1 /*
2 * Copyright (c) 2015, Mellanox Technologies, Ltd. 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 __MLX5_ESWITCH_H__
34 #define __MLX5_ESWITCH_H__
35
36 #include <linux/if_ether.h>
37 #include <linux/if_link.h>
38 #include <net/devlink.h>
39 #include <linux/mlx5/device.h>
40 #include "lib/mpfs.h"
41
42 #define MLX5_ESWITCH_MANAGER(mdev) MLX5_CAP_GEN(mdev, eswitch_manager)
43
44 enum {
45 SRIOV_NONE,
46 SRIOV_LEGACY,
47 SRIOV_OFFLOADS
48 };
49
50 #ifdef CONFIG_MLX5_ESWITCH
51
52 #define MLX5_MAX_UC_PER_VPORT(dev) \
53 (1 << MLX5_CAP_GEN(dev, log_max_current_uc_list))
54
55 #define MLX5_MAX_MC_PER_VPORT(dev) \
56 (1 << MLX5_CAP_GEN(dev, log_max_current_mc_list))
57
58 #define FDB_UPLINK_VPORT 0xffff
59
60 #define MLX5_MIN_BW_SHARE 1
61
62 #define MLX5_RATE_TO_BW_SHARE(rate, divider, limit) \
63 min_t(u32, max_t(u32, (rate) / (divider), MLX5_MIN_BW_SHARE), limit)
64
65 struct vport_ingress {
66 struct mlx5_flow_table *acl;
67 struct mlx5_flow_group *allow_untagged_spoofchk_grp;
68 struct mlx5_flow_group *allow_spoofchk_only_grp;
69 struct mlx5_flow_group *allow_untagged_only_grp;
70 struct mlx5_flow_group *drop_grp;
71 struct mlx5_flow_handle *allow_rule;
72 struct mlx5_flow_handle *drop_rule;
73 };
74
75 struct vport_egress {
76 struct mlx5_flow_table *acl;
77 struct mlx5_flow_group *allowed_vlans_grp;
78 struct mlx5_flow_group *drop_grp;
79 struct mlx5_flow_handle *allowed_vlan;
80 struct mlx5_flow_handle *drop_rule;
81 };
82
83 struct mlx5_vport_info {
84 u8 mac[ETH_ALEN];
85 u16 vlan;
86 u8 qos;
87 u64 node_guid;
88 int link_state;
89 u32 min_rate;
90 u32 max_rate;
91 bool spoofchk;
92 bool trusted;
93 };
94
95 struct mlx5_vport {
96 struct mlx5_core_dev *dev;
97 int vport;
98 struct hlist_head uc_list[MLX5_L2_ADDR_HASH_SIZE];
99 struct hlist_head mc_list[MLX5_L2_ADDR_HASH_SIZE];
100 struct mlx5_flow_handle *promisc_rule;
101 struct mlx5_flow_handle *allmulti_rule;
102 struct work_struct vport_change_handler;
103
104 struct vport_ingress ingress;
105 struct vport_egress egress;
106
107 struct mlx5_vport_info info;
108
109 struct {
110 bool enabled;
111 u32 esw_tsar_ix;
112 u32 bw_share;
113 } qos;
114
115 bool enabled;
116 u16 enabled_events;
117 };
118
119 struct mlx5_eswitch_fdb {
120 void *fdb;
121 union {
122 struct legacy_fdb {
123 struct mlx5_flow_group *addr_grp;
124 struct mlx5_flow_group *allmulti_grp;
125 struct mlx5_flow_group *promisc_grp;
126 } legacy;
127
128 struct offloads_fdb {
129 struct mlx5_flow_table *fdb;
130 struct mlx5_flow_group *send_to_vport_grp;
131 struct mlx5_flow_group *miss_grp;
132 struct mlx5_flow_handle *miss_rule;
133 int vlan_push_pop_refcount;
134 } offloads;
135 };
136 };
137
138 struct mlx5_esw_sq {
139 struct mlx5_flow_handle *send_to_vport_rule;
140 struct list_head list;
141 };
142
143 struct mlx5_eswitch_rep {
144 int (*load)(struct mlx5_eswitch *esw,
145 struct mlx5_eswitch_rep *rep);
146 void (*unload)(struct mlx5_eswitch *esw,
147 struct mlx5_eswitch_rep *rep);
148 u16 vport;
149 u8 hw_id[ETH_ALEN];
150 struct net_device *netdev;
151
