diff options
Diffstat (limited to 'freebsd/sys/netatalk/at_control.c')
| -rw-r--r-- | freebsd/sys/netatalk/at_control.c | 888 |
1 files changed, 0 insertions, 888 deletions
diff --git a/freebsd/sys/netatalk/at_control.c b/freebsd/sys/netatalk/at_control.c deleted file mode 100644 index 8dfca86a..00000000 --- a/freebsd/sys/netatalk/at_control.c +++ /dev/null @@ -1,888 +0,0 @@ -#include <machine/rtems-bsd-kernel-space.h> - -/*- - * Copyright (c) 1990,1991 Regents of The University of Michigan. - * Copyright (c) 2009 Robert N. M. Watson - * All Rights Reserved. - * - * Permission to use, copy, modify, and distribute this software and - * its documentation for any purpose and without fee is hereby granted, - * provided that the above copyright notice appears in all copies and - * that both that copyright notice and this permission notice appear - * in supporting documentation, and that the name of The University - * of Michigan not be used in advertising or publicity pertaining to - * distribution of the software without specific, written prior - * permission. This software is supplied as is without expressed or - * implied warranties of any kind. - * - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * - * Research Systems Unix Group - * The University of Michigan - * c/o Wesley Craig - * 535 W. William Street - * Ann Arbor, Michigan - * +1-313-764-2278 - * netatalk@umich.edu - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <rtems/bsd/sys/param.h> -#include <sys/systm.h> -#include <sys/sockio.h> -#include <rtems/bsd/sys/lock.h> -#include <sys/malloc.h> -#include <sys/kernel.h> -#include <sys/priv.h> -#include <sys/rwlock.h> -#include <sys/socket.h> -#include <net/if.h> -#include <net/route.h> -#include <netinet/in.h> -#undef s_net -#include <netinet/if_ether.h> - -#include <netatalk/at.h> -#include <netatalk/at_var.h> -#include <netatalk/at_extern.h> - -struct rwlock at_ifaddr_rw; -struct at_ifaddrhead at_ifaddrhead; - -RW_SYSINIT(at_ifaddr_rw, &at_ifaddr_rw, "at_ifaddr_rw"); - -static int aa_dorangeroute(struct ifaddr *ifa, u_int first, u_int last, - int cmd); -static int aa_addsingleroute(struct ifaddr *ifa, struct at_addr *addr, - struct at_addr *mask); -static int aa_delsingleroute(struct ifaddr *ifa, struct at_addr *addr, - struct at_addr *mask); -static int aa_dosingleroute(struct ifaddr *ifa, struct at_addr *addr, - struct at_addr *mask, int cmd, int flags); -static int at_scrub(struct ifnet *ifp, struct at_ifaddr *aa); -static int at_ifinit(struct ifnet *ifp, struct at_ifaddr *aa, - struct sockaddr_at *sat); -static int aa_claim_addr(struct ifaddr *ifa, struct sockaddr *gw); - -#define sateqaddr(a,b) \ - ((a)->sat_len == (b)->sat_len && \ - (a)->sat_family == (b)->sat_family && \ - (a)->sat_addr.s_net == (b)->sat_addr.s_net && \ - (a)->sat_addr.s_node == (b)->sat_addr.s_node) - -int -at_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp, - struct thread *td) -{ - struct ifreq *ifr = (struct ifreq *)data; - struct sockaddr_at *sat; - struct netrange *nr; - struct at_aliasreq *ifra = (struct at_aliasreq *)data; - struct at_ifaddr *aa; - struct ifaddr *ifa; - int error; - - /* - * If we have an ifp, then find the matching at_ifaddr if it exists - */ - aa = NULL; - AT_IFADDR_RLOCK(); - if (ifp != NULL) { - TAILQ_FOREACH(aa, &at_ifaddrhead, aa_link) { - if (aa->aa_ifp == ifp) - break; - } - } - if (aa != NULL) - ifa_ref(&aa->aa_ifa); - AT_IFADDR_RUNLOCK(); - - /* - * In this first switch table we are basically getting ready for - * the second one, by getting the atalk-specific things set up - * so that they start to look more similar to other protocols etc. - */ - error = 0; - switch (cmd) { - case SIOCAIFADDR: - case SIOCDIFADDR: - /* - * If we have an appletalk sockaddr, scan forward of where we - * are now on the at_ifaddr list to find one with a matching - * address on this interface. This may leave aa pointing to - * the first address on the NEXT interface! - */ - if (ifra->ifra_addr.sat_family == AF_APPLETALK) { - struct at_ifaddr *oaa; - - AT_IFADDR_RLOCK(); - for (oaa = aa; aa; aa = TAILQ_NEXT(aa, aa_link)) { - if (aa->aa_ifp == ifp && - sateqaddr(&aa->aa_addr, &ifra->ifra_addr)) - break; - } - if (oaa != NULL && oaa != aa) - ifa_free(&oaa->aa_ifa); - if (aa != NULL && oaa != aa) - ifa_ref(&aa->aa_ifa); - AT_IFADDR_RUNLOCK(); - } - /* - * If we a retrying to delete an addres but didn't find such, - * then rewurn with an error - */ - if (cmd == SIOCDIFADDR && aa == NULL) { - error = EADDRNOTAVAIL; - goto out; - } - /*FALLTHROUGH*/ - - case SIOCSIFADDR: - /* - * If we are not superuser, then we don't get to do these ops. - * - * XXXRW: Layering? - */ - if (priv_check(td, PRIV_NET_ADDIFADDR)) { - error = EPERM; - goto out; - } - - sat = satosat(&ifr->ifr_addr); - nr = (struct netrange *)sat->sat_zero; - if (nr->nr_phase == 1) { - struct at_ifaddr *oaa; - - /* - * Look for a phase 1 address on this interface. - * This may leave aa pointing to the first address on - * the NEXT interface! - */ - AT_IFADDR_RLOCK(); - for (oaa = aa; aa; aa = TAILQ_NEXT(aa, aa_link)) { - if (aa->aa_ifp == ifp && - (aa->aa_flags & AFA_PHASE2) == 0) - break; - } - if (oaa != NULL && oaa != aa) - ifa_free(&oaa->aa_ifa); - if (aa != NULL && oaa != aa) - ifa_ref(&aa->aa_ifa); - AT_IFADDR_RUNLOCK(); - } else { /* default to phase 2 */ - struct at_ifaddr *oaa; - - /* - * Look for a phase 2 address on this interface. - * This may leave aa pointing to the first address on - * the NEXT interface! - */ - AT_IFADDR_RLOCK(); - for (oaa = aa; aa; aa = TAILQ_NEXT(aa, aa_link)) { - if (aa->aa_ifp == ifp && (aa->aa_flags & - AFA_PHASE2)) - break; - } - if (oaa != NULL && oaa != aa) - ifa_free(&oaa->aa_ifa); - if (aa != NULL && oaa != aa) - ifa_ref(&aa->aa_ifa); - AT_IFADDR_RUNLOCK(); - } - - if (ifp == NULL) - panic("at_control"); - - /* - * If we failed to find an existing at_ifaddr entry, then we - * allocate a fresh one. - */ - if (aa == NULL) { - aa = malloc(sizeof(struct at_ifaddr), M_IFADDR, - M_NOWAIT | M_ZERO); - if (aa == NULL) { - error = ENOBUFS; - goto out; - } - callout_init(&aa->aa_callout, CALLOUT_MPSAFE); - - ifa = (struct ifaddr *)aa; - ifa_init(ifa); - - /* - * As the at_ifaddr contains the actual sockaddrs, - * and the ifaddr itself, link them all together - * correctly. - */ - ifa->ifa_addr = (struct sockaddr *)&aa->aa_addr; - ifa->ifa_dstaddr = (struct sockaddr *)&aa->aa_addr; - ifa->ifa_netmask = (struct sockaddr *)&aa->aa_netmask; - - /* - * Set/clear the phase 2 bit. - */ - if (nr->nr_phase == 1) - aa->aa_flags &= ~AFA_PHASE2; - else - aa->aa_flags |= AFA_PHASE2; - - ifa_ref(&aa->aa_ifa); /* at_ifaddrhead */ - AT_IFADDR_WLOCK(); - if (!TAILQ_EMPTY(&at_ifaddrhead)) { - /* - * Don't let the loopback be first, since the - * first address is the machine's