> +static u8 cma_get_ib_subnet_timeout(struct rdma_cm_id *id)
> +{
> + struct ib_port_attr attr;
> + int ret;
> +
> + ret = ib_query_port(id->device, id->port_num, &attr);
> + return ret == 0 ? attr.subnet_timeout : 18;
> +}
Can we query the port once (or only on a change) and cache the result, rather
than querying it for every request?
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