Merge branch 'linus' into core/rcu

22 files changed, 277 insertions, 121 deletions

diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 9d52ebfc1962..05fafdc2eea3 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -188,10 +188,13 @@ static int br2684_xmit_vcc(struct sk_buff *skb, struct br2684_dev *brdev,
 				return 0;
 			}
 		}
-	} else {
-		skb_push(skb, 2);
-		if (brdev->payload == p_bridged)
+	} else { /* e_vc */
+		if (brdev->payload == p_bridged) {
+			skb_push(skb, 2);
 			memset(skb->data, 0, 2);
+		} else { /* p_routed */
+			skb_pull(skb, ETH_HLEN);
+		}
 	}
 	skb_debug(skb);
 
@@ -377,11 +380,8 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
 				 (skb->data + 6, ethertype_ipv4,
 				  sizeof(ethertype_ipv4)) == 0)
 				skb->protocol = __constant_htons(ETH_P_IP);
-			else {
-				brdev->stats.rx_errors++;
-				dev_kfree_skb(skb);
-				return;
-			}
+			else
+				goto error;
 			skb_pull(skb, sizeof(llc_oui_ipv4));
 			skb_reset_network_header(skb);
 			skb->pkt_type = PACKET_HOST;
@@ -394,44 +394,56 @@ static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)
 			   (memcmp(skb->data, llc_oui_pid_pad, 7) == 0)) {
 			skb_pull(skb, sizeof(llc_oui_pid_pad));
 			skb->protocol = eth_type_trans(skb, net_dev);
-		} else {
-			brdev->stats.rx_errors++;
-			dev_kfree_skb(skb);
-			return;
-		}
+		} else
+			goto error;
 
-	} else {
-		/* first 2 chars should be 0 */
-		if (*((u16 *) (skb->data)) != 0) {
-			brdev->stats.rx_errors++;
-			dev_kfree_skb(skb);
-			return;
+	} else { /* e_vc */
+		if (brdev->payload == p_routed) {
+			struct iphdr *iph;
+
+			skb_reset_network_header(skb);
+			iph = ip_hdr(skb);
+			if (iph->version == 4)
+				skb->protocol = __constant_htons(ETH_P_IP);
+			else if (iph->version == 6)
+				skb->protocol = __constant_htons(ETH_P_IPV6);
+			else
+				goto error;
+			skb->pkt_type = PACKET_HOST;
+		} else { /* p_bridged */
+			/* first 2 chars should be 0 */
+			if (*((u16 *) (skb->data)) != 0)
+				goto error;
+			skb_pull(skb, BR2684_PAD_LEN);
+			skb->protocol = eth_type_trans(skb, net_dev);
 		}
-		skb_pull(skb, BR2684_PAD_LEN + ETH_HLEN);	/* pad, dstmac, srcmac, ethtype */
-		skb->protocol = eth_type_trans(skb, net_dev);
 	}
 
 #ifdef CONFIG_ATM_BR2684_IPFILTER
-	if (unlikely(packet_fails_filter(skb->protocol, brvcc, skb))) {
-		brdev->stats.rx_dropped++;
-		dev_kfree_skb(skb);
-		return;
-	}
+	if (unlikely(packet_fails_filter(skb->protocol, brvcc, skb)))
+		goto dropped;
 #endif /* CONFIG_ATM_BR2684_IPFILTER */
 	skb->dev = net_dev;
 	ATM_SKB(skb)->vcc = atmvcc;	/* needed ? */
 	pr_debug("received packet's protocol: %x\n", ntohs(skb->protocol));
 	skb_debug(skb);
-	if (unlikely(!(net_dev->flags & IFF_UP))) {
-		/* sigh, interface is down */
-		brdev->stats.rx_dropped++;
-		dev_kfree_skb(skb);
-		return;
-	}
+	/* sigh, interface is down? */
+	if (unlikely(!(net_dev->flags & IFF_UP)))
+		goto dropped;
 	brdev->stats.rx_packets++;
 	brdev->stats.rx_bytes += skb->len;
 	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
 	netif_rx(skb);
+	return;
+
+dropped:
+	brdev->stats.rx_dropped++;
+	goto free_skb;
+error:
+	brdev->stats.rx_errors++;
+free_skb:
+	dev_kfree_skb(skb);
+	return;
 }
 
