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| author | Andrey Smetanin <asmetanin@yandex-team.ru> | 2023-04-24 23:44:11 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-06-08 15:43:08 -0400 |
| commit | 1f5d2e3bab16369d5d4b4020a25db4ab1f4f082c (patch) | |
| tree | fec6d47fc4c1f4134c4871e4afdd93067d6ae1db /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 376daf317753ccb6b1ecbdece66018f7f6313a7f (diff) | |
vhost_net: revert upend_idx only on retriable error
Fix possible virtqueue used buffers leak and corresponding stuck
in case of temporary -EIO from sendmsg() which is produced by
tun driver while backend device is not up.
In case of no-retriable error and zcopy do not revert upend_idx
to pass packet data (that is update used_idx in corresponding
vhost_zerocopy_signal_used()) as if packet data has been
transferred successfully.
v2: set vq->heads[ubuf->desc].len equal to VHOST_DMA_DONE_LEN
in case of fake successful transmit.
Signed-off-by: Andrey Smetanin <asmetanin@yandex-team.ru>
Message-Id: <20230424204411.24888-1-asmetanin@yandex-team.ru>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andrey Smetanin <asmetanin@yandex-team.ru>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions