ip_mroute.h revision 1.15
1 /* $NetBSD: ip_mroute.h,v 1.15 1999/01/11 21:31:03 thorpej Exp $ */ 2 3 /* 4 * Definitions for IP multicast forwarding. 5 * 6 * Written by David Waitzman, BBN Labs, August 1988. 7 * Modified by Steve Deering, Stanford, February 1989. 8 * Modified by Ajit Thyagarajan, PARC, August 1993. 9 * Modified by Ajit Thyagarajan, PARC, August 1994. 10 * 11 * MROUTING Revision: 1.2 12 */ 13 14 #ifndef _NETINET_IP_MROUTE_H_ 15 #define _NETINET_IP_MROUTE_H_ 16 17 #include <sys/queue.h> 18 19 /* 20 * Multicast Routing set/getsockopt commands. 21 */ 22 #define MRT_INIT 100 /* initialize forwarder */ 23 #define MRT_DONE 101 /* shut down forwarder */ 24 #define MRT_ADD_VIF 102 /* create virtual interface */ 25 #define MRT_DEL_VIF 103 /* delete virtual interface */ 26 #define MRT_ADD_MFC 104 /* insert forwarding cache entry */ 27 #define MRT_DEL_MFC 105 /* delete forwarding cache entry */ 28 #define MRT_VERSION 106 /* get kernel version number */ 29 #define MRT_ASSERT 107 /* enable PIM assert processing */ 30 31 32 /* 33 * Types and macros for handling bitmaps with one bit per virtual interface. 34 */ 35 #define MAXVIFS 32 36 typedef u_int32_t vifbitmap_t; 37 typedef u_int16_t vifi_t; /* type of a vif index */ 38 39 #define VIFM_SET(n, m) ((m) |= (1 << (n))) 40 #define VIFM_CLR(n, m) ((m) &= ~(1 << (n))) 41 #define VIFM_ISSET(n, m) ((m) & (1 << (n))) 42 #define VIFM_SETALL(m) ((m) = 0xffffffff) 43 #define VIFM_CLRALL(m) ((m) = 0x00000000) 44 #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom)) 45 #define VIFM_SAME(m1, m2) ((m1) == (m2)) 46 47 #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */ 48 #define VIFF_SRCRT 0x2 /* tunnel uses IP src routing */ 49 50 /* 51 * Argument structure for MRT_ADD_VIF. 52 * (MRT_DEL_VIF takes a single vifi_t argument.) 53 */ 54 struct vifctl { 55 vifi_t vifc_vifi; /* the index of the vif to be added */ 56 u_int8_t vifc_flags; /* VIFF_ flags defined below */ 57 u_int8_t vifc_threshold; /* min ttl required to forward on vif */ 58 u_int32_t vifc_rate_limit; /* max rate */ 59 struct in_addr vifc_lcl_addr;/* local interface address */ 60 struct in_addr vifc_rmt_addr;/* remote address (tunnels only) */ 61 }; 62 63 /* 64 * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC. 65 * (mfcc_tos to be added at a future point) 66 */ 67 struct mfcctl { 68 struct in_addr mfcc_origin; /* ip origin of mcasts */ 69 struct in_addr mfcc_mcastgrp; /* multicast group associated */ 70 vifi_t mfcc_parent; /* incoming vif */ 71 u_int8_t mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ 72 }; 73 74 /* 75 * Argument structure used by mrouted to get src-grp pkt counts. 76 */ 77 struct sioc_sg_req { 78 struct in_addr src; 79 struct in_addr grp; 80 u_long pktcnt; 81 u_long bytecnt; 82 u_long wrong_if; 83 }; 84 85 /* 86 * Argument structure used by mrouted to get vif pkt counts. 87 */ 88 struct sioc_vif_req { 89 vifi_t vifi; /* vif number */ 90 u_long icount; /* input packet count on vif */ 91 u_long ocount; /* output packet count on vif */ 92 u_long ibytes; /* input byte count on vif */ 93 u_long obytes; /* output byte count on vif */ 94 }; 95 96 97 /* 98 * The kernel's multicast routing statistics. 99 */ 100 struct mrtstat { 101 u_long mrts_mfc_lookups; /* # forw. cache hash table hits */ 102 u_long mrts_mfc_misses; /* # forw. cache hash table misses */ 103 u_long mrts_upcalls; /* # calls to mrouted */ 104 u_long mrts_no_route; /* no route for packet's origin */ 105 u_long mrts_bad_tunnel; /* malformed tunnel options */ 106 u_long mrts_cant_tunnel; /* no room for tunnel options */ 107 u_long mrts_wrong_if; /* arrived on wrong interface */ 108 u_long mrts_upq_ovflw; /* upcall Q overflow */ 109 u_long mrts_cache_cleanups; /* # entries with no upcalls */ 110 u_long mrts_drop_sel; /* pkts dropped selectively */ 111 u_long mrts_q_overflow; /* pkts dropped - Q overflow */ 112 u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */ 113 u_long mrts_upq_sockfull; /* upcalls dropped - socket full */ 114 }; 115 116 117 #ifdef _KERNEL 118 119 /* 120 * The kernel's virtual-interface structure. 