[net-next V7 PATCH 10/16] mlx5: register a memory model when XDP is enabled

[Jesper Dangaard Brouer]

Now all the users of ndo_xdp_xmit have been converted to use xdp_return_frame.
This enable a different memory model, thus activating another code path
in the xdp_return_frame API.

V2: Fixed issues pointed out by Tariq.

Signed-off-by: Jesper Dangaard Brouer <bro...@redhat.com>
Reviewed-by: Tariq Toukan <tar...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 1d36d7569f44..7ffd05366642 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -506,6 +506,14 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c,
                rq->mkey_be = c->mkey_be;
        }
 
+       /* This must only be activate for order-0 pages */
+       if (rq->xdp_prog) {
+               err = xdp_rxq_info_reg_mem_model(&rq->xdp_rxq,
+                                                MEM_TYPE_PAGE_ORDER0, NULL);
+               if (err)
+                       goto err_rq_wq_destroy;
+       }
+
        for (i = 0; i < wq_sz; i++) {
                struct mlx5e_rx_wqe *wqe = mlx5_wq_ll_get_wqe(&rq->wq, i);