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IPoIB: Copy child MTU from parent

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When creating a child interface, copy the MTU information from the
parent.  Otherwise when the child's multicast join completes, the MTU
will not be updated since the code does

	dev->mtu = min(priv->mcast_mtu, priv->admin_mtu);

and priv->admin_mtu will be set to 0.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen 2008-04-29 13:46:53 -07:00 committed by Roland Dreier
parent baaad380c0
commit b4132efa1a
1 changed files with 3 additions and 0 deletions
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3
drivers/infiniband/ulp/ipoib/ipoib_vlan.c
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@ -90,6 +90,9 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
}
priv->max_ib_mtu = ppriv->max_ib_mtu;
/* MTU will be reset when mcast join happens */
priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
priv->pkey = pkey;