ip_mroute.h revision 1.12
1 /* $NetBSD: ip_mroute.h,v 1.12 1996/09/09 17:14:05 mycroft 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 #include <sys/queue.h> 15 16 /* 17 * Multicast Routing set/getsockopt commands. 18 */ 19 #define MRT_INIT 100 /* initialize forwarder */ 20 #define MRT_DONE 101 /* shut down forwarder */ 21 #define MRT_ADD_VIF 102 /* create virtual interface */ 22 #define MRT_DEL_VIF 103 /* delete virtual interface */ 23 #define MRT_ADD_MFC 104 /* insert forwarding cache entry */ 24 #define MRT_DEL_MFC 105 /* delete forwarding cache entry */ 25 #define MRT_VERSION 106 /* get kernel version number */ 26 #define MRT_ASSERT 107 /* enable PIM assert processing */ 27 28 29 /* 30 * Types and macros for handling bitmaps with one bit per virtual interface. 31 */ 32 #define MAXVIFS 32 33 typedef u_int32_t vifbitmap_t; 34 typedef u_int16_t vifi_t; /* type of a vif index */ 35 36 #define VIFM_SET(n, m) ((m) |= (1 << (n))) 37 #define VIFM_CLR(n, m) ((m) &= ~(1 << (n))) 38 #define VIFM_ISSET(n, m) ((m) & (1 << (n))) 39 #define VIFM_SETALL(m) ((m) = 0xffffffff) 40 #define VIFM_CLRALL(m) ((m) = 0x00000000) 41 #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom)) 42 #define VIFM_SAME(m1, m2) ((m1) == (m2)) 43 44 #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */ 45 #define VIFF_SRCRT 0x2 /* tunnel uses IP src routing */ 46 47 /* 48 * Argument structure for MRT_ADD_VIF. 49 * (MRT_DEL_VIF takes a single vifi_t argument.) 50 */ 51 struct vifctl { 52 vifi_t vifc_vifi; /* the index of the vif to be added */ 53 u_int8_t vifc_flags; /* VIFF_ flags defined below */ 54 u_int8_t vifc_threshold; /* min ttl required to forward on vif */ 55 u_int32_t vifc_rate_limit; /* max rate */ 56 struct in_addr vifc_lcl_addr;/* local interface address */ 57 struct in_addr vifc_rmt_addr;/* remote address (tunnels only) */ 58 }; 59 60 /* 61 * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC. 62 * (mfcc_tos to be added at a future point) 63 */ 64 struct mfcctl { 65 struct in_addr mfcc_origin; /* ip origin of mcasts */ 66 struct in_addr mfcc_mcastgrp; /* multicast group associated */ 67 vifi_t mfcc_parent; /* incoming vif */ 68 u_int8_t mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ 69 }; 70 71 /* 72 * Argument structure used by mrouted to get src-grp pkt counts. 73 */ 74 struct sioc_sg_req { 75 struct in_addr src; 76 struct in_addr grp; 77 u_long pktcnt; 78 u_long bytecnt; 79 u_long wrong_if; 80 }; 81 82 /* 83 * Argument structure used by mrouted to get vif pkt counts. 84 */ 85 struct sioc_vif_req { 86 vifi_t vifi; /* vif number */ 87 u_long icount; /* input packet count on vif */ 88 u_long ocount; /* output packet count on vif */ 89 u_long ibytes; /* input byte count on vif */ 90 u_long obytes; /* output byte count on vif */ 91 }; 92 93 94 /* 95 * The kernel's multicast routing statistics. 96 */ 97 struct mrtstat { 98 u_long mrts_mfc_lookups; /* # forw. cache hash table hits */ 99 u_long mrts_mfc_misses; /* # forw. cache hash table misses */ 100 u_long mrts_upcalls; /* # calls to mrouted */ 101 u_long mrts_no_route; /* no route for packet's origin */ 102 u_long mrts_bad_tunnel; /* malformed tunnel options */ 103 u_long mrts_cant_tunnel; /* no room for tunnel options */ 104 u_long mrts_wrong_if; /* arrived on wrong interface */ 105 u_long mrts_upq_ovflw; /* upcall Q overflow */ 106 u_long mrts_cache_cleanups; /* # entries with no upcalls */ 107 u_long mrts_drop_sel; /* pkts dropped selectively */ 108 u_long mrts_q_overflow; /* pkts dropped - Q overflow */ 109 u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */ 110 u_long mrts_upq_sockfull; /* upcalls dropped - socket full */ 111 }; 112 113 114 #ifdef _KERNEL 115 116 /* 117 * The kernel's virtual-interface structure. 