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 Netfilter/IPVS updates for net-next:

1) Add .release_ops to properly unroll .select_ops, use it from nft_compat.
   After this change, we can remove list of extensions too to simplify this
   codebase.

2) Update amanda conntrack helper to support v3.4, from Florian Tham.

3) Get rid of the obsolete BUGPRINT macro in ebtables, from
   Florian Westphal.

4) Merge IPv4 and IPv6 masquerading infrastructure into one single module.
   From Florian Westphal.

5) Patchset to remove nf_nat_l3proto structure to get rid of
   indirections, from Florian Westphal.

6) Skip unnecessary conntrack timeout updates in case the value is
   still the same, also from Florian Westphal.

7) Remove unnecessary 'fall through' comments in empty switch cases,
   from Li RongQing.

8) Fix lookup to fixed size hashtable sets on big endian with 32-bit keys.

9) Incorrect logic to deactivate path of fixed size hashtable sets,
   element was being tested to self.

10) Remove nft_hash_key(), the bitmap set is always selected for 16-bit
    keys.

11) Use boolean whenever possible in IPVS codebase, from Andrea Claudi.

12) Enter close state in conntrack if RST matches exact sequence number,
    from Florian Westphal.

13) Initialize dst_cache in tunnel extension, from wenxu.

14) Pass protocol as u16 to xt_check_match and xt_check_target, from
    Li RongQing.

15) SCTP header is granted to be in a linear area from IPVS NAT handler,
    from Xin Long.

16) Don't steal packets coming from slave VRF device from the
    ip_sabotage_in() path, from David Ahern.

17) Fix unsafe update of basechain stats, from Li RongQing.

18) Make sure CONNTRACK_LOCKS is power of 2 to let compiler optimize
    modulo operation as bitwise AND, from Li RongQing.

19) Use device_attribute instead of internal definition in the IDLETIMER
    target, from Sami Tolvanen.

20) Merge redir, masq and IPv4/IPv6 NAT chain types, from Florian Westphal.
====================

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

8 files changed, 49 insertions, 148 deletions

diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index b5aac5ae5129..5ee7b30b4917 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -190,23 +190,23 @@ bool nf_ct_get_tuplepr(const struct sk_buff *skb, unsigned int nhoff,
 
 void __nf_ct_refresh_acct(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
 			  const struct sk_buff *skb,
-			  unsigned long extra_jiffies, int do_acct);
+			  u32 extra_jiffies, bool do_acct);
 
 /* Refresh conntrack for this many jiffies and do accounting */
 static inline void nf_ct_refresh_acct(struct nf_conn *ct,
 				      enum ip_conntrack_info ctinfo,
 				      const struct sk_buff *skb,
-				      unsigned long extra_jiffies)
+				      u32 extra_jiffies)
 {
-	__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, 1);
+	__nf_ct_refresh_acct(ct, ctinfo, skb, extra_jiffies, true);
 }
 
 /* Refresh conntrack for this many jiffies */
 static inline void nf_ct_refresh(struct nf_conn *ct,
 				 const struct sk_buff *skb,
-				 unsigned long extra_jiffies)
+				 u32 extra_jiffies)
 {
-	__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, 0);
+	__nf_ct_refresh_acct(ct, 0, skb, extra_jiffies, false);
 }
 
