diff options
| author | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-03-14 20:23:00 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2022-03-20 02:29:46 +0300 |
| commit | b2d306542ff935a4edf7a88ba8145c108193442a (patch) | |
| tree | 4c02a42b60c7c6305d11ac1838127795238e18e7 /include/net | |
| parent | 31d0bb9763efad30377505f3467f958d1ebe1e3d (diff) | |
| download | linux-b2d306542ff935a4edf7a88ba8145c108193442a.tar.xz | |
netfilter: nf_tables: do not reduce read-only expressions
Skip register tracking for expressions that perform read-only operations
on the registers. Define and use a cookie pointer NFT_REDUCE_READONLY to
avoid defining stubs for these expressions.
This patch re-enables register tracking which was disabled in ed5f85d42290
("netfilter: nf_tables: disable register tracking"). Follow up patches
add remaining register tracking for existing expressions.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/netfilter/nf_tables.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index c4c0861deac1..edabfb9e97ce 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -1633,4 +1633,12 @@ static inline struct nftables_pernet *nft_pernet(const struct net *net) return net_generic(net, nf_tables_net_id); } +#define __NFT_REDUCE_READONLY 1UL +#define NFT_REDUCE_READONLY (void *)__NFT_REDUCE_READONLY + +static inline bool nft_reduce_is_readonly(const struct nft_expr *expr) +{ + return expr->ops->reduce == NFT_REDUCE_READONLY; +} + #endif /* _NET_NF_TABLES_H */ |