diff options
Diffstat (limited to 'freebsd/sys/net/if_fddisubr.c')
| -rw-r--r-- | freebsd/sys/net/if_fddisubr.c | 669 |
1 files changed, 0 insertions, 669 deletions
diff --git a/freebsd/sys/net/if_fddisubr.c b/freebsd/sys/net/if_fddisubr.c deleted file mode 100644 index c011346e..00000000 --- a/freebsd/sys/net/if_fddisubr.c +++ /dev/null @@ -1,669 +0,0 @@ -#include <machine/rtems-bsd-kernel-space.h> - -/*- - * SPDX-License-Identifier: BSD-4-Clause - * - * Copyright (c) 1995, 1996 - * Matt Thomas <matt@3am-software.com>. All rights reserved. - * Copyright (c) 1982, 1989, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp - * $FreeBSD$ - */ - -#include <rtems/bsd/local/opt_inet.h> -#include <rtems/bsd/local/opt_inet6.h> - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/mbuf.h> -#include <sys/module.h> -#include <sys/socket.h> -#include <sys/sockio.h> - -#include <net/if.h> -#include <net/if_var.h> -#include <net/if_dl.h> -#include <net/if_llc.h> -#include <net/if_types.h> -#include <net/if_llatbl.h> - -#include <net/ethernet.h> -#include <net/netisr.h> -#include <net/route.h> -#include <net/bpf.h> -#include <net/fddi.h> - -#if defined(INET) || defined(INET6) -#include <netinet/in.h> -#include <netinet/in_var.h> -#include <netinet/if_ether.h> -#endif -#ifdef INET6 -#include <netinet6/nd6.h> -#endif - -#ifdef DECNET -#include <netdnet/dn.h> -#endif - -#include <security/mac/mac_framework.h> - -static const u_char fddibroadcastaddr[FDDI_ADDR_LEN] = - { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - -static int fddi_resolvemulti(struct ifnet *, struct sockaddr **, - struct sockaddr *); -static int fddi_output(struct ifnet *, struct mbuf *, const struct sockaddr *, - struct route *); -static void fddi_input(struct ifnet *ifp, struct mbuf *m); - -#define senderr(e) do { error = (e); goto bad; } while (0) - -/* - * FDDI output routine. - * Encapsulate a packet of type family for the local net. - * Use trailer local net encapsulation if enough data in first - * packet leaves a multiple of 512 bytes of data in remainder. - */ -static int -fddi_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, - struct route *ro) -{ - u_int16_t type; - int loop_copy = 0, error = 0, hdrcmplt = 0; - u_char esrc[FDDI_ADDR_LEN], edst[FDDI_ADDR_LEN]; - struct fddi_header *fh; -#if defined(INET) || defined(INET6) - int is_gw = 0; -#endif - -#ifdef MAC - error = mac_ifnet_check_transmit(ifp, m); - if (error) - senderr(error); -#endif - - if (ifp->if_flags & IFF_MONITOR) - senderr(ENETDOWN); - if (!((ifp->if_flags & IFF_UP) && - (ifp->if_drv_flags & IFF_DRV_RUNNING))) - senderr(ENETDOWN); - getmicrotime(&ifp->if_lastchange); - -#if defined(INET) || defined(INET6) - if (ro != NULL) - is_gw = (ro->ro_flags & RT_HAS_GW) != 0; -#endif - - switch (dst->sa_family) { -#ifdef INET - case AF_INET: { - error = arpresolve(ifp, is_gw, m, dst, edst, NULL, NULL); - if (error) - return (error == EWOULDBLOCK ? 0 : error); - type = htons(ETHERTYPE_IP); - break; - } - case AF_ARP: - { - struct arphdr *ah; - ah = mtod(m, struct arphdr *); - ah->ar_hrd = htons(ARPHRD_ETHER); - - loop_copy = -1; /* if this is for us, don't do it */ - - switch (ntohs(ah->ar_op)) { - case ARPOP_REVREQUEST: - case ARPOP_REVREPLY: - type = htons(ETHERTYPE_REVARP); - break; - case ARPOP_REQUEST: - case ARPOP_REPLY: - default: - type = htons(ETHERTYPE_ARP); - break; - } - - if (m->m_flags & M_BCAST) - bcopy(ifp->if_broadcastaddr, edst, FDDI_ADDR_LEN); - else - bcopy(ar_tha(ah), edst, FDDI_ADDR_LEN); - - } - break; -#endif /* INET */ -#ifdef INET6 - case AF_INET6: - error = nd6_resolve(ifp, is_gw, m, dst, edst, NULL, NULL); - if (error) - return (error == EWOULDBLOCK ? 