Hi all, I am trying to implement the HCF with a AR9280 chip. I already changed the beacons in order to include the 'CF parameter set' every n DTIM. I was glad to discover that after this message the AR_NAV register was automatically updated with the information of the "CFP duration remaining" and the driver started to buffer the new outgoing frames. I was not able to find where this is done in the driver so I guess it is a hardware thing. Please correct me if I am wrong. The bad news are that the driver/hardware updates the register in the next beacon (that is not that bad for me for the moment, I will try to change the register manually later). I got to send the first CF-poll just after the DTIM that indicates the start of a CFP. I just saw the procedure for the CAB traffic and used the flag IEEE80211_TX_CTL_SEND_AFTER_DTIM. The next step I would like to try is to prepare the next CF-poll frame in order to send it SIFS after the answer or PIFS if no answer arrived. I configured the fourth queue to use it with this kind of traffic. Is is possible to schedule the transmission of one frame? I tried to have a look at the tx descriptors in the code and in the web, but I don't understand them (there is no much information and unfortunately I am far from being a linux expert). Any advice? Sorry for my english, the more german I learn, the less english I can :-p. Thank you in advance -- 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
