[ofa-general] Re: [PATCH] IB/core - reset to error state transition not allowed

[Roland Dreier]

 > I was reviewing the QP state transition diagram in the IB 1.2.1
 > spec. and the code for qp_state_table[], and noticed that
 > the code allows a QP to be modified from IB_QPS_RESET to
 > IB_QPS_ERR whereas the notes for figure 124 (pg 457)
 > specifically says that this transition isn't allowed.

This is a change from the 1.2 spec, which says:

  It is possible to transition from any state to either the Error state
  or the Reset state with the Modify QP/EE Verb.

Does anyone know why this change was made?  We specifically added code
to some low-level drivers to handle RESET->ERROR transitions, so I guess
someone cared (although maybe it was just for absolute spec compliance).

 - R.