Andy Green wrote: > I was saying maybe there is an easy patch there going into the IOCTL > stuff that iwconfig uses and putting something more meaningful in this > returned member.
Let's see ... for the AR6k, the code is here drivers/sdio/function/wlan/ar6000/ar6000/wireless_ext.c:ar6000_set_quality What it does is that it only looks at the SNR, even though it often calls it the RSSI [1], and the description of that function uses the two almost interchangeably. The noise floor is just a hard-coded best guess, as expected. The chip does return the RSSI as well [2], but it just seems to do exactly the same calculation as the driver, i.e., reported RSSI = reported SNR - hard-coded noise. [1] http://en.wikipedia.org/wiki/RSSI [2] This is the data structure that comes from the chip: drivers/sdio/function/wlan/ar6000/include/wmi.h:WMI_BSS_INFO_HDR So, short of actually trying to associate, this seems to be as much information we can get. - Werner _______________________________________________ hardware mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/hardware
