> Sean, i don't familiar with the cm.c code, but i believe that the
> following patch will solve this issue:
>
> Index: last_stable/drivers/infiniband/core/cm.c
> ===================================================================
> --- last_stable.orig/drivers/infiniband/core/cm.c 2006-10-29 16:58:08.000000000 +0200
> +++ last_stable/drivers/infiniband/core/cm.c 2006-10-29 17:31:57.000000000 +0200
> @@ -3221,6 +3221,7 @@ static int cm_init_qp_rtr_attr(struct cm
> if (cm_id_priv->alt_av.ah_attr.dlid) {
> *qp_attr_mask |= IB_QP_ALT_PATH;
> qp_attr->alt_port_num = cm_id_priv->alt_av.port->port_num;
> + qp_attr->alt_timeout = cm_id_priv->alt_av.packet_life_time;
> qp_attr->alt_ah_attr = cm_id_priv->alt_av.ah_attr;
> }
> ret = 0;
Thanks - something like this does appear to be needed. To mirror the primary
path local ack time, we want something like packet_life_time + 1. We're also
missing setting the alt_pkey_index here as well.
I've switched around my schedule to work on the path failover code now, so I'll
work on some patches and a test program for this.
- Sean