linux_nfnetlink_compat.h File Reference

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Data Structures
struct	nfattr

Macros
#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
#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)
#define	NFA_NEXT(nfa, attrlen)
#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)
#define	NFA_NEST_END(skb, start)
#define	NFA_NEST_CANCEL(skb, start)
#define	NFM_NFA(n)
#define	NFM_PAYLOAD(n)   NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))

Macro Definition Documentation

#define NF_NETLINK_CONNTRACK_DESTROY   0x00000004

#define NF_NETLINK_CONNTRACK_EXP_DESTROY   0x00000020

#define NF_NETLINK_CONNTRACK_EXP_NEW   0x00000008

#define NF_NETLINK_CONNTRACK_EXP_UPDATE   0x00000010

#define NF_NETLINK_CONNTRACK_NEW   0x00000001

#define NF_NETLINK_CONNTRACK_UPDATE   0x00000002

#define NFA_ALIGN

(

len

)

(((len) + NFA_ALIGNTO - 1) & ~(NFA_ALIGNTO - 1))

#define NFA_ALIGNTO   4

#define NFA_DATA

(

nfa

)

((void *)(((char *)(nfa)) + NFA_LENGTH(0)))

#define NFA_LENGTH

(

len

)

(NFA_ALIGN(sizeof(struct nfattr)) + (len))

#define NFA_NEST	(		skb,
			type
	)

Value:

({  struct nfattr *__start = (struct nfattr *)skb_tail_pointer(skb); \
    NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \
    __start;  })

#define NFA_NEST_CANCEL	(		skb,
			start
	)

Value:

({      if (start) \
                skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
        -1; })

#define NFA_NEST_END	(		skb,
			start
	)

Value:

({      (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
        (skb)->len; })

#define NFA_NEXT	(		nfa,
			attrlen
	)

Value:

((attrlen) -= NFA_ALIGN((nfa)->nfa_len), \
    (struct nfattr *)(((char *)(nfa)) + NFA_ALIGN((nfa)->nfa_len)))

#define NFA_OK	(		nfa,
			len
	)

Value:

((len) > 0 && (nfa)->nfa_len >= sizeof(struct nfattr) \
    && (nfa)->nfa_len <= (len))

#define NFA_PAYLOAD

(

nfa

)

((int)((nfa)->nfa_len) - NFA_LENGTH(0))

#define NFA_SPACE

(

len

)

NFA_ALIGN(NFA_LENGTH(len))

#define NFA_TYPE

(

attr

)

((attr)->nfa_type & 0x7fff)

#define NFM_NFA

(

n

)

Value:

((struct nfattr *)(((char *)(n)) \
        + NLMSG_ALIGN(sizeof(struct nfgenmsg))))

#define NFM_PAYLOAD

(

n

)

NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))

#define NFNL_NFA_NEST   0x8000