Commit 996e8021 authored May 02, 2016 by Alexander Duyck Committed by David S. Miller May 03, 2016

net: Disable segmentation if checksumming is not supported



In the case of the mlx4 and mlx5 driver they do not support IPv6 checksum
offload for tunnels.  With this being the case we should disable GSO in
addition to the checksum offload features when we find that a device cannot
perform a checksum on a given packet type.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 0e28bf93

net/core/dev.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2802,7 +2802,7 @@ static netdev_features_t harmonize_features(struct sk_buff *skb,

		if (skb->ip_summed != CHECKSUM_NONE &&
		!can_checksum_protocol(features, type)) {
		features &= ~NETIF_F_CSUM_MASK;
		features &= ~(NETIF_F_CSUM_MASK \| NETIF_F_GSO_MASK);
		} else if (illegal_highdma(skb->dev, skb)) {
		features &= ~NETIF_F_SG;
		}

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