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_REP_H__ 34#define __MLX5E_REP_H__ 35 36#include <net/ip_tunnels.h> 37#include <linux/rhashtable.h> 38#include <linux/mutex.h> 39#include "eswitch.h" 40#include "en.h" 41#include "lib/port_tun.h" 42 43#ifdef CONFIG_MLX5_ESWITCH 44struct mlx5e_neigh_update_table { 45 struct rhashtable neigh_ht; 46 /* Save the neigh hash entries in a list in addition to the hash table 47 * (neigh_ht). In order to iterate easily over the neigh entries. 48 * Used for stats query. 49 */ 50 struct list_head neigh_list; 51 /* protect lookup/remove operations */ 52 struct mutex encap_lock; 53 struct notifier_block netevent_nb; 54 struct delayed_work neigh_stats_work; 55 unsigned long min_interval; /* jiffies */ 56}; 57 58struct mlx5_rep_uplink_priv { 59 /* Filters DB - instantiated by the uplink representor and shared by 60 * the uplink's VFs 61 */ 62 struct rhashtable tc_ht; 63 64 /* indirect block callbacks are invoked on bind/unbind events 65 * on registered higher level devices (e.g. tunnel devices) 66 * 67 * tc_indr_block_cb_priv_list is used to lookup indirect callback 68 * private data 69 * 70 * netdevice_nb is the netdev events notifier - used to register 71 * tunnel devices for block events 72 * 73 */ 74 struct list_head tc_indr_block_priv_list; 75 struct notifier_block netdevice_nb; 76 77 struct mlx5_tun_entropy tun_entropy; 78 79 /* protects unready_flows */ 80 struct mutex unready_flows_lock; 81 struct list_head unready_flows; 82 struct work_struct reoffload_flows_work; 83}; 84 85struct mlx5e_rep_priv { 86 struct mlx5_eswitch_rep *rep; 87 struct mlx5e_neigh_update_table neigh_update; 88 struct net_device *netdev; 89 struct mlx5_flow_handle *vport_rx_rule; 90 struct list_head vport_sqs_list; 91 struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */ 92 struct rtnl_link_stats64 prev_vf_vport_stats; 93 struct devlink_port dl_port; 94}; 95 96static inline 97struct mlx5e_rep_priv *mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep *rep) 98{ 99 return rep->rep_data[REP_ETH].priv; 100} 101 102struct mlx5e_neigh { 103 struct net_device *dev; 104 union { 105 __be32 v4; 106 struct in6_addr v6; 107 } dst_ip; 108 int family; 109}; 110 111struct mlx5e_neigh_hash_entry { 112 struct rhash_head rhash_node; 113 struct mlx5e_neigh m_neigh; 114 struct mlx5e_priv *priv; 115 116 /* Save the neigh hash entry in a list on the representor in 117 * addition to the hash table. In order to iterate easily over the 118 * neighbour entries. Used for stats query. 119 */ 120 struct list_head neigh_list; 121 122 /* protects encap list */ 123 spinlock_t encap_list_lock; 124 /* encap list sharing the same neigh */ 125 struct list_head encap_list; 126 127 /* valid only when the neigh reference is taken during 128 * neigh_update_work workqueue callback. 129 */ 130 struct neighbour *n; 131 struct work_struct neigh_update_work; 132 133 /* neigh hash entry can be deleted only when the refcount is zero. 134 * refcount is needed to avoid neigh hash entry removal by TC, while 135 * it's used by the neigh notification call. 136 */ 137 refcount_t refcnt; 138 139 /* Save the last reported time offloaded trafic pass over one of the 140 * neigh hash entry flows. Use it to periodically update the neigh 141 * 'used' value and avoid neigh deleting by the kernel. 142 */ 143 unsigned long reported_lastuse; 144 145 struct rcu_head rcu; 146}; 147 148enum { 149 /* set when the encap entry is successfully offloaded into HW */ 150 MLX5_ENCAP_ENTRY_VALID = BIT(0), 151}; 152 153struct mlx5e_encap_entry { 154 /* attached neigh hash entry */ 155 struct mlx5e_neigh_hash_entry *nhe; 156 /* neigh hash entry list of encaps sharing the same neigh */ 157 struct list_head encap_list; 158 struct mlx5e_neigh m_neigh; 159 /* a node of the eswitch encap hash table which keeping all the encap 160 * entries 161 */ 162 struct hlist_node encap_hlist; 163 struct list_head flows; 164 struct mlx5_pkt_reformat *pkt_reformat; 165 const struct ip_tunnel_info *tun_info; 166 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 167 168 struct net_device *out_dev; 169 struct net_device *route_dev; 170 struct mlx5e_tc_tunnel *tunnel; 171 int reformat_type; 172 u8 flags; 173 char *encap_header; 174 int encap_size; 175 refcount_t refcnt; 176 struct completion res_ready; 177 int compl_result; 178 struct rcu_head rcu; 179}; 180 181struct mlx5e_rep_sq { 182 struct mlx5_flow_handle *send_to_vport_rule; 183 struct list_head list; 184}; 185 186void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev); 187void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev); 188bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); 189int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv); 190void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv); 191 192void mlx5e_handle_rx_cqe_rep(struct mlx5e_rq *rq, struct mlx5_cqe64 *cqe); 193 194int mlx5e_rep_encap_entry_attach(struct mlx5e_priv *priv, 195 struct mlx5e_encap_entry *e); 196void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv, 197 struct mlx5e_encap_entry *e); 198 199void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv); 200 201bool mlx5e_eswitch_rep(struct net_device *netdev); 202 203#else /* CONFIG_MLX5_ESWITCH */ 204static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; } 205static inline int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv) { return 0; } 206static inline void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv) {} 207#endif 208 209static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv) 210{ 211 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv); 212} 213#endif /* __MLX5E_REP_H__ */ 214