Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NET]: Fix MAX_HEADER setting.
  [NETFILTER]: ipt_REJECT: fix memory corruption
  [NETFILTER]: conntrack: fix refcount leak when finding expectation
  [NETFILTER]: ctnetlink: fix reference count leak
  [NETFILTER]: nf_conntrack: fix the race on assign helper to new conntrack
  [NETFILTER]: nfctnetlink: assign helper to newly created conntrack

include/linux/netdevice.h

@@ -93,8 +93,10 @@ struct netpoll_info;
 #endif
 #endif
 
-#if !defined(CONFIG_NET_IPIP) && \
-    !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
+#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
+    !defined(CONFIG_NET_IPGRE) &&  !defined(CONFIG_NET_IPGRE_MODULE) && \
+    !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
+    !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
 #define MAX_HEADER LL_MAX_HEADER
 #else
 #define MAX_HEADER (LL_MAX_HEADER + 48)

net/ipv4/netfilter/ip_conntrack_core.c

@@ -225,10 +225,8 @@ __ip_conntrack_expect_find(const struct ip_conntrack_tuple *tuple)
 	struct ip_conntrack_expect *i;
 
 	list_for_each_entry(i, &ip_conntrack_expect_list, list) {
-		if (ip_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask)) {
-			atomic_inc(&i->use);
+		if (ip_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask))
 			return i;
-		}
 	}
 	return NULL;
 }
@@ -241,6 +239,8 @@ ip_conntrack_expect_find(const struct ip_conntrack_tuple *tuple)
 
 	read_lock_bh(&ip_conntrack_lock);
 	i = __ip_conntrack_expect_find(tuple);
+	if (i)
+		atomic_inc(&i->use);
 	read_unlock_bh(&ip_conntrack_lock);
 
 	return i;

net/ipv4/netfilter/ip_conntrack_netlink.c

@@ -153,6 +153,7 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct ip_conntrack *ct)
 	return ret;
 
 nfattr_failure:
+	ip_conntrack_proto_put(proto);
 	return -1;
 }
 

net/ipv4/netfilter/ipt_REJECT.c

@@ -114,6 +114,14 @@ static void send_reset(struct sk_buff *oldskb, int hook)
 	tcph->window = 0;
 	tcph->urg_ptr = 0;
 
+	/* Adjust TCP checksum */
+	tcph->check = 0;
+	tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
+				   nskb->nh.iph->saddr,
+				   nskb->nh.iph->daddr,
+				   csum_partial((char *)tcph,
+						sizeof(struct tcphdr), 0));
+
 	/* Set DF, id = 0 */
 	nskb->nh.iph->frag_off = htons(IP_DF);
 	nskb->nh.iph->id = 0;
@@ -129,14 +137,8 @@ static void send_reset(struct sk_buff *oldskb, int hook)
 	if (ip_route_me_harder(&nskb, addr_type))
 		goto free_nskb;
 
-	/* Adjust TCP checksum */
 	nskb->ip_summed = CHECKSUM_NONE;
-	tcph->check = 0;
-	tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
-				   nskb->nh.iph->saddr,
-				   nskb->nh.iph->daddr,
-				   csum_partial((char *)tcph,
-						sizeof(struct tcphdr), 0));
+
 	/* Adjust IP TTL */
 	nskb->nh.iph->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
 

net/netfilter/nf_conntrack_core.c

@@ -469,10 +469,8 @@ __nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple)
 	struct nf_conntrack_expect *i;
 
 	list_for_each_entry(i, &nf_conntrack_expect_list, list) {
-		if (nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask)) {
-			atomic_inc(&i->use);
+		if (nf_ct_tuple_mask_cmp(tuple, &i->tuple, &i->mask))
 			return i;
-		}
 	}
 	return NULL;
 }
@@ -485,6 +483,8 @@ nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple)
 
 	read_lock_bh(&nf_conntrack_lock);
 	i = __nf_conntrack_expect_find(tuple);
+	if (i)
+		atomic_inc(&i->use);
 	read_unlock_bh(&nf_conntrack_lock);
 
 	return i;
@@ -893,12 +893,6 @@ __nf_conntrack_alloc(const struct nf_conntrack_tuple *orig,
 
 	memset(conntrack, 0, nf_ct_cache[features].size);
 	conntrack->features = features;
-	if (helper) {
-		struct nf_conn_help *help = nfct_help(conntrack);
-		NF_CT_ASSERT(help);
-		help->helper = helper;
-	}
-
 	atomic_set(&conntrack->ct_general.use, 1);
 	conntrack->ct_general.destroy = destroy_conntrack;
 	conntrack->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
@@ -982,8 +976,13 @@ init_conntrack(const struct nf_conntrack_tuple *tuple,
 #endif
 		nf_conntrack_get(&conntrack->master->ct_general);
 		NF_CT_STAT_INC(expect_new);
-	} else
+	} else {
+		struct nf_conn_help *help = nfct_help(conntrack);
+
+		if (help)
+			help->helper = __nf_ct_helper_find(&repl_tuple);
 		NF_CT_STAT_INC(new);
+	}
 
 	/* Overload tuple linked list to put us in unconfirmed list. */
 	list_add(&conntrack->tuplehash[IP_CT_DIR_ORIGINAL].list, &unconfirmed);

net/netfilter/nf_conntrack_netlink.c

@@ -161,6 +161,7 @@ ctnetlink_dump_protoinfo(struct sk_buff *skb, const struct nf_conn *ct)
 	return ret;
 
 nfattr_failure:
+	nf_ct_proto_put(proto);
 	return -1;
 }
 
@@ -949,6 +950,7 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
 {
 	struct nf_conn *ct;
 	int err = -EINVAL;
+	struct nf_conn_help *help;
 
 	ct = nf_conntrack_alloc(otuple, rtuple);
 	if (ct == NULL || IS_ERR(ct))
@@ -976,9 +978,16 @@ ctnetlink_create_conntrack(struct nfattr *cda[],
 		ct->mark = ntohl(*(u_int32_t *)NFA_DATA(cda[CTA_MARK-1]));
 #endif
 
+	help = nfct_help(ct);
+	if (help)
+		help->helper = nf_ct_helper_find_get(rtuple);
+
 	add_timer(&ct->timeout);
 	nf_conntrack_hash_insert(ct);
 
+	if (help && help->helper)
+		nf_ct_helper_put(help->helper);
+
 	return 0;
 
 err: