• Björn Töpel's avatar
    bpf: introduce new bpf AF_XDP map type BPF_MAP_TYPE_XSKMAP · fbfc504a
    Björn Töpel authored
    The xskmap is yet another BPF map, very much inspired by
    dev/cpu/sockmap, and is a holder of AF_XDP sockets. A user application
    adds AF_XDP sockets into the map, and by using the bpf_redirect_map
    helper, an XDP program can redirect XDP frames to an AF_XDP socket.
    
    Note that a socket that is bound to certain ifindex/queue index will
    *only* accept XDP frames from that netdev/queue index. If an XDP
    program tries to redirect from a netdev/queue index other than what
    the socket is bound to, the frame will not be received on the socket.
    
    A socket can reside in multiple maps.
    
    v3: Fixed race and simplified code.
    v2: Removed one indirection in map lookup.
    Signed-off-by: 's avatarBjörn Töpel <bjorn.topel@intel.com>
    Signed-off-by: 's avatarAlexei Starovoitov <ast@kernel.org>
    fbfc504a
Makefile 748 Bytes