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

Pablo Neira Ayuso says:

====================
netfilter fixes for net

The following patchset contains netfilter fixes for your net tree,
they are:

1) Fix missing MODULE_LICENSE() in the new nf_reject_ipv{4,6} modules.

2) Restrict nat and masq expressions to the nat chain type. Otherwise,
   users may crash their kernel if they attach a nat/masq rule to a non
   nat chain.

3) Fix hook validation in nft_compat when non-base chains are used.
   Basically, initialize hook_mask to zero.

4) Make sure you use match/targets in nft_compat from the right chain
   type. The existing validation relies on the table name which can be
   avoided by

5) Better netlink attribute validation in nft_nat. This expression has
   to reject the configuration when no address and proto configurations
   are specified.

6) Interpret NFTA_NAT_REG_*_MAX if only if NFTA_NAT_REG_*_MIN is set.
   Yet another sanity check to reject incorrect configurations from
   userspace.

7) Conditional NAT attribute dumping depending on the existing
   configuration.
====================

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

2 files changed, 6 insertions, 0 deletions

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 3d7292392fac..845c596bf594 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -530,6 +530,9 @@ enum nft_chain_type {
 	NFT_CHAIN_T_MAX
 };
 
+int nft_chain_validate_dependency(const struct nft_chain *chain,
+				  enum nft_chain_type type);
+
 struct nft_stats {
 	u64			bytes;
 	u64			pkts;
diff --git a/include/net/netfilter/nft_masq.h b/include/net/netfilter/nft_masq.h
index c72729f954f4..e2a518b60e19 100644
--- a/include/net/netfilter/nft_masq.h
+++ b/include/net/netfilter/nft_masq.h
@@ -13,4 +13,7 @@ int nft_masq_init(const struct nft_ctx *ctx,
 
 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_ */