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 <uapi/linux/bpf.h> 7 8 enum netns_bpf_attach_type { 9 NETNS_BPF_INVALID = -1, 10 NETNS_BPF_FLOW_DISSECTOR = 0, 11 MAX_NETNS_BPF_ATTACH_TYPE 12 }; 13 14 static inline enum netns_bpf_attach_type 15 to_netns_bpf_attach_type(enum bpf_attach_type attach_type) 16 { 17 switch (attach_type) { 18 case BPF_FLOW_DISSECTOR: 19 return NETNS_BPF_FLOW_DISSECTOR; 20 default: 21 return NETNS_BPF_INVALID; 22 } 23 } 24 25 /* Protects updates to netns_bpf */ 26 extern struct mutex netns_bpf_mutex; 27 28 union bpf_attr; 29 struct bpf_prog; 30 31 #ifdef CONFIG_NET 32 int netns_bpf_prog_query(const union bpf_attr *attr, 33 union bpf_attr __user *uattr); 34 int netns_bpf_prog_attach(const union bpf_attr *attr, 35 struct bpf_prog *prog); 36 int netns_bpf_prog_detach(const union bpf_attr *attr); 37 int netns_bpf_link_create(const union bpf_attr *attr, 38 struct bpf_prog *prog); 39 #else 40 static inline int netns_bpf_prog_query(const union bpf_attr *attr, 41 union bpf_attr __user *uattr) 42 { 43 return -EOPNOTSUPP; 44 } 45 46 static inline int netns_bpf_prog_attach(const union bpf_attr *attr, 47 struct bpf_prog *prog) 48 { 49 return -EOPNOTSUPP; 50 } 51 52 static inline int netns_bpf_prog_detach(const union bpf_attr *attr) 53 { 54 return -EOPNOTSUPP; 55 } 56 57 static inline int netns_bpf_link_create(const union bpf_attr *attr, 58 struct bpf_prog *prog) 59 { 60 return -EOPNOTSUPP; 61 } 62 #endif 63 64 #endif /* _BPF_NETNS_H */ 65