Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/kaber/nf-next-2.6

include/linux/netfilter/Kbuild

@@ -8,6 +8,7 @@ header-y += xt_CONNMARK.h
 header-y += xt_CONNSECMARK.h
 header-y += xt_CT.h
 header-y += xt_DSCP.h
+header-y += xt_IDLETIMER.h
 header-y += xt_LED.h
 header-y += xt_MARK.h
 header-y += xt_NFLOG.h

include/linux/netfilter/nf_conntrack_common.h

@@ -76,6 +76,10 @@ enum ip_conntrack_status {
 	/* Conntrack is a template */
 	IPS_TEMPLATE_BIT = 11,
 	IPS_TEMPLATE = (1 << IPS_TEMPLATE_BIT),
+
+	/* Conntrack is a fake untracked entry */
+	IPS_UNTRACKED_BIT = 12,
+	IPS_UNTRACKED = (1 << IPS_UNTRACKED_BIT),
 };
 
 /* Connection tracking event types */

include/linux/netfilter/nfnetlink_log.h

@@ -89,6 +89,7 @@ enum nfulnl_attr_config {
 #define NFULNL_COPY_NONE	0x00
 #define NFULNL_COPY_META	0x01
 #define NFULNL_COPY_PACKET	0x02
+#define NFULNL_COPY_DISABLED	0x03
 
 #define NFULNL_CFG_F_SEQ	0x0001
 #define NFULNL_CFG_F_SEQ_GLOBAL	0x0002

include/linux/netfilter/xt_IDLETIMER.h

@@ -0,0 +1,45 @@
+/*
+ * linux/include/linux/netfilter/xt_IDLETIMER.h
+ *
+ * Header file for Xtables timer target module.
+ *
+ * Copyright (C) 2004, 2010 Nokia Corporation
+ * Written by Timo Teras <ext-timo.teras@nokia.com>
+ *
+ * Converted to x_tables and forward-ported to 2.6.34
+ * by Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef _XT_IDLETIMER_H
+#define _XT_IDLETIMER_H
+
+#include <linux/types.h>
+
+#define MAX_IDLETIMER_LABEL_SIZE 28
+
+struct idletimer_tg_info {
+	__u32 timeout;
+
+	char label[MAX_IDLETIMER_LABEL_SIZE];
+
+	/* for kernel module internal use only */
+	struct idletimer_tg *timer __attribute((aligned(8)));
+};
+
+#endif

include/net/netfilter/nf_conntrack.h

@@ -257,7 +257,12 @@ extern s16 (*nf_ct_nat_offset)(const struct nf_conn *ct,
 			       u32 seq);
 
 /* Fake conntrack entry for untracked connections */
-extern struct nf_conn nf_conntrack_untracked;
+DECLARE_PER_CPU(struct nf_conn, nf_conntrack_untracked);
+static inline struct nf_conn *nf_ct_untracked_get(void)
+{
+	return &__raw_get_cpu_var(nf_conntrack_untracked);
+}
+extern void nf_ct_untracked_status_or(unsigned long bits);
 
 /* Iterate over all conntracks: if iter returns true, it's deleted. */
 extern void
@@ -285,9 +290,9 @@ static inline int nf_ct_is_dying(struct nf_conn *ct)
 	return test_bit(IPS_DYING_BIT, &ct->status);
 }
 
-static inline int nf_ct_is_untracked(const struct sk_buff *skb)
+static inline int nf_ct_is_untracked(const struct nf_conn *ct)
 {
-	return (skb->nfct == &nf_conntrack_untracked.ct_general);
+	return test_bit(IPS_UNTRACKED_BIT, &ct->status);
 }
 
 extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp);

include/net/netfilter/nf_conntrack_core.h

@@ -60,7 +60,7 @@ static inline int nf_conntrack_confirm(struct sk_buff *skb)
 	struct nf_conn *ct = (struct nf_conn *)skb->nfct;
 	int ret = NF_ACCEPT;
 
-	if (ct && ct != &nf_conntrack_untracked) {
+	if (ct && !nf_ct_is_untracked(ct)) {
 		if (!nf_ct_is_confirmed(ct))
 			ret = __nf_conntrack_confirm(skb);
 		if (likely(ret == NF_ACCEPT))

include/net/netfilter/xt_rateest.h

@@ -2,13 +2,17 @@
 #define _XT_RATEEST_H
 
 struct xt_rateest {
+	/* keep lock and bstats on same cache line to speedup xt_rateest_tg() */
+	struct gnet_stats_basic_packed	bstats;
+	spinlock_t			lock;
+	/* keep rstats and lock on same cache line to speedup xt_rateest_mt() */
+	struct gnet_stats_rate_est	rstats;
+
+	/* following fields not accessed in hot path */
 	struct hlist_node		list;
 	char				name[IFNAMSIZ];
 	unsigned int			refcnt;
-	spinlock_t			lock;
 	struct gnet_estimator		params;
-	struct gnet_stats_rate_est	rstats;
-	struct gnet_stats_basic_packed	bstats;
 	struct rcu_head			rcu;
 };
 

