Daniel: Try libpcap. For an example, look at kismet <http://www.kismetwireless.net/> On Thu, 2005-02-03 at 12:34 -0700, Daniel Henkel wrote: > Hi, > > I have written a small sniffer which sits there and looks for wireless > traffic on a raw socket. The device is a WiFi card; driver madwifi. > I'm using select() to see whether there is something to read or not. > The rough structure is like this: > > while(1) > { > select() > recv() > process() > output() > } > > The app is running on Debian on an AMD 486 single board computer, > i.e., quite limited processing power. > > Problem 1: > In a crowded environment, I am not getting all packets that are sent > by wireless devices around me. How can I quantify the number of > packets that I'm getting (i.e., processing in my loop) versus the > total number of packets seen by the device, but dropped due to > limited processing power? > > Problem 2: > Is there a more efficient way to capture packets off the device such > that the number of captured packets is maximized? > > Thanks in advance, > - Daniel. > > - > : send the line "unsubscribe linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Lawrence MacIntyre 865.574.8696 macintyrelp@xxxxxxxx Oak Ridge National Laboratory High Performance Information Infrastructure Technology Group AKO: lawrence.macintyre@xxxxxxxxxxx SIPRNet: macintyrelp@xxxxxxxxxxxxxxxxx - : send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
