net_device list in kernel

net_device list in kernel

[dipi_k]

Hi,
  
 I have one doubt.

  There is a list of the devices(net_device{} structures) maintained in kernel which has all the interfaces initialised by that time. This list is refrenced by dev_base variable.

 I need following info

1) does kernel maintain a global variable which keeps the count of net_device{} in above list?

2) Is this list modified(net_device{} added or deleted ) once it's initialised at boot time?

PLEASE reply to my PERSONAL account. I haven't subscribed to this mailing list.

thanks & regards,
Deepika


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Re: net_device list in kernel

[Arnaldo Carvalho de Melo]

Em Wed, Jun 13, 2001 at 12:14:18PM -0700, dipi_k@123india.com escreveu:
> 
> Hi,
>   
>  I have one doubt.
> 
>   There is a list of the devices(net_device{} structures) maintained in kernel which has all the interfaces initialised by that time. This list is refrenced by dev_base variable.
> 
>  I need following info
> 
> 1) does kernel maintain a global variable which keeps the count of net_device{} in above list?

not that I'm aware
 
> 2) Is this list modified(net_device{} added or deleted ) once it's initialised at boot time?

Yes, think about loading a module for a network card, it will add one entry
(or more in some cases) to this list, or think about net aliases. Look at
register_netdevice in net/core/dev.c
 
- Arnaldo