text: /*
   * Copyright (c) 2017, 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 __MLX5E_IPOB_H__
  #define __MLX5E_IPOB_H__
  
  #ifdef CONFIG_MLX5_CORE_IPOIB
  
  #include <linux/mlx5/fs.h>
  #include "en.h"
  
  #define MLX5I_MAX_NUM_TC 1
  
  extern const struct ethtool_ops mlx5i_ethtool_ops;
  extern const struct ethtool_ops mlx5i_pkey_ethtool_ops;
  extern const struct mlx5e_rx_handlers mlx5i_rx_handlers;
  
  #define MLX5_IB_GRH_BYTES       40
  #define MLX5_IPOIB_ENCAP_LEN    4
  #define MLX5_IPOIB_PSEUDO_LEN   20
  #define MLX5_IPOIB_HARD_LEN     (MLX5_IPOIB_PSEUDO_LEN + MLX5_IPOIB_ENCAP_LEN)
  
  /* ipoib rdma netdev's private data structure */
  struct mlx5i_priv {
  	struct rdma_netdev rn; /* keep this first */
  	u32 qpn;
  	bool   sub_interface;
  	u32    qkey;
  	u16    pkey_index;
  	struct mlx5i_pkey_qpn_ht *qpn_htbl;
  	char  *mlx5e_priv[];
  };
  
  int mlx5i_create_tis(struct mlx5_core_dev *mdev, u32 underlay_qpn, u32 *tisn);
  
  /* Underlay QP create/destroy functions */
  int mlx5i_create_underlay_qp(struct mlx5e_priv *priv);
  void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, u32 qpn);
  
  /* Underlay QP state modification init/uninit functions */
  int mlx5i_init_underlay_qp(struct mlx5e_priv *priv);
  void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv);
  
  /* Allocate/Free underlay QPN to net-device hash table */
  int mlx5i_pkey_qpn_ht_init(struct net_device *netdev);
  void mlx5i_pkey_qpn_ht_cleanup(struct net_device *netdev);
  
  /* Add/Remove an underlay QPN to net-device mapping to/from the hash table */
  int mlx5i_pkey_add_qpn(struct net_device *netdev, u32 qpn);
  int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn);
  
  /* Get the net-device corresponding to the given underlay QPN */
  struct net_device *mlx5i_pkey_get_netdev(struct net_device *netdev, u32 qpn);
  
  /* Shared ndo functions */
  int mlx5i_dev_init(struct net_device *dev);
  void mlx5i_dev_cleanup(struct net_device *dev);
  int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
  
  /* Parent profile functions */
  int mlx5i_init(struct mlx5_core_dev *mdev,
  	       struct net_device *netdev,
  	       const struct mlx5e_profile *profile,
  	       void *ppriv);
  void mlx5i_cleanup(struct mlx5e_priv *priv);
  
  int mlx5i_update_nic_rx(struct mlx5e_priv *priv);
  
  /* Get child interface nic profile */
  const struct mlx5e_profile *mlx5i_pkey_get_profile(void);
  
  /* Extract mlx5e_priv from IPoIB netdev */
  #define mlx5i_epriv(netdev) ((void *)(((struct mlx5i_priv *)netdev_priv(netdev))->mlx5e_priv))
  
  struct mlx5_wqe_eth_pad {
  	u8 rsvd0[16];
  };
  
  struct mlx5i_tx_wqe {
  	struct mlx5_wqe_ctrl_seg     ctrl;
  	struct mlx5_wqe_datagram_seg datagram;
  	struct mlx5_wqe_eth_pad      pad;
  	struct mlx5_wqe_eth_seg      eth;
  	struct mlx5_wqe_data_seg     data[];
  };
  
  #define MLX5I_SQ_FETCH_WQE(sq, pi) \
  	((struct mlx5i_tx_wqe *)mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5i_tx_wqe)))
  
  void mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
  		   struct mlx5_av *av, u32 dqpn, u32 dqkey, bool xmit_more);
  void mlx5i_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats);
  
  #endif /* CONFIG_MLX5_CORE_IPOIB */
  #endif /* __MLX5E_IPOB_H__ */
  