[dpdk-dev] [PATCH v4] net/i40e: fix multi-queue Rx interrupt for VF

[Ye Xiaolong]

On 01/17, Lunyuan Cui wrote:
>The interrupt vector which bind to queues should not larger than

should not be larger than

>the max avaiable vertor. It will cause port start failed. This patch

s/avaiable/available
s/vertor/vector

>changed the judgement condition of the limited vector id. It can
>effectively avoid vector id out of range.
>
>Fixes: 5b8d2d89dd99 (net/i40e: enable multi-queue Rx interrupt for VF)

Should be

Fixes: 6a6cf5f88b4a ("net/i40e: enable multi-queue Rx interrupt for VF")


Applied to dpdk-next-net-intel with above fixes, Thanks.

>
>Signed-off-by: Lunyuan Cui <lunyuanx.cui at intel.com>
>---
>v4:
>- Change commit message
>
>v3:
>- Change commit message
>
>v2:
>- Change commit message
>---
> drivers/net/i40e/i40e_ethdev_vf.c | 6 +-----
> 1 file changed, 1 insertion(+), 5 deletions(-)
>
>diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
>index 479f8282c..d514e8991 100644
>--- a/drivers/net/i40e/i40e_ethdev_vf.c
>+++ b/drivers/net/i40e/i40e_ethdev_vf.c
>@@ -657,7 +657,6 @@ i40evf_config_irq_map(struct rte_eth_dev *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))
>@@ -665,9 +664,6 @@ 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 = dev->data->nb_rx_queues;
> 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
>@@ -682,7 +678,7 @@ i40evf_config_irq_map(struct rte_eth_dev *dev)
> 			intr_handle->intr_vec[i] = vector_id;
> 		if (vector_id > I40E_MISC_VEC_ID)
> 			vector_id++;
>-		if (vector_id > nb_msix)
>+		if (vector_id >= vf->vf_res->max_vectors)
> 			vector_id = I40E_RX_VEC_START;
> 	}
> 
>-- 
>2.17.1
>