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Message-Id: <20210311152910.56760-14-maciej.fijalkowski@intel.com>
Date: Thu, 11 Mar 2021 16:29:06 +0100
From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To: bpf@...r.kernel.org, netdev@...r.kernel.org, daniel@...earbox.net,
ast@...nel.org
Cc: bjorn.topel@...el.com, magnus.karlsson@...el.com,
ciara.loftus@...el.com, john.fastabend@...il.com, toke@...hat.com,
Maciej Fijalkowski <maciej.fijalkowski@...el.com>
Subject: [PATCH v2 bpf-next 13/17] veth: implement ethtool's get_channels() callback
Libbpf's xsk part calls get_channels() API to retrieve the queue count
of the underlying driver so that XSKMAP is sized accordingly.
Implement that in veth so multi queue scenarios can work properly.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
---
drivers/net/veth.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index aa1a66ad2ce5..efca3d45f5c2 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -218,6 +218,17 @@ static void veth_get_ethtool_stats(struct net_device *dev,
}
}
+static void veth_get_channels(struct net_device *dev,
+ struct ethtool_channels *channels)
+{
+ channels->tx_count = dev->real_num_tx_queues;
+ channels->rx_count = dev->real_num_rx_queues;
+ channels->max_tx = dev->real_num_tx_queues;
+ channels->max_rx = dev->real_num_rx_queues;
+ channels->combined_count = min(dev->real_num_rx_queues, dev->real_num_rx_queues);
+ channels->max_combined = min(dev->real_num_rx_queues, dev->real_num_rx_queues);
+}
+
static const struct ethtool_ops veth_ethtool_ops = {
.get_drvinfo = veth_get_drvinfo,
.get_link = ethtool_op_get_link,
@@ -226,6 +237,7 @@ static const struct ethtool_ops veth_ethtool_ops = {
.get_ethtool_stats = veth_get_ethtool_stats,
.get_link_ksettings = veth_get_link_ksettings,
.get_ts_info = ethtool_op_get_ts_info,
+ .get_channels = veth_get_channels,
};
/* general routines */
--
2.20.1
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