Annotation of embedaddon/pimdd/include/sunos-gcc/netinet/ip_mroute.h, revision 1.1.1.1
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: 1.2 $
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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