include/uapi/linux/netfilter/xt_policy.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _XT_POLICY_H
   3 #define _XT_POLICY_H
   4
   5 #include <linux/types.h>
   6 #include <linux/in.h>
   7 #include <linux/in6.h>
   8
   9 #define XT_POLICY_MAX_ELEM      4
  10
  11 enum xt_policy_flags {
  12         XT_POLICY_MATCH_IN      = 0x1,
  13         XT_POLICY_MATCH_OUT     = 0x2,
  14         XT_POLICY_MATCH_NONE    = 0x4,
  15         XT_POLICY_MATCH_STRICT  = 0x8,
  16 };
  17
  18 enum xt_policy_modes {
  19         XT_POLICY_MODE_TRANSPORT,
  20         XT_POLICY_MODE_TUNNEL
  21 };
  22
  23 struct xt_policy_spec {
  24         __u8    saddr:1,
  25                         daddr:1,
  26                         proto:1,
  27                         mode:1,
  28                         spi:1,
  29                         reqid:1;
  30 };
  31
  32 #ifndef __KERNEL__
  33 union xt_policy_addr {
  34         struct in_addr  a4;
  35         struct in6_addr a6;
  36 };
  37 #endif
  38
  39 struct xt_policy_elem {
  40         union {
  41 #ifdef __KERNEL__
  42                 struct {
  43                         union nf_inet_addr saddr;
  44                         union nf_inet_addr smask;
  45                         union nf_inet_addr daddr;
  46                         union nf_inet_addr dmask;
  47                 };
  48 #else
  49                 struct {
  50                         union xt_policy_addr saddr;
  51                         union xt_policy_addr smask;
  52                         union xt_policy_addr daddr;
  53                         union xt_policy_addr dmask;
  54                 };
  55 #endif
  56         };
  57         __be32                  spi;
  58         __u32           reqid;
  59         __u8            proto;
  60         __u8            mode;
  61
  62         struct xt_policy_spec   match;
  63         struct xt_policy_spec   invert;
  64 };
  65
  66 struct xt_policy_info {
  67         struct xt_policy_elem pol[XT_POLICY_MAX_ELEM];
  68         __u16 flags;
  69         __u16 len;
  70 };
  71
  72 #endif /* _XT_POLICY_H */