531 lines
12 KiB
C
531 lines
12 KiB
C
/* $NetBSD: pdq_ifsubr.c,v 1.12 1998/04/07 13:32:07 matt Exp $ */
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/*-
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* Copyright (c) 1995, 1996 Matt Thomas <matt@3am-software.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Id: pdq_ifsubr.c,v 1.12 1997/06/05 01:56:35 thomas Exp
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*
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*/
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/*
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* DEC PDQ FDDI Controller; code for BSD derived operating systems
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*
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* This module provide bus independent BSD specific O/S functions.
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* (ie. it provides an ifnet interface to the rest of the system)
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/malloc.h>
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#if defined(__FreeBSD__) && BSD < 199401
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#include <sys/devconf.h>
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#elif defined(__bsdi__) || defined(__NetBSD__)
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#include <sys/device.h>
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#endif
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_dl.h>
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#if !defined(__NetBSD__)
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#include <net/route.h>
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#endif
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#include "bpfilter.h"
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#if NBPFILTER > 0
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#include <net/bpf.h>
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#include <net/bpfdesc.h>
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#endif
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#if defined(__NetBSD__)
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#include <netinet/if_inarp.h>
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#endif
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#endif
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#if defined(__FreeBSD__)
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#include <netinet/if_ether.h>
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#include <netinet/if_fddi.h>
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#else
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#include <net/if_fddi.h>
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#endif
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#if defined(__bsdi__)
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#include <netinet/if_ether.h>
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#include <i386/isa/isavar.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <vm/vm_param.h>
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#if defined(__FreeBSD__)
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/*
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* Yet another specific ifdef for FreeBSD as it diverges...
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*/
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#include <dev/pdq/pdqvar.h>
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#include <dev/pdq/pdqreg.h>
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#else
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#include "pdqvar.h"
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#include "pdqreg.h"
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#endif
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#if defined(__bsdi__) && _BSDI_VERSION < 199506 /* XXX */
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static void
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arp_ifinit(
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struct arpcom *ac,
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struct ifaddr *ifa)
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{
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sc->sc_ac.ac_ipaddr = IA_SIN(ifa)->sin_addr;
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arpwhohas(&sc->sc_ac, &IA_SIN(ifa)->sin_addr);
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#if _BSDI_VERSION >= 199401
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ifa->ifa_rtrequest = arp_rtrequest;
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ifa->ifa_flags |= RTF_CLONING;
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#endif
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#endif
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void
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pdq_ifinit(
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pdq_softc_t *sc)
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{
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if (sc->sc_if.if_flags & IFF_UP) {
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sc->sc_if.if_flags |= IFF_RUNNING;
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#if NBPFILTER > 0
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if (sc->sc_if.if_flags & IFF_PROMISC) {
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sc->sc_pdq->pdq_flags |= PDQ_PROMISC;
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} else {
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sc->sc_pdq->pdq_flags &= ~PDQ_PROMISC;
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}
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#endif
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if (sc->sc_if.if_flags & IFF_LINK1) {
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sc->sc_pdq->pdq_flags |= PDQ_PASS_SMT;
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} else {
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sc->sc_pdq->pdq_flags &= ~PDQ_PASS_SMT;
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}
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sc->sc_pdq->pdq_flags |= PDQ_RUNNING;
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pdq_run(sc->sc_pdq);
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} else {
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sc->sc_if.if_flags &= ~IFF_RUNNING;
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sc->sc_pdq->pdq_flags &= ~PDQ_RUNNING;
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pdq_stop(sc->sc_pdq);
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}
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}
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void
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pdq_ifwatchdog(
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struct ifnet *ifp)
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{
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/*
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* No progress was made on the transmit queue for PDQ_OS_TX_TRANSMIT
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* seconds. Remove all queued packets.