 /*
@@ -518,9 +530,9 @@ static int br2684_regvcc(struct atm_vcc *atmvcc, void __user * arg)
 		struct sk_buff *next = skb->next;
 
 		skb->next = skb->prev = NULL;
+		br2684_push(atmvcc, skb);
 		BRPRIV(skb->dev)->stats.rx_bytes -= skb->len;
 		BRPRIV(skb->dev)->stats.rx_packets--;
-		br2684_push(atmvcc, skb);
 
 		skb = next;
 	}
diff --git a/net/core/dev.c b/net/core/dev.c
index 582963077877..c421a1f8f0b9 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -119,6 +119,7 @@
 #include <linux/err.h>
 #include <linux/ctype.h>
 #include <linux/if_arp.h>
+#include <linux/if_vlan.h>
 
 #include "net-sysfs.h"
 
@@ -1362,6 +1363,29 @@ void netif_device_attach(struct net_device *dev)
 }
 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
@@ -1640,14 +1664,8 @@ int dev_queue_xmit(struct sk_buff *skb)
 	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:
@@ -2059,6 +2077,10 @@ int netif_receive_skb(struct sk_buff *skb)
 
 	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);
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 72b4c184dd84..7c52fe277b62 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -140,6 +140,9 @@ static void cleanup_net(struct work_struct *work)
 	struct pernet_operations *ops;
 	struct net *net;
 
+	/* Be very certain incoming network packets will not find us */
+	rcu_barrier();
+
 	net = container_of(work, struct net, work);
 
 	mutex_lock(&net_mutex);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 045e799d3e1d..ec834480abe7 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -466,9 +466,9 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
 		reqp=&lopt->syn_table[i];
 		while ((req = *reqp) != NULL) {
 			if (time_after_eq(now, req->expires)) {
-				if ((req->retrans < (inet_rsk(req)->acked ? max_retries : thresh)) &&
-				    (inet_rsk(req)->acked ||
-				     !req->rsk_ops->rtx_syn_ack(parent, req))) {
+				if ((req->retrans < thresh ||
+				     (inet_rsk(req)->acked && req->retrans < max_retries))
+				    && !req->rsk_ops->rtx_syn_ack(parent, req)) {
 					unsigned long timeo;
 
 					if (req->retrans++ == 0)
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index 04578593e100..d2a887fc8d9b 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -556,7 +556,6 @@ static void nf_nat_cleanup_conntrack(struct nf_conn *ct)
 
 	spin_lock_bh(&nf_nat_lock);
 	hlist_del_rcu(&nat->bysource);
-	nat->ct = NULL;
 	spin_unlock_bh(&nf_nat_lock);
 }
 
@@ -570,8 +569,8 @@ static void nf_nat_move_storage(void *new, void *old)
 		return;
 
 	spin_lock_bh(&nf_nat_lock);
-	hlist_replace_rcu(&old_nat->bysource, &new_nat->bysource);
 	new_nat->ct = ct;
+	hlist_replace_rcu(&old_nat->bysource, &new_nat->bysource);
 	spin_unlock_bh(&nf_nat_lock);
 }
 
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index e7e091d365ff..37a1ecd9d600 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -934,7 +934,7 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 	      srcp  = inet->num;
 
 	seq_printf(seq, "%4d: %08X:%04X %08X:%04X"
-		" %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d",
+		" %02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
 		i, src, srcp, dest, destp, sp->sk_state,
 		atomic_read(&sp->sk_wmem_alloc),
 		atomic_read(&sp->sk_rmem_alloc),
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 97a230026e13..12695be2c255 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -85,10 +85,6 @@
 int sysctl_tcp_tw_reuse __read_mostly;
 int sysctl_tcp_low_latency __read_mostly;
 
-/* Check TCP sequence numbers in ICMP packets. */
-#define ICMP_MIN_LENGTH 8
-
-void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb);
 
