On Thu, Aug 23, 2012 at 6:45 PM, Hefty, Sean <[email protected]> wrote: > > > diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c > > index 7172559..f7e4cb9 100644 > > --- a/drivers/infiniband/core/cma.c > > +++ b/drivers/infiniband/core/cma.c > > @@ -3056,9 +3056,16 @@ static int cma_join_ib_multicast(struct > > rdma_id_private > > *id_priv, > > IB_SA_MCMEMBER_REC_FLOW_LABEL | > > IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; > > > > - if (id_priv->id.ps == RDMA_PS_IPOIB) > > + if (id_priv->id.ps == RDMA_PS_IPOIB) { > > comp_mask |= IB_SA_MCMEMBER_REC_RATE | > > - IB_SA_MCMEMBER_REC_RATE_SELECTOR; > > + IB_SA_MCMEMBER_REC_RATE_SELECTOR | > > + IB_SA_MCMEMBER_REC_MTU_SELECTOR | > > + IB_SA_MCMEMBER_REC_MTU | > > + IB_SA_MCMEMBER_REC_HOP_LIMIT; > > + > > + rec.rate_selector = IB_SA_EQ; > > + rec.mtu_selector = IB_SA_EQ; > > + } > > So, the rdma cm joins a group without these set. The SA picks some values, > which differ from those used by ipoib. IPoIB then joins a group, which fails > because of the mismatch. Is this the problem?
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