[ECOS] question about bridging code.

bill guckel bguckel@cisco.com
Thu Jan 30 15:09:00 GMT 2003

I'm hoping someone can answer a question about the function
bridge_input() in net/tcpip/current/src/sys/net/if_bridge.c.
         * Unicast, make sure it's not for us.
        for (ifl = LIST_FIRST(&sc->sc_iflist);ifl; ifl =
LIST_NEXT(ifl,next)) {
                if (ifl->ifp->if_type != IFT_ETHER)
                ac = (struct arpcom *)ifl->ifp;
                if (bcmp(ac->ac_enaddr, eh->ether_dhost, ETHER_ADDR_LEN) ==
0) {
                        if (ifl->bif_flags & IFBIF_LEARNING)
                                    (struct ether_addr *)&eh->ether_dhost,
                                    ifp, 0, IFBAF_DYNAMIC);
                        m->m_pkthdr.rcvif = ifl->ifp;
                        return (m);

My question concerns the the passing of 'ether_dhost' to
Why not 'ether_shost' ?  This would seem to me (not a bridging expert) be a
more important address to learn.  Note that I may be using old code since
it's been a while since I took new source.

bill guckel

Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
and search the list archive: http://sources.redhat.com/ml/ecos-discuss

More information about the Ecos-discuss mailing list