LXR linux/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.h

   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        bool   sub_interface;
  57        u32    qkey;
  58        u16    pkey_index;
  59        struct mlx5i_pkey_qpn_ht *qpn_htbl;
  60        char  *mlx5e_priv[];
  61};
  62
  63int mlx5i_create_tis(struct mlx5_core_dev *mdev, u32 underlay_qpn, u32 *tisn);
  64
  65/* Underlay QP create/destroy functions */
  66int mlx5i_create_underlay_qp(struct mlx5e_priv *priv);
  67void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, u32 qpn);
  68
  69/* Underlay QP state modification init/uninit functions */
  70int mlx5i_init_underlay_qp(struct mlx5e_priv *priv);
  71void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv);
  72
  73/* Allocate/Free underlay QPN to net-device hash table */
  74int mlx5i_pkey_qpn_ht_init(struct net_device *netdev);
  75void mlx5i_pkey_qpn_ht_cleanup(struct net_device *netdev);
  76
  77/* Add/Remove an underlay QPN to net-device mapping to/from the hash table */
  78int mlx5i_pkey_add_qpn(struct net_device *netdev, u32 qpn);
  79int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn);
  80
  81/* Get the net-device corresponding to the given underlay QPN */
  82struct net_device *mlx5i_pkey_get_netdev(struct net_device *netdev, u32 qpn);
  83
  84/* Shared ndo functions */
  85int mlx5i_dev_init(struct net_device *dev);
  86void mlx5i_dev_cleanup(struct net_device *dev);
  87int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
  88
  89/* Parent profile functions */
  90int mlx5i_init(struct mlx5_core_dev *mdev,
  91               struct net_device *netdev,
  92               const struct mlx5e_profile *profile,
  93               void *ppriv);
  94void mlx5i_cleanup(struct mlx5e_priv *priv);
  95
  96int mlx5i_update_nic_rx(struct mlx5e_priv *priv);
  97
  98/* Get child interface nic profile */
  99const struct mlx5e_profile *mlx5i_pkey_get_profile(void);
 100
 101/* Extract mlx5e_priv from IPoIB netdev */
 102#define mlx5i_epriv(netdev) ((void *)(((struct mlx5i_priv *)netdev_priv(netdev))->mlx5e_priv))
 103
 104struct mlx5_wqe_eth_pad {
 105        u8 rsvd0[16];
 106};
 107
 108struct mlx5i_tx_wqe {
 109        struct mlx5_wqe_ctrl_seg     ctrl;
 110        struct mlx5_wqe_datagram_seg datagram;
 111        struct mlx5_wqe_eth_pad      pad;
 112        struct mlx5_wqe_eth_seg      eth;
 113        struct mlx5_wqe_data_seg     data[];
 114};
 115
 116#define MLX5I_SQ_FETCH_WQE(sq, pi) \
 117        ((struct mlx5i_tx_wqe *)mlx5e_fetch_wqe(&(sq)->wq, pi, sizeof(struct mlx5i_tx_wqe)))
 118
 119void mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
 120                   struct mlx5_av *av, u32 dqpn, u32 dqkey, bool xmit_more);
 121void mlx5i_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats);
 122
 123#endif /* CONFIG_MLX5_CORE_IPOIB */
 124#endif /* __MLX5E_IPOB_H__ */
 125