 #ifdef CONFIG_TCP_MD5SIG
 static struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk,
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c
index 584e6d74e3a9..7135279f3f84 100644
--- a/net/ipv4/xfrm4_mode_tunnel.c
+++ b/net/ipv4/xfrm4_mode_tunnel.c
@@ -52,7 +52,7 @@ static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
 		IP_ECN_clear(top_iph);
 
 	top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ?
-			    0 : XFRM_MODE_SKB_CB(skb)->frag_off;
+		0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));
 	ip_select_ident(top_iph, dst->child, NULL);
 
 	top_iph->ttl = dst_metric(dst->child, RTAX_HOPLIMIT);
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c
index 4e5c8615832c..17eb48b8e329 100644
--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -102,6 +102,15 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt
 	if (hdr->version != 6)
 		goto err;
 
+	/*
+	 * RFC4291 2.5.3
+	 * A packet received on an interface with a destination address
+	 * of loopback must be dropped.
+	 */
+	if (!(dev->flags & IFF_LOOPBACK) &&
+	    ipv6_addr_loopback(&hdr->daddr))
+		goto err;
+
 	skb->transport_header = skb->network_header + sizeof(*hdr);
 	IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);
 
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index c042ce19bd14..86e28a75267f 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -345,18 +345,21 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 	case IPV6_DSTOPTS:
 	{
 		struct ipv6_txoptions *opt;
+
+		/* remove any sticky options header with a zero option
+		 * length, per RFC3542.
+		 */
 		if (optlen == 0)
 			optval = NULL;
+		else if (optlen < sizeof(struct ipv6_opt_hdr) ||
+			 optlen & 0x7 || optlen > 8 * 255)
+			goto e_inval;
 
 		/* hop-by-hop / destination options are privileged option */
 		retv = -EPERM;
 		if (optname != IPV6_RTHDR && !capable(CAP_NET_RAW))
 			break;
 
-		if (optlen < sizeof(struct ipv6_opt_hdr) ||
-		    optlen & 0x7 || optlen > 8 * 255)
-			goto e_inval;
-
 		opt = ipv6_renew_options(sk, np->opt, optname,
 					 (struct ipv6_opt_hdr __user *)optval,
 					 optlen);
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 3de6ffdaedf2..32e871a6c25a 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -222,15 +222,18 @@ __ipip6_tunnel_locate_prl(struct ip_tunnel *t, __be32 addr)
 
 }
 
-static int ipip6_tunnel_get_prl(struct ip_tunnel *t, struct ip_tunnel_prl *a)
+static int ipip6_tunnel_get_prl(struct ip_tunnel *t,
+				struct ip_tunnel_prl __user *a)
 {
-	struct ip_tunnel_prl *kp;
+	struct ip_tunnel_prl kprl, *kp;
 	struct ip_tunnel_prl_entry *prl;
 	unsigned int cmax, c = 0, ca, len;
 	int ret = 0;
 
-	cmax = a->datalen / sizeof(*a);
-	if (cmax > 1 && a->addr != htonl(INADDR_ANY))
+	if (copy_from_user(&kprl, a, sizeof(kprl)))
+		return -EFAULT;
+	cmax = kprl.datalen / sizeof(kprl);
+	if (cmax > 1 && kprl.addr != htonl(INADDR_ANY))
 		cmax = 1;
 
 	/* For simple GET or for root users,
@@ -261,26 +264,25 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t, struct ip_tunnel_prl *a)
 	for (prl = t->prl; prl; prl = prl->next) {
 		if (c > cmax)
 			break;
-		if (a->addr != htonl(INADDR_ANY) && prl->addr != a->addr)
+		if (kprl.addr != htonl(INADDR_ANY) && prl->addr != kprl.addr)
 			continue;
 		kp[c].addr = prl->addr;
 		kp[c].flags = prl->flags;
 		c++;
-		if (a->addr != htonl(INADDR_ANY))
+		if (kprl.addr != htonl(INADDR_ANY))
 			break;
 	}
 out:
 	read_unlock(&ipip6_lock);
 
 	len = sizeof(*kp) * c;
-	ret = len ? copy_to_user(a->data, kp, len) : 0;
+	ret = 0;
+	if ((len && copy_to_user(a + 1, kp, len)) || put_user(len, &a->datalen))
+		ret = -EFAULT;
 
 	kfree(kp);
-	if (ret)
-		return -EFAULT;
 
