BRCM_TAG_LEN
if (__skb_put_padto(skb, ETH_ZLEN + BRCM_TAG_LEN, false))
skb_push(skb, BRCM_TAG_LEN);
dsa_alloc_etype_header(skb, BRCM_TAG_LEN);
if (unlikely(!pskb_may_pull(skb, BRCM_TAG_LEN)))
skb_pull_rcsum(skb, BRCM_TAG_LEN);
dsa_strip_etype_header(skb, BRCM_TAG_LEN);
.needed_headroom = BRCM_TAG_LEN,
.needed_headroom = BRCM_TAG_LEN,