RTL_RX_DESC_SIZE
WARN_ON(skb_len < (pkt_len + RTL_RX_DESC_SIZE + drvinfo_len));
p_drvinfo = (struct rx_fwinfo_92c *)(rxdesc + RTL_RX_DESC_SIZE);
skb_pull(skb, (drvinfo_len + RTL_RX_DESC_SIZE));
skb_pull(skb, RTL_RX_DESC_SIZE);
skb_pull(skb, RTL_RX_DESC_SIZE);
if (size < RTL_RX_DESC_SIZE + sizeof(struct ieee80211_hdr)) {
hdr = (void *)(_urb->transfer_buffer + RTL_RX_DESC_SIZE);
padding = _rtl_rx_get_padding(hdr, size - RTL_RX_DESC_SIZE);