0 : error); - type = htons(ETHERTYPE_IPV6); - break; -#endif /* INET6 */ - case pseudo_AF_HDRCMPLT: - { - const struct ether_header *eh; - - hdrcmplt = 1; - eh = (const struct ether_header *)dst->sa_data; - bcopy(eh->ether_shost, esrc, FDDI_ADDR_LEN); - /* FALLTHROUGH */ - } - - case AF_UNSPEC: - { - const struct ether_header *eh; - - loop_copy = -1; - eh = (const struct ether_header *)dst->sa_data; - bcopy(eh->ether_dhost, edst, FDDI_ADDR_LEN); - if (*edst & 1) - m->m_flags |= (M_BCAST|M_MCAST); - type = eh->ether_type; - break; - } - - case AF_IMPLINK: - { - fh = mtod(m, struct fddi_header *); - error = EPROTONOSUPPORT; - switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { - case FDDIFC_LLC_ASYNC: { - /* legal priorities are 0 through 7 */ - if ((fh->fddi_fc & FDDIFC_Z) > 7) - goto bad; - break; - } - case FDDIFC_LLC_SYNC: { - /* FDDIFC_Z bits reserved, must be zero */ - if (fh->fddi_fc & FDDIFC_Z) - goto bad; - break; - } - case FDDIFC_SMT: { - /* FDDIFC_Z bits must be non zero */ - if ((fh->fddi_fc & FDDIFC_Z) == 0) - goto bad; - break; - } - default: { - /* anything else is too dangerous */ - goto bad; - } - } - error = 0; - if (fh->fddi_dhost[0] & 1) - m->m_flags |= (M_BCAST|M_MCAST); - goto queue_it; - } - default: - if_printf(ifp, "can't handle af%d\n", dst->sa_family); - senderr(EAFNOSUPPORT); - } - - /* - * Add LLC header. - */ - if (type != 0) { - struct llc *l; - M_PREPEND(m, LLC_SNAPFRAMELEN, M_NOWAIT); - if (m == NULL) - senderr(ENOBUFS); - l = mtod(m, struct llc *); - l->llc_control = LLC_UI; - l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; - l->llc_snap.org_code[0] = - l->llc_snap.org_code[1] = - l->llc_snap.org_code[2] = 0; - l->llc_snap.ether_type = htons(type); - } - - /* - * Add local net header. If no space in first mbuf, - * allocate another. - */ - M_PREPEND(m, FDDI_HDR_LEN, M_NOWAIT); - if (m == NULL) - senderr(ENOBUFS); - fh = mtod(m, struct fddi_header *); - fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; - bcopy((caddr_t)edst, (caddr_t)fh->fddi_dhost, FDDI_ADDR_LEN); - queue_it: - if (hdrcmplt) - bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost, FDDI_ADDR_LEN); - else - bcopy(IF_LLADDR(ifp), (caddr_t)fh->fddi_shost, - FDDI_ADDR_LEN); - - /* - * If a simplex interface, and the packet is being sent to our - * Ethernet address or a broadcast address, loopback a copy. - * XXX To make a simplex device behave exactly like a duplex - * device, we should copy in the case of sending to our own - * ethernet address (thus letting the original actually appear - * on the wire). However, we don't do that here for security - * reasons and compatibility with the original behavior. - */ - if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { - if ((m->m_flags & M_BCAST) || (loop_copy > 0)) { - struct mbuf *n; - n = m_copym(m, 0, M_COPYALL, M_NOWAIT); - (void) if_simloop(ifp, n, dst->sa_family, - FDDI_HDR_LEN); - } else if (bcmp(fh->fddi_dhost, fh->fddi_shost, - FDDI_ADDR_LEN) == 0) { - (void) if_simloop(ifp, m, dst->sa_family, - FDDI_HDR_LEN); - return (0); /* XXX */ - } - } - - error = (ifp->if_transmit)(ifp, m); - if (error) - if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); - - return (error); - -bad: - if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); - if (m) - m_freem(m); - return (error); -} - -/* - * Process a received FDDI packet. - */ -static void -fddi_input(ifp, m) - struct ifnet *ifp; - struct mbuf *m; -{ - int isr; - struct llc *l; - struct fddi_header *fh; - - /* - * Do consistency checks to verify assumptions - * made by code past this point. - */ - if ((m->m_flags & M_PKTHDR) == 0) { - if_printf(ifp, "discard frame w/o packet header\n"); - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - m_freem(m); - return; - } - if (m->m_pkthdr.rcvif == NULL) { - if_printf(ifp, "discard frame w/o interface pointer\n"); - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - m_freem(m); - return; - } - - m = m_pullup(m, FDDI_HDR_LEN); - if (m == NULL) { - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - goto dropanyway; - } - fh = mtod(m, struct fddi_header *); - - /* - * Discard packet if interface is not up. - */ - if (!