Re: Re[2]: net_device + pci_dev question

Arjan van de Ven
2005-11-28T21:03:43Z

On Mon, 2005-11-28 at 21:56 +0100, Mateusz Berezecki wrote:
> Hello Arjan,
>
> On 27th november 2005 (22:25:13) you wrote:
>
> > On Sun, 2005-11-27 at 20:58 +0100, Mateusz Berezecki wrote:
> >> Hello List!
> >>
> >> Having only net_device pointer is it possible to retrieve associated pci_dev
> >> pointer basing on this information only?
>
> > what do you need it for?
>
> for pci_alloc_consistent() which takes pci_dev as a first argument to
> allocate contiguous memory block for DMA transfers. I just realized

oh it's *your own* netdev...

that makes things a lot easier ;)

it's custom to have driver private data per net dev
(see netdev_priv() to get it, alloc_etherdev() takes the size of it as
argument). It's custom to make that private data a struct in which you
can store the pci device pointer yourself, as well as any other per card
data that you need to store