It's in the zero-copy example. Of course your DMA buffers need to be cacheline-aligned, that's why the example uses custom pbufs, there should also not be any data/variables between the DMA buffers. And your invalidate() function needs to match addresses to cache lines. But all this is out of scope of lwIP, it's a "private secret" of the ethernet driver.
Dirk On Sat, Nov 2, 2019 at 9:02 AM goldsimon <goldsi...@gmx.de> wrote: > > > Am 2. November 2019 00:34:41 MEZ schrieb Toshiyasu Morita < > tmor...@autox.ai>: > >I was looking through the lwip and I found some obvious problems in the > >way > >invalidate_cpu_cache() is used. > > That function does not exist in lwIP. You're probably using some vendor > version? > > Regards, > Simon > > _______________________________________________ > lwip-users mailing list > lwip-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/lwip-users
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