Re: [PATCH 1/3] net: fs_enet: merge NAPI RX and NAPI TX
From: Eric Dumazet <hidden>
Date: 2016-08-24 13:15:53
Also in:
linuxppc-dev, lkml
On Wed, 2016-08-24 at 06:07 -0700, Eric Dumazet wrote:
I am afraid you could live lock here on SMP. You should make sure you do not loop forever, not assuming cpu is faster than NIC.
You are protected by the tx_lock spinlock, but this is fragile as you could very well remove this spinlock in the future to get lockless transmit, like many other drivers.