include/net/netfilter/nf_tables_core.h

   1 #ifndef _NET_NF_TABLES_CORE_H
   2 #define _NET_NF_TABLES_CORE_H
   3
   4 int nf_tables_core_module_init(void);
   5 void nf_tables_core_module_exit(void);
   6
   7 int nft_immediate_module_init(void);
   8 void nft_immediate_module_exit(void);
   9
  10 struct 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  */
  20 static 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
  26 extern const struct nft_expr_ops nft_cmp_fast_ops;
  27
  28 int nft_cmp_module_init(void);
  29 void nft_cmp_module_exit(void);
  30
  31 int nft_lookup_module_init(void);
  32 void nft_lookup_module_exit(void);
  33
  34 int nft_dynset_module_init(void);
  35 void nft_dynset_module_exit(void);
  36
  37 int nft_bitwise_module_init(void);
  38 void nft_bitwise_module_exit(void);
  39
  40 int nft_byteorder_module_init(void);
  41 void nft_byteorder_module_exit(void);
  42
  43 struct nft_payload {
  44         enum nft_payload_bases  base:8;
  45         u8                      offset;
  46         u8                      len;
  47         enum nft_registers      dreg:8;
  48 };
  49
  50 struct nft_payload_set {
  51         enum nft_payload_bases  base:8;
  52         u8                      offset;
  53         u8                      len;
  54         enum nft_registers      sreg:8;
  55         u8                      csum_type;
  56         u8                      csum_offset;
  57 };
  58
  59 extern const struct nft_expr_ops nft_payload_fast_ops;
  60 extern struct static_key_false nft_trace_enabled;
  61
  62 int nft_payload_module_init(void);
  63 void nft_payload_module_exit(void);
  64
  65 #endif /* _NET_NF_TABLES_CORE_H */