i40e: report BPF prog id during XDP_QUERY_PROG

Fill the XDP prog_id with the id just like we do in other XDP enabled
drivers such as ixgbe. This is needed so that on dump we can retrieve
the attached program based on the id, and dump BPF insns, opcodes, etc
back to user space. Only XDP driver missing this is currently i40e.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 2b115b0c5296757751f5743d65280ec9ab2dda95..4104944ea36709120709a6e347f2af1abcdd20ff 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -9601,6 +9601,7 @@ static int i40e_xdp(struct net_device *dev,
                return i40e_xdp_setup(vsi, xdp->prog);
        case XDP_QUERY_PROG:
                xdp->prog_attached = i40e_enabled_xdp_vsi(vsi);
+               xdp->prog_id = vsi->xdp_prog ? vsi->xdp_prog->aux->id : 0;
                return 0;
        default:
                return -EINVAL;