Merge branch 'master' into for-2.6.33

10 files changed, 84 insertions, 55 deletions

diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index e2f95059256..aa00398be80 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -229,14 +229,17 @@ unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev,
  */
 
 int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif,
-			struct net_device *dev, __be32 *spec_dst, u32 *itag)
+			struct net_device *dev, __be32 *spec_dst,
+			u32 *itag, u32 mark)
 {
 	struct in_device *in_dev;
 	struct flowi fl = { .nl_u = { .ip4_u =
 				      { .daddr = src,
 					.saddr = dst,
 					.tos = tos } },
+			    .mark = mark,
 			    .iif = oif };
+
 	struct fib_result res;
 	int no_addr, rpf;
 	int ret;
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index 575f9bd51cc..d3fe10be721 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -563,7 +563,7 @@ out_oversize:
 		printk(KERN_INFO "Oversized IP packet from %pI4.\n",
 			&qp->saddr);
 out_fail:
-	IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_REASMFAILS);
+	IP_INC_STATS_BH(net, IPSTATS_MIB_REASMFAILS);
 	return err;
 }
 
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 41ada9904d3..14333385262 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1464,7 +1464,7 @@ static void ipgre_tap_setup(struct net_device *dev)
 
 	ether_setup(dev);
 
-	dev->netdev_ops		= &ipgre_netdev_ops;
+	dev->netdev_ops		= &ipgre_tap_netdev_ops;
 	dev->destructor 	= free_netdev;
 
 	dev->iflink		= 0;
@@ -1525,25 +1525,29 @@ static int ipgre_changelink(struct net_device *dev, struct nlattr *tb[],
 		if (t->dev != dev)
 			return -EEXIST;
 	} else {
-		unsigned nflags = 0;
-
 		t = nt;
 
-		if (ipv4_is_multicast(p.iph.daddr))
-			nflags = IFF_BROADCAST;
-		else if (p.iph.daddr)
-			nflags = IFF_POINTOPOINT;
+		if (dev->type != ARPHRD_ETHER) {
+			unsigned nflags = 0;
 
-		if ((dev->flags ^ nflags) &
-		    (IFF_POINTOPOINT | IFF_BROADCAST))
-			return -EINVAL;
+			if (ipv4_is_multicast(p.iph.daddr))
+				nflags = IFF_BROADCAST;
+			else if (p.iph.daddr)
+				nflags = IFF_POINTOPOINT;
+
+			if ((dev->flags ^ nflags) &
+			    (IFF_POINTOPOINT | IFF_BROADCAST))
+				return -EINVAL;
+		}
 
 		ipgre_tunnel_unlink(ign, t);
 		t->parms.iph.saddr = p.iph.saddr;
 		t->parms.iph.daddr = p.iph.daddr;
 		t->parms.i_key = p.i_key;
-		memcpy(dev->dev_addr, &p.iph.saddr, 4);
-		memcpy(dev->broadcast, &p.iph.daddr, 4);
+		if (dev->type != ARPHRD_ETHER) {
+			memcpy(dev->dev_addr, &p.iph.saddr, 4);
+			memcpy(dev->broadcast, &p.iph.daddr, 4);
+		}
 		ipgre_tunnel_link(ign, t);
 		netdev_state_change(dev);
 	}
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 08ccd344de7..ae40ed1ba56 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -438,25 +438,27 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 		goto tx_error;
 	}
 
-	if (tiph->frag_off)
+	df |= old_iph->frag_off & htons(IP_DF);
+
+	if (df) {
 		mtu = dst_mtu(&rt->u.dst) - sizeof(struct iphdr);
-	else
-		mtu = skb_dst(skb) ? dst_mtu(skb_dst(skb)) : dev->mtu;
 
-	if (mtu < 68) {
-		stats->collisions++;
-		ip_rt_put(rt);
-		goto tx_error;
-	}
-	if (skb_dst(skb))
-		skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
+		if (mtu < 68) {
+			stats->collisions++;
+			ip_rt_put(rt);
+			goto tx_error;
+		}
 
-	df |= (old_iph->frag_off&htons(IP_DF));
+		if (skb_dst(skb))
+			skb_dst(skb)->ops->update_pmtu(skb_dst(skb), mtu);
 
