batadv_skb_set_priority
void batadv_skb_set_priority(struct sk_buff *skb, int offset);
batadv_skb_set_priority(skb, 0);
batadv_skb_set_priority(skb, sizeof(struct batadv_bcast_packet));
batadv_skb_set_priority(skb, hdr_len);