-	a->datalen = len;
-	return 0;
+	return ret;
 }
 
 static int
@@ -873,11 +875,20 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
 		break;
 
 	case SIOCGETPRL:
+		err = -EINVAL;
+		if (dev == sitn->fb_tunnel_dev)
+			goto done;
+		err = -ENOENT;
+		if (!(t = netdev_priv(dev)))
+			goto done;
+		err = ipip6_tunnel_get_prl(t, ifr->ifr_ifru.ifru_data);
+		break;
+
 	case SIOCADDPRL:
 	case SIOCDELPRL:
 	case SIOCCHGPRL:
 		err = -EPERM;
-		if (cmd != SIOCGETPRL && !capable(CAP_NET_ADMIN))
+		if (!capable(CAP_NET_ADMIN))
 			goto done;
 		err = -EINVAL;
 		if (dev == sitn->fb_tunnel_dev)
@@ -890,12 +901,6 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
 			goto done;
 
 		switch (cmd) {
-		case SIOCGETPRL:
-			err = ipip6_tunnel_get_prl(t, &prl);
-			if (!err && copy_to_user(ifr->ifr_ifru.ifru_data,
-						 &prl, sizeof(prl)))
-				err = -EFAULT;
-			break;
 		case SIOCDELPRL:
 			err = ipip6_tunnel_del_prl(t, &prl);
 			break;
@@ -904,8 +909,7 @@ ipip6_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd)
 			err = ipip6_tunnel_add_prl(t, &prl, cmd == SIOCCHGPRL);
 			break;
 		}
-		if (cmd != SIOCGETPRL)
-			netdev_state_change(dev);
+		netdev_state_change(dev);
 		break;
 
 	default:
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 1d7dd54aacef..c80d5899f279 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1132,7 +1132,7 @@ static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
 	ieee80211_tx_handler *handler;
 	struct ieee80211_tx_data tx;
 	ieee80211_tx_result res = TX_DROP, res_prepare;
-	int ret, i;
+	int ret, i, retries = 0;
 
 	WARN_ON(__ieee80211_queue_pending(local, control->queue));
 
@@ -1216,6 +1216,13 @@ retry:
 		if (!__ieee80211_queue_stopped(local, control->queue)) {
 			clear_bit(IEEE80211_LINK_STATE_PENDING,
 				  &local->state[control->queue]);
+			retries++;
+			/*
+			 * Driver bug, it's rejecting packets but
+			 * not stopping queues.
+			 */
+			if (WARN_ON_ONCE(retries > 5))
+				goto drop;
 			goto retry;
 		}
 		memcpy(&store->control, control,
@@ -1562,13 +1569,13 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
 	 * be cloned. This could happen, e.g., with Linux bridge code passing
 	 * us broadcast frames. */
 
-	if (head_need > 0 || skb_header_cloned(skb)) {
+	if (head_need > 0 || skb_cloned(skb)) {
 #if 0
 		printk(KERN_DEBUG "%s: need to reallocate buffer for %d bytes "
 		       "of headroom\n", dev->name, head_need);
 #endif
 
-		if (skb_header_cloned(skb))
+		if (skb_cloned(skb))
 			I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
 		else
 			I802_DEBUG_INC(local->tx_expand_skb_head);
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
index a8bb8e31b1ec..6106cb79060c 100644
--- a/net/mac80211/wext.c
+++ b/net/mac80211/wext.c
@@ -496,7 +496,8 @@ static int ieee80211_ioctl_giwap(struct net_device *dev,
 	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
 	    sdata->vif.type == IEEE80211_IF_TYPE_IBSS) {
-		if (sdata->u.sta.state == IEEE80211_ASSOCIATED) {
+		if (sdata->u.sta.state == IEEE80211_ASSOCIATED ||
+		    sdata->u.sta.state == IEEE80211_IBSS_JOINED) {
 			ap_addr->sa_family = ARPHRD_ETHER;
 			memcpy(&ap_addr->sa_data, sdata->u.sta.bssid, ETH_ALEN);
 			return 0;
diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index dc1598b86004..635b996c8c35 100644
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -673,7 +673,7 @@ int ieee80211_ht_agg_queue_add(struct ieee80211_local *local,
 #ifdef CONFIG_MAC80211_HT_DEBUG
 			if (net_ratelimit())
 				printk(KERN_DEBUG "allocated aggregation queue"
-					" %d tid %d addr %s pool=0x%lX",
+					" %d tid %d addr %s pool=0x%lX\n",
 					i, tid, print_mac(mac, sta->addr),
 					q->qdisc_pool[0]);
 #endif /* CONFIG_MAC80211_HT_DEBUG */
diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c
index bcc19fa4ed1e..8a3f8b34e466 100644
--- a/net/netfilter/nf_conntrack_extend.c
+++ b/net/netfilter/nf_conntrack_extend.c
@@ -59,12 +59,19 @@ nf_ct_ext_create(struct nf_ct_ext **ext, enum nf_ct_ext_id id, gfp_t gfp)
 	if (!*ext)
 		return NULL;
 
