More multicast stuff
>From cmaeda@cs.washington.edu These patches are derived from the IP Multicast patches for BSDI.
This commit is contained in:
hpeyerl
parent
a09abb4d2b
commit
dc1b697fb8
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@ -20,7 +20,7 @@
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*/
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/*
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* $Id: if_ed.c,v 1.10 1993/10/23 04:59:41 davidg Exp $
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* $Id: if_ed.c,v 1.11 1993/12/10 05:37:33 hpeyerl Exp $
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*/
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/*
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@ -174,6 +174,7 @@ struct ed_softc {
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int ed_attach(), ed_init(), edintr(), ed_ioctl(), ed_probe(),
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ed_start(), ed_reset(), ed_watchdog();
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void ds_getmcaf();
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static void ed_stop();
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@ -994,6 +995,9 @@ ed_attach(isa_dev)
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| IFF_ALTPHYS);
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else
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ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS);
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#ifdef MULTICAST
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ifp->if_flags |= IFF_MULTICAST;
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#endif
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/*
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* Attach the interface
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@ -1165,10 +1169,16 @@ ed_init(unit)
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outb(sc->nic_addr + ED_P0_RBCR0, 0);
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outb(sc->nic_addr + ED_P0_RBCR1, 0);
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#if 0
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/*
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* Enable reception of broadcast packets
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*/
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outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB);
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#endif
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/*
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* Tell RCR to do nothing for now.
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*/
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outb(sc->nic_addr + ED_P0_RCR, ED_RCR_MON);
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/*
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* Place NIC in internal loopback mode
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@ -1213,15 +1223,24 @@ ed_init(unit)
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for (i = 0; i < ETHER_ADDR_LEN; ++i)
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outb(sc->nic_addr + ED_P1_PAR0 + i, sc->arpcom.ac_enaddr[i]);
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#if NBPFILTER > 0
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/*
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* Initialize multicast address hashing registers to accept
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* all multicasts (only used when in promiscuous mode)
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*/
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for (i = 0; i < 8; ++i)
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outb(sc->nic_addr + ED_P1_MAR0 + i, 0xff);
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#endif
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#ifdef MULTICAST
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/* set up multicast addresses and filter modes */
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if (sc != 0 && (ifp->if_flags & IFF_MULTICAST) != 0) {
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u_long mcaf[2];
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if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
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mcaf[0] = 0xffffffff;
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mcaf[1] = 0xffffffff;
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} else
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ds_getmcaf(sc, mcaf);
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/*
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* Set multicast filter on chip.
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*/
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for (i = 0; i < 8; i++)
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outb(sc->nic_addr + ED_P1_MAR0 + i, ((u_char *)mcaf)[i]);
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}
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#endif
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/*
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* Set Current Page pointer to next_packet (initialized above)
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*/
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@ -1233,6 +1252,11 @@ ed_init(unit)
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*/
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outb(sc->nic_addr + ED_P1_CR, ED_CR_RD2|ED_CR_STA);
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/*
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* Clear all interrupts.
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*/
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outb(sc->nic_addr + ED_P0_ISR, 0xff);
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/*
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* Take interface out of loopback
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*/
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@ -1250,6 +1274,25 @@ ed_init(unit)
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}
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}
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i = ED_RCR_AB;
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if (sc != 0) {
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if ((ifp->if_flags & IFF_PROMISC) != 0) {
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/*
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* Set promiscuous mode.
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* Also reconfigure the multicast filter.
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*/
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int j;
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i |= ED_RCR_PRO|ED_RCR_AM|ED_RCR_AR|ED_RCR_SEP;
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for (j = 0; j < 8; j++)
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outb(sc->nic_addr + ED_P1_MAR0 + j, 0xff);
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}
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#ifdef MULTICAST
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i |= ED_RCR_AM;
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#endif
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}
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outb(sc->nic_addr + ED_P0_RCR, i);
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/*
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* Set 'running' flag, and clear output active flag.
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*/
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@ -1892,41 +1935,32 @@ ed_ioctl(ifp, command, data)
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((ifp->if_flags & IFF_RUNNING) == 0))
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ed_init(ifp->if_unit);
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}
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#if NBPFILTER > 0
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if (ifp->if_flags & IFF_PROMISC) {
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/*
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* Set promiscuous mode on interface.
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* XXX - for multicasts to work, we would need to
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* write 1's in all bits of multicast
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* hashing array. For now we assume that
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* this was done in ed_init().
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*/
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outb(sc->nic_addr + ED_P0_RCR,
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ED_RCR_PRO|ED_RCR_AM|ED_RCR_AB);
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} else {
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/*
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* XXX - for multicasts to work, we would need to
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* rewrite the multicast hashing array with the
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* proper hash (would have been destroyed above).
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*/
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outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB);
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}
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#endif
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/*
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* An unfortunate hack to provide the (required) software control
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* of the tranceiver for 3Com boards. The ALTPHYS flag disables
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* the tranceiver if set.
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* NB: There was a bunch of code here that's now in ed_init.
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*/
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if (sc->vendor == ED_VENDOR_3COM) {
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if (ifp->if_flags & IFF_ALTPHYS) {
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outb(sc->asic_addr + ED_3COM_CR, 0);
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} else {
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outb(sc->asic_addr + ED_3COM_CR, ED_3COM_CR_XSEL);
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}
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}
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break;
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#ifdef MULTICAST
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case SIOCADDMULTI:
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case SIOCDELMULTI:
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/*
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* Update our multicast list.
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*/
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error = (command == SIOCADDMULTI) ?
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ether_addmulti((struct ifreq *)data, &sc->arpcom):
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ether_delmulti((struct ifreq *)data, &sc->arpcom);
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if (error == ENETRESET) {
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/*
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* Multicast list has changed; set the hardware filter
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* accordingly.
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*/
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ed_stop(ifp->if_unit); /* XXX for ds_setmcaf? */
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ed_init(ifp->if_unit);
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error = 0;
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}
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break;
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#endif
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default:
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error = EINVAL;
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}
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@ -2372,4 +2406,64 @@ ed_ring_to_mbuf(sc,src,dst,total_len)
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}
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return (m);
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}
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#ifdef MULTICAST
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/*
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* Compute crc for ethernet address
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*/
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u_long
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ds_crc(ep)
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u_char *ep;
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{
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#define POLYNOMIAL 0x04c11db6
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register u_long crc = 0xffffffffL;
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register int carry, i, j;
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register u_char b;
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for (i = 6; --i >= 0; ) {
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b = *ep++;
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for (j = 8; --j >= 0; ) {
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carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
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crc <<= 1;
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b >>= 1;
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if (carry)
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crc = ((crc ^ POLYNOMIAL) | carry);
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}
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}
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return crc;
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#undef POLYNOMIAL
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}
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/*
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* Compute the multicast address filter from the
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* list of multicast addresses we need to listen to.
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*/
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void
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ds_getmcaf(sc, mcaf)
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struct ed_softc *sc;
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u_long *mcaf;
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{
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register u_int index;
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register u_char *af = (u_char*)mcaf;
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register struct ether_multi *enm;
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register struct ether_multistep step;
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mcaf[0] = 0;
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mcaf[1] = 0;
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ETHER_FIRST_MULTI(step, &sc->arpcom, enm);
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while (enm != NULL) {
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if (bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) {
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mcaf[0] = 0xffffffff;
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mcaf[1] = 0xffffffff;
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return;
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}
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index = ds_crc(enm->enm_addrlo, 6) >> 26;
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af[index >> 3] |= 1 << (index & 7);
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ETHER_NEXT_MULTI(step, enm);
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}
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}
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#endif
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#endif
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@ -20,7 +20,7 @@
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*/
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/*
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* $Id: if_ed.c,v 1.10 1993/10/23 04:59:41 davidg Exp $
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* $Id: if_ed.c,v 1.11 1993/12/10 05:37:33 hpeyerl Exp $
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*/
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/*
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@ -174,6 +174,7 @@ struct ed_softc {
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int ed_attach(), ed_init(), edintr(), ed_ioctl(), ed_probe(),
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ed_start(), ed_reset(), ed_watchdog();
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void ds_getmcaf();
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static void ed_stop();
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@ -994,6 +995,9 @@ ed_attach(isa_dev)
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| IFF_ALTPHYS);
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else
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ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS);
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#ifdef MULTICAST
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ifp->if_flags |= IFF_MULTICAST;
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#endif
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/*
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* Attach the interface
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@ -1165,10 +1169,16 @@ ed_init(unit)
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outb(sc->nic_addr + ED_P0_RBCR0, 0);
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outb(sc->nic_addr + ED_P0_RBCR1, 0);
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#if 0
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/*
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* Enable reception of broadcast packets
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*/
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outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB);
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#endif
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/*
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* Tell RCR to do nothing for now.
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*/
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outb(sc->nic_addr + ED_P0_RCR, ED_RCR_MON);
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/*
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* Place NIC in internal loopback mode
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@ -1213,15 +1223,24 @@ ed_init(unit)
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for (i = 0; i < ETHER_ADDR_LEN; ++i)
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outb(sc->nic_addr + ED_P1_PAR0 + i, sc->arpcom.ac_enaddr[i]);
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#if NBPFILTER > 0
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/*
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* Initialize multicast address hashing registers to accept
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* all multicasts (only used when in promiscuous mode)
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*/
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for (i = 0; i < 8; ++i)
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outb(sc->nic_addr + ED_P1_MAR0 + i, 0xff);
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#endif
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#ifdef MULTICAST
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/* set up multicast addresses and filter modes */
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if (sc != 0 && (ifp->if_flags & IFF_MULTICAST) != 0) {
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u_long mcaf[2];
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if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
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mcaf[0] = 0xffffffff;
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mcaf[1] = 0xffffffff;
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} else
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ds_getmcaf(sc, mcaf);
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/*
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* Set multicast filter on chip.
