M_PREPEND
M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
M_PREPEND(m, sizeof(*hdr), M_NOWAIT);
M_PREPEND(m0, space, M_NOWAIT);
M_PREPEND(m0, space, M_NOWAIT);
M_PREPEND(m, ETHER_VLAN_ENCAP_LEN, M_NOWAIT);
M_PREPEND(m, ccmp_get_header_len(k), IEEE80211_M_NOWAIT);
M_PREPEND(m, tkip.ic_header, IEEE80211_M_NOWAIT);
M_PREPEND(m, wep.ic_header, IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT);
M_PREPEND(m, hdrlen, IEEE80211_M_NOWAIT);
M_PREPEND(m, hdrspace + meshhdrsize, IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ether_header), IEEE80211_M_NOWAIT);
M_PREPEND(m1, sizeof(uint32_t)+2, IEEE80211_M_NOWAIT);
M_PREPEND(m1, sizeof(struct llc), IEEE80211_M_NOWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT);
M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT);
M_PREPEND(m, hdrlen, M_DONTWAIT);
M_PREPEND(m, sizeof(struct ether_header), M_DONTWAIT);