WMI_SKB_HEADROOM
skb = ath10k_htc_alloc_skb(ar, WMI_SKB_HEADROOM + round_len);
skb_reserve(skb, WMI_SKB_HEADROOM);
skb = ath11k_htc_alloc_skb(ab, WMI_SKB_HEADROOM + round_len);
skb_reserve(skb, WMI_SKB_HEADROOM);
skb = ath12k_htc_alloc_skb(ab, WMI_SKB_HEADROOM + round_len);
skb_reserve(skb, WMI_SKB_HEADROOM);