wlcore_calc_packet_alignment
u32 align_len = wlcore_calc_packet_alignment(wl, len);
u32 aligned_len = wlcore_calc_packet_alignment(wl, skb->len);
EXPORT_SYMBOL(wlcore_calc_packet_alignment);
total_len = wlcore_calc_packet_alignment(wl, skb->len);
unsigned int wlcore_calc_packet_alignment(struct wl1271 *wl,