default - * address for binding. If it is, stick - * ourself in front, otherwise go to the back - * of the list. - */ - if (TAILQ_FIRST(&at_ifaddrhead)->aa_ifp-> - if_flags & IFF_LOOPBACK) - TAILQ_INSERT_HEAD(&at_ifaddrhead, aa, - aa_link); - else - TAILQ_INSERT_TAIL(&at_ifaddrhead, aa, - aa_link); - } else - TAILQ_INSERT_HEAD(&at_ifaddrhead, aa, - aa_link); - AT_IFADDR_WUNLOCK(); - - /* - * and link it all together - */ - aa->aa_ifp = ifp; - ifa_ref(&aa->aa_ifa); /* if_addrhead */ - IF_ADDR_WLOCK(ifp); - TAILQ_INSERT_TAIL(&ifp->if_addrhead, ifa, ifa_link); - IF_ADDR_WUNLOCK(ifp); - } else { - /* - * If we DID find one then we clobber any routes - * dependent on it.. - */ - at_scrub(ifp, aa); - } - break; - - case SIOCGIFADDR : - sat = satosat(&ifr->ifr_addr); - nr = (struct netrange *)sat->sat_zero; - if (nr->nr_phase == 1) { - struct at_ifaddr *oaa; - - /* - * If the request is specifying phase 1, then - * only look at a phase one address - */ - AT_IFADDR_RLOCK(); - for (oaa = aa; aa; aa = TAILQ_NEXT(aa, aa_link)) { - if (aa->aa_ifp == ifp && - (aa->aa_flags & AFA_PHASE2) == 0) - break; - } - if (oaa != NULL && oaa != aa) - ifa_free(&oaa->aa_ifa); - if (aa != NULL && oaa != aa) - ifa_ref(&aa->aa_ifa); - AT_IFADDR_RUNLOCK(); - } else { - struct at_ifaddr *oaa; - - /* - * default to phase 2 - */ - AT_IFADDR_RLOCK(); - for (oaa = aa; aa; aa = TAILQ_NEXT(aa, aa_link)) { - if (aa->aa_ifp == ifp && (aa->aa_flags & - AFA_PHASE2)) - break; - } - if (oaa != NULL && oaa != aa) - ifa_free(&oaa->aa_ifa); - if (aa != NULL && oaa != aa) - ifa_ref(&aa->aa_ifa); - AT_IFADDR_RUNLOCK(); - } - - if (aa == NULL) { - error = EADDRNOTAVAIL; - goto out; - } - break; - } - - /* - * By the time this switch is run we should be able to assume that - * the "aa" pointer is valid when needed. - */ - switch (cmd) { - case SIOCGIFADDR: - - /* - * copy the contents of the sockaddr blindly. - */ - sat = (struct sockaddr_at *)&ifr->ifr_addr; - *sat = aa->aa_addr; - - /* - * and do some cleanups - */ - ((struct netrange *)&sat->sat_zero)->nr_phase - = (aa->aa_flags & AFA_PHASE2) ? 2 : 1; - ((struct netrange *)&sat->sat_zero)->nr_firstnet = - aa->aa_firstnet; - ((struct netrange *)&sat->sat_zero)->nr_lastnet = - aa->aa_lastnet; - break; - - case SIOCSIFADDR: - error = at_ifinit(ifp, aa, - (struct sockaddr_at *)&ifr->ifr_addr); - goto out; - - case SIOCAIFADDR: - if (sateqaddr(&ifra->ifra_addr, &aa->aa_addr)) { - error = 0; - goto out; - } - error = at_ifinit(ifp, aa, - (struct sockaddr_at *)&ifr->ifr_addr); - goto out; - - case SIOCDIFADDR: - - /* - * remove the ifaddr from the interface - */ - ifa = (struct ifaddr *)aa; - IF_ADDR_WLOCK(ifp); - TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link); - IF_ADDR_WUNLOCK(ifp); - ifa_free(ifa); /* if_addrhead */ - - /* - * Now remove the at_ifaddr from the parallel structure - * as well, or we'd be in deep trouble - */ - - AT_IFADDR_WLOCK(); - TAILQ_REMOVE(&at_ifaddrhead, aa, aa_link); - AT_IFADDR_WUNLOCK(); - ifa_free(ifa); /* at_ifaddrhead */ - break; - - default: - if (ifp == NULL || ifp->if_ioctl == NULL) { - error = EOPNOTSUPP; - goto out; - } - error = ((*ifp->if_ioctl)(ifp, cmd, data)); - } - -out: - if (aa != NULL) - ifa_free(&aa->aa_ifa); - return (error); -} - -/* - * Given an interface and an at_ifaddr (supposedly on that interface) - * remove any routes that depend on this. - * Why ifp is needed I'm not