From 6f1998a4f0411ea3b2bed7c05faa81243917a76e Mon Sep 17 00:00:00 2001 From: Mao Jiang Date: Thu, 23 Jul 2020 23:27:10 +0800 Subject: [PATCH] net/i40e: fix binding interrupt without MSI-X vector The value of vsi->nb_msix shouldn't`t be zero, otherwise, all of interrupts will be bind to vector 0. Fixes: 4861cde46116 ("i40e: new poll mode driver") Cc: stable@dpdk.org Signed-off-by: Mao Jiang Acked-by: Qi Zhang --- drivers/net/i40e/i40e_ethdev.c | 25 +++++++++++++++++++------ drivers/net/i40e/i40e_ethdev.h | 2 +- 2 files changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c index 05d5f28615..0c32e451c5 100644 --- a/drivers/net/i40e/i40e_ethdev.c +++ b/drivers/net/i40e/i40e_ethdev.c @@ -2117,7 +2117,7 @@ __vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t msix_vect, 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; @@ -2137,10 +2137,14 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t itr_idx) /* 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 */ @@ -2157,7 +2161,10 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t itr_idx) } 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; @@ -2182,6 +2189,8 @@ i40e_vsi_queues_bind_intr(struct i40e_vsi *vsi, uint16_t itr_idx) msix_vect++; nb_msix--; } + + return 0; } void @@ -2422,14 +2431,18 @@ i40e_dev_start(struct rte_eth_dev *dev) /* 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) + 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); } diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h index aef88abed0..19f821829a 100644 --- a/drivers/net/i40e/i40e_ethdev.h +++ b/drivers/net/i40e/i40e_ethdev.h @@ -1319,7 +1319,7 @@ void i40e_update_vsi_stats(struct i40e_vsi *vsi); 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); void i40e_vsi_disable_queues_intr(struct i40e_vsi *vsi); int i40e_vsi_vlan_pvid_set(struct i40e_vsi *vsi, -- 2.20.1