On Wed, Mar 24, 2010 at 9:43 AM, Anthony <lazugau@xxxxxxxxx> wrote: > Hi all, > I'm using: > Ubuntu 9.10 > Atheros card with ath9k > compat-wireless latest stable version > ad-hoc 802.11g with 2 nodes (same hardware & software configuration) > > I tried to inject packets using mac80211 (similar way as in packetspammer) > Radiotap header contains only Flag=0 & Rate=1Mbps (total size = 14 bytes) > However when I use wireshark to capture traffic, I discovered that > each frame was sent twice: > first time with 14 bytes radiotap header > second time with 13 bytes of radiotap header (Rate omitted), so 54Mbps here. Are you sure it is not the AP relaying the packet? > > Is this a problem of ath9k or a default feature of 802.11 ??? > > Another question: if I set the FCS flag to send frame with all zeros > FCS, the receiver reported frame as bad FCS, but still deliver it to > upper layer. Why? I think the frame should be discarded ? I want to > simulate broken phy link by jamming FCS. Is there any alternative way > ? > > Hope some one can help. > > Thank you. > > Anthony > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
