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bpf: Move __kfunc_param_match_suffix() to btf.c.
Move __kfunc_param_match_suffix() to btf.c and rename it as btf_param_match_suffix(). It can be reused by bpf_struct_ops later. Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com> Link: https://lore.kernel.org/r/20240209023750.1153905-3-thinker.li@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
parent
77c0208e19
commit
6115a0aeef
3 changed files with 32 additions and 28 deletions
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@ -495,6 +495,10 @@ static inline void *btf_id_set8_contains(const struct btf_id_set8 *set, u32 id)
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return bsearch(&id, set->pairs, set->cnt, sizeof(set->pairs[0]), btf_id_cmp_func);
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return bsearch(&id, set->pairs, set->cnt, sizeof(set->pairs[0]), btf_id_cmp_func);
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}
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}
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bool btf_param_match_suffix(const struct btf *btf,
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const struct btf_param *arg,
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const char *suffix);
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struct bpf_verifier_log;
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struct bpf_verifier_log;
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#if defined(CONFIG_BPF_JIT) && defined(CONFIG_BPF_SYSCALL)
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#if defined(CONFIG_BPF_JIT) && defined(CONFIG_BPF_SYSCALL)
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@ -8904,3 +8904,21 @@ int __register_bpf_struct_ops(struct bpf_struct_ops *st_ops)
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}
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}
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EXPORT_SYMBOL_GPL(__register_bpf_struct_ops);
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EXPORT_SYMBOL_GPL(__register_bpf_struct_ops);
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#endif
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#endif
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bool btf_param_match_suffix(const struct btf *btf,
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const struct btf_param *arg,
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const char *suffix)
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{
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int suffix_len = strlen(suffix), len;
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const char *param_name;
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/* In the future, this can be ported to use BTF tagging */
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param_name = btf_name_by_offset(btf, arg->name_off);
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if (str_is_empty(param_name))
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return false;
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len = strlen(param_name);
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if (len <= suffix_len)
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return false;
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param_name += len - suffix_len;
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return !strncmp(param_name, suffix, suffix_len);
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}
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@ -10682,24 +10682,6 @@ static bool is_kfunc_rcu_protected(struct bpf_kfunc_call_arg_meta *meta)
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return meta->kfunc_flags & KF_RCU_PROTECTED;
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return meta->kfunc_flags & KF_RCU_PROTECTED;
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}
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}
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static bool __kfunc_param_match_suffix(const struct btf *btf,
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const struct btf_param *arg,
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const char *suffix)
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{
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int suffix_len = strlen(suffix), len;
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const char *param_name;
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/* In the future, this can be ported to use BTF tagging */
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param_name = btf_name_by_offset(btf, arg->name_off);
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if (str_is_empty(param_name))
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return false;
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len = strlen(param_name);
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if (len < suffix_len)
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return false;
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param_name += len - suffix_len;
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return !strncmp(param_name, suffix, suffix_len);
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}
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static bool is_kfunc_arg_mem_size(const struct btf *btf,
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static bool is_kfunc_arg_mem_size(const struct btf *btf,
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const struct btf_param *arg,
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const struct btf_param *arg,
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const struct bpf_reg_state *reg)
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const struct bpf_reg_state *reg)
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@ -10710,7 +10692,7 @@ static bool is_kfunc_arg_mem_size(const struct btf *btf,
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if (!btf_type_is_scalar(t) || reg->type != SCALAR_VALUE)
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if (!btf_type_is_scalar(t) || reg->type != SCALAR_VALUE)
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return false;
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return false;
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return __kfunc_param_match_suffix(btf, arg, "__sz");
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return btf_param_match_suffix(btf, arg, "__sz");
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}
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}
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static bool is_kfunc_arg_const_mem_size(const struct btf *btf,
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static bool is_kfunc_arg_const_mem_size(const struct btf *btf,
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@ -10723,47 +10705,47 @@ static bool is_kfunc_arg_const_mem_size(const struct btf *btf,
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if (!btf_type_is_scalar(t) || reg->type != SCALAR_VALUE)
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if (!btf_type_is_scalar(t) || reg->type != SCALAR_VALUE)
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return false;
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return false;
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return __kfunc_param_match_suffix(btf, arg, "__szk");
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return btf_param_match_suffix(btf, arg, "__szk");
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}
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}
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static bool is_kfunc_arg_optional(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_optional(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__opt");
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return btf_param_match_suffix(btf, arg, "__opt");
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}
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}
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static bool is_kfunc_arg_constant(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_constant(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__k");
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return btf_param_match_suffix(btf, arg, "__k");
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}
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}
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static bool is_kfunc_arg_ignore(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_ignore(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__ign");
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return btf_param_match_suffix(btf, arg, "__ign");
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}
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}
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static bool is_kfunc_arg_alloc_obj(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_alloc_obj(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__alloc");
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return btf_param_match_suffix(btf, arg, "__alloc");
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}
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}
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static bool is_kfunc_arg_uninit(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_uninit(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__uninit");
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return btf_param_match_suffix(btf, arg, "__uninit");
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}
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}
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static bool is_kfunc_arg_refcounted_kptr(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_refcounted_kptr(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__refcounted_kptr");
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return btf_param_match_suffix(btf, arg, "__refcounted_kptr");
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}
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}
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static bool is_kfunc_arg_nullable(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_nullable(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__nullable");
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return btf_param_match_suffix(btf, arg, "__nullable");
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}
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}
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static bool is_kfunc_arg_const_str(const struct btf *btf, const struct btf_param *arg)
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static bool is_kfunc_arg_const_str(const struct btf *btf, const struct btf_param *arg)
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{
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{
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return __kfunc_param_match_suffix(btf, arg, "__str");
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return btf_param_match_suffix(btf, arg, "__str");
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}
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}
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static bool is_kfunc_arg_scalar_with_name(const struct btf *btf,
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static bool is_kfunc_arg_scalar_with_name(const struct btf *btf,
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