netdev - [PATCH net-next 0/3] virtio_net: Link queues to NAPIs

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Message-Id: <20250110202605.429475-1-jdamato@fastly.com>
Date: Fri, 10 Jan 2025 20:26:01 +0000
From: Joe Damato <jdamato@...tly.com>
To: netdev@...r.kernel.org
Cc: mkarsten@...terloo.ca,
	Joe Damato <jdamato@...tly.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Eugenio Pérez <eperezma@...hat.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Jason Wang <jasowang@...hat.com>,
	linux-kernel@...r.kernel.org (open list),
	"Michael S. Tsirkin" <mst@...hat.com>,
	Paolo Abeni <pabeni@...hat.com>,
	virtualization@...ts.linux.dev (open list:VIRTIO CORE AND NET DRIVERS),
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: [PATCH net-next 0/3] virtio_net: Link queues to NAPIs

Greetings:

Recently [1], Jakub mentioned that there were a few drivers that are not
yet mapping queues to NAPIs.

While I don't have any of the other hardware mentioned, I do happen to
have a virtio_net laying around ;)

I've attempted to link queues to NAPIs, taking care to hold RTNL when it
seemed that the path was not already holding it.

Note: It seems virtio_net uses TX-only NAPIs which do not have NAPI IDs.
As such, I've left the TX NAPIs unset (as opposed to setting them to 0).

See the commit message of patch 3 for example out to see what I mean.

Thanks,
Joe

[1]: https://lore.kernel.org/netdev/20250109084301.2445a3e3@kernel.org/

Joe Damato (3):
  virtio_net: Prepare for NAPI to queue mapping
  virtio_net: Hold RTNL for NAPI to queue mapping
  virtio_net: Map NAPIs to queues

 drivers/net/virtio_net.c | 48 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 4 deletions(-)


base-commit: 7b24f164cf005b9649138ef6de94aaac49c9f3d1
-- 
2.25.1