ethernet/qualcomm/qca_spi.c

273 	if (qca->txr.skb[qca->txr.head] == NULL)
286 	while (qca->txr.skb[qca->txr.head]) {
287 		pkt_len = qca->txr.skb[qca->txr.head]->len + QCASPI_HW_PKT_LEN;
295 		if (qcaspi_tx_frame(qca, qca->txr.skb[qca->txr.head]) == -1) {
302 		n_stats->tx_bytes += qca->txr.skb[qca->txr.head]->len;
310 		dev_kfree_skb(qca->txr.skb[qca->txr.head]);
311 		qca->txr.skb[qca->txr.head] = NULL;
312 		qca->txr.size -= pkt_len;
313 		new_head = qca->txr.head + 1;
314 		if (new_head >= qca->txr.count)
316 		qca->txr.head = new_head;
445 qcaspi_tx_ring_has_space(struct tx_ring *txr)
447 	if (txr->skb[txr->tail])
450 	return (txr->size + QCAFRM_MAX_LEN < QCASPI_HW_BUF_LEN) ? 1 : 0;
467 		if (qca->txr.skb[i]) {
468 			dev_kfree_skb(qca->txr.skb[i]);
469 			qca->txr.skb[i] = NULL;
473 	qca->txr.tail = 0;
474 	qca->txr.head = 0;
475 	qca->txr.size = 0;
583 		    !qca->txr.skb[qca->txr.head])
590 			   qca->txr.skb[qca->txr.head]);
737 	if (qca->txr.skb[qca->txr.tail]) {
771 	qca->txr.size += skb->len + QCASPI_HW_PKT_LEN;
773 	new_tail = qca->txr.tail + 1;
774 	if (new_tail >= qca->txr.count)
777 	qca->txr.skb[qca->txr.tail] = skb;
778 	qca->txr.tail = new_tail;
780 	if (!qcaspi_tx_ring_has_space(&qca->txr)) {
879 	memset(&qca->txr, 0, sizeof(qca->txr));
880 	qca->txr.count = QCASPI_TX_RING_MAX_LEN;