From: sunil.kovv...@gmail.com Date: Thu, 1 Dec 2016 18:24:28 +0530 > From: Sunil Goutham <sgout...@cavium.com> > > Transmit queue timeout issue is seen in two cases > - Due to a race condition btw setting stop_queue at xmit() > and checking for stopped_queue in NAPI poll routine, at times > transmission from a SQ comes to a halt. This is fixed > by using barriers and also added a check for SQ free descriptors, > incase SQ is stopped and there are only CQE_RX i.e no CQE_TX. > - Contrary to an assumption, a HW errata where HW doesn't stop transmission > even though there are not enough CQEs available for a CQE_TX is > not fixed in T88 pass 2.x. This results in a Qset error with > 'CQ_WR_FULL' stalling transmission. This is fixed by adjusting > RXQ's RED levels for CQ level such that there is always enough > space left for CQE_TXs. > > Signed-off-by: Sunil Goutham <sgout...@cavium.com> > --- > v2: As suggested by David, replaced netif_tx_start_queue with > netif_tx_wake_queue.
Applied, thanks.
