projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 7e7de0c9 | 1 | #ifndef lint |
| 7fe7fe74 | 2 | static char sccsid[] = "@(#)output.c 4.2 %G%"; |
| 7e7de0c9 SL |
3 | #endif |
| 4 | ||
| 5 | /* | |
| 6 | * Routing Table Management Daemon | |
| 7 | */ | |
| 7fe7fe74 | 8 | #include "defs.h" |
| 7e7de0c9 SL |
9 | |
| 10 | /* | |
| 11 | * Apply the function "f" to all non-passive | |
| 12 | * interfaces. If the interface supports the | |
| 13 | * use of broadcasting use it, otherwise address | |
| 14 | * the output to the known router. | |
| 15 | */ | |
| 16 | toall(f) | |
| 17 | int (*f)(); | |
| 18 | { | |
| 19 | register struct interface *ifp; | |
| 20 | register struct sockaddr *dst; | |
| 7fe7fe74 | 21 | register int flags; |
| 7e7de0c9 SL |
22 | extern struct interface *ifnet; |
| 23 | ||
| 24 | for (ifp = ifnet; ifp; ifp = ifp->int_next) { | |
| 25 | if (ifp->int_flags & IFF_PASSIVE) | |
| 26 | continue; | |
| 27 | dst = ifp->int_flags & IFF_BROADCAST ? &ifp->int_broadaddr : | |
| 28 | ifp->int_flags & IFF_POINTOPOINT ? &ifp->int_dstaddr : | |
| 29 | &ifp->int_addr; | |
| 7fe7fe74 SL |
30 | flags = ifp->int_flags & IFF_INTERFACE ? SOF_DONTROUTE : 0; |
| 31 | (*f)(dst, flags, ifp); | |
| 7e7de0c9 SL |
32 | } |
| 33 | } | |
| 34 | ||
| 35 | /* | |
| 36 | * Output a preformed packet. | |
| 37 | */ | |
| 38 | /*ARGSUSED*/ | |
| 7fe7fe74 | 39 | sendmsg(dst, flags, ifp) |
| 7e7de0c9 | 40 | struct sockaddr *dst; |
| 7fe7fe74 | 41 | int flags; |
| 7e7de0c9 SL |
42 | struct interface *ifp; |
| 43 | { | |
| 44 | ||
| 7fe7fe74 | 45 | (*afswitch[dst->sa_family].af_output)(s, flags, |
| 7e7de0c9 SL |
46 | dst, sizeof (struct rip)); |
| 47 | TRACE_OUTPUT(ifp, dst, sizeof (struct rip)); | |
| 48 | } | |
| 49 | ||
| 50 | /* | |
| 51 | * Supply dst with the contents of the routing tables. | |
| 52 | * If this won't fit in one packet, chop it up into several. | |
| 53 | */ | |
| 7fe7fe74 | 54 | supply(dst, flags, ifp) |
| 7e7de0c9 | 55 | struct sockaddr *dst; |
| 7fe7fe74 | 56 | int flags; |
| 7e7de0c9 SL |
57 | struct interface *ifp; |
| 58 | { | |
| 59 | register struct rt_entry *rt; | |
| 60 | struct netinfo *n = msg->rip_nets; | |
| 61 | register struct rthash *rh; | |
| 62 | struct rthash *base = hosthash; | |
| 63 | int doinghost = 1, size; | |
| 64 | int (*output)() = afswitch[dst->sa_family].af_output; | |
| 7e7de0c9 SL |
65 | |
| 66 | msg->rip_cmd = RIPCMD_RESPONSE; | |
| 67 | again: | |
| 68 | for (rh = base; rh < &base[ROUTEHASHSIZ]; rh++) | |
| 69 | for (rt = rh->rt_forw; rt != (struct rt_entry *)rh; rt = rt->rt_forw) { | |
| 70 | size = (char *)n - packet; | |
| 71 | if (size > MAXPACKETSIZE - sizeof (struct netinfo)) { | |
| 7fe7fe74 | 72 | (*output)(s, flags, dst, size); |
| 7e7de0c9 SL |
73 | TRACE_OUTPUT(ifp, dst, size); |
| 74 | n = msg->rip_nets; | |
| 75 | } | |
| 76 | n->rip_dst = rt->rt_dst; | |
| 77 | n->rip_metric = min(rt->rt_metric + 1, HOPCNT_INFINITY); | |
| 78 | n++; | |
| 79 | } | |
| 80 | if (doinghost) { | |
| 81 | doinghost = 0; | |
| 82 | base = nethash; | |
| 83 | goto again; | |
| 84 | } | |
| 85 | if (n != msg->rip_nets) { | |
| 86 | size = (char *)n - packet; | |
| 7fe7fe74 | 87 | (*output)(s, flags, dst, size); |
| 7e7de0c9 SL |
88 | TRACE_OUTPUT(ifp, dst, size); |
| 89 | } | |
| 90 | } |