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| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2014-06-10 10:53:01 +0200 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2014-06-16 13:07:44 +0200 |
| commit | a0a7379e16b6e4c229d082f24c7e3ef9e812ed46 (patch) | |
| tree | 5a7dc2ef6db3db90ae1a6807ebbaa6b9bdb627aa /include/net | |
| parent | 5bc5c307653cbf8fe9da6cbd8ae6c6bd5b86ff4b (diff) | |
| download | linux-a0a7379e16b6e4c229d082f24c7e3ef9e812ed46.tar.bz2 | |
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.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index 7ee6ce6564ae..713b0b88bd5a 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]; }; |