On Thu, 2007-01-25 at 11:30 -0800, Sean Hefty wrote: > Steve, > > I'm looking at rdma_create_qp() in librdmacm. There's a section of code in > there: > > if (id->ps == RDMA_PS_UDP) > ret = ucma_init_ud_qp(id_priv, qp); > else > ret = ucma_init_ib_qp(id_priv, qp); > > Both of these calls transition the QP to INIT, so that the user can post > receives before trying to establish a connection. iWarp is handled the same > as > IB, which confuses me, since it is treated differently in the kernel. I'm > assuming that the librdmacm works for you over iWarp, but I'd like to > understand > this better. > > - Sean
I think the kernel could probably also be common and it would work. iWARP QPs don't have a separate RESET state like IB, so the qp_modify RESET->INIT really becomes a noop. iWARP QPs start out in IDLE state and its valid to post receives in IDLE. We map iWARP IDLE -> IB INIT and IB RESET. Steve. _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
