• Quentin Monnet's avatar
    bpf: pass a struct with offload callbacks to bpf_offload_dev_create() · 1385d755
    Quentin Monnet authored
    For passing device functions for offloaded eBPF programs, there used to
    be no place where to store the pointer without making the non-offloaded
    programs pay a memory price.
    
    As a consequence, three functions were called with ndo_bpf() through
    specific commands. Now that we have struct bpf_offload_dev, and since
    none of those operations rely on RTNL, we can turn these three commands
    into hooks inside the struct bpf_prog_offload_ops, and pass them as part
    of bpf_offload_dev_create().
    
    This commit effectively passes a pointer to the struct to
    bpf_offload_dev_create(). We temporarily have two struct
    bpf_prog_offload_ops instances, one under offdev->ops and one under
    offload->dev_ops. The next patches will make the transition towards the
    former, so that offload->dev_ops can be removed, and callbacks relying
    on ndo_bpf() added to offdev->ops as well.
    
    While at it, rename "nfp_bpf_analyzer_ops" as "nfp_bpf_dev_ops" (and
    similarly for netdevsim).
    Suggested-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
    Signed-off-by: default avatarQuentin Monnet <quentin.monnet@netronome.com>
    Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
    Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
    1385d755
main.c 12.5 KB