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mbedtls: esp32s2: check and reallocate output buffer if its from non-DMA range

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Earlier check was for only input buffer but it is quite likely to have
output buffer also from non-DMA memory range and hence requirement to
reallocate and then copy data from AES engine.
This commit is contained in:
Mahavir Jain 2020-04-21 15:27:53 +05:30 committed by bot
parent 18c1838587
commit 0d208aabab
1 changed files with 4 additions and 0 deletions
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components/mbedtls/port/esp32s2/aes.c
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@ -448,6 +448,10 @@ static int esp_aes_process_dma(esp_aes_context *ctx, const unsigned char *input,
input_needs_realloc = true;
}
if (!esp_ptr_dma_ext_capable(output) && !esp_ptr_dma_capable(output)) {
output_needs_realloc = true;
}
/* If either input or output is unaccessible to the DMA then they need to be reallocated */
if (input_needs_realloc || output_needs_realloc) {
return esp_aes_process_dma_ext_ram(ctx, input, output, len, stream_out, input_needs_realloc, output_needs_realloc);