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authorMark Bloch <mbloch@nvidia.com>2022-03-01 20:34:31 +0300
committerSaeed Mahameed <saeedm@nvidia.com>2022-05-10 08:54:02 +0300
commitcdf611d17094aea113d7acc32040a1b362dfe2c4 (patch)
treebad72246faf6bcc3f90858ecd64c83ddc1d8e9a8 /tools/perf/scripts/python/exported-sql-viewer.py
parente2c45931ff124381e6389c5e226a9527ff8c9969 (diff)
downloadlinux-cdf611d17094aea113d7acc32040a1b362dfe2c4.tar.xz
net/mlx5: Lag, use hash when in roce lag on 4 ports
Downstream patches will add support for lag over 4 ports. In that mode we will only use hash as the uplink selection method. Using hash instead of queue affinity (before this patch) offers key advantages like: - Align ports selection method with the method used by the bond device - Better packets distribution where a single queue can transmit from multiple ports (with queue affinity a queue is bound to a single port regardless of the packet being sent). - In case of failover we traffic is split between multiple ports and not a single one like in queue affinity. Going forward it was decided that queue affinity will be deprecated as using hash provides a better user experience which means on 4 ports HCAs hash will always be used. Future work will add hash support for 2 ports HCAs as well. Signed-off-by: Mark Bloch <mbloch@nvidia.com> Reviewed-by: Maor Gottlieb <maorg@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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