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Ethernet: Add Sysfs Support to test Tx and Rx bandwidth

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Transmit: Add test_tx_bandwidth_dump_enable support to
transmit packets from the driver which helps measure
line rate for 25G and 10G.
pkt1500, pkt8192, pkt64 packet sizes can be configured.
Receive- Drop Packets at the driver level.

Bug 4742868

Change-Id: I52fe1b73b169dfedc06afea5fb62d7bc21fd9ba1
Signed-off-by: Nagaraj Annaiah <nannaiah@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3197198
Reviewed-by: Ashutosh Jha <ajha@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Nagaraj Annaiah
2024-08-20 22:09:09 +00:00
committed by Jon Hunter
parent 4dd9cd92d4
commit 731489e015
6 changed files with 372 additions and 1 deletions
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23
drivers/net/ethernet/nvidia/nvethernet/ether_linux.c
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@@ -1728,11 +1728,16 @@ static irqreturn_t ether_vm_isr(int irq, void *data)
osi_handle_dma_intr(osi_dma, chan,
OSI_DMA_CH_TX_INTR,
OSI_DMA_INTR_DISABLE);
#ifdef BW_TEST
if (pdata->test_tx_bandwidth == OSI_DISABLE) {
#endif
if (likely(napi_schedule_prep(&tx_napi->napi))) {
/* TODO: Schedule NAPI on different CPU core */
__napi_schedule_irqoff(&tx_napi->napi);
}
#ifdef BW_TEST
}
#endif
}
dma_status[i] &= ~BIT(temp);
@@ -3424,6 +3429,11 @@ static int ether_close(struct net_device *ndev)
tegra_unregister_hwtime_source(ndev);
#endif
#ifdef BW_TEST
pdata->test_tx_bandwidth = OSI_DISABLE;
cancel_delayed_work_sync(&pdata->tx_bandwidth_work);
#endif
/* Stop workqueue to get further scheduled */
ether_stats_work_queue_stop(pdata);
@@ -3885,6 +3895,13 @@ static int ether_start_xmit(struct sk_buff *skb, struct net_device *ndev)
int count = 0;
int ret;
#ifdef BW_TEST
if (pdata->test_tx_bandwidth == OSI_ENABLE) {
dev_kfree_skb_any(skb);
return NETDEV_TX_OK;
}
#endif
count = ether_tx_swcx_alloc(pdata, tx_ring, skb);
if (count <= 0) {
if (count == 0) {
@@ -7639,6 +7656,10 @@ static int ether_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&pdata->tx_ts_skb_head);
INIT_LIST_HEAD(&pdata->timestamp_skb_head);
INIT_DELAYED_WORK(&pdata->tx_ts_work, ether_get_tx_ts_work);
#ifdef BW_TEST
pdata->tx_bw_wq = create_singlethread_workqueue("tx_bw_wq");
INIT_DELAYED_WORK(&pdata->tx_bandwidth_work, ether_tx_bandwidth_work);
#endif
pdata->rx_m_enabled = false;
pdata->rx_pcs_m_enabled = false;
atomic_set(&pdata->tx_ts_ref_cnt, -1);