* On Network Drivers......
@ 2001-08-20 12:14 Venu Gopal Krishna Vemula
0 siblings, 0 replies; 4+ messages in thread
From: Venu Gopal Krishna Vemula @ 2001-08-20 12:14 UTC (permalink / raw)
To: linux-kernel
Hi,
We are planning to implement a Network driver in
Linux.
Our requirement:
A driver of layered one.., in which one layer
communicates with another. But overall there should be
only one driver . (Just like Stream's drivers, but we
don't want Stream Drivers).
Is there any support in Linux to implement Network
Drivers as multi layered in a single driver .If so,
please let me know where I can get good information?
With Thanks
regards,
vvgkrishna_78@yahoo.com
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^ permalink raw reply [flat|nested] 4+ messages in thread[parent not found: <no.id>]
* Re: On Network Drivers......
[not found] <no.id>
@ 2001-08-20 12:36 ` Alan Cox
2001-08-21 10:11 ` Venu Gopal Krishna Vemula
2001-08-21 13:53 ` Alan Cox
1 sibling, 1 reply; 4+ messages in thread
From: Alan Cox @ 2001-08-20 12:36 UTC (permalink / raw)
To: Venu Gopal Krishna Vemula; +Cc: linux-kernel
> A driver of layered one.., in which one layer
> communicates with another. But overall there should be
> only one driver . (Just like Stream's drivers, but we
> don't want Stream Drivers).
> Is there any support in Linux to implement Network
> Drivers as multi layered in a single driver .If so,
> please let me know where I can get good information?
We have a single layer between the network stack and the drivers. However
nothing stops drivers from implementing multiple layers internally or
calling back into other drivers. shaper is an example of a driver that
calls other drivers.
The basic attitude is layering is slow, and generally poor for the cache
behaviour. You want to do a single pass of the packet (or less if possible
when using DMA). However the interface is flexible and if a driver wants
to be layered or has reason for it - sure it can do it internally
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: On Network Drivers......
2001-08-20 12:36 ` Alan Cox
@ 2001-08-21 10:11 ` Venu Gopal Krishna Vemula
0 siblings, 0 replies; 4+ messages in thread
From: Venu Gopal Krishna Vemula @ 2001-08-21 10:11 UTC (permalink / raw)
To: linux-kernel; +Cc: Alan Cox
Sir,
--- Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
>> A driver of layered one.., in which one layer
>> communicates with another. But overall there
>> should be only one driver . (Just like Stream's
>> drivers, but we don't want Stream Drivers).
>
> We have a single layer between the network stack and
> the drivers. However nothing stops drivers from
> implementing multiple layers internally or
> calling back into other drivers. shaper is an
> example of a driver that calls other drivers.
>
Can you please explain something about implementing
multiple layers internally in a Network Driver
or
inform me where i can find information (Source code)
Today i have searched a lot to find any
information related to the Network driver(in which
multiple layers has to develop internally) in
Internet, but i could not found any source code or
information in Internet.
With Thanks,
regards,
vvgkrishna_78@yahoo.com
__________________________________________________
Do You Yahoo!?
Make international calls for as low as $.04/minute with Yahoo! Messenger
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: On Network Drivers......
[not found] <no.id>
2001-08-20 12:36 ` Alan Cox
@ 2001-08-21 13:53 ` Alan Cox
1 sibling, 0 replies; 4+ messages in thread
From: Alan Cox @ 2001-08-21 13:53 UTC (permalink / raw)
To: Venu Gopal Krishna Vemula; +Cc: linux-kernel, Alan Cox
> information related to the Network driver(in which
> multiple layers has to develop internally) in
> Internet, but i could not found any source code or
> information in Internet.
How strange. The kernel source code is definitely on the internet, and
definitely contains drivers that implement internal layering -
nrdev, shaper, the sync cards, isdn
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2001-08-21 13:50 UTC | newest]
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2001-08-20 12:14 On Network Drivers Venu Gopal Krishna Vemula
[not found] <no.id>
2001-08-20 12:36 ` Alan Cox
2001-08-21 10:11 ` Venu Gopal Krishna Vemula
2001-08-21 13:53 ` Alan Cox
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