IAVF_MAX_BUFFER_TXD
if (nr_frags < (IAVF_MAX_BUFFER_TXD - 1))
nr_frags -= IAVF_MAX_BUFFER_TXD - 2;
if (likely(count < IAVF_MAX_BUFFER_TXD))
return count != IAVF_MAX_BUFFER_TXD;