Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains a large Netfilter update for net-next,
to summarise:

1) Add support for stateful objects. This series provides a nf_tables
   native alternative to the extended accounting infrastructure for
   nf_tables. Two initial stateful objects are supported: counters and
   quotas. Objects are identified by a user-defined name, you can fetch
   and reset them anytime. You can also use a maps to allow fast lookups
   using any arbitrary key combination. More info at:

   http://marc.info/?l=netfilter-devel&m=148029128323837&w=2

2) On-demand registration of nf_conntrack and defrag hooks per netns.
   Register nf_conntrack hooks if we have a stateful ruleset, ie.
   state-based filtering or NAT. The new nf_conntrack_default_on sysctl
   enables this from newly created netnamespaces. Default behaviour is not
   modified. Patches from Florian Westphal.

3) Allocate 4k chunks and then use these for x_tables counter allocation
   requests, this improves ruleset load time and also datapath ruleset
   evaluation, patches from Florian Westphal.

4) Add support for ebpf to the existing x_tables bpf extension.
   From Willem de Bruijn.

5) Update layer 4 checksum if any of the pseudoheader fields is updated.
   This provides a limited form of 1:1 stateless NAT that make sense in
   specific scenario, eg. load balancing.

6) Add support to flush sets in nf_tables. This series comes with a new
   set->ops->deactivate_one() indirection given that we have to walk
   over the list of set elements, then deactivate them one by one.
   The existing set->ops->deactivate() performs an element lookup that
   we don't need.

7) Two patches to avoid cloning packets, thus speed up packet forwarding
   via nft_fwd from ingress. From Florian Westphal.

8) Two IPVS patches via Simon Horman: Decrement ttl in all modes to
   prevent infinite loops, patch from Dwip Banerjee. And one minor
   refactoring from Gao feng.

9) Revisit recent log support for nf_tables netdev families: One patch
   to ensure that we correctly handle non-ethernet packets. Another
   patch to add missing logger definition for netdev. Patches from
   Liping Zhang.

10) Three patches for nft_fib, one to address insufficient register
    initialization and another to solve incorrect (although harmless)
    byteswap operation. Moreover update xt_rpfilter and nft_fib to match
    lbcast packets with zeronet as source, eg. DHCP Discover packets
    (0.0.0.0 -> 255.255.255.255). Also from Liping Zhang.

11) Built-in DCCP, SCTP and UDPlite conntrack and NAT support, from
    Davide Caratti. While DCCP is rather hopeless lately, and UDPlite has
    been broken in many-cast mode for some little time, let's give them a
    chance by placing them at the same level as other existing protocols.
    Thus, users don't explicitly have to modprobe support for this and
    NAT rules work for them. Some people point to the lack of support in
    SOHO Linux-based routers that make deployment of new protocols harder.
    I guess other middleboxes outthere on the Internet are also to blame.
    Anyway, let's see if this has any impact in the midrun.

12) Skip software SCTP software checksum calculation if the NIC comes
    with SCTP checksum offload support. From Davide Caratti.

13) Initial core factoring to prepare conversion to hook array. Three
    patches from Aaron Conole.

14) Gao Feng made a wrong conversion to switch in the xt_multiport
    extension in a patch coming in the previous batch. Fix it in this
    batch.

15) Get vmalloc call in sync with kmalloc flags to avoid a warning
    and likely OOM killer intervention from x_tables. From Marcelo
    Ricardo Leitner.

16) Update Arturo Borrero's email address in all source code headers.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 44 insertions, 34 deletions

diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 69230140215b..a4b97be30b28 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -75,10 +75,39 @@ struct nf_hook_ops {
 
 struct nf_hook_entry {
 	struct nf_hook_entry __rcu	*next;
-	struct nf_hook_ops		ops;
+	nf_hookfn			*hook;
+	void				*priv;
 	const struct nf_hook_ops	*orig_ops;
 };
 
+static inline void
+nf_hook_entry_init(struct nf_hook_entry *entry,	const struct nf_hook_ops *ops)
+{
+	entry->next = NULL;
+	entry->hook = ops->hook;
+	entry->priv = ops->priv;
+	entry->orig_ops = ops;
+}
+
+static inline int
+nf_hook_entry_priority(const struct nf_hook_entry *entry)
+{
+	return entry->orig_ops->priority;
+}
+
+static inline int
+nf_hook_entry_hookfn(const struct nf_hook_entry *entry, struct sk_buff *skb,
+		     struct nf_hook_state *state)
+{
+	return entry->hook(entry->priv, skb, state);
+}
+
+static inline const struct nf_hook_ops *
+nf_hook_entry_ops(const struct nf_hook_entry *entry)
+{
+	return entry->orig_ops;
+}
+
 static inline void nf_hook_state_init(struct nf_hook_state *p,
 				      unsigned int hook,
 				      u_int8_t pf,
diff --git a/include/linux/netfilter/nf_conntrack_dccp.h b/include/linux/netfilter/nf_conntrack_dccp.h
index 40dcc82058d1..ff721d7325cf 100644
--- a/include/linux/netfilter/nf_conntrack_dccp.h
+++ b/include/linux/netfilter/nf_conntrack_dccp.h
@@ -25,7 +25,7 @@ enum ct_dccp_roles {
 #define CT_DCCP_ROLE_MAX	(__CT_DCCP_ROLE_MAX - 1)
 
 #ifdef __KERNEL__
-#include <net/netfilter/nf_conntrack_tuple.h>
+#include <linux/netfilter/nf_conntrack_tuple_common.h>
 
 struct nf_ct_dccp {
 	u_int8_t	role[IP_CT_DIR_MAX];
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index cd4eaf8df445..5117e4d2ddfa 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -403,38 +403,14 @@ static inline unsigned long ifname_compare_aligned(const char *_a,
 	return ret;
 }
 
+struct xt_percpu_counter_alloc_state {
+	unsigned int off;
+	const char __percpu *mem;
+};
 
-/* On SMP, ip(6)t_entry->counters.pcnt holds address of the
- * real (percpu) counter.  On !SMP, its just the packet count,
- * so nothing needs to be done there.
- *
- * xt_percpu_counter_alloc returns the address of the percpu
- * counter, or 0 on !SMP. We force an alignment of 16 bytes
- * so that bytes/packets share a common cache line.
- *
- * Hence caller must use IS_ERR_VALUE to check for error, this
- * allows us to return 0 for single core systems without forcing
- * callers to deal with SMP vs. NONSMP issues.
- */
-static inline unsigned long xt_percpu_counter_alloc(void)
-{
-	if (nr_cpu_ids > 1) {
-		void __percpu *res = __alloc_percpu(sizeof(struct xt_counters),
-						    sizeof(struct xt_counters));
-
-		if (res == NULL)
-			return -ENOMEM;
-
-		return (__force unsigned long) res;
-	}
-
-	return 0;
-}
-static inline void xt_percpu_counter_free(u64 pcnt)
-{
-	if (nr_cpu_ids > 1)
-		free_percpu((void __percpu *) (unsigned long) pcnt);
-}
+bool xt_percpu_counter_alloc(struct xt_percpu_counter_alloc_state *state,
+			     struct xt_counters *counter);
+void xt_percpu_counter_free(struct xt_counters *cnt);
 
 static inline struct xt_counters *
 xt_get_this_cpu_counter(struct xt_counters *cnt)
diff --git a/include/linux/netfilter_ingress.h b/include/linux/netfilter_ingress.h
index 2dc3b49b804a..59476061de86 100644
--- a/include/linux/netfilter_ingress.h
+++ b/include/linux/netfilter_ingress.h
@@ -19,6 +19,7 @@ static inline int nf_hook_ingress(struct sk_buff *skb)
 {
 	struct nf_hook_entry *e = rcu_dereference(skb->dev->nf_hooks_ingress);
 	struct nf_hook_state state;
+	int ret;
 
 	/* Must recheck the ingress hook head, in the event it became NULL
 	 * after the check in nf_hook_ingress_active evaluated to true.
@@ -29,7 +30,11 @@ static inline int nf_hook_ingress(struct sk_buff *skb)
 	nf_hook_state_init(&state, NF_NETDEV_INGRESS,
 			   NFPROTO_NETDEV, skb->dev, NULL, NULL,
 			   dev_net(skb->dev), NULL);
-	return nf_hook_slow(skb, &state, e);
+	ret = nf_hook_slow(skb, &state, e);
+	if (ret == 0)
+		return -1;
+
+	return ret;
 }
 
 static inline void nf_hook_ingress_init(struct net_device *dev)