Merge branch 'v2.6.35'

5 files changed, 56 insertions, 11 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 0ea10f849be..1f466e82ac3 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1488,6 +1488,7 @@ static inline void net_timestamp_check(struct sk_buff *skb)
 int dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
 {
 	skb_orphan(skb);
+	nf_reset(skb);
 
 	if (!(dev->flags & IFF_UP) ||
 	    (skb->len > (dev->mtu + dev->hard_header_len))) {
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 34432b4e96b..ce88293a34e 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -843,7 +843,9 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
 	skb->network_header   += off;
 	if (skb_mac_header_was_set(skb))
 		skb->mac_header += off;
-	skb->csum_start       += nhead;
+	/* Only adjust this if it actually is csum_start rather than csum */
+	if (skb->ip_summed == CHECKSUM_PARTIAL)
+		skb->csum_start += nhead;
 	skb->cloned   = 0;
 	skb->hdr_len  = 0;
 	skb->nohdr    = 0;
@@ -930,7 +932,8 @@ struct sk_buff *skb_copy_expand(const struct sk_buff *skb,
 	copy_skb_header(n, skb);
 
 	off                  = newheadroom - oldheadroom;
-	n->csum_start       += off;
+	if (n->ip_summed == CHECKSUM_PARTIAL)
+		n->csum_start += off;
 #ifdef NET_SKBUFF_DATA_USES_OFFSET
 	n->transport_header += off;
 	n->network_header   += off;
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e1a698df570..784f34d11fd 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1760,7 +1760,10 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
 
 	idev = ipv6_find_idev(dev);
 	if (!idev)
-		return NULL;
+		return ERR_PTR(-ENOBUFS);
+
+	if (idev->cnf.disable_ipv6)
+		return ERR_PTR(-EACCES);
 
 	/* Add default multicast route */
 	addrconf_add_mroute(dev);
@@ -2129,8 +2132,9 @@ static int inet6_addr_add(struct net *net, int ifindex, struct in6_addr *pfx,
 	if (!dev)
 		return -ENODEV;
 
-	if ((idev = addrconf_add_dev(dev)) == NULL)
-		return -ENOBUFS;
+	idev = addrconf_add_dev(dev);
+	if (IS_ERR(idev))
+		return PTR_ERR(idev);
 
 	scope = ipv6_addr_scope(pfx);
 
@@ -2377,7 +2381,7 @@ static void addrconf_dev_config(struct net_device *dev)
 	}
 
 	idev = addrconf_add_dev(dev);
-	if (idev == NULL)
+	if (IS_ERR(idev))
 		return;
 
 	memset(&addr, 0, sizeof(struct in6_addr));
@@ -2468,7 +2472,7 @@ static void addrconf_ip6_tnl_config(struct net_device *dev)
 	ASSERT_RTNL();
 
 	idev = addrconf_add_dev(dev);
-	if (!idev) {
+	if (IS_ERR(idev)) {
 		printk(KERN_DEBUG "init ip6-ip6: add_dev failed\n");
 		return;
 	}
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c7000a6ca37..67ee34f57df 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -632,7 +632,7 @@ static void ieee80211_send_layer2_update(struct sta_info *sta)
 	skb->dev = sta->sdata->dev;
 	skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 	memset(skb->cb, 0, sizeof(skb->cb));
-	netif_rx(skb);
+	netif_rx_ni(skb);
 }
 
 static void sta_apply_parameters(struct ieee80211_local *local,
diff --git a/net/sched/act_mirred.c b/net/sched/act_mirred.c
index c0b6863e3b8..1980b71c283 100644
--- a/net/sched/act_mirred.c
+++ b/net/sched/act_mirred.c
@@ -33,6 +33,7 @@
 static struct tcf_common *tcf_mirred_ht[MIRRED_TAB_MASK + 1];
 static u32 mirred_idx_gen;
 static DEFINE_RWLOCK(mirred_lock);
+static LIST_HEAD(mirred_list);
 
 static struct tcf_hashinfo mirred_hash_info = {
 	.htab	=	tcf_mirred_ht,
@@ -47,7 +48,9 @@ static inline int tcf_mirred_release(struct tcf_mirred *m, int bind)
 			m->tcf_bindcnt--;
 		m->tcf_refcnt--;
 		if(!m->tcf_bindcnt && m->tcf_refcnt <= 0) {
-			dev_put(m->tcfm_dev);
+			list_del(&m->tcfm_list);
+			if (m->tcfm_dev)
+				dev_put(m->tcfm_dev);
 			tcf_hash_destroy(&m->common, &mirred_hash_info);
 			return 1;
 		}
@@ -134,8 +137,10 @@ static int tcf_mirred_init(struct nlattr *nla, struct nlattr *est,
 		m->tcfm_ok_push = ok_push;
 	}
 	spin_unlock_bh(&m->tcf_lock);
-	if (ret == ACT_P_CREATED)
+	if (ret == ACT_P_CREATED) {
+		list_add(&m->tcfm_list, &mirred_list);
 		tcf_hash_insert(pc, &mirred_hash_info);
+	}
 
 	return ret;
 }
@@ -162,9 +167,14 @@ static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
 	m->tcf_tm.lastuse = jiffies;
 
 	dev = m->tcfm_dev;
+	if (!dev) {
+		printk_once(KERN_NOTICE "tc mirred: target device is gone\n");
+		goto out;
+	}
+
 	if (!(dev->flags & IFF_UP)) {
 		if (net_ratelimit())
-			pr_notice("tc mirred to Houston: device %s is gone!\n",
+			pr_notice("tc mirred to Houston: device %s is down\n",
 				  dev->name);
 		goto out;
 	}
@@ -232,6 +242,28 @@ nla_put_failure:
 	return -1;
 }
 
+static int mirred_device_event(struct notifier_block *unused,
+			       unsigned long event, void *ptr)
+{
+	struct net_device *dev = ptr;
+	struct tcf_mirred *m;
+
+	if (event == NETDEV_UNREGISTER)
+		list_for_each_entry(m, &mirred_list, tcfm_list) {
+			if (m->tcfm_dev == dev) {
+				dev_put(dev);
+				m->tcfm_dev = NULL;
+			}
+		}
+
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block mirred_device_notifier = {
+	.notifier_call = mirred_device_event,
+};
+
+
 static struct tc_action_ops act_mirred_ops = {
 	.kind		=	"mirred",
 	.hinfo		=	&mirred_hash_info,
@@ -252,12 +284,17 @@ MODULE_LICENSE("GPL");
 
 static int __init mirred_init_module(void)
 {
+	int err = register_netdevice_notifier(&mirred_device_notifier);
+	if (err)
+		return err;
+
 	pr_info("Mirror/redirect action on\n");
 	return tcf_register_action(&act_mirred_ops);
 }
 
 static void __exit mirred_cleanup_module(void)
 {
+	unregister_netdevice_notifier(&mirred_device_notifier);
 	tcf_unregister_action(&act_mirred_ops);
 }