[openib-general] Dropping NETIF_F_SG since no checksum feature.

[David Miller]

From: "Michael S. Tsirkin" <mst at mellanox.co.il>
Date: Wed, 11 Oct 2006 11:05:04 +0200

> So, it seems that if I set NETIF_F_SG but clear NETIF_F_ALL_CSUM,
> data will be copied over rather than sent directly.
> So why does dev.c have to force set NETIF_F_SG to off then?

Because it's more efficient to copy into a linear destination
buffer of an SKB than page sub-chunks when doing checksum+copy.