From a2c83fff582ae133d9f5bb187404ea9ce4da1f96 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Sun, 1 Mar 2015 12:31:42 +0100 Subject: 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 Acked-by: Alexei Starovoitov Signed-off-by: David S. Miller --- include/linux/bpf.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include') 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 */ -- cgit v1.2.1