net/bridge/br_netfilter.c

@@ -245,8 +245,7 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
 		kfree_skb(skb);
 		return 0;
 	}
-	dst_hold(&rt->dst);
-	skb_dst_set(skb, &rt->dst);
+	skb_dst_set_noref(skb, &rt->dst);
 
 	skb->dev = nf_bridge->physindev;
 	nf_bridge_update_protocol(skb);
@@ -397,8 +396,7 @@ static int br_nf_pre_routing_finish(struct sk_buff *skb)
 			kfree_skb(skb);
 			return 0;
 		}
-		dst_hold(&rt->dst);
-		skb_dst_set(skb, &rt->dst);
+		skb_dst_set_noref(skb, &rt->dst);
 	}
 
 	skb->dev = nf_bridge->physindev;

net/ipv4/netfilter.c

@@ -212,9 +212,7 @@ static __sum16 nf_ip_checksum_partial(struct sk_buff *skb, unsigned int hook,
 		skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr, protocol,
 					       skb->len - dataoff, 0);
 		skb->ip_summed = CHECKSUM_NONE;
-		csum = __skb_checksum_complete_head(skb, dataoff + len);
-		if (!csum)
-			skb->ip_summed = CHECKSUM_UNNECESSARY;
+		return __skb_checksum_complete_head(skb, dataoff + len);
 	}
 	return csum;
 }

net/ipv4/netfilter/arp_tables.c

@@ -758,7 +758,7 @@ static struct xt_counters *alloc_counters(const struct xt_table *table)
 	 * about).
 	 */
 	countersize = sizeof(struct xt_counters) * private->number;
-	counters = vmalloc_node(countersize, numa_node_id());
+	counters = vmalloc(countersize);
 
 	if (counters == NULL)
 		return ERR_PTR(-ENOMEM);
@@ -1005,8 +1005,7 @@ static int __do_replace(struct net *net, const char *name,
 	struct arpt_entry *iter;
 
 	ret = 0;
-	counters = vmalloc_node(num_counters * sizeof(struct xt_counters),
-				numa_node_id());
+	counters = vmalloc(num_counters * sizeof(struct xt_counters));
 	if (!counters) {
 		ret = -ENOMEM;
 		goto out;
@@ -1159,7 +1158,7 @@ static int do_add_counters(struct net *net, const void __user *user,
 	if (len != size + num_counters * sizeof(struct xt_counters))
 		return -EINVAL;
 
-	paddc = vmalloc_node(len - size, numa_node_id());
+	paddc = vmalloc(len - size);
 	if (!paddc)
 		return -ENOMEM;
 

net/ipv4/netfilter/ip_queue.c

@@ -42,7 +42,7 @@ typedef int (*ipq_cmpfn)(struct nf_queue_entry *, unsigned long);
 
 static unsigned char copy_mode __read_mostly = IPQ_COPY_NONE;
 static unsigned int queue_maxlen __read_mostly = IPQ_QMAX_DEFAULT;
-static DEFINE_RWLOCK(queue_lock);
+static DEFINE_SPINLOCK(queue_lock);
 static int peer_pid __read_mostly;
 static unsigned int copy_range __read_mostly;
 static unsigned int queue_total;
@@ -72,10 +72,10 @@ __ipq_set_mode(unsigned char mode, unsigned int range)
 		break;
 
 	case IPQ_COPY_PACKET:
-		copy_mode = mode;
+		if (range > 0xFFFF)
+			range = 0xFFFF;
 		copy_range = range;
-		if (copy_range > 0xFFFF)
-			copy_range = 0xFFFF;
+		copy_mode = mode;
 		break;
 
 	default:
@@ -101,7 +101,7 @@ ipq_find_dequeue_entry(unsigned long id)
 {
 	struct nf_queue_entry *entry = NULL, *i;
 
-	write_lock_bh(&queue_lock);
+	spin_lock_bh(&queue_lock);
 
 	list_for_each_entry(i, &queue_list, list) {
 		if ((unsigned long)i == id) {
@@ -115,7 +115,7 @@ ipq_find_dequeue_entry(unsigned long id)
 		queue_total--;
 	}
 
-	write_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 	return entry;
 }
 
@@ -136,9 +136,9 @@ __ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
 static void
 ipq_flush(ipq_cmpfn cmpfn, unsigned long data)
 {
-	write_lock_bh(&queue_lock);
+	spin_lock_bh(&queue_lock);
 	__ipq_flush(cmpfn, data);
-	write_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 }
 
 static struct sk_buff *
@@ -152,36 +152,29 @@ ipq_build_packet_message(struct nf_queue_entry *entry, int *errp)
 	struct nlmsghdr *nlh;
 	struct timeval tv;
 
