Annotation of embedaddon/pimdd/include/sunos-cc/netinet/ip_mroute.h, revision 1.1
1.1 ! misho 1: /*
! 2: * Definitions for IP multicast forwarding.
! 3: *
! 4: * Written by David Waitzman, BBN Labs, August 1988.
! 5: * Modified by Steve Deering, Stanford, February 1989.
! 6: * Modified by Ajit Thyagarajan, PARC, August 1993.
! 7: * Modified by Ajit Thyagarajan, PARC, August 1994.
! 8: * Modified by Ahmed Helmy, USC, September 1996.
! 9: *
! 10: * MROUTING $Revision: 1.3 $
! 11: */
! 12:
! 13:
! 14: /*
! 15: * Multicast Routing set/getsockopt commands.
! 16: */
! 17: #define MRT_INIT 100 /* initialize forwarder */
! 18: #define MRT_DONE 101 /* shut down forwarder */
! 19: #define MRT_ADD_VIF 102 /* create virtual interface */
! 20: #define MRT_DEL_VIF 103 /* delete virtual interface */
! 21: #define MRT_ADD_MFC 104 /* insert forwarding cache entry */
! 22: #define MRT_DEL_MFC 105 /* delete forwarding cache entry */
! 23: #define MRT_VERSION 106 /* get kernel version number */
! 24: #define MRT_ASSERT 107 /* enable assert (wrong iif) processing */
! 25:
! 26:
! 27: #if BSD >= 199103
! 28: #define GET_TIME(t) microtime(&t)
! 29: #elif defined(sun)
! 30: #define GET_TIME(t) uniqtime(&t)
! 31: #else
! 32: #define GET_TIME(t) ((t) = time)
! 33: #endif
! 34:
! 35: /*
! 36: * Types and macros for handling bitmaps with one bit per virtual interface.
! 37: */
! 38: #define MAXVIFS 32
! 39: typedef u_long vifbitmap_t;
! 40: typedef u_short vifi_t; /* type of a vif index */
! 41: #define ALL_VIFS (vifi_t)-1
! 42:
! 43: #define VIFM_SET(n, m) ((m) |= (1 << (n)))
! 44: #define VIFM_CLR(n, m) ((m) &= ~(1 << (n)))
! 45: #define VIFM_ISSET(n, m) ((m) & (1 << (n)))
! 46: #define VIFM_CLRALL(m) ((m) = 0x00000000)
! 47: #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom))
! 48: #define VIFM_SAME(m1, m2) ((m1) == (m2))
! 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_char vifc_flags; /* VIFF_ flags defined below */
! 57: u_char vifc_threshold; /* min ttl required to forward on vif*/
! 58: u_int 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: #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */
! 64: #define VIFF_SRCRT 0x2 /* tunnel uses IP src routing */
! 65: #define VIFF_REGISTER 0x4 /* vif used for register en/decap */
! 66:
! 67:
! 68: /*
! 69: * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC
! 70: * (mfcc_tos to be added at a future point)
! 71: */
! 72: struct mfcctl {
! 73: struct in_addr mfcc_origin; /* ip origin of mcasts */
! 74: struct in_addr mfcc_mcastgrp; /* multicast group associated*/
! 75: vifi_t mfcc_parent; /* incoming vif */
! 76: u_char mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */
! 77: };
! 78:
! 79: /*
! 80: * The kernel's multicast routing statistics.
! 81: */
! 82: struct mrtstat {
! 83: u_long mrts_mfc_lookups; /* # forw. cache hash table hits */
! 84: u_long mrts_mfc_misses; /* # forw. cache hash table misses */
! 85: u_long mrts_upcalls; /* # calls to mrouted */
! 86: u_long mrts_no_route; /* no route for packet's origin */
! 87: u_long mrts_bad_tunnel; /* malformed tunnel options */
! 88: u_long mrts_cant_tunnel; /* no room for tunnel options */
! 89: u_long mrts_wrong_if; /* arrived on wrong interface */
! 90: u_long mrts_upq_ovflw; /* upcall Q overflow */
! 91: u_long mrts_cache_cleanups; /* # entries with no upcalls */
! 92: u_long mrts_drop_sel; /* pkts dropped selectively */
! 93: u_long mrts_q_overflow; /* pkts dropped - Q overflow */
! 94: u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */
! 95: u_long mrts_upq_sockfull; /* upcalls dropped - socket full */
! 96: };
! 97:
! 98: /*
! 99: * Argument structure used by mrouted to get src-grp pkt counts
! 100: */
! 101: struct sioc_sg_req {
! 102: struct in_addr src;
! 103: struct in_addr grp;
! 104: u_long pktcnt;
! 105: u_long bytecnt;
! 106: u_long wrong_if;
! 107: };
! 108:
! 109: /*
! 110: * Argument structure used by mrouted to get vif pkt counts
! 111: */
! 112: struct sioc_vif_req {
! 113: vifi_t vifi; /* vif number */
! 114: u_long icount; /* Input packet count on vif */
! 115: u_long ocount; /* Output packet count on vif */
! 116: u_long ibytes; /* Input byte count on vif */
! 117: u_long obytes; /* Output byte count on vif */
! 118: };
! 119:
! 120: #ifdef KERNEL
! 121: /*
! 122: * Argument structure used by PIM to get the RPF neighbor and IIF info
! 123: * for a given source, from the unicast routing tables.
