[uClinux-dev] insmod wlan_ccmp problem within uclinux

[Doug Kehn]

Hi Advan,

--- advan wrote:

> hello,everyone .
>   I meet a strange problem within uclinux upon
> ixp425 platform , I insmod all madwifi modules for
> atheros chip , when I insmod 'wlan_ccmp.o' , there's
> such information as below:
>     Using
>
/lib/modules/2.4.31-uc0/kernel/drivers/net/wlan_ccmp.o
> insmod: unresolved symbol crypto_alloc_tfm
> insmod: unresolved symbol crypto_free_tfm
>
> using 
> # cat /proc/ksyms |grep crypto_alloc_tfm
> c00ea954 GPLONLY_crypto_alloc_tfm
> # cat /proc/ksyms |grep crypto_free_tfm
> c00eaa10 GPLONLY_crypto_free_tfm
> 
> why does kernel function have 'GPLONLY' in its
> prefix ?
>

This means that the symbols were exported with
EXPORT_SYMBOL_GPL(...).  See

http://ussg.iu.edu/hypermail/linux/kernel/0110.2/0369.html

for an excellent description.  Is wlan_ccmp a GPL'd
module.  If not, wlan_ccmp is not allowed to use
symbols crypto_alloc_tfm and crytpo_free_tfm.
 
Regards,
...doug



       
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