1 /* $FreeBSD$ */ 2 /* $KAME: ip6_mroute.h,v 1.19 2001/06/14 06:12:55 suz Exp $ */ 3 4 /*- 5 * Copyright (C) 1998 WIDE Project. 6 * All rights reserved. 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 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 /* BSDI ip_mroute.h,v 2.5 1996/10/11 16:01:48 pjd Exp */ 34 35 /* 36 * Definitions for IP multicast forwarding. 37 * 38 * Written by David Waitzman, BBN Labs, August 1988. 39 * Modified by Steve Deering, Stanford, February 1989. 40 * Modified by Ajit Thyagarajan, PARC, August 1993. 41 * Modified by Ajit Thyagarajan, PARC, August 1994. 42 * Modified by Ahmed Helmy, USC, September 1996. 43 * 44 * MROUTING Revision: 1.2 45 */ 46 47 #ifndef _NETINET6_IP6_MROUTE_H_ 48 #define _NETINET6_IP6_MROUTE_H_ 49 50 /* 51 * Multicast Routing set/getsockopt commands. 52 */ 53 #ifdef _KERNEL 54 #define MRT6_OINIT 100 /* initialize forwarder (omrt6msg) */ 55 #endif 56 #define MRT6_DONE 101 /* shut down forwarder */ 57 #define MRT6_ADD_MIF 102 /* add multicast interface */ 58 #define MRT6_DEL_MIF 103 /* delete multicast interface */ 59 #define MRT6_ADD_MFC 104 /* insert forwarding cache entry */ 60 #define MRT6_DEL_MFC 105 /* delete forwarding cache entry */ 61 #define MRT6_PIM 107 /* enable pim code */ 62 #define MRT6_INIT 108 /* initialize forwarder (mrt6msg) */ 63 64 #if BSD >= 199103 65 #define GET_TIME(t) microtime(&t) 66 #elif defined(sun) 67 #define GET_TIME(t) uniqtime(&t) 68 #else 69 #define GET_TIME(t) ((t) = time) 70 #endif 71 72 /* 73 * Types and macros for handling bitmaps with one bit per multicast interface. 74 */ 75 typedef u_short mifi_t; /* type of a mif index */ 76 #define MAXMIFS 64 77 78 #ifndef IF_SETSIZE 79 #define IF_SETSIZE 256 80 #endif 81 82 typedef u_int32_t if_mask; 83 #define NIFBITS (sizeof(if_mask) * NBBY) /* bits per mask */ 84 85 #ifndef howmany 86 #define howmany(x, y) (((x) + ((y) - 1)) / (y)) 87 #endif 88 89 typedef struct if_set { 90 if_mask ifs_bits[howmany(IF_SETSIZE, NIFBITS)]; 91 } if_set; 92 93 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS))) 94 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS))) 95 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS))) 96 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f))) 97 #define IF_ZERO(p) bzero(p, sizeof(*(p))) 98 99 /* 100 * Argument structure for MRT6_ADD_IF. 101 */ 102 struct mif6ctl { 103 mifi_t mif6c_mifi; /* the index of the mif to be added */ 104 u_char mif6c_flags; /* MIFF_ flags defined below */ 105 u_short mif6c_pifi; /* the index of the physical IF */ 106 }; 107 108 #define MIFF_REGISTER 0x1 /* mif represents a register end-point */ 109 110 /* 111 * Argument structure for MRT6_ADD_MFC and MRT6_DEL_MFC 112 */ 113 struct mf6cctl { 114 struct sockaddr_in6 mf6cc_origin; /* IPv6 origin of mcasts */ 115 struct sockaddr_in6 mf6cc_mcastgrp; /* multicast group associated */ 116 mifi_t mf6cc_parent; /* incoming ifindex */ 117 struct if_set mf6cc_ifset; /* set of forwarding ifs */ 118 }; 119 120 /* 121 * The kernel's multicast routing statistics. 122 */ 123 struct mrt6stat { 124 u_quad_t mrt6s_mfc_lookups; /* # forw. cache hash table hits */ 125 u_quad_t mrt6s_mfc_misses; /* # forw. cache hash table misses */ 126 u_quad_t mrt6s_upcalls; /* # calls to multicast routing daemon */ 127 u_quad_t mrt6s_no_route; /* no route for packet's origin */ 128 u_quad_t mrt6s_bad_tunnel; /* malformed tunnel options */ 129 u_quad_t mrt6s_cant_tunnel; /* no room for tunnel options */ 130 u_quad_t mrt6s_wrong_if; /* arrived on wrong interface */ 131 u_quad_t mrt6s_upq_ovflw; /* upcall Q overflow */ 132 u_quad_t mrt6s_cache_cleanups; /* # entries with no upcalls */ 133 u_quad_t mrt6s_drop_sel; /* pkts dropped selectively */ 134 u_quad_t mrt6s_q_overflow; /* pkts dropped - Q overflow */ 135 u_quad_t mrt6s_pkt2large; /* pkts dropped - size > BKT SIZE */ 136 u_quad_t mrt6s_upq_sockfull; /* upcalls dropped - socket full */ 137 }; 138 139 #ifdef MRT6_OINIT 140 /* 141 * Struct used to communicate from kernel to multicast router 142 * note the convenient similarity to an IPv6 header. 