skb_try_coalesce
if (likely(skb_try_coalesce(rxdata->skb, skb, &headstolen,
bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,
EXPORT_SYMBOL(skb_try_coalesce);
if (try_coalesce && skb_try_coalesce(head, fp, &stolen,
if (!skb_try_coalesce(to, from, fragstolen, &delta))
if (skb_try_coalesce(tail, skb, &fragstolen, &delta)) {
!skb_try_coalesce(to, from, fragstolen, delta))
if (skb_try_coalesce(head, frag, &headstolen, &delta)) {