+	INIT_RCU_HEAD(&(*ext)->rcu);
 	(*ext)->offset[id] = off;
 	(*ext)->len = len;
 
 	return (void *)(*ext) + off;
 }
 
+static void __nf_ct_ext_free_rcu(struct rcu_head *head)
+{
+	struct nf_ct_ext *ext = container_of(head, struct nf_ct_ext, rcu);
+	kfree(ext);
+}
+
 void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp)
 {
 	struct nf_ct_ext *new;
@@ -106,7 +113,7 @@ void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp)
 					(void *)ct->ext + ct->ext->offset[i]);
 			rcu_read_unlock();
 		}
-		kfree(ct->ext);
+		call_rcu(&ct->ext->rcu, __nf_ct_ext_free_rcu);
 		ct->ext = new;
 	}
 
diff --git a/net/netfilter/nf_conntrack_h323_main.c b/net/netfilter/nf_conntrack_h323_main.c
index 95da1a24aab7..2f83c158934d 100644
--- a/net/netfilter/nf_conntrack_h323_main.c
+++ b/net/netfilter/nf_conntrack_h323_main.c
@@ -619,6 +619,7 @@ static const struct nf_conntrack_expect_policy h245_exp_policy = {
 static struct nf_conntrack_helper nf_conntrack_helper_h245 __read_mostly = {
 	.name			= "H.245",
 	.me			= THIS_MODULE,
+	.tuple.src.l3num	= AF_UNSPEC,
 	.tuple.dst.protonum	= IPPROTO_UDP,
 	.help			= h245_help,
 	.expect_policy		= &h245_exp_policy,
@@ -1765,6 +1766,7 @@ static void __exit nf_conntrack_h323_fini(void)
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_ras[0]);
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_q931[1]);
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_q931[0]);
+	nf_conntrack_helper_unregister(&nf_conntrack_helper_h245);
 	kfree(h323_buffer);
 	pr_debug("nf_ct_h323: fini\n");
 }
@@ -1777,28 +1779,34 @@ static int __init nf_conntrack_h323_init(void)
 	h323_buffer = kmalloc(65536, GFP_KERNEL);
 	if (!h323_buffer)
 		return -ENOMEM;
-	ret = nf_conntrack_helper_register(&nf_conntrack_helper_q931[0]);
+	ret = nf_conntrack_helper_register(&nf_conntrack_helper_h245);
 	if (ret < 0)
 		goto err1;
-	ret = nf_conntrack_helper_register(&nf_conntrack_helper_q931[1]);
+	ret = nf_conntrack_helper_register(&nf_conntrack_helper_q931[0]);
 	if (ret < 0)
 		goto err2;
-	ret = nf_conntrack_helper_register(&nf_conntrack_helper_ras[0]);
+	ret = nf_conntrack_helper_register(&nf_conntrack_helper_q931[1]);
 	if (ret < 0)
 		goto err3;
-	ret = nf_conntrack_helper_register(&nf_conntrack_helper_ras[1]);
+	ret = nf_conntrack_helper_register(&nf_conntrack_helper_ras[0]);
 	if (ret < 0)
 		goto err4;
+	ret = nf_conntrack_helper_register(&nf_conntrack_helper_ras[1]);
+	if (ret < 0)
+		goto err5;
 	pr_debug("nf_ct_h323: init success\n");
 	return 0;
 
