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Commit edcd2a74 authored by Erez Shitrit's avatar Erez Shitrit Committed by Doug Ledford
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IB/ipoib: Set MTU to max allowed by mode when mode changes 



When switching between modes (datagram / connected) change the MTU
accordingly.
datagram mode up to 4K, connected mode up to (64K - 0x10).

Signed-off-by: default avatarELi Cohen <eli@mellanox.com>
Signed-off-by: default avatarErez Shitrit <erezsh@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent c4268778

drivers/infiniband/ulp/ipoib/ipoib_main.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -232,6 +232,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf) 
		ipoib_warn(priv, "enabling connected mode "

		ipoib_warn(priv, "enabling connected mode "

			   "will cause multicast packet drops\n");

			   "will cause multicast packet drops\n");

		netdev_update_features(dev);

		netdev_update_features(dev);

		dev_set_mtu(dev, ipoib_cm_max_mtu(dev));

		rtnl_unlock();

		rtnl_unlock();

		priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;

		priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;