tx_sdesc
struct tx_sdesc *sdesc; /* KVA of software descriptor ring */
txq->sdesc = kmem_zalloc(sizeof (struct tx_sdesc) * eq->cap, KM_SLEEP);
struct tx_sdesc *sd;
kmem_free(txq->sdesc, sizeof (struct tx_sdesc) * eq->cap);
struct tx_sdesc *txsd;
struct tx_sdesc *txsd;
struct tx_sdesc *txsd;
const struct tx_sdesc txsd = {
struct tx_sdesc *txsd = &txq->sdesc[eq->cidx];