4 #include <linux/jump_label.h>
5 #include <uapi/linux/bpf.h>
11 #ifdef CONFIG_CGROUP_BPF
13 extern struct static_key_false cgroup_bpf_enabled_key;
14 #define cgroup_bpf_enabled static_branch_unlikely(&cgroup_bpf_enabled_key)
18 * Store two sets of bpf_prog pointers, one for programs that are
19 * pinned directly to this cgroup, and one for those that are effective
20 * when this cgroup is accessed.
22 struct bpf_prog *prog[MAX_BPF_ATTACH_TYPE];
23 struct bpf_prog __rcu *effective[MAX_BPF_ATTACH_TYPE];
24 bool disallow_override[MAX_BPF_ATTACH_TYPE];
27 void cgroup_bpf_put(struct cgroup *cgrp);
28 void cgroup_bpf_inherit(struct cgroup *cgrp, struct cgroup *parent);
30 int __cgroup_bpf_update(struct cgroup *cgrp, struct cgroup *parent,
31 struct bpf_prog *prog, enum bpf_attach_type type,
34 /* Wrapper for __cgroup_bpf_update() protected by cgroup_mutex */
35 int cgroup_bpf_update(struct cgroup *cgrp, struct bpf_prog *prog,
36 enum bpf_attach_type type, bool overridable);
38 int __cgroup_bpf_run_filter_skb(struct sock *sk,
40 enum bpf_attach_type type);
42 int __cgroup_bpf_run_filter_sk(struct sock *sk,
43 enum bpf_attach_type type);
45 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
46 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb) \
49 if (cgroup_bpf_enabled) \
50 __ret = __cgroup_bpf_run_filter_skb(sk, skb, \
51 BPF_CGROUP_INET_INGRESS); \
56 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb) \
59 if (cgroup_bpf_enabled && sk && sk == skb->sk) { \
60 typeof(sk) __sk = sk_to_full_sk(sk); \
61 if (sk_fullsock(__sk)) \
62 __ret = __cgroup_bpf_run_filter_skb(__sk, skb, \
63 BPF_CGROUP_INET_EGRESS); \
68 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) \
71 if (cgroup_bpf_enabled && sk) { \
72 __ret = __cgroup_bpf_run_filter_sk(sk, \
73 BPF_CGROUP_INET_SOCK_CREATE); \
81 static inline void cgroup_bpf_put(struct cgroup *cgrp) {}
82 static inline void cgroup_bpf_inherit(struct cgroup *cgrp,
83 struct cgroup *parent) {}
85 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
86 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
87 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
89 #endif /* CONFIG_CGROUP_BPF */
91 #endif /* _BPF_CGROUP_H */