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From: Mingxia Liu <mingxia.liu@intel.com>
To: dev@dpdk.org
Cc: jingjing.wu@intel.com, beilei.xing@intel.com, qi.z.zhang@intel.com,
 Mingxia Liu <mingxia.liu@intel.com>, Wenjun Wu <wenjun1.wu@intel.com>
Subject: [PATCH 20/21] net/cpfl: support single q scatter RX datapath
Date: Fri, 23 Dec 2022 01:55:57 +0000
Message-Id: <20221223015558.3143279-21-mingxia.liu@intel.com>
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This patch add single q recv scatter rx function.

Signed-off-by: Wenjun Wu <wenjun1.wu@intel.com>
Signed-off-by: Mingxia Liu <mingxia.liu@intel.com>
---
 drivers/net/cpfl/cpfl_ethdev.c |  3 ++-
 drivers/net/cpfl/cpfl_rxtx.c   | 26 ++++++++++++++++++++++++--
 drivers/net/cpfl/cpfl_rxtx.h   |  2 ++
 3 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/drivers/net/cpfl/cpfl_ethdev.c b/drivers/net/cpfl/cpfl_ethdev.c
index 578137dca0..07f616835c 100644
--- a/drivers/net/cpfl/cpfl_ethdev.c
+++ b/drivers/net/cpfl/cpfl_ethdev.c
@@ -157,7 +157,8 @@ cpfl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 		RTE_ETH_RX_OFFLOAD_UDP_CKSUM            |
 		RTE_ETH_RX_OFFLOAD_TCP_CKSUM            |
 		RTE_ETH_RX_OFFLOAD_OUTER_IPV4_CKSUM     |
-		RTE_ETH_RX_OFFLOAD_TIMESTAMP;
+		RTE_ETH_RX_OFFLOAD_TIMESTAMP		|
+		RTE_ETH_RX_OFFLOAD_SCATTER;
 
 	dev_info->tx_offload_capa =
 		RTE_ETH_TX_OFFLOAD_IPV4_CKSUM		|
diff --git a/drivers/net/cpfl/cpfl_rxtx.c b/drivers/net/cpfl/cpfl_rxtx.c
index 9277249704..3d768f1e30 100644
--- a/drivers/net/cpfl/cpfl_rxtx.c
+++ b/drivers/net/cpfl/cpfl_rxtx.c
@@ -503,6 +503,8 @@ int
 cpfl_rx_queue_init(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 {
 	struct idpf_rx_queue *rxq;
+	uint16_t max_pkt_len;
+	uint32_t frame_size;
 	int err;
 
 	if (rx_queue_id >= dev->data->nb_rx_queues)
@@ -516,6 +518,17 @@ cpfl_rx_queue_init(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 		return -EINVAL;
 	}
 
+	frame_size = dev->data->mtu + CPFL_ETH_OVERHEAD;
+
+	max_pkt_len =
+	    RTE_MIN((uint32_t)CPFL_SUPPORT_CHAIN_NUM * rxq->rx_buf_len,
+		    frame_size);
+
+	rxq->max_pkt_len = max_pkt_len;
+	if ((dev->data->dev_conf.rxmode.offloads & RTE_ETH_RX_OFFLOAD_SCATTER) ||
+	    frame_size > rxq->rx_buf_len)
+		dev->data->scattered_rx = 1;
+
 	err = idpf_register_ts_mbuf(rxq);
 	if (err != 0) {
 		PMD_DRV_LOG(ERR, "fail to register timestamp mbuf %u",
@@ -801,13 +814,22 @@ cpfl_set_rx_function(struct rte_eth_dev *dev)
 #endif /* CC_AVX512_SUPPORT */
 		}
 
+		if (dev->data->scattered_rx) {
+			dev->rx_pkt_burst = idpf_singleq_recv_scatter_pkts;
+			return;
+		}
 		dev->rx_pkt_burst = idpf_singleq_recv_pkts;
 	}
 #else
-	if (vport->rxq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT)
+	if (vport->rxq_model == VIRTCHNL2_QUEUE_MODEL_SPLIT) {
 		dev->rx_pkt_burst = idpf_splitq_recv_pkts;
-	else
+	} else {
+		if (dev->data->scattered_rx) {
+			dev->rx_pkt_burst = idpf_singleq_recv_scatter_pkts;
+			return;
+		}
 		dev->rx_pkt_burst = idpf_singleq_recv_pkts;
+	}
 #endif /* RTE_ARCH_X86 */
 }
 
diff --git a/drivers/net/cpfl/cpfl_rxtx.h b/drivers/net/cpfl/cpfl_rxtx.h
index 021db5bf8a..2d55f58455 100644
--- a/drivers/net/cpfl/cpfl_rxtx.h
+++ b/drivers/net/cpfl/cpfl_rxtx.h
@@ -21,6 +21,8 @@
 #define CPFL_DEFAULT_TX_RS_THRESH	32
 #define CPFL_DEFAULT_TX_FREE_THRESH	32
 
+#define CPFL_SUPPORT_CHAIN_NUM 5
+
 int cpfl_tx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx,
 			uint16_t nb_desc, unsigned int socket_id,
 			const struct rte_eth_txconf *tx_conf);
-- 
2.25.1