-	if ((old_iph->frag_off&htons(IP_DF)) && mtu < ntohs(old_iph->tot_len)) {
-		icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED, htonl(mtu));
-		ip_rt_put(rt);
-		goto tx_error;
+		if ((old_iph->frag_off & htons(IP_DF)) &&
+		    mtu < ntohs(old_iph->tot_len)) {
+			icmp_send(skb, ICMP_DEST_UNREACH, ICMP_FRAG_NEEDED,
+				  htonl(mtu));
+			ip_rt_put(rt);
+			goto tx_error;
+		}
 	}
 
 	if (tunnel->err_count > 0) {
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 630a56df7b4..99508d66a64 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -483,8 +483,10 @@ static int vif_add(struct net *net, struct vifctl *vifc, int mrtsock)
 		return -EINVAL;
 	}
 
-	if ((in_dev = __in_dev_get_rtnl(dev)) == NULL)
+	if ((in_dev = __in_dev_get_rtnl(dev)) == NULL) {
+		dev_put(dev);
 		return -EADDRNOTAVAIL;
+	}
 	IPV4_DEVCONF(in_dev->cnf, MC_FORWARDING)++;
 	ip_rt_multicast_event(in_dev);
 
diff --git a/net/ipv4/netfilter/nf_nat_core.c b/net/ipv4/netfilter/nf_nat_core.c
index 68afc6ecd34..fe1a64479dd 100644
--- a/net/ipv4/netfilter/nf_nat_core.c
+++ b/net/ipv4/netfilter/nf_nat_core.c
@@ -750,6 +750,8 @@ static int __init nf_nat_init(void)
 	BUG_ON(nfnetlink_parse_nat_setup_hook != NULL);
 	rcu_assign_pointer(nfnetlink_parse_nat_setup_hook,
 			   nfnetlink_parse_nat_setup);
+	BUG_ON(nf_ct_nat_offset != NULL);
+	rcu_assign_pointer(nf_ct_nat_offset, nf_nat_get_offset);
 	return 0;
 
  cleanup_extend:
@@ -764,6 +766,7 @@ static void __exit nf_nat_cleanup(void)
 	nf_ct_extend_unregister(&nat_extend);
 	rcu_assign_pointer(nf_nat_seq_adjust_hook, NULL);
 	rcu_assign_pointer(nfnetlink_parse_nat_setup_hook, NULL);
+	rcu_assign_pointer(nf_ct_nat_offset, NULL);
 	synchronize_net();
 }
 
diff --git a/net/ipv4/netfilter/nf_nat_helper.c b/net/ipv4/netfilter/nf_nat_helper.c
index 09172a65d9b..f9520fa3aba 100644
--- a/net/ipv4/netfilter/nf_nat_helper.c
+++ b/net/ipv4/netfilter/nf_nat_helper.c
@@ -73,6 +73,28 @@ adjust_tcp_sequence(u32 seq,
 	DUMP_OFFSET(this_way);
 }
 
+/* Get the offset value, for conntrack */
+s16 nf_nat_get_offset(const struct nf_conn *ct,
+		      enum ip_conntrack_dir dir,
+		      u32 seq)
+{
+	struct nf_conn_nat *nat = nfct_nat(ct);
+	struct nf_nat_seq *this_way;
+	s16 offset;
+
+	if (!nat)
+		return 0;
+
+	this_way = &nat->seq[dir];
+	spin_lock_bh(&nf_nat_seqofs_lock);
+	offset = after(seq, this_way->correction_pos)
+		 ? this_way->offset_after : this_way->offset_before;
+	spin_unlock_bh(&nf_nat_seqofs_lock);
+
+	return offset;
+}
+EXPORT_SYMBOL_GPL(nf_nat_get_offset);
+
 /* Frobs data inside this packet, which is linear. */
 static void mangle_contents(struct sk_buff *skb,
 			    unsigned int dataoff,
@@ -189,11 +211,6 @@ nf_nat_mangle_tcp_packet(struct sk_buff *skb,
 		adjust_tcp_sequence(ntohl(tcph->seq),
 				    (int)rep_len - (int)match_len,
 				    ct, ctinfo);
-		/* Tell TCP window tracking about seq change */
-		nf_conntrack_tcp_update(skb, ip_hdrlen(skb),
-					ct, CTINFO2DIR(ctinfo),
-					(int)rep_len - (int)match_len);
-
 		nf_conntrack_event_cache(IPCT_NATSEQADJ, ct);
 	}
 	return 1;
@@ -415,12 +432,7 @@ nf_nat_seq_adjust(struct sk_buff *skb,
 	tcph->seq = newseq;
 	tcph->ack_seq = newack;
 
