From: Chengchang Tang tangchengchang@huawei.com
This patch reconstruct the Rx interrupt map to reduce the cyclic complexity and improve readability and maintainability.
Signed-off-by: Chengchang Tang tangchengchang@huawei.com Signed-off-by: Lijun Ou oulijun@huawei.com --- drivers/net/hns3/hns3_ethdev.c | 59 +++++++++++++++++++-------------------- drivers/net/hns3/hns3_ethdev_vf.c | 55 ++++++++++++++++++------------------ 2 files changed, 56 insertions(+), 58 deletions(-)
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c index 7c51e83..f3ce639 100644 --- a/drivers/net/hns3/hns3_ethdev.c +++ b/drivers/net/hns3/hns3_ethdev.c @@ -4782,27 +4782,28 @@ hns3_map_rx_interrupt(struct rte_eth_dev *dev) uint16_t q_id; int ret;
- if (dev->data->dev_conf.intr_conf.rxq == 0) + /* + * hns3 needs a separate interrupt to be used as event interrupt which + * could not be shared with task queue pair, so KERNEL drivers need + * support multiple interrupt vectors. + */ + if (dev->data->dev_conf.intr_conf.rxq == 0 || + !rte_intr_cap_multiple(intr_handle)) return 0;
- /* disable uio/vfio intr/eventfd mapping */ rte_intr_disable(intr_handle); + intr_vector = hw->used_rx_queues; + /* creates event fd for each intr vector when MSIX is used */ + if (rte_intr_efd_enable(intr_handle, intr_vector)) + return -EINVAL;
- /* check and configure queue intr-vector mapping */ - if (rte_intr_cap_multiple(intr_handle) || - !RTE_ETH_DEV_SRIOV(dev).active) { - intr_vector = hw->used_rx_queues; - /* creates event fd for each intr vector when MSIX is used */ - if (rte_intr_efd_enable(intr_handle, intr_vector)) - return -EINVAL; - } - if (rte_intr_dp_is_en(intr_handle) && !intr_handle->intr_vec) { + if (intr_handle->intr_vec == NULL) { intr_handle->intr_vec = rte_zmalloc("intr_vec", hw->used_rx_queues * sizeof(int), 0); if (intr_handle->intr_vec == NULL) { - hns3_err(hw, "Failed to allocate %u rx_queues" - " intr_vec", hw->used_rx_queues); + hns3_err(hw, "failed to allocate %u rx_queues intr_vec", + hw->used_rx_queues); ret = -ENOMEM; goto alloc_intr_vec_error; } @@ -4812,28 +4813,26 @@ hns3_map_rx_interrupt(struct rte_eth_dev *dev) vec = RTE_INTR_VEC_RXTX_OFFSET; base = RTE_INTR_VEC_RXTX_OFFSET; } - if (rte_intr_dp_is_en(intr_handle)) { - for (q_id = 0; q_id < hw->used_rx_queues; q_id++) { - ret = hns3_bind_ring_with_vector(hw, vec, true, - HNS3_RING_TYPE_RX, - q_id); - if (ret) - goto bind_vector_error; - intr_handle->intr_vec[q_id] = vec; - if (vec < base + intr_handle->nb_efd - 1) - vec++; - } + + for (q_id = 0; q_id < hw->used_rx_queues; q_id++) { + ret = hns3_bind_ring_with_vector(hw, vec, true, + HNS3_RING_TYPE_RX, q_id); + if (ret) + goto bind_vector_error; + intr_handle->intr_vec[q_id] = vec; + /* + * If there are not enough efds (e.g. not enough interrupt), + * remaining queues will be bond to the last interrupt. + */ + if (vec < base + intr_handle->nb_efd - 1) + vec++; } rte_intr_enable(intr_handle); return 0;
bind_vector_error: - rte_intr_efd_disable(intr_handle); - if (intr_handle->intr_vec) { - free(intr_handle->intr_vec); - intr_handle->intr_vec = NULL; - } - return ret; + rte_free(intr_handle->intr_vec); + intr_handle->intr_vec = NULL; alloc_intr_vec_error: rte_intr_efd_disable(intr_handle); return ret; diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c index 37135d7..3a1d4cb 100644 --- a/drivers/net/hns3/hns3_ethdev_vf.c +++ b/drivers/net/hns3/hns3_ethdev_vf.c @@ -2085,21 +2085,22 @@ hns3vf_map_rx_interrupt(struct rte_eth_dev *dev) uint16_t q_id; int ret;
- if (dev->data->dev_conf.intr_conf.rxq == 0) + /* + * hns3 needs a separate interrupt to be used as event interrupt which + * could not be shared with task queue pair, so KERNEL drivers need + * support multiple interrupt vectors. + */ + if (dev->data->dev_conf.intr_conf.rxq == 0 || + !rte_intr_cap_multiple(intr_handle)) return 0;
- /* disable uio/vfio intr/eventfd mapping */ rte_intr_disable(intr_handle); + intr_vector = hw->used_rx_queues; + /* It creates event fd for each intr vector when MSIX is used */ + if (rte_intr_efd_enable(intr_handle, intr_vector)) + return -EINVAL;
- /* check and configure queue intr-vector mapping */ - if (rte_intr_cap_multiple(intr_handle) || - !RTE_ETH_DEV_SRIOV(dev).active) { - intr_vector = hw->used_rx_queues; - /* It creates event fd for each intr vector when MSIX is used */ - if (rte_intr_efd_enable(intr_handle, intr_vector)) - return -EINVAL; - } - if (rte_intr_dp_is_en(intr_handle) && !intr_handle->intr_vec) { + if (intr_handle->intr_vec == NULL) { intr_handle->intr_vec = rte_zmalloc("intr_vec", hw->used_rx_queues * sizeof(int), 0); @@ -2115,28 +2116,26 @@ hns3vf_map_rx_interrupt(struct rte_eth_dev *dev) vec = RTE_INTR_VEC_RXTX_OFFSET; base = RTE_INTR_VEC_RXTX_OFFSET; } - if (rte_intr_dp_is_en(intr_handle)) { - for (q_id = 0; q_id < hw->used_rx_queues; q_id++) { - ret = hns3vf_bind_ring_with_vector(hw, vec, true, - HNS3_RING_TYPE_RX, - q_id); - if (ret) - goto vf_bind_vector_error; - intr_handle->intr_vec[q_id] = vec; - if (vec < base + intr_handle->nb_efd - 1) - vec++; - } + + for (q_id = 0; q_id < hw->used_rx_queues; q_id++) { + ret = hns3vf_bind_ring_with_vector(hw, vec, true, + HNS3_RING_TYPE_RX, q_id); + if (ret) + goto vf_bind_vector_error; + intr_handle->intr_vec[q_id] = vec; + /* + * If there are not enough efds (e.g. not enough interrupt), + * remaining queues will be bond to the last interrupt. + */ + if (vec < base + intr_handle->nb_efd - 1) + vec++; } rte_intr_enable(intr_handle); return 0;
vf_bind_vector_error: - rte_intr_efd_disable(intr_handle); - if (intr_handle->intr_vec) { - free(intr_handle->intr_vec); - intr_handle->intr_vec = NULL; - } - return ret; + free(intr_handle->intr_vec); + intr_handle->intr_vec = NULL; vf_alloc_intr_vec_error: rte_intr_efd_disable(intr_handle); return ret;