1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. */
3 
4 #include "en_tc.h"
5 #include "en/tc_ct.h"
6 #include "en/tc/ct_fs.h"
7 
8 #define ct_dbg(fmt, args...)\
9 	netdev_dbg(fs->netdev, "ct_fs_dmfs debug: " fmt "\n", ##args)
10 
11 struct mlx5_ct_fs_dmfs_rule {
12 	struct mlx5_ct_fs_rule fs_rule;
13 	struct mlx5_flow_handle *rule;
14 	struct mlx5_flow_attr *attr;
15 };
16 
17 static int
mlx5_ct_fs_dmfs_init(struct mlx5_ct_fs * fs,struct mlx5_flow_table * ct,struct mlx5_flow_table * ct_nat,struct mlx5_flow_table * post_ct)18 mlx5_ct_fs_dmfs_init(struct mlx5_ct_fs *fs, struct mlx5_flow_table *ct,
19 		     struct mlx5_flow_table *ct_nat, struct mlx5_flow_table *post_ct)
20 {
21 	return 0;
22 }
23 
24 static void
mlx5_ct_fs_dmfs_destroy(struct mlx5_ct_fs * fs)25 mlx5_ct_fs_dmfs_destroy(struct mlx5_ct_fs *fs)
26 {
27 }
28 
29 static struct mlx5_ct_fs_rule *
mlx5_ct_fs_dmfs_ct_rule_add(struct mlx5_ct_fs * fs,struct mlx5_flow_spec * spec,struct mlx5_flow_attr * attr,struct flow_rule * flow_rule)30 mlx5_ct_fs_dmfs_ct_rule_add(struct mlx5_ct_fs *fs, struct mlx5_flow_spec *spec,
31 			    struct mlx5_flow_attr *attr, struct flow_rule *flow_rule)
32 {
33 	struct mlx5e_priv *priv = netdev_priv(fs->netdev);
34 	struct mlx5_ct_fs_dmfs_rule *dmfs_rule;
35 	int err;
36 
37 	dmfs_rule = kzalloc(sizeof(*dmfs_rule), GFP_KERNEL);
38 	if (!dmfs_rule)
39 		return ERR_PTR(-ENOMEM);
40 
41 	dmfs_rule->rule = mlx5_tc_rule_insert(priv, spec, attr);
42 	if (IS_ERR(dmfs_rule->rule)) {
43 		err = PTR_ERR(dmfs_rule->rule);
44 		ct_dbg("Failed to add ct entry fs rule");
45 		goto err_insert;
46 	}
47 
48 	dmfs_rule->attr = attr;
49 
50 	return &dmfs_rule->fs_rule;
51 
52 err_insert:
53 	kfree(dmfs_rule);
54 	return ERR_PTR(err);
55 }
56 
57 static void
mlx5_ct_fs_dmfs_ct_rule_del(struct mlx5_ct_fs * fs,struct mlx5_ct_fs_rule * fs_rule)58 mlx