diff options
Diffstat (limited to 'sysdep/unix/sync-if.c')
| -rw-r--r-- | sysdep/unix/sync-if.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/sysdep/unix/sync-if.c b/sysdep/unix/sync-if.c deleted file mode 100644 index 3dfa4f0..0000000 --- a/sysdep/unix/sync-if.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * BIRD -- Unix Interface Scanning and Syncing - * - * (c) 1998--1999 Martin Mares <mj@ucw.cz> - * - * Can be freely distributed and used under the terms of the GNU GPL. - */ - -#include <string.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <net/if.h> -#include <sys/ioctl.h> -#include <errno.h> - -#define LOCAL_DEBUG - -#include "nest/bird.h" -#include "nest/iface.h" -#include "nest/route.h" -#include "nest/protocol.h" -#include "lib/timer.h" -#include "lib/krt.h" - -#include "unix.h" - -int if_scan_sock; - -static timer *if_scan_timer; - -static void -scan_ifs(struct ifreq *r, int cnt) -{ - struct iface i; - char *err; - unsigned fl; - ip_addr netmask; - int l; - - if_start_update(); - for (cnt /= sizeof(struct ifreq); cnt; cnt--, r++) - { - bzero(&i, sizeof(i)); - DBG("%s\n", r->ifr_ifrn.ifrn_name); - strncpy(i.name, r->ifr_ifrn.ifrn_name, sizeof(i.name) - 1); - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &i.ip, NULL); - if (ipa_nonzero(i.ip)) - { - l = ipa_classify(i.ip); - if (l < 0 || !(l & IADDR_HOST)) - { - log(L_ERR "%s: Invalid interface address", i.name); - i.ip = IPA_NONE; - } - else if ((l & IADDR_SCOPE_MASK) == SCOPE_HOST) - i.flags |= IF_LOOPBACK | IF_IGNORE; - } - - if (ioctl(if_scan_sock, SIOCGIFFLAGS, r) < 0) - { - err = "SIOCGIFFLAGS"; - faulty: - log(L_ERR "%s(%s): %m", err, i.name); - bad: - i.flags = (i.flags & ~IF_LINK_UP) | IF_ADMIN_DOWN; - continue; - } - fl = r->ifr_flags; - if (fl & IFF_UP) - i.flags |= IF_LINK_UP; - - if (ioctl(if_scan_sock, SIOCGIFNETMASK, r) < 0) - { err = "SIOCGIFNETMASK"; goto faulty; } - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &netmask, NULL); - l = ipa_mklen(netmask); - if (l < 0 || l == 31) - { - log(L_ERR "%s: Invalid netmask", i.name); - goto bad; - } - i.pxlen = l; - - if (fl & IFF_POINTOPOINT) - { - i.flags |= IF_UNNUMBERED; - i.pxlen = BITS_PER_IP_ADDRESS; - if (ioctl(if_scan_sock, SIOCGIFDSTADDR, r) < 0) - { err = "SIOCGIFDSTADDR"; goto faulty; } - get_sockaddr((struct sockaddr_in *) &r->ifr_addr, &i.opposite, NULL); - } - if (fl & IFF_LOOPBACK) - i.flags |= IF_LOOPBACK | IF_IGNORE; -#ifndef CONFIG_ALL_MULTICAST - if (fl & IFF_MULTICAST) -#endif - i.flags |= IF_MULTICAST; - - i.prefix = ipa_and(i.ip, ipa_mkmask(i.pxlen)); - if (i.pxlen < 32) - { - i.brd = ipa_or(i.prefix, ipa_not(ipa_mkmask(i.pxlen))); - if (ipa_equal(i.ip, i.prefix) || ipa_equal(i.ip, i.brd)) - { - log(L_ERR "%s: Using network or broadcast address for interface", i.name); - goto bad; - } - if (fl & IFF_BROADCAST) - i.flags |= IF_BROADCAST; - if (i.pxlen < 30) - i.flags |= IF_MULTIACCESS; - else - i.opposite = ipa_opposite(i.ip); - } - else - i.brd = i.opposite; - - if (ioctl(if_scan_sock, SIOCGIFMTU, r) < 0) - { err = "SIOCGIFMTU"; goto faulty; } - i.mtu = r->ifr_mtu; - -#ifdef SIOCGIFINDEX - if (ioctl(if_scan_sock, SIOCGIFINDEX, r) < 0) - DBG("SIOCGIFINDEX failed: %m\n"); - else - i.index = r->ifr_ifindex; -#else - /* FIXME: What else? Guess ifindex (we need it at least for OSPF on unnumbered links)? */ -#endif - - if_update(&i); - } - if_end_update(); -} - -static void -scan_if(timer *t) -{ - struct ifconf ic; - static int last_ifbuf_size = 4*sizeof(struct ifreq); - int res; - struct krt_proto *p = t->data; - - DBG("It's interface scan time...\n"); - for(;;) - { - if (last_ifbuf_size) - { - struct ifreq *r = alloca(last_ifbuf_size); - ic.ifc_ifcu.ifcu_req = r; - ic.ifc_len = last_ifbuf_size; - res = ioctl(if_scan_sock, SIOCGIFCONF, &ic); - if (res < 0 && errno != EFAULT) - die("SIOCCGIFCONF: %m"); - if (res < last_ifbuf_size) - { - scan_ifs(r, ic.ifc_len); - break; - } - } -#ifdef CLEAN_WAY_WORKING_ONLY_ON_LINUX_2_1 /* FIXME */ - ic.ifc_req = NULL; - ic.ifc_len = 999999999; - if (ioctl(if_scan_sock, SIOCGIFCONF, &ic) < 0) - die("SIOCIFCONF: %m"); - ic.ifc_len += sizeof(struct ifreq); - if (last_ifbuf_size < ic.ifc_len) - { - last_ifbuf_size = ic.ifc_len; - DBG("Increased ifconf buffer size to %d\n", last_ifbuf_size); - } -#else - last_ifbuf_size *= 2; - DBG("Increased ifconf buffer size to %d\n", last_ifbuf_size); -#endif - } - krt_scan_ifaces_done(p); -} - -void -krt_if_start(struct krt_proto *p) -{ - struct krt_config *c = (struct krt_config *) p->p.cf; - - if_scan_timer = tm_new(p->p.pool); - if_scan_timer->hook = scan_if; - if_scan_timer->data = p; - if_scan_timer->recurrent = c->ifopt.scan_time; - scan_if(if_scan_timer); - tm_start(if_scan_timer, c->ifopt.scan_time); -} - -void -krt_if_preconfig(struct krt_config *c) -{ - c->ifopt.scan_time = 60; -} - -void -krt_if_shutdown(struct krt_proto *p) -{ - tm_stop(if_scan_timer); - /* FIXME: What should we do with interfaces? */ -} - -void -scan_if_init(void) -{ - if_scan_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); - DBG("Using socket %d for interface and route scanning\n", if_scan_sock); - if (if_scan_sock < 0) - die("Cannot create scanning socket: %m"); -} |