143 * XXX old version, superseded by mrt6msg. 144 */ 145 struct omrt6msg { 146 u_long unused1; 147 u_char im6_msgtype; /* what type of message */ 148 #if 0 149 #define MRT6MSG_NOCACHE 1 150 #define MRT6MSG_WRONGMIF 2 151 #define MRT6MSG_WHOLEPKT 3 /* used for user level encap*/ 152 #endif 153 u_char im6_mbz; /* must be zero */ 154 u_char im6_mif; /* mif rec'd on */ 155 u_char unused2; 156 struct in6_addr im6_src, im6_dst; 157 }; 158 #endif 159 160 /* 161 * Structure used to communicate from kernel to multicast router. 162 * We'll overlay the structure onto an MLD header (not an IPv6 header 163 * like igmpmsg{} used for IPv4 implementation). This is because this 164 * structure will be passed via an IPv6 raw socket, on which an application 165 * will only receive the payload i.e. the data after the IPv6 header and all 166 * the extension headers. (see Section 3 of RFC3542) 167 */ 168 struct mrt6msg { 169 #define MRT6MSG_NOCACHE 1 170 #define MRT6MSG_WRONGMIF 2 171 #define MRT6MSG_WHOLEPKT 3 /* used for user level encap*/ 172 u_char im6_mbz; /* must be zero */ 173 u_char im6_msgtype; /* what type of message */ 174 u_int16_t im6_mif; /* mif rec'd on */ 175 u_int32_t im6_pad; /* padding for 64bit arch */ 176 struct in6_addr im6_src, im6_dst; 177 }; 178 179 /* 180 * Argument structure used by multicast routing daemon to get src-grp 181 * packet counts 182 */ 183 struct sioc_sg_req6 { 184 struct sockaddr_in6 src; 185 struct sockaddr_in6 grp; 186 u_quad_t pktcnt; 187 u_quad_t bytecnt; 188 u_quad_t wrong_if; 189 }; 190 191 /* 192 * Argument structure used by mrouted to get mif pkt counts 193 */ 194 struct sioc_mif_req6 { 195 mifi_t mifi; /* mif number */ 196 u_quad_t icount; /* Input packet count on mif */ 197 u_quad_t ocount; /* Output packet count on mif */ 198 u_quad_t ibytes; /* Input byte count on mif */ 199 u_quad_t obytes; /* Output byte count on mif */ 200 }; 201 202 #if defined(_KERNEL) || defined(KERNEL) 203 /* 204 * The kernel's multicast-interface structure. 205 */ 206 struct mif6 { 207 u_char m6_flags; /* MIFF_ flags defined above */ 208 u_int m6_rate_limit; /* max rate */ 209 struct in6_addr m6_lcl_addr; /* local interface address */ 210 struct ifnet *m6_ifp; /* pointer to interface */ 211 u_quad_t m6_pkt_in; /* # pkts in on interface */ 212 u_quad_t m6_pkt_out; /* # pkts out on interface */ 213 u_quad_t m6_bytes_in; /* # bytes in on interface */ 214 u_quad_t m6_bytes_out; /* # bytes out on interface */ 215 struct route_in6 m6_route;/* cached route if this is a tunnel */ 216 #ifdef notyet 217 u_int m6_rsvp_on; /* RSVP listening on this vif */ 218 struct socket *m6_rsvpd; /* RSVP daemon socket */ 219 #endif 220 }; 221 222 /* 223 * The kernel's multicast forwarding cache entry structure 224 */ 225 struct mf6c { 226 struct sockaddr_in6 mf6c_origin; /* IPv6 origin of mcasts */ 227 struct sockaddr_in6 mf6c_mcastgrp; /* multicast group associated*/ 228 mifi_t mf6c_parent; /* incoming IF */ 229 struct if_set mf6c_ifset; /* set of outgoing IFs */ 230 231 u_quad_t mf6c_pkt_cnt; /* pkt count for src-grp */ 232 u_quad_t mf6c_byte_cnt; /* byte count for src-grp */ 233 u_quad_t mf6c_wrong_if; /* wrong if for src-grp */ 234 int mf6c_expire; /* time to clean entry up */ 235 struct timeval mf6c_last_assert; /* last time I sent an assert*/ 236 struct rtdetq *mf6c_stall; /* pkts waiting for route */ 237 struct mf6c *mf6c_next; /* hash table linkage */ 238 }; 239 240 #define MF6C_INCOMPLETE_PARENT ((mifi_t)-1) 241 242 /* 243 * Argument structure used for pkt info. while upcall is made 244 */ 245 #ifndef _NETINET_IP_MROUTE_H_ 246 struct rtdetq { /* XXX: rtdetq is also defined in ip_mroute.h */ 247 struct mbuf *m; /* A copy of the packet */ 248 struct ifnet *ifp; /* Interface pkt came in on */ 249 #ifdef UPCALL_TIMING 250 struct timeval t; /* Timestamp */ 251 #endif /* UPCALL_TIMING */ 252 struct rtdetq *next; 253 }; 254 #endif /* _NETINET_IP_MROUTE_H_ */ 255 256 #define MF6CTBLSIZ 256 257 #if (MF6CTBLSIZ & (MF6CTBLSIZ - 1)) == 0 /* from sys:route.h */ 258 #define MF6CHASHMOD(h) ((h) & (MF6CTBLSIZ - 1)) 259 #else 260 #define MF6CHASHMOD(h) ((h) % MF6CTBLSIZ) 261 #endif 262 263 #define MAX_UPQ6 4 /* max. no of pkts in upcall Q */ 264 265 extern int (*ip6_mrouter_set)(struct socket *so, struct sockopt *sopt); 266 extern int (*ip6_mrouter_get)(struct socket *so, struct sockopt *sopt); 267 extern int (*ip6_mrouter_done)(void); 268 extern int (*mrt6_ioctl)(int, caddr_t); 269 #endif /* _KERNEL */ 270 271 #endif /* !_NETINET6_IP6_MROUTE_H_ */ 272