QCAFRM_MIN_LEN
if (len > buf_len || len < QCAFRM_MIN_LEN) {
if (skb->len < QCAFRM_MIN_LEN)
pad_len = QCAFRM_MIN_LEN - skb->len;
dev->needed_tailroom = ALIGN(QCAFRM_FOOTER_LEN + QCAFRM_MIN_LEN, 4);
if (skb->len < QCAFRM_MIN_LEN)
pad_len = QCAFRM_MIN_LEN - skb->len;