((ifp->if_flags & IFF_UP) && - (ifp->if_drv_flags & IFF_DRV_RUNNING))) - goto dropanyway; - - /* - * Give bpf a chance at the packet. - */ - BPF_MTAP(ifp, m); - - /* - * Interface marked for monitoring; discard packet. - */ - if (ifp->if_flags & IFF_MONITOR) { - m_freem(m); - return; - } - -#ifdef MAC - mac_ifnet_create_mbuf(ifp, m); -#endif - - /* - * Update interface statistics. - */ - if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len); - getmicrotime(&ifp->if_lastchange); - - /* - * Discard non local unicast packets when interface - * is in promiscuous mode. - */ - if ((ifp->if_flags & IFF_PROMISC) && ((fh->fddi_dhost[0] & 1) == 0) && - (bcmp(IF_LLADDR(ifp), (caddr_t)fh->fddi_dhost, - FDDI_ADDR_LEN) != 0)) - goto dropanyway; - - /* - * Set mbuf flags for bcast/mcast. - */ - if (fh->fddi_dhost[0] & 1) { - if (bcmp(ifp->if_broadcastaddr, fh->fddi_dhost, - FDDI_ADDR_LEN) == 0) - m->m_flags |= M_BCAST; - else - m->m_flags |= M_MCAST; - if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1); - } - -#ifdef M_LINK0 - /* - * If this has a LLC priority of 0, then mark it so upper - * layers have a hint that it really came via a FDDI/Ethernet - * bridge. - */ - if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) - m->m_flags |= M_LINK0; -#endif - - /* Strip off FDDI header. */ - m_adj(m, FDDI_HDR_LEN); - - m = m_pullup(m, LLC_SNAPFRAMELEN); - if (m == NULL) { - if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); - goto dropanyway; - } - l = mtod(m, struct llc *); - - switch (l->llc_dsap) { - case LLC_SNAP_LSAP: - { - u_int16_t type; - if ((l->llc_control != LLC_UI) || - (l->llc_ssap != LLC_SNAP_LSAP)) { - if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1); - goto dropanyway; - } - if (l->llc_snap.org_code[0] != 0 || - l->llc_snap.org_code[1] != 0 || - l->llc_snap.org_code[2] != 0) { - if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1); - goto dropanyway; - } - - type = ntohs(l->llc_snap.ether_type); - m_adj(m, LLC_SNAPFRAMELEN); - - switch (type) { -#ifdef INET - case ETHERTYPE_IP: - isr = NETISR_IP; - break; - - case ETHERTYPE_ARP: - if (ifp->if_flags & IFF_NOARP) - goto dropanyway; - isr = NETISR_ARP; - break; -#endif -#ifdef INET6 - case ETHERTYPE_IPV6: - isr = NETISR_IPV6; - break; -#endif -#ifdef DECNET - case ETHERTYPE_DECNET: - isr = NETISR_DECNET; - break; -#endif - default: - /* printf("fddi_input: unknown protocol 0x%x\n", type); */ - if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1); - goto dropanyway; - } - break; - } - - default: - /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */ - if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1); - goto dropanyway; - } - M_SETFIB(m, ifp->if_fib); - netisr_dispatch(isr, m); - return; - -dropanyway: - if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); - if (m) - m_freem(m); - return; -} - -/* - * Perform common duties while attaching to interface list - */ -void -fddi_ifattach(ifp, lla, bpf) - struct ifnet *ifp; - const u_int8_t *lla; - int bpf; -{ - struct ifaddr *ifa; - struct sockaddr_dl *sdl; - - ifp->if_type = IFT_FDDI; - ifp->if_addrlen = FDDI_ADDR_LEN; - ifp->if_hdrlen = 21; - - if_attach(ifp); /* Must be called before additional assignments */ - - ifp->if_mtu = FDDIMTU; - ifp->if_output = fddi_output; - ifp->if_input = fddi_input; - ifp->if_resolvemulti = fddi_resolvemulti; - ifp->if_broadcastaddr = fddibroadcastaddr; - ifp->if_baudrate = 100000000; -#ifdef IFF_NOTRAILERS - ifp->if_flags |= IFF_NOTRAILERS; -#endif - ifa = ifp->if_addr; - KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); - - sdl = (struct sockaddr_dl *)ifa->ifa_addr; - sdl->sdl_type = IFT_FDDI; - sdl->sdl_alen = ifp->if_addrlen; - bcopy(lla, LLADDR(sdl), ifp->if_addrlen); - - if (bpf) - bpfattach(ifp, DLT_FDDI, FDDI_HDR_LEN); - - return; -} - -void -fddi_ifdetach(ifp, bpf) - struct ifnet *ifp; - int bpf; -{ - - if (bpf) - bpfdetach(ifp); - - if_detach(ifp); - - return; -} - -int -fddi_ioctl (ifp, command, data) - struct ifnet *ifp; - u_long command; - caddr_t data; -{ - struct ifaddr *ifa; - struct ifreq *ifr; - int error; - - ifa = (struct ifaddr *) data; - ifr = (struct ifreq *) data; - error = 0; - - switch (command) { - case SIOCSIFADDR: - ifp->if_flags |= IFF_UP; - - switch (ifa->ifa_addr->sa_family) { -#ifdef INET - case AF_INET: /* before arpwhohas */ - ifp->if_init(ifp->if_softc); - arp_ifinit(ifp, ifa); - break; -#endif - default: - ifp->if_init(ifp->if_softc); - break; - } - break; - case SIOCGIFADDR: - bcopy(IF_LLADDR(ifp), &ifr->ifr_addr.sa_data[0], - FDDI_ADDR_LEN); - break; - case SIOCSIFMTU: - /* - * Set the interface MTU. - */ - if (ifr->ifr_mtu > FDDIMTU) { - error = EINVAL; - } else { - ifp->if_mtu = ifr->ifr_mtu; - } - break; - default: - error = EINVAL; - break; - } - - return (error); -} - -static int -fddi_resolvemulti(ifp, llsa, sa) - struct ifnet *ifp; - struct sockaddr **llsa; - struct sockaddr *sa; -{ - struct sockaddr_dl *sdl; -#ifdef INET - struct sockaddr_in *sin; -#endif -#ifdef INET6 - struct sockaddr_in6 *sin6; -#endif - u_char *e_addr; - - switch(sa->sa_family) { - case AF_LINK: - /* - * No mapping needed. Just check that it's a valid MC address. - */ - sdl = (struct sockaddr_dl *)sa; - e_addr = LLADDR(sdl); - if ((e_addr[0] & 1) != 1) - return (EADDRNOTAVAIL); - *llsa = NULL; - return (0); - -#ifdef INET - case AF_INET: - sin = (struct sockaddr_in *)sa; - if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) - return (EADDRNOTAVAIL); - sdl = link_init_sdl(ifp, *llsa, IFT_FDDI); - sdl->sdl_nlen = 0; - sdl->sdl_alen = FDDI_ADDR_LEN; - sdl->sdl_slen = 0; - e_addr = LLADDR(sdl); - ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); - *llsa = (struct sockaddr *)sdl; - return (0); -#endif -#ifdef INET6 - case AF_INET6: - sin6 = (struct sockaddr_in6 *)sa; - if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { - /* - * An IP6 address of 0 means listen to all - * of the Ethernet multicast address used for IP6. - * (This is used for multicast routers.) - */ - ifp->if_flags |= IFF_ALLMULTI; - *llsa = NULL; - return (0); - } - if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) - return (EADDRNOTAVAIL); - sdl = link_init_sdl(ifp, *llsa, IFT_FDDI); - sdl->sdl_nlen = 0; - sdl->sdl_alen = FDDI_ADDR_LEN; - sdl->sdl_slen = 0; - e_addr = LLADDR(sdl); - ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); - *llsa = (struct sockaddr *)sdl; - return (0); -#endif - - default: - /* - * Well, the text isn't quite right, but it's the name - * that counts... - */ - return (EAFNOSUPPORT); - } - - return (0); -} - -static moduledata_t fddi_mod = { - "fddi", /* module name */ - NULL, /* event handler */ - 0 /* extra data */ -}; - -DECLARE_MODULE(fddi, fddi_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); -MODULE_VERSION(fddi, 1); |