ath/ath9k/recv.c

37 static void ath_rx_buf_link(struct ath_softc *sc, struct ath_rxbuf *bf,
45 	ds = bf->bf_desc;
47 	ds->ds_data = bf->bf_buf_addr;
50 	skb = bf->bf_mpdu;
64 		*sc->rx.rxlink = bf->bf_daddr;
66 		ath9k_hw_putrxbuf(ah, bf->bf_daddr);
71 static void ath_rx_buf_relink(struct ath_softc *sc, struct ath_rxbuf *bf,
77 	sc->rx.buf_hold = bf;
116 	struct ath_rxbuf *bf;
122 	bf = list_first_entry(&sc->rx.rxbuf, struct ath_rxbuf, list);
123 	list_del_init(&bf->list);
125 	skb = bf->bf_mpdu;
128 	dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
131 	SKB_CB_ATHBUF(skb) = bf;
132 	ath9k_hw_addrxbuf_edma(ah, bf->bf_buf_addr, qtype);
142 	struct ath_rxbuf *bf, *tbf;
149 	list_for_each_entry_safe(bf, tbf, &sc->rx.rxbuf, list)
158 	struct ath_rxbuf *bf;
165 		bf = SKB_CB_ATHBUF(skb);
166 		BUG_ON(!bf);
167 		list_add_tail(&bf->list, &sc->rx.rxbuf);
175 	struct ath_rxbuf *bf;
180 	list_for_each_entry(bf, &sc->rx.rxbuf, list) {
181 		if (bf->bf_mpdu) {
182 			dma_unmap_single(sc->dev, bf->bf_buf_addr,
185 			dev_kfree_skb_any(bf->bf_mpdu);
186 			bf->bf_buf_addr = 0;
187 			bf->bf_mpdu = NULL;
203 	struct ath_rxbuf *bf;
216 	bf = devm_kzalloc(sc->dev, size, GFP_KERNEL);
217 	if (!bf)
222 	for (i = 0; i < nbufs; i++, bf++) {
230 		bf->bf_mpdu = skb;
232 		bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
236 						bf->bf_buf_addr))) {
238 				bf->bf_mpdu = NULL;
239 				bf->bf_buf_addr = 0;
246 		list_add_tail(&bf->list, &sc->rx.rxbuf);
275 	struct ath_rxbuf *bf;
300 	list_for_each_entry(bf, &sc->rx.rxbuf, list) {
308 		bf->bf_mpdu = skb;
309 		bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
313 					       bf->bf_buf_addr))) {
315 			bf->bf_mpdu = NULL;
316 			bf->bf_buf_addr = 0;
336 	struct ath_rxbuf *bf;
343 	list_for_each_entry(bf, &sc->rx.rxbuf, list) {
344 		skb = bf->bf_mpdu;
346 			dma_unmap_single(sc->dev, bf->bf_buf_addr,
350 			bf->bf_buf_addr = 0;
351 			bf->bf_mpdu = NULL;
444 	struct ath_rxbuf *bf, *tbf;
456 	list_for_each_entry_safe(bf, tbf, &sc->rx.rxbuf, list) {
457 		ath_rx_buf_link(sc, bf, false);
464 	bf = list_first_entry(&sc->rx.rxbuf, struct ath_rxbuf, list);
465 	ath9k_hw_putrxbuf(ah, bf->bf_daddr);
636 	struct ath_rxbuf *bf;
643 	bf = SKB_CB_ATHBUF(skb);
644 	BUG_ON(!bf);
646 	dma_sync_single_for_cpu(sc->dev, bf->bf_buf_addr,
652 		dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
660 		list_add_tail(&bf->list, &sc->rx.rxbuf);
665 			bf = SKB_CB_ATHBUF(skb);
666 			BUG_ON(!bf);
669 			list_add_tail(&bf->list, &sc->rx.rxbuf);
673 		bf = NULL;
676 	*dest = bf;
684 	struct ath_rxbuf *bf = NULL;
686 	while (ath_edma_get_buffers(sc, qtype, rs, &bf)) {
687 		if (!bf)
690 		return bf;
701 	struct ath_rxbuf *bf;
709 	bf = list_first_entry(&sc->rx.rxbuf, struct ath_rxbuf, list);
710 	if (bf == sc->rx.buf_hold)
713 	ds = bf->bf_desc;
733 		if (list_is_last(&bf->list, &sc->rx.rxbuf)) {
738 		tbf = list_entry(bf->list.next, struct ath_rxbuf, list);
771 	list_del(&bf->list);
772 	if (!bf->bf_mpdu)
773 		return bf;
780 	dma_sync_single_for_cpu(sc->dev, bf->bf_buf_addr,
784 	return bf;
1062 	struct ath_rxbuf *bf;
1093 			bf = ath_edma_get_next_rx_buf(sc, &rs, qtype);
1095 			bf = ath_get_next_rx_buf(sc, &rs);
1097 		if (!bf)
1100 		skb = bf->bf_mpdu;
1143 		dma_unmap_single(sc->dev, bf->bf_buf_addr,
1146 		bf->bf_mpdu = requeue_skb;
1147 		bf->bf_buf_addr = new_buf_addr;
1220 		list_add_tail(&bf->list, &sc->rx.rxbuf);
1223 			ath_rx_buf_relink(sc, bf, flush);