-err4:
+err5:
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_ras[0]);
-err3:
+err4:
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_q931[1]);
-err2:
+err3:
 	nf_conntrack_helper_unregister(&nf_conntrack_helper_q931[0]);
+err2:
+	nf_conntrack_helper_unregister(&nf_conntrack_helper_h245);
 err1:
+	kfree(h323_buffer);
 	return ret;
 }
 
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index f5aa23c3e886..3e1191cecaf0 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -444,8 +444,11 @@ static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		if (ops->dumpit == NULL)
 			return -EOPNOTSUPP;
 
-		return netlink_dump_start(genl_sock, skb, nlh,
-					  ops->dumpit, ops->done);
+		genl_unlock();
+		err = netlink_dump_start(genl_sock, skb, nlh,
+					 ops->dumpit, ops->done);
+		genl_lock();
+		return err;
 	}
 
 	if (ops->doit == NULL)
@@ -603,9 +606,6 @@ static int ctrl_dumpfamily(struct sk_buff *skb, struct netlink_callback *cb)
 	int chains_to_skip = cb->args[0];
 	int fams_to_skip = cb->args[1];
 
-	if (chains_to_skip != 0)
-		genl_lock();
-
 	for (i = 0; i < GENL_FAM_TAB_SIZE; i++) {
 		if (i < chains_to_skip)
 			continue;
@@ -623,9 +623,6 @@ static int ctrl_dumpfamily(struct sk_buff *skb, struct netlink_callback *cb)
 	}
 
 errout:
-	if (chains_to_skip != 0)
-		genl_unlock();
-
 	cb->args[0] = i;
 	cb->args[1] = n;
 
@@ -770,7 +767,7 @@ static int __init genl_init(void)
 
 	/* we'll bump the group number right afterwards */
 	genl_sock = netlink_kernel_create(&init_net, NETLINK_GENERIC, 0,
-					  genl_rcv, NULL, THIS_MODULE);
+					  genl_rcv, &genl_mutex, THIS_MODULE);
 	if (genl_sock == NULL)
 		panic("GENL: Cannot initialize generic netlink\n");
 
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 5bc1ed490180..6807c97985a5 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -28,6 +28,7 @@
  * $Id: sch_htb.c,v 1.25 2003/12/07 11:08:25 devik Exp devik $
  */
 #include <linux/module.h>
+#include <linux/moduleparam.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
@@ -53,13 +54,17 @@
 */
 
 #define HTB_HSIZE 16		/* classid hash size */
-#define HTB_HYSTERESIS 1	/* whether to use mode hysteresis for speedup */
+static int htb_hysteresis __read_mostly = 0; /* whether to use mode hysteresis for speedup */
 #define HTB_VER 0x30011		/* major must be matched with number suplied by TC as version */
 
 #if HTB_VER >> 16 != TC_HTB_PROTOVER
 #error "Mismatched sch_htb.c and pkt_sch.h"
 #endif
 
+/* Module parameter and sysfs export */
+module_param    (htb_hysteresis, int, 0640);
+MODULE_PARM_DESC(htb_hysteresis, "Hysteresis mode, less CPU load, less accurate");
+
 /* used internaly to keep status of single class */
 enum htb_cmode {
 	HTB_CANT_SEND,		/* class can't send and can't borrow */
@@ -462,19 +467,21 @@ static void htb_deactivate_prios(struct htb_sched *q, struct htb_class *cl)
 		htb_remove_class_from_row(q, cl, mask);
 }
 
-#if HTB_HYSTERESIS
 static inline long htb_lowater(const struct htb_class *cl)
 {
-	return cl->cmode != HTB_CANT_SEND ? -cl->cbuffer : 0;
+	if (htb_hysteresis)
+		return cl->cmode != HTB_CANT_SEND ? -cl->cbuffer : 0;
+	else
+		return 0;
 }
 static inline long htb_hiwater(const struct htb_class *cl)
 {
-	return cl->cmode == HTB_CAN_SEND ? -cl->buffer : 0;
+	if (htb_hysteresis)
+		return cl->cmode == HTB_CAN_SEND ? -cl->buffer : 0;
+	else
+		return 0;
 }
-#else
-#define htb_lowater(cl)	(0)
-#define htb_hiwater(cl)	(0)
-#endif
+
 
