include/uapi/linux/netfilter/nfnetlink_hook.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _NFNL_HOOK_H_
   3 #define _NFNL_HOOK_H_
   4
   5 enum nfnl_hook_msg_types {
   6         NFNL_MSG_HOOK_GET,
   7         NFNL_MSG_HOOK_MAX,
   8 };
   9
  10 /**
  11  * enum nfnl_hook_attributes - netfilter hook netlink attributes
  12  *
  13  * @NFNLA_HOOK_HOOKNUM: netfilter hook number (NLA_U32)
  14  * @NFNLA_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
  15  * @NFNLA_HOOK_DEV: netdevice name (NLA_STRING)
  16  * @NFNLA_HOOK_FUNCTION_NAME: hook function name (NLA_STRING)
  17  * @NFNLA_HOOK_MODULE_NAME: kernel module that registered this hook (NLA_STRING)
  18  * @NFNLA_HOOK_CHAIN_INFO: basechain hook metadata (NLA_NESTED)
  19  */
  20 enum nfnl_hook_attributes {
  21         NFNLA_HOOK_UNSPEC,
  22         NFNLA_HOOK_HOOKNUM,
  23         NFNLA_HOOK_PRIORITY,
  24         NFNLA_HOOK_DEV,
  25         NFNLA_HOOK_FUNCTION_NAME,
  26         NFNLA_HOOK_MODULE_NAME,
  27         NFNLA_HOOK_CHAIN_INFO,
  28         __NFNLA_HOOK_MAX
  29 };
  30 #define NFNLA_HOOK_MAX          (__NFNLA_HOOK_MAX - 1)
  31
  32 /**
  33  * enum nfnl_hook_chain_info_attributes - chain description
  34  *
  35  * @NFNLA_HOOK_INFO_DESC: nft chain and table name (NLA_NESTED)
  36  * @NFNLA_HOOK_INFO_TYPE: chain type (enum nfnl_hook_chaintype) (NLA_U32)
  37  *
  38  * NFNLA_HOOK_INFO_DESC depends on NFNLA_HOOK_INFO_TYPE value:
  39  *   NFNL_HOOK_TYPE_NFTABLES: enum nft_table_attributes
  40  *   NFNL_HOOK_TYPE_BPF: enum nfnl_hook_bpf_attributes
  41  */
  42 enum nfnl_hook_chain_info_attributes {
  43         NFNLA_HOOK_INFO_UNSPEC,
  44         NFNLA_HOOK_INFO_DESC,
  45         NFNLA_HOOK_INFO_TYPE,
  46         __NFNLA_HOOK_INFO_MAX,
  47 };
  48 #define NFNLA_HOOK_INFO_MAX (__NFNLA_HOOK_INFO_MAX - 1)
  49
  50 enum nfnl_hook_chain_desc_attributes {
  51         NFNLA_CHAIN_UNSPEC,
  52         NFNLA_CHAIN_TABLE,
  53         NFNLA_CHAIN_FAMILY,
  54         NFNLA_CHAIN_NAME,
  55         __NFNLA_CHAIN_MAX,
  56 };
  57 #define NFNLA_CHAIN_MAX (__NFNLA_CHAIN_MAX - 1)
  58
  59 /**
  60  * enum nfnl_hook_chaintype - chain type
  61  *
  62  * @NFNL_HOOK_TYPE_NFTABLES: nf_tables base chain
  63  * @NFNL_HOOK_TYPE_BPF: bpf program
  64  */
  65 enum nfnl_hook_chaintype {
  66         NFNL_HOOK_TYPE_NFTABLES = 0x1,
  67         NFNL_HOOK_TYPE_BPF,
  68 };
  69
  70 /**
  71  * enum nfnl_hook_bpf_attributes - bpf prog description
  72  *
  73  * @NFNLA_HOOK_BPF_ID: bpf program id (NLA_U32)
  74  */
  75 enum nfnl_hook_bpf_attributes {
  76         NFNLA_HOOK_BPF_UNSPEC,
  77         NFNLA_HOOK_BPF_ID,
  78         __NFNLA_HOOK_BPF_MAX,
  79 };
  80 #define NFNLA_HOOK_BPF_MAX (__NFNLA_HOOK_BPF_MAX - 1)
  81
  82 #endif /* _NFNL_HOOK_H */