Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
[firefly-linux-kernel-4.4.55.git] / include / uapi / linux / ipv6.h
1 #ifndef _UAPI_IPV6_H
2 #define _UAPI_IPV6_H
3
4 #include <linux/types.h>
5 #include <linux/in6.h>
6 #include <asm/byteorder.h>
7
8 /* The latest drafts declared increase in minimal mtu up to 1280. */
9
10 #define IPV6_MIN_MTU    1280
11
12 /*
13  *      Advanced API
14  *      source interface/address selection, source routing, etc...
15  *      *under construction*
16  */
17
18
19 struct in6_pktinfo {
20         struct in6_addr ipi6_addr;
21         int             ipi6_ifindex;
22 };
23
24 struct ip6_mtuinfo {
25         struct sockaddr_in6     ip6m_addr;
26         __u32                   ip6m_mtu;
27 };
28
29 struct in6_ifreq {
30         struct in6_addr ifr6_addr;
31         __u32           ifr6_prefixlen;
32         int             ifr6_ifindex; 
33 };
34
35 #define IPV6_SRCRT_STRICT       0x01    /* Deprecated; will be removed */
36 #define IPV6_SRCRT_TYPE_0       0       /* Deprecated; will be removed */
37 #define IPV6_SRCRT_TYPE_2       2       /* IPv6 type 2 Routing Header   */
38
39 /*
40  *      routing header
41  */
42 struct ipv6_rt_hdr {
43         __u8            nexthdr;
44         __u8            hdrlen;
45         __u8            type;
46         __u8            segments_left;
47
48         /*
49          *      type specific data
50          *      variable length field
51          */
52 };
53
54
55 struct ipv6_opt_hdr {
56         __u8            nexthdr;
57         __u8            hdrlen;
58         /* 
59          * TLV encoded option data follows.
60          */
61 } __attribute__((packed));      /* required for some archs */
62
63 #define ipv6_destopt_hdr ipv6_opt_hdr
64 #define ipv6_hopopt_hdr  ipv6_opt_hdr
65
66 /* Router Alert option values (RFC2711) */
67 #define IPV6_OPT_ROUTERALERT_MLD        0x0000  /* MLD(RFC2710) */
68
69 /*
70  *      routing header type 0 (used in cmsghdr struct)
71  */
72
73 struct rt0_hdr {
74         struct ipv6_rt_hdr      rt_hdr;
75         __u32                   reserved;
76         struct in6_addr         addr[0];
77
78 #define rt0_type                rt_hdr.type
79 };
80
81 /*
82  *      routing header type 2
83  */
84
85 struct rt2_hdr {
86         struct ipv6_rt_hdr      rt_hdr;
87         __u32                   reserved;
88         struct in6_addr         addr;
89
90 #define rt2_type                rt_hdr.type
91 };
92
93 /*
94  *      home address option in destination options header
95  */
96
97 struct ipv6_destopt_hao {
98         __u8                    type;
99         __u8                    length;
100         struct in6_addr         addr;
101 } __attribute__((packed));
102
103 /*
104  *      IPv6 fixed header
105  *
106  *      BEWARE, it is incorrect. The first 4 bits of flow_lbl
107  *      are glued to priority now, forming "class".
108  */
109
110 struct ipv6hdr {
111 #if defined(__LITTLE_ENDIAN_BITFIELD)
112         __u8                    priority:4,
113                                 version:4;
114 #elif defined(__BIG_ENDIAN_BITFIELD)
115         __u8                    version:4,
116                                 priority:4;
117 #else
118 #error  "Please fix <asm/byteorder.h>"
119 #endif
120         __u8                    flow_lbl[3];
121
122         __be16                  payload_len;
123         __u8                    nexthdr;
124         __u8                    hop_limit;
125
126         struct  in6_addr        saddr;
127         struct  in6_addr        daddr;
128 };
129
130
131 /* index values for the variables in ipv6_devconf */
132 enum {
133         DEVCONF_FORWARDING = 0,
134         DEVCONF_HOPLIMIT,
135         DEVCONF_MTU6,
136         DEVCONF_ACCEPT_RA,
137         DEVCONF_ACCEPT_REDIRECTS,
138         DEVCONF_AUTOCONF,
139         DEVCONF_DAD_TRANSMITS,
140         DEVCONF_RTR_SOLICITS,
141         DEVCONF_RTR_SOLICIT_INTERVAL,
142         DEVCONF_RTR_SOLICIT_DELAY,
143         DEVCONF_USE_TEMPADDR,
144         DEVCONF_TEMP_VALID_LFT,
145         DEVCONF_TEMP_PREFERED_LFT,
146         DEVCONF_REGEN_MAX_RETRY,
147         DEVCONF_MAX_DESYNC_FACTOR,
148         DEVCONF_MAX_ADDRESSES,
149         DEVCONF_FORCE_MLD_VERSION,
150         DEVCONF_ACCEPT_RA_DEFRTR,
151         DEVCONF_ACCEPT_RA_PINFO,
152         DEVCONF_ACCEPT_RA_RTR_PREF,
153         DEVCONF_RTR_PROBE_INTERVAL,
154         DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
155         DEVCONF_PROXY_NDP,
156         DEVCONF_OPTIMISTIC_DAD,
157         DEVCONF_ACCEPT_SOURCE_ROUTE,
158         DEVCONF_MC_FORWARDING,
159         DEVCONF_DISABLE_IPV6,
160         DEVCONF_ACCEPT_DAD,
161         DEVCONF_FORCE_TLLAO,
162         DEVCONF_NDISC_NOTIFY,
163         DEVCONF_MAX
164 };
165
166
167 #endif /* _UAPI_IPV6_H */