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__ */ 131