net/mlx5e: xsk: Remove dead code in validation

One of the checks in mlx5e_rx_is_linear_skb verifies that the RX buffer
fits into the XSK frame size. Remove the duplicating check from
mlx5e_validate_xsk_param. It allows to make mlx5e_rx_get_min_frag_sz
static.

Remove mlx5e_rx_is_xdp altogether, as its only usage is located in a
branch where xsk == NULL.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
index bb039c3..c9a4a50 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
@@ -7,12 +7,6 @@
 #include "en_accel/en_accel.h"
 #include "en_accel/ipsec.h"
 
-static bool mlx5e_rx_is_xdp(struct mlx5e_params *params,
-                           struct mlx5e_xsk_param *xsk)
-{
-       return params->xdp_prog || xsk;
-}
-
 u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
                                 struct mlx5e_xsk_param *xsk)
 {
@@ -22,7 +16,7 @@ u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
                return xsk->headroom;
 
        headroom = NET_IP_ALIGN;
-       if (mlx5e_rx_is_xdp(params, xsk))
+       if (params->xdp_prog)
                headroom += XDP_PACKET_HEADROOM;
        else
                headroom += MLX5_RX_HEADROOM;
@@ -30,8 +24,8 @@ u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
        return headroom;
 }
 
-u32 mlx5e_rx_get_min_frag_sz(struct mlx5e_params *params,
-                            struct mlx5e_xsk_param *xsk)
+static u32 mlx5e_rx_get_min_frag_sz(struct mlx5e_params *params,
+                                   struct mlx5e_xsk_param *xsk)
 {
        u32 hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
        u16 linear_rq_headroom = mlx5e_get_linear_rq_headroom(params, xsk);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.h b/drivers/net/ethernet/mellanox/mlx5/core/en/params.h
index 6e86cbf..3e148a0 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/params.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.h
@@ -101,8 +101,6 @@ void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev, struct mlx5e_params *
 
 u16 mlx5e_get_linear_rq_headroom(struct mlx5e_params *params,
                                 struct mlx5e_xsk_param *xsk);
-u32 mlx5e_rx_get_min_frag_sz(struct mlx5e_params *params,
-                            struct mlx5e_xsk_param *xsk);
 u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params,
                                struct mlx5e_xsk_param *xsk);
 bool mlx5e_rx_is_linear_skb(struct mlx5e_params *params,

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
index 0b3c9f1..c7c25f2 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xsk/setup.c
@@ -21,10 +21,6 @@ bool mlx5e_validate_xsk_param(struct mlx5e_params *params,
                        xsk->chunk_size < MLX5E_MIN_XSK_CHUNK_SIZE)
                return false;
 
-       /* Current MTU and XSK headroom don't allow packets to fit the frames. */
-       if (mlx5e_rx_get_min_frag_sz(params, xsk) > xsk->chunk_size)
-               return false;
-
        /* frag_sz is different for regular and XSK RQs, so ensure that linear
         * SKB mode is possible.
         */