-	if (!nf_nat_sack_adjust(skb, tcph, ct, ctinfo))
-		return 0;
-
-	nf_conntrack_tcp_update(skb, ip_hdrlen(skb), ct, dir, seqoff);
-
-	return 1;
+	return nf_nat_sack_adjust(skb, tcph, ct, ctinfo);
 }
 
 /* Setup NAT on this expected conntrack so it follows master. */
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index bb419925202..5b1050a5d87 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1854,7 +1854,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 			goto e_inval;
 		spec_dst = inet_select_addr(dev, 0, RT_SCOPE_LINK);
 	} else if (fib_validate_source(saddr, 0, tos, 0,
-					dev, &spec_dst, &itag) < 0)
+					dev, &spec_dst, &itag, 0) < 0)
 		goto e_inval;
 
 	rth = dst_alloc(&ipv4_dst_ops);
@@ -1967,7 +1967,7 @@ static int __mkroute_input(struct sk_buff *skb,
 
 
 	err = fib_validate_source(saddr, daddr, tos, FIB_RES_OIF(*res),
-				  in_dev->dev, &spec_dst, &itag);
+				  in_dev->dev, &spec_dst, &itag, skb->mark);
 	if (err < 0) {
 		ip_handle_martian_source(in_dev->dev, in_dev, skb, daddr,
 					 saddr);
@@ -2141,7 +2141,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 		int result;
 		result = fib_validate_source(saddr, daddr, tos,
 					     net->loopback_dev->ifindex,
-					     dev, &spec_dst, &itag);
+					     dev, &spec_dst, &itag, skb->mark);
 		if (result < 0)
 			goto martian_source;
 		if (result)
@@ -2170,7 +2170,7 @@ brd_input:
 		spec_dst = inet_select_addr(dev, 0, RT_SCOPE_LINK);
 	else {
 		err = fib_validate_source(saddr, 0, tos, 0, dev, &spec_dst,
-					  &itag);
+					  &itag, skb->mark);
 		if (err < 0)
 			goto martian_source;
 		if (err)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 98440ad8255..f1813bc7108 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1183,7 +1183,9 @@ void tcp_cleanup_rbuf(struct sock *sk, int copied)
 #if TCP_DEBUG
 	struct sk_buff *skb = skb_peek(&sk->sk_receive_queue);
 
-	WARN_ON(skb && !before(tp->copied_seq, TCP_SKB_CB(skb)->end_seq));
+	WARN(skb && !before(tp->copied_seq, TCP_SKB_CB(skb)->end_seq),
+	     KERN_INFO "cleanup rbuf bug: copied %X seq %X rcvnxt %X\n",
+	     tp->copied_seq, TCP_SKB_CB(skb)->end_seq, tp->rcv_nxt);
 #endif
 
 	if (inet_csk_ack_scheduled(sk)) {
@@ -1430,11 +1432,13 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			/* Now that we have two receive queues this
 			 * shouldn't happen.
 			 */
-			if (before(*seq, TCP_SKB_CB(skb)->seq)) {
-				printk(KERN_INFO "recvmsg bug: copied %X "
-				       "seq %X\n", *seq, TCP_SKB_CB(skb)->seq);
+			if (WARN(before(*seq, TCP_SKB_CB(skb)->seq),
+			     KERN_INFO "recvmsg bug: copied %X "
+				       "seq %X rcvnxt %X fl %X\n", *seq,
+				       TCP_SKB_CB(skb)->seq, tp->rcv_nxt,
+				       flags))
 				break;
-			}
+
 			offset = *seq - TCP_SKB_CB(skb)->seq;
 			if (tcp_hdr(skb)->syn)
 				offset--;
@@ -1443,8 +1447,9 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			if (tcp_hdr(skb)->fin)
 				goto found_fin_ok;
 			WARN(!(flags & MSG_PEEK), KERN_INFO "recvmsg bug 2: "
-					"copied %X seq %X\n", *seq,
-					TCP_SKB_CB(skb)->seq);
+					"copied %X seq %X rcvnxt %X fl %X\n",
+					*seq, TCP_SKB_CB(skb)->seq,
+					tp->rcv_nxt, flags);
 		}
 
 		/* Well, if we have backlog, try to process it now yet. */
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index d0d436d6216..0fa9f70e4b1 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -999,9 +999,7 @@ try_again:
 		err = ulen;
 
 out_free:
-	lock_sock(sk);
-	skb_free_datagram(sk, skb);
-	release_sock(sk);
+	skb_free_datagram_locked(sk, skb);
 out:
 	return err;