From: Roland Dreier Date: Fri, 22 Sep 2006 22:22:56 +0000 (-0700) Subject: IPoIB: Create MCGs with all attributes required by RFC X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d0df6d6d4539241179a1ef5394787825bf05bbce;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git IPoIB: Create MCGs with all attributes required by RFC RFC 4391 ("Transmission of IP over InfiniBand (IPoIB)") says: If the IB multicast group does not already exist, one must be created first with the IPoIB link MTU. The MGID MUST use the same P_Key, Q_Key, SL, MTU, and HopLimit as those used in the broadcast-GID. The rest of attributes SHOULD follow the values used in the broadcast-GID as well. However, the current IPoIB driver is only setting the attributes required by the InfiniBand spec to create a multicast group, so in particular the MTU and HopLimit are not being set. Add these attributes when creating MCGs, and also set the Rate attribute, since IPoIB pays attention to that attribute as well. Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index fb3e4875a46d..3faa1820f0e9 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -472,15 +472,25 @@ static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast, if (create) { comp_mask |= - IB_SA_MCMEMBER_REC_QKEY | - IB_SA_MCMEMBER_REC_SL | - IB_SA_MCMEMBER_REC_FLOW_LABEL | - IB_SA_MCMEMBER_REC_TRAFFIC_CLASS; + IB_SA_MCMEMBER_REC_QKEY | + IB_SA_MCMEMBER_REC_MTU_SELECTOR | + IB_SA_MCMEMBER_REC_MTU | + IB_SA_MCMEMBER_REC_TRAFFIC_CLASS | + IB_SA_MCMEMBER_REC_RATE_SELECTOR | + IB_SA_MCMEMBER_REC_RATE | + IB_SA_MCMEMBER_REC_SL | + IB_SA_MCMEMBER_REC_FLOW_LABEL | + IB_SA_MCMEMBER_REC_HOP_LIMIT; rec.qkey = priv->broadcast->mcmember.qkey; + rec.mtu_selector = IB_SA_EQ; + rec.mtu = priv->broadcast->mcmember.mtu; + rec.traffic_class = priv->broadcast->mcmember.traffic_class; + rec.rate_selector = IB_SA_EQ; + rec.rate = priv->broadcast->mcmember.rate; rec.sl = priv->broadcast->mcmember.sl; rec.flow_label = priv->broadcast->mcmember.flow_label; - rec.traffic_class = priv->broadcast->mcmember.traffic_class; + rec.hop_limit = priv->broadcast->mcmember.hop_limit; } init_completion(&mcast->done);