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s390/qeth: switch on SG by default for IQD devices 

Scatter-gather transmit brings a nice performance boost. Considering the
rather large MTU sizes at play, it's also totally the Right Thing To Do.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2018-09-12 15:31:33 +02:00 committed by David S. Miller
parent 778b1ac737
commit 04db741d0d
1 changed files with 2 additions and 0 deletions
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2
drivers/s390/net/qeth_core_main.c
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@ -5706,6 +5706,8 @@ static struct net_device *qeth_alloc_netdev(struct qeth_card *card)
dev->priv_flags &= ~IFF_TX_SKB_SHARING;
dev->hw_features |= NETIF_F_SG;
dev->vlan_features |= NETIF_F_SG;
if (IS_IQD(card))
dev->features |= NETIF_F_SG;
}
return dev;