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