[v3] ath10k: rebuild crypto header in rx data frames

Sebastian Gottschall s.gottschall at dd-wrt.com
Mon Oct 30 02:32:12 PDT 2017

will check it tomorrow including gcmp-256, ccmp-256. was out for weekend :-)

Am 30.10.2017 um 09:39 schrieb Kalle Valo:
> Kalle Valo <kvalo at qca.qualcomm.com> wrote:
>> Rx data frames notified through HTT_T2H_MSG_TYPE_RX_IND and
>> HTT_T2H_MSG_TYPE_RX_FRAG_IND expect PN/TSC check to be done
>> on host (mac80211) rather than firmware. Rebuild cipher header
>> in every received data frames (that are notified through those
>> HTT interfaces) from the rx_hdr_status tlv available in the
>> rx descriptor of the first msdu. Skip setting RX_FLAG_IV_STRIPPED
>> flag for the packets which requires mac80211 PN/TSC check support
>> and set appropriate RX_FLAG for stripped crypto tail. Hw QCA988X,
>> QCA9887, QCA99X0, QCA9984, QCA9888 and QCA4019 currently need the
>> rebuilding of cipher header to perform PN/TSC check for replay
>> attack.
>> Please note that removing crypto tail for CCMP-256, GCMP and GCMP-256 ciphers
>> in raw mode needs to be fixed. Since Rx with these ciphers in raw
>> mode does not work in the current form even without this patch and
>> removing crypto tail for these chipers needs clean up, raw mode related
>> issues in CCMP-256, GCMP and GCMP-256 can be addressed in follow up
>> patches.
>> Tested-by: Manikanta Pubbisetty <mpubbise at qti.qualcomm.com>
>> Signed-off-by: Vasanthakumar Thiagarajan <vthiagar at qti.qualcomm.com>
>> Signed-off-by: Kalle Valo <kvalo at qca.qualcomm.com>
> Patch applied to ath-current branch of ath.git, thanks.
> 7eccb738fce5 ath10k: rebuild crypto header in rx data frames

Mit freundlichen Grüssen / Regards

Sebastian Gottschall / CTO

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