[dpdk-dev] [PATCH v2 17/17] net/hinic: optimize tx&rx performance

Xiaoyun wang cloud.wangxiaoyun at huawei.com
Wed Sep 25 16:30:45 CEST 2019


This patch optimizes receive packets performance
in arm platform.

Signed-off-by: Xiaoyun wang <cloud.wangxiaoyun at huawei.com>
---
 drivers/net/hinic/hinic_pmd_rx.c | 17 +++++++++++++++++
 drivers/net/hinic/hinic_pmd_rx.h | 11 +++++++++++
 2 files changed, 28 insertions(+)

diff --git a/drivers/net/hinic/hinic_pmd_rx.c b/drivers/net/hinic/hinic_pmd_rx.c
index 37b4f5c..94071ee 100644
--- a/drivers/net/hinic/hinic_pmd_rx.c
+++ b/drivers/net/hinic/hinic_pmd_rx.c
@@ -950,6 +950,19 @@ void hinic_rx_alloc_pkts(struct hinic_rxq *rxq)
 	}
 }
 
+#if defined(__ARM64_NEON__)
+static inline uint32_t __attribute__((always_inline))
+hinic_read_cqe_status(uintptr_t addr)
+{
+	uint32_t val;
+
+	asm volatile("ldar %x[val], [%x[addr]]"
+		: [val] "=r" (val)
+		: [addr] "r" (addr));
+	return val;
+}
+#endif
+
 u16 hinic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, u16 nb_pkts)
 {
 	struct rte_mbuf *rxm;
@@ -972,7 +985,11 @@ u16 hinic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, u16 nb_pkts)
 	while (pkts < nb_pkts) {
 		 /* 2. current ci is done */
 		rx_cqe = &rxq->rx_cqe[sw_ci];
+#if defined(__X86_64_SSE__)
 		status = rx_cqe->status;
+#elif defined(__ARM64_NEON__)
+		status = hinic_read_cqe_status((uintptr_t)&rxq->rx_cqe[sw_ci]);
+#endif
 		if (!HINIC_GET_RX_DONE_BE(status))
 			break;
 
diff --git a/drivers/net/hinic/hinic_pmd_rx.h b/drivers/net/hinic/hinic_pmd_rx.h
index fe2735b..fa27e91 100644
--- a/drivers/net/hinic/hinic_pmd_rx.h
+++ b/drivers/net/hinic/hinic_pmd_rx.h
@@ -28,6 +28,7 @@ struct hinic_rq_ctrl {
 	u32	ctrl_fmt;
 };
 
+#if defined(__X86_64_SSE__)
 struct hinic_rq_cqe {
 	u32 status;
 	u32 vlan_len;
@@ -36,6 +37,16 @@ struct hinic_rq_cqe {
 
 	u32 rsvd[4];
 };
+#elif defined(__ARM64_NEON__)
+struct hinic_rq_cqe {
+	u32 status;
+	u32 vlan_len;
+	u32 offload_type;
+	u32 rss_hash;
+
+	u32 rsvd[4];
+} __rte_cache_aligned;
+#endif
 
 struct hinic_rq_cqe_sect {
 	struct hinic_sge	sge;
-- 
1.8.3.1



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