diff mbox series

net/i40e: enable multi-queue Rx interrupt for VF

Message ID 20191203114339.43719-1-lunyuanx.cui@intel.com (mailing list archive)
State Accepted, archived
Delegated to: xiaolong ye
Headers
Series net/i40e: enable multi-queue Rx interrupt for VF |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-compilation success Compile Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/travis-robot success Travis build: passed

Commit Message

Cui, LunyuanX Dec. 3, 2019, 11:43 a.m. UTC 
  Current implementation is that only one Rx queue can support interrupt,
because all queues are mapped in the same vector id in vfio_enable_msix().
So VF can not support multi-queue Rx interrupt in the interrupt mode.

In this patch, if the packet I/O interrupt on datapath is enabled
(rte_intr_dp_is_en(intr_handle) is true), we map different interrupt
vectors to each queue and send this map to PF.
After PF sets the map to the register,
all Rx queue interrupts will be received.

In addition, vector id should less than the maximum vector value.
When queue number is more than vector value,
we set up a loop of interrupt vectors map.

Signed-off-by: Lunyuan Cui <lunyuanx.cui@intel.com>
---
 drivers/net/i40e/i40e_ethdev_vf.c | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)

Comments

Qi Zhang Dec. 24, 2019, 1:40 a.m. UTC | #1 
> -----Original Message-----
> From: Cui, LunyuanX <lunyuanx.cui@intel.com>
> Sent: Tuesday, December 3, 2019 7:44 PM
> To: dev@dpdk.org
> Cc: Xing, Beilei <beilei.xing@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>;
> Yang, Qiming <qiming.yang@intel.com>; Cui, LunyuanX
> <lunyuanx.cui@intel.com>
> Subject: [PATCH] net/i40e: enable multi-queue Rx interrupt for VF
> 
> Current implementation is that only one Rx queue can support interrupt,
> because all queues are mapped in the same vector id in vfio_enable_msix().
> So VF can not support multi-queue Rx interrupt in the interrupt mode.
> 
> In this patch, if the packet I/O interrupt on datapath is enabled
> (rte_intr_dp_is_en(intr_handle) is true), we map different interrupt vectors to
> each queue and send this map to PF.
> After PF sets the map to the register,
> all Rx queue interrupts will be received.
> 
> In addition, vector id should less than the maximum vector value.
> When queue number is more than vector value, we set up a loop of interrupt
> vectors map.
> 
> Signed-off-by: Lunyuan Cui <lunyuanx.cui@intel.com>

Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Xiaolong Ye Dec. 24, 2019, 2:53 a.m. UTC | #2 
On 12/24, Zhang, Qi Z wrote:
>
>
>> -----Original Message-----
>> From: Cui, LunyuanX <lunyuanx.cui@intel.com>
>> Sent: Tuesday, December 3, 2019 7:44 PM
>> To: dev@dpdk.org
>> Cc: Xing, Beilei <beilei.xing@intel.com>; Zhang, Qi Z <qi.z.zhang@intel.com>;
>> Yang, Qiming <qiming.yang@intel.com>; Cui, LunyuanX
>> <lunyuanx.cui@intel.com>
>> Subject: [PATCH] net/i40e: enable multi-queue Rx interrupt for VF
>> 
>> Current implementation is that only one Rx queue can support interrupt,
>> because all queues are mapped in the same vector id in vfio_enable_msix().
>> So VF can not support multi-queue Rx interrupt in the interrupt mode.
>> 
>> In this patch, if the packet I/O interrupt on datapath is enabled
>> (rte_intr_dp_is_en(intr_handle) is true), we map different interrupt vectors to
>> each queue and send this map to PF.
>> After PF sets the map to the register,
>> all Rx queue interrupts will be received.
>> 
>> In addition, vector id should less than the maximum vector value.
>> When queue number is more than vector value, we set up a loop of interrupt
>> vectors map.
>> 
>> Signed-off-by: Lunyuan Cui <lunyuanx.cui@intel.com>
>
>Acked-by: Qi Zhang <qi.z.zhang@intel.com>
>


Applied to dpdk-next-net-intel, Thanks.
diff mbox series

Patch

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 5dba0928b..b08583c03 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -651,12 +651,13 @@  i40evf_config_irq_map(struct rte_eth_dev *dev)
 	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
 	struct vf_cmd_info args;
 	uint8_t cmd_buffer[sizeof(struct virtchnl_irq_map_info) + \
-		sizeof(struct virtchnl_vector_map)];
+		sizeof(struct virtchnl_vector_map) * dev->data->nb_rx_queues];
 	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;
 	uint32_t vector_id;
 	int i, err;
+	uint16_t nb_msix;
 
 	if (dev->data->dev_conf.intr_conf.rxq != 0 &&
 	    rte_intr_allow_others(intr_handle))
@@ -664,19 +665,25 @@  i40evf_config_irq_map(struct rte_eth_dev *dev)
 	else
 		vector_id = I40E_MISC_VEC_ID;
 
+	nb_msix = RTE_MIN(vf->vf_res->max_vectors,
+			intr_handle->nb_efd);
+
 	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->num_vectors = dev->data->nb_rx_queues;
 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
-		map_info->vecmap[0].rxq_map |= 1 << i;
+		map_info->vecmap[i].rxitr_idx = I40E_ITR_INDEX_DEFAULT;
+		map_info->vecmap[i].vsi_id = vf->vsi_res->vsi_id;
+		/* Alway use default dynamic MSIX interrupt */
+		map_info->vecmap[i].vector_id = vector_id;
+		/* Don't map any tx queue */
+		map_info->vecmap[i].txq_map = 0;
+		map_info->vecmap[i].rxq_map = 1 << i;
 		if (rte_intr_dp_is_en(intr_handle))
 			intr_handle->intr_vec[i] = vector_id;
+		if (vector_id > I40E_MISC_VEC_ID)
+			vector_id++;
+		if (vector_id > nb_msix)
+			vector_id = I40E_RX_VEC_START;
 	}
 
 	args.ops = VIRTCHNL_OP_CONFIG_IRQ_MAP;