d8b1195fba3dda53e9029e771828f523ee7b8a87
[cascardo/linux.git] / drivers / net / ethernet / mellanox / mlx5 / core / fs_cmd.c
1 /*
2  * Copyright (c) 2015, 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 #include <linux/mlx5/driver.h>
34 #include <linux/mlx5/device.h>
35 #include <linux/mlx5/mlx5_ifc.h>
36
37 #include "fs_core.h"
38 #include "fs_cmd.h"
39 #include "mlx5_core.h"
40
41 int mlx5_cmd_update_root_ft(struct mlx5_core_dev *dev,
42                             struct mlx5_flow_table *ft)
43 {
44         u32 in[MLX5_ST_SZ_DW(set_flow_table_root_in)];
45         u32 out[MLX5_ST_SZ_DW(set_flow_table_root_out)];
46
47         memset(in, 0, sizeof(in));
48
49         MLX5_SET(set_flow_table_root_in, in, opcode,
50                  MLX5_CMD_OP_SET_FLOW_TABLE_ROOT);
51         MLX5_SET(set_flow_table_root_in, in, table_type, ft->type);
52         MLX5_SET(set_flow_table_root_in, in, table_id, ft->id);
53
54         memset(out, 0, sizeof(out));
55         return mlx5_cmd_exec_check_status(dev, in, sizeof(in), out,
56                                           sizeof(out));
57 }
58
59 int mlx5_cmd_create_flow_table(struct mlx5_core_dev *dev,
60                                enum fs_flow_table_type type, unsigned int level,
61                                unsigned int log_size, unsigned int *table_id)
62 {
63         u32 out[MLX5_ST_SZ_DW(create_flow_table_out)];
64         u32 in[MLX5_ST_SZ_DW(create_flow_table_in)];
65         int err;
66
67         memset(in, 0, sizeof(in));
68
69         MLX5_SET(create_flow_table_in, in, opcode,
70                  MLX5_CMD_OP_CREATE_FLOW_TABLE);
71
72         MLX5_SET(create_flow_table_in, in, table_type, type);
73         MLX5_SET(create_flow_table_in, in, level, level);
74         MLX5_SET(create_flow_table_in, in, log_size, log_size);
75
76         memset(out, 0, sizeof(out));
77         err = mlx5_cmd_exec_check_status(dev, in, sizeof(in), out,
78                                          sizeof(out));
79
80         if (!err)
81                 *table_id = MLX5_GET(create_flow_table_out, out,
82                                      table_id);
83         return err;
84 }
85
86 int mlx5_cmd_destroy_flow_table(struct mlx5_core_dev *dev,
87                                 struct mlx5_flow_table *ft)
88 {
89         u32 in[MLX5_ST_SZ_DW(destroy_flow_table_in)];
90         u32 out[MLX5_ST_SZ_DW(destroy_flow_table_out)];
91
92         memset(in, 0, sizeof(in));
93         memset(out, 0, sizeof(out));
94
95         MLX5_SET(destroy_flow_table_in, in, opcode,
96                  MLX5_CMD_OP_DESTROY_FLOW_TABLE);
97         MLX5_SET(destroy_flow_table_in, in, table_type, ft->type);
98         MLX5_SET(destroy_flow_table_in, in, table_id, ft->id);
99
100         return mlx5_cmd_exec_check_status(dev, in, sizeof(in), out,
101                                           sizeof(out));
102 }
103
104 int mlx5_cmd_create_flow_group(struct mlx5_core_dev *dev,
105                                struct mlx5_flow_table *ft,
106                                u32 *in,
107                                unsigned int *group_id)
108 {
109         int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
110         u32 out[MLX5_ST_SZ_DW(create_flow_group_out)];
111         int err;
112
113         memset(out, 0, sizeof(out));
114
115         MLX5_SET(create_flow_group_in, in, opcode,
116                  MLX5_CMD_OP_CREATE_FLOW_GROUP);
117         MLX5_SET(create_flow_group_in, in, table_type, ft->type);
118         MLX5_SET(create_flow_group_in, in, table_id, ft->id);
119
120         err = mlx5_cmd_exec_check_status(dev, in,
121                                          inlen, out,
122                                          sizeof(out));
123         if (!err)
124                 *group_id = MLX5_GET(create_flow_group_out, out,
125                                      group_id);
126
127         return err;
128 }
129
130 int mlx5_cmd_destroy_flow_group(struct mlx5_core_dev *dev,
131                                 struct mlx5_flow_table *ft,
132                                 unsigned int group_id)
133 {
134         u32 out[MLX5_ST_SZ_DW(destroy_flow_group_out)];
135         u32 in[MLX5_ST_SZ_DW(destroy_flow_group_in)];
136
137         memset(in, 0, sizeof(in));
138         memset(out, 0, sizeof(out));
139
140         MLX5_SET(destroy_flow_group_in, in, opcode,
141                  MLX5_CMD_OP_DESTROY_FLOW_GROUP);
142         MLX5_SET(destroy_flow_group_in, in, table_type, ft->type);
143         MLX5_SET(destroy_flow_group_in, in, table_id, ft->id);
144         MLX5_SET(destroy_flow_group_in, in, group_id, group_id);
145
146         return mlx5_cmd_exec_check_status(dev, in, sizeof(in), out,
147                                           sizeof(out));
