1 /* 2 * Copyright (c) 2003, 2004 Jeffrey M. Hsu. All rights reserved. 3 * Copyright (c) 2003, 2004 The DragonFly Project. All rights reserved. 4 * 5 * This code is derived from software contributed to The DragonFly Project 6 * by Jeffrey M. Hsu. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of The DragonFly Project nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific, prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "opt_inet6.h" 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/socket.h> 40 #include <sys/socketvar.h> 41 42 #include <netinet/tcp_var.h> 43 #include <netinet6/tcp6_var.h> 44 45 lwkt_port_t 46 tcp6_soport(struct socket *so, struct sockaddr *nam, struct mbuf **m0, int req) 47 { 48 struct inpcb *inp; 49 50 /* 51 * Use IPv6 default tcp soport (cpu0_soport) if: 52 * - No socket yet 53 * - No inp, connection reset by peer 54 * - IPv6 only 55 * - Not IPv4 mapped 56 */ 57 if (so == NULL || (inp = so->so_pcb) == NULL || 58 (inp->inp_flags & IN6P_IPV6_V6ONLY) || 59 (inp->inp_vflag & INP_IPV4) == 0) 60 return cpu0_soport(so, nam, m0, req); 61 62 /* IPv4 mapped, fall back to IPv4 tcp_soport */ 63 return tcp_soport(so, nam, m0, req); 64 } 65 66 /* 67 * XXX hack 68 */ 69 lwkt_port_t 70 tcp6_addrport(void) 71 { 72 return(tcp_addrport0()); 73 } 74