[ofa-general] Re: Can Mellanox cards handle scatter gather I/O?

[chas williams - CONTRACTOR]

In message <20070815060547.GB24899 at mellanox.co.il>,"Michael S. Tsirkin" writes:
>        if ((dev->features & NETIF_F_SG) &&
>            !(dev->features & NETIF_F_ALL_CSUM)) {
>                printk(KERN_NOTICE "%s: Dropping NETIF_F_SG since no checksum 
>feature.\n",
>                       dev->name);
>                dev->features &= ~NETIF_F_SG;
>        }
>
>we can work around this code in OFED, but I think it would
>make sense to first have a discussion on netdev and lkml list about why is
>this code there in the first place.

as i recall, preferred software combined copy and checksum routine doesnt
typically handle scatter/gather.