Set modify-QP global address parameters only for GRH case #217
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Back port PR: openucx#6061 |
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@ybedbug, please help confirm this PR is needed for connection under IB. |
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@changchengx I think this is needed under IB. Just because my test is for client/server in same subnet, the GRH which these config should be set on did not exist. If for other cases under IB i.e. sending packets to another subnet/multicast group, is_global would not be 0 and the GRH would be there and these config can be set in GRH. |
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@ybedbug Thanks for your confirmation. |
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@yosefe Could you also trigger CI test on this PR? |
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/azp run |
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Azure Pipelines successfully started running 1 pipeline(s). |
1. Back-port master/RP/6061 to integration3 branch
2. This is required by "address path structure fields"
1) hop_limit:
For IB and RoCE version 1.0: GRH Hop Limit.
2) rgid_or_rip:
For IB port - Valid if the GRH bit is set.
For an Ethernet port for RoCE mode, this field must always be valid and
contain the remote GID address.
3) traffic class:
For InfiniBand and RoCE v1.0: GRH TClass
3. According to IB Spec:
1) Address vector, for UD transports only, containing:
For global destination:
• Flow label.
• Hop limit.
• Traffic class.
• Source GID index.
2) Address vector, for RC & UC transports only, containing:
For global destination:
• Traffic class.
• Flow label.
• Hop limit.
• Source GID index.
• Destination’s GID.
Signed-off-by: Changcheng Liu <jerrliu@nvidia.com>
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Signed-off-by: Changcheng Liu <jerrliu@nvidia.com>
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@yosefe Do we have plan to merge this PR? It's ported from openucx#6061 |
yosefe
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Apr 6, 2022
| UCT_IB_MLX5DV_SET(qpc, qpc, primary_address_path.tclass, | ||
| iface->super.super.config.traffic_class); | ||
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| if (ah_attr->is_global) { |
| /* TODO add flow_label support */ | ||
| UCT_IB_MLX5DV_SET(qpc, qpc, primary_address_path.tclass, | ||
| iface->super.super.config.traffic_class); | ||
| } |
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