• Björn Töpel's avatar
    i40e: add AF_XDP zero-copy Rx support · 0a714186
    Björn Töpel authored
    This patch adds zero-copy Rx support for AF_XDP sockets. Instead of
    allocating buffers of type MEM_TYPE_PAGE_SHARED, the Rx frames are
    allocated as MEM_TYPE_ZERO_COPY when AF_XDP is enabled for a certain
    queue.
    
    All AF_XDP specific functions are added to a new file, i40e_xsk.c.
    
    Note that when AF_XDP zero-copy is enabled, the XDP action XDP_PASS
    will allocate a new buffer and copy the zero-copy frame prior passing
    it to the kernel stack.
    Signed-off-by: default avatarBjörn Töpel <bjorn.topel@intel.com>
    Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
    0a714186
i40e.h 35 KB