http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/linux/netfilter/nfnetlink.h

#ifndef _NFNETLINK_H #define _NFNETLINK_H #include <linux/types.h> #ifndef __KERNEL__ /* nfnetlink groups: Up to 32 maximum - backwards compatibility for userspace */ #define NF_NETLINK_CONNTRACK_NEW 0x00000001 #define NF_NETLINK_CONNTRACK_UPDATE 0x00000002 #define NF_NETLINK_CONNTRACK_DESTROY 0x00000004 #define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008 #define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010 #define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020 #endif enum nfnetlink_groups { NFNLGRP_NONE, #define NFNLGRP_NONE NFNLGRP_NONE NFNLGRP_CONNTRACK_NEW, #define NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_NEW NFNLGRP_CONNTRACK_UPDATE, #define NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_UPDATE NFNLGRP_CONNTRACK_DESTROY, #define NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_DESTROY NFNLGRP_CONNTRACK_EXP_NEW, #define NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_NEW NFNLGRP_CONNTRACK_EXP_UPDATE, #define NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_UPDATE NFNLGRP_CONNTRACK_EXP_DESTROY, #define NFNLGRP_CONNTRACK_EXP_DESTROY NFNLGRP_CONNTRACK_EXP_DESTROY __NFNLGRP_MAX, }; #define NFNLGRP_MAX (__NFNLGRP_MAX - 1) /* Generic structure for encapsulation optional netfilter information. * It is reminiscent of sockaddr, but with sa_family replaced * with attribute type. * ! This should someday be put somewhere generic as now rtnetlink and * ! nfnetlink use the same attributes methods. - J. Schulist. */ struct nfattr { u_int16_t nfa_len; u_int16_t nfa_type; /* we use 15 bits for the type, and the highest * bit to indicate whether the payload is nested */ } __attribute__ ((packed)); /* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from * rtnetlink.h, it's time to put this in a generic file */ #define NFNL_NFA_NEST 0x8000 #define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff) #define NFA_ALIGNTO 4 #define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1)) #define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \ && (nfa)->nfa_len <= (len)) #define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \ (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len))) #define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len)) #define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len)) #define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0))) #define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0)) #define NFA_NEST(skb, type) \ ({ struct nfattr *__start = (struct nfattr *) (skb)->tail; \ NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \ __start; }) #define NFA_NEST_END(skb, start) \ ({ (start)->nfa_len = ((skb)->tail - (unsigned char *) (start)); \ (skb)->len; }) #define NFA_NEST_CANCEL(skb, start) \ ({ if (start) \ skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ -1; }) /* General form of address family dependent message. */ struct nfgenmsg { u_int8_t nfgen_family; /* AF_xxx */ u_int8_t version; /* nfnetlink version */ u_int16_t res_id; /* resource id */ } __attribute__ ((packed)); #define NFNETLINK_V0 0 #define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) \ + NLMSG_ALIGN(sizeof(struct nfgenmsg)))) #define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg)) /* netfilter netlink message types are split in two pieces: * 8 bit subsystem, 8bit operation. */ #define NFNL_SUBSYS_ID(x) ((x & 0xff00) >> 8) #define NFNL_MSG_TYPE(x) (x & 0x00ff) /* No enum here, otherwise __stringify() trick of MODULE_ALIAS_NFNL_SUBSYS() * won't work anymore */ #define NFNL_SUBSYS_NONE 0 #define NFNL_SUBSYS_CTNETLINK 1 #define NFNL_SUBSYS_CTNETLINK_EXP 2 #define NFNL_SUBSYS_QUEUE 3 #define NFNL_SUBSYS_ULOG 4 #define NFNL_SUBSYS_COUNT 5 #ifdef __KERNEL__ #include <linux/netlink.h> #include <linux/capability.h> struct nfnl_callback { int (*call)(struct sock *nl, struct sk_buff *skb, struct nlmsghdr *nlh, struct nfattr *cda[], int *errp); u_int16_t attr_count; /* number of nfattr's */ }; struct nfnetlink_subsystem { const char *name; __u8 subsys_id; /* nfnetlink subsystem ID */ __u8 cb_count; /* number of callbacks */ struct nfnl_callback *cb; /* callback for individual types */ }; extern void __nfa_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); #define NFA_PUT(skb, attrtype, attrlen, data) \ ({ if (skb_tailroom(skb) < (int)NFA_SPACE(attrlen)) goto nfattr_failure; \ __nfa_fill(skb, attrtype, attrlen, data); }) extern struct semaphore nfnl_sem; #define nfnl_shlock() down(&nfnl_sem) #define nfnl_shlock_nowait() down_trylock(&nfnl_sem) #define nfnl_shunlock() do { up(&nfnl_sem); \ if(nfnl && nfnl->sk_receive_queue.qlen) \ nfnl->sk_data_ready(nfnl, 0); \ } while(0) extern void nfnl_lock(void); extern void nfnl_unlock(void); extern int nfnetlink_subsys_register(struct nfnetlink_subsystem *n); extern int nfnetlink_subsys_unregister(struct nfnetlink_subsystem *n); extern void nfattr_parse(struct nfattr *tb[], int maxattr, struct nfattr *nfa, int len); #define nfattr_parse_nested(tb, max, nfa) \ nfattr_parse((tb), (max), NFA_DATA((nfa)), NFA_PAYLOAD((nfa))) #define nfattr_bad_size(tb, max, cta_min) \ ({ int __i, __res = 0; \ for (__i=0; __i<max; __i++) { \ if (!cta_min[__i]) \ continue; \ if (tb[__i] && NFA_PAYLOAD(tb[__i]) < cta_min[__i]){ \ __res = 1; \ break; \ } \ } \ __res; \ }) extern int nfnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, int echo); extern int nfnetlink_unicast(struct sk_buff *skb, u_int32_t pid, int flags); #define MODULE_ALIAS_NFNL_SUBSYS(subsys) \ MODULE_ALIAS("nfnetlink-subsys-" __stringify(subsys)) #endif /* __KERNEL__ */ #endif /* _NFNETLINK_H */