diff mbox series

[v8,11/21] net/cpfl: support write back based on ITR expire

Message ID 20230302103527.931071-12-mingxia.liu@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Ferruh Yigit
Headers
Series add support for cpfl PMD in DPDK |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Liu, Mingxia March 2, 2023, 10:35 a.m. UTC 
  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 mbox series

Patch

diff --git a/drivers/net/cpfl/cpfl_ethdev.c b/drivers/net/cpfl/cpfl_ethdev.c
index 37e0270dd7..b09c7d4996 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