WPA-PSK for Aironet

[Dan Williams]

On Thu, 2007-01-04 at 11:17 +0530, Basavaraj Arani wrote:
> Hi Dan,
> 
> I am using the Firmware 5.6.08. But whenever I set the WPA key, the
> card somehow doesn't get associated with the Access Point.
> I am using the DLink-DWL-7100AP access point. 

Well, note that the driver modifications Matthieu made aren't fully
debugged and aren't integrated upstream into the kernel, so there are no
guarantees that everything works in the driver yet.  I'm working on
cleaning it up and integrating the WPA code into the existing Airo
driver, but it's a slow process since we want the same driver to be used
for all modes.

> Here is the code for setting the WPA on/off 
> ........
>     if(!strcasecmp(args[0], "on"))
>     {
>         //wrq.u.param.flags = IW_AUTH_WPA_ENABLED & IW_AUTH_INDEX;
>         wrq.u.param.flags = IW_AUTH_DROP_UNENCRYPTED & IW_AUTH_INDEX; 
>         wrq.u.param.value = 1;
> 
>         if(iw_set_ext(skfd, ifname, SIOCSIWAUTH, &wrq) < 0)
>                 return(IWERR_SET_EXT);
> 
>     }
>     else if(!strcasecmp(args[0], "off"))
>     { 
>         wrq.u.param.flags = IW_AUTH_WPA_ENABLED & IW_AUTH_INDEX;
>         wrq.u.param.value = 0;
> 
>         if(iw_set_ext(skfd, ifname, SIOCSIWAUTH, &wrq) < 0)
>                 return(IWERR_SET_EXT); 
>     }
> ........
> 
> and for setting the WPA keys, I have the following code.
> 
> static int
> set_wpakey_info(int             skfd,
>              char *             ifname,
>              char *             args[], 
>              int                count)
> {
>     struct iwreq wrq;
>     struct iw_encode_ext *iwee;
>     unsigned char key[IW_ENCODING_TOKEN_MAX];
>     int keylen = strlen(args[0]);
>     
>     memset(&wrq, 0x00, sizeof(wrq)); 
> 
>     memcpy(key, args[0], keylen);
>     iwee = (struct iw_encode_ext *)malloc(sizeof(struct iw_encode_ext)
> + IW_ENCODING_TOKEN_MAX);
>     
>     iwee->alg = IW_ENCODE_ALG_WEP;

You appear to be telling the driver to use a WEP key, not a WPA key.
You probably want IW_ENCODE_ALG_TKIP here.

Dan

>     iwee->key_len = keylen; 
>     iwee->ext_flags = 1;
>     memcpy(iwee->key, key, keylen);
>     
>     wrq.u.encoding.pointer = (caddr_t)iwee;
>     wrq.u.encoding.flags =  1;
>     wrq.u.encoding.length = sizeof(struct iw_encode_ext) + keylen; 
>     if(iw_set_ext(skfd, ifname,SIOCSIWENCODEEXT, &wrq) < 0)
>     {
>        return(IWERR_SET_EXT);
>     }
>     return(1);
> }
> 
> I tried to set a key of length 32.
> The key I set at both the ends (AP/ client adapater) is 
> abcdefghijklmnopqrstuvwxyzabcdef.
> 
> But the card doesn't get associated with the AP.
> 
> Please help me in resolving this problem.
> 
> Many thanks in advance.
> 
> Regards,
> Basu
> 
> 
> On 1/4/07, Dan Williams <dcbw at redhat.com> wrote: 
>         On Wed, 2007-01-03 at 09:20 +0700, kemas henry wrote:
>         > On Tue, 2007-01-02 at 18:13 +0100, castet.matthieu at free.fr
>         wrote:
>         > > Selon R Arani Basavaraj-a24052 <basavaraj at motorola.com>:
>         > >
>         > > > 
>         > > > Hi,
>         > > Hi,
>         > >
>         > > >
>         > > > Is the current Linux driver for aironet pc4500 driver
>         supports WPA-PSK?
>         > > > I downloaded the airo driver which claims to support
>         WPA-PSK from 
>         > > > http://castet.matthieu.free.fr/airo, but it doesn't
>         seems to be working well 
>         > > > for me.
>         > > AFAIK, only 340 and 350 series with a recent firmware
>         support wpa. The older 
>         > > cards don't.
>         >
>         > did you mean cisco 340 and 350 pcmcia ?
>         
>         Correct, only the 340 and 350 versions, in both MiniPCI and
>         PCMCIA.
>         You'll need firmware version 5.30.17 or later to do WPA. 
>         
>         > what kind of WPA that this card support ?
>         
>         TKIP encryption only, with either WPA or WPA2.  The hardware
>         just cannot
>         do AES/CCMP.
>         
>         Dan
>         
>         
>         
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