How to support Lz4 compression with CRC32？

[bin1guo]

I note that QAT HW support Lz4 algorithm compression acceleration with CRC32. But in qatzip, the CRC32 is limited by deflate.

is there any method to support Lz4+CRC32 using qatzip? thanks

[daweiq]

LZ4 using xxhash as the checksum, therefore QAT HW only return xxhash to each LZ4 compression request.
To add LZ4+CRC32 using QATzip, you can adding crc32() call from zlib for each LZ4 block, but you have to find a way to return crc32 back to caller because it's not the included in the LZ4 footer as the standard checksum.