152 struct mlx5_flow_handle *vport_rx_rule;
153 struct list_head vport_sqs_list;
154 u16 vlan;
155 u32 vlan_refcount;
156 bool valid;
157 };
158
159 struct mlx5_esw_offload {
160 struct mlx5_flow_table *ft_offloads;
161 struct mlx5_flow_group *vport_rx_group;
162 struct mlx5_eswitch_rep *vport_reps;
163 DECLARE_HASHTABLE(encap_tbl, 8);
164 DECLARE_HASHTABLE(mod_hdr_tbl, 8);
165 u8 inline_mode;
166 u64 num_flows;
167 u8 encap;
168 };
169
170 /* E-Switch MC FDB table hash node */
171 struct esw_mc_addr { /* SRIOV only */
172 struct l2addr_node node;
173 struct mlx5_flow_handle *uplink_rule; /* Forward to uplink rule */
174 u32 refcnt;
175 };
176
177 struct mlx5_eswitch {
178 struct mlx5_core_dev *dev;
179 struct mlx5_eswitch_fdb fdb_table;
180 struct hlist_head mc_table[MLX5_L2_ADDR_HASH_SIZE];
181 struct workqueue_struct *work_queue;
182 struct mlx5_vport *vports;
183 int total_vports;
184 int enabled_vports;
185 /* Synchronize between vport change events
186 * and async SRIOV admin state changes
187 */
188 struct mutex state_lock;
189 struct esw_mc_addr mc_promisc;
190
191 struct {
192 bool enabled;
193 u32 root_tsar_id;
194 } qos;
195
196 struct mlx5_esw_offload offloads;
197 int mode;
198 };
199
200 void esw_offloads_cleanup(struct mlx5_eswitch *esw, int nvports);
201 int esw_offloads_init(struct mlx5_eswitch *esw, int nvports);
202
203 /* E-Switch API */
204 int mlx5_eswitch_init(struct mlx5_core_dev *dev);
205 void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
206 void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe);
207 int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode);
208 void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw);
209 int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
210 int vport, u8 mac[ETH_ALEN]);
211 int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
212 int vport, int link_state);
213 int mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
214 int vport, u16 vlan, u8 qos);
215 int mlx5_eswitch_set_vport_spoofchk(struct mlx5_eswitch *esw,
216 int vport, bool spoofchk);
217 int mlx5_eswitch_set_vport_trust(struct mlx5_eswitch *esw,
218 int vport_num, bool setting);
219 int mlx5_eswitch_set_vport_rate(struct mlx5_eswitch *esw, int vport,
220 u32 max_rate, u32 min_rate);
221 int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
222 int vport, struct ifla_vf_info *ivi);
223 int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
224 int vport,
225 struct ifla_vf_stats *vf_stats);
226
227 struct mlx5_flow_spec;
228 struct mlx5_esw_flow_attr;
229
230 struct mlx5_flow_handle *
231 mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
232 struct mlx5_flow_spec *spec,
233 struct mlx5_esw_flow_attr *attr);
234 void
235 mlx5_eswitch_del_offloaded_rule(struct mlx5_eswitch *esw,
236 struct mlx5_flow_handle *rule,
237 struct mlx5_esw_flow_attr *attr);
238
239 struct mlx5_flow_handle *
240 mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch *esw, int vport, u32 tirn);
241
242 enum {
243 SET_VLAN_STRIP = BIT(0),
244 SET_VLAN_INSERT = BIT(1)
245 };
