net/mlx5e: Pass actions param to actions_match_supported()
[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / en / tc / post_act.c
1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 // Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
3
4 #include "en_tc.h"
5 #include "post_act.h"
6 #include "mlx5_core.h"
7 #include "fs_core.h"
8
9 struct mlx5e_post_act {
10         enum mlx5_flow_namespace_type ns_type;
11         struct mlx5_fs_chains *chains;
12         struct mlx5_flow_table *ft;
13         struct mlx5e_priv *priv;
14         struct xarray ids;
15 };
16
17 struct mlx5e_post_act_handle {
18         enum mlx5_flow_namespace_type ns_type;
19         struct mlx5_flow_attr *attr;
20         struct mlx5_flow_handle *rule;
21         u32 id;
22 };
23
24 #define MLX5_POST_ACTION_BITS (mlx5e_tc_attr_to_reg_mappings[FTEID_TO_REG].mlen)
25 #define MLX5_POST_ACTION_MAX GENMASK(MLX5_POST_ACTION_BITS - 1, 0)
26 #define MLX5_POST_ACTION_MASK MLX5_POST_ACTION_MAX
27
28 struct mlx5e_post_act *
29 mlx5e_tc_post_act_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains,
30                        enum mlx5_flow_namespace_type ns_type)
31 {
32         enum fs_flow_table_type table_type = ns_type == MLX5_FLOW_NAMESPACE_FDB ?
33                                              FS_FT_FDB : FS_FT_NIC_RX;
34         struct mlx5e_post_act *post_act;
35         int err;
36
37         if (!MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ignore_flow_level, table_type)) {
38                 if (priv->mdev->coredev_type != MLX5_COREDEV_VF)
39                         mlx5_core_warn(priv->mdev, "firmware level support is missing\n");
40                 err = -EOPNOTSUPP;
41                 goto err_check;
42         }
43
44         post_act = kzalloc(sizeof(*post_act), GFP_KERNEL);
45         if (!post_act) {
46                 err = -ENOMEM;
47                 goto err_check;
48         }
49         post_act->ft = mlx5_chains_create_global_table(chains);
50         if (IS_ERR(post_act->ft)) {
51                 err = PTR_ERR(post_act->ft);
52                 mlx5_core_warn(priv->mdev, "failed to create post action table, err: %d\n", err);
53                 goto err_ft;
54         }
55         post_act->chains = chains;
56         post_act->ns_type = ns_type;
57         post_act->priv = priv;
58         xa_init_flags(&post_act->ids, XA_FLAGS_ALLOC1);
59         return post_act;
60
61 err_ft:
62         kfree(post_act);
63 err_check:
64         return ERR_PTR(err);
65 }
66
67 void
68 mlx5e_tc_post_act_destroy(struct mlx5e_post_act *post_act)
69 {
70         if (IS_ERR_OR_NULL(post_act))
71                 return;
72
73         xa_destroy(&post_act->ids);
74         mlx5_chains_destroy_global_table(post_act->chains, post_act->ft);
75         kfree(post_act);
76 }
77
78 struct mlx5e_post_act_handle *
79 mlx5e_tc_post_act_add(struct mlx5e_post_act *post_act, struct mlx5_flow_attr *attr)
80 {
81         u32 attr_sz = ns_to_attr_sz(post_act->ns_type);
82         struct mlx5e_post_act_handle *handle = NULL;
83         struct mlx5_flow_attr *post_attr = NULL;
84         struct mlx5_flow_spec *spec = NULL;
85         int err;
86
87         handle = kzalloc(sizeof(*handle), GFP_KERNEL);
88         spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
89         post_attr = mlx5_alloc_flow_attr(post_act->ns_type);
90         if (!handle || !spec || !post_attr) {
91                 kfree(post_attr);
92                 kvfree(spec);
93                 kfree(handle);
94                 return ERR_PTR(-ENOMEM);
95         }
96
97         memcpy(post_attr, attr, attr_sz);
98         post_attr->chain = 0;
99         post_attr->prio = 0;
100         post_attr->ft = post_act->ft;
101         post_attr->inner_match_level = MLX5_MATCH_NONE;
102         post_attr->outer_match_level = MLX5_MATCH_NONE;
103         post_attr->action &= ~(MLX5_FLOW_CONTEXT_ACTION_DECAP);
104         post_attr->flags &= ~MLX5_ATTR_FLAG_SAMPLE;
105
106         handle->ns_type = post_act->ns_type;
107         /* Splits were handled before post action */
108         if (handle->ns_type == MLX5_FLOW_NAMESPACE_FDB)
109                 post_attr->esw_attr->split_count = 0;
110
111         err = xa_alloc(&post_act->ids, &handle->id, post_attr,
112                        XA_LIMIT(1, MLX5_POST_ACTION_MAX), GFP_KERNEL);
113         if (err)
114                 goto err_xarray;
115
116         /* Post action rule matches on fte_id and executes original rule's
117          * tc rule action
118          */
119         mlx5e_tc_match_to_reg_match(spec, FTEID_TO_REG,
120                                     handle->id, MLX5_POST_ACTION_MASK);
121
122         handle->rule = mlx5_tc_rule_insert(post_act->priv, spec, post_attr);
123         if (IS_ERR(handle->rule)) {
124                 err = PTR_ERR(handle->rule);
125                 netdev_warn(post_act->priv->netdev, "Failed to add post action rule");
126                 goto err_rule;
127         }
128         handle->attr = post_attr;
129
130         kvfree(spec);
131         return handle;
132
133 err_rule:
134         xa_erase(&post_act->ids, handle->id);
135 err_xarray:
136         kfree(post_attr);
137         kvfree(spec);
138         kfree(handle);
139         return ERR_PTR(err);
140 }
141
142 void
143 mlx5e_tc_post_act_del(struct mlx5e_post_act *post_act, struct mlx5e_post_act_handle *handle)
144 {
145         mlx5_tc_rule_delete(post_act->priv, handle->rule, handle->attr);
146         xa_erase(&post_act->ids, handle->id);
147         kfree(handle->attr);
148         kfree(handle);
149 }
150
151 struct mlx5_flow_table *
152 mlx5e_tc_post_act_get_ft(struct mlx5e_post_act *post_act)
153 {
154         return post_act->ft;
155 }
156
157 /* Allocate a header modify action to write the post action handle fte id to a register. */
158 int
159 mlx5e_tc_post_act_set_handle(struct mlx5_core_dev *dev,
160                              struct mlx5e_post_act_handle *handle,
161                              struct mlx5e_tc_mod_hdr_acts *acts)
162 {
163         return mlx5e_tc_match_to_reg_set(dev, acts, handle->ns_type, FTEID_TO_REG, handle->id);
164 }