sure, - * as aa->at_ifaddr.ifa_ifp should be the same. - */ -static int -at_scrub(struct ifnet *ifp, struct at_ifaddr *aa) -{ - int error; - - if (aa->aa_flags & AFA_ROUTE) { - if (ifp->if_flags & IFF_LOOPBACK) { - if ((error = aa_delsingleroute(&aa->aa_ifa, - &aa->aa_addr.sat_addr, &aa->aa_netmask.sat_addr)) - != 0) - return (error); - } else if (ifp->if_flags & IFF_POINTOPOINT) { - if ((error = rtinit(&aa->aa_ifa, RTM_DELETE, - RTF_HOST)) != 0) - return (error); - } else if (ifp->if_flags & IFF_BROADCAST) { - error = aa_dorangeroute(&aa->aa_ifa, - ntohs(aa->aa_firstnet), ntohs(aa->aa_lastnet), - RTM_DELETE); - } - aa->aa_ifa.ifa_flags &= ~IFA_ROUTE; - aa->aa_flags &= ~AFA_ROUTE; - } - return (0); -} - -/* - * given an at_ifaddr,a sockaddr_at and an ifp, - * bang them all together at high speed and see what happens - */ -static int -at_ifinit(struct ifnet *ifp, struct at_ifaddr *aa, struct sockaddr_at *sat) -{ - struct netrange nr, onr; - struct sockaddr_at oldaddr; - int error = 0, i, j; - int netinc, nodeinc, nnets; - u_short net; - - /* - * save the old addresses in the at_ifaddr just in case we need them. - */ - oldaddr = aa->aa_addr; - onr.nr_firstnet = aa->aa_firstnet; - onr.nr_lastnet = aa->aa_lastnet; - - /* - * take the address supplied as an argument, and add it to the - * at_ifnet (also given). Remember ing to update - * those parts of the at_ifaddr that need special processing - */ - bzero(AA_SAT(aa), sizeof(struct sockaddr_at)); - bcopy(sat->sat_zero, &nr, sizeof(struct netrange)); - bcopy(sat->sat_zero, AA_SAT(aa)->sat_zero, sizeof(struct netrange)); - nnets = ntohs(nr.nr_lastnet) - ntohs(nr.nr_firstnet) + 1; - aa->aa_firstnet = nr.nr_firstnet; - aa->aa_lastnet = nr.nr_lastnet; - -/* XXX ALC */ -#if 0 - printf("at_ifinit: %s: %u.%u range %u-%u phase %d\n", - ifp->if_name, - ntohs(sat->sat_addr.s_net), sat->sat_addr.s_node, - ntohs(aa->aa_firstnet), ntohs(aa->aa_lastnet), - (aa->aa_flags & AFA_PHASE2) ? 2 : 1); -#endif - - /* - * We could eliminate the need for a second phase 1 probe (post - * autoconf) if we check whether we're resetting the node. Note - * that phase 1 probes use only nodes, not net.node pairs. Under - * phase 2, both the net and node must be the same. - */ - if (ifp->if_flags & IFF_LOOPBACK) { - AA_SAT(aa)->sat_len = sat->sat_len; - AA_SAT(aa)->sat_family = AF_APPLETALK; - AA_SAT(aa)->sat_addr.s_net = sat->sat_addr.s_net; - AA_SAT(aa)->sat_addr.s_node = sat->sat_addr.s_node; -#if 0 - } else if (fp->if_flags & IFF_POINTOPOINT) { - /* unimplemented */ - /* - * we'd have to copy the dstaddr field over from the sat - * but it's not clear that it would contain the right info.. - */ -#endif - } else { - /* - * We are a normal (probably ethernet) interface. - * apply the new address to the interface structures etc. - * We will probe this address on the net first, before - * applying it to ensure that it is free.. If it is not, then - * we will try a number of other randomly generated addresses - * in this net and then increment the net. etc.etc. until - * we find an unused address. - */ - aa->aa_flags |= AFA_PROBING; /* not loopback we Must probe? */ - AA_SAT(aa)->sat_len = sizeof(struct sockaddr_at); - AA_SAT(aa)->sat_family = AF_APPLETALK; - if (aa->aa_flags & AFA_PHASE2) { - if (sat->sat_addr.s_net == ATADDR_ANYNET) { - /* - * If we are phase 2, and the net was not - * specified then we select a random