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The acomp API allows to send requests with a NULL destination buffer. In this case, the algorithm implementation needs to allocate the destination scatter list, perform the operation and return the buffer to the user. For decompression, data is likely to expand and be bigger than the allocated buffer. This implements a re-submission mechanism for decompression requests that is triggered if the destination buffer, allocated by the driver, is not sufficiently big to store the output from decompression. If an overflow is detected when processing the callback for a decompression request with a NULL destination buffer, a workqueue is scheduled. This allocates a new scatter list of size CRYPTO_ACOMP_DST_MAX, now 128KB, creates a new firmware scatter list and resubmits the job to the hardware accelerator. Suggested-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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| qat_4xxx | ||
| qat_c3xxx | ||
| qat_c3xxxvf | ||
| qat_c62x | ||
| qat_c62xvf | ||
| qat_common | ||
| qat_dh895xcc | ||
| qat_dh895xccvf | ||
| Kconfig | ||
| Makefile | ||