From ffcdd1197da61fd86528e41ea7d5cdb043761087 Mon Sep 17 00:00:00 2001 From: Andrey Turkin Date: Tue, 19 Jul 2022 04:29:55 +0000 Subject: [PATCH] vmxnet3: Implement ethtool's get_channels command Some tools (e.g. libxdp) use that information. Signed-off-by: Andrey Turkin Signed-off-by: David S. Miller --- drivers/net/vmxnet3/vmxnet3_ethtool.c | 29 +++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c index c3eaf1b864ed..e2034adc3a1a 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethtool.c +++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c @@ -1292,6 +1292,34 @@ done: return 0; } +static void vmxnet3_get_channels(struct net_device *netdev, + struct ethtool_channels *ec) +{ + struct vmxnet3_adapter *adapter = netdev_priv(netdev); + + if (IS_ENABLED(CONFIG_PCI_MSI) && adapter->intr.type == VMXNET3_IT_MSIX) { + if (adapter->share_intr == VMXNET3_INTR_BUDDYSHARE) { + ec->combined_count = adapter->num_tx_queues; + } else { + ec->rx_count = adapter->num_rx_queues; + ec->tx_count = + adapter->share_intr == VMXNET3_INTR_TXSHARE ? + 1 : adapter->num_tx_queues; + } + } else { + ec->combined_count = 1; + } + + ec->other_count = 1; + + /* Number of interrupts cannot be changed on the fly */ + /* Just set maximums to actual values */ + ec->max_rx = ec->rx_count; + ec->max_tx = ec->tx_count; + ec->max_combined = ec->combined_count; + ec->max_other = ec->other_count; +} + static const struct ethtool_ops vmxnet3_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS | ETHTOOL_COALESCE_MAX_FRAMES | @@ -1317,6 +1345,7 @@ static const struct ethtool_ops vmxnet3_ethtool_ops = { .set_rxfh = vmxnet3_set_rss, #endif .get_link_ksettings = vmxnet3_get_link_ksettings, + .get_channels = vmxnet3_get_channels, }; void vmxnet3_set_ethtool_ops(struct net_device *netdev)