1 /* $OpenBSD: mpls_raw.c,v 1.18 2020/08/19 19:22:53 gnezdo Exp $ */ 2 3 /* 4 * Copyright (C) 1999, 2000 and 2001 AYAME Project, WIDE Project. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 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 project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/mbuf.h> 35 #include <sys/errno.h> 36 #include <sys/protosw.h> 37 #include <sys/sockio.h> 38 #include <sys/socket.h> 39 #include <sys/socketvar.h> 40 #include <sys/systm.h> 41 #include <sys/sysctl.h> 42 43 #include <net/if.h> 44 #include <net/if_var.h> 45 46 #include <netmpls/mpls.h> 47 48 int mpls_defttl = 255; 49 int mpls_push_expnull_ip = 0; 50 int mpls_push_expnull_ip6 = 0; 51 int mpls_mapttl_ip = 1; 52 int mpls_mapttl_ip6 = 0; 53 54 const struct sysctl_bounded_args mplsctl_vars[] = { 55 { MPLSCTL_DEFTTL, &mpls_defttl, 0, 255 }, 56 { MPLSCTL_MAPTTL_IP, &mpls_mapttl_ip, 0, 1 }, 57 { MPLSCTL_MAPTTL_IP6, &mpls_mapttl_ip6, 0, 1 }, 58 }; 59 60 int 61 mpls_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, 62 size_t newlen) 63 { 64 return sysctl_bounded_arr(mplsctl_vars, nitems(mplsctl_vars), 65 name, namelen, oldp, oldlenp, newp, newlen); 66 } 67