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*/
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for (i = 0; i < 8; i++)
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outb(sc->nic_addr + ED_P1_MAR0 + i, ((u_char *)mcaf)[i]);
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}
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#endif
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/*
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* Set Current Page pointer to next_packet (initialized above)
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*/
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@ -1233,6 +1252,11 @@ ed_init(unit)
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*/
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outb(sc->nic_addr + ED_P1_CR, ED_CR_RD2|ED_CR_STA);
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/*
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* Clear all interrupts.
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*/
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outb(sc->nic_addr + ED_P0_ISR, 0xff);
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/*
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* Take interface out of loopback
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*/
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@ -1250,6 +1274,25 @@ ed_init(unit)
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}
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}
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i = ED_RCR_AB;
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if (sc != 0) {
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if ((ifp->if_flags & IFF_PROMISC) != 0) {
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/*
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* Set promiscuous mode.
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* Also reconfigure the multicast filter.
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*/
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int j;
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i |= ED_RCR_PRO|ED_RCR_AM|ED_RCR_AR|ED_RCR_SEP;
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for (j = 0; j < 8; j++)
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outb(sc->nic_addr + ED_P1_MAR0 + j, 0xff);
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}
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#ifdef MULTICAST
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i |= ED_RCR_AM;
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#endif
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}
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outb(sc->nic_addr + ED_P0_RCR, i);
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/*
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* Set 'running' flag, and clear output active flag.
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*/
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@ -1892,41 +1935,32 @@ ed_ioctl(ifp, command, data)
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((ifp->if_flags & IFF_RUNNING) == 0))
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ed_init(ifp->if_unit);
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}
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#if NBPFILTER > 0
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if (ifp->if_flags & IFF_PROMISC) {
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/*
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* Set promiscuous mode on interface.
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* XXX - for multicasts to work, we would need to
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* write 1's in all bits of multicast
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* hashing array. For now we assume that
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* this was done in ed_init().
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*/
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outb(sc->nic_addr + ED_P0_RCR,
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ED_RCR_PRO|ED_RCR_AM|ED_RCR_AB);
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} else {
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/*
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* XXX - for multicasts to work, we would need to
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* rewrite the multicast hashing array with the
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* proper hash (would have been destroyed above).
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*/
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outb(sc->nic_addr + ED_P0_RCR, ED_RCR_AB);
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}
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#endif
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/*
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* An unfortunate hack to provide the (required) software control
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* of the tranceiver for 3Com boards. The ALTPHYS flag disables
|
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* the tranceiver if set.
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* NB: There was a bunch of code here that's now in ed_init.
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*/
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if (sc->vendor == ED_VENDOR_3COM) {
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if (ifp->if_flags & IFF_ALTPHYS) {
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outb(sc->asic_addr + ED_3COM_CR, 0);
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} else {
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outb(sc->asic_addr + ED_3COM_CR, ED_3COM_CR_XSEL);
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}
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}
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break;
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#ifdef MULTICAST
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case SIOCADDMULTI:
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case SIOCDELMULTI:
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/*
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* Update our multicast list.
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*/
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error = (command == SIOCADDMULTI) ?
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ether_addmulti((struct ifreq *)data, &sc->arpcom):
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ether_delmulti((struct ifreq *)data, &sc->arpcom);
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if (error == ENETRESET) {
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/*
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* Multicast list has changed; set the hardware filter
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* accordingly.
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*/
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ed_stop(ifp->if_unit); /* XXX for ds_setmcaf? */
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ed_init(ifp->if_unit);
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error = 0;
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}
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break;
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#endif
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default:
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error = EINVAL;
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}
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@ -2372,4 +2406,64 @@ ed_ring_to_mbuf(sc,src,dst,total_len)
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}
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return (m);
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}
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#ifdef MULTICAST
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/*
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* Compute crc for ethernet address
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*/
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u_long
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ds_crc(ep)
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u_char *ep;
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{
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#define POLYNOMIAL 0x04c11db6
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register u_long crc = 0xffffffffL;
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register int carry, i, j;
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register u_char b;
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for (i = 6; --i >= 0; ) {
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b = *ep++;
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for (j = 8; --j >= 0; ) {
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carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
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crc <<= 1;
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b >>= 1;
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if (carry)
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crc = ((crc ^ POLYNOMIAL) | carry);
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}
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}
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return crc;
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#undef POLYNOMIAL
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}
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/*
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* Compute the multicast address filter from the
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* list of multicast addresses we need to listen to.
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*/
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void
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ds_getmcaf(sc, mcaf)
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struct ed_softc *sc;
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u_long *mcaf;
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{
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register u_int index;
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register u_char *af = (u_char*)mcaf;
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register struct ether_multi *enm;
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register struct ether_multistep step;
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mcaf[0] = 0;
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mcaf[1] = 0;
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ETHER_FIRST_MULTI(step, &sc->arpcom, enm);
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while (enm != NULL) {
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if (bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) {
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mcaf[0] = 0xffffffff;
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mcaf[1] = 0xffffffff;
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return;
|
||||
}
|
||||
index = ds_crc(enm->enm_addrlo, 6) >> 26;
|
||||
af[index >> 3] |= 1 << (index & 7);
|
||||
|
||||
ETHER_NEXT_MULTI(step, enm);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue