MAX_BGSCAN_PROBE_REQ_LEN
skb = dev_alloc_skb(frame_len + MAX_BGSCAN_PROBE_REQ_LEN);
memset(skb->data, 0, frame_len + MAX_BGSCAN_PROBE_REQ_LEN);
if (probereq_skb->len > MAX_BGSCAN_PROBE_REQ_LEN) {