intel/fm10k/fm10k_netdev.c

11  * @tx_ring:    tx descriptor ring (for a specific queue) to setup
15 int fm10k_setup_tx_resources(struct fm10k_ring *tx_ring)
17 	struct device *dev = tx_ring->dev;
20 	size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
22 	tx_ring->tx_buffer = vzalloc(size);
23 	if (!tx_ring->tx_buffer)
26 	u64_stats_init(&tx_ring->syncp);
29 	tx_ring->size = tx_ring->count * sizeof(struct fm10k_tx_desc);
30 	tx_ring->size = ALIGN(tx_ring->size, 4096);
32 	tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size,
33 					   &tx_ring->dma, GFP_KERNEL);
34 	if (!tx_ring->desc)
40 	vfree(tx_ring->tx_buffer);
41 	tx_ring->tx_buffer = NULL;
60 		err = fm10k_setup_tx_resources(interface->tx_ring[i]);
73 		fm10k_free_tx_resources(interface->tx_ring[i]);
168  * @tx_ring: ring to be cleaned
170 static void fm10k_clean_tx_ring(struct fm10k_ring *tx_ring)
176 	if (!tx_ring->tx_buffer)
180 	for (i = 0; i < tx_ring->count; i++) {
181 		struct fm10k_tx_buffer *tx_buffer = &tx_ring->tx_buffer[i];
183 		fm10k_unmap_and_free_tx_resource(tx_ring, tx_buffer);
187 	netdev_tx_reset_queue(txring_txq(tx_ring));
189 	size = sizeof(struct fm10k_tx_buffer) * tx_ring->count;
190 	memset(tx_ring->tx_buffer, 0, size);
193 	memset(tx_ring->desc, 0, tx_ring->size);
198  * @tx_ring: Tx descriptor ring for a specific queue
202 void fm10k_free_tx_resources(struct fm10k_ring *tx_ring)
204 	fm10k_clean_tx_ring(tx_ring);
206 	vfree(tx_ring->tx_buffer);
207 	tx_ring->tx_buffer = NULL;
210 	if (!tx_ring->desc)
213 	dma_free_coherent(tx_ring->dev, tx_ring->size,
214 			  tx_ring->desc, tx_ring->dma);
215 	tx_ring->desc = NULL;
227 		fm10k_clean_tx_ring(interface->tx_ring[i]);
241 		fm10k_free_tx_resources(interface->tx_ring[i]);
575 	err = fm10k_xmit_frame_ring(skb, interface->tx_ring[r_idx]);
588 	struct fm10k_ring *tx_ring;
596 	tx_ring = interface->tx_ring[txqueue];
597 	if (check_for_tx_hang(tx_ring) && fm10k_check_tx_hang(tx_ring))
1242 		ring = READ_ONCE(interface->tx_ring[i]);