nvmf/rdma: apply TOS on listen and accept - #4
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Lets nvmf_create_transport set the IPv4 TOS / IPv6 TCLASS on RDMA listen IDs and accepted QPs so replica return traffic can share the initiator's DSCP class. 0 keeps the rdma-core default. Co-authored-by: Cursor <cursoragent@cursor.com>
JSON decode, rdma_set_option on listen/accept, and dump_opts so the nvmf RDMA TOS path cannot land untested. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
tostonvmf_create_transportfor the RDMA transport (IPv4 TOS / IPv6 TCLASS).rdma_listen()and on each accepted QP beforerdma_accept(), so replica return traffic can share the initiator's DSCP class.0keeps the rdma-core default (untagged).Test plan
--with-rdma=mlx5_dvand confirmnvmf_create_transportacceptstos.nvmf_get_transportsreports the configuredtos.tos=96(priority 3), outbound target packets are DSCP 24; withtos=0they are untagged.Made with Cursor