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 mlx5e_tc_tun_encap; 63 64 struct mlx5_rep_uplink_priv { 65 /* Filters DB - instantiated by the uplink representor and shared by 66 * the uplink's VFs 67 */ 68 struct rhashtable tc_ht; 69 70 /* indirect block callbacks are invoked on bind/unbind events 71 * on registered higher level devices (e.g. tunnel devices) 72 * 73 * tc_indr_block_cb_priv_list is used to lookup indirect callback 74 * private data 75 * 76 */ 77 struct list_head tc_indr_block_priv_list; 78 79 struct mlx5_tun_entropy tun_entropy; 80 81 /* protects unready_flows */ 82 struct mutex unready_flows_lock; 83 struct list_head unready_flows; 84 struct work_struct reoffload_flows_work; 85 86 /* maps tun_info to a unique id*/ 87 struct mapping_ctx *tunnel_mapping; 88 /* maps tun_enc_opts to a unique id*/ 89 struct mapping_ctx *tunnel_enc_opts_mapping; 90 91 struct mlx5_tc_ct_priv *ct_priv; 92 struct mlx5_esw_psample *esw_psample; 93 94 /* support eswitch vports bonding */ 95 struct mlx5e_rep_bond *bond; 96 97 /* tc tunneling encapsulation private data */ 98 struct mlx5e_tc_tun_encap *encap; 99 }; 100 101 struct mlx5e_rep_priv { 102 struct mlx5_eswitch_rep *rep; 103 struct mlx5e_neigh_update_table neigh_update; 104 struct net_device *netdev; 105 struct mlx5_flow_table *root_ft; 106 struct mlx5_flow_handle *vport_rx_rule; 107 struct list_head vport_sqs_list; 108 struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */ 109 struct rtnl_link_stats64 prev_vf_vport_stats; 110 }; 111 112 static inline 113 struct mlx5e_rep_priv *mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep *rep) 114 { 115 return rep->rep_data[REP_ETH].priv; 116 } 117 118 struct mlx5e_neigh { 119 union { 120 __be32 v4; 121 struct in6_addr v6; 122 } dst_ip; 123 int family; 124 }; 125 126 struct mlx5e_neigh_hash_entry { 127 struct rhash_head rhash_node; 128 struct mlx5e_neigh m_neigh; 129 struct mlx5e_priv *priv; 130 struct net_device *neigh_dev; 131 132 /* Save the neigh hash entry in a list on the representor in 133 * addition to the hash table. In order to iterate easily over the 134 * neighbour entries. Used for stats query. 135 */ 136 struct list_head neigh_list; 137 138 /* protects encap list */ 139 spinlock_t encap_list_lock; 140 /* encap list sharing the same neigh */ 141 struct list_head encap_list; 142 143 /* neigh hash entry can be deleted only when the refcount is zero. 144 * refcount is needed to avoid neigh hash entry removal by TC, while 145 * it's used by the neigh notification call. 146 */ 147 refcount_t refcnt; 148 149 /* Save the last reported time offloaded trafic pass over one of the 150 * neigh hash entry flows. Use it to periodically update the neigh 151 * 'used' value and avoid neigh deleting by the kernel. 152 */ 153 unsigned long reported_lastuse; 154 155 struct rcu_head rcu; 156 }; 157 158 enum { 159 /* set when the encap entry is successfully offloaded into HW */ 160 MLX5_ENCAP_ENTRY_VALID = BIT(0), 161 MLX5_REFORMAT_DECAP = BIT(1), 162 MLX5_ENCAP_ENTRY_NO_ROUTE = BIT(2), 163 }; 164 165 struct mlx5e_decap_key { 166 struct ethhdr key; 167 }; 168 169 struct mlx5e_decap_entry { 170 struct mlx5e_decap_key key; 171 struct list_head flows; 172 struct hlist_node hlist; 173 refcount_t refcnt; 174 struct completion res_ready; 175 int compl_result; 176 struct mlx5_pkt_reformat *pkt_reformat; 177 struct rcu_head rcu; 178 }; 179 180 struct mlx5e_encap_entry { 181 /* attached neigh hash entry */ 182 struct mlx5e_neigh_hash_entry *nhe; 183 /* neigh hash entry list of encaps sharing the same neigh */ 184 struct list_head encap_list; 185 /* a node of the eswitch encap hash table which keeping all the encap 186 * entries 187 */ 188 struct hlist_node encap_hlist; 189 struct list_head flows; 190 struct list_head route_list; 191 struct mlx5_pkt_reformat *pkt_reformat; 192 const struct ip_tunnel_info *tun_info; 193 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 194 195 struct net_device *out_dev; 196 int route_dev_ifindex; 197 struct mlx5e_tc_tunnel *tunnel; 198 int reformat_type; 199 u8 flags; 200 char *encap_header; 201 int encap_size; 202 refcount_t refcnt; 203 struct completion res_ready; 204 int compl_result; 205 struct rcu_head rcu; 206 }; 207 208 struct mlx5e_rep_sq { 209 struct mlx5_flow_handle *send_to_vport_rule; 210 struct list_head list; 211 }; 212 213 int mlx5e_rep_init(void); 214 void mlx5e_rep_cleanup(void); 215 int mlx5e_rep_bond_init(struct mlx5e_rep_priv *rpriv); 216 void mlx5e_rep_bond_cleanup(struct mlx5e_rep_priv *rpriv); 217 int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, 218 struct net_device *lag_dev); 219 void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, 220 const struct net_device *netdev, 221 const struct net_device *lag_dev); 222 int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup); 223 224 bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id); 225 int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev, 226 void *sp); 227 228 bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); 229 int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv); 230 void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv); 231 232 void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv); 233 234 bool mlx5e_eswitch_vf_rep(const struct net_device *netdev); 235 bool mlx5e_eswitch_uplink_rep(const struct net_device *netdev); 236 static inline bool mlx5e_eswitch_rep(const struct net_device *netdev) 237 { 238 return mlx5e_eswitch_vf_rep(netdev) || 239 mlx5e_eswitch_uplink_rep(netdev); 240 } 241 242 #else /* CONFIG_MLX5_ESWITCH */ 243 static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; } 244 static inline int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv) { return 0; } 245 static inline void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv) {} 246 static inline int mlx5e_rep_init(void) { return 0; }; 247 static inline void mlx5e_rep_cleanup(void) {}; 248 static inline bool mlx5e_rep_has_offload_stats(const struct net_device *dev, 249 int attr_id) { return false; } 250 static inline int mlx5e_rep_get_offload_stats(int attr_id, 251 const struct net_device *dev, 252 void *sp) { return -EOPNOTSUPP; } 253 #endif 254 255 static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv) 256 { 257 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv); 258 } 259 #endif /* __MLX5E_REP_H__ */ 260