On Wed, Jul 30, 2014 at 08:59:33PM +0200, Christian Lamparter wrote: > If you have disabled rx-decrypt logic of ath10k, then why isn't _aesni_dec1 > or aes_decrypt listed in the perf top result? I think they should be. Have you > removed them from the "perf top results" or are they really absent > altogether? > > Because, from this perf result, it looks like your CPU is not burden by the > incoming RX at all?! Instead it is busy with the encryption of frames > it will be transmitting (in case of tcp, this could be tcp acks). Keep in mind that this is CCMP, i.e., AES in CCM (Counter with CBC-MAC) mode. The CCM mode uses only the block cipher encryption function, i.e., you won't be seeing aes_decrypt or _aesni_dec1 for this even on the RX path (AES encryption operations are used to generate the key stream blocks for CCM decryption). -- Jouni Malinen PGP id EFC895FA -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
