diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netfilter/nf_tables.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h index cff7b773e972..9d844354c4d9 100644 --- a/include/net/netfilter/nf_tables.h +++ b/include/net/netfilter/nf_tables.h @@ -180,6 +180,13 @@ static inline u64 nft_reg_load64(const u32 *sreg) return get_unaligned((u64 *)sreg); } +static inline bool nft_reg_overlap(u8 src, u8 dst, u32 len) +{ + unsigned int n = DIV_ROUND_UP(len, sizeof(u32)); + + return src != dst && src < dst + n && dst < src + n; +} + static inline void nft_data_copy(u32 *dst, const struct nft_data *src, unsigned int len) { |