lance-p01.txt -- A patch for the AMD LANCE driver to support multiple NICs
K. TAKAHAGI <ktakahagi@jcom.home.ne.jp> -- released Jul 2005

    The AMD LANCE driver in 204ether.tar.Z doesn't support more than one NIC.
    This patch enables the driver to work properly with two (or three) NICs.
    A fix for mnx_eth.c which is linked to the INET server is required.
    A patch for ping.c to read the environment IP_DEVICE is included, too.

INSTALLATION & USAGE

    $ su bin
    ! cp lance-p01.taz /usr/local/src/204ether
    ! cd /usr/local/src/204ether
    ! cat lance-p01.taz | uncompress | tar xvf -

    ! cd /usr/src/kernel
    ! patch < /usr/local/src/204ether/lance-p01/lance.diff
    ! make

    ! cd /usr/src/inet
    ! patch < /usr/local/src/204ether/lance-p01/mnx_eth.diff
    ! make
    ! su
    # make install
    # exit

    ! cd /usr/src/commands/simple
    ! patch < /usr/local/src/204ether/lance-p01/ping.diff
    ! make ping
    ! su
    # make /usr/bin/ping
    # exit

    ! su -
    # vi /etc/inet.conf
    eth0 LANCE 0 { default; };
    eth1 LANCE 1;
    # exit

    ! cd /usr/src/tools
    ! make hdboot
    ! shutdown

    > servers=inet
    > LANCE0=pci
    > LANCE1=pci
    > boot

    $ hostaddr -e -E /dev/eth1
    $ ifconfig -I /dev/ip1

    $ su -
    # ifconfig -I /dev/ip1 -h <ipaddr> -n <netmask>
    # ifconfig -I /dev/ip1

    # add_route -I /dev/ip1 -g <gateway>
    # pr_routes -I /dev/ip1

    # export IP_DEVICE=/dev/ip1
    # ping <ipaddr>
    # ping <gateway>
    # unset IP_DEVICE

    # vi /etc/resolv.conf

    # hostaddr -a -I /dev/ip1
    # export UDP_DEVICE=/dev/udp1
    # hostaddr -a -I /dev/ip1
    # unset UDP_DEVICE

    # export TCP_DEVICE=/dev/tcp1
    # export UDP_DEVICE=/dev/udp1
    # tcpd telnet in.telnetd &
    # tcpd ftp in.ftpd &
      :
    # exit

    $ export TCP_DEVICE=/dev/tcp1
    $ export UDP_DEVICE=/dev/udp1
    $ telnet <host>
    $ ftp <host>
      :
    $ unset TCP_DEVICE
    $ unset UDP_DEVICE
    $

    F5 dump looks like the following:

    lance statistics of port 0:
    recvErr    :       0    sendErr    :       0    OVW        :       0
    CRCerr     :       0    frameAll   :       0    missedP    :       0
    packetR    :   10764    packetT    :   13611    transDef   :       0
    collision  :       0    transAb    :       0    carrSense  :       0
    fifoUnder  :       0    fifoOver   :       0    CDheartbeat:       0
    OWC        :       0    isr = 0x72 + 0x72, flags = 0x390
    lance statistics of port 1:
    recvErr    :       0    sendErr    :       0    OVW        :       0
    CRCerr     :       0    frameAll   :       0    missedP    :       0
    packetR    :     271    packetT    :     194    transDef   :       0
    collision  :       0    transAb    :       0    carrSense  :       0
    fifoUnder  :       0    fifoOver   :       0    CDheartbeat:       0
    OWC        :       0    isr = 0x72 + 0x72, flags = 0x390

    To use three NICs, you can set EC_PORT_NR_MAX to 3 in ether.h.
    Don't be silly. It's not needed in 99% of the cases. :-)