m_leadingspace
if (m_leadingspace(m0) < 8) {
KASSERT(m_leadingspace(m) >= txd_len);
KASSERT(m_leadingspace(m) >= sizeof(uint32_t));
KASSERT(m_leadingspace(m) >= sizeof(*hdr));
if (m_leadingspace(m) < 16)
if (skip < remain && hlen <= m_leadingspace(m)) {
if (m_leadingspace(m) >= len) {
if ((off == 0 || offp) && m_leadingspace(n->m_next) >= hlen &&
int m_leadingspace(struct mbuf *);