ATH9K_TXKEYIX_INVALID
ATH9K_TXKEYIX_INVALID, /* no encryption */
(keyIx != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0);
(keyIx != ATH9K_TXKEYIX_INVALID ? SM(keyIx, AR_DestIdx) : 0) |
keyix = ATH9K_TXKEYIX_INVALID;