summaryrefslogtreecommitdiff
path: root/include/linux
diff options
context:
space:
mode:
authorDaniel Borkmann <daniel@iogearbox.net>2015-03-01 12:31:44 +0100
committerDavid S. Miller <davem@davemloft.net>2015-03-01 14:05:19 -0500
commit0fc174dea54546e2b1146e1197da1b6d4bc48107 (patch)
tree8f2245ad49d33a2a474083b9cd54165afd8c1710 /include/linux
parentf1a66f85b74c5ef7b503f746ea97742dacd56419 (diff)
ebpf: make internal bpf API independent of CONFIG_BPF_SYSCALL ifdefs
Socket filter code and other subsystems with upcoming eBPF support should not need to deal with the fact that we have CONFIG_BPF_SYSCALL defined or not. Having the bpf syscall as a config option is a nice thing and I'd expect it to stay that way for expert users (I presume one day the default setting of it might change, though), but code making use of it should not care if it's actually enabled or not. Instead, hide this via header files and let the rest deal with it. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/bpf.h20
1 files changed, 16 insertions, 4 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 78446860f796..9c458144cdb4 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -113,8 +113,6 @@ struct bpf_prog_type_list {
enum bpf_prog_type type;
};
-void bpf_register_prog_type(struct bpf_prog_type_list *tl);
-
struct bpf_prog;
struct bpf_prog_aux {
@@ -129,11 +127,25 @@ struct bpf_prog_aux {
};
#ifdef CONFIG_BPF_SYSCALL
+void bpf_register_prog_type(struct bpf_prog_type_list *tl);
+
void bpf_prog_put(struct bpf_prog *prog);
+struct bpf_prog *bpf_prog_get(u32 ufd);
#else
-static inline void bpf_prog_put(struct bpf_prog *prog) {}
+static inline void bpf_register_prog_type(struct bpf_prog_type_list *tl)
+{
+}
+
+static inline struct bpf_prog *bpf_prog_get(u32 ufd)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+
+static inline void bpf_prog_put(struct bpf_prog *prog)
+{
+}
#endif
-struct bpf_prog *bpf_prog_get(u32 ufd);
+
/* verify correctness of eBPF program */
int bpf_check(struct bpf_prog *fp, union bpf_attr *attr);