diff options
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index c36a17aafcf3..bb1f1da2b8a7 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2041,7 +2041,7 @@ gso: rcu_read_lock_bh(); txq = dev_pick_tx(dev, skb); - q = rcu_dereference(txq->qdisc); + q = rcu_dereference_bh(txq->qdisc); #ifdef CONFIG_NET_CLS_ACT skb->tc_verd = SET_TC_AT(skb->tc_verd, AT_EGRESS); @@ -2761,7 +2761,7 @@ gro_result_t napi_frags_finish(struct napi_struct *napi, struct sk_buff *skb, switch (ret) { case GRO_NORMAL: case GRO_HELD: - skb->protocol = eth_type_trans(skb, napi->dev); + skb->protocol = eth_type_trans(skb, skb->dev); if (ret == GRO_HELD) skb_gro_pull(skb, -ETH_HLEN); @@ -4771,21 +4771,23 @@ static void net_set_todo(struct net_device *dev) static void rollback_registered_many(struct list_head *head) { - struct net_device *dev; + struct net_device *dev, *tmp; BUG_ON(dev_boot_phase); ASSERT_RTNL(); - list_for_each_entry(dev, head, unreg_list) { + list_for_each_entry_safe(dev, tmp, head, unreg_list) { /* Some devices call without registering - * for initialization unwind. + * for initialization unwind. Remove those + * devices and proceed with the remaining. */ if (dev->reg_state == NETREG_UNINITIALIZED) { pr_debug("unregister_netdevice: device %s/%p never " "was registered\n", dev->name, dev); WARN_ON(1); - return; + list_del(&dev->unreg_list); + continue; } BUG_ON(dev->reg_state != NETREG_REGISTERED); @@ -5033,6 +5035,11 @@ int register_netdevice(struct net_device *dev) rollback_registered(dev); dev->reg_state = NETREG_UNREGISTERED; } + /* + * Prevent userspace races by waiting until the network + * device is fully setup before sending notifications. + */ + rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); out: return ret; @@ -5595,6 +5602,12 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char /* Notify protocols, that a new device appeared. */ call_netdevice_notifiers(NETDEV_REGISTER, dev); + /* + * Prevent userspace races by waiting until the network + * device is fully setup before sending notifications. + */ + rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); + synchronize_net(); err = 0; out: |