2 * Copyright (c) 2017, Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #ifndef __MLX5E_IPOB_H__
34 #define __MLX5E_IPOB_H__
36 #ifdef CONFIG_MLX5_CORE_IPOIB
38 #include <linux/mlx5/fs.h>
41 #define MLX5I_MAX_NUM_TC 1
43 extern const struct ethtool_ops mlx5i_ethtool_ops;
44 extern const struct ethtool_ops mlx5i_pkey_ethtool_ops;
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)
51 /* ipoib rdma netdev's private data structure */
53 struct rdma_netdev rn; /* keep this first */
54 struct mlx5_core_qp qp;
58 struct mlx5i_pkey_qpn_ht *qpn_htbl;
62 /* Underlay QP create/destroy functions */
63 int mlx5i_create_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp);
64 void mlx5i_destroy_underlay_qp(struct mlx5_core_dev *mdev, struct mlx5_core_qp *qp);
66 /* Underlay QP state modification init/uninit functions */
67 int mlx5i_init_underlay_qp(struct mlx5e_priv *priv);
68 void mlx5i_uninit_underlay_qp(struct mlx5e_priv *priv);
70 /* Allocate/Free underlay QPN to net-device hash table */
71 int mlx5i_pkey_qpn_ht_init(struct net_device *netdev);
72 void mlx5i_pkey_qpn_ht_cleanup(struct net_device *netdev);
74 /* Add/Remove an underlay QPN to net-device mapping to/from the hash table */
75 int mlx5i_pkey_add_qpn(struct net_device *netdev, u32 qpn);
76 int mlx5i_pkey_del_qpn(struct net_device *netdev, u32 qpn);
78 /* Get the net-device corresponding to the given underlay QPN */
79 struct net_device *mlx5i_pkey_get_netdev(struct net_device *netdev, u32 qpn);
81 /* Shared ndo functions */
82 int mlx5i_dev_init(struct net_device *dev);
83 void mlx5i_dev_cleanup(struct net_device *dev);
84 int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
86 /* Parent profile functions */
87 void mlx5i_init(struct mlx5_core_dev *mdev,
88 struct net_device *netdev,
89 const struct mlx5e_profile *profile,
92 /* Get child interface nic profile */
93 const struct mlx5e_profile *mlx5i_pkey_get_profile(void);
95 /* Extract mlx5e_priv from IPoIB netdev */
96 #define mlx5i_epriv(netdev) ((void *)(((struct mlx5i_priv *)netdev_priv(netdev))->mlx5e_priv))
98 struct mlx5_wqe_eth_pad {
102 struct 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];
110 static inline void mlx5i_sq_fetch_wqe(struct mlx5e_txqsq *sq,
111 struct mlx5i_tx_wqe **wqe,
114 struct mlx5_wq_cyc *wq = &sq->wq;
116 *pi = mlx5_wq_cyc_ctr2ix(wq, sq->pc);
117 *wqe = mlx5_wq_cyc_get_wqe(wq, *pi);
118 memset(*wqe, 0, sizeof(**wqe));
121 netdev_tx_t mlx5i_sq_xmit(struct mlx5e_txqsq *sq, struct sk_buff *skb,
122 struct mlx5_av *av, u32 dqpn, u32 dqkey);
123 void mlx5i_handle_rx_cqe(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe);
125 #endif /* CONFIG_MLX5_CORE_IPOIB */
126 #endif /* __MLX5E_IPOB_H__ */