Re: IEEE80211_IOC_STA_STATS broken?

[David Young <dyoung%pobox.com@localhost>]

On Tue, Oct 28, 2008 at 04:10:57PM +0000, Roy Marples wrote:
> Hi List
> 
> I'm having a spot of bother getting the IEEE80211_IOC_STA_STATS ioctl
> to work. For some reason it always returns Invalid Argument EINVAL.
> 
> #include <sys/types.h>
> #include <sys/socket.h>
> #include <sys/ioctl.h>
> 
> #include <net/if.h>
> #include <net80211/ieee80211.h>
> #include <net80211/ieee80211_ioctl.h>
> 
> #include <stdio.h>
> #include <string.h>
> #include <stdlib.h>
> #include <unistd.h>
> #include <errno.h>
> 
> int main(void) {
>         struct ieee80211req ireq;
>         char buf[24*1024];
>         int s = socket(AF_INET, SOCK_DGRAM, 0);
> 
>         memset(&ireq, 0, sizeof(ireq));
>         strlcpy(ireq.i_name, "iwi0", sizeof(ireq.i_name));
>         ireq.i_type = IEEE80211_IOC_STA_STATS;
>         ireq.i_data = buf;
>         ireq.i_len = sizeof(buf);
>         if(ioctl(s, SIOCG80211, &ireq) != 0)
>                 perror("SIOCG80211");
>         else
>                 printf ("ok\n");
>         return 0;
> }
> 
> If someone could tell me what I'm doing wrong or it's it's a
> NetBSD-4.99.73 bug I'd appreciate it.

Apparently, i_data has to point at a STA's MAC address:

        error = copyin(ireq->i_data, macaddr, IEEE80211_ADDR_LEN);
        if (error != 0)
                return error;
        ni = ieee80211_find_node(&ic->ic_sta, macaddr);
        if (ni == NULL)
                return EINVAL;          /* XXX */

Instead of EINVAL, it should return ENOENT, IMO.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933 ext 24