> Unfortunately, the Cadence MACB doesn't support the enabling or > disabling of checksum generation per descriptor.
So how does packet forwarding work ? If that means the device is re-checksumming packets it is forwarding then that's really not very good at all, especially if it takes frames that are unchecksummed and corrupts them with a checksum midflight which is based upon unknown validity. Other question: you seem to be assuming that the headers in part are valid. That's not necessarily the case (even for local traffic you can get UDP frames sent via RAW sockets that are invalid - eg with the ihl pointing beyond the end of the packet). Given you then write into that offset isn't a length check needed. That might also be a useful fast path for longer frames, as you know the worst case length for a 2 byte UDP frame. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/