• Vasanthakumar Thiagarajan's avatar
    ath10k: rebuild crypto header in rx data frames · 7eccb738
    Vasanthakumar Thiagarajan authored
    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: default avatarManikanta Pubbisetty <mpubbise@qti.qualcomm.com>
    Signed-off-by: default avatarVasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
    Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
    7eccb738
rx_desc.h 39.7 KB