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bpf: allow eBPF programs to use maps

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expose bpf_map_lookup_elem(), bpf_map_update_elem(), bpf_map_delete_elem()
map accessors to eBPF programs

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexei Starovoitov
2014-11-13 17:36:49 -08:00
committed by David S. Miller
parent ffb65f27a1
commit d0003ec01c
4 changed files with 98 additions and 1 deletions
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5
include/linux/bpf.h
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@@ -133,4 +133,9 @@ struct bpf_prog *bpf_prog_get(u32 ufd);
/* verify correctness of eBPF program */
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;
#endif /* _LINUX_BPF_H */