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Date: Mon, 29 Jul 2019 17:01:58 +0200 From: Andrew Lunn <andrew@...n.ch> To: Benjamin Beckmeyer <beb@...-engel.de> Cc: netdev@...r.kernel.org Subject: Re: DSA Rate Limiting in 88E6390 On Mon, Jul 29, 2019 at 12:30:20PM +0200, Benjamin Beckmeyer wrote: > Hi all, > is there a possibility to set the rate limiting for the 6390 with linux tools? > I've seen that the driver will init all to zero, so rate limiting is disabled, > but there is no solution for it in the ip tool? > > The only thing I found for rate limiting is the tc tool, but I guess this is > only a software solution? Hi Benjamin In Linux, we accelerate the software solution by offloading it to the hardware. So TC is what you need here. > Furthermore, does exist a table or a tutorial which functions DSA supports? > The background is that we are using the DSDT driver (in future maybe the UMSD > driver) but we would like to switch to the in kernel DSA entirely. And our > software is using some of the DSDT functions, so I have to find an > alternative to these functions. The DSA framework supports offloading TC. There was some patches a while back adding ingress rate limiting to one of the DSA drivers, via TC. I forget which, and i don't think they have been merged yet. If you can find the patchset, it should give you a good idea how you can implement support in the mv88e6xxx driver. Andrew
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