1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2019 Mellanox Technologies. */
3
4 #include "dr_types.h"
5
dr_table_set_miss_action_nic(struct mlx5dr_domain * dmn,struct mlx5dr_table_rx_tx * nic_tbl,struct mlx5dr_action * action)6 static int dr_table_set_miss_action_nic(struct mlx5dr_domain *dmn,
7 struct mlx5dr_table_rx_tx *nic_tbl,
8 struct mlx5dr_action *action)
9 {
10 struct mlx5dr_matcher_rx_tx *last_nic_matcher = NULL;
11 struct mlx5dr_htbl_connect_info info;
12 struct mlx5dr_ste_htbl *last_htbl;
13 struct mlx5dr_icm_chunk *chunk;
14 int ret;
15
16 if (!list_empty(&nic_tbl->nic_matcher_list))
17 last_nic_matcher = list_last_entry(&nic_tbl->nic_matcher_list,
18 struct mlx5dr_matcher_rx_tx,
19 list_node);
20
21 if (last_nic_matcher)
22 last_htbl = last_nic_matcher->e_anchor;
23 else
24 last_htbl = nic_tbl->s_anchor;
25
26 if (action) {
27 chunk = nic_tbl->nic_dmn->type == DR_DOMAIN_NIC_TYPE_RX ?
28 action->dest_tbl->tbl->rx.s_anchor->chunk :
29 action->dest_tbl->tbl->tx.s_anchor->chunk;
30 nic_tbl->default_icm_addr = mlx5dr_icm_pool_get_chunk_icm_addr(chunk);
31 } else {
32 nic_tbl->default_icm_addr = nic_tbl->nic_dmn->default_icm_addr;
33 }
34
35 info.type = CONNECT_MISS;
36 info.miss_icm_addr = nic_tbl->default_icm_addr;
37
38 ret = mlx5dr_ste_htbl_init_and_postsend(dmn, nic_tbl->nic_dmn,
39 last_htbl, &info, true);
40 if (ret)
41 mlx5dr_dbg(dmn, "Failed to set NIC RX/TX miss action, ret %d\n", ret);
42
43 return ret;
44 }
45
mlx5dr_table_set_miss_action(struct mlx5dr_table * tbl,struct mlx5dr_action * action)46 int mlx5dr_table_set_miss_action(struct mlx5dr_table *tbl,
47 struct mlx5dr_action *action)
48 {
49 int ret = -EOPNOTSUPP;
50
51 if (action && action->action_type != DR_ACTION_TYP_FT)
52 return -EOPNOTSUPP;
53
54 mlx5dr_domain_lock(tbl->dmn);
55
56 if (tbl->dmn->type == MLX5DR_DOMAIN_TYPE_NIC_RX ||
57 tbl->dmn->type == MLX5DR_DOMAIN_TYPE_FDB) {
58 ret = dr_table_set_miss_action_nic(tbl->dmn, &tbl->rx, action);
59 if (ret)
60 goto out;
61 }
62
63 if (tbl->dmn->type == MLX5DR_DOMAIN_TYPE_NIC_TX ||
64 tbl->dmn->type == MLX5DR_DOMAIN_TYPE_FDB) {
65 ret = dr_table_set_miss_action_nic(tbl->dmn, &tbl->tx, action);
66 if (ret)
67 goto out;
68 }
69
70 if (ret)
71 goto out;
72
73 /* Release old action */
74 if (tbl->miss_action)
75 refcount_dec(&tbl->miss_action->refcount);
76
77 /* Set new miss action */
78 tbl->miss_action = action;
79 if (tbl->miss_action)
80 refcount_inc(&action->refcount);
81
82 out:
83 mlx5dr_domain_unlock(tbl->dmn);
84 return ret;
85 }
86
dr_table_uninit_nic(struct mlx5dr_table_rx_tx * nic_tbl)87 static void dr_table_uninit_nic(struct mlx5dr_table_rx_tx *nic_tbl)
88 {
89 mlx5dr_htbl_put(nic_tbl->s_anchor);
90 }
91
dr_table_uninit_fdb(struct mlx5dr_table * tbl)92 static void dr_table_uninit_fdb(struct mlx5dr_table *tbl)
93 {
94 dr_table_uninit_nic(&tbl->rx);
95 dr_table_uninit_nic(&tbl->tx);
96 }
97
dr_table_uninit(struct mlx5dr_table * tbl)98 static void dr_table_uninit(struct mlx5dr_table *tbl)
