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 66 struct mlx5_rep_uplink_priv { 67 /* indirect block callbacks are invoked on bind/unbind events 68 * on registered higher level devices (e.g. tunnel devices) 69 * 70 * tc_indr_block_cb_priv_list is used to lookup indirect callback 71 * private data 72 * 73 */ 74 struct list_head tc_indr_block_priv_list; 75 76 struct mlx5_tun_entropy tun_entropy; 77 78 /* protects unready_flows */ 79 struct mutex unready_flows_lock; 80 struct list_head unready_flows; 81 struct work_struct reoffload_flows_work; 82 83 /* maps tun_info to a unique id*/ 84 struct mapping_ctx *tunnel_mapping; 85 /* maps tun_enc_opts to a unique id*/ 86 struct mapping_ctx *tunnel_enc_opts_mapping; 87 88 struct mlx5e_post_act *post_act; 89 struct mlx5_tc_ct_priv *ct_priv; 90 struct mlx5e_tc_psample *tc_psample; 91 92 /* support eswitch vports bonding */ 93 struct mlx5e_rep_bond *bond; 94 95 /* tc tunneling encapsulation private data */ 96 struct mlx5e_tc_tun_encap *encap; 97 98 /* OVS internal port support */ 99 struct mlx5e_tc_int_port_priv *int_port_priv; 100 }; 101 102 struct mlx5e_rep_priv { 103 struct mlx5_eswitch_rep *rep; 104 struct mlx5e_neigh_update_table neigh_update; 105 struct net_device *netdev; 106 struct mlx5_flow_table *root_ft; 107 struct mlx5_flow_handle *vport_rx_rule; 108 struct list_head vport_sqs_list; 109 struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */ 110 struct rtnl_link_stats64 prev_vf_vport_stats; 111 struct rhashtable tc_ht; 112 }; 113 114 static inline 115 struct mlx5e_rep_priv *mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep *rep) 116 { 117 return rep->rep_data[REP_ETH].priv; 118 } 119 120 struct mlx5e_neigh { 121 union { 122 __be32 v4; 123 struct in6_addr v6; 124 } dst_ip; 125 int family; 126 }; 127 128 struct mlx5e_neigh_hash_entry { 129 struct rhash_head rhash_node; 130 struct mlx5e_neigh m_neigh; 131 struct mlx5e_priv *priv; 132 struct net_device *neigh_dev; 133 134 /* Save the neigh hash entry in a list on the representor in 135 * addition to the hash table. In order to iterate easily over the 136 * neighbour entries. Used for stats query. 137 */ 138 struct list_head neigh_list; 139 140 /* protects encap list */ 141 spinlock_t encap_list_lock; 142 /* encap list sharing the same neigh */ 143 struct list_head encap_list; 144 145 /* neigh hash entry can be deleted only when the refcount is zero. 146 * refcount is needed to avoid neigh hash entry removal by TC, while 147 * it's used by the neigh notification call. 148 */ 149 refcount_t refcnt; 150 151 /* Save the last reported time offloaded traffic pass over one of the 152 * neigh hash entry flows. Use it to periodically update the neigh 153 * 'used' value and avoid neigh deleting by the kernel. 154 */ 155 unsigned long reported_lastuse; 156 157 struct rcu_head rcu; 158 }; 159 160 enum { 161 /* set when the encap entry is successfully offloaded into HW */ 162 MLX5_ENCAP_ENTRY_VALID = BIT(0), 163 MLX5_REFORMAT_DECAP = BIT(1), 164 MLX5_ENCAP_ENTRY_NO_ROUTE = BIT(2), 165 }; 166 167 struct mlx5e_decap_key { 168 struct ethhdr key; 169 }; 170 171 struct mlx5e_decap_entry { 172 struct mlx5e_decap_key key; 173 struct list_head flows; 174 struct hlist_node hlist; 175 refcount_t refcnt; 176 struct completion res_ready; 177 int compl_result; 178 struct mlx5_pkt_reformat *pkt_reformat; 179 struct rcu_head rcu; 180 }; 181 182 struct mlx5e_mpls_info { 183 u32 label; 184 u8 tc; 185 u8 bos; 186 u8 ttl; 187 }; 188 189 struct mlx5e_encap_entry { 190 /* attached neigh hash entry */ 191 struct mlx5e_neigh_hash_entry *nhe; 192 /* neigh hash entry list of encaps sharing the same neigh */ 193 struct list_head encap_list; 194 /* a node of the eswitch encap hash table which keeping all the encap 195 * entries 196 */ 197 struct hlist_node encap_hlist; 198 struct list_head flows; 199 struct list_head route_list; 200 struct mlx5_pkt_reformat *pkt_reformat; 201 const struct ip_tunnel_info *tun_info; 202 struct mlx5e_mpls_info mpls_info; 203 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ 204 205 struct net_device *out_dev; 206 int route_dev_ifindex; 207 struct mlx5e_tc_tunnel *tunnel; 208 int reformat_type; 209 u8 flags; 210 char *encap_header; 211 int encap_size; 212 refcount_t refcnt; 213 struct completion res_ready; 214 int compl_result; 215 struct rcu_head rcu; 216 }; 217 218 struct mlx5e_rep_sq { 219 struct mlx5_flow_handle *send_to_vport_rule; 220 struct mlx5_flow_handle *send_to_vport_rule_peer; 221 u32 sqn; 222 struct list_head list; 223 }; 224 225 int mlx5e_rep_init(void); 226 void mlx5e_rep_cleanup(void); 227 int mlx5e_rep_bond_init(struct mlx5e_rep_priv *rpriv); 228 void mlx5e_rep_bond_cleanup(struct mlx5e_rep_priv *rpriv); 229 int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev, 230 struct net_device *lag_dev); 231 void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw, 232 const struct net_device *netdev, 233 const struct net_device *lag_dev); 234 int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup); 235 236 bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id); 237 int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev, 238 void *sp); 239 240 bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv); 241 int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv); 242 void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv); 243 244 void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv); 245 246 bool mlx5e_eswitch_vf_rep(const struct net_device *netdev); 247 bool mlx5e_eswitch_uplink_rep(const struct net_device *netdev); 248 static inline bool mlx5e_eswitch_rep(const struct net_device *netdev) 249 { 250 return mlx5e_eswitch_vf_rep(netdev) || 251 mlx5e_eswitch_uplink_rep(netdev); 252 } 253 254 #else /* CONFIG_MLX5_ESWITCH */ 255 static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; } 256 static inline int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv) { return 0; } 257 static inline void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv) {} 258 static inline int mlx5e_rep_init(void) { return 0; }; 259 static inline void mlx5e_rep_cleanup(void) {}; 260 static inline bool mlx5e_rep_has_offload_stats(const struct net_device *dev, 261 int attr_id) { return false; } 262 static inline int mlx5e_rep_get_offload_stats(int attr_id, 263 const struct net_device *dev, 264 void *sp) { return -EOPNOTSUPP; } 265 #endif 266 267 static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv) 268 { 269 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv); 270 } 271 #endif /* __MLX5E_REP_H__ */ 272