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33f11d16 TH |
1 | /* |
2 | * Copyright (c) 2015 Tom Herbert <tom@herbertland.com> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License as | |
6 | * published by the Free Software Foundation; either version 2 of | |
7 | * the License, or (at your option) any later version. | |
8 | * | |
9 | */ | |
10 | ||
11 | #ifndef __ILA_H | |
12 | #define __ILA_H | |
13 | ||
14 | #include <linux/errno.h> | |
15 | #include <linux/ip.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/socket.h> | |
19 | #include <linux/skbuff.h> | |
20 | #include <linux/types.h> | |
21 | #include <net/checksum.h> | |
22 | #include <net/ip.h> | |
23 | #include <net/protocol.h> | |
24 | #include <uapi/linux/ila.h> | |
25 | ||
351596aa TH |
26 | struct ila_locator { |
27 | union { | |
28 | __u8 v8[8]; | |
29 | __be16 v16[4]; | |
30 | __be32 v32[2]; | |
31 | __be64 v64; | |
32 | }; | |
33 | }; | |
34 | ||
35 | struct ila_identifier { | |
36 | union { | |
37 | struct { | |
38 | #if defined(__LITTLE_ENDIAN_BITFIELD) | |
39 | u8 __space:5; | |
40 | u8 type:3; | |
41 | #elif defined(__BIG_ENDIAN_BITFIELD) | |
42 | u8 type:3; | |
43 | u8 __space:5; | |
44 | #else | |
45 | #error "Adjust your <asm/byteorder.h> defines" | |
46 | #endif | |
47 | u8 __space2[7]; | |
48 | }; | |
49 | __u8 v8[8]; | |
50 | __be16 v16[4]; | |
51 | __be32 v32[2]; | |
52 | __be64 v64; | |
53 | }; | |
54 | }; | |
55 | ||
56 | enum { | |
57 | ILA_ATYPE_IID = 0, | |
58 | ILA_ATYPE_LUID, | |
59 | ILA_ATYPE_VIRT_V4, | |
60 | ILA_ATYPE_VIRT_UNI_V6, | |
61 | ILA_ATYPE_VIRT_MULTI_V6, | |
62 | ILA_ATYPE_RSVD_1, | |
63 | ILA_ATYPE_RSVD_2, | |
64 | ILA_ATYPE_RSVD_3, | |
65 | }; | |
66 | ||
67 | struct ila_addr { | |
68 | union { | |
69 | struct in6_addr addr; | |
70 | struct { | |
71 | struct ila_locator loc; | |
72 | struct ila_identifier ident; | |
73 | }; | |
74 | }; | |
75 | }; | |
76 | ||
77 | static inline struct ila_addr *ila_a2i(struct in6_addr *addr) | |
78 | { | |
79 | return (struct ila_addr *)addr; | |
80 | } | |
81 | ||
82 | static inline bool ila_addr_is_ila(struct ila_addr *iaddr) | |
83 | { | |
84 | return (iaddr->ident.type != ILA_ATYPE_IID); | |
85 | } | |
86 | ||
33f11d16 | 87 | struct ila_params { |
351596aa TH |
88 | struct ila_locator locator; |
89 | struct ila_locator locator_match; | |
33f11d16 TH |
90 | __wsum csum_diff; |
91 | }; | |
92 | ||
93 | static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to) | |
94 | { | |
95 | __be32 diff[] = { | |
96 | ~from[0], ~from[1], to[0], to[1], | |
97 | }; | |
98 | ||
99 | return csum_partial(diff, sizeof(diff), 0); | |
100 | } | |
101 | ||
351596aa | 102 | void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p); |
33f11d16 TH |
103 | |
104 | int ila_lwt_init(void); | |
105 | void ila_lwt_fini(void); | |
7f00feaf TH |
106 | int ila_xlat_init(void); |
107 | void ila_xlat_fini(void); | |
33f11d16 TH |
108 | |
109 | #endif /* __ILA_H */ |