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Commit 3fd0605c authored by Erez Shitrit's avatar Erez Shitrit Committed by Doug Ledford
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IB/ipoib: Update broadcast record values after each successful join request 



Update the cached broadcast record in the priv object after every new
join of this broadcast domain group.

These values are needed for the port configuration (MTU size) and to
all the new multicast (non-broadcast) join requests initial parameters.

For example, SM starts with 2K MTU for all the fabric, and after that it
restarts (or handover to new SM) with new port configuration of 4K MTU.
Without using the new values, the driver will keep its old configuration
of 2K and will not apply the new configuration of 4K.

Signed-off-by: default avatarErez Shitrit <erezsh@mellanox.com>
Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent a44878d1

drivers/infiniband/ulp/ipoib/ipoib_multicast.c

+17 −1
Original line number Diff line number Diff line
@@ -226,7 +226,23 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast, 
			spin_unlock_irq(&priv->lock);

			return -EAGAIN;

		}

		priv->mcast_mtu = IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu));

		/*update priv member according to the new mcast*/

		priv->broadcast->mcmember.qkey = mcmember->qkey;

		priv->broadcast->mcmember.mtu = mcmember->mtu;

		priv->broadcast->mcmember.traffic_class = mcmember->traffic_class;

		priv->broadcast->mcmember.rate = mcmember->rate;

		priv->broadcast->mcmember.sl = mcmember->sl;

		priv->broadcast->mcmember.flow_label = mcmember->flow_label;

		priv->broadcast->mcmember.hop_limit = mcmember->hop_limit;

		/* assume if the admin and the mcast are the same both can be changed */

		if (priv->mcast_mtu == priv->admin_mtu)

			priv->admin_mtu =

			priv->mcast_mtu =

			IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu));

		else

			priv->mcast_mtu =

			IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu));



		priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey);

		spin_unlock_irq(&priv->lock);

		priv->tx_wr.wr.ud.remote_qkey = priv->qkey;