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net: Fix netdev_fix_features so that TSO_MANGLEID is only available with TSO 

This change makes it so that we will strip the TSO_MANGLEID bit if TSO is
not present.  This way we will also handle ECN correctly of TSO is not
present.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Alexander Duyck 2016-05-02 09:38:24 -07:00 committed by David S. Miller
parent 36c983824b
commit b1dc497b28
1 changed files with 4 additions and 0 deletions
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4
net/core/dev.c
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@ -6721,6 +6721,10 @@ static netdev_features_t netdev_fix_features(struct net_device *dev,
features &= ~NETIF_F_TSO6;
}
/* TSO with IPv4 ID mangling requires IPv4 TSO be enabled */
if ((features & NETIF_F_TSO_MANGLEID) && !(features & NETIF_F_TSO))
features &= ~NETIF_F_TSO_MANGLEID;
/* TSO ECN requires that TSO is present as well. */
if ((features & NETIF_F_ALL_TSO) == NETIF_F_TSO_ECN)
features &= ~NETIF_F_TSO_ECN;