projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| df6fb868 PM |
1 | #ifndef _NFNETLINK_COMPAT_H |
| 2 | #define _NFNETLINK_COMPAT_H | |
| 3 | #ifndef __KERNEL | |
| 4 | /* Old nfnetlink macros for userspace */ | |
| 5 | ||
| 6 | /* nfnetlink groups: Up to 32 maximum */ | |
| 7 | #define NF_NETLINK_CONNTRACK_NEW 0x00000001 | |
| 8 | #define NF_NETLINK_CONNTRACK_UPDATE 0x00000002 | |
| 9 | #define NF_NETLINK_CONNTRACK_DESTROY 0x00000004 | |
| 10 | #define NF_NETLINK_CONNTRACK_EXP_NEW 0x00000008 | |
| 11 | #define NF_NETLINK_CONNTRACK_EXP_UPDATE 0x00000010 | |
| 12 | #define NF_NETLINK_CONNTRACK_EXP_DESTROY 0x00000020 | |
| 13 | ||
| 14 | /* Generic structure for encapsulation optional netfilter information. | |
| 15 | * It is reminiscent of sockaddr, but with sa_family replaced | |
| 16 | * with attribute type. | |
| 17 | * ! This should someday be put somewhere generic as now rtnetlink and | |
| 18 | * ! nfnetlink use the same attributes methods. - J. Schulist. | |
| 19 | */ | |
| 20 | ||
| 21 | struct nfattr | |
| 22 | { | |
| 23 | u_int16_t nfa_len; | |
| 24 | u_int16_t nfa_type; /* we use 15 bits for the type, and the highest | |
| 25 | * bit to indicate whether the payload is nested */ | |
| 26 | }; | |
| 27 | ||
| 28 | /* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from | |
| 29 | * rtnetlink.h, it's time to put this in a generic file */ | |
| 30 | ||
| 31 | #define NFNL_NFA_NEST 0x8000 | |
| 32 | #define NFA_TYPE(attr) ((attr)->nfa_type & 0x7fff) | |
| 33 | ||
| 34 | #define NFA_ALIGNTO 4 | |
| 35 | #define NFA_ALIGN(len) (((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1)) | |
| 36 | #define NFA_OK(nfa,len) ((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \ | |
| 37 | && (nfa)->nfa_len <= (len)) | |
| 38 | #define NFA_NEXT(nfa,attrlen) ((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \ | |
| 39 | (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len))) | |
| 40 | #define NFA_LENGTH(len) (NFA_ALIGN(sizeof(struct nfattr)) + (len)) | |
| 41 | #define NFA_SPACE(len) NFA_ALIGN(NFA_LENGTH(len)) | |
| 42 | #define NFA_DATA(nfa) ((void *)(((char *)(nfa)) + NFA_LENGTH(0))) | |
| 43 | #define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0)) | |
| 44 | #define NFA_NEST(skb, type) \ | |
| 45 | ({ struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \ | |
| 46 | NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \ | |
| 47 | __start; }) | |
| 48 | #define NFA_NEST_END(skb, start) \ | |
| 49 | ({ (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ | |
| 50 | (skb)->len; }) | |
| 51 | #define NFA_NEST_CANCEL(skb, start) \ | |
| 52 | ({ if (start) \ | |
| 53 | skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ | |
| 54 | -1; }) | |
| 55 | ||
| 56 | #define NFM_NFA(n) ((struct nfattr *)(((char *)(n)) \ | |
| 57 | + NLMSG_ALIGN(sizeof(struct nfgenmsg)))) | |
| 58 | #define NFM_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg)) | |
| 59 | ||
| 60 | #endif /* ! __KERNEL__ */ | |
| 61 | #endif /* _NFNETLINK_COMPAT_H */ |