7d8194517a
Sync some patches for hns3 PMD, telemetry and testpmd. And main modifications are as follows: - backport some bugfixes for hns3 - revert Tx performance optimization for hns3 - add Rx/Tx descriptor dump feature for hns3 - refactor some RSS commands for testpmd - add ethdev telemetry private dump - add dmadev telemetry - sync telemetry lib Signed-off-by: Huisong Li <lihuisong@huawei.com> (cherry picked from commit 4f06d27eff9aa99c2e2073ac74328893990ed8ed)
63 lines
2.0 KiB
Diff
63 lines
2.0 KiB
Diff
From ab50c70fe965fb931156eddfbde0ead68323849a Mon Sep 17 00:00:00 2001
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From: Chengwen Feng <fengchengwen@huawei.com>
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Date: Fri, 21 Oct 2022 15:36:09 +0800
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Subject: [PATCH 133/189] examples/dma: support dequeue when no packet received
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Currently the example using DMA in asynchronous mode, which are:
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nb_rx = rte_eth_rx_burst();
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if (nb_rx == 0)
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continue;
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...
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dma_enqueue(); // enqueue the received packets copy request
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nb_cpl = dma_dequeue(); // get copy completed packets
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...
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There are no waiting inside dma_dequeue(), and this is why it's called
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asynchronus. If there are no packet received, it won't call
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dma_dequeue(), but some packets may still in the DMA queue which
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enqueued in last cycle. As a result, when the traffic is stopped, the
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sent packets and received packets are unbalanced from the perspective
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of the traffic generator.
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The patch supports DMA dequeue when no packet received, it helps to
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judge the test result by comparing the sent packets with the received
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packets on traffic generator sides.
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Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
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Acked-by: Bruce Richardson <bruce.richardson@intel.com>
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Acked-by: Kevin Laatz <kevin.laatz@intel.com>
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---
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examples/dma/dmafwd.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/examples/dma/dmafwd.c b/examples/dma/dmafwd.c
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index 9b17b40dbf..b06042e5fe 100644
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--- a/examples/dma/dmafwd.c
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+++ b/examples/dma/dmafwd.c
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@@ -408,8 +408,13 @@ dma_rx_port(struct rxtx_port_config *rx_config)
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nb_rx = rte_eth_rx_burst(rx_config->rxtx_port, i,
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pkts_burst, MAX_PKT_BURST);
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- if (nb_rx == 0)
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+ if (nb_rx == 0) {
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+ if (copy_mode == COPY_MODE_DMA_NUM &&
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+ (nb_rx = dma_dequeue(pkts_burst, pkts_burst_copy,
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+ MAX_PKT_BURST, rx_config->dmadev_ids[i])) > 0)
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+ goto handle_tx;
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continue;
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+ }
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port_statistics.rx[rx_config->rxtx_port] += nb_rx;
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@@ -450,6 +455,7 @@ dma_rx_port(struct rxtx_port_config *rx_config)
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pkts_burst_copy[j]);
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}
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+handle_tx:
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rte_mempool_put_bulk(dma_pktmbuf_pool,
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(void *)pkts_burst, nb_rx);
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--
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2.23.0
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