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From: Mingxia Liu <mingxia.liu@intel.com>
To: dev@dpdk.org,
beilei.xing@intel.com,
yuying.zhang@intel.com
Cc: Mingxia Liu <mingxia.liu@intel.com>
Subject: [PATCH v9 11/21] net/cpfl: support write back based on ITR expire
Date: Thu, 2 Mar 2023 21:20:47 +0000
Message-Id: <20230302212057.1114863-12-mingxia.liu@intel.com>
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ITR is the interval between two interrupts, it can be understood
as a timer here. WB_ON_ITR(write back on ITR expire) is used for
receiving packets without interrupts or full cache line, then
packets can be received one by one.
To enable WB_ON_ITR, need to enable some interrupt with
'idpf_vport_irq_map_config()' first.
Signed-off-by: Mingxia Liu <mingxia.liu@intel.com>
---
drivers/net/cpfl/cpfl_ethdev.c | 45 +++++++++++++++++++++++++++++++++-
drivers/net/cpfl/cpfl_ethdev.h | 2 ++
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/net/cpfl/cpfl_ethdev.c b/drivers/net/cpfl/cpfl_ethdev.c
index c3a6104dac..ef40ae08df 100644
--- a/drivers/net/cpfl/cpfl_ethdev.c
+++ b/drivers/net/cpfl/cpfl_ethdev.c
@@ -209,6 +209,15 @@ cpfl_dev_configure(struct rte_eth_dev *dev)
return 0;
}
+static int
+cpfl_config_rx_queues_irqs(struct rte_eth_dev *dev)
+{
+ struct idpf_vport *vport = dev->data->dev_private;
+ uint16_t nb_rx_queues = dev->data->nb_rx_queues;
+
+ return idpf_vport_irq_map_config(vport, nb_rx_queues);
+}
+
static int
cpfl_start_queues(struct rte_eth_dev *dev)
{
@@ -246,12 +255,37 @@ static int
cpfl_dev_start(struct rte_eth_dev *dev)
{
struct idpf_vport *vport = dev->data->dev_private;
+ struct idpf_adapter *base = vport->adapter;
+ struct cpfl_adapter_ext *adapter = CPFL_ADAPTER_TO_EXT(base);
+ uint16_t num_allocated_vectors = base->caps.num_allocated_vectors;
+ uint16_t req_vecs_num;
int ret;
+ req_vecs_num = CPFL_DFLT_Q_VEC_NUM;
+ if (req_vecs_num + adapter->used_vecs_num > num_allocated_vectors) {
+ PMD_DRV_LOG(ERR, "The accumulated request vectors' number should be less than %d",
+ num_allocated_vectors);
+ ret = -EINVAL;
+ goto err_vec;
+ }
+
+ ret = idpf_vc_vectors_alloc(vport, req_vecs_num);
+ if (ret != 0) {
+ PMD_DRV_LOG(ERR, "Failed to allocate interrupt vectors");
+ goto err_vec;
+ }
+ adapter->used_vecs_num += req_vecs_num;
+
+ ret = cpfl_config_rx_queues_irqs(dev);
+ if (ret != 0) {
+ PMD_DRV_LOG(ERR, "Failed to configure irqs");
+ goto err_irq;
+ }
+
ret = cpfl_start_queues(dev);
if (ret != 0) {
PMD_DRV_LOG(ERR, "Failed to start queues");
- return ret;
+ goto err_startq;
}
cpfl_set_rx_function(dev);
@@ -269,6 +303,11 @@ cpfl_dev_start(struct rte_eth_dev *dev)
err_vport:
cpfl_stop_queues(dev);
+err_startq:
+ idpf_vport_irq_unmap_config(vport, dev->data->nb_rx_queues);
+err_irq:
+ idpf_vc_vectors_dealloc(vport);
+err_vec:
return ret;
}
@@ -284,6 +323,10 @@ cpfl_dev_stop(struct rte_eth_dev *dev)
cpfl_stop_queues(dev);
+ idpf_vport_irq_unmap_config(vport, dev->data->nb_rx_queues);
+
+ idpf_vc_vectors_dealloc(vport);
+
vport->stopped = 1;
return 0;
diff --git a/drivers/net/cpfl/cpfl_ethdev.h b/drivers/net/cpfl/cpfl_ethdev.h
index 9738e89ca8..4d1441ae64 100644
--- a/drivers/net/cpfl/cpfl_ethdev.h
+++ b/drivers/net/cpfl/cpfl_ethdev.h
@@ -25,6 +25,8 @@
#define CPFL_INVALID_VPORT_IDX 0xffff
+#define CPFL_DFLT_Q_VEC_NUM 1
+
#define CPFL_MIN_BUF_SIZE 1024
#define CPFL_MAX_FRAME_SIZE 9728
#define CPFL_DEFAULT_MTU RTE_ETHER_MTU
--
2.34.1