• Alex Elder's avatar
    net: ipa: remove command info pool · 8797972a
    Alex Elder authored
    The ipa_cmd_info structure now contains only one field, and it's an
    enumerated type whose values all fit in 8 bits.  Currently we'll
    never use more than 8 TREs in a command transaction, and we can
    represent that number of command opcodes in the same space as a 64
    bit pointer to an ipa_cmd_info structure.
    
    Define IPA_COMMAND_TRANS_TRE_MAX as the maximum number of TREs that
    can be in a command transaction.  Replace the info pointer in a
    transaction with a fixed-size array named cmd_opcode[] of that many
    bytes.  Store the opcode in this array when adding a command TRE to
    a transaction, as was done previously for the info array.  This
    makes the ipa_cmd_info unused, so get rid of it.
    
    When committing an immediate command transaction, use the channel's
    Boolean command flag to determine whether to fill in the opcode,
    which will be taken (as before) from the array in the transaction.
    
    This makes the command info pool unnecessary, so get rid of it.
    Signed-off-by: default avatarAlex Elder <elder@linaro.org>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    8797972a
ipa_cmd.h 5.38 KB