383 lines
8.6 KiB
C
383 lines
8.6 KiB
C
/*-
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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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* $FreeBSD$
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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 "opt_inet.h"
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#if 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_dl.h>
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#include <net/bpf.h>
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#if defined(__FreeBSD__)
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#endif
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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 <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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#if defined(__FreeBSD__)
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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 (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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if (sc->sc_if.if_flags & IFF_ALLMULTI) {
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sc->sc_pdq->pdq_flags |= PDQ_ALLMULTI;
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} else {
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sc->sc_pdq->pdq_flags &= ~PDQ_ALLMULTI;
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}
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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_softc_t *) ((caddr_t) ifp - offsetof(pdq_softc_t, sc_ac.ac_if));
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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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{
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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 (sc->sc_bpf != NULL)
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PDQ_BPF_MTAP(sc, m);
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if ((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 (sc->sc_bpf != NULL)
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PDQ_BPF_MTAP(sc, m);
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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 ifmultiaddr *ifma;
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for (ifma = sc->sc_if.if_multiaddrs.lh_first; ifma && num_addrs > 0;
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ifma = ifma->ifma_link.le_next) {
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char *mcaddr;
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if (ifma->ifma_addr->sa_family != AF_LINK)
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continue;
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mcaddr = LLADDR((struct sockaddr_dl *)ifma->ifma_addr);
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((u_short *) addr->lanaddr_bytes)[0] = ((u_short *) mcaddr)[0];
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((u_short *) addr->lanaddr_bytes)[1] = ((u_short *) mcaddr)[1];
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((u_short *) addr->lanaddr_bytes)[2] = ((u_short *) mcaddr)[2];
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addr++;
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num_addrs--;
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}
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}
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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_softc_t *) ((caddr_t) ifp - offsetof(pdq_softc_t, sc_ac.ac_if));
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int s, error = 0;
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s = splimp();
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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;
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switch(ifa->ifa_addr->sa_family) {
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#if defined(INET)
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case AF_INET: {
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pdq_ifinit(sc);
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arp_ifinit(&sc->sc_ac, ifa);
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break;
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}
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#endif /* INET */
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#if defined(NS)
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/* This magic copied from if_is.c; I don't use XNS,
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* so I have no way of telling if this actually
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* works or not.
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*/
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case AF_NS: {
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struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
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if (ns_nullhost(*ina)) {
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ina->x_host = *(union ns_host *)(sc->sc_ac.ac_enaddr);
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} else {
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ifp->if_flags &= ~IFF_RUNNING;
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bcopy((caddr_t)ina->x_host.c_host,
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(caddr_t)sc->sc_ac.ac_enaddr,
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sizeof sc->sc_ac.ac_enaddr);
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}
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pdq_ifinit(sc);
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break;
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}
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#endif /* NS */
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default: {
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pdq_ifinit(sc);
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break;
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}
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}
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break;
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}
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case SIOCGIFADDR: {
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struct ifreq *ifr = (struct ifreq *)data;
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bcopy((caddr_t) sc->sc_ac.ac_enaddr,
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(caddr_t) ((struct sockaddr *)&ifr->ifr_data)->sa_data,
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6);
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break;
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}
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case SIOCSIFFLAGS: {
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pdq_ifinit(sc);
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break;
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}
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case SIOCADDMULTI:
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case SIOCDELMULTI:
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/*
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* Update multicast listeners
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*/
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if (sc->sc_if.if_flags & IFF_RUNNING)
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pdq_run(sc->sc_pdq);
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error = 0;
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break;
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#if defined(SIOCSIFMTU)
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#if !defined(ifr_mtu)
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#define ifr_mtu ifr_metric
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#endif
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case SIOCSIFMTU: {
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struct ifreq *ifr = (struct ifreq *)data;
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/*
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* Set the interface MTU.
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*/
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if (ifr->ifr_mtu > FDDIMTU) {
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error = EINVAL;
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break;
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}
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ifp->if_mtu = ifr->ifr_mtu;
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break;
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}
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#endif /* SIOCSIFMTU */
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default: {
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error = EINVAL;
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break;
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}
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}
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splx(s);
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return error;
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}
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#ifndef IFF_NOTRAILERS
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#define IFF_NOTRAILERS 0
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#endif
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void
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pdq_ifattach(
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pdq_softc_t *sc,
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ifnet_ret_t (*ifwatchdog)(int unit))
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{
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struct ifnet *ifp = &sc->sc_if;
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ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
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#if (defined(__FreeBSD__) && BSD >= 199506) || defined(__NetBSD__)
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ifp->if_watchdog = pdq_ifwatchdog;
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#else
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ifp->if_watchdog = ifwatchdog;
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#endif
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ifp->if_ioctl = pdq_ifioctl;
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ifp->if_output = fddi_output;
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ifp->if_start = pdq_ifstart;
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ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
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#warning "Implement fddi_resolvemulti!"
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/* ifp->if_resolvemulti = ether_resolvemulti; XXX */
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if_attach(ifp);
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fddi_ifattach(ifp);
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PDQ_BPFATTACH(sc, DLT_FDDI, sizeof(struct fddi_header));
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}
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