 /* kill conntrack and do accounting */
diff --git a/include/net/netfilter/nf_nat.h b/include/net/netfilter/nf_nat.h
index 8aff77cafb8b..cf332c4e0b32 100644
--- a/include/net/netfilter/nf_nat.h
+++ b/include/net/netfilter/nf_nat.h
@@ -31,8 +31,7 @@ struct nf_conn;
 /* The structure embedded in the conntrack structure. */
 struct nf_conn_nat {
 	union nf_conntrack_nat_help help;
-#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV4) || \
-    IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV6)
+#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE)
 	int masq_index;
 #endif
 };
@@ -61,8 +60,7 @@ static inline bool nf_nat_oif_changed(unsigned int hooknum,
 				      struct nf_conn_nat *nat,
 				      const struct net_device *out)
 {
-#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV4) || \
-    IS_ENABLED(CONFIG_NF_NAT_MASQUERADE_IPV6)
+#if IS_ENABLED(CONFIG_NF_NAT_MASQUERADE)
 	return nat && nat->masq_index && hooknum == NF_INET_POST_ROUTING &&
 	       CTINFO2DIR(ctinfo) == IP_CT_DIR_ORIGINAL &&
 	       nat->masq_index != out->ifindex;
@@ -75,4 +73,43 @@ int nf_nat_register_fn(struct net *net, const struct nf_hook_ops *ops,
 		       const struct nf_hook_ops *nat_ops, unsigned int ops_count);
 void nf_nat_unregister_fn(struct net *net, const struct nf_hook_ops *ops,
 			  unsigned int ops_count);
+
+unsigned int nf_nat_packet(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
+			   unsigned int hooknum, struct sk_buff *skb);
+
+unsigned int nf_nat_manip_pkt(struct sk_buff *skb, struct nf_conn *ct,
+			      enum nf_nat_manip_type mtype,
+			      enum ip_conntrack_dir dir);
+void nf_nat_csum_recalc(struct sk_buff *skb,
+			u8 nfproto, u8 proto, void *data, __sum16 *check,
+			int datalen, int oldlen);
+
+int nf_nat_icmp_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
+				  enum ip_conntrack_info ctinfo,
+				  unsigned int hooknum);
+
+int nf_nat_icmpv6_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
+				    enum ip_conntrack_info ctinfo,
+				    unsigned int hooknum, unsigned int hdrlen);
+
+int nf_nat_ipv4_register_fn(struct net *net, const struct nf_hook_ops *ops);
+void nf_nat_ipv4_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
+
+int nf_nat_ipv6_register_fn(struct net *net, const struct nf_hook_ops *ops);
+void nf_nat_ipv6_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
+
+unsigned int
+nf_nat_inet_fn(void *priv, struct sk_buff *skb,
+	       const struct nf_hook_state *state);
+
+int nf_xfrm_me_harder(struct net *n, struct sk_buff *s, unsigned int family);
+
+static inline int nf_nat_initialized(struct nf_conn *ct,
+				     enum nf_nat_manip_type manip)
+{
+	if (manip == NF_NAT_MANIP_SRC)
+		return ct->status & IPS_SRC_NAT_DONE;
+	else
+		return ct->status & IPS_DST_NAT_DONE;
+}
 #endif
diff --git a/include/net/netfilter/nf_nat_core.h b/include/net/netfilter/nf_nat_core.h
deleted file mode 100644
index dc7cd0440229..000000000000
--- a/include/net/netfilter/nf_nat_core.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _NF_NAT_CORE_H
-#define _NF_NAT_CORE_H
-#include <linux/list.h>
-#include <net/netfilter/nf_conntrack.h>
-#include <net/netfilter/nf_nat.h>
-
-/* This header used to share core functionality between the standalone
-   NAT module, and the compatibility layer's use of NAT for masquerading. */
-
-unsigned int nf_nat_packet(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
-			   unsigned int hooknum, struct sk_buff *skb);
-
-unsigned int
-nf_nat_inet_fn(void *priv, struct sk_buff *skb,
-	       const struct nf_hook_state *state);
-
-int nf_xfrm_me_harder(struct net *net, struct sk_buff *skb, unsigned int family);
-
-static inline int nf_nat_initialized(struct nf_conn *ct,
-				     enum nf_nat_manip_type manip)
-{
-	if (manip == NF_NAT_MANIP_SRC)
-		return ct->status & IPS_SRC_NAT_DONE;
-	else
-		return ct->status & IPS_DST_NAT_DONE;
-}
-
-#endif /* _NF_NAT_CORE_H */
diff --git a/include/net/netfilter/nf_nat_l3proto.h b/include/net/netfilter/nf_nat_l3proto.h
deleted file mode 100644
index d774ca0c4c5e..000000000000
--- a/include/net/netfilter/nf_nat_l3proto.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _NF_NAT_L3PROTO_H
-#define _NF_NAT_L3PROTO_H
-
-struct nf_nat_l3proto {
-	u8	l3proto;
-
-	bool	(*manip_pkt)(struct sk_buff *skb,
-			     unsigned int iphdroff,
-			     const struct nf_conntrack_tuple *target,
-			     enum nf_nat_manip_type maniptype);
-
-	void	(*csum_update)(struct sk_buff *skb, unsigned int iphdroff,
-			       __sum16 *check,
-			       const struct nf_conntrack_tuple *t,
-			       enum nf_nat_manip_type maniptype);
-
-	void	(*csum_recalc)(struct sk_buff *skb, u8 proto,
-			       void *data, __sum16 *check,
-			       int datalen, int oldlen);
-
-	void	(*decode_session)(struct sk_buff *skb,
-				  const struct nf_conn *ct,
-				  enum ip_conntrack_dir dir,
-				  unsigned long statusbit,
-				  struct flowi *fl);
-
-	int	(*nlattr_to_range)(struct nlattr *tb[],
-				   struct nf_nat_range2 *range);
-};
-
-int nf_nat_l3proto_register(const struct nf_nat_l3proto *);
-void nf_nat_l3proto_unregister(const struct nf_nat_l3proto *);
-const struct nf_nat_l3proto *__nf_nat_l3proto_find(u8 l3proto);
-
-int nf_nat_icmp_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
-				  enum ip_conntrack_info ctinfo,
-				  unsigned int hooknum);
-
-int nf_nat_icmpv6_reply_translation(struct sk_buff *skb, struct nf_conn *ct,
-				    enum ip_conntrack_info ctinfo,
-				    unsigned int hooknum, unsigned int hdrlen);
-
-int nf_nat_l3proto_ipv4_register_fn(struct net *net, const struct nf_hook_ops *ops);
-void nf_nat_l3proto_ipv4_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
-
-int nf_nat_l3proto_ipv6_register_fn(struct net *net, const struct nf_hook_ops *ops);
-void nf_nat_l3proto_ipv6_unregister_fn(struct net *net, const struct nf_hook_ops *ops);
-
-#endif /* _NF_NAT_L3PROTO_H */
diff --git a/include/net/netfilter/nf_nat_l4proto.h b/include/net/netfilter/nf_nat_l4proto.h
deleted file mode 100644
index 95a4655bd1ad..000000000000
--- a/include/net/netfilter/nf_nat_l4proto.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* Header for use in defining a given protocol. */
-#ifndef _NF_NAT_L4PROTO_H
-#define _NF_NAT_L4PROTO_H
-#include <net/netfilter/nf_nat.h>
-#include <linux/netfilter/nfnetlink_conntrack.h>
-
-struct nf_nat_l3proto;
-
-/* Translate a packet to the target according to manip type.  Return on success. */
-bool nf_nat_l4proto_manip_pkt(struct sk_buff *skb,
-			      const struct nf_nat_l3proto *l3proto,
-			      unsigned int iphdroff, unsigned int hdroff,
-			      const struct nf_conntrack_tuple *tuple,
-			      enum nf_nat_manip_type maniptype);
-#endif /*_NF_NAT_L4PROTO_H*/
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index a66fcd316734..c331e96a713b 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -690,10 +690,12 @@ static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb,
 	gcb->elems[gcb->head.cnt++] = elem;
 }
 
