diff --git a/sys/net/route/route_ifaddrs.c b/sys/net/route/route_ifaddrs.c index 6e264327d66d..853f7f8fbe15 100644 --- a/sys/net/route/route_ifaddrs.c +++ b/sys/net/route/route_ifaddrs.c @@ -1,206 +1,206 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1980, 1986, 1991, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)route.c 8.3.1.1 (Berkeley) 2/23/95 * $FreeBSD$ */ #include "opt_route.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Control interface address fib propagation. * By default, interface address routes are added to the fib of the interface. * Once set to non-zero, adds interface address route to all fibs. */ VNET_DEFINE(u_int, rt_add_addr_allfibs) = 0; SYSCTL_UINT(_net, OID_AUTO, add_addr_allfibs, CTLFLAG_RWTUN | CTLFLAG_VNET, &VNET_NAME(rt_add_addr_allfibs), 0, ""); /* * Executes routing tables change specified by @cmd and @info for the fib * @fibnum. Generates routing message on success. * Note: it assumes there is only single route (interface route) for the * provided prefix. * Returns 0 on success or errno. */ static int rib_handle_ifaddr_one(uint32_t fibnum, int cmd, struct rt_addrinfo *info) { struct rib_cmd_info rc; struct nhop_object *nh; int error; error = rib_action(fibnum, cmd, info, &rc); if (error == 0) { if (cmd == RTM_ADD) nh = nhop_select(rc.rc_nh_new, 0); else nh = nhop_select(rc.rc_nh_old, 0); rt_routemsg(cmd, rc.rc_rt, nh, fibnum); } return (error); } /* * Adds/deletes interface prefix specified by @info to the routing table. * If V_rt_add_addr_allfibs is set, iterates over all existing routing * tables, otherwise uses fib in @fibnum. Generates routing message for * each table. * Returns 0 on success or errno. */ int rib_handle_ifaddr_info(uint32_t fibnum, int cmd, struct rt_addrinfo *info) { - int error, last_error = 0; + int error = 0, last_error = 0; bool didwork = false; if (V_rt_add_addr_allfibs == 0) { error = rib_handle_ifaddr_one(fibnum, cmd, info); didwork = (error == 0); } else { for (fibnum = 0; fibnum < V_rt_numfibs; fibnum++) { error = rib_handle_ifaddr_one(fibnum, cmd, info); if (error == 0) didwork = true; else last_error = error; } } if (cmd == RTM_DELETE) { if (didwork) { error = 0; } else { /* we only give an error if it wasn't in any table */ error = ((info->rti_flags & RTF_HOST) ? EHOSTUNREACH : ENETUNREACH); } } else { if (last_error != 0) { /* return an error if any of them failed */ error = last_error; } } return (error); } static int ifa_maintain_loopback_route(int cmd, const char *otype, struct ifaddr *ifa, struct sockaddr *ia) { struct rib_cmd_info rc; struct epoch_tracker et; int error; struct rt_addrinfo info; struct sockaddr_dl null_sdl; struct ifnet *ifp; struct ifaddr *rti_ifa = NULL; ifp = ifa->ifa_ifp; NET_EPOCH_ENTER(et); bzero(&info, sizeof(info)); if (cmd != RTM_DELETE) info.rti_ifp = V_loif; if (cmd == RTM_ADD) { /* explicitly specify (loopback) ifa */ if (info.rti_ifp != NULL) { rti_ifa = ifaof_ifpforaddr(ifa->ifa_addr, info.rti_ifp); if (rti_ifa != NULL) ifa_ref(rti_ifa); info.rti_ifa = rti_ifa; } } info.rti_flags = ifa->ifa_flags | RTF_HOST | RTF_STATIC | RTF_PINNED; info.rti_info[RTAX_DST] = ia; info.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&null_sdl; link_init_sdl(ifp, (struct sockaddr *)&null_sdl, ifp->if_type); error = rib_action(ifp->if_fib, cmd, &info, &rc); NET_EPOCH_EXIT(et); if (rti_ifa != NULL) ifa_free(rti_ifa); if (error == 0 || (cmd == RTM_ADD && error == EEXIST) || (cmd == RTM_DELETE && (error == ENOENT || error == ESRCH))) return (error); log(LOG_DEBUG, "%s: %s failed for interface %s: %u\n", __func__, otype, if_name(ifp), error); return (error); } int ifa_add_loopback_route(struct ifaddr *ifa, struct sockaddr *ia) { return (ifa_maintain_loopback_route(RTM_ADD, "insertion", ifa, ia)); } int ifa_del_loopback_route(struct ifaddr *ifa, struct sockaddr *ia) { return (ifa_maintain_loopback_route(RTM_DELETE, "deletion", ifa, ia)); } int ifa_switch_loopback_route(struct ifaddr *ifa, struct sockaddr *ia) { return (ifa_maintain_loopback_route(RTM_CHANGE, "switch", ifa, ia)); }