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| author | Yuri Benditovich | 2020-11-12 10:46:53 +0100 |
|---|---|---|
| committer | Jason Wang | 2020-11-24 03:40:17 +0100 |
| commit | d2abc563e4ba4057b9cb5c04dd203b8c3a949115 (patch) | |
| tree | 613ed56084bc64f69acc6ff89aa76af7fc5317ab /qapi | |
| parent | net: do not exit on "netdev_add help" monitor command (diff) | |
| download | qemu-d2abc563e4ba4057b9cb5c04dd203b8c3a949115.tar.gz qemu-d2abc563e4ba4057b9cb5c04dd203b8c3a949115.tar.xz qemu-d2abc563e4ba4057b9cb5c04dd203b8c3a949115.zip | |
net: purge queued rx packets on queue deletion
https://bugzilla.redhat.com/show_bug.cgi?id=1829272
When deleting queue pair, purge pending RX packets if any.
Example of problematic flow:
1. Bring up q35 VM with tap (vhost off) and virtio-net or e1000e
2. Run ping flood to the VM NIC ( 1 ms interval)
3. Hot unplug the NIC device (device_del)
During unplug process one or more packets come, the NIC
can't receive, tap disables read_poll
4. Hot plug the device (device_add) with the same netdev
The tap stays with read_poll disabled and does not receive
any packets anymore (tap_send never triggered)
Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'qapi')
0 files changed, 0 insertions, 0 deletions