netdev - [net-next 03/16] net/mlx5e: Remove unused fields from datapath structs

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Date:   Tue, 27 Sep 2022 13:35:58 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Maxim Mikityanskiy <maximmi@...dia.com>
Subject: [net-next 03/16] net/mlx5e: Remove unused fields from datapath structs

From: Maxim Mikityanskiy <maximmi@...dia.com>

No need to keep max_sq_wqebbs in mlx5e_txqsq and mlx5e_xdpsq, as it's
only used when allocating the queues. Removing an extra field reduces
the struct size.

Signed-off-by: Maxim Mikityanskiy <maximmi@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Reviewed-by: Saeed Mahameed <saeedm@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h      |  2 --
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 10 +++++-----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 05126c6ae13d..881e406d8757 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -478,7 +478,6 @@ struct mlx5e_txqsq {
 	struct work_struct         recover_work;
 	struct mlx5e_ptpsq        *ptpsq;
 	cqe_ts_to_ns               ptp_cyc2time;
-	u16                        max_sq_wqebbs;
 } ____cacheline_aligned_in_smp;
 
 struct mlx5e_dma_info {
@@ -582,7 +581,6 @@ struct mlx5e_xdpsq {
 	/* control path */
 	struct mlx5_wq_ctrl        wq_ctrl;
 	struct mlx5e_channel      *channel;
-	u16                        max_sq_wqebbs;
 } ____cacheline_aligned_in_smp;
 
 struct mlx5e_ktls_resync_resp;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 4503de92ac80..47d0bd6ab98e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1155,9 +1155,9 @@ static int mlx5e_alloc_xdpsq(struct mlx5e_channel *c,
 		is_redirect ?
 			&c->priv->channel_stats[c->ix]->xdpsq :
 			&c->priv->channel_stats[c->ix]->rq_xdpsq;
-	sq->max_sq_wqebbs = mlx5e_get_max_sq_wqebbs(mdev);
-	sq->stop_room = MLX5E_STOP_ROOM(sq->max_sq_wqebbs);
-	sq->max_sq_mpw_wqebbs = mlx5e_get_sw_max_sq_mpw_wqebbs(sq->max_sq_wqebbs);
+	sq->stop_room = MLX5E_STOP_ROOM(mlx5e_get_max_sq_wqebbs(mdev));
+	sq->max_sq_mpw_wqebbs =
+		mlx5e_get_sw_max_sq_mpw_wqebbs(mlx5e_get_max_sq_wqebbs(mdev));
 
 	param->wq.db_numa_node = cpu_to_node(c->cpu);
 	err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, wq, &sq->wq_ctrl);
@@ -1318,8 +1318,8 @@ static int mlx5e_alloc_txqsq(struct mlx5e_channel *c,
 	sq->uar_map   = mdev->mlx5e_res.hw_objs.bfreg.map;
 	sq->min_inline_mode = params->tx_min_inline_mode;
 	sq->hw_mtu    = MLX5E_SW2HW_MTU(params, params->sw_mtu);
-	sq->max_sq_wqebbs = mlx5e_get_max_sq_wqebbs(mdev);
-	sq->max_sq_mpw_wqebbs = mlx5e_get_sw_max_sq_mpw_wqebbs(sq->max_sq_wqebbs);
+	sq->max_sq_mpw_wqebbs =
+		mlx5e_get_sw_max_sq_mpw_wqebbs(mlx5e_get_max_sq_wqebbs(mdev));
 	INIT_WORK(&sq->recover_work, mlx5e_tx_err_cqe_work);
 	if (!MLX5_CAP_ETH(mdev, wqe_vlan_insert))
 		set_bit(MLX5E_SQ_STATE_VLAN_NEED_L2_INLINE, &sq->state);
-- 
2.37.3