static int
nfp_bpf_check_ptr(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta,
- const struct bpf_verifier_env *env, u8 reg)
+ const struct bpf_verifier_env *env, u8 reg_no)
{
- if (env->cur_state.regs[reg].type != PTR_TO_CTX &&
- env->cur_state.regs[reg].type != PTR_TO_PACKET)
+ const struct bpf_reg_state *reg = &env->cur_state.regs[reg_no];
+
+ if (reg->type != PTR_TO_CTX &&
+ reg->type != PTR_TO_PACKET) {
+ pr_info("unsupported ptr type: %d\n", reg->type);
return -EINVAL;
+ }
- if (meta->ptr.type != NOT_INIT &&
- meta->ptr.type != env->cur_state.regs[reg].type)
+ if (meta->ptr.type != NOT_INIT && meta->ptr.type != reg->type) {
+ pr_info("ptr type changed for instruction %d -> %d\n",
+ meta->ptr.type, reg->type);
return -EINVAL;
+ }
- meta->ptr = env->cur_state.regs[reg];
+ meta->ptr = *reg;
return 0;
}