bpf: bnxt: Report bpf_prog ID during XDP_QUERY_PROG

Add support to bnxt to report bpf_prog ID during XDP_QUERY_PROG.
Signed-off-by: NMartin KaFai Lau <kafai@fb.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Acked-by: NAlexei Starovoitov <ast@fb.com>
Acked-by: NDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c

@@ -218,6 +218,7 @@ int bnxt_xdp(struct net_device *dev, struct netdev_xdp *xdp)
 		break;
 	case XDP_QUERY_PROG:
 		xdp->prog_attached = !!bp->xdp_prog;
+		xdp->prog_id = bp->xdp_prog ? bp->xdp_prog->aux->id : 0;
 		rc = 0;
 		break;
 	default: