On Tue, May 29, 2018 at 09:38:08AM +0200, Hans Westgaard Ry wrote: > The agent TID is a 64 bit value split in two dwords. The least > significant dword is the TID running counter. The most significant > dword is the agent number. In the CX-3 shared port model, the mlx4 > driver uses the most significant byte of the agent number to store the > slave number, making agent numbers greater and equal to 2^24 (3 bytes) > unusable. There is no reason for this to be an ida, just do something like mad_agent_priv->agent.hi_tid = atomic_inc_return(&ib_mad_client_id) & mad_agent_priv->ib_dev->tid_mask; And have the driver set tid_mask to 3 bytes of 0xFF And no sysctl. Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