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*/
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ifp->if_flags &= ~IFF_OACTIVE;
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ifp->if_timer = 0;
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for (;;) {
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struct mbuf *m;
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IF_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL)
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return;
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m_freem(m);
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}
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}
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ifnet_ret_t
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pdq_ifstart(
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struct ifnet *ifp)
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{
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pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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struct ifqueue *ifq = &ifp->if_snd;
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struct mbuf *m;
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int tx = 0;
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if ((ifp->if_flags & IFF_RUNNING) == 0)
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return;
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if (sc->sc_if.if_timer == 0)
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sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT;
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if ((sc->sc_pdq->pdq_flags & PDQ_TXOK) == 0) {
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sc->sc_if.if_flags |= IFF_OACTIVE;
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return;
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}
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for (;; tx = 1) {
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IF_DEQUEUE(ifq, m);
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if (m == NULL)
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break;
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if (pdq_queue_transmit_data(sc->sc_pdq, m) == PDQ_FALSE) {
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ifp->if_flags |= IFF_OACTIVE;
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IF_PREPEND(ifq, m);
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break;
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}
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}
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if (tx)
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PDQ_DO_TYPE2_PRODUCER(sc->sc_pdq);
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}
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void
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pdq_os_receive_pdu(
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pdq_t *pdq,
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struct mbuf *m,
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size_t pktlen,
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int drop)
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{
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pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
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struct fddi_header *fh = mtod(m, struct fddi_header *);
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sc->sc_if.if_ipackets++;
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#if NBPFILTER > 0
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if (sc->sc_bpf != NULL)
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PDQ_BPF_MTAP(sc, m);
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#endif
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if (drop || (fh->fddi_fc & (FDDIFC_L|FDDIFC_F)) != FDDIFC_LLC_ASYNC) {
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m_freem(m);
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return;
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}
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m->m_data += sizeof(struct fddi_header);
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m->m_len -= sizeof(struct fddi_header);
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m->m_pkthdr.len = pktlen - sizeof(struct fddi_header);
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m->m_pkthdr.rcvif = &sc->sc_if;
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fddi_input(&sc->sc_if, fh, m);
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}
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void
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pdq_os_restart_transmitter(
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pdq_t *pdq)
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{
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pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
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sc->sc_if.if_flags &= ~IFF_OACTIVE;
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if (sc->sc_if.if_snd.ifq_head != NULL) {
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sc->sc_if.if_timer = PDQ_OS_TX_TIMEOUT;
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pdq_ifstart(&sc->sc_if);
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} else {
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sc->sc_if.if_timer = 0;
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}
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}
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void
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pdq_os_transmit_done(
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pdq_t *pdq,
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struct mbuf *m)
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{
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pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
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#if NBPFILTER > 0
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if (sc->sc_bpf != NULL)
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PDQ_BPF_MTAP(sc, m);
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#endif
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m_freem(m);
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sc->sc_if.if_opackets++;
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}
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void
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pdq_os_addr_fill(
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pdq_t *pdq,
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pdq_lanaddr_t *addr,
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size_t num_addrs)
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{
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pdq_softc_t *sc = (pdq_softc_t *) pdq->pdq_os_ctx;
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struct ether_multistep step;
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struct ether_multi *enm;
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/*
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* ADDR_FILTER_SET is always issued before FILTER_SET so
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* we can play with PDQ_ALLMULTI and not worry about
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* queueing a FILTER_SET ourselves.
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*/
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pdq->pdq_flags &= ~PDQ_ALLMULTI;
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#if defined(IFF_ALLMULTI)
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sc->sc_if.if_flags &= ~IFF_ALLMULTI;
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#endif
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ETHER_FIRST_MULTI(step, PDQ_FDDICOM(sc), enm);
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while (enm != NULL && num_addrs > 0) {
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if (bcmp(enm->enm_addrlo, enm->enm_addrlo, 6) == 0) {
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((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) enm->enm_addrlo)[0];
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((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) enm->enm_addrlo)[1];
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((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) enm->enm_addrlo)[2];
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addr++;
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num_addrs--;
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} else {
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pdq->pdq_flags |= PDQ_ALLMULTI;
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#if defined(IFF_ALLMULTI)
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sc->sc_if.if_flags |= IFF_ALLMULTI;
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#endif
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}
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ETHER_NEXT_MULTI(step, enm);
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}
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/*
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* If not all the address fit into the CAM, turn on all-multicast mode.
