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IB/ipoib: Set MTU to max allowed by mode when mode changes

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

Signed-off-by: ELi Cohen <[email protected]>
Signed-off-by: Erez Shitrit <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
This commit is contained in:
Erez Shitrit 2015-06-07 13:36:11 +03:00 • committed by Doug Ledford
commit edcd2a7474
1 changed files with 1 additions and 0 deletions
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1
drivers/infiniband/ulp/ipoib/ipoib_main.c
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@ -232,6 +232,7 @@ int ipoib_set_mode(struct net_device *dev, const char *buf)
ipoib_warn(priv, "enabling connected mode "
"will cause multicast packet drops\n");
netdev_update_features(dev);
dev_set_mtu(dev, ipoib_cm_max_mtu(dev));
rtnl_unlock();
priv->tx_wr.send_flags &= ~IB_SEND_IP_CSUM;