net/mlx5e: Pass only eseg to IPSEC offload

IPSEC offload needs to modify the eseg of the WQE that is being filled,
but it receives a pointer to the whole WQE. To make the contract
stricter, pass only the pointer to the eseg of that WQE. This commit is
preparation for the following refactoring of offloads in the TX path and
for the MPWQE support.
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en_accel/en_accel.h

@@ -117,7 +117,7 @@ static inline bool mlx5e_accel_handle_tx(struct sk_buff *skb,
 
 #ifdef CONFIG_MLX5_EN_IPSEC
 	if (test_bit(MLX5E_SQ_STATE_IPSEC, &sq->state)) {
-		if (unlikely(!mlx5e_ipsec_handle_tx_skb(dev, *wqe, skb)))
+		if (unlikely(!mlx5e_ipsec_handle_tx_skb(dev, &(*wqe)->eth, skb)))
 			return false;
 	}
 #endif

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.c

@@ -234,7 +234,7 @@ static void mlx5e_ipsec_set_metadata(struct sk_buff *skb,
 }
 
 bool mlx5e_ipsec_handle_tx_skb(struct net_device *netdev,
-			       struct mlx5e_tx_wqe *wqe,
+			       struct mlx5_wqe_eth_seg *eseg,
 			       struct sk_buff *skb)
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
@@ -276,7 +276,7 @@ bool mlx5e_ipsec_handle_tx_skb(struct net_device *netdev,
 		atomic64_inc(&priv->ipsec->sw_stats.ipsec_tx_drop_metadata);
 		goto drop;
 	}
-	mlx5e_ipsec_set_swp(skb, &wqe->eth, x->props.mode, xo);
+	mlx5e_ipsec_set_swp(skb, eseg, x->props.mode, xo);
 	sa_entry = (struct mlx5e_ipsec_sa_entry *)x->xso.offload_handle;
 	sa_entry->set_iv_op(skb, x, xo);
 	mlx5e_ipsec_set_metadata(skb, mdata, xo);

drivers/net/ethernet/mellanox/mlx5/core/en_accel/ipsec_rxtx.h

@@ -53,7 +53,7 @@ void mlx5e_ipsec_set_iv_esn(struct sk_buff *skb, struct xfrm_state *x,
 void mlx5e_ipsec_set_iv(struct sk_buff *skb, struct xfrm_state *x,
 			struct xfrm_offload *xo);
 bool mlx5e_ipsec_handle_tx_skb(struct net_device *netdev,
-			       struct mlx5e_tx_wqe *wqe,
+			       struct mlx5_wqe_eth_seg *eseg,
 			       struct sk_buff *skb);
 
 #endif /* CONFIG_MLX5_EN_IPSEC */