_each_netdev_safe(net, dev, next) {
int err;
+ char fb_name[IFNAMSIZ];
/* Ignore unmoveable devices (i.e. loopback) */
if (dev->features & NETIF_F_NETNS_LOCAL)
continue;
/* Push remaing network devices to init_net */
- err = dev_change_net_namespace(dev, &init_net, "dev%d");
+ snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
+ err = dev_change_net_namespace(dev, &init_net, fb_name);
if (err) {
- printk(KERN_WARNING "%s: failed to move %s to init_net: %d\n",
+ printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n",
__func__, dev->name, err);
- unregister_netdevice(dev);
+ BUG();
}
}
rtnl_unlock();