-	read_lock_bh(&queue_lock);
-
-	switch (copy_mode) {
+	switch (ACCESS_ONCE(copy_mode)) {
 	case IPQ_COPY_META:
 	case IPQ_COPY_NONE:
 		size = NLMSG_SPACE(sizeof(*pmsg));
 		break;
 
 	case IPQ_COPY_PACKET:
 		if (entry->skb->ip_summed == CHECKSUM_PARTIAL &&
-		    (*errp = skb_checksum_help(entry->skb))) {
-			read_unlock_bh(&queue_lock);
+		    (*errp = skb_checksum_help(entry->skb)))
 			return NULL;
-		}
-		if (copy_range == 0 || copy_range > entry->skb->len)
+
+		data_len = ACCESS_ONCE(copy_range);
+		if (data_len == 0 || data_len > entry->skb->len)
 			data_len = entry->skb->len;
-		else
-			data_len = copy_range;
 
 		size = NLMSG_SPACE(sizeof(*pmsg) + data_len);
 		break;
 
 	default:
 		*errp = -EINVAL;
-		read_unlock_bh(&queue_lock);
 		return NULL;
 	}
 
-	read_unlock_bh(&queue_lock);
-
 	skb = alloc_skb(size, GFP_ATOMIC);
 	if (!skb)
 		goto nlmsg_failure;
@@ -242,7 +235,7 @@ ipq_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
 	if (nskb == NULL)
 		return status;
 
-	write_lock_bh(&queue_lock);
+	spin_lock_bh(&queue_lock);
 
 	if (!peer_pid)
 		goto err_out_free_nskb;
@@ -266,14 +259,14 @@ ipq_enqueue_packet(struct nf_queue_entry *entry, unsigned int queuenum)
 
 	__ipq_enqueue_entry(entry);
 
-	write_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 	return status;
 
 err_out_free_nskb:
 	kfree_skb(nskb);
 
 err_out_unlock:
-	write_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 	return status;
 }
 
@@ -342,9 +335,9 @@ ipq_set_mode(unsigned char mode, unsigned int range)
 {
 	int status;
 
-	write_lock_bh(&queue_lock);
+	spin_lock_bh(&queue_lock);
 	status = __ipq_set_mode(mode, range);
-	write_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 	return status;
 }
 
@@ -440,19 +433,19 @@ __ipq_rcv_skb(struct sk_buff *skb)
 	if (security_netlink_recv(skb, CAP_NET_ADMIN))
 		RCV_SKB_FAIL(-EPERM);
 
-	write_lock_bh(&queue_lock);
+	spin_lock_bh(&queue_lock);
 
 	if (peer_pid) {
 		if (peer_pid != pid) {
-			write_unlock_bh(&queue_lock);
+			spin_unlock_bh(&queue_lock);
 			RCV_SKB_FAIL(-EBUSY);
 		}
 	} else {
 		net_enable_timestamp();
 		peer_pid = pid;
 	}
 
-	write_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 
 	status = ipq_receive_peer(NLMSG_DATA(nlh), type,
 				  nlmsglen - NLMSG_LENGTH(0));
@@ -497,10 +490,10 @@ ipq_rcv_nl_event(struct notifier_block *this,
 	struct netlink_notify *n = ptr;
 
 	if (event == NETLINK_URELEASE && n->protocol == NETLINK_FIREWALL) {
-		write_lock_bh(&queue_lock);
+		spin_lock_bh(&queue_lock);
 		if ((net_eq(n->net, &init_net)) && (n->pid == peer_pid))
 			__ipq_reset();
-		write_unlock_bh(&queue_lock);
+		spin_unlock_bh(&queue_lock);
 	}
 	return NOTIFY_DONE;
 }
@@ -527,7 +520,7 @@ static ctl_table ipq_table[] = {
 #ifdef CONFIG_PROC_FS
 static int ip_queue_show(struct seq_file *m, void *v)
 {
-	read_lock_bh(&queue_lock);
+	spin_lock_bh(&queue_lock);
 
 	seq_printf(m,
 		      "Peer PID          : %d\n"
@@ -545,7 +538,7 @@ static int ip_queue_show(struct seq_file *m, void *v)
 		      queue_dropped,
 		      queue_user_dropped);
 
-	read_unlock_bh(&queue_lock);
+	spin_unlock_bh(&queue_lock);
 	return 0;
 }
 

net/ipv4/netfilter/ip_tables.c

@@ -928,7 +928,7 @@ static struct xt_counters *alloc_counters(const struct xt_table *table)
 	   (other than comefrom, which userspace doesn't care
 	   about). */
 	countersize = sizeof(struct xt_counters) * private->number;
-	counters = vmalloc_node(countersize, numa_node_id());
+	counters = vmalloc(countersize);
 
 	if (counters == NULL)
 		return ERR_PTR(-ENOMEM);
@@ -1352,7 +1352,7 @@ do_add_counters(struct net *net, const void __user *user,
 	if (len != size + num_counters * sizeof(struct xt_counters))
 		return -EINVAL;
 
-	paddc = vmalloc_node(len - size, numa_node_id());
+	paddc = vmalloc(len - size);
 	if (!paddc)
 		return -ENOMEM;