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authorDaniel Borkmann <daniel@iogearbox.net>2015-03-01 12:31:42 +0100
committerDavid S. Miller <davem@davemloft.net>2015-03-01 14:05:18 -0500
commita2c83fff582ae133d9f5bb187404ea9ce4da1f96 (patch)
tree93293fffedc76b48e5ccaefdfd95728719d11753 /include
parentf91fe17e243d1f279d425071a35e3d41290758a0 (diff)
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ebpf: constify various function pointer structs
We can move bpf_map_ops and bpf_verifier_ops and other structs into ro section, bpf_map_type_list and bpf_prog_type_list into read mostly. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/bpf.h14
1 files changed, 7 insertions, 7 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index bbfceb756452..78446860f796 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -32,13 +32,13 @@ struct bpf_map {
u32 key_size;
u32 value_size;
u32 max_entries;
- struct bpf_map_ops *ops;
+ const struct bpf_map_ops *ops;
struct work_struct work;
};
struct bpf_map_type_list {
struct list_head list_node;
- struct bpf_map_ops *ops;
+ const struct bpf_map_ops *ops;
enum bpf_map_type type;
};
@@ -109,7 +109,7 @@ struct bpf_verifier_ops {
struct bpf_prog_type_list {
struct list_head list_node;
- struct bpf_verifier_ops *ops;
+ const struct bpf_verifier_ops *ops;
enum bpf_prog_type type;
};
@@ -121,7 +121,7 @@ struct bpf_prog_aux {
atomic_t refcnt;
bool is_gpl_compatible;
enum bpf_prog_type prog_type;
- struct bpf_verifier_ops *ops;
+ const struct bpf_verifier_ops *ops;
struct bpf_map **used_maps;
u32 used_map_cnt;
struct bpf_prog *prog;
@@ -138,8 +138,8 @@ struct bpf_prog *bpf_prog_get(u32 ufd);
int bpf_check(struct bpf_prog *fp, union bpf_attr *attr);
/* verifier prototypes for helper functions called from eBPF programs */
-extern struct bpf_func_proto bpf_map_lookup_elem_proto;
-extern struct bpf_func_proto bpf_map_update_elem_proto;
-extern struct bpf_func_proto bpf_map_delete_elem_proto;
+extern const struct bpf_func_proto bpf_map_lookup_elem_proto;
+extern const struct bpf_func_proto bpf_map_update_elem_proto;
+extern const struct bpf_func_proto bpf_map_delete_elem_proto;
#endif /* _LINUX_BPF_H */