On 21.01.25 20:10, Joe Damato wrote:
Use netif_queue_set_napi to map NAPIs to queue IDs so that the mapping
can be accessed by user apps.
$ ethtool -i ens4 | grep driver
driver: virtio_net
$ sudo ethtool -L ens4 combined 4
$ ./tools/net/ynl/pyynl/cli.py \
--spec Documentation/netlink/specs/netdev.yaml \
--dump queue-get --json='{"ifindex": 2}'
[{'id': 0, 'ifindex': 2, 'napi-id': 8289, 'type': 'rx'},
{'id': 1, 'ifindex': 2, 'napi-id': 8290, 'type': 'rx'},
{'id': 2, 'ifindex': 2, 'napi-id': 8291, 'type': 'rx'},
{'id': 3, 'ifindex': 2, 'napi-id': 8292, 'type': 'rx'},
{'id': 0, 'ifindex': 2, 'type': 'tx'},
{'id': 1, 'ifindex': 2, 'type': 'tx'},
{'id': 2, 'ifindex': 2, 'type': 'tx'},
{'id': 3, 'ifindex': 2, 'type': 'tx'}]
Note that virtio_net has TX-only NAPIs which do not have NAPI IDs, so
the lack of 'napi-id' in the above output is expected.
Signed-off-by: Joe Damato <jdamato@xxxxxxxxxx>
---
rfcv3:
- Eliminated XDP checks; NAPIs will always be mapped to RX queues, as
Gerhard Engleder suggested.
v2:
- Eliminate RTNL code paths using the API Jakub introduced in patch 1
of this v2.
- Added virtnet_napi_disable to reduce code duplication as
suggested by Jason Wang.
drivers/net/virtio_net.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
Looks good to me. I hope I didn't get you on the wrong track!
Reviewed-by: Gerhard Engleder <gerhard@xxxxxxxxxxxxxxxxxxxxx>
