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bpf: expose bpf_strtol and bpf_strtoul to all program types

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bpf_strncmp is already exposed everywhere. The motivation is to keep
those helpers in kernel/bpf/helpers.c. Otherwise it's tempting to move
them under kernel/bpf/cgroup.c because they are currently only used
by sysctl prog types.

Suggested-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20220823222555.523590-4-sdf@google.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Stanislav Fomichev 2022-08-23 15:25:53 -07:00 committed by Alexei Starovoitov
parent bed89185af
commit 8a67f2de9b
2 changed files with 5 additions and 5 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
kernel/bpf/cgroup.c
View file

@ -2132,10 +2132,6 @@ sysctl_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
return func_proto;
switch (func_id) {
case BPF_FUNC_strtol:
return &bpf_strtol_proto;
case BPF_FUNC_strtoul:
return &bpf_strtoul_proto;
case BPF_FUNC_sysctl_get_name:
return &bpf_sysctl_get_name_proto;
case BPF_FUNC_sysctl_get_current_value:

6
kernel/bpf/helpers.c
View file

@ -427,6 +427,7 @@ const struct bpf_func_proto bpf_get_current_ancestor_cgroup_id_proto = {
.ret_type = RET_INTEGER,
.arg1_type = ARG_ANYTHING,
};
#endif /* CONFIG_CGROUPS */
#define BPF_STRTOX_BASE_MASK 0x1F
@ -555,7 +556,6 @@ const struct bpf_func_proto bpf_strtoul_proto = {
.arg3_type = ARG_ANYTHING,
.arg4_type = ARG_PTR_TO_LONG,
};
#endif
BPF_CALL_3(bpf_strncmp, const char *, s1, u32, s1_sz, const char *, s2)
{
@ -1619,6 +1619,10 @@ bpf_base_func_proto(enum bpf_func_id func_id)
return &bpf_loop_proto;
case BPF_FUNC_strncmp:
return &bpf_strncmp_proto;
case BPF_FUNC_strtol:
return &bpf_strtol_proto;
case BPF_FUNC_strtoul:
return &bpf_strtoul_proto;
case BPF_FUNC_dynptr_from_mem:
return &bpf_dynptr_from_mem_proto;
case BPF_FUNC_dynptr_read: