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[net-next,1/5] veth: always report zero combined channels

Message ID bcd1b935c04c220c0c7135a0a489e1bd34b8ad7e.1626768072.git.pabeni@redhat.com (mailing list archive)
State Accepted
Commit f7918b79019f13ece815b2a88bab12974793aed1
Delegated to: Netdev Maintainers
Headers show
Series veth: more flexible channels number configuration | expand

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netdev/build_32bit success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
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Commit Message

Paolo Abeni July 20, 2021, 8:41 a.m. UTC
veth get_channel currently reports for channels being both RX/TX and
combined. As Jakub noted:

"""
ethtool man page is relatively clear, unfortunately the kernel code
is not and few read the man page. A channel is approximately an IRQ,
not a queue, and IRQ can't be dedicated and combined simultaneously
"""

This patch changes the information exposed by veth_get_channels,
setting max_combined to zero, being more consistent with the above
statement. The ethtool_channels is always cleared by the caller, we just
need to avoid setting the 'combined' fields.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
 drivers/net/veth.c | 2 --
 1 file changed, 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index bdb7ce3cb054..4b3e2617fdb5 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -226,8 +226,6 @@  static void veth_get_channels(struct net_device *dev,
 	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_tx_queues);
-	channels->max_combined = min(dev->real_num_rx_queues, dev->real_num_tx_queues);
 }
 
 static const struct ethtool_ops veth_ethtool_ops = {