Annotation of embedaddon/pimdd/include/netbsd/netinet/ip_mroute.h, revision 1.1
1.1 ! misho 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 assert (wrong iif) 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: #define VIFF_REGISTER 0x4 /* vif used for register en/decap */
! 47:
! 48: /*
! 49: * Argument structure for MRT_ADD_VIF.
! 50: * (MRT_DEL_VIF takes a single vifi_t argument.)
! 51: */
! 52: struct vifctl {
! 53: vifi_t vifc_vifi; /* the index of the vif to be added */
! 54: u_int8_t vifc_flags; /* VIFF_ flags defined below */
! 55: u_int8_t vifc_threshold; /* min ttl required to forward on vif */
! 56: u_int32_t vifc_rate_limit; /* max rate */
! 57: struct in_addr vifc_lcl_addr;/* local interface address */
! 58: struct in_addr vifc_rmt_addr;/* remote address (tunnels only) */
! 59: };
! 60:
! 61: /*
! 62: * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC.
! 63: * (mfcc_tos to be added at a future point)
! 64: */
! 65: struct mfcctl {
! 66: struct in_addr mfcc_origin; /* ip origin of mcasts */
! 67: struct in_addr mfcc_mcastgrp; /* multicast group associated */
! 68: vifi_t mfcc_parent; /* incoming vif */
! 69: u_int8_t mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */
! 70: };
! 71:
! 72: /*
! 73: * Argument structure used by mrouted to get src-grp pkt counts.
! 74: */
! 75: struct sioc_sg_req {
! 76: struct in_addr src;
! 77: struct in_addr grp;
! 78: u_long pktcnt;
! 79: u_long bytecnt;
! 80: u_long wrong_if;
! 81: };
! 82:
! 83: /*
! 84: * Argument structure used by mrouted to get vif pkt counts.
! 85: */
! 86: struct sioc_vif_req {
! 87: vifi_t vifi; /* vif number */
! 88: u_long icount; /* input packet count on vif */
! 89: u_long ocount; /* output packet count on vif */
! 90: u_long ibytes; /* input byte count on vif */
! 91: u_long obytes; /* output byte count on vif */
! 92: };
! 93:
! 94:
! 95: /*
! 96: * The kernel's multicast routing statistics.
! 97: */
! 98: struct mrtstat {
! 99: u_long mrts_mfc_lookups; /* # forw. cache hash table hits */
! 100: u_long mrts_mfc_misses; /* # forw. cache hash table misses */
! 101: u_long mrts_upcalls; /* # calls to mrouted */
! 102: u_long mrts_no_route; /* no route for packet's origin */
! 103: u_long mrts_bad_tunnel; /* malformed tunnel options */
! 104: u_long mrts_cant_tunnel; /* no room for tunnel options */
! 105: u_long mrts_wrong_if; /* arrived on wrong interface */
! 106: u_long mrts_upq_ovflw; /* upcall Q overflow */
! 107: u_long mrts_cache_cleanups; /* # entries with no upcalls */
! 108: u_long mrts_drop_sel; /* pkts dropped selectively */
! 109: u_long mrts_q_overflow; /* pkts dropped - Q overflow */
! 110: u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */
! 111: u_long mrts_upq_sockfull; /* upcalls dropped - socket full */
! 112: };
! 113:
! 114:
! 115: #ifdef _KERNEL
! 116:
! 117: /*
! 118: * The kernel's virtual-interface structure.
! 119: */
! 120: struct vif {
! 121: struct mbuf *tbf_q, **tbf_t; /* packet queue */
! 122: struct timeval tbf_last_pkt_t; /* arr. time of last pkt */
! 123: u_int32_t tbf_n_tok; /* no of tokens in bucket */
! 124: u_int32_t tbf_q_len; /* length of queue at this vif */
! 125: u_int32_t tbf_max_q_len; /* max. queue length */
! 126:
! 127: u_int8_t v_flags; /* VIFF_ flags defined above */
! 128: u_int8_t v_threshold; /* min ttl required to forward on vif */
! 129: u_int32_t v_rate_limit; /* max rate */
! 130: struct in_addr v_lcl_addr; /* local interface address */
! 131: struct in_addr v_rmt_addr; /* remote address (tunnels only) */
! 132: struct ifnet *v_ifp; /* pointer to interface */
! 133: u_long v_pkt_in; /* # pkts in on interface */
! 134: u_long v_pkt_out; /* # pkts out on interface */
! 135: u_long v_bytes_in; /* # bytes in on interface */
! 136: u_long v_bytes_out; /* # bytes out on interface */
! 137: struct route v_route; /* cached route if this is a tunnel */
! 138: #ifdef RSVP_ISI
! 139: int v_rsvp_on; /* # RSVP listening on this vif */
! 140: struct socket *v_rsvpd; /* # RSVPD daemon */
! 141: #endif /* RSVP_ISI */
! 142: };
! 143:
! 144: /*
! 145: * The kernel's multicast forwarding cache entry structure.
