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1 | /* | |
2 | * Copyright (c) 2007-2012 Nicira, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of version 2 of the GNU General Public | |
6 | * License as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
16 | * 02110-1301, USA | |
17 | */ | |
18 | ||
19 | #ifndef COMPAT_H | |
20 | #define COMPAT_H 1 | |
21 | ||
22 | #include <linux/netlink.h> | |
23 | ||
24 | #ifndef HAVE_NLA_NUL_STRING | |
25 | static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen) | |
26 | { | |
27 | char *s; | |
28 | int len; | |
29 | if (!attr) | |
30 | return 0; | |
31 | ||
32 | len = nla_len(attr); | |
33 | if (len >= maxlen) | |
34 | return -EINVAL; | |
35 | ||
36 | s = nla_data(attr); | |
37 | if (s[len - 1] != '\0') | |
38 | return -EINVAL; | |
39 | ||
40 | return 0; | |
41 | } | |
42 | #else | |
43 | static inline int CHECK_NUL_STRING(struct nlattr *attr, int maxlen) | |
44 | { | |
45 | return 0; | |
46 | } | |
47 | #endif /* !HAVE_NLA_NUL_STRING */ | |
48 | ||
49 | static inline void skb_clear_rxhash(struct sk_buff *skb) | |
50 | { | |
51 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35) | |
52 | skb->rxhash = 0; | |
53 | #endif | |
54 | } | |
55 | ||
56 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,32) | |
57 | #define GENL_SOCK(net) (genl_sock) | |
58 | #define SET_NETNSOK | |
59 | #else | |
60 | #define GENL_SOCK(net) ((net)->genl_sock) | |
61 | #define SET_NETNSOK .netnsok = true, | |
62 | #endif | |
63 | ||
64 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) | |
65 | #ifdef CONFIG_NETFILTER | |
66 | static inline u32 skb_get_mark(struct sk_buff *skb) | |
67 | { | |
68 | return skb->nfmark; | |
69 | } | |
70 | ||
71 | static inline void skb_set_mark(struct sk_buff *skb, u32 mark) | |
72 | { | |
73 | skb->nfmark = mark; | |
74 | } | |
75 | #else /* CONFIG_NETFILTER */ | |
76 | static inline u32 skb_get_mark(struct sk_buff *skb) | |
77 | { | |
78 | return 0; | |
79 | } | |
80 | ||
81 | static inline void skb_set_mark(struct sk_buff *skb, u32 mark) | |
82 | { | |
83 | } | |
84 | #endif | |
85 | #else /* before 2.6.20 */ | |
86 | static inline u32 skb_get_mark(struct sk_buff *skb) | |
87 | { | |
88 | return skb->mark; | |
89 | } | |
90 | ||
91 | static inline void skb_set_mark(struct sk_buff *skb, u32 mark) | |
92 | { | |
93 | skb->mark = mark; | |
94 | } | |
95 | #endif /* after 2.6.20 */ | |
96 | ||
97 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36) | |
98 | #define rt_dst(rt) (rt->dst) | |
99 | #else | |
100 | #define rt_dst(rt) (rt->u.dst) | |
101 | #endif | |
102 | ||
103 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33) | |
104 | #define inet_sport(sk) (inet_sk(sk)->sport) | |
105 | #else | |
106 | #define inet_sport(sk) (inet_sk(sk)->inet_sport) | |
107 | #endif | |
108 | ||
109 | #endif /* compat.h */ |