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| author |   Jing Su <jingsusu@didiglobal.com> | 2025-03-19 16:57:51 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-03-25 06:26:55 -0700 |
| commit | 3a17f23f7c36bac3a3584aaf97d3e3e0b2790396 (patch) | |
| tree | 4724c9753e88acb2eb2a1cad61f3941c37b1e1a9 /scripts/gdb/linux/utils.py | |
| parent | Merge branch 'selftests-net-mixed-select-polling-mode-for-tcp-ao-tests' (diff) | |
| download | wireguard-linux-3a17f23f7c36bac3a3584aaf97d3e3e0b2790396.tar.xz wireguard-linux-3a17f23f7c36bac3a3584aaf97d3e3e0b2790396.zip | |
dql: Fix dql->limit value when reset.
Executing dql_reset after setting a non-zero value for limit_min can
lead to an unreasonable situation where dql->limit is less than
dql->limit_min.
For instance, after setting
/sys/class/net/eth*/queues/tx-0/byte_queue_limits/limit_min,
an ifconfig down/up operation might cause the ethernet driver to call
netdev_tx_reset_queue, which in turn invokes dql_reset.
In this case, dql->limit is reset to 0 while dql->limit_min remains
non-zero value, which is unexpected. The limit should always be
greater than or equal to limit_min.
Signed-off-by: Jing Su <jingsusu@didiglobal.com>
Link: https://patch.msgid.link/Z9qHD1s/NEuQBdgH@pilot-ThinkCentre-M930t-N000
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions