[dpdk-stable] [dpdk-dev] [PATCH 1/2] net/i40e: fix binding interrupt without msix vectors
Jeff Guo
jia.guo at intel.com
Tue Jul 21 05:57:38 CEST 2020
hi, jiang mao
On 7/9/2020 3:50 AM, Jiang Mao wrote:
> The value of vsi->nb_msix shouldn`t be zero, otherwise, all of
> interrupts will be bind to vector 0.
>
> Fixes: 4861cde461 (i40e: new poll mode driver)
> Cc: stable at dpdk.org
Blank line is need before Signed-off. And please remember --reply-to
when you send new version patch to trace the comments.
> Signed-off-by: Jiang Mao <maox.jiang at intel.com>
> ---
> drivers/net/i40e/i40e_ethdev.c | 31 +++++++++++++++++++++++--------
> drivers/net/i40e/i40e_ethdev.h | 2 +-
> 2 files changed, 24 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
> index 777e149..16fcb8d 100644
> --- a/drivers/net/i40e/i40e_ethdev.c
> +++ b/drivers/net/i40e/i40e_ethdev.c
> @@ -2001,7 +2001,7 @@ void i40e_flex_payload_reg_set_default(struct i40e_hw *hw)
> I40E_WRITE_FLUSH(hw);
> }
>
> -void
> +int
> i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t itr_idx)
> {
> struct rte_eth_dev *dev = vsi->adapter->eth_dev;
> @@ -2021,10 +2021,14 @@ void i40e_flex_payload_reg_set_default(struct i40e_hw *hw)
>
> /* VF bind interrupt */
> if (vsi->type == I40E_VSI_SRIOV) {
> + if (vsi->nb_msix == 0) {
> + PMD_DRV_LOG(ERR, "No msix resource");
> + return -EINVAL;
> + }
> __vsi_queues_bind_intr(vsi, msix_vect,
> vsi->base_queue, vsi->nb_qps,
> itr_idx);
> - return;
> + return 0;
> }
>
> /* PF & VMDq bind interrupt */
> @@ -2041,7 +2045,10 @@ void i40e_flex_payload_reg_set_default(struct i40e_hw *hw)
> }
>
> for (i = 0; i < vsi->nb_used_qps; i++) {
> - if (nb_msix <= 1) {
> + if (vsi->nb_msix == 0) {
> + PMD_DRV_LOG(ERR, "No msix resource");
> + return -EINVAL;
> + } else if (nb_msix <= 1) {
> if (!rte_intr_allow_others(intr_handle))
> /* allow to share MISC_VEC_ID */
> msix_vect = I40E_MISC_VEC_ID;
> @@ -2066,6 +2073,8 @@ void i40e_flex_payload_reg_set_default(struct i40e_hw *hw)
> msix_vect++;
> nb_msix--;
> }
> +
> + return 0;
> }
>
> static void
> @@ -2306,21 +2315,27 @@ void i40e_flex_payload_reg_set_default(struct i40e_hw *hw)
> /* Map queues with MSIX interrupt */
> main_vsi->nb_used_qps = dev->data->nb_rx_queues -
> pf->nb_cfg_vmdq_vsi * RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM;
> - i40e_vsi_queues_bind_intr(main_vsi, I40E_ITR_INDEX_DEFAULT);
> + ret = i40e_vsi_queues_bind_intr(main_vsi, I40E_ITR_INDEX_DEFAULT);
> + if (ret < 0)
Better to add some print log out of the calling if it is need. Below is
the same.
> + return ret;
> i40e_vsi_enable_queues_intr(main_vsi);
>
> /* Map VMDQ VSI queues with MSIX interrupt */
> for (i = 0; i < pf->nb_cfg_vmdq_vsi; i++) {
> pf->vmdq[i].vsi->nb_used_qps = RTE_LIBRTE_I40E_QUEUE_NUM_PER_VM;
> - i40e_vsi_queues_bind_intr(pf->vmdq[i].vsi,
> - I40E_ITR_INDEX_DEFAULT);
> + ret = i40e_vsi_queues_bind_intr(pf->vmdq[i].vsi,
> + I40E_ITR_INDEX_DEFAULT);
> + if (ret < 0)
> + return ret;
> i40e_vsi_enable_queues_intr(pf->vmdq[i].vsi);
> }
>
> /* enable FDIR MSIX interrupt */
> if (pf->fdir.fdir_vsi) {
> - i40e_vsi_queues_bind_intr(pf->fdir.fdir_vsi,
> - I40E_ITR_INDEX_NONE);
> + ret = i40e_vsi_queues_bind_intr(pf->fdir.fdir_vsi,
> + I40E_ITR_INDEX_NONE);
> + if (ret < 0)
> + return ret;
> i40e_vsi_enable_queues_intr(pf->fdir.fdir_vsi);
> }
>
> diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
> index e5d0ce5..33fbe77 100644
> --- a/drivers/net/i40e/i40e_ethdev.h
> +++ b/drivers/net/i40e/i40e_ethdev.h
> @@ -1248,7 +1248,7 @@ struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf,
> void i40e_pf_disable_irq0(struct i40e_hw *hw);
> void i40e_pf_enable_irq0(struct i40e_hw *hw);
> int i40e_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete);
> -void i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t itr_idx);
> +int i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t itr_idx);
> void i40e_vsi_queues_unbind_intr(struct i40e_vsi *vsi);
> int i40e_vsi_vlan_pvid_set(struct i40e_vsi *vsi,
> struct i40e_vsi_vlan_pvid_info *info);
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