1 /* $NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $ */ 2 3 /* 4 * Copyright (c) 2016 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Roy Marples. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: rtsock_70.c,v 1.8 2019/12/12 02:15:42 pgoyette Exp $"); 34 35 #ifdef _KERNEL_OPT 36 #include "opt_compat_netbsd.h" 37 #endif 38 39 #include <sys/mbuf.h> 40 #include <sys/compat_stub.h> 41 42 #include <net/if.h> 43 #include <net/route.h> 44 45 #include <compat/net/if.h> 46 #include <compat/net/route.h> 47 #include <compat/net/route_70.h> 48 49 void 50 compat_70_rt_newaddrmsg1(int cmd, struct ifaddr *ifa) 51 { 52 struct rt_addrinfo info; 53 const struct sockaddr *sa; 54 struct mbuf *m; 55 struct ifnet *ifp; 56 struct ifa_msghdr70 ifam; 57 int ncmd; 58 59 KASSERT(ifa != NULL); 60 ifp = ifa->ifa_ifp; 61 62 switch (cmd) { 63 case RTM_NEWADDR: 64 ncmd = RTM_ONEWADDR; 65 break; 66 case RTM_DELADDR: 67 ncmd = RTM_ODELADDR; 68 break; 69 case RTM_CHGADDR: 70 ncmd = RTM_OCHGADDR; 71 break; 72 default: 73 panic("%s: called with wrong command", __func__); 74 } 75 76 memset(&info, 0, sizeof(info)); 77 info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr; 78 KASSERT(ifp->if_dl != NULL); 79 info.rti_info[RTAX_IFP] = ifp->if_dl->ifa_addr; 80 info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask; 81 info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr; 82 83 memset(&ifam, 0, sizeof(ifam)); 84 ifam.ifam_index = ifp->if_index; 85 ifam.ifam_metric = ifa->ifa_metric; 86 ifam.ifam_flags = ifa->ifa_flags; 87 88 m = rt_msg1(ncmd, &info, &ifam, sizeof(ifam)); 89 if (m == NULL) 90 return; 91 92 mtod(m, struct ifa_msghdr70 *)->ifam_addrs = info.rti_addrs; 93 route_enqueue(m, sa ? sa->sa_family : 0); 94 } 95 96 int 97 compat_70_iflist_addr(struct rt_walkarg *w, struct ifaddr *ifa, 98 struct rt_addrinfo *info) 99 { 100 int len, error; 101 102 if ((error = rt_msg3(RTM_ONEWADDR, info, 0, w, &len))) 103 return error; 104 if (w->w_where && w->w_tmem && w->w_needed <= 0) { 105 struct ifa_msghdr70 *ifam; 106 107 ifam = (struct ifa_msghdr70 *)w->w_tmem; 108 ifam->ifam_index = ifa->ifa_ifp->if_index; 109 ifam->ifam_flags = ifa->ifa_flags; 110 ifam->ifam_metric = ifa->ifa_metric; 111 ifam->ifam_addrs = info->rti_addrs; 112 if ((error = copyout(w->w_tmem, w->w_where, len)) == 0) 113 w->w_where = (char *)w->w_where + len; 114 } 115 return error; 116 } 117 118 void 119 rtsock_70_init(void) 120 { 121 122 MODULE_HOOK_SET(rtsock_newaddr_70_hook, compat_70_rt_newaddrmsg1); 123 MODULE_HOOK_SET(rtsock_iflist_70_hook, compat_70_iflist_addr); 124 } 125 126 void 127 rtsock_70_fini(void) 128 { 129 130 MODULE_HOOK_UNSET(rtsock_newaddr_70_hook); 131 MODULE_HOOK_UNSET(rtsock_iflist_70_hook); 132 } 133