1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef _NFNETLINK_H 13 #define _NFNETLINK_H 14 #include <linux/types.h> 15 16 #define NF_NETLINK_CONNTRACK_NEW 0x00000001 17 #define NF_NETLINK_CONNTRACK_UPDATE 0x00000002 18 #define NF_NETLINK_CONNTRACK_DESTROY 0x00000004 19 #define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008 20 #define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010 21 #define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020 22 23 enum nfnetlink_groups { 24 NFNLGRP_NONE, 25 #define NFNLGRP_NONE NFNLGRP_NONE 26 NFNLGRP_CONNTRACK_NEW, 27 #define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW 28 NFNLGRP_CONNTRACK_UPDATE, 29 #define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE 30 NFNLGRP_CONNTRACK_DESTROY, 31 #define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY 32 NFNLGRP_CONNTRACK_EXP_NEW, 33 #define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW 34 NFNLGRP_CONNTRACK_EXP_UPDATE, 35 #define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE 36 NFNLGRP_CONNTRACK_EXP_DESTROY, 37 #define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY 38 __NFNLGRP_MAX, 39 }; 40 #define NFNLGRP_MAX (__NFNLGRP_MAX - 1) 41 42 struct nfattr 43 { 44 u_int16_t nfa_len; 45 u_int16_t nfa_type; 46 } __attribute__ ((packed)); 47 48 #define NFNL_NFA_NEST 0x8000 49 #define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff) 50 51 #define NFA_ALIGNTO 4 52 #define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1)) 53 #define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) && (nfa)->nfa_len <= (len)) 54 #define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len))) 55 #define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len)) 56 #define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len)) 57 #define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0))) 58 #define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0)) 59 #define NFA_NEST(skb, type) ({ struct nfattr *__start = (struct nfattr *) (skb)->tail; NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); __start; }) 60 #define NFA_NEST_END(skb, start) ({ (start)->nfa_len = ((skb)->tail - (unsigned char *) (start)); (skb)->len; }) 61 #define NFA_NEST_CANCEL(skb, start) ({ if (start) skb_trim(skb, (unsigned char *) (start) - (skb)->data); -1; }) 62 63 struct nfgenmsg { 64 u_int8_t nfgen_family; 65 u_int8_t version; 66 u_int16_t res_id; 67 } __attribute__ ((packed)); 68 69 #define NFNETLINK_V0 0 70 71 #define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) + NLMSG_ALIGN(sizeof(struct nfgenmsg)))) 72 #define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg)) 73 74 #define NFNL_SUBSYS_ID(x) ((x & 0xff00) >> 8) 75 #define NFNL_MSG_TYPE(x) (x & 0x00ff) 76 77 #define NFNL_SUBSYS_NONE 0 78 #define NFNL_SUBSYS_CTNETLINK 1 79 #define NFNL_SUBSYS_CTNETLINK_EXP 2 80 #define NFNL_SUBSYS_QUEUE 3 81 #define NFNL_SUBSYS_ULOG 4 82 #define NFNL_SUBSYS_COUNT 5 83 84 #endif 85