 /**
  * htb_class_mode - computes and returns current class mode
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 532634861db1..024c3ebd9661 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -474,6 +474,15 @@ static void sctp_association_destroy(struct sctp_association *asoc)
 void sctp_assoc_set_primary(struct sctp_association *asoc,
 			    struct sctp_transport *transport)
 {
+	int changeover = 0;
+
+	/* it's a changeover only if we already have a primary path
+	 * that we are changing
+	 */
+	if (asoc->peer.primary_path != NULL &&
+	    asoc->peer.primary_path != transport)
+		changeover = 1 ;
+
 	asoc->peer.primary_path = transport;
 
 	/* Set a default msg_name for events. */
@@ -499,12 +508,12 @@ void sctp_assoc_set_primary(struct sctp_association *asoc,
 	 * double switch to the same destination address.
 	 */
 	if (transport->cacc.changeover_active)
-		transport->cacc.cycling_changeover = 1;
+		transport->cacc.cycling_changeover = changeover;
 
 	/* 2) The sender MUST set CHANGEOVER_ACTIVE to indicate that
 	 * a changeover has occurred.
 	 */
-	transport->cacc.changeover_active = 1;
+	transport->cacc.changeover_active = changeover;
 
 	/* 3) The sender MUST store the next TSN to be sent in
 	 * next_tsn_at_change.
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index b435a193c5df..9258dfe784ae 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -108,14 +108,23 @@ static __init int sctp_proc_init(void)
 	}
 
 	if (sctp_snmp_proc_init())
-		goto out_nomem;
+		goto out_snmp_proc_init;
 	if (sctp_eps_proc_init())
-		goto out_nomem;
+		goto out_eps_proc_init;
 	if (sctp_assocs_proc_init())
-		goto out_nomem;
+		goto out_assocs_proc_init;
 
 	return 0;
 
+out_assocs_proc_init:
+	sctp_eps_proc_exit();
+out_eps_proc_init:
+	sctp_snmp_proc_exit();
+out_snmp_proc_init:
+	if (proc_net_sctp) {
+		proc_net_sctp = NULL;
+		remove_proc_entry("sctp", init_net.proc_net);
+	}
 out_nomem:
 	return -ENOMEM;
 }
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index e7e3baf7009e..0dbcde6758ea 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -4401,7 +4401,9 @@ static int sctp_getsockopt_local_addrs_old(struct sock *sk, int len,
 	if (copy_from_user(&getaddrs, optval, len))
 		return -EFAULT;
 
-	if (getaddrs.addr_num <= 0) return -EINVAL;
+	if (getaddrs.addr_num <= 0 ||
+	    getaddrs.addr_num >= (INT_MAX / sizeof(union sctp_addr)))
+		return -EINVAL;
 	/*
 	 *  For UDP-style sockets, id specifies the association to query.
 	 *  If the id field is set to the value '0' then the locally bound
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index e18cd3628db4..657835f227d3 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -169,6 +169,11 @@ static inline int unix_may_send(struct sock *sk, struct sock *osk)
 	return (unix_peer(osk) == NULL || unix_our_peer(sk, osk));
 }
 