148 }
149
150 static int mlx5_cmd_set_fte(struct mlx5_core_dev *dev,
151                             int opmod, int modify_mask,
152                             struct mlx5_flow_table *ft,
153                             unsigned group_id,
154                             struct fs_fte *fte)
155 {
156         unsigned int inlen = MLX5_ST_SZ_BYTES(set_fte_in) +
157                 fte->dests_size * MLX5_ST_SZ_BYTES(dest_format_struct);
158         u32 out[MLX5_ST_SZ_DW(set_fte_out)];
159         struct mlx5_flow_rule *dst;
160         void *in_flow_context;
161         void *in_match_value;
162         void *in_dests;
163         u32 *in;
164         int err;
165
166         in = mlx5_vzalloc(inlen);
167         if (!in) {
168                 mlx5_core_warn(dev, "failed to allocate inbox\n");
169                 return -ENOMEM;
170         }
171
172         MLX5_SET(set_fte_in, in, opcode, MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY);
173         MLX5_SET(set_fte_in, in, op_mod, opmod);
174         MLX5_SET(set_fte_in, in, modify_enable_mask, modify_mask);
175         MLX5_SET(set_fte_in, in, table_type, ft->type);
176         MLX5_SET(set_fte_in, in, table_id,   ft->id);
177         MLX5_SET(set_fte_in, in, flow_index, fte->index);
178
179         in_flow_context = MLX5_ADDR_OF(set_fte_in, in, flow_context);
180         MLX5_SET(flow_context, in_flow_context, group_id, group_id);
181         MLX5_SET(flow_context, in_flow_context, flow_tag, fte->flow_tag);
182         MLX5_SET(flow_context, in_flow_context, action, fte->action);
183         MLX5_SET(flow_context, in_flow_context, destination_list_size,
184                  fte->dests_size);
185         in_match_value = MLX5_ADDR_OF(flow_context, in_flow_context,
186                                       match_value);
187         memcpy(in_match_value, &fte->val, MLX5_ST_SZ_BYTES(fte_match_param));
188
189         in_dests = MLX5_ADDR_OF(flow_context, in_flow_context, destination);
190         list_for_each_entry(dst, &fte->node.children, node.list) {
191                 unsigned int id;
192
193                 MLX5_SET(dest_format_struct, in_dests, destination_type,
194                          dst->dest_attr.type);
195                 if (dst->dest_attr.type ==
196                     MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE)
197                         id = dst->dest_attr.ft->id;
198                 else
199                         id = dst->dest_attr.tir_num;
200                 MLX5_SET(dest_format_struct, in_dests, destination_id, id);
201                 in_dests += MLX5_ST_SZ_BYTES(dest_format_struct);
202         }
203         memset(out, 0, sizeof(out));
204         err = mlx5_cmd_exec_check_status(dev, in, inlen, out,
205                                          sizeof(out));
206         kvfree(in);
207
208         return err;
209 }
210
211 int mlx5_cmd_create_fte(struct mlx5_core_dev *dev,
212                         struct mlx5_flow_table *ft,
213                         unsigned group_id,
214                         struct fs_fte *fte)
215 {
216         return  mlx5_cmd_set_fte(dev, 0, 0, ft, group_id, fte);
217 }
218
219 int mlx5_cmd_update_fte(struct mlx5_core_dev *dev,
220                         struct mlx5_flow_table *ft,
221                         unsigned group_id,
222                         struct fs_fte *fte)
223 {
224         int opmod;
225         int modify_mask;
226         int atomic_mod_cap = MLX5_CAP_FLOWTABLE(dev,
227                                                 flow_table_properties_nic_receive.
228                                                 flow_modify_en);
229         if (!atomic_mod_cap)
230                 return -ENOTSUPP;
231         opmod = 1;
232         modify_mask = 1 <<
233                 MLX5_SET_FTE_MODIFY_ENABLE_MASK_DESTINATION_LIST;
234
235         return  mlx5_cmd_set_fte(dev, opmod, modify_mask, ft, group_id, fte);
236 }
237
238 int mlx5_cmd_delete_fte(struct mlx5_core_dev *dev,
239                         struct mlx5_flow_table *ft,
240                         unsigned int index)
241 {
242         u32 out[MLX5_ST_SZ_DW(delete_fte_out)];
243         u32 in[MLX5_ST_SZ_DW(delete_fte_in)];
244         int err;
245
246         memset(in, 0, sizeof(in));
247         memset(out, 0, sizeof(out));
248
249         MLX5_SET(delete_fte_in, in, opcode, MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
250         MLX5_SET(delete_fte_in, in, table_type, ft->type);
251         MLX5_SET(delete_fte_in, in, table_id, ft->id);
252         MLX5_SET(delete_fte_in, in, flow_index, index);
253
254         err =  mlx5_cmd_exec_check_status(dev, in, sizeof(in), out, sizeof(out));
255
256         return err;
257 }