[RFC] net/i40e: enable multi-queue Rx interrupt for VF
diff mbox series

Message ID 20190830021250.2403-1-lunyuanx.cui@intel.com
State Superseded, archived
Headers show
Series
  • [RFC] net/i40e: enable multi-queue Rx interrupt for VF
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Context Check Description
ci/checkpatch warning coding style issues
ci/Intel-compilation success Compilation OK

Commit Message

Lunyuan Cui Aug. 30, 2019, 2:12 a.m. UTC
This patch enable VF can support multi-queue Rx interrupt.

Current implementation is that only one Rx queue can support interrupt,
because all queues are mapped in the same vector id.

What this patch fixes is mapping different interrupt vectors to each queue.
In addition, the maximum number of interrupt vector on i40evf is 4,
so there's a limit on the interrupt vector.

Signed-off-by: lunyuan.cui <lunyuanx.cui@intel.com>
---
 drivers/net/i40e/i40e_ethdev_vf.c | 80 ++++++++++++++++++++++---------
 1 file changed, 57 insertions(+), 23 deletions(-)

Patch
diff mbox series

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 308fb9835..9d1af3804 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -645,6 +645,8 @@  i40evf_configure_vsi_queues(struct rte_eth_dev *dev)
 	return ret;
 }
 
+#define RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF	4
+
 static int
 i40evf_config_irq_map(struct rte_eth_dev *dev)
 {
@@ -655,38 +657,70 @@  i40evf_config_irq_map(struct rte_eth_dev *dev)
 	struct virtchnl_irq_map_info *map_info;
 	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 	struct rte_intr_handle *intr_handle = &pci_dev->intr_handle;
+	uint16_t nb_msix = RTE_LIBRTE_I40E_QUEUE_NUM_PER_VF;
 	uint32_t vector_id;
 	int i, err;
 
 	if (dev->data->dev_conf.intr_conf.rxq != 0 &&
-	    rte_intr_allow_others(intr_handle))
+	    rte_intr_allow_others(intr_handle)) {
+		nb_msix = RTE_MIN(intr_handle->nb_efd, nb_msix);
 		vector_id = I40E_RX_VEC_START;
-	else
+	} else
 		vector_id = I40E_MISC_VEC_ID;
 
-	map_info = (struct virtchnl_irq_map_info *)cmd_buffer;
-	map_info->num_vectors = 1;
-	map_info->vecmap[0].rxitr_idx = I40E_ITR_INDEX_DEFAULT;
-	map_info->vecmap[0].vsi_id = vf->vsi_res->vsi_id;
-	/* Alway use default dynamic MSIX interrupt */
-	map_info->vecmap[0].vector_id = vector_id;
-	/* Don't map any tx queue */
-	map_info->vecmap[0].txq_map = 0;
-	map_info->vecmap[0].rxq_map = 0;
-	for (i = 0; i < dev->data->nb_rx_queues; i++) {
-		map_info->vecmap[0].rxq_map |= 1 << i;
-		if (rte_intr_dp_is_en(intr_handle))
+	if (rte_intr_dp_is_en(intr_handle)) {
+		for (i = 0; i < dev->data->nb_rx_queues; i++) {
+			memset(cmd_buffer, 0, sizeof(cmd_buffer));
+			map_info = (struct virtchnl_irq_map_info *)cmd_buffer;
+			map_info->num_vectors = 1;
+			map_info->vecmap[0].rxitr_idx = I40E_ITR_INDEX_DEFAULT;
+			map_info->vecmap[0].vsi_id = vf->vsi_res->vsi_id;
+			/* Alway use default dynamic MSIX interrupt */
+			map_info->vecmap[0].vector_id = vector_id;
+			/* Don't map any tx queue */
+			map_info->vecmap[0].txq_map = 0;
+			map_info->vecmap[0].rxq_map = 0;
+			map_info->vecmap[0].rxq_map |= 1 << i;
+
 			intr_handle->intr_vec[i] = vector_id;
-	}
 
-	args.ops = VIRTCHNL_OP_CONFIG_IRQ_MAP;
-	args.in_args = (u8 *)cmd_buffer;
-	args.in_args_size = sizeof(cmd_buffer);
-	args.out_buffer = vf->aq_resp;
-	args.out_size = I40E_AQ_BUF_SZ;
-	err = i40evf_execute_vf_cmd(dev, &args);
-	if (err)
-		PMD_DRV_LOG(ERR, "fail to execute command OP_ENABLE_QUEUES");
+			args.ops = VIRTCHNL_OP_CONFIG_IRQ_MAP;
+			args.in_args = (u8 *)cmd_buffer;
+			args.in_args_size = sizeof(cmd_buffer);
+			args.out_buffer = vf->aq_resp;
+			args.out_size = I40E_AQ_BUF_SZ;
+			err = i40evf_execute_vf_cmd(dev, &args);
+			if (err) {
+				PMD_DRV_LOG(ERR, "fail to execute command "
+					"OP_ADD_ETHER_ADDRESS");
+				return err;
+			}
+			if ((vector_id != I40E_MISC_VEC_ID) && (nb_msix > 1))
+				vector_id++;
+			nb_msix--;
+	} else {
+		map_info = (struct virtchnl_irq_map_info *)cmd_buffer;
+		map_info->num_vectors = 1;
+		map_info->vecmap[0].rxitr_idx = I40E_ITR_INDEX_DEFAULT;
+		map_info->vecmap[0].vsi_id = vf->vsi_res->vsi_id;
+		/* Alway use default dynamic MSIX interrupt */
+		map_info->vecmap[0].vector_id = vector_id;
+		/* Don't map any tx queue */
+		map_info->vecmap[0].txq_map = 0;
+		map_info->vecmap[0].rxq_map = 0;
+		for (i = 0; i < dev->data->nb_rx_queues; i++)
+			map_info->vecmap[0].rxq_map |= 1 << i;
+
+		args.ops = VIRTCHNL_OP_CONFIG_IRQ_MAP;
+		args.in_args = (u8 *)cmd_buffer;
+		args.in_args_size = sizeof(cmd_buffer);
+		args.out_buffer = vf->aq_resp;
+		args.out_size = I40E_AQ_BUF_SZ;
+		err = i40evf_execute_vf_cmd(dev, &args);
+		if (err)
+			PMD_DRV_LOG(ERR,
+				"fail to execute command OP_ENABLE_QUEUES");
+	}
 
 	return err;
 }