[PATCH net-next 05/10] bpf: bnxt: Report bpf_prog ID during XDP_QUERY_PROG

[Martin KaFai Lau]

Add support to bnxt to report bpf_prog ID during XDP_QUERY_PROG.

Signed-off-by: Martin KaFai Lau <ka...@fb.com>
Cc: Michael Chan <michael.c...@broadcom.com>
Acked-by: Alexei Starovoitov <a...@fb.com>
Acked-by: Daniel Borkmann <dan...@iogearbox.net>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
index 8ce793a0d030..5bf1c7ddb378 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c
@@ -216,10 +216,17 @@ int bnxt_xdp(struct net_device *dev, struct netdev_xdp 
*xdp)
        case XDP_SETUP_PROG:
                rc = bnxt_xdp_set(bp, xdp->prog);
                break;
-       case XDP_QUERY_PROG:
-               xdp->prog_attached = !!bp->xdp_prog;
+       case XDP_QUERY_PROG: {
+               const struct bpf_prog *xdp_prog;
+
+               xdp_prog = READ_ONCE(bp->xdp_prog);
+               if (xdp_prog)
+                       xdp->prog_id = xdp_prog->aux->id;
+               else
+                       xdp->prog_id = 0;
                rc = 0;
                break;
+       }
        default:
                rc = -EINVAL;
                break;
-- 
2.9.3