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ebpf: constify various function pointer structs

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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>
This commit is contained in:
Daniel Borkmann
2015-03-01 12:31:42 +01:00
committed by David S. Miller
parent f91fe17e24
commit a2c83fff58
5 changed files with 19 additions and 19 deletions
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14
include/linux/bpf.h
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@@ -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 */