99 {
100 mlx5dr_domain_lock(tbl->dmn);
101
102 switch (tbl->dmn->type) {
103 case MLX5DR_DOMAIN_TYPE_NIC_RX:
104 dr_table_uninit_nic(&tbl->rx);
105 break;
106 case MLX5DR_DOMAIN_TYPE_NIC_TX:
107 dr_table_uninit_nic(&tbl->tx);
108 break;
109 case MLX5DR_DOMAIN_TYPE_FDB:
110 dr_table_uninit_fdb(tbl);
111 break;
112 default:
113 WARN_ON(true);
114 break;
115 }
116
117 mlx5dr_domain_unlock(tbl->dmn);
118 }
119
dr_table_init_nic(struct mlx5dr_domain * dmn,struct mlx5dr_table_rx_tx * nic_tbl)120 static int dr_table_init_nic(struct mlx5dr_domain *dmn,
121 struct mlx5dr_table_rx_tx *nic_tbl)
122 {
123 struct mlx5dr_domain_rx_tx *nic_dmn = nic_tbl->nic_dmn;
124 struct mlx5dr_htbl_connect_info info;
125 int ret;
126
127 INIT_LIST_HEAD(&nic_tbl->nic_matcher_list);
128
129 nic_tbl->default_icm_addr = nic_dmn->default_icm_addr;
130
131 nic_tbl->s_anchor = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
132 DR_CHUNK_SIZE_1,
133 MLX5DR_STE_LU_TYPE_DONT_CARE,
134 0);
135 if (!nic_tbl->s_anchor) {
136 mlx5dr_err(dmn, "Failed allocating htbl\n");
137 return -ENOMEM;
138 }
139
140 info.type = CONNECT_MISS;
141 info.miss_icm_addr = nic_dmn->default_icm_addr;
142 ret = mlx5dr_ste_htbl_init_and_postsend(dmn, nic_dmn,
143 nic_tbl->s_anchor,
144 &info, true);
145 if (ret) {
146 mlx5dr_err(dmn, "Failed int and send htbl\n");
147 goto free_s_anchor;
148 }
149
150 mlx5dr_htbl_get(nic_tbl->s_anchor);
151
152 return 0;
153
154 free_s_anchor:
155 mlx5dr_ste_htbl_free(nic_tbl->s_anchor);
156 return ret;
157 }
158
dr_table_init_fdb(struct mlx5dr_table * tbl)159 static int dr_table_init_fdb(struct mlx5dr_table *tbl)
160 {
161 int ret;
162
163 ret = dr_table_init_nic(tbl->dmn, &tbl->rx);
164 if (ret)
165 return ret;
166
167 ret = dr_table_init_nic(tbl->dmn, &tbl->tx);
168 if (ret)
169 goto destroy_rx;
170
171 return 0;
172
173 destroy_rx:
174 dr_table_uninit_nic(&tbl->rx);
175 return ret;
176 }
177
dr_table_init(struct mlx5dr_table * tbl)178 static int dr_table_init(struct mlx5dr_table *tbl)
179 {
180 int ret = 0;
181
182 INIT_LIST_HEAD(&tbl->matcher_list);
183
184 mlx5dr_domain_lock(tbl->dmn);
185
186 switch (tbl->dmn->type) {
187 case MLX5DR_DOMAIN_TYPE_NIC_RX:
188 tbl->table_type = MLX5_FLOW_TABLE_TYPE_NIC_RX;
189 tbl->rx.nic_dmn = &tbl->dmn->info.rx;
190 ret = dr_table_init_nic(tbl->dmn, &tbl->rx);
191 break;
192 case MLX5DR_DOMAIN_TYPE_NIC_TX:
193 tbl->table_type = MLX5_FLOW_TABLE_TYPE_NIC_TX;
194 tbl->tx.nic_dmn = &tbl->dmn->info.tx;
195 ret = dr_table_init_nic(tbl->dmn, &tbl->tx);
196 break;
197 case MLX5DR_DOMAIN_TYPE_FDB:
198 tbl->table_type = MLX5_FLOW_TABLE_TYPE_FDB;
199 tbl->rx.nic_dmn = &tbl->dmn->info.rx;
200 tbl->tx.nic_dmn = &tbl->dmn->info.tx;
201 ret = dr_table_init_fdb(tbl);
202 break;
203 default:
204 WARN_ON(true);
205 break;
206 }
207
208 mlx5dr_domain_unlock(tbl->dmn);
209
210 return ret;
211 }
212
