hi,<div>I am using <b>voyage-0.8.0</b> OS which has <b>3.0.0-voyage </b>as kernel and it is installed in ALIX node. I am using AR922X wireless cards from atheros and compat wireless's(3.1.1.1-1) <b>ath9k</b> as driver. I am getting into an issue when subjecting the cards to stress. Whenever I try to send traffic at the rate of 54 MBps between two alix nodes (one as AP and one as client), the traffic initially proceeds normally for around 5-10 minutes. After that, the AP disconnects from the client and the client can never again associate back with the AP. I need to restart hostapd and then only reconnect. I tried different cards that interface with ath9k and I get the same result, so I am assuming that it must be a problem with the driver or kernel.</div>
<div><br></div><div>I get the following error message in the kernel. I dont know if the below message is a consequence of the card stopping to work for some reason.</div><div>Mar 23 22:42:04 voyage kernel: [ 2569.011358] ath reset</div>
<div><div>Mar 23 22:42:04 voyage kernel: [ 2569.019484] ath: Failed to stop TX DMA!</div><div>Mar 23 22:42:04 voyage kernel: [ 2569.423631] ath reset</div><div>Mar 23 22:42:04 voyage kernel: [ 2569.424602] ath: Failed to stop TX DMA!</div>
<div>Mar 23 22:42:04 voyage kernel: [ 2569.453000] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x42000020 DMADBG_7=0x00006040</div><div>Mar 23 22:42:04 voyage kernel: [ 2569.453101] ath: Could not stop RX, we could be confusing the DMA engine when we start RX up</div>
</div><div><br></div><div>Can this be a bug in the voyage kernel? If so, is there a patch I can apply? It will be really useful if anyone can offer insights into this.</div><div><br></div><div>Thank you</div><div>Srinivas</div>