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

Kalle Valo kvalo at qca.qualcomm.com
Fri Oct 27 08:44:44 PDT 2017

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>

Any comments or feedback about this? I'm hoping to apply this during the
weekend so that it will make it to v4.14 in time. So if there are any issues
with this patch please let me know ASAP.



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