dr_table_destroy_sw_owned_tbl(struct mlx5dr_table * tbl)213 static int dr_table_destroy_sw_owned_tbl(struct mlx5dr_table *tbl)
214 {
215 return mlx5dr_cmd_destroy_flow_table(tbl->dmn->mdev,
216 tbl->table_id,
217 tbl->table_type);
218 }
219
dr_table_create_sw_owned_tbl(struct mlx5dr_table * tbl,u16 uid)220 static int dr_table_create_sw_owned_tbl(struct mlx5dr_table *tbl, u16 uid)
221 {
222 bool en_encap = !!(tbl->flags & MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT);
223 bool en_decap = !!(tbl->flags & MLX5_FLOW_TABLE_TUNNEL_EN_DECAP);
224 struct mlx5dr_cmd_create_flow_table_attr ft_attr = {};
225 u64 icm_addr_rx = 0;
226 u64 icm_addr_tx = 0;
227 int ret;
228
229 if (tbl->rx.s_anchor)
230 icm_addr_rx = mlx5dr_icm_pool_get_chunk_icm_addr(tbl->rx.s_anchor->chunk);
231
232 if (tbl->tx.s_anchor)
233 icm_addr_tx = mlx5dr_icm_pool_get_chunk_icm_addr(tbl->tx.s_anchor->chunk);
234
235 ft_attr.table_type = tbl->table_type;
236 ft_attr.icm_addr_rx = icm_addr_rx;
237 ft_attr.icm_addr_tx = icm_addr_tx;
238 ft_attr.level = tbl->dmn->info.caps.max_ft_level - 1;
239 ft_attr.sw_owner = true;
240 ft_attr.decap_en = en_decap;
241 ft_attr.reformat_en = en_encap;
242 ft_attr.uid = uid;
243
244 ret = mlx5dr_cmd_create_flow_table(tbl->dmn->mdev, &ft_attr,
245 NULL, &tbl->table_id);
246
247 return ret;
248 }
249
mlx5dr_table_create(struct mlx5dr_domain * dmn,u32 level,u32 flags,u16 uid)250 struct mlx5dr_table *mlx5dr_table_create(struct mlx5dr_domain *dmn, u32 level,
251 u32 flags, u16 uid)
252 {
253 struct mlx5dr_table *tbl;
254 int ret;
255
256 refcount_inc(&dmn->refcount);
257
258 tbl = kzalloc(sizeof(*tbl), GFP_KERNEL);
259 if (!tbl)
260 goto dec_ref;
261
262 tbl->dmn = dmn;
263 tbl->level = level;
264 tbl->flags = flags;
265 refcount_set(&tbl->refcount, 1);
266
267 ret = dr_table_init(tbl);
268 if (ret)
269 goto free_tbl;
270
271 ret = dr_table_create_sw_owned_tbl(tbl, uid);
272 if (ret)
273 goto uninit_tbl;
274
275 INIT_LIST_HEAD(&tbl->dbg_node);
276 mlx5dr_dbg_tbl_add(tbl);
277 return tbl;
278
279 uninit_tbl:
280 dr_table_uninit(tbl);
281 free_tbl:
282 kfree(tbl);
283 dec_ref:
284 refcount_dec(&dmn->refcount);
285 return NULL;
286 }
287
mlx5dr_table_destroy(struct mlx5dr_table * tbl)288 int mlx5dr_table_destroy(struct mlx5dr_table *tbl)
289 {
290 int ret;
291
292 if (WARN_ON_ONCE(refcount_read(&tbl->refcount) > 1))
293 return -EBUSY;
294
295 mlx5dr_dbg_tbl_del(tbl);
296 ret = dr_table_destroy_sw_owned_tbl(tbl);
297 if (ret)
298 return ret;
299
300 dr_table_uninit(tbl);
301
302 if (tbl->miss_action)
303 refcount_dec(&tbl->miss_action->refcount);
304
305 refcount_dec(&tbl->dmn->refcount);
306 kfree(tbl);
307
308 return ret;
309 }
310
mlx5dr_table_get_id(struct mlx5dr_table * tbl)311 u32 mlx5dr_table_get_id(struct mlx5dr_table *tbl)
312 {
313 return tbl->table_id;
314 }
315
mlx5dr_table_get_from_fs_ft(struct mlx5_flow_table * ft)316 struct mlx5dr_table *mlx5dr_table_get_from_fs_ft(struct mlx5_flow_table *ft)
317 {
318 return ft->fs_dr_table.dr_table;
319 }
320