From d30d42e08c76cb9323ec6121190eb026b07f773b Mon Sep 17 00:00:00 2001 From: Martin KaFai Lau Date: Wed, 5 Dec 2018 17:35:44 -0800 Subject: [PATCH] bpf: Change insn_offset to insn_off in bpf_func_info The later patch will introduce "struct bpf_line_info" which has member "line_off" and "file_off" referring back to the string section in btf. The line_"off" and file_"off" are more consistent to the naming convention in btf.h that means "offset" (e.g. name_off in "struct btf_type"). The to-be-added "struct bpf_line_info" also has another member, "insn_off" which is the same as the "insn_offset" in "struct bpf_func_info". Hence, this patch renames "insn_offset" to "insn_off" for "struct bpf_func_info". Signed-off-by: Martin KaFai Lau Acked-by: Yonghong Song Signed-off-by: Alexei Starovoitov --- include/uapi/linux/bpf.h | 2 +- kernel/bpf/verifier.c | 18 +++++++++--------- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index c8e1eeee2c5f..a84fd232d934 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -2991,7 +2991,7 @@ struct bpf_flow_keys { }; struct bpf_func_info { - __u32 insn_offset; + __u32 insn_off; __u32 type_id; }; diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 71988337ac14..7658c61c1a88 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -4707,24 +4707,24 @@ static int check_btf_func(struct bpf_prog *prog, struct bpf_verifier_env *env, goto free_btf; } - /* check insn_offset */ + /* check insn_off */ if (i == 0) { - if (krecord[i].insn_offset) { + if (krecord[i].insn_off) { verbose(env, - "nonzero insn_offset %u for the first func info record", - krecord[i].insn_offset); + "nonzero insn_off %u for the first func info record", + krecord[i].insn_off); ret = -EINVAL; goto free_btf; } - } else if (krecord[i].insn_offset <= prev_offset) { + } else if (krecord[i].insn_off <= prev_offset) { verbose(env, "same or smaller insn offset (%u) than previous func info record (%u)", - krecord[i].insn_offset, prev_offset); + krecord[i].insn_off, prev_offset); ret = -EINVAL; goto free_btf; } - if (env->subprog_info[i].start != krecord[i].insn_offset) { + if (env->subprog_info[i].start != krecord[i].insn_off) { verbose(env, "func_info BTF section doesn't match subprog layout in BPF program\n"); ret = -EINVAL; goto free_btf; @@ -4739,7 +4739,7 @@ static int check_btf_func(struct bpf_prog *prog, struct bpf_verifier_env *env, goto free_btf; } - prev_offset = krecord[i].insn_offset; + prev_offset = krecord[i].insn_off; urecord += urec_size; } @@ -4762,7 +4762,7 @@ static void adjust_btf_func(struct bpf_verifier_env *env) return; for (i = 0; i < env->subprog_cnt; i++) - env->prog->aux->func_info[i].insn_offset = env->subprog_info[i].start; + env->prog->aux->func_info[i].insn_off = env->subprog_info[i].start; } /* check %cur's range satisfies %old's */