246
247 #define MLX5_FLOW_CONTEXT_ACTION_VLAN_POP 0x4000
248 #define MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH 0x8000
249
250 struct mlx5_esw_flow_attr {
251 struct mlx5_eswitch_rep *in_rep;
252 struct mlx5_eswitch_rep *out_rep;
253
254 int action;
255 u16 vlan;
256 bool vlan_handled;
257 u32 encap_id;
258 u32 mod_hdr_id;
259 struct mlx5e_tc_flow_parse_attr *parse_attr;
260 };
261
262 int mlx5_eswitch_sqs2vport_start(struct mlx5_eswitch *esw,
263 struct mlx5_eswitch_rep *rep,
264 u16 *sqns_array, int sqns_num);
265 void mlx5_eswitch_sqs2vport_stop(struct mlx5_eswitch *esw,
266 struct mlx5_eswitch_rep *rep);
267
268 int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode);
269 int mlx5_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode);
270 int mlx5_devlink_eswitch_inline_mode_set(struct devlink *devlink, u8 mode);
271 int mlx5_devlink_eswitch_inline_mode_get(struct devlink *devlink, u8 *mode);
272 int mlx5_eswitch_inline_mode_get(struct mlx5_eswitch *esw, int nvfs, u8 *mode);
273 int mlx5_devlink_eswitch_encap_mode_set(struct devlink *devlink, u8 encap);
274 int mlx5_devlink_eswitch_encap_mode_get(struct devlink *devlink, u8 *encap);
275 void mlx5_eswitch_register_vport_rep(struct mlx5_eswitch *esw,
276 int vport_index,
277 struct mlx5_eswitch_rep *rep);
278 void mlx5_eswitch_unregister_vport_rep(struct mlx5_eswitch *esw,
279 int vport_index);
280 struct net_device *mlx5_eswitch_get_uplink_netdev(struct mlx5_eswitch *esw);
281
282 int mlx5_eswitch_add_vlan_action(struct mlx5_eswitch *esw,
283 struct mlx5_esw_flow_attr *attr);
284 int mlx5_eswitch_del_vlan_action(struct mlx5_eswitch *esw,
285 struct mlx5_esw_flow_attr *attr);
286 int __mlx5_eswitch_set_vport_vlan(struct mlx5_eswitch *esw,
287 int vport, u16 vlan, u8 qos, u8 set_flags);
288
289 #define MLX5_DEBUG_ESWITCH_MASK BIT(3)
290
291 #define esw_info(dev, format, ...) \
292 pr_info("(%s): E-Switch: " format, (dev)->priv.name, ##__VA_ARGS__)
293
294 #define esw_warn(dev, format, ...) \
295 pr_warn("(%s): E-Switch: " format, (dev)->priv.name, ##__VA_ARGS__)
296
297 #define esw_debug(dev, format, ...) \
298 mlx5_core_dbg_mask(dev, MLX5_DEBUG_ESWITCH_MASK, format, ##__VA_ARGS__)
299 #else /* CONFIG_MLX5_ESWITCH */
300 /* eswitch API stubs */
mlx5_eswitch_init(struct mlx5_core_dev * dev)301 static inline int mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }
mlx5_eswitch_cleanup(struct mlx5_eswitch * esw)302 static inline void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw) {}
mlx5_eswitch_vport_event(struct mlx5_eswitch * esw,struct mlx5_eqe * eqe)303 static inline void mlx5_eswitch_vport_event(struct mlx5_eswitch *esw, struct mlx5_eqe *eqe) {}
mlx5_eswitch_enable_sriov(struct mlx5_eswitch * esw,int nvfs,int mode)304 static inline int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode) { return 0; }
mlx5_eswitch_disable_sriov(struct mlx5_eswitch * esw)305 static inline void mlx5_eswitch_disable_sriov(struct mlx5_eswitch *esw) {}
306 #endif /* CONFIG_MLX5_ESWITCH */
307
308 #endif /* __MLX5_ESWITCH_H__ */
309