SIZE_MASK
td->scs = cpu_to_le32(skb->len) & cpu_to_le32(SIZE_MASK);
td->scs = cpu_to_le32(pipe->buf_size) & cpu_to_le32(SIZE_MASK);
} else if ((le32_to_cpu(p_td->scs) & SIZE_MASK) > pipe->buf_size) {
le32_to_cpu(p_td->scs) & SIZE_MASK,
skb_put(skb, le32_to_cpu(p_td->scs) & SIZE_MASK);