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authorPablo Neira Ayuso <pablo@netfilter.org>2014-06-10 10:53:01 +0200
committerPablo Neira Ayuso <pablo@netfilter.org>2014-06-16 13:07:44 +0200
commita0a7379e16b6e4c229d082f24c7e3ef9e812ed46 (patch)
tree5a7dc2ef6db3db90ae1a6807ebbaa6b9bdb627aa /include/net
parent5bc5c307653cbf8fe9da6cbd8ae6c6bd5b86ff4b (diff)
netfilter: nf_tables: use u32 for chain use counter
Since 4fefee5 ("netfilter: nf_tables: allow to delete several objects from a batch"), every new rule bumps the chain use counter. However, this is limited to 16 bits, which means that it will overrun after 2^16 rules. Use a u32 chain counter and check for overflows (just like we do for table objects). Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_tables.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index 7ee6ce6564a..713b0b88bd5 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -503,9 +503,9 @@ enum nft_chain_flags {
* @net: net namespace that this chain belongs to
* @table: table that this chain belongs to
* @handle: chain handle
- * @flags: bitmask of enum nft_chain_flags
* @use: number of jump references to this chain
* @level: length of longest path to this chain
+ * @flags: bitmask of enum nft_chain_flags
* @name: name of the chain
*/
struct nft_chain {
@@ -514,9 +514,9 @@ struct nft_chain {
struct net *net;
struct nft_table *table;
u64 handle;
- u8 flags;
- u16 use;
+ u32 use;
u16 level;
+ u8 flags;
char name[NFT_CHAIN_MAXNAMELEN];
};