! 146: * (A field for the type of service (mfc_tos) is to be added
! 147: * at a future point.)
! 148: */
! 149: struct mfc {
! 150: LIST_ENTRY(mfc) mfc_hash;
! 151: struct in_addr mfc_origin; /* ip origin of mcasts */
! 152: struct in_addr mfc_mcastgrp; /* multicast group associated */
! 153: vifi_t mfc_parent; /* incoming vif */
! 154: u_int8_t mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */
! 155: u_long mfc_pkt_cnt; /* pkt count for src-grp */
! 156: u_long mfc_byte_cnt; /* byte count for src-grp */
! 157: u_long mfc_wrong_if; /* wrong if for src-grp */
! 158: int mfc_expire; /* time to clean entry up */
! 159: struct timeval mfc_last_assert; /* last time I sent an assert */
! 160: struct rtdetq *mfc_stall; /* pkts waiting for route */
! 161: };
! 162:
! 163: /*
! 164: * Structure used to communicate from kernel to multicast router.
! 165: * (Note the convenient similarity to an IP packet.)
! 166: */
! 167: struct igmpmsg {
! 168: u_int32_t unused1;
! 169: u_int32_t unused2;
! 170: u_int8_t im_msgtype; /* what type of message */
! 171: #define IGMPMSG_NOCACHE 1
! 172: #define IGMPMSG_WRONGVIF 2
! 173: #define IGMPMSG_WHOLEPKT 3 /* send the whole packet */
! 174: u_int8_t im_mbz; /* must be zero */
! 175: u_int8_t im_vif; /* vif rec'd on */
! 176: u_int8_t unused3;
! 177: struct in_addr im_src, im_dst;
! 178: };
! 179:
! 180: /*
! 181: * Argument structure used for pkt info. while upcall is made.
! 182: */
! 183: struct rtdetq {
! 184: struct mbuf *m; /* a copy of the packet */
! 185: struct ifnet *ifp; /* interface pkt came in on */
! 186: #ifdef UPCALL_TIMING
! 187: struct timeval t; /* timestamp */
! 188: #endif /* UPCALL_TIMING */
! 189: struct rtdetq *next;
! 190: };
! 191:
! 192: #define MFCTBLSIZ 256
! 193: #define MAX_UPQ 4 /* max. no of pkts in upcall Q */
! 194:
! 195: /*
! 196: * Token bucket filter code
! 197: */
! 198: #define MAX_BKT_SIZE 10000 /* 10K bytes size */
! 199: #define MAXQSIZE 10 /* max. no of pkts in token queue */
! 200:
! 201:
! 202: int ip_mrouter_set __P((struct socket *, int, struct mbuf **));
! 203: int ip_mrouter_get __P((struct socket *, int, struct mbuf **));
! 204: int mrt_ioctl __P((struct socket *, u_long, caddr_t));
! 205: int ip_mrouter_done __P((void));
! 206: void reset_vif __P((struct vif *));
! 207: #ifdef RSVP_ISI
! 208: int ip_mforward __P((struct mbuf *, struct ifnet *, struct ip_moptions *));
! 209: int legal_vif_num __P((int));
! 210: int ip_rsvp_vif_init __P((struct socket *, struct mbuf *));
! 211: int ip_rsvp_vif_done __P((struct socket *, struct mbuf *));
! 212: void ip_rsvp_force_done __P((struct socket *));
! 213: void rsvp_input __P((struct mbuf *, struct ifnet *));
! 214: #else
! 215: int ip_mforward __P((struct mbuf *, struct ifnet *));
! 216: #endif
! 217: void ipip_input __P((struct mbuf *, ...));
! 218:
! 219: #endif /* _KERNEL */
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