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| author | Eric Dumazet <edumazet@google.com> | 2017-03-29 10:45:44 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-22 09:23:22 +0100 |
| commit | e4d8f491c95f65eba894c90d36e96de151d1d129 (patch) | |
| tree | 20ca95e5ce7f39d3652d464ef652c68db61d4355 /kernel | |
| parent | 87a597c7a76352d8bdb73fc9f86e314829445a72 (diff) | |
bonding: refine bond_fold_stats() wrap detection
[ Upstream commit 142c6594acbcc32391af9c15f8cd65c6c177698f ]
Some device drivers reset their stats at down/up events, possibly
fooling bonding stats, since they operate with relative deltas.
It is nearly not possible to fix drivers, since some of them compute the
tx/rx counters based on per rx/tx queue stats, and the queues can be
reconfigured (ethtool -L) between the down/up sequence.
Lets avoid accumulating 'negative' values that render bonding stats
useless.
It is better to lose small deltas, assuming the bonding stats are
fetched at a reasonable frequency.
Fixes: 5f0c5f73e5ef ("bonding: make global bonding stats more reliable")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions