Messages in this thread | | | Subject | Re: [PATCH net] net: stmmac: Avoid DMA_CHAN_CONTROL write if no Split Header support | From | patchwork-bot+netdevbpf@kernel ... | Date | Mon, 29 Nov 2021 12:20:09 +0000 |
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Hello:
This patch was applied to netdev/net.git (master) by David S. Miller <davem@davemloft.net>:
On Fri, 26 Nov 2021 16:51:15 +0100 you wrote: > The driver assumes that split headers can be enabled/disabled without > stopping/starting the device, so it writes DMA_CHAN_CONTROL from > stmmac_set_features(). However, on my system (IP v5.10a without Split > Header support), simply writing DMA_CHAN_CONTROL when DMA is running > (for example, with the commands below) leads to a TX watchdog timeout. > > host$ socat TCP-LISTEN:1024,fork,reuseaddr - & > device$ ethtool -K eth0 tso off > device$ ethtool -K eth0 tso on > device$ dd if=/dev/zero bs=1M count=10 | socat - TCP4:host:1024 > <tx watchdog timeout> > > [...]
Here is the summary with links: - [net] net: stmmac: Avoid DMA_CHAN_CONTROL write if no Split Header support https://git.kernel.org/netdev/net/c/f8e7dfd6fdab
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