Both variants of skge (drivers/net and drivers/net/sk98lin/ resp.) have the same problem with rx checksums. They pick checksum from rx descriptor and use it as-is. Normally that would be the right thing to do. However, skge is told to byteswap descriptors on big-endian boxen.
Checksum is fixed-endian and we want it that way; IOW, what we end up storing in skb->csum should be fixed-endian as well. Unless the card is smart enough to byteswap everything in rx descriptor _except_ the checksum, we have a trouble - we get a value converted to host-endian by the general byteswap in descriptor and we must convert it to fixed-endian ourselves. FWIW, FreeBSD sk_if sidesteps that mess by not telling the card to byteswap, so that's not too informative. Datasheet on http://people.freebsd.org/~wpaul/SysKonnect/xmacii_datasheet_rev_c_9-29.pdf is not clear on what's going on with checksum in byteswapping mode either... Could somebody with that sucker on a card (all instances I have here are on-board ones in little-endian boxen) test what's really going on for big-endian hosts with either driver? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