net - * within the supplied netrange. - * XXX use /dev/random? - */ - if (nnets != 1) - net = ntohs(nr.nr_firstnet) + - time_second % (nnets - 1); - else - net = ntohs(nr.nr_firstnet); - } else { - /* - * if a net was supplied, then check that it - * is within the netrange. If it is not then - * replace the old values and return an error - */ - if (ntohs(sat->sat_addr.s_net) < - ntohs(nr.nr_firstnet) || - ntohs(sat->sat_addr.s_net) > - ntohs(nr.nr_lastnet)) { - aa->aa_addr = oldaddr; - aa->aa_firstnet = onr.nr_firstnet; - aa->aa_lastnet = onr.nr_lastnet; - return (EINVAL); - } - /* - * otherwise just use the new net number.. - */ - net = ntohs(sat->sat_addr.s_net); - } - } else { - /* - * we must be phase one, so just use whatever we were - * given. I guess it really isn't going to be - * used... RIGHT? - */ - net = ntohs(sat->sat_addr.s_net); - } - - /* - * set the node part of the address into the ifaddr. - * If it's not specified, be random about it... - * XXX use /dev/random? - */ - if (sat->sat_addr.s_node == ATADDR_ANYNODE) - AA_SAT(aa)->sat_addr.s_node = time_second; - else - AA_SAT(aa)->sat_addr.s_node = sat->sat_addr.s_node; - - /* - * Copy the phase. - */ - AA_SAT(aa)->sat_range.r_netrange.nr_phase = - ((aa->aa_flags & AFA_PHASE2) ? 2:1); - - /* - * step through the nets in the range - * starting at the (possibly random) start point. - */ - for (i = nnets, netinc = 1; i > 0; net = - ntohs(nr.nr_firstnet) + ((net - ntohs(nr.nr_firstnet) + - netinc) % nnets), i--) { - AA_SAT(aa)->sat_addr.s_net = htons(net); - - /* - * using a rather strange stepping method, - * stagger through the possible node addresses - * Once again, starting at the (possibly random) - * initial node address. - */ - for (j = 0, nodeinc = time_second | 1; j < 256; - j++, AA_SAT(aa)->sat_addr.s_node += nodeinc) { - if (AA_SAT(aa)->sat_addr.s_node > 253 || - AA_SAT(aa)->sat_addr.s_node < 1) - continue; - aa->aa_probcnt = 10; - - /* - * start off the probes as an asynchronous - * activity. though why wait 200mSec? - */ - AARPTAB_LOCK(); - callout_reset(&aa->aa_callout, hz / 5, - aarpprobe, ifp); - if (msleep(aa, &aarptab_mtx, PPAUSE|PCATCH, - "at_ifinit", 0)) { - AARPTAB_UNLOCK(); - /* - * theoretically we shouldn't time - * out here so if we returned with an - * error.. - */ - printf("at_ifinit: why did this " - "happen?!\n"); - aa->aa_addr = oldaddr; - aa->aa_firstnet = onr.nr_firstnet; - aa->aa_lastnet = onr.nr_lastnet; - return (EINTR); - } - AARPTAB_UNLOCK(); - - /* - * The async activity should have woken us - * up. We need to see if it was successful - * in finding a free spot, or if we need to - * iterate to the next address to try. - */ - if ((aa->aa_flags & AFA_PROBING) == 0) - break; - } - - /* - * of course we need to break out through two loops... - */ - if ((aa->aa_flags & AFA_PROBING) == 0) - break; - /* reset node for next network */ - AA_SAT(aa)->sat_addr.s_node = time_second; - } - - /* - * if we are still trying to probe, then we have finished all - * the possible addresses, so we need to give up - */ - if (aa->aa_flags & AFA_PROBING) { - aa->aa_addr = oldaddr; - aa->aa_firstnet = onr.nr_firstnet; - aa->aa_lastnet = onr.nr_lastnet; - return (EADDRINUSE); - } - } - - /* - * Now that we have selected an address, we need to tell the interface - * about it, just in case it needs to adjust something. - */ - if (ifp->if_ioctl != NULL && - (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (caddr_t)aa))) { - /* - * of course this could mean that it objects violently - * so if it does, we back out again.. - */ - aa->aa_addr = oldaddr; - aa->aa_firstnet = onr.nr_firstnet; - aa->aa_lastnet = onr.nr_lastnet; - return (error); - } - - /* - * set up the netmask part of the at_ifaddr - * and point the appropriate pointer in the ifaddr to it. - * probably pointless, but what the heck.. XXX - */ - bzero(&aa->aa_netmask, sizeof(aa->aa_netmask)); - aa->aa_netmask.sat_len = sizeof(struct sockaddr_at); - aa->aa_netmask.sat_family = AF_APPLETALK; - aa->aa_netmask.sat_addr.s_net = 0xffff; - aa->aa_netmask.sat_addr.s_node = 0; - aa->aa_ifa.ifa_netmask =(struct sockaddr *) &(aa->aa_netmask); /* XXX */ - - /* - * Initialize broadcast (or remote p2p) address - */ - bzero(&aa->aa_broadaddr, sizeof(aa->aa_broadaddr)); - aa->aa_broadaddr.sat_len = sizeof(struct sockaddr_at); - aa->aa_broadaddr.sat_family = AF_APPLETALK; - - aa->aa_ifa.ifa_metric = ifp->if_metric; - if (ifp->if_flags & IFF_BROADCAST) { - aa->aa_broadaddr.sat_addr.s_net = htons(0); - aa->aa_broadaddr.sat_addr.s_node = 0xff; - aa->aa_ifa.ifa_broadaddr = (struct sockaddr *) - &aa->aa_broadaddr; - /* add the range of routes needed */ - error = aa_dorangeroute(&aa->aa_ifa, ntohs(aa->aa_firstnet), - ntohs(aa->aa_lastnet), RTM_ADD); - } else if (ifp->if_flags & IFF_POINTOPOINT) { - struct at_addr rtaddr, rtmask; - - bzero(&rtaddr, sizeof(rtaddr)); - bzero(&rtmask, sizeof(rtmask)); - /* fill in the far end if we know it here XXX */ - aa->aa_ifa.ifa_dstaddr = (struct sockaddr *) &aa->aa_dstaddr; - error = aa_addsingleroute(&aa->aa_ifa, &rtaddr, &rtmask); - } else if (ifp->if_flags & IFF_LOOPBACK) { - struct at_addr rtaddr, rtmask; - - bzero(&rtaddr, sizeof(rtaddr)); - bzero(&rtmask, sizeof(rtmask)); - rtaddr.s_net = AA_SAT(aa)->sat_addr.s_net; - rtaddr.s_node = AA_SAT(aa)->sat_addr.s_node; - rtmask.s_net = 0xffff; - /* XXX should not be so.. should be HOST route */ - rtmask.s_node = 0x0; - error = aa_addsingleroute(&aa->aa_ifa, &rtaddr, &rtmask); - } - - /* - * set the address of our "check if this addr is ours" routine. - */ - aa->aa_ifa.ifa_claim_addr = aa_claim_addr; - - /* - * of course if we can't add these routes we back out, but it's - * getting risky by now XXX - */ - if (error) { - at_scrub(ifp, aa); - aa->aa_addr = oldaddr; - aa->aa_firstnet = onr.nr_firstnet; - aa->aa_lastnet = onr.nr_lastnet; - return (error); - } - - /* - * note that the address has a route associated with it.... - */ - aa->aa_ifa.ifa_flags |= IFA_ROUTE; - aa->aa_flags |= AFA_ROUTE; - return (0); -} - -/* - * check whether a given address is a broadcast address for us.. - */ -int -at_broadcast(struct sockaddr_at *sat) -{ - struct at_ifaddr *aa; - - AT_IFADDR_LOCK_ASSERT(); - - /* - * If the node is not right, it can't be a broadcast - */ - if (sat->sat_addr.s_node != ATADDR_BCAST) - return (0); - - /* - * If the node was right then if the net is right, it's a broadcast - */ - if (sat->sat_addr.s_net == ATADDR_ANYNET) - return (1); - - /* - * failing that, if the net is one we have, it's a broadcast as well. - */ - TAILQ_FOREACH(aa, &at_ifaddrhead, aa_link) { - if ((aa->aa_ifp->if_flags & IFF_BROADCAST) - && (ntohs(sat->sat_addr.s_net) >= ntohs(aa->aa_firstnet) - && ntohs(sat->sat_addr.s_net) <= ntohs(aa->aa_lastnet))) - return (1); - } - return (0); -} - -/* - * aa_dorangeroute() - * - * Add a route for a range of networks from bot to top - 1. - * Algorithm: - * - * Split the range into two subranges such that the middle - * of the two ranges is the point where the highest bit of difference - * between the two addresses makes its transition. - * Each of the upper and lower ranges might not exist, or might be - * representable by 1 or more netmasks. In addition, if both - * ranges can be represented by the same netmask, then they can be merged - * by using the next higher netmask.. - */ - -static int -aa_dorangeroute(struct ifaddr *ifa, u_int bot, u_int top, int cmd) -{ - u_int mask1; - struct at_addr addr; - struct at_addr mask; - int error; - - /* - * slight sanity check - */ - if (bot > top) return (EINVAL); - - addr.s_node = 0; - mask.s_node = 0; - /* - * just start out with the lowest boundary - * and keep extending the mask till it's too big. - */ - - while (bot <= top) { - mask1 = 1; - while (((bot & ~mask1) >= bot) && ((bot | mask1) <= top)) { - mask1 <<= 1; - mask1 |= 1; - } - mask1 >>= 1; - mask.s_net = htons(~mask1); - addr.s_net = htons(bot); - if (cmd == RTM_ADD) { - error = aa_addsingleroute(ifa,&addr,&mask); - if (error) { - /* XXX clean up? */ - return (error); - } - } else - error = aa_delsingleroute(ifa,&addr,&mask); - bot = (bot | mask1) + 1; - } - return (0); -} - -static int -aa_addsingleroute(struct ifaddr *ifa, struct at_addr *addr, - struct at_addr *mask) -{ - -#if 0 - printf("aa_addsingleroute: %x.%x mask %x.%x ...\n", - ntohs(addr->s_net), addr->s_node, ntohs(mask->s_net), - mask->s_node); -#endif - - return (aa_dosingleroute(ifa, addr, mask, RTM_ADD, RTF_UP)); -} - -static int -aa_delsingleroute(struct ifaddr *ifa, struct at_addr *addr, - struct at_addr *mask) -{ - - return (aa_dosingleroute(ifa, addr, mask, RTM_DELETE, 0)); -} - -static int -aa_dosingleroute(struct ifaddr *ifa, struct at_addr *at_addr, - struct at_addr *at_mask, int cmd, int flags) -{ - struct sockaddr_at addr, mask; - - bzero(&addr, sizeof(addr)); - bzero(&mask, sizeof(mask)); - addr.sat_family = AF_APPLETALK; - addr.sat_len = sizeof(struct sockaddr_at); - addr.sat_addr.s_net = at_addr->s_net; - addr.sat_addr.s_node = at_addr->s_node; - mask.sat_family = AF_APPLETALK; - mask.sat_len = sizeof(struct sockaddr_at); - mask.sat_addr.s_net = at_mask->s_net; - mask.sat_addr.s_node = at_mask->s_node; - if (at_mask->s_node) - flags |= RTF_HOST; - return (rtrequest(cmd, (struct sockaddr *) &addr, - (flags & RTF_HOST)?(ifa->ifa_dstaddr):(ifa->ifa_addr), - (struct sockaddr *) &mask, flags, NULL)); -} - -static int -aa_claim_addr(struct ifaddr *ifa, struct sockaddr *gw0) -{ - struct sockaddr_at *addr = (struct sockaddr_at *)ifa->ifa_addr; - struct sockaddr_at *gw = (struct sockaddr_at *)gw0; - - switch (gw->sat_range.r_netrange.nr_phase) { - case 1: - if(addr->sat_range.r_netrange.nr_phase == 1) - return (1); - - case 0: - case 2: - /* - * if it's our net (including 0), - * or netranges are valid, and we are in the range, - * then it's ours. - */ - if ((addr->sat_addr.s_net == gw->sat_addr.s_net) - || ((addr->sat_range.r_netrange.nr_lastnet) - && (ntohs(gw->sat_addr.s_net) >= - ntohs(addr->sat_range.r_netrange.nr_firstnet)) - && (ntohs(gw->sat_addr.s_net) <= - ntohs(addr->sat_range.r_netrange.nr_lastnet)))) - return (1); - break; - default: - printf("atalk: bad phase\n"); - } - return (0); -} |