1 /* $OpenBSD: mpls_raw.c,v 1.13 2015/11/24 13:37:16 mpi 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 #define MPLS_RAW_SNDQ 8192 49 #define MPLS_RAW_RCVQ 8192 50 51 u_long mpls_raw_sendspace = MPLS_RAW_SNDQ; 52 u_long mpls_raw_recvspace = MPLS_RAW_RCVQ; 53 54 int mpls_defttl = 255; 55 int mpls_inkloop = MPLS_INKERNEL_LOOP_MAX; 56 int mpls_push_expnull_ip = 0; 57 int mpls_push_expnull_ip6 = 0; 58 int mpls_mapttl_ip = 1; 59 int mpls_mapttl_ip6 = 0; 60 61 int *mplsctl_vars[MPLSCTL_MAXID] = MPLSCTL_VARS; 62 63 int mpls_control(struct socket *, u_long, caddr_t, struct ifnet *); 64 65 /* 66 * Generic MPLS control operations (ioctl's). 67 * Ifp is 0 if not an interface-specific ioctl. 68 */ 69 /* ARGSUSED */ 70 int 71 mpls_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp) 72 { 73 return (EOPNOTSUPP); 74 } 75 76 int 77 mpls_raw_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam, 78 struct mbuf *control, struct proc *p) 79 { 80 int error = 0; 81 82 #ifdef MPLS_DEBUG 83 printf("mpls_raw_usrreq: called! (reqid=%d).\n", req); 84 #endif /* MPLS_DEBUG */ 85 86 if (req == PRU_CONTROL) 87 return (mpls_control(so, (u_long)m, (caddr_t)nam, 88 (struct ifnet *)control)); 89 90 switch (req) { 91 case PRU_ATTACH: 92 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 93 error = soreserve(so, mpls_raw_sendspace, 94 mpls_raw_recvspace); 95 if (error) 96 break; 97 } 98 break; 99 100 case PRU_DETACH: 101 case PRU_BIND: 102 case PRU_LISTEN: 103 case PRU_CONNECT: 104 case PRU_CONNECT2: 105 case PRU_DISCONNECT: 106 case PRU_SHUTDOWN: 107 case PRU_RCVD: 108 case PRU_SEND: 109 case PRU_SENSE: 110 case PRU_RCVOOB: 111 case PRU_SENDOOB: 112 case PRU_SOCKADDR: 113 case PRU_PEERADDR: 114 error = EOPNOTSUPP; 115 break; 116 117 default: 118 panic("mpls_raw_usrreq"); 119 } 120 121 return (error); 122 } 123 124 int 125 mpls_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, 126 size_t newlen) 127 { 128 if (name[0] >= MPLSCTL_MAXID) 129 return (EOPNOTSUPP); 130 131 /* Almost all sysctl names at this level are terminal. */ 132 if (namelen != 1) 133 return (ENOTDIR); 134 135 switch (name[0]) { 136 default: 137 return sysctl_int_arr(mplsctl_vars, name, namelen, 138 oldp, oldlenp, newp, newlen); 139 } 140 } 141