1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BPF_NETNS_H
3 #define _BPF_NETNS_H
4
5 #include <linux/mutex.h>
6 #include <net/netns/bpf.h>
7 #include <uapi/linux/bpf.h>
8
9 static inline enum netns_bpf_attach_type
10 to_netns_bpf_attach_type(enum bpf_attach_type attach_type)
11 {
12 switch (attach_type) {
13 case BPF_FLOW_DISSECTOR:
14 return NETNS_BPF_FLOW_DISSECTOR;
15 case BPF_SK_LOOKUP:
16 return NETNS_BPF_SK_LOOKUP;
17 default:
18 return NETNS_BPF_INVALID;
19 }
20 }
21
22 /* Protects updates to netns_bpf */
23 extern struct mutex netns_bpf_mutex;
24
25 union bpf_attr;
26 struct bpf_prog;
27
28 #ifdef CONFIG_NET
29 int netns_bpf_prog_query(const union bpf_attr *attr,
30 union bpf_attr __user *uattr);
31 int netns_bpf_prog_attach(const union bpf_attr *attr,
32 struct bpf_prog *prog);
33 int netns_bpf_prog_detach(const union bpf_attr *attr, enum bpf_prog_type ptype);
34 int netns_bpf_link_create(const union bpf_attr *attr,
35 struct bpf_prog *prog);
36 #else
37 static inline int netns_bpf_prog_query(const union bpf_attr *attr,
38 union bpf_attr __user *uattr)
39 {
40 return -EOPNOTSUPP;
41 }
42
43 static inline int netns_bpf_prog_attach(const union bpf_attr *attr,
44 struct bpf_prog *prog)
45 {
46 return -EOPNOTSUPP;
47 }
48
49 static inline int netns_bpf_prog_detach(const union bpf_attr *attr,
50 enum bpf_prog_type ptype)
51 {
52 return -EOPNOTSUPP;
53 }
54
55 static inline int netns_bpf_link_create(const union bpf_attr *attr,
56 struct bpf_prog *prog)
57 {
58 return -EOPNOTSUPP;
59 }
60 #endif
61
62 #endif /* _BPF_NETNS_H */
63
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