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*/
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if (enm != NULL) {
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pdq->pdq_flags |= PDQ_ALLMULTI;
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#if defined(IFF_ALLMULTI)
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sc->sc_if.if_flags |= IFF_ALLMULTI;
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#endif
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}
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}
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#if defined(IFM_FDDI)
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static int
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pdq_ifmedia_change(
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struct ifnet *ifp)
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{
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pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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if (sc->sc_ifmedia.ifm_media & IFM_FDX) {
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if ((sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) == 0) {
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sc->sc_pdq->pdq_flags |= PDQ_WANT_FDX;
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if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
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pdq_run(sc->sc_pdq);
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}
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} else if (sc->sc_pdq->pdq_flags & PDQ_WANT_FDX) {
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sc->sc_pdq->pdq_flags &= ~PDQ_WANT_FDX;
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if (sc->sc_pdq->pdq_flags & PDQ_RUNNING)
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pdq_run(sc->sc_pdq);
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}
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return 0;
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}
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static void
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pdq_ifmedia_status(
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struct ifnet *ifp,
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struct ifmediareq *ifmr)
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{
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pdq_softc_t * const sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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ifmr->ifm_status = IFM_AVALID;
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if (sc->sc_pdq->pdq_flags & PDQ_IS_ONRING)
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ifmr->ifm_status |= IFM_ACTIVE;
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ifmr->ifm_active = (ifmr->ifm_current & ~IFM_FDX);
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if (sc->sc_pdq->pdq_flags & PDQ_IS_FDX)
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ifmr->ifm_active |= IFM_FDX;
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}
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void
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pdq_os_update_status(
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pdq_t *pdq,
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const void *arg)
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{
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pdq_softc_t * const sc = (pdq_softc_t *) pdq->pdq_os_ctx;
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const pdq_response_status_chars_get_t *rsp = arg;
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int media = 0;
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switch (rsp->status_chars_get.pmd_type[0]) {
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case PDQ_PMD_TYPE_ANSI_MUTLI_MODE: media = IFM_FDDI_MMF; break;
|
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case PDQ_PMD_TYPE_ANSI_SINGLE_MODE_TYPE_1: media = IFM_FDDI_SMF; break;
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case PDQ_PMD_TYPE_ANSI_SIGNLE_MODE_TYPE_2: media = IFM_FDDI_SMF; break;
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case PDQ_PMD_TYPE_UNSHIELDED_TWISTED_PAIR: media = IFM_FDDI_UTP; break;
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default: media |= IFM_MANUAL;
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}
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if (rsp->status_chars_get.station_type == PDQ_STATION_TYPE_DAS)
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media |= IFM_FDDI_DA;
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sc->sc_ifmedia.ifm_media = media | IFM_FDDI;
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}
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#endif /* defined(IFM_FDDI) */
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int
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pdq_ifioctl(
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struct ifnet *ifp,
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ioctl_cmd_t cmd,
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caddr_t data)
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{
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pdq_softc_t *sc = PDQ_OS_IFP_TO_SOFTC(ifp);
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int s, error = 0;
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s = splimp();
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|
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switch (cmd) {
|
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case SIOCSIFADDR: {
|
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struct ifaddr *ifa = (struct ifaddr *)data;
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||
|
||
ifp->if_flags |= IFF_UP;
|
||
switch(ifa->ifa_addr->sa_family) {
|
||
#if defined(INET)
|
||
case AF_INET: {
|
||
pdq_ifinit(sc);
|
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PDQ_ARP_IFINIT(sc, ifa);
|
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break;
|
||
}
|
||
#endif /* INET */
|
||
|
||
#if defined(NS)
|
||
/* This magic copied from if_is.c; I don't use XNS,
|
||
* so I have no way of telling if this actually
|
||
* works or not.
