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| author | Stephen Hemminger <stephen@networkplumber.org> | 2026-04-18 06:19:41 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-04-28 03:30:28 +0300 |
| commit | 986afaf809940577224a99c3a08d97a15eb37e93 (patch) | |
| tree | f3bc0d5484637545f472122a2894a7062c131d41 /include/linux | |
| parent | 4185701fcce6b426b6c3630b25330dddd9c47b0d (diff) | |
| download | linux-986afaf809940577224a99c3a08d97a15eb37e93.tar.xz | |
net/sched: netem: only reseed PRNG when seed is explicitly provided
netem_change() unconditionally reseeds the PRNG on every tc change
command. If TCA_NETEM_PRNG_SEED is not specified, a new random seed
is generated, destroying reproducibility for users who set a
deterministic seed on a previous change.
Move the initial random seed generation to netem_init() and only
reseed in netem_change() when TCA_NETEM_PRNG_SEED is explicitly
provided by the user.
Fixes: 4072d97ddc44 ("netem: add prng attribute to netem_sched_data")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260418032027.900913-4-stephen@networkplumber.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions