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fd1740b6 JK |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _BPF_CGROUP_DEFS_H | |
3 | #define _BPF_CGROUP_DEFS_H | |
4 | ||
5 | #ifdef CONFIG_CGROUP_BPF | |
6 | ||
7 | #include <linux/list.h> | |
8 | #include <linux/percpu-refcount.h> | |
9 | #include <linux/workqueue.h> | |
10 | ||
11 | struct bpf_prog_array; | |
12 | ||
69fd337a | 13 | #ifdef CONFIG_BPF_LSM |
c0e19f2c SF |
14 | /* Maximum number of concurrently attachable per-cgroup LSM hooks. */ |
15 | #define CGROUP_LSM_NUM 10 | |
69fd337a SF |
16 | #else |
17 | #define CGROUP_LSM_NUM 0 | |
18 | #endif | |
19 | ||
fd1740b6 JK |
20 | enum cgroup_bpf_attach_type { |
21 | CGROUP_BPF_ATTACH_TYPE_INVALID = -1, | |
22 | CGROUP_INET_INGRESS = 0, | |
23 | CGROUP_INET_EGRESS, | |
24 | CGROUP_INET_SOCK_CREATE, | |
25 | CGROUP_SOCK_OPS, | |
26 | CGROUP_DEVICE, | |
27 | CGROUP_INET4_BIND, | |
28 | CGROUP_INET6_BIND, | |
29 | CGROUP_INET4_CONNECT, | |
30 | CGROUP_INET6_CONNECT, | |
31 | CGROUP_INET4_POST_BIND, | |
32 | CGROUP_INET6_POST_BIND, | |
33 | CGROUP_UDP4_SENDMSG, | |
34 | CGROUP_UDP6_SENDMSG, | |
35 | CGROUP_SYSCTL, | |
36 | CGROUP_UDP4_RECVMSG, | |
37 | CGROUP_UDP6_RECVMSG, | |
38 | CGROUP_GETSOCKOPT, | |
39 | CGROUP_SETSOCKOPT, | |
40 | CGROUP_INET4_GETPEERNAME, | |
41 | CGROUP_INET6_GETPEERNAME, | |
42 | CGROUP_INET4_GETSOCKNAME, | |
43 | CGROUP_INET6_GETSOCKNAME, | |
44 | CGROUP_INET_SOCK_RELEASE, | |
69fd337a SF |
45 | CGROUP_LSM_START, |
46 | CGROUP_LSM_END = CGROUP_LSM_START + CGROUP_LSM_NUM - 1, | |
fd1740b6 JK |
47 | MAX_CGROUP_BPF_ATTACH_TYPE |
48 | }; | |
49 | ||
50 | struct cgroup_bpf { | |
51 | /* array of effective progs in this cgroup */ | |
52 | struct bpf_prog_array __rcu *effective[MAX_CGROUP_BPF_ATTACH_TYPE]; | |
53 | ||
54 | /* attached progs to this cgroup and attach flags | |
55 | * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will | |
56 | * have either zero or one element | |
57 | * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS | |
58 | */ | |
00442143 SF |
59 | struct hlist_head progs[MAX_CGROUP_BPF_ATTACH_TYPE]; |
60 | u8 flags[MAX_CGROUP_BPF_ATTACH_TYPE]; | |
fd1740b6 JK |
61 | |
62 | /* list of cgroup shared storages */ | |
63 | struct list_head storages; | |
64 | ||
65 | /* temp storage for effective prog array used by prog_attach/detach */ | |
66 | struct bpf_prog_array *inactive; | |
67 | ||
68 | /* reference counter used to detach bpf programs after cgroup removal */ | |
69 | struct percpu_ref refcnt; | |
70 | ||
71 | /* cgroup_bpf is released using a work queue */ | |
72 | struct work_struct release_work; | |
73 | }; | |
74 | ||
75 | #else /* CONFIG_CGROUP_BPF */ | |
76 | struct cgroup_bpf {}; | |
77 | #endif /* CONFIG_CGROUP_BPF */ | |
78 | ||
79 | #endif |