From 84adeee9aaa0d81712de1e0ea74caed3398e4a1d Mon Sep 17 00:00:00 2001 From: Yossi Etigin Date: Wed, 1 Apr 2009 13:55:32 -0700 Subject: [PATCH] RDMA/cma: Use rate from IPoIB broadcast when joining IPoIB multicast groups When joining an IPoIB multicast group, use the same rate as in the broadcast group. Otherwise, if the RDMA CM creates this group before IPoIB does, it might get a different rate. This will cause IPoIB to fail joining to the same group later on, because IPoIB uses strict rate selection. Signed-off-by: Yossi Etigin Signed-off-by: Roland Dreier --- drivers/infiniband/core/cma.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 2a2e50871b40..3f9c03a36571 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -2713,6 +2713,10 @@ 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) + comp_mask |= IB_SA_MCMEMBER_REC_RATE | + IB_SA_MCMEMBER_REC_RATE_SELECTOR; + mc->multicast.ib = ib_sa_join_multicast(&sa_client, id_priv->id.device, id_priv->id.port_num, &rec, comp_mask, GFP_KERNEL, -- 2.20.1