Stability of this Ethernet driver has been a long-standing issue, with
many people reporting frequent "transmit queue timeouts" and even
occasional crashes.
Disabling TSO in the driver helps with stability, although it is likely a
workaround and might not fix the issue completely.
There is a slight slowdown in forwarding performance for TCP packets
(75 kpps vs. 80 kpps with comparable CPU utilization), but this is still
enough to forward close to 1 Gbit/s of full-sized packets across multiple
flows.
Master is using a different ethernet driver, so this is not a backport.
Because of this different driver, the upcoming 21.02 release does not seem
to be affected by these stability issues.
Thanks to mrakotiq for the initial patch.
Fixes: FS#2628
Signed-off-by: Baptiste Jonglez <git@bitsofnetworks.org>
Signed-off-by: Tianling Shen <cnsztl@project-openwrt.eu.org>
a5a9fbbdc3