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 struct mlx5e_post_act;
64
65 struct mlx5_rep_uplink_priv {
66 /* Filters DB - instantiated by the uplink representor and shared by
67 * the uplink's VFs
68 */
69 struct rhashtable tc_ht;
70
71 /* indirect block callbacks are invoked on bind/unbind events
72 * on registered higher level devices (e.g. tunnel devices)
73 *
74 * tc_indr_block_cb_priv_list is used to lookup indirect callback
75 * private data
76 *
77 */
78 struct list_head tc_indr_block_priv_list;
79
80 struct mlx5_tun_entropy tun_entropy;
81
82 /* protects unready_flows */
83 struct mutex unready_flows_lock;
84 struct list_head unready_flows;
85 struct work_struct reoffload_flows_work;
86
87 /* maps tun_info to a unique id*/
88 struct mapping_ctx *tunnel_mapping;
89 /* maps tun_enc_opts to a unique id*/
90 struct mapping_ctx *tunnel_enc_opts_mapping;
91
92 struct mlx5e_post_act *post_act;
93 struct mlx5_tc_ct_priv *ct_priv;
94 struct mlx5e_tc_psample *tc_psample;
95
96 /* support eswitch vports bonding */
97 struct mlx5e_rep_bond *bond;
98
99 /* tc tunneling encapsulation private data */
100 struct mlx5e_tc_tun_encap *encap;
101 };
102
103 struct mlx5e_rep_priv {
104 struct mlx5_eswitch_rep *rep;
105 struct mlx5e_neigh_update_table neigh_update;
106 struct net_device *netdev;
107 struct mlx5_flow_table *root_ft;
108 struct mlx5_flow_handle *vport_rx_rule;
109 struct list_head vport_sqs_list;
110 struct mlx5_rep_uplink_priv uplink_priv; /* valid for uplink rep */
111 struct rtnl_link_stats64 prev_vf_vport_stats;
112 };
113
114 static inline
mlx5e_rep_to_rep_priv(struct mlx5_eswitch_rep * rep)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_encap_entry {
183 /* attached neigh hash entry */
184 struct mlx5e_neigh_hash_entry *nhe;
185 /* neigh hash entry list of encaps sharing the same neigh */
186 struct list_head encap_list;
187 /* a node of the eswitch encap hash table which keeping all the encap
188 * entries
189 */
190 struct hlist_node encap_hlist;
191 struct list_head flows;
192 struct list_head route_list;
193 struct mlx5_pkt_reformat *pkt_reformat;
194 const struct ip_tunnel_info *tun_info;
195 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
196
197 struct net_device *out_dev;
198 int route_dev_ifindex;
199 struct mlx5e_tc_tunnel *tunnel;
200 int reformat_type;
201 u8 flags;
202 char *encap_header;
203 int encap_size;
204 refcount_t refcnt;
205 struct completion res_ready;
206 int compl_result;
207 struct rcu_head rcu;
208 };
209
210 struct mlx5e_rep_sq {
211 struct mlx5_flow_handle *send_to_vport_rule;
212 struct mlx5_flow_handle *send_to_vport_rule_peer;
213 u32 sqn;
214 struct list_head list;
215 };
216
217 int mlx5e_rep_init(void);
218 void mlx5e_rep_cleanup(void);
219 int mlx5e_rep_bond_init(struct mlx5e_rep_priv *rpriv);
220 void mlx5e_rep_bond_cleanup(struct mlx5e_rep_priv *rpriv);
221 int mlx5e_rep_bond_enslave(struct mlx5_eswitch *esw, struct net_device *netdev,
222 struct net_device *lag_dev);
223 void mlx5e_rep_bond_unslave(struct mlx5_eswitch *esw,
224 const struct net_device *netdev,
225 const struct net_device *lag_dev);
226 int mlx5e_rep_bond_update(struct mlx5e_priv *priv, bool cleanup);
227
228 bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id);
229 int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev,
230 void *sp);
231
232 bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv);
233 int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv);
234 void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv);
235
236 void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv);
237
238 bool mlx5e_eswitch_vf_rep(const struct net_device *netdev);
239 bool mlx5e_eswitch_uplink_rep(const struct net_device *netdev);
mlx5e_eswitch_rep(const struct net_device * netdev)240 static inline bool mlx5e_eswitch_rep(const struct net_device *netdev)
241 {
242 return mlx5e_eswitch_vf_rep(netdev) ||
243 mlx5e_eswitch_uplink_rep(netdev);
244 }
245
246 #else /* CONFIG_MLX5_ESWITCH */
mlx5e_is_uplink_rep(struct mlx5e_priv * priv)247 static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; }
mlx5e_add_sqs_fwd_rules(struct mlx5e_priv * priv)248 static inline int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv) { return 0; }
mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv * priv)249 static inline void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv) {}
mlx5e_rep_init(void)250 static inline int mlx5e_rep_init(void) { return 0; };
mlx5e_rep_cleanup(void)251 static inline void mlx5e_rep_cleanup(void) {};
mlx5e_rep_has_offload_stats(const struct net_device * dev,int attr_id)252 static inline bool mlx5e_rep_has_offload_stats(const struct net_device *dev,
253 int attr_id) { return false; }
mlx5e_rep_get_offload_stats(int attr_id,const struct net_device * dev,void * sp)254 static inline int mlx5e_rep_get_offload_stats(int attr_id,
255 const struct net_device *dev,
256 void *sp) { return -EOPNOTSUPP; }
257 #endif
258
mlx5e_is_vport_rep(struct mlx5e_priv * priv)259 static inline bool mlx5e_is_vport_rep(struct mlx5e_priv *priv)
260 {
261 return (MLX5_ESWITCH_MANAGER(priv->mdev) && priv->ppriv);
262 }
263 #endif /* __MLX5E_REP_H__ */
264