On 7/4/07, pradeep singh <2500.pradeep@xxxxxxxxx> wrote:
On 7/5/07, Rajat Jain <Rajat.Jain@xxxxxxxxxxxx> wrote:
>
> Hi Prasad,
>
> The running kernel version has to EXACTLY match with the kernel source tree that you are compiling your module against. This includes the EXTRA_VERSION information in the makefile. For e.g, a running "2.6.9-5.EL" (Redhat) kernel won't be able to load a module compiled against 2.6.9.
>
> Also, I think (but I'm not sure) that the compiler must be the same that was used in compiling the kernel. Can somebody please confirm this?
Yes, it has to be same.
>
> Thanks,
>
> Rajat
>
>
> -----Original Message-----
> From: kernelnewbies-bounce@xxxxxxxxxxxx [mailto:kernelnewbies-bounce@xxxxxxxxxxxx]On Behalf Of prasad hegde
> Sent: Thursday, July 05, 2007 7:05 AM
> To: kernelnewbies
> Subject: problem with registering net_dev
>
>
> Hi,
>
> I am a newbie trying to learn working of network device.
> I was trying a stripped down version of snull.c example in ldd3
>
> I am not able to load the module.
>
> dmesg says
>
> net_drive: disagrees about version of symbol alloc_netdev
> net_drive: Unknown symbol alloc_netdev
>
> Even though I am running 2.6.20 and my code is also compiled against 2.6.20, they both are different kernels.
> Is this a problem, I dont think so.
>
> My relevant code snippet is
>
> int snull_init_module(void)
> {
> int result, i, ret = -ENOMEM;
>
> /* Allocate the devices */
> snull_devs[0] = alloc_netdev(sizeof(struct snull_priv), "sn%d",
> snull_init);
> snull_devs[1] = alloc_netdev(sizeof(struct snull_priv), "sn%d",
> snull_init);
> if (snull_devs[0] == NULL || snull_devs[1] == NULL)
> goto out;
>
> out:
> if (ret)
> return ret;
> }
>
> void snull_init(struct net_device *dev )
> {
> return;
> }
>
> module_init(snull_init_module);
>
>
> Any help or pointers are appreciated.
>
> Thanks
> Prasad.
>
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