1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/* Copyright 2015-2016 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. */
#ifndef COMPAT_H
#define COMPAT_H
#include <linux/kconfig.h>
#include <linux/version.h>
#include <linux/types.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)
#error "WireGuard requires Linux >= 4.1"
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0) && !defined(DEBUG) && defined(net_dbg_ratelimited)
#undef net_dbg_ratelimited
#define net_dbg_ratelimited(fmt, ...) do { if (0) no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); } while (0)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
#include <linux/security.h>
#ifdef GRSECURITY_VERSION
#include <linux/random.h>
#endif
#define get_random_long() (((u64)get_random_int() << 32) | get_random_int())
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
#define RCU_LOCKDEP_WARN(cond, message) rcu_lockdep_assert(!(cond), message)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0)
#include <linux/if.h>
#include <net/udp_tunnel.h>
#define udp_tunnel_xmit_skb(a, b, c, d, e, f, g, h, i, j, k, l) do { struct net_device *dev__ = (c)->dev; int ret__ = udp_tunnel_xmit_skb(a, b, c, d, e, f, g, h, i, j, k, l); iptunnel_xmit_stats(ret__, &dev__->stats, dev__->tstats); } while (0)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) && IS_ENABLED(CONFIG_IPV6)
#include <linux/if.h>
#include <net/udp_tunnel.h>
#define udp_tunnel6_xmit_skb(a, b, c, d, e, f, g, h, i, j, k, l) udp_tunnel6_xmit_skb(a, b, c, d, e, f, g, h, j, k, l)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
#include <linux/if.h>
#include <net/udp_tunnel.h>
struct udp_port_cfg_new {
u8 family;
union {
struct in_addr local_ip;
#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr local_ip6;
#endif
};
union {
struct in_addr peer_ip;
#if IS_ENABLED(CONFIG_IPV6)
struct in6_addr peer_ip6;
#endif
};
__be16 local_udp_port;
__be16 peer_udp_port;
unsigned int use_udp_checksums:1, use_udp6_tx_checksums:1, use_udp6_rx_checksums:1, ipv6_v6only:1;
};
__attribute__((unused)) static inline int udp_sock_create_new(struct net *net, struct udp_port_cfg_new *cfg, struct socket **sockp)
{
struct udp_port_cfg old_cfg = {
.family = cfg->family,
.local_ip = cfg->local_ip,
#if IS_ENABLED(CONFIG_IPV6)
.local_ip6 = cfg->local_ip6,
#endif
.peer_ip = cfg->peer_ip,
#if IS_ENABLED(CONFIG_IPV6)
.peer_ip6 = cfg->peer_ip6,
#endif
.local_udp_port = cfg->local_udp_port,
.peer_udp_port = cfg->peer_udp_port,
.use_udp_checksums = cfg->use_udp_checksums,
.use_udp6_tx_checksums = cfg->use_udp6_tx_checksums,
.use_udp6_rx_checksums = cfg->use_udp6_rx_checksums
};
if (cfg->family == AF_INET)
return udp_sock_create4(net, &old_cfg, sockp);
#if IS_ENABLED(CONFIG_IPV6)
if (cfg->family == AF_INET6) {
int ret;
int old_bindv6only;
struct net *nobns;
if (cfg->ipv6_v6only) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0)
nobns = &init_net;
#else
nobns = net;
#endif
/* Since udp_port_cfg only learned of ipv6_v6only in 4.3, we do this horrible
* hack here and set the sysctl variable temporarily to something that will
* set the right option for us in sock_create. It's super racey! */
old_bindv6only = nobns->ipv6.sysctl.bindv6only;
nobns->ipv6.sysctl.bindv6only = 1;
}
ret = udp_sock_create6(net, &old_cfg, sockp);
if (cfg->ipv6_v6only)
nobns->ipv6.sysctl.bindv6only = old_bindv6only;
return ret;
}
#endif
return -EPFNOSUPPORT;
}
#define udp_port_cfg udp_port_cfg_new
#define udp_sock_create(a, b, c) udp_sock_create_new(a, b, c)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
#define ipv6_dst_lookup(a, b, c, d) ipv6_dst_lookup(b, c, d)
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 5) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)) || LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 17)
#define IP6_ECN_set_ce(a, b) IP6_ECN_set_ce(b)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)
#define time_is_before_jiffies64(a) time_after64(get_jiffies_64(), a)
#define time_is_after_jiffies64(a) time_before64(get_jiffies_64(), a)
#define time_is_before_eq_jiffies64(a) time_after_eq64(get_jiffies_64(), a)
#define time_is_after_eq_jiffies64(a) time_before_eq64(get_jiffies_64(), a)
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
struct dst_cache { };
static inline struct dst_entry *dst_cache_get(struct dst_cache *dst_cache) { return NULL; }
static inline struct rtable *dst_cache_get_ip4(struct dst_cache *dst_cache, __be32 *saddr) { return NULL; }
static inline void dst_cache_set_ip4(struct dst_cache *dst_cache, struct dst_entry *dst, __be32 saddr) { }
#if IS_ENABLED(CONFIG_IPV6)
static inline void dst_cache_set_ip6(struct dst_cache *dst_cache, struct dst_entry *dst, const struct in6_addr *addr) { }
static inline struct dst_entry *dst_cache_get_ip6(struct dst_cache *dst_cache, struct in6_addr *saddr) { return NULL; }
#endif
static inline void dst_cache_reset(struct dst_cache *dst_cache) { }
static inline int dst_cache_init(struct dst_cache *dst_cache, gfp_t gfp) { return 0; }
static inline void dst_cache_destroy(struct dst_cache *dst_cache) { }
#endif
/* https://lkml.org/lkml/2015/6/12/415 */
#include <linux/netdevice.h>
static inline struct net_device *netdev_pub(void *dev)
{
return (struct net_device *)((char *)dev - ALIGN(sizeof(struct net_device), NETDEV_ALIGN));
}
/* PaX compatibility */
#ifdef CONSTIFY_PLUGIN
#include <linux/cache.h>
#undef __read_mostly
#define __read_mostly
#endif
#if defined(CONFIG_DYNAMIC_DEBUG) || defined(DEBUG)
#define net_dbg_skb_ratelimited(fmt, skb, ...) do { \
struct endpoint __endpoint; \
socket_endpoint_from_skb(&__endpoint, skb); \
net_dbg_ratelimited(fmt, &__endpoint.addr_storage, ##__VA_ARGS__); \
} while(0)
#else
#define net_dbg_skb_ratelimited(fmt, skb, ...)
#endif
#endif
|
