1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* 2 /*
3 * Copyright (c) 2015 Tom Herbert <tom@herbert 3 * Copyright (c) 2015 Tom Herbert <tom@herbertland.com>
4 */ 4 */
5 5
6 #ifndef __ILA_H 6 #ifndef __ILA_H
7 #define __ILA_H 7 #define __ILA_H
8 8
9 #include <linux/errno.h> 9 #include <linux/errno.h>
10 #include <linux/ip.h> 10 #include <linux/ip.h>
11 #include <linux/kernel.h> 11 #include <linux/kernel.h>
12 #include <linux/module.h> 12 #include <linux/module.h>
13 #include <linux/socket.h> 13 #include <linux/socket.h>
14 #include <linux/skbuff.h> 14 #include <linux/skbuff.h>
15 #include <linux/types.h> 15 #include <linux/types.h>
16 #include <net/checksum.h> 16 #include <net/checksum.h>
17 #include <net/genetlink.h> 17 #include <net/genetlink.h>
18 #include <net/ip.h> 18 #include <net/ip.h>
19 #include <net/protocol.h> 19 #include <net/protocol.h>
20 #include <uapi/linux/ila.h> 20 #include <uapi/linux/ila.h>
21 21
22 struct ila_locator { 22 struct ila_locator {
23 union { 23 union {
24 __u8 v8[8]; 24 __u8 v8[8];
25 __be16 v16[4]; 25 __be16 v16[4];
26 __be32 v32[2]; 26 __be32 v32[2];
27 __be64 v64; 27 __be64 v64;
28 }; 28 };
29 }; 29 };
30 30
31 struct ila_identifier { 31 struct ila_identifier {
32 union { 32 union {
33 struct { 33 struct {
34 #if defined(__LITTLE_ENDIAN_BITFIELD) 34 #if defined(__LITTLE_ENDIAN_BITFIELD)
35 u8 __space:4; 35 u8 __space:4;
36 u8 csum_neutral:1; 36 u8 csum_neutral:1;
37 u8 type:3; 37 u8 type:3;
38 #elif defined(__BIG_ENDIAN_BITFIELD) 38 #elif defined(__BIG_ENDIAN_BITFIELD)
39 u8 type:3; 39 u8 type:3;
40 u8 csum_neutral:1; 40 u8 csum_neutral:1;
41 u8 __space:4; 41 u8 __space:4;
42 #else 42 #else
43 #error "Adjust your <asm/byteorder.h> defines 43 #error "Adjust your <asm/byteorder.h> defines"
44 #endif 44 #endif
45 u8 __space2[7]; 45 u8 __space2[7];
46 }; 46 };
47 __u8 v8[8]; 47 __u8 v8[8];
48 __be16 v16[4]; 48 __be16 v16[4];
49 __be32 v32[2]; 49 __be32 v32[2];
50 __be64 v64; 50 __be64 v64;
51 }; 51 };
52 }; 52 };
53 53
54 #define CSUM_NEUTRAL_FLAG htonl(0x100000 54 #define CSUM_NEUTRAL_FLAG htonl(0x10000000)
55 55
56 struct ila_addr { 56 struct ila_addr {
57 union { 57 union {
58 struct in6_addr addr; 58 struct in6_addr addr;
59 struct { 59 struct {
60 struct ila_locator loc 60 struct ila_locator loc;
61 struct ila_identifier 61 struct ila_identifier ident;
62 }; 62 };
63 }; 63 };
64 }; 64 };
65 65
66 static inline struct ila_addr *ila_a2i(struct 66 static inline struct ila_addr *ila_a2i(struct in6_addr *addr)
67 { 67 {
68 return (struct ila_addr *)addr; 68 return (struct ila_addr *)addr;
69 } 69 }
70 70
71 struct ila_params { 71 struct ila_params {
72 struct ila_locator locator; 72 struct ila_locator locator;
73 struct ila_locator locator_match; 73 struct ila_locator locator_match;
74 __wsum csum_diff; 74 __wsum csum_diff;
75 u8 csum_mode; 75 u8 csum_mode;
76 u8 ident_type; 76 u8 ident_type;
77 }; 77 };
78 78
79 static inline __wsum compute_csum_diff8(const 79 static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to)
80 { 80 {
81 __be32 diff[] = { 81 __be32 diff[] = {
82 ~from[0], ~from[1], to[0], to[ 82 ~from[0], ~from[1], to[0], to[1],
83 }; 83 };
84 84
85 return csum_partial(diff, sizeof(diff) 85 return csum_partial(diff, sizeof(diff), 0);
86 } 86 }
87 87
88 static inline bool ila_csum_neutral_set(struct 88 static inline bool ila_csum_neutral_set(struct ila_identifier ident)
89 { 89 {
90 return !!(ident.csum_neutral); 90 return !!(ident.csum_neutral);
91 } 91 }
92 92
93 void ila_update_ipv6_locator(struct sk_buff *s 93 void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p,
94 bool set_csum_neu 94 bool set_csum_neutral);
95 95
96 void ila_init_saved_csum(struct ila_params *p) 96 void ila_init_saved_csum(struct ila_params *p);
97 97
98 struct ila_net { 98 struct ila_net {
99 struct { 99 struct {
100 struct rhashtable rhash_table; 100 struct rhashtable rhash_table;
101 spinlock_t *locks; /* Bucket l 101 spinlock_t *locks; /* Bucket locks for entry manipulation */
102 unsigned int locks_mask; 102 unsigned int locks_mask;
103 bool hooks_registered; 103 bool hooks_registered;
104 } xlat; 104 } xlat;
105 }; 105 };
106 106
107 int ila_lwt_init(void); 107 int ila_lwt_init(void);
108 void ila_lwt_fini(void); 108 void ila_lwt_fini(void);
109 109
110 int ila_xlat_init_net(struct net *net); 110 int ila_xlat_init_net(struct net *net);
111 void ila_xlat_pre_exit_net(struct net *net); <<
112 void ila_xlat_exit_net(struct net *net); 111 void ila_xlat_exit_net(struct net *net);
113 112
114 int ila_xlat_nl_cmd_add_mapping(struct sk_buff 113 int ila_xlat_nl_cmd_add_mapping(struct sk_buff *skb, struct genl_info *info);
115 int ila_xlat_nl_cmd_del_mapping(struct sk_buff 114 int ila_xlat_nl_cmd_del_mapping(struct sk_buff *skb, struct genl_info *info);
116 int ila_xlat_nl_cmd_get_mapping(struct sk_buff 115 int ila_xlat_nl_cmd_get_mapping(struct sk_buff *skb, struct genl_info *info);
117 int ila_xlat_nl_cmd_flush(struct sk_buff *skb, 116 int ila_xlat_nl_cmd_flush(struct sk_buff *skb, struct genl_info *info);
118 int ila_xlat_nl_dump_start(struct netlink_call 117 int ila_xlat_nl_dump_start(struct netlink_callback *cb);
119 int ila_xlat_nl_dump_done(struct netlink_callb 118 int ila_xlat_nl_dump_done(struct netlink_callback *cb);
120 int ila_xlat_nl_dump(struct sk_buff *skb, stru 119 int ila_xlat_nl_dump(struct sk_buff *skb, struct netlink_callback *cb);
121 120
122 extern unsigned int ila_net_id; 121 extern unsigned int ila_net_id;
123 122
124 extern struct genl_family ila_nl_family; 123 extern struct genl_family ila_nl_family;
125 124
126 #endif /* __ILA_H */ 125 #endif /* __ILA_H */
127 126
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