On Tue, Oct 31, 2017 at 5:41 AM, Björn Töpel wrote:
> From: Björn Töpel
>
> +/*
> + * struct tpacket_memreg_req is used in conjunction with PACKET_MEMREG
> + * to register user memory which should be used to store the packet
> + * data.
> + *
> + * There are some constraints for the memory being
>
> Actually, we started out with that approach, where the packet_mmap
> call mapped Tx/Rx descriptor rings and the packet buffer region. We
> later moved to this (register umem) approach, because it's more
> flexible for user space, not having to use a AF_PACKET specific
> allocator (i.e. continue