121 */ 122 struct vif { 123 struct mbuf *tbf_q, **tbf_t; /* packet queue */ 124 struct timeval tbf_last_pkt_t; /* arr. time of last pkt */ 125 u_int32_t tbf_n_tok; /* no of tokens in bucket */ 126 u_int32_t tbf_q_len; /* length of queue at this vif */ 127 u_int32_t tbf_max_q_len; /* max. queue length */ 128 129 u_int8_t v_flags; /* VIFF_ flags defined above */ 130 u_int8_t v_threshold; /* min ttl required to forward on vif */ 131 u_int32_t v_rate_limit; /* max rate */ 132 struct in_addr v_lcl_addr; /* local interface address */ 133 struct in_addr v_rmt_addr; /* remote address (tunnels only) */ 134 struct ifnet *v_ifp; /* pointer to interface */ 135 u_long v_pkt_in; /* # pkts in on interface */ 136 u_long v_pkt_out; /* # pkts out on interface */ 137 u_long v_bytes_in; /* # bytes in on interface */ 138 u_long v_bytes_out; /* # bytes out on interface */ 139 struct route v_route; /* cached route if this is a tunnel */ 140 #ifdef RSVP_ISI 141 int v_rsvp_on; /* # RSVP listening on this vif */ 142 struct socket *v_rsvpd; /* # RSVPD daemon */ 143 #endif /* RSVP_ISI */ 144 }; 145 146 /* 147 * The kernel's multicast forwarding cache entry structure. 148 * (A field for the type of service (mfc_tos) is to be added 149 * at a future point.) 150 */ 151 struct mfc { 152 LIST_ENTRY(mfc) mfc_hash; 153 struct in_addr mfc_origin; /* ip origin of mcasts */ 154 struct in_addr mfc_mcastgrp; /* multicast group associated */ 155 vifi_t mfc_parent; /* incoming vif */ 156 u_int8_t mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ 157 u_long mfc_pkt_cnt; /* pkt count for src-grp */ 158 u_long mfc_byte_cnt; /* byte count for src-grp */ 159 u_long mfc_wrong_if; /* wrong if for src-grp */ 160 int mfc_expire; /* time to clean entry up */ 161 struct timeval mfc_last_assert; /* last time I sent an assert */ 162 struct rtdetq *mfc_stall; /* pkts waiting for route */ 163 }; 164 165 /* 166 * Structure used to communicate from kernel to multicast router. 167 * (Note the convenient similarity to an IP packet.) 168 */ 169 struct igmpmsg { 170 u_int32_t unused1; 171 u_int32_t unused2; 172 u_int8_t im_msgtype; /* what type of message */ 173 #define IGMPMSG_NOCACHE 1 174 #define IGMPMSG_WRONGVIF 2 175 u_int8_t im_mbz; /* must be zero */ 176 u_int8_t im_vif; /* vif rec'd on */ 177 u_int8_t unused3; 178 struct in_addr im_src, im_dst; 179 }; 180 181 /* 182 * Argument structure used for pkt info. while upcall is made. 183 */ 184 struct rtdetq { 185 struct mbuf *m; /* a copy of the packet */ 186 struct ifnet *ifp; /* interface pkt came in on */ 187 #ifdef UPCALL_TIMING 188 struct timeval t; /* timestamp */ 189 #endif /* UPCALL_TIMING */ 190 struct rtdetq *next; 191 }; 192 193 #define MFCTBLSIZ 256 194 #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ 195 196 /* 197 * Token bucket filter code 198 */ 199 #define MAX_BKT_SIZE 10000 /* 10K bytes size */ 200 #define MAXQSIZE 10 /* max. no of pkts in token queue */ 201 202 203 int ip_mrouter_set __P((struct socket *, int, struct mbuf **)); 204 int ip_mrouter_get __P((struct socket *, int, struct mbuf **)); 205 int mrt_ioctl __P((struct socket *, u_long, caddr_t)); 206 int ip_mrouter_done __P((void)); 207 void reset_vif __P((struct vif *)); 208 #ifdef RSVP_ISI 209 int ip_mforward __P((struct mbuf *, struct ifnet *, struct ip_moptions *)); 210 int legal_vif_num __P((int)); 211 int ip_rsvp_vif_init __P((struct socket *, struct mbuf *)); 212 int ip_rsvp_vif_done __P((struct socket *, struct mbuf *)); 213 void ip_rsvp_force_done __P((struct socket *)); 214 void rsvp_input __P((struct mbuf *, struct ifnet *)); 215 #else 216 int ip_mforward __P((struct mbuf *, struct ifnet *)); 217 #endif 218 int mrt_ipip_input __P((struct mbuf *, int)); 219 220 #endif /* _KERNEL */ 221 222 #endif /* _NETINET_IP_MROUTE_H_ */ 223
Indexes created Tue Sep 30 07:10:03 GMT 2025