LXR linux/include/net/netfilter/nf_tables

   1#ifndef _NET_NF_TABLES_CORE_H
   2#define _NET_NF_TABLES_CORE_H
   3
   4int nf_tables_core_module_init(void);
   5void nf_tables_core_module_exit(void);
   6
   7int nft_immediate_module_init(void);
   8void nft_immediate_module_exit(void);
   9
  10struct nft_cmp_fast_expr {
  11        u32                     data;
  12        enum nft_registers      sreg:8;
  13        u8                      len;
  14};
  15
  16/* Calculate the mask for the nft_cmp_fast expression. On big endian the
  17 * mask needs to include the *upper* bytes when interpreting that data as
  18 * something smaller than the full u32, therefore a cpu_to_le32 is done.
  19 */
  20static inline u32 nft_cmp_fast_mask(unsigned int len)
  21{
  22        return cpu_to_le32(~0U >> (FIELD_SIZEOF(struct nft_cmp_fast_expr,
  23                                                data) * BITS_PER_BYTE - len));
  24}
  25
  26extern const struct nft_expr_ops nft_cmp_fast_ops;
  27
  28int nft_cmp_module_init(void);
  29void nft_cmp_module_exit(void);
  30
  31int nft_lookup_module_init(void);
  32void nft_lookup_module_exit(void);
  33
  34int nft_dynset_module_init(void);
  35void nft_dynset_module_exit(void);
  36
  37int nft_bitwise_module_init(void);
  38void nft_bitwise_module_exit(void);
  39
  40int nft_byteorder_module_init(void);
  41void nft_byteorder_module_exit(void);
  42
  43struct nft_payload {
  44        enum nft_payload_bases  base:8;
  45        u8                      offset;
  46        u8                      len;
  47        enum nft_registers      dreg:8;
  48};
  49
  50extern const struct nft_expr_ops nft_payload_fast_ops;
  51
  52int nft_payload_module_init(void);
  53void nft_payload_module_exit(void);
  54
  55#endif /* _NET_NF_TABLES_CORE_H */
  56