|
||
*/
|
||
case AF_NS: {
|
||
struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
|
||
if (ns_nullhost(*ina)) {
|
||
ina->x_host = *(union ns_host *)PDQ_LANADDR(sc);
|
||
} else {
|
||
ifp->if_flags &= ~IFF_RUNNING;
|
||
bcopy((caddr_t)ina->x_host.c_host,
|
||
(caddr_t)PDQ_LANADDR(sc),
|
||
PDQ_LANADDR_SIZE(sc));
|
||
}
|
||
|
||
pdq_ifinit(sc);
|
||
break;
|
||
}
|
||
#endif /* NS */
|
||
|
||
default: {
|
||
pdq_ifinit(sc);
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
case SIOCGIFADDR: {
|
||
struct ifreq *ifr = (struct ifreq *)data;
|
||
bcopy((caddr_t) PDQ_LANADDR(sc),
|
||
(caddr_t) ((struct sockaddr *)&ifr->ifr_data)->sa_data,
|
||
6);
|
||
break;
|
||
}
|
||
|
||
case SIOCSIFFLAGS: {
|
||
pdq_ifinit(sc);
|
||
break;
|
||
}
|
||
|
||
case SIOCADDMULTI:
|
||
case SIOCDELMULTI: {
|
||
/*
|
||
* Update multicast listeners
|
||
*/
|
||
if (cmd == SIOCADDMULTI)
|
||
error = ether_addmulti((struct ifreq *)data, PDQ_FDDICOM(sc));
|
||
else
|
||
error = ether_delmulti((struct ifreq *)data, PDQ_FDDICOM(sc));
|
||
|
||
if (error == ENETRESET) {
|
||
if (sc->sc_if.if_flags & IFF_RUNNING)
|
||
pdq_run(sc->sc_pdq);
|
||
error = 0;
|
||
}
|
||
break;
|
||
}
|
||
|
||
#if defined(SIOCSIFMTU)
|
||
#if !defined(ifr_mtu)
|
||
#define ifr_mtu ifr_metric
|
||
#endif
|
||
case SIOCSIFMTU: {
|
||
struct ifreq *ifr = (struct ifreq *)data;
|
||
/*
|
||
* Set the interface MTU.
|
||
*/
|
||
if (ifr->ifr_mtu > FDDIMTU) {
|
||
error = EINVAL;
|
||
break;
|
||
}
|
||
ifp->if_mtu = ifr->ifr_mtu;
|
||
break;
|
||
}
|
||
#endif /* SIOCSIFMTU */
|
||
|
||
#if defined(IFM_FDDI) && defined(SIOCSIFMEDIA)
|
||
case SIOCSIFMEDIA:
|
||
case SIOCGIFMEDIA: {
|
||
struct ifreq *ifr = (struct ifreq *)data;
|
||
error = ifmedia_ioctl(ifp, ifr, &sc->sc_ifmedia, cmd);
|
||
break;
|
||
}
|
||
#endif
|
||
|
||
default: {
|
||
error = EINVAL;
|
||
break;
|
||
}
|
||
}
|
||
|
||
splx(s);
|
||
return error;
|
||
}
|
||
|
||
#ifndef IFF_NOTRAILERS
|
||
#define IFF_NOTRAILERS 0
|
||
#endif
|
||
|
||
void
|
||
pdq_ifattach(
|
||
pdq_softc_t *sc,
|
||
ifnet_ret_t (*ifwatchdog)(int unit))
|
||
{
|
||
struct ifnet *ifp = &sc->sc_if;
|
||
|
||
ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
|
||
|
||
#if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__)
|
||
ifp->if_watchdog = pdq_ifwatchdog;
|
||
#else
|
||
ifp->if_watchdog = ifwatchdog;
|
||
#endif
|
||
|
||
ifp->if_ioctl = pdq_ifioctl;
|
||
ifp->if_output = fddi_output;
|
||
ifp->if_start = pdq_ifstart;
|
||
|
||
#if defined(IFM_FDDI)
|
||
{
|
||
const int media = sc->sc_ifmedia.ifm_media;
|
||
ifmedia_init(&sc->sc_ifmedia, IFM_FDX,
|
||
pdq_ifmedia_change, pdq_ifmedia_status);
|
||
ifmedia_add(&sc->sc_ifmedia, media, 0, 0);
|
||
ifmedia_set(&sc->sc_ifmedia, media);
|
||
}
|
||
#endif
|
||
|
||
if_attach(ifp);
|
||
#if defined(__NetBSD__)
|
||
fddi_ifattach(ifp, (caddr_t)&sc->sc_pdq->pdq_hwaddr);
|
||
#else
|
||
fddi_ifattach(ifp);
|
||
#endif
|
||
#if NBPFILTER > 0
|
||
PDQ_BPFATTACH(sc, DLT_FDDI, sizeof(struct fddi_header));
|
||
#endif
|
||
}
|