1/*
  2 * Copyright (c) 2017, Mellanox Technologies. All rights reserved.
  3 *
  4 * This software is available to you under a choice of one of two
  5 * licenses.  You may choose to be licensed under the terms of the GNU
  6 * General Public License (GPL) Version 2, available from the file
  7 * COPYING in the main directory of this source tree, or the
  8 * OpenIB.org BSD license below:
  9 *
 10 *     Redistribution and use in source and binary forms, with or
 11 *     without modification, are permitted provided that the following
 12 *     conditions are met:
 13 *
 14 *      - Redistributions of source code must retain the above
 15 *        copyright notice, this list of conditions and the following
 16 *        disclaimer.
 17 *
 18 *      - Redistributions in binary form must reproduce the above
 19 *        copyright notice, this list of conditions and the following
 20 *        disclaimer in the documentation and/or other materials
 21 *        provided with the distribution.
 22 *
 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 30 * SOFTWARE.
 31 */
 32
 33#ifndef __MLX5E_IPOB_H__
 34#define __MLX5E_IPOB_H__
 35
 36#ifdef CONFIG_MLX5_CORE_IPOIB
 37
 38#include <linux/mlx5/fs.h>
 39#include "en.h"
 40
 41#define MLX5I_MAX_NUM_TC 1
 42
 43extern const struct ethtool_ops mlx5i_ethtool_ops;
 44extern const struct ethtool_ops mlx5i_pkey_ethtool_ops;
 45extern const struct mlx5e_rx_handlers mlx5i_rx_handlers;
 46
 47#define MLX5_IB_GRH_BYTES       40
 48#define MLX5_IPOIB_ENCAP_LEN    4
 49#define MLX5_IPOIB_PSEUDO_LEN   20
 50#define MLX5_IPOIB_HARD_LEN     (MLX5_IPOIB_PSEUDO_LEN + MLX5_IPOIB_ENCAP_LEN)
 51
 52/* ipoib rdma netdev's private data structure */
 53struct mlx5i_priv {
 54	struct rdma_netdev rn; /* keep this first */
 55	u32 qpn;
 56	u32 tisn;
 57	bool   sub_interface;
 58	u32    num_sub_interfaces;
 59	u32    qkey;
 60	u16    pkey_index;
 61	struct mlx5i_pkey_qpn_ht *qpn_htbl;
 62	struct net_device *parent_dev;
 63	char  *mlx5e_priv[];
 64};
 65
 66int mlx5i_create_tis(struct mlx5_core_dev *mdev, u32 underlay_qpn, u32 *tisn);
 67u32 mlx5i_get_tisn(struct mlx5_core_dev *mdev, struct mlx5e_priv *priv, u8 lag_port, u8 tc);
 68
 69/* Underlay QP create/destroy functions */
 70int mlx5i_create_underlay_qp(struct mlx5e_priv *priv);
 71void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, u32 qpn);
 72
 73/* Underlay QP state modification init/uninit functions */
 74int mlx5i_init_underlay_qp(struct mlx5e_priv *priv);
 75void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv);
 76
 77/* Allocate/Free underlay QPN to net-device hash table */
 78int mlx5i_pkey_qpn_ht_init(struct net_device *netdev);
 79void mlx5i_pkey_qpn_ht_cleanup(struct net_device *netdev);
 80
 81/* Add/Remove an underlay QPN to net-device mapping to/from the hash table */
 82int mlx5i_pkey_add_qpn(struct net_device *netdev, u32 qpn);
 83int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn);
 84
 85/* Get the net-device corresponding to the given underlay QPN */
 86struct net_device *mlx5i_pkey_get_netdev(struct net_device *netdev, u32 qpn);
 87
 88/* Shared ndo functions */
 89int mlx5i_dev_init(struct net_device *dev);
 90void mlx5i_dev_cleanup(struct net_device *dev);
 91int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
 92
 93/* Parent profile functions */
 94int mlx5i_init(struct mlx5_core_dev *mdev, struct net_device *netdev);
 95void mlx5i_cleanup(struct mlx5e_priv *priv);
 96
 97int mlx5i_update_nic_rx(struct mlx5e_priv *priv);
 98
 99/* Get child interface nic profile */
100const struct mlx5e_profile *mlx5i_pkey_get_profile(void);
101
102/* Extract mlx5e_priv from IPoIB netdev */
103#define mlx5i_epriv(netdev) ((void *)(((struct mlx5i_priv *)netdev_priv(netdev))->mlx5e_priv))
104
105struct mlx5_wqe_eth_pad {
106	u8 rsvd0[16];
107};
108
109struct mlx5i_tx_wqe {
110	struct mlx5_wqe_ctrl_seg     ctrl;
111	struct mlx5_wqe_datagram_seg datagram;
112	struct mlx5_wqe_eth_pad      pad;
113	struct mlx5_wqe_eth_seg      eth;
114	struct mlx5_wqe_data_seg     data[];
115};
116
117#define MLX5I_SQ_FETCH_WQE(sq, pi) \
118	((struct mlx5i_tx_wqe *)mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5i_tx_wqe)))
119
120void mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
121		   struct mlx5_av *av, u32 dqpn, u32 dqkey, bool xmit_more);
122void mlx5i_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats);
123
124/* Reference management for child to parent interfaces. */
125struct net_device *mlx5i_parent_get(struct net_device *netdev);
126void mlx5i_parent_put(struct net_device *netdev);
127
128#endif /* CONFIG_MLX5_CORE_IPOIB */
129#endif /* __MLX5E_IPOB_H__ */