! 124: * Maybe be substituted by routing sockets for the supporting systems
! 125: */
! 126: struct rpfctl {
! 127: struct in_addr source; /* the source for which we want iif and rpfnbr */
! 128: struct in_addr rpfneighbor;/* next hop towards the source */
! 129: vifi_t iif;/* the incoming interface to reach the next hop */
! 130: };
! 131:
! 132: /*
! 133: * The kernel's virtual-interface structure.
! 134: */
! 135: struct vif {
! 136: u_char v_flags; /* VIFF_ flags defined above */
! 137: u_char v_threshold; /* min ttl required to forward on vif*/
! 138: u_int v_rate_limit; /* max rate */
! 139: struct tbf *v_tbf; /* token bucket structure at intf. */
! 140: struct in_addr v_lcl_addr; /* local interface address */
! 141: struct in_addr v_rmt_addr; /* remote address (tunnels only) */
! 142: struct ifnet *v_ifp; /* pointer to interface */
! 143: u_long v_pkt_in; /* # pkts in on interface */
! 144: u_long v_pkt_out; /* # pkts out on interface */
! 145: u_long v_bytes_in; /* # bytes in on interface */
! 146: u_long v_bytes_out; /* # bytes out on interface */
! 147: struct route v_route; /* Cached route if this is a tunnel */
! 148: #ifdef RSVP_ISI
! 149: u_int v_rsvp_on; /* # RSVP listening on this vif */
! 150: struct socket *v_rsvpd; /* # RSVPD daemon */
! 151: #endif /* RSVP_ISI */
! 152: };
! 153:
! 154: /*
! 155: * The kernel's multicast forwarding cache entry structure
! 156: * (A field for the type of service (mfc_tos) is to be added
! 157: * at a future point)
! 158: */
! 159: struct mfc {
! 160: struct in_addr mfc_origin; /* ip origin of mcasts */
! 161: struct in_addr mfc_mcastgrp; /* multicast group associated*/
! 162: vifi_t mfc_parent; /* incoming vif */
! 163: u_char mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */
! 164: u_long mfc_pkt_cnt; /* pkt count for src-grp */
! 165: u_long mfc_byte_cnt; /* byte count for src-grp */
! 166: u_long mfc_wrong_if; /* wrong if for src-grp */
! 167: int mfc_expire; /* time to clean entry up */
! 168: struct timeval mfc_last_assert; /* last time I sent an assert*/
! 169: };
! 170: #endif /* KERNEL */
! 171: /*
! 172: * Struct used to communicate from kernel to multicast router
! 173: * note the convenient similarity to an IP packet
! 174: */
! 175: struct igmpmsg {
! 176: u_long unused1;
! 177: u_long unused2;
! 178: u_char im_msgtype; /* what type of message */
! 179: #define IGMPMSG_NOCACHE 1
! 180: #define IGMPMSG_WRONGVIF 2
! 181: #define IGMPMSG_WHOLEPKT 3 /* used for user level encap */
! 182: u_char im_mbz; /* must be zero */
! 183: u_char im_vif; /* vif rec'd on */
! 184: u_char unused3;
! 185: struct in_addr im_src, im_dst;
! 186: };
! 187:
! 188: #ifdef KERNEL
! 189: /*
! 190: * Argument structure used for pkt info. while upcall is made
! 191: */
! 192: struct rtdetq {
! 193: struct mbuf *m; /* A copy of the packet */
! 194: struct ifnet *ifp; /* Interface pkt came in on */
! 195: #ifdef UPCALL_TIMING
! 196: struct timeval t; /* Timestamp */
! 197: #endif /* UPCALL_TIMING */
! 198: };
! 199:
! 200: #define MFCTBLSIZ 256
! 201: #if (MFCTBLSIZ & (MFCTBLSIZ - 1)) == 0 /* from sys:route.h */
! 202: #define MFCHASHMOD(h) ((h) & (MFCTBLSIZ - 1))
! 203: #else
! 204: #define MFCHASHMOD(h) ((h) % MFCTBLSIZ)
! 205: #endif
! 206:
! 207: #define MAX_UPQ 4 /* max. no of pkts in upcall Q */
! 208:
! 209: /*
! 210: * Token Bucket filter code
! 211: */
! 212: #define MAX_BKT_SIZE 10000 /* 10K bytes size */
! 213: #define MAXQSIZE 10 /* max # of pkts in queue */
! 214:
! 215: /*
! 216: * queue structure at each vif
! 217: */
! 218: struct pkt_queue
! 219: {
! 220: u_long pkt_len; /* length of packet in queue */
! 221: struct mbuf *pkt_m; /* pointer to packet mbuf */
! 222: struct ip *pkt_ip; /* pointer to ip header */
! 223: };
! 224:
! 225: /*
! 226: * the token bucket filter at each vif
! 227: */
! 228: struct tbf
! 229: {
! 230: u_long last_pkt_t; /* arr. time of last pkt */
! 231: u_long n_tok; /* no of tokens in bucket */
! 232: u_long q_len; /* length of queue at this vif */
! 233: };
! 234:
! 235: #endif /* KERNEL */
! 236:
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