[tulip] Help forcing to 100M

[Rob Torop]

I have a linksys LNE100TX NIC.  I've noticed that my network is kind of
slow, and that I am only getting 27mb/s on file transfers (all NICS are
100M).  To eliminate other sources of error, I tested by connecting two
machines using a crossover cable and got the same performance (i..e. no
hubs, switches, etc involved in the test).

>From running tulip-diag (output appended), I infer that the NIC on one
of my machines is not in 100M full duplex mode. I tried to force it to
100M by doing this:

    ifdown eth0
    rmmod tulip
    insmod tulip options=3
    ifup eth0

However in this state, I couldn't even ping another machine. I tried
other values than 3, and got the same result.  Only 0 works.  I'm using
version 0.92 of tulip.c.  Any advice?  Thanks.

# tulip-diag -v -ee
tulip-diag.c:v1.19 10/2/99 Donald Becker (becker@cesdis.gsfc.nasa.gov)
Index #1: Found a Lite-On PNIC-II adapter at 0xd400.
 Port selection is 10mpbs-serial, half-duplex.
 Transmit started, Receive started, half-duplex.
  The Rx process state is 'Waiting for packets'.
  The Tx process state is 'Idle'.
  The transmit threshold is 72.
  The NWay status register is 41e1d0cc.
 The current PNIC-II MAC address is 00:a0:cc:34:fd:bf (a000a000
34ccbffd).
 The current PNIC-II WOL address is 00:a0:cc:34:fd:bf.
EEPROM size is 6.
  Ethernet MAC Station Address 00:a0:cc:34:fd:bf.
  Wake-On-LAN ID bytes a0:00:34:cc:bf:fd.
  PCI Subsystem IDs  Vendor 11ad Device 01c0
EEPROM contents:
  0000 0000 0000 0000 0000 0000 0000 0000
  0000 0000 a000 34cc bffd a000 34cc 0000
  0000 0000 0000 0000 0000 0000 0000 0000
  0000 0000 0000 0000 0000 bffd 0000 0000
  0000 0000 0000 0000 0000 0000 0000 0000
  0000 0000 0000 0000 0000 c001 11ad 0000
  0000 0000 0000 0000 0000 0000 0000 0000
  0014 0000 0000 0800 0000 c115 11ad 8267
 ID block CRC 0xe3 (vs. 00).
  Full contents CRC 0x8267 (read as 0x8267).
  Internal autonegotiation state is 'Negotiation complete'.
#

# /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr 00:A0:CC:34:FD:BF
          inet addr:192.168.0.51  Bcast:192.168.0.255
Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1153 errors:0 dropped:0 overruns:0 frame:0
          TX packets:913 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          Interrupt:11 Base address:0x9000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:3924  Metric:1
          RX packets:109376131 errors:0 dropped:0 overruns:0 frame:0
          TX packets:109376131 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0