cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / netfilter / nfnetlink_compat.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/netfilter/nfnetlink_compat.h b/i686-linux-gnu-4.7/usr/include/linux/netfilter/nfnetlink_compat.h
new file mode 100644 (file)
index 0000000..ead7161
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/netfilter/nfnetlink_compat.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _NFNETLINK_COMPAT_H
+#define _NFNETLINK_COMPAT_H
+
+#include <linux/types.h>
+
+/* Old nfnetlink macros for userspace */
+
+/* nfnetlink groups: Up to 32 maximum */
+#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
+
+/* 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 {
+       __u16 nfa_len;
+       __u16 nfa_type; /* we use 15 bits for the type, and the highest
+                                * bit to indicate whether the payload is nested */
+};
+
+/* 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_pointer(skb); \
+       NFA_PUT(skb, (NFNL_NFA_NEST | type), 0, NULL); \
+       __start;  })
+#define NFA_NEST_END(skb, start) \
+({      (start)->nfa_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
+        (skb)->len; })
+#define NFA_NEST_CANCEL(skb, start) \
+({      if (start) \
+                skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
+        -1; })
+
+#define NFM_NFA(n)      ((struct nfattr *)(((char *)(n)) \
+        + NLMSG_ALIGN(sizeof(struct nfgenmsg))))
+#define NFM_PAYLOAD(n)  NLMSG_PAYLOAD(n, sizeof(struct nfgenmsg))
+
+#endif /* _NFNETLINK_COMPAT_H */