mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 01:51:53 +00:00
25985edced
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
59 lines
2.4 KiB
Plaintext
59 lines
2.4 KiB
Plaintext
|
|
3COM PCI TOKEN LINK VELOCITY XL TOKEN RING CARDS README
|
|
|
|
Release 0.9.0 - Release
|
|
Jul 17th 2000 Mike Phillips
|
|
|
|
1.2.0 - Final
|
|
Feb 17th 2002 Mike Phillips
|
|
Updated for submission to the 2.4.x kernel.
|
|
|
|
Thanks:
|
|
Terry Murphy from 3Com for tech docs and support,
|
|
Adam D. Ligas for testing the driver.
|
|
|
|
Note:
|
|
This driver will NOT work with the 3C339 Token Ring cards, you need
|
|
to use the tms380 driver instead.
|
|
|
|
Options:
|
|
|
|
The driver accepts three options: ringspeed, pkt_buf_sz and message_level.
|
|
|
|
These options can be specified differently for each card found.
|
|
|
|
ringspeed: Has one of three settings 0 (default), 4 or 16. 0 will
|
|
make the card autosense the ringspeed and join at the appropriate speed,
|
|
this will be the default option for most people. 4 or 16 allow you to
|
|
explicitly force the card to operate at a certain speed. The card will fail
|
|
if you try to insert it at the wrong speed. (Although some hubs will allow
|
|
this so be *very* careful). The main purpose for explicitly setting the ring
|
|
speed is for when the card is first on the ring. In autosense mode, if the card
|
|
cannot detect any active monitors on the ring it will open at the same speed as
|
|
its last opening. This can be hazardous if this speed does not match the speed
|
|
you want the ring to operate at.
|
|
|
|
pkt_buf_sz: This is this initial receive buffer allocation size. This will
|
|
default to 4096 if no value is entered. You may increase performance of the
|
|
driver by setting this to a value larger than the network packet size, although
|
|
the driver now re-sizes buffers based on MTU settings as well.
|
|
|
|
message_level: Controls level of messages created by the driver. Defaults to 0:
|
|
which only displays start-up and critical messages. Presently any non-zero
|
|
value will display all soft messages as well. NB This does not turn
|
|
debugging messages on, that must be done by modified the source code.
|
|
|
|
Variable MTU size:
|
|
|
|
The driver can handle a MTU size up to either 4500 or 18000 depending upon
|
|
ring speed. The driver also changes the size of the receive buffers as part
|
|
of the mtu re-sizing, so if you set mtu = 18000, you will need to be able
|
|
to allocate 16 * (sk_buff with 18000 buffer size) call it 18500 bytes per ring
|
|
position = 296,000 bytes of memory space, plus of course anything
|
|
necessary for the tx sk_buff's. Remember this is per card, so if you are
|
|
building routers, gateway's etc, you could start to use a lot of memory
|
|
real fast.
|
|
|
|
2/17/02 Mike Phillips
|
|
|