testapp: return error on HW failure

[mythi]

in our CI setup for HW testing, we want QAT Engine to return an error code if the HW fails. Currently, we build a custom engine, with

 --disable-qat_sw \
 --with-qat_engine_id=qathwtest && \

There's an OpenSSL SW fallback controlled by fallback_to_openssl = 1; but toggling these to 0 still does not make QAT Engine/ testapp to return 1.

This issue is to get a build setup where HW failures can be reliably tested.

[venkatesh6911]

Thanks for reporting. We will look into this.

[mythi]

thanks

one clarification, this can be an "opt-in" setting. currently we just patch to add return ret; after this line

QAT_Engine/e_qat.c

Line 1146 in ceb9d4a

fprintf(stderr, "QAT_HW device not available & QAT_SW not enabled. Using OpenSSL_SW!\n");