Greetings:
Welcome to v4.
Jakub recently commented [1] that I should not hold this series on
virtio-net linking queues to NAPIs behind other important work that is
on-going and suggested I re-spin, so here we are :)
This is a significant refactor from the rfcv3 and as such I've dropped
almost all of the tags from reviewers except for patch 4 (sorry Gerhard
and Jason; the changes are significant so I think patches 1-3 need to be
re-reviewed).
As per the discussion on the v3 [2], now both RX and TX NAPIs use the
API to link queues to NAPIs. Since TX-only NAPIs don't have a NAPI ID,
commit 6597e8d35851 ("netdev-genl: Elide napi_id when not present") now
correctly elides the TX-only NAPIs (instead of printing zero) when the
queues and NAPIs are linked.
See the commit message of patch 3 for an example of how to get the NAPI
to queue mapping information.
See the commit message of patch 4 for an example of how NAPI IDs are
persistent despite queue count changes.
Thanks,
Joe
v4:
- Dropped Jakub's patch (previously patch 1).
- Significant refactor from v3 affecting patches 1-3.
- Patch 4 added tags from Jason and Gerhard.
rfcv3: https://lore.kernel.org/netdev/20250121191047.269844-1-jdamato@xxxxxxxxxx/
- patch 3:
- Removed the xdp checks completely, as Gerhard Engleder pointed
out, they are likely not necessary.
- patch 4:
- Added Xuan Zhuo's Reviewed-by.
v2: https://lore.kernel.org/netdev/20250116055302.14308-1-jdamato@xxxxxxxxxx/
- patch 1:
- New in the v2 from Jakub.
- patch 2:
- Previously patch 1, unchanged from v1.
- Added Gerhard Engleder's Reviewed-by.
- Added Lei Yang's Tested-by.
- patch 3:
- Introduced virtnet_napi_disable to eliminate duplicated code
in virtnet_xdp_set, virtnet_rx_pause, virtnet_disable_queue_pair,
refill_work as suggested by Jason Wang.
- As a result of the above refactor, dropped Reviewed-by and
Tested-by from patch 3.
- patch 4:
- New in v2. Adds persistent NAPI configuration. See commit message
for more details.
v1: https://lore.kernel.org/netdev/20250110202605.429475-1-jdamato@xxxxxxxxxx/
[1]: https://lore.kernel.org/netdev/20250221142650.3c74dcac@xxxxxxxxxx/
[2]: https://lore.kernel.org/netdev/20250127142400.24eca319@xxxxxxxxxx/
Joe Damato (4):
virtio-net: Refactor napi_enable paths
virtio-net: Refactor napi_disable paths
virtio-net: Map NAPIs to queues
virtio_net: Use persistent NAPI config
drivers/net/virtio_net.c | 100 ++++++++++++++++++++++++++++-----------
1 file changed, 73 insertions(+), 27 deletions(-)
base-commit: 7183877d6853801258b7a8d3b51b415982e5097e
--
2.45.2