+static inline int unix_recvq_full(struct sock const *sk)
+{
+	return skb_queue_len(&sk->sk_receive_queue) > sk->sk_max_ack_backlog;
+}
+
 static struct sock *unix_peer_get(struct sock *s)
 {
 	struct sock *peer;
@@ -482,6 +487,8 @@ static int unix_socketpair(struct socket *, struct socket *);
 static int unix_accept(struct socket *, struct socket *, int);
 static int unix_getname(struct socket *, struct sockaddr *, int *, int);
 static unsigned int unix_poll(struct file *, struct socket *, poll_table *);
+static unsigned int unix_datagram_poll(struct file *, struct socket *,
+				       poll_table *);
 static int unix_ioctl(struct socket *, unsigned int, unsigned long);
 static int unix_shutdown(struct socket *, int);
 static int unix_stream_sendmsg(struct kiocb *, struct socket *,
@@ -527,7 +534,7 @@ static const struct proto_ops unix_dgram_ops = {
 	.socketpair =	unix_socketpair,
 	.accept =	sock_no_accept,
 	.getname =	unix_getname,
-	.poll =		datagram_poll,
+	.poll =		unix_datagram_poll,
 	.ioctl =	unix_ioctl,
 	.listen =	sock_no_listen,
 	.shutdown =	unix_shutdown,
@@ -548,7 +555,7 @@ static const struct proto_ops unix_seqpacket_ops = {
 	.socketpair =	unix_socketpair,
 	.accept =	unix_accept,
 	.getname =	unix_getname,
-	.poll =		datagram_poll,
+	.poll =		unix_datagram_poll,
 	.ioctl =	unix_ioctl,
 	.listen =	unix_listen,
 	.shutdown =	unix_shutdown,
@@ -983,8 +990,7 @@ static long unix_wait_for_peer(struct sock *other, long timeo)
 
 	sched = !sock_flag(other, SOCK_DEAD) &&
 		!(other->sk_shutdown & RCV_SHUTDOWN) &&
-		(skb_queue_len(&other->sk_receive_queue) >
-		 other->sk_max_ack_backlog);
+		unix_recvq_full(other);
 
 	unix_state_unlock(other);
 
@@ -1058,8 +1064,7 @@ restart:
 	if (other->sk_state != TCP_LISTEN)
 		goto out_unlock;
 
-	if (skb_queue_len(&other->sk_receive_queue) >
-	    other->sk_max_ack_backlog) {
+	if (unix_recvq_full(other)) {
 		err = -EAGAIN;
 		if (!timeo)
 			goto out_unlock;
@@ -1428,9 +1433,7 @@ restart:
 			goto out_unlock;
 	}
 
-	if (unix_peer(other) != sk &&
-	    (skb_queue_len(&other->sk_receive_queue) >
-	     other->sk_max_ack_backlog)) {
+	if (unix_peer(other) != sk && unix_recvq_full(other)) {
 		if (!timeo) {
 			err = -EAGAIN;
 			goto out_unlock;
@@ -1991,6 +1994,64 @@ static unsigned int unix_poll(struct file * file, struct socket *sock, poll_tabl
 	return mask;
 }
 
+static unsigned int unix_datagram_poll(struct file *file, struct socket *sock,
+				       poll_table *wait)
+{
+	struct sock *sk = sock->sk, *peer;
+	unsigned int mask;
+
+	poll_wait(file, sk->sk_sleep, wait);
+
+	peer = unix_peer_get(sk);
+	if (peer) {
+		if (peer != sk) {
+			/*
+			 * Writability of a connected socket additionally
+			 * depends on the state of the receive queue of the
+			 * peer.
+			 */
+			poll_wait(file, &unix_sk(peer)->peer_wait, wait);
+		} else {
+			sock_put(peer);
+			peer = NULL;
+		}
+	}
+
+	mask = 0;
+
+	/* exceptional events? */
+	if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
+		mask |= POLLERR;
+	if (sk->sk_shutdown & RCV_SHUTDOWN)
+		mask |= POLLRDHUP;
+	if (sk->sk_shutdown == SHUTDOWN_MASK)
+		mask |= POLLHUP;
+
+	/* readable? */
+	if (!skb_queue_empty(&sk->sk_receive_queue) ||
+	    (sk->sk_shutdown & RCV_SHUTDOWN))
+		mask |= POLLIN | POLLRDNORM;
+
+	/* Connection-based need to check for termination and startup */
+	if (sk->sk_type == SOCK_SEQPACKET) {
+		if (sk->sk_state == TCP_CLOSE)
+			mask |= POLLHUP;
+		/* connection hasn't started yet? */
+		if (sk->sk_state == TCP_SYN_SENT)
+			return mask;
+	}
+
+	/* writable? */
+	if (unix_writable(sk) && !(peer && unix_recvq_full(peer)))
+		mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+	else
+		set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
+
+	if (peer)
+		sock_put(peer);
+
+	return mask;
+}
 
 #ifdef CONFIG_PROC_FS
 static struct sock *first_unix_socket(int *i)