Hi, I'm trying to fix the inside-secure driver to pass all testmgr tests and I have one final issue remaining with the AEAD ciphers. As it was not clear at all what the exact problem was, I spent some time reverse engineering testmgr and I got the distinct impression that it is using scatter particles that cross page boundaries. On purpose, even. While the inside-secure driver is built on the premise that scatter particles are continuous in device space. As I can't think of any reason why you would want to scatter/gather other than to handle virtual-to-physical address translation ... In any case, this should affect all other other operations as well, but maybe those just got "lucky" by getting particles that were still contiguous in device space, despite the page crossing (to *really* verify this, you would have to fully randomize your page allocation!) Anyway, assuming that I *should* be able to handle particles that are *not* contiguous in device space, then there should probably already exist some function in the kernel API that converts a scatterlist with non-contiguous particles into a scatterlist with contiguous particles, taking into account the presence of an IOMMU? Considering pretty much every device driver would need to do that? Does anyone know which function(s) to use for that? Regards, Pascal van Leeuwen Silicon IP Architect, Multi-Protocol Engines @ Inside Secure
