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dpdk/0023-net-hns3-reconstruct-Rx-interrupt-map.patch
speech_white 3a8995b1ad Update DPDK baseline version 
Update DPDK version from 19.11 to 20.11 and also support
hns3 PMD for Kunpeng 920 and Kunpeng 930.

Signed-off-by: speech_white <humin29@huawei.com>
2021-06-28 00:52:34 +00:00

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From badcc5f38dcf223578f870574653fdd20e00c6f8 Mon Sep 17 00:00:00 2001
From: Chengchang Tang <tangchengchang@huawei.com>
Date: Fri, 22 Jan 2021 18:18:43 +0800
Subject: [PATCH 023/189] net/hns3: reconstruct Rx interrupt map
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;
--
2.7.4
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