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Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

nfnetlink_compat.h (2444B)

    

  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
  2. #ifndef _NFNETLINK_COMPAT_H
  3. #define _NFNETLINK_COMPAT_H
  5. #include <linux/types.h>
  7. /* Old nfnetlink macros for userspace */
  9. /* nfnetlink groups: Up to 32 maximum */
  10. #define NF_NETLINK_CONNTRACK_NEW 		0x00000001
  11. #define NF_NETLINK_CONNTRACK_UPDATE		0x00000002
  12. #define NF_NETLINK_CONNTRACK_DESTROY		0x00000004
  13. #define NF_NETLINK_CONNTRACK_EXP_NEW		0x00000008
  14. #define NF_NETLINK_CONNTRACK_EXP_UPDATE		0x00000010
  15. #define NF_NETLINK_CONNTRACK_EXP_DESTROY	0x00000020
  17. /* Generic structure for encapsulation optional netfilter information.
  18.  * It is reminiscent of sockaddr, but with sa_family replaced
  19.  * with attribute type.
  20.  * ! This should someday be put somewhere generic as now rtnetlink and
  21.  * ! nfnetlink use the same attributes methods. - J. Schulist.
  22.  */
  24. struct nfattr {
  25. 	__u16 nfa_len;
  26. 	__u16 nfa_type;	/* we use 15 bits for the type, and the highest
  27. 				 * bit to indicate whether the payload is nested */
  28. };
  30. /* FIXME: Apart from NFNL_NFA_NESTED shamelessly copy and pasted from
  31.  * rtnetlink.h, it's time to put this in a generic file */
  33. #define NFNL_NFA_NEST	0x8000
  34. #define NFA_TYPE(attr) 	((attr)->nfa_type & 0x7fff)
  36. #define NFA_ALIGNTO     4
  37. #define NFA_ALIGN(len)	(((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))
  38. #define NFA_OK(nfa,len)	((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \
  39. 	&& (nfa)->nfa_len <= (len))
  40. #define NFA_NEXT(nfa,attrlen)	((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \
  41. 	(struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))
  42. #define NFA_LENGTH(len)	(NFA_ALIGN(sizeof(struct nfattr)) + (len))
  43. #define NFA_SPACE(len)	NFA_ALIGN(NFA_LENGTH(len))
  44. #define NFA_DATA(nfa)   ((void *)(((char *)(nfa)) + NFA_LENGTH(0)))
  45. #define NFA_PAYLOAD(nfa) ((int)((nfa)->nfa_len) - NFA_LENGTH(0))
  46. #define NFA_NEST(skb, type) \
  47. ({	struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \
  48. 	NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \
  49. 	__start;  })
  50. #define NFA_NEST_END(skb, start) \
  51. ({      (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
  52.         (skb)->len; })
  53. #define NFA_NEST_CANCEL(skb, start) \
  54. ({      if (start) \
  55.                 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
  56.         -1; })
  58. #define NFM_NFA(n)      ((struct nfattr *)(((char *)(n)) \
  59.         + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
  60. #define NFM_PAYLOAD(n)  NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
  62. #endif /* _NFNETLINK_COMPAT_H */