root/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.h

INCLUDED FROM

DEFINITIONS

1. mlx5i_sq_fetch_wqe

   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 
  43 extern const struct ethtool_ops mlx5i_ethtool_ops;
  44 extern 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 */
  52 struct 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 int mlx5i_create_tis(struct mlx5_core_dev *mdev, u32 underlay_qpn, u32 *tisn);
  63 
  64 /* Underlay QP create/destroy functions */
  65 int mlx5i_create_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp);
  66 void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp);
  67 
  68 /* Underlay QP state modification init/uninit functions */
  69 int mlx5i_init_underlay_qp(struct mlx5e_priv *priv);
  70 void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv);
  71 
  72 /* Allocate/Free underlay QPN to net-device hash table */
  73 int mlx5i_pkey_qpn_ht_init(struct net_device *netdev);
  74 void mlx5i_pkey_qpn_ht_cleanup(struct net_device *netdev);
  75 
  76 /* Add/Remove an underlay QPN to net-device mapping to/from the hash table */
  77 int mlx5i_pkey_add_qpn(struct net_device *netdev, u32 qpn);
  78 int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn);
  79 
  80 /* Get the net-device corresponding to the given underlay QPN */
  81 struct net_device *mlx5i_pkey_get_netdev(struct net_device *netdev, u32 qpn);
  82 
  83 /* Shared ndo functions */
  84 int mlx5i_dev_init(struct net_device *dev);
  85 void mlx5i_dev_cleanup(struct net_device *dev);
  86 int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
  87 
  88 /* Parent profile functions */
  89 int mlx5i_init(struct mlx5_core_dev *mdev,
  90                struct net_device *netdev,
  91                const struct mlx5e_profile *profile,
  92                void *ppriv);
  93 void mlx5i_cleanup(struct mlx5e_priv *priv);
  94 
  95 /* Get child interface nic profile */
  96 const struct mlx5e_profile *mlx5i_pkey_get_profile(void);
  97 
  98 /* Extract mlx5e_priv from IPoIB netdev */
  99 #define mlx5i_epriv(netdev) ((void *)(((struct mlx5i_priv *)netdev_priv(netdev))->mlx5e_priv))
 100 
 101 struct mlx5_wqe_eth_pad {
 102         u8 rsvd0[16];
 103 };
 104 
 105 struct mlx5i_tx_wqe {
 106         struct mlx5_wqe_ctrl_seg     ctrl;
 107         struct mlx5_wqe_datagram_seg datagram;
 108         struct mlx5_wqe_eth_pad      pad;
 109         struct mlx5_wqe_eth_seg      eth;
 110         struct mlx5_wqe_data_seg     data[0];
 111 };
 112 
 113 static inline void mlx5i_sq_fetch_wqe(struct mlx5e_txqsq *sq,
 114                                       struct mlx5i_tx_wqe **wqe,
 115                                       u16 pi)
 116 {
 117         struct mlx5_wq_cyc *wq = &sq->wq;
 118 
 119         *wqe = mlx5_wq_cyc_get_wqe(wq, pi);
 120         memset(*wqe, 0, sizeof(**wqe));
 121 }
 122 
 123 netdev_tx_t mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
 124                           struct mlx5_av *av, u32 dqpn, u32 dqkey,
 125                           bool xmit_more);
 126 void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe);
 127 void mlx5i_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats);
 128 
 129 #endif /* CONFIG_MLX5_CORE_IPOIB */
 130 #endif /* __MLX5E_IPOB_H__ */