Hi, I am attempting to implement a circular buffer for the tx path of a networking driver. From my understanding this is something that is very common, yet I am struggling to find a clear way to do it. I have tried to read the source for ath6kl, brcmfmac without success. I have read Documentation/circular-buffers.txt and this seems like the solution however grep'ing drivers/net hints that this is not that common a way to solve this problem. Also I'm getting in knots with atomic_t types when copying the text document. Before I bore you with all my non-working code, does any one please know, off the top of their heads, a driver with simple-ish / nice clean implementation that I can learn from? thanks, Tobin.