sri ram wrote: > Hi, > I am a newbie to this group and am currently looking at experimenting > with the ath9k driver. > I spent some time looking at the code available through the latest version of > compat-wireless and have a few questions. >
Welcome. > 1) Where is multi-stream transmission implemented? Currently, I only see one > point in the code where the chainmask setting is used to change from 3*3 to > 2*2.. Is it always that a 3*3 is tried if possible failing which a 2*2 is > attempted? > The TX chainmasks are calculated in ath_buf_set_rate() @ xmit.c, and set in the appropriate descriptor control registers using set11nRateFlags. I think that currently we just transmit in all available TX chains and am confident that ath_chainmask_sel_logic() is borked. :) > 2) I am trying to understand what flexibility do the cards provide? Do they > support beamforming already or not? What kind of flexibility ? Can you provide details ? And nope, beamforming is not supported. > Is there some good documentation on the physical/cross layer mechanisms used > in 11n (apart from frame aggregation). > Any pointers on the above will be greatly appreciated. > Nope, no documentation. :) Sujith _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
