intel/igbvf/netdev.c

412  * @tx_ring: ring being initialized
417 			     struct igbvf_ring *tx_ring)
422 	size = sizeof(struct igbvf_buffer) * tx_ring->count;
423 	tx_ring->buffer_info = vzalloc(size);
424 	if (!tx_ring->buffer_info)
428 	tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc);
429 	tx_ring->size = ALIGN(tx_ring->size, 4096);
431 	tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size,
432 					   &tx_ring->dma, GFP_KERNEL);
433 	if (!tx_ring->desc)
436 	tx_ring->adapter = adapter;
437 	tx_ring->next_to_use = 0;
438 	tx_ring->next_to_clean = 0;
442 	vfree(tx_ring->buffer_info);
494  * @tx_ring: ring to be cleaned
496 static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring)
498 	struct igbvf_adapter *adapter = tx_ring->adapter;
503 	if (!tx_ring->buffer_info)
507 	for (i = 0; i < tx_ring->count; i++) {
508 		buffer_info = &tx_ring->buffer_info[i];
512 	size = sizeof(struct igbvf_buffer) * tx_ring->count;
513 	memset(tx_ring->buffer_info, 0, size);
516 	memset(tx_ring->desc, 0, tx_ring->size);
518 	tx_ring->next_to_use = 0;
519 	tx_ring->next_to_clean = 0;
521 	writel(0, adapter->hw.hw_addr + tx_ring->head);
522 	writel(0, adapter->hw.hw_addr + tx_ring->tail);
527  * @tx_ring: ring to free resources from
531 void igbvf_free_tx_resources(struct igbvf_ring *tx_ring)
533 	struct pci_dev *pdev = tx_ring->adapter->pdev;
535 	igbvf_clean_tx_ring(tx_ring);
537 	vfree(tx_ring->buffer_info);
538 	tx_ring->buffer_info = NULL;
540 	dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc,
541 			  tx_ring->dma);
543 	tx_ring->desc = NULL;
717 	adapter->tx_ring->itr_range =
719 					 adapter->tx_ring->itr_val,
725 	    adapter->tx_ring->itr_range == lowest_latency)
726 		adapter->tx_ring->itr_range = low_latency;
728 	new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range);
730 	if (new_itr != adapter->tx_ring->itr_val) {
731 		u32 current_itr = adapter->tx_ring->itr_val;
739 		adapter->tx_ring->itr_val = new_itr;
741 		adapter->tx_ring->set_itr = 1;
768  * @tx_ring: ring structure to clean descriptors from
772 static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring)
774 	struct igbvf_adapter *adapter = tx_ring->adapter;
783 	i = tx_ring->next_to_clean;
784 	buffer_info = &tx_ring->buffer_info[i];
803 			tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
823 			if (i == tx_ring->count)
826 			buffer_info = &tx_ring->buffer_info[i];
830 	} while (count < tx_ring->count);
832 	tx_ring->next_to_clean = i;
835 	    igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) {
849 	return count < tx_ring->count;
874 	struct igbvf_ring *tx_ring = adapter->tx_ring;
876 	if (tx_ring->set_itr) {
877 		writel(tx_ring->itr_val,
878 		       adapter->hw.hw_addr + tx_ring->itr_register);
879 		adapter->tx_ring->set_itr = 0;
888 	if (!igbvf_clean_tx_irq(tx_ring))
890 		ew32(EICS, tx_ring->eims_value);
892 		ew32(EIMS, tx_ring->eims_value);
962 		adapter->tx_ring[tx_queue].eims_value = BIT(msix_vector);
978 	struct igbvf_ring *tx_ring = adapter->tx_ring;
985 	adapter->eims_enable_mask |= tx_ring->eims_value;
986 	writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register);
1055 		sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name);
1058 		memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
1063 			  igbvf_intr_msix_tx, 0, adapter->tx_ring->name,
1068 	adapter->tx_ring->itr_register = E1000_EITR(vector);
1069 	adapter->tx_ring->itr_val = adapter->current_itr;
1105 	adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL);
1106 	if (!adapter->tx_ring)
1111 		kfree(adapter->tx_ring);
1291 	struct igbvf_ring *tx_ring = adapter->tx_ring;
1302 	ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc));
1303 	tdba = tx_ring->dma;
1308 	tx_ring->head = E1000_TDH(0);
1309 	tx_ring->tail = E1000_TDT(0);
1604 	igbvf_clean_tx_ring(adapter->tx_ring);
1719 	err = igbvf_setup_tx_resources(adapter, adapter->tx_ring);
1758 	igbvf_free_tx_resources(adapter->tx_ring);
1785 	igbvf_free_tx_resources(adapter->tx_ring);
1919 	struct igbvf_ring *tx_ring = adapter->tx_ring;
1949 		tx_pending = (igbvf_desc_unused(tx_ring) + 1 <
1950 			      tx_ring->count);
1978 static void igbvf_tx_ctxtdesc(struct igbvf_ring *tx_ring, u32 vlan_macip_lens,
1983 	u16 i = tx_ring->next_to_use;
1985 	context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i);
1986 	buffer_info = &tx_ring->buffer_info[i];
1989 	tx_ring->next_to_use = (i < tx_ring->count) ? i : 0;
2003 static int igbvf_tso(struct igbvf_ring *tx_ring,
2072 	igbvf_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx);
2077 static bool igbvf_tx_csum(struct igbvf_ring *tx_ring, struct sk_buff *skb,
2114 	igbvf_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, 0);
2123 	if (igbvf_desc_unused(adapter->tx_ring) >= size)
2135 	if (igbvf_desc_unused(adapter->tx_ring) < size)
2148 				   struct igbvf_ring *tx_ring,
2157 	i = tx_ring->next_to_use;
2159 	buffer_info = &tx_ring->buffer_info[i];
2175 		if (i == tx_ring->count)
2181 		buffer_info = &tx_ring->buffer_info[i];
2192 	tx_ring->buffer_info[i].skb = skb;
2210 			i += tx_ring->count;
2212 		buffer_info = &tx_ring->buffer_info[i];
2220 				      struct igbvf_ring *tx_ring,
2252 	i = tx_ring->next_to_use;
2254 		buffer_info = &tx_ring->buffer_info[i];
2255 		tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i);
2261 		if (i == tx_ring->count)
2273 	tx_ring->buffer_info[first].next_to_watch = tx_desc;
2274 	tx_ring->next_to_use = i;
2275 	writel(i, adapter->hw.hw_addr + tx_ring->tail);
2280 					     struct igbvf_ring *tx_ring)
2319 	first = tx_ring->next_to_use;
2321 	tso = igbvf_tso(tx_ring, skb, tx_flags, &hdr_len);
2329 	else if (igbvf_tx_csum(tx_ring, skb, tx_flags, protocol) &&
2336 	count = igbvf_tx_map_adv(adapter, tx_ring, skb);
2339 		igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count,
2345 		tx_ring->buffer_info[first].time_stamp = 0;
2346 		tx_ring->next_to_use = first;
2356 	struct igbvf_ring *tx_ring;
2363 	tx_ring = &adapter->tx_ring[0];
2365 	return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring);
2514 	igbvf_clean_tx_irq(adapter->tx_ring);
2857 	adapter->tx_ring->count = 1024;
2883 	kfree(adapter->tx_ring);
2931 	kfree(adapter->tx_ring);