Annotation of embedaddon/pimdd/include/netbsd/netinet/ip_mroute.h, revision 1.1.1.1
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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