118 */ 119 struct vif { 120 struct mbuf *tbf_q, **tbf_t; /* packet queue */ 121 struct timeval tbf_last_pkt_t; /* arr. time of last pkt */ 122 u_int32_t tbf_n_tok; /* no of tokens in bucket */ 123 u_int32_t tbf_q_len; /* length of queue at this vif */ 124 u_int32_t tbf_max_q_len; /* max. queue length */ 125 126 u_int8_t v_flags; /* VIFF_ flags defined above */ 127 u_int8_t v_threshold; /* min ttl required to forward on vif */ 128 u_int32_t v_rate_limit; /* max rate */ 129 struct in_addr v_lcl_addr; /* local interface address */ 130 struct in_addr v_rmt_addr; /* remote address (tunnels only) */ 131 struct ifnet *v_ifp; /* pointer to interface */ 132 u_long v_pkt_in; /* # pkts in on interface */ 133 u_long v_pkt_out; /* # pkts out on interface */ 134 u_long v_bytes_in; /* # bytes in on interface */ 135 u_long v_bytes_out; /* # bytes out on interface */ 136 struct route v_route; /* cached route if this is a tunnel */ 137 #ifdef RSVP_ISI 138 int v_rsvp_on; /* # RSVP listening on this vif */ 139 struct socket *v_rsvpd; /* # RSVPD daemon */ 140 #endif /* RSVP_ISI */ 141 }; 142 143 /* 144 * The kernel's multicast forwarding cache entry structure. 145 * (A field for the type of service (mfc_tos) is to be added 146 * at a future point.) 147 */ 148 struct mfc { 149 LIST_ENTRY(mfc) mfc_hash; 150 struct in_addr mfc_origin; /* ip origin of mcasts */ 151 struct in_addr mfc_mcastgrp; /* multicast group associated */ 152 vifi_t mfc_parent; /* incoming vif */ 153 u_int8_t mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ 154 u_long mfc_pkt_cnt; /* pkt count for src-grp */ 155 u_long mfc_byte_cnt; /* byte count for src-grp */ 156 u_long mfc_wrong_if; /* wrong if for src-grp */ 157 int mfc_expire; /* time to clean entry up */ 158 struct timeval mfc_last_assert; /* last time I sent an assert */ 159 struct rtdetq *mfc_stall; /* pkts waiting for route */ 160 }; 161 162 /* 163 * Structure used to communicate from kernel to multicast router. 164 * (Note the convenient similarity to an IP packet.) 165 */ 166 struct igmpmsg { 167 u_int32_t unused1; 168 u_int32_t unused2; 169 u_int8_t im_msgtype; /* what type of message */ 170 #define IGMPMSG_NOCACHE 1 171 #define IGMPMSG_WRONGVIF 2 172 u_int8_t im_mbz; /* must be zero */ 173 u_int8_t im_vif; /* vif rec'd on */ 174 u_int8_t unused3; 175 struct in_addr im_src, im_dst; 176 }; 177 178 /* 179 * Argument structure used for pkt info. while upcall is made. 180 */ 181 struct rtdetq { 182 struct mbuf *m; /* a copy of the packet */ 183 struct ifnet *ifp; /* interface pkt came in on */ 184 #ifdef UPCALL_TIMING 185 struct timeval t; /* timestamp */ 186 #endif /* UPCALL_TIMING */ 187 struct rtdetq *next; 188 }; 189 190 #define MFCTBLSIZ 256 191 #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ 192 193 /* 194 * Token bucket filter code 195 */ 196 #define MAX_BKT_SIZE 10000 /* 10K bytes size */ 197 #define MAXQSIZE 10 /* max. no of pkts in token queue */ 198 199 200 int ip_mrouter_set __P((struct socket *, int, struct mbuf **)); 201 int ip_mrouter_get __P((struct socket *, int, struct mbuf **)); 202 int mrt_ioctl __P((struct socket *, u_long, caddr_t)); 203 int ip_mrouter_done __P((void)); 204 void reset_vif __P((struct vif *)); 205 #ifdef RSVP_ISI 206 int ip_mforward __P((struct mbuf *, struct ifnet *, struct ip_moptions *)); 207 int legal_vif_num __P((int)); 208 int ip_rsvp_vif_init __P((struct socket *, struct mbuf *)); 209 int ip_rsvp_vif_done __P((struct socket *, struct mbuf *)); 210 void ip_rsvp_force_done __P((struct socket *)); 211 void rsvp_input __P((struct mbuf *, struct ifnet *)); 212 #else 213 int ip_mforward __P((struct mbuf *, struct ifnet *)); 214 #endif 215 void ipip_input __P((struct mbuf *, ...)); 216 217 #endif /* _KERNEL */ 218
Indexes created Tue Sep 30 07:10:03 GMT 2025