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 44 extern const struct mlx5e_rx_handlers mlx5e_rx_handlers_rep; 45 46 struct mlx5e_neigh_update_table { 47 struct rhashtable neigh_ht; 48 /* Save the neigh hash entries in a list in addition to the hash table 49 * (neigh_ht). In order to iterate easily over the neigh entries. 50 * Used for stats query. 51 */ 52 struct list_head neigh_list; 53 /* protect lookup/remove operations */ 54 struct mutex encap_lock; 55 struct notifier_block netevent_nb; 56 struct delayed_work neigh_stats_work; 57 unsigned long min_interval; /* jiffies */ 58 }; 59 60 struct mlx5_tc_ct_priv; 61 struct mlx5e_rep_bond; 62 struct mlx5_rep_uplink_priv { 63 /* Filters DB - instantiated by the uplink representor and shared by 64 * the uplink's VFs 65 */ 66 struct rhashtable tc_ht; 67 68 /* indirect block callbacks are invoked on bind/unbind events 69 * on registered higher level devices (e.g. tunnel devices) 70 * 71 * tc_indr_block_cb_priv_list is used to lookup indirect callback 72 * private data 73 * 74 */ 75 struct list_head tc_indr_block_priv_list; 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 /* maps tun_info to a unique id*/ 85 struct mapping_ctx *tunnel_mapping; 86 /* maps tun_enc_opts to a unique id*/ 87 struct mapping_ctx *tunnel_enc_opts_mapping; 88 89 struct mlx5_tc_ct_priv *ct_priv; 90 91 /* support eswitch vports bonding */ 92 struct mlx5e_rep_bond *bond; 93 }; 94 95 struct mlx5e_rep_priv { 96 struct mlx5_eswitch_rep *rep; 97 struct mlx5e_neigh_update_table neigh_update; 98 struct net_device *netdev; 99 struct mlx5_flow_table *root_ft; 100 struct mlx5_flow_handle *vport_rx_rule; 101 struct list_head vport_sqs_list; 102 struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */ 103 struct rtnl_link_stats64 prev_vf_vport_stats; 104 }; 105 106 static inline 107 struct mlx5e_rep_priv *mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep *rep) 108 { 109 return rep->rep_data[REP_ETH].priv; 110 } 111 112 struct mlx5e_neigh { 113 struct net_device *dev; 114 union { 115 __be32 v4; 116 struct in6_addr v6; 117 } dst_ip; 118 int family; 119 }; 120 121 struct mlx5e_neigh_hash_entry { 122 struct rhash_head rhash_node; 123 struct mlx5e_neigh m_neigh; 124 struct mlx5e_priv *priv; 125 126 /* Save the neigh hash entry in a list on the representor in 127 * addition to the hash table. In order to iterate easily over the 128 * neighbour entries. Used for stats query. 129 */ 130 struct list_head neigh_list; 131 132 /* protects encap list */ 133 spinlock_t encap_list_lock; 134 /* encap list sharing the same neigh */ 135 struct list_head encap_list; 136 137 /* neigh hash entry can be deleted only when the refcount is zero. 138 * refcount is needed to avoid neigh hash entry removal by TC, while 139 * it's used by the neigh notification call. 140 */ 141 refcount_t refcnt; 142 143 /* Save the last reported time offloaded trafic pass over one of the 144 * neigh hash entry flows. Use it to periodically update the neigh 145 * 'used' value and avoid neigh deleting by the kernel. 146 */ 147 unsigned long reported_lastuse; 148 149 struct rcu_head rcu; 150 }; 151 152 enum { 153 /* set when the encap entry is successfully offloaded into HW */ 154 MLX5_ENCAP_ENTRY_VALID = BIT(0), 155 MLX5_REFORMAT_DECAP = BIT(1), 156 }; 157 158 struct mlx5e_decap_key { 159 struct ethhdr key; 160 }; 161 162 struct mlx5e_decap_entry { 163 struct mlx5e_decap_key key; 164 struct list_head flows; 165 struct hlist_node hlist; 166 refcount_t refcnt; 167 struct completion res_ready; 168 int compl_result; 169 struct mlx5_pkt_reformat *pkt_reformat; 170 struct rcu_head rcu; 171 }; 172 173 struct mlx5e_encap_entry { 174 /* attached neigh hash entry */ 175 struct mlx5e_neigh_hash_entry *nhe; 176 /* neigh hash entry list of encaps sharing the same neigh */ 177 struct list_head encap_list; 178 struct mlx5e_neigh m_neigh; 179 /* a node of the eswitch encap hash table which keeping all the encap 180 * entries 181 */ 182 struct hlist_node encap_hlist; 183 struct list_head flows; 184 struct mlx5_pkt_reformat *pkt_reformat; 185 const struct ip_tunnel_info *tun_info; 186 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 187 188 struct net_device *out_dev; 189 int route_dev_ifindex; 190 struct mlx5e_tc_tunnel *tunnel; 191 int reformat_type; 192 u8 flags; 193 char *encap_header; 194 int encap_size; 195 refcount_t refcnt; 196 struct completion res_ready; 197 int compl_result; 198 struct rcu_head rcu; 199 }; 200 201 struct mlx5e_rep_sq { 202 struct mlx5_flow_handle *send_to_vport_rule; 203 struct list_head list; 204 }; 205 206 int mlx5e_rep_init(void); 207 void mlx5e_rep_cleanup(void); 208 int mlx5e_rep_bond_init(struct mlx5e_rep_priv *rpriv); 209 void mlx5e_rep_bond_cleanup(struct mlx5e_rep_priv *rpriv); 210 int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, 211 struct net_device *lag_dev); 212 void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, 213 const struct net_device *netdev, 214 const struct net_device *lag_dev); 215 int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup); 216 217 bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); 218 int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv); 219 void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv); 220 221 void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv); 222 223 bool mlx5e_eswitch_vf_rep(struct net_device *netdev); 224 bool mlx5e_eswitch_uplink_rep(struct net_device *netdev); 225 static inline bool mlx5e_eswitch_rep(struct net_device *netdev) 226 { 227 return mlx5e_eswitch_vf_rep(netdev) || 228 mlx5e_eswitch_uplink_rep(netdev); 229 } 230 231 #else /* CONFIG_MLX5_ESWITCH */ 232 static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; } 233 static inline int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv) { return 0; } 234 static inline void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv) {} 235 static inline int mlx5e_rep_init(void) { return 0; }; 236 static inline void mlx5e_rep_cleanup(void) {}; 237 #endif 238 239 static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv) 240 { 241 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv); 242 } 243 #endif /* __MLX5E_REP_H__ */ 244