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;
  45
  46#define MLX5_IB_GRH_BYTES       40
  47#define MLX5_IPOIB_ENCAP_LEN    4
  48#define MLX5_IPOIB_PSEUDO_LEN   20
  49#define MLX5_IPOIB_HARD_LEN     (MLX5_IPOIB_PSEUDO_LEN + MLX5_IPOIB_ENCAP_LEN)
  50
  51/* ipoib rdma netdev's private data structure */
  52struct mlx5i_priv {
  53        struct rdma_netdev rn; /* keep this first */
  54        struct mlx5_core_qp qp;
  55        bool   sub_interface;
  56        u32    qkey;
  57        u16    pkey_index;
  58        struct mlx5i_pkey_qpn_ht *qpn_htbl;
  59        char  *mlx5e_priv[0];
  60};
  61
  62/* Underlay QP create/destroy functions */
  63int mlx5i_create_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp);
  64void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp);
  65
  66/* Underlay QP state modification init/uninit functions */
  67int mlx5i_init_underlay_qp(struct mlx5e_priv *priv);
  68void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv);
  69
  70/* Allocate/Free underlay QPN to net-device hash table */
  71int mlx5i_pkey_qpn_ht_init(struct net_device *netdev);
  72void mlx5i_pkey_qpn_ht_cleanup(struct net_device *netdev);
  73
  74/* Add/Remove an underlay QPN to net-device mapping to/from the hash table */
  75int mlx5i_pkey_add_qpn(struct net_device *netdev, u32 qpn);
  76int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn);
  77
  78/* Get the net-device corresponding to the given underlay QPN */
  79struct net_device *mlx5i_pkey_get_netdev(struct net_device *netdev, u32 qpn);
  80
  81/* Shared ndo functions */
  82int mlx5i_dev_init(struct net_device *dev);
  83void mlx5i_dev_cleanup(struct net_device *dev);
  84int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
  85
  86/* Parent profile functions */
  87void mlx5i_init(struct mlx5_core_dev *mdev,
  88                struct net_device *netdev,
  89                const struct mlx5e_profile *profile,
  90                void *ppriv);
  91
  92/* Get child interface nic profile */
  93const struct mlx5e_profile *mlx5i_pkey_get_profile(void);
  94
  95/* Extract mlx5e_priv from IPoIB netdev */
  96#define mlx5i_epriv(netdev) ((void *)(((struct mlx5i_priv *)netdev_priv(netdev))->mlx5e_priv))
  97
  98struct mlx5_wqe_eth_pad {
  99        u8 rsvd0[16];
 100};
 101
 102struct mlx5i_tx_wqe {
 103        struct mlx5_wqe_ctrl_seg     ctrl;
 104        struct mlx5_wqe_datagram_seg datagram;
 105        struct mlx5_wqe_eth_pad      pad;
 106        struct mlx5_wqe_eth_seg      eth;
 107        struct mlx5_wqe_data_seg     data[0];
 108};
 109
 110static inline void mlx5i_sq_fetch_wqe(struct mlx5e_txqsq *sq,
 111                                      struct mlx5i_tx_wqe **wqe,
 112                                      u16 pi)
 113{
 114        struct mlx5_wq_cyc *wq = &sq->wq;
 115
 116        *wqe = mlx5_wq_cyc_get_wqe(wq, pi);
 117        memset(*wqe, 0, sizeof(**wqe));
 118}
 119
 120netdev_tx_t mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
 121                          struct mlx5_av *av, u32 dqpn, u32 dqkey);
 122void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe);
 123
 124#endif /* CONFIG_MLX5_CORE_IPOIB */
 125#endif /* __MLX5E_IPOB_H__ */
 126