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
mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep * rep)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 void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev);
207 void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev);
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);
mlx5e_eswitch_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 */
mlx5e_is_uplink_rep(struct mlx5e_priv * priv)232 static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; }
mlx5e_add_sqs_fwd_rules(struct mlx5e_priv * priv)233 static inline int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv) { return 0; }
mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv * priv)234 static inline void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv) {}
235 #endif
236
mlx5e_is_vport_rep(struct mlx5e_priv * priv)237 static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv)
238 {
239 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv);
240 }
241 #endif /* __MLX5E_REP_H__ */
242