| /* |
| * Copyright (c) 2018, Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #ifndef __MLX5_EN_XDP_H__ |
| #define __MLX5_EN_XDP_H__ |
| |
| #include "en.h" |
| |
| #define MLX5E_XDP_MIN_INLINE (ETH_HLEN + VLAN_HLEN) |
| #define MLX5E_XDP_TX_DS_COUNT \ |
| ((sizeof(struct mlx5e_tx_wqe) / MLX5_SEND_WQE_DS) + 1 /* SG DS */) |
| |
| int mlx5e_xdp_max_mtu(struct mlx5e_params *params); |
| bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di, |
| void *va, u16 *rx_headroom, u32 *len); |
| bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq); |
| void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq); |
| |
| bool mlx5e_xmit_xdp_frame(struct mlx5e_xdpsq *sq, struct mlx5e_xdp_info *xdpi); |
| int mlx5e_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, |
| u32 flags); |
| |
| static inline void mlx5e_xdp_tx_enable(struct mlx5e_priv *priv) |
| { |
| set_bit(MLX5E_STATE_XDP_TX_ENABLED, &priv->state); |
| } |
| |
| static inline void mlx5e_xdp_tx_disable(struct mlx5e_priv *priv) |
| { |
| clear_bit(MLX5E_STATE_XDP_TX_ENABLED, &priv->state); |
| /* let other device's napi(s) see our new state */ |
| synchronize_rcu(); |
| } |
| |
| static inline bool mlx5e_xdp_tx_is_enabled(struct mlx5e_priv *priv) |
| { |
| return test_bit(MLX5E_STATE_XDP_TX_ENABLED, &priv->state); |
| } |
| |
| static inline void mlx5e_xmit_xdp_doorbell(struct mlx5e_xdpsq *sq) |
| { |
| struct mlx5_wq_cyc *wq = &sq->wq; |
| struct mlx5e_tx_wqe *wqe; |
| u16 pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc - 1); /* last pi */ |
| |
| wqe = mlx5_wq_cyc_get_wqe(wq, pi); |
| |
| mlx5e_notify_hw(wq, sq->pc, sq->uar_map, &wqe->ctrl); |
| } |
| |
| #endif |