2419     struct mbuf *mb_first;  in pim_register_send_upcall()  local
2429     mb_first = m_gethdr(M_NOWAIT, MT_DATA);  in pim_register_send_upcall()
2430     if (mb_first == NULL) {  in pim_register_send_upcall()
2434     mb_first->m_data += max_linkhdr;  in pim_register_send_upcall()
2435     mb_first->m_pkthdr.len = len + sizeof(struct igmpmsg);  in pim_register_send_upcall()
2436     mb_first->m_len = sizeof(struct igmpmsg);  in pim_register_send_upcall()
2437     mb_first->m_next = mb_copy;  in pim_register_send_upcall()
2440     im = mtod(mb_first, struct igmpmsg *);  in pim_register_send_upcall()
2451     if (socket_send(V_ip_mrouter, mb_first, &k_igmpsrc) < 0) {  in pim_register_send_upcall()
2471     struct mbuf *mb_first;  in pim_register_send_rp()  local
2487     mb_first = m_gethdr(M_NOWAIT, MT_DATA);  in pim_register_send_rp()
2488     if (mb_first == NULL) {  in pim_register_send_rp()
2492     mb_first->m_data += max_linkhdr;  in pim_register_send_rp()
2493     mb_first->m_len = sizeof(pim_encap_iphdr) + sizeof(pim_encap_pimhdr);  in pim_register_send_rp()
2494     mb_first->m_next = mb_copy;  in pim_register_send_rp()
2496     mb_first->m_pkthdr.len = len + mb_first->m_len;  in pim_register_send_rp()
2501     ip_outer = mtod(mb_first, struct ip *);  in pim_register_send_rp()
2522     mb_first->m_data += sizeof(pim_encap_iphdr);  in pim_register_send_rp()
2523     pimhdr->pim.pim_cksum = in_cksum(mb_first, sizeof(pim_encap_pimhdr));  in pim_register_send_rp()
2524     mb_first->m_data -= sizeof(pim_encap_iphdr);  in pim_register_send_rp()
2526     send_packet(vifp, mb_first);  in pim_register_send_rp()