+struct nft_expr_ops;
 /**
  *	struct nft_expr_type - nf_tables expression type
  *
  *	@select_ops: function to select nft_expr_ops
+ *	@release_ops: release nft_expr_ops
  *	@ops: default ops, used when no select_ops functions is present
  *	@list: used internally
  *	@name: Identifier
@@ -706,6 +708,7 @@ static inline void nft_set_gc_batch_add(struct nft_set_gc_batch *gcb,
 struct nft_expr_type {
 	const struct nft_expr_ops	*(*select_ops)(const struct nft_ctx *,
 						       const struct nlattr * const tb[]);
+	void				(*release_ops)(const struct nft_expr_ops *ops);
 	const struct nft_expr_ops	*ops;
 	struct list_head		list;
 	const char			*name;
diff --git a/include/net/netfilter/nft_masq.h b/include/net/netfilter/nft_masq.h
deleted file mode 100644
index e51ab3815797..000000000000
--- a/include/net/netfilter/nft_masq.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _NFT_MASQ_H_
-#define _NFT_MASQ_H_
-
-struct nft_masq {
-	u32			flags;
-	enum nft_registers      sreg_proto_min:8;
-	enum nft_registers      sreg_proto_max:8;
-};
-
-extern const struct nla_policy nft_masq_policy[];
-
-int nft_masq_init(const struct nft_ctx *ctx,
-		  const struct nft_expr *expr,
-		  const struct nlattr * const tb[]);
-
-int nft_masq_dump(struct sk_buff *skb, const struct nft_expr *expr);
-
-int nft_masq_validate(const struct nft_ctx *ctx, const struct nft_expr *expr,
-		      const struct nft_data **data);
-
-#endif /* _NFT_MASQ_H_ */
diff --git a/include/net/netfilter/nft_redir.h b/include/net/netfilter/nft_redir.h
deleted file mode 100644
index 4a970737c03c..000000000000
--- a/include/net/netfilter/nft_redir.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _NFT_REDIR_H_
-#define _NFT_REDIR_H_
-
-struct nft_redir {
-	enum nft_registers	sreg_proto_min:8;
-	enum nft_registers	sreg_proto_max:8;
-	u16			flags;
-};
-
-extern const struct nla_policy nft_redir_policy[];
-
-int nft_redir_init(const struct nft_ctx *ctx,
-		   const struct nft_expr *expr,
-		   const struct nlattr * const tb[]);
-
-int nft_redir_dump(struct sk_buff *skb, const struct nft_expr *expr);
-
-int nft_redir_validate(const struct nft_ctx *ctx, const struct nft_expr *expr,
-		       const struct nft_data **data);
-
-#endif /* _NFT_REDIR_H_ */