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 mlx5_tc_int_port_priv; 62 struct mlx5e_rep_bond; 63 struct mlx5e_tc_tun_encap; 64 struct mlx5e_post_act; 65 struct mlx5e_flow_meters; 66 67 struct mlx5_rep_uplink_priv { 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 mlx5e_post_act *post_act; 90 struct mlx5_tc_ct_priv *ct_priv; 91 struct mlx5e_tc_psample *tc_psample; 92 93 /* support eswitch vports bonding */ 94 struct mlx5e_rep_bond *bond; 95 96 /* tc tunneling encapsulation private data */ 97 struct mlx5e_tc_tun_encap *encap; 98 99 /* OVS internal port support */ 100 struct mlx5e_tc_int_port_priv *int_port_priv; 101 102 struct mlx5e_flow_meters *flow_meters; 103 }; 104 105 struct mlx5e_rep_priv { 106 struct mlx5_eswitch_rep *rep; 107 struct mlx5e_neigh_update_table neigh_update; 108 struct net_device *netdev; 109 struct mlx5_flow_table *root_ft; 110 struct mlx5_flow_handle *vport_rx_rule; 111 struct list_head vport_sqs_list; 112 struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */ 113 struct rtnl_link_stats64 prev_vf_vport_stats; 114 struct mlx5_flow_handle *send_to_vport_meta_rule; 115 struct rhashtable tc_ht; 116 }; 117 118 static inline 119 struct mlx5e_rep_priv *mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep *rep) 120 { 121 return rep->rep_data[REP_ETH].priv; 122 } 123 124 struct mlx5e_neigh { 125 union { 126 __be32 v4; 127 struct in6_addr v6; 128 } dst_ip; 129 int family; 130 }; 131 132 struct mlx5e_neigh_hash_entry { 133 struct rhash_head rhash_node; 134 struct mlx5e_neigh m_neigh; 135 struct mlx5e_priv *priv; 136 struct net_device *neigh_dev; 137 138 /* Save the neigh hash entry in a list on the representor in 139 * addition to the hash table. In order to iterate easily over the 140 * neighbour entries. Used for stats query. 141 */ 142 struct list_head neigh_list; 143 144 /* protects encap list */ 145 spinlock_t encap_list_lock; 146 /* encap list sharing the same neigh */ 147 struct list_head encap_list; 148 149 /* neigh hash entry can be deleted only when the refcount is zero. 150 * refcount is needed to avoid neigh hash entry removal by TC, while 151 * it's used by the neigh notification call. 152 */ 153 refcount_t refcnt; 154 155 /* Save the last reported time offloaded traffic pass over one of the 156 * neigh hash entry flows. Use it to periodically update the neigh 157 * 'used' value and avoid neigh deleting by the kernel. 158 */ 159 unsigned long reported_lastuse; 160 161 struct rcu_head rcu; 162 }; 163 164 enum { 165 /* set when the encap entry is successfully offloaded into HW */ 166 MLX5_ENCAP_ENTRY_VALID = BIT(0), 167 MLX5_REFORMAT_DECAP = BIT(1), 168 MLX5_ENCAP_ENTRY_NO_ROUTE = BIT(2), 169 }; 170 171 struct mlx5e_decap_key { 172 struct ethhdr key; 173 }; 174 175 struct mlx5e_decap_entry { 176 struct mlx5e_decap_key key; 177 struct list_head flows; 178 struct hlist_node hlist; 179 refcount_t refcnt; 180 struct completion res_ready; 181 int compl_result; 182 struct mlx5_pkt_reformat *pkt_reformat; 183 struct rcu_head rcu; 184 }; 185 186 struct mlx5e_mpls_info { 187 u32 label; 188 u8 tc; 189 u8 bos; 190 u8 ttl; 191 }; 192 193 struct mlx5e_encap_entry { 194 /* attached neigh hash entry */ 195 struct mlx5e_neigh_hash_entry *nhe; 196 /* neigh hash entry list of encaps sharing the same neigh */ 197 struct list_head encap_list; 198 /* a node of the eswitch encap hash table which keeping all the encap 199 * entries 200 */ 201 struct hlist_node encap_hlist; 202 struct list_head flows; 203 struct list_head route_list; 204 struct mlx5_pkt_reformat *pkt_reformat; 205 const struct ip_tunnel_info *tun_info; 206 struct mlx5e_mpls_info mpls_info; 207 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 208 209 struct net_device *out_dev; 210 int route_dev_ifindex; 211 struct mlx5e_tc_tunnel *tunnel; 212 int reformat_type; 213 u8 flags; 214 char *encap_header; 215 int encap_size; 216 refcount_t refcnt; 217 struct completion res_ready; 218 int compl_result; 219 struct rcu_head rcu; 220 }; 221 222 struct mlx5e_rep_sq { 223 struct mlx5_flow_handle *send_to_vport_rule; 224 struct mlx5_flow_handle *send_to_vport_rule_peer; 225 u32 sqn; 226 struct list_head list; 227 }; 228 229 int mlx5e_rep_init(void); 230 void mlx5e_rep_cleanup(void); 231 int mlx5e_rep_bond_init(struct mlx5e_rep_priv *rpriv); 232 void mlx5e_rep_bond_cleanup(struct mlx5e_rep_priv *rpriv); 233 int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, 234 struct net_device *lag_dev); 235 void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, 236 const struct net_device *netdev, 237 const struct net_device *lag_dev); 238 int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup); 239 240 bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id); 241 int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev, 242 void *sp); 243 244 bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); 245 void mlx5e_rep_activate_channels(struct mlx5e_priv *priv); 246 void mlx5e_rep_deactivate_channels(struct mlx5e_priv *priv); 247 248 void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv); 249 250 bool mlx5e_eswitch_vf_rep(const struct net_device *netdev); 251 bool mlx5e_eswitch_uplink_rep(const struct net_device *netdev); 252 static inline bool mlx5e_eswitch_rep(const struct net_device *netdev) 253 { 254 return mlx5e_eswitch_vf_rep(netdev) || 255 mlx5e_eswitch_uplink_rep(netdev); 256 } 257 258 #else /* CONFIG_MLX5_ESWITCH */ 259 static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; } 260 static inline void mlx5e_rep_activate_channels(struct mlx5e_priv *priv) {} 261 static inline void mlx5e_rep_deactivate_channels(struct mlx5e_priv *priv) {} 262 static inline int mlx5e_rep_init(void) { return 0; }; 263 static inline void mlx5e_rep_cleanup(void) {}; 264 static inline bool mlx5e_rep_has_offload_stats(const struct net_device *dev, 265 int attr_id) { return false; } 266 static inline int mlx5e_rep_get_offload_stats(int attr_id, 267 const struct net_device *dev, 268 void *sp) { return -EOPNOTSUPP; } 269 #endif 270 271 static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv) 272 { 273 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv); 274 } 275 #endif /* __MLX5E_REP_H__ */ 276