/* * BIRD -- Unix Routing Table Syncing * * (c) 1998--2000 Martin Mares <mj@ucw.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <sys/ioctl.h> #include <net/route.h> #undef LOCAL_DEBUG #include "nest/bird.h" #include "nest/iface.h" #include "nest/route.h" #include "nest/protocol.h" #include "lib/unix.h" #include "lib/krt.h" #include "lib/string.h" int krt_capable(rte *e) { rta *a = e->attrs; #ifdef CONFIG_AUTO_ROUTES if (a->source == RTS_DEVICE) return 0; #endif return a->cast == RTC_UNICAST && (a->dest == RTD_ROUTER || a->dest == RTD_DEVICE #ifdef RTF_REJECT || a->dest == RTD_UNREACHABLE #endif ); } static void krt_ioctl(int ioc, rte *e, char *name) { net *net = e->net; struct rtentry re; rta *a = e->attrs; bzero(&re, sizeof(re)); fill_in_sockaddr((struct sockaddr_in *) &re.rt_dst, net->n.prefix, 0); fill_in_sockaddr((struct sockaddr_in *) &re.rt_genmask, ipa_mkmask(net->n.pxlen), 0); re.rt_flags = RTF_UP; if (net->n.pxlen == 32) re.rt_flags |= RTF_HOST; switch (a->dest) { case RTD_ROUTER: fill_in_sockaddr((struct sockaddr_in *) &re.rt_gateway, a->gw, 0); re.rt_flags |= RTF_GATEWAY; break; case RTD_DEVICE: if (!a->iface) return; re.rt_dev = a->iface->name; break; #ifdef RTF_REJECT case RTD_UNREACHABLE: re.rt_flags |= RTF_REJECT; break; #endif default: bug("krt set: unknown flags, but not filtered"); } if (ioctl(if_scan_sock, ioc, &re) < 0) log(L_ERR "%s(%I/%d): %m", name, net->n.prefix, net->n.pxlen); } void krt_set_notify(struct krt_proto *p, net *net, rte *new, rte *old) { if (old) { DBG("krt_remove_route(%I/%d)\n", net->n.prefix, net->n.pxlen); krt_ioctl(SIOCDELRT, old, "SIOCDELRT"); } if (new) { DBG("krt_add_route(%I/%d)\n", net->n.prefix, net->n.pxlen); krt_ioctl(SIOCADDRT, new, "SIOCADDRT"); } } void krt_set_start(struct krt_proto *x, int first) { if (if_scan_sock < 0) bug("krt set: missing socket"); } void krt_set_construct(struct krt_config *c) { } void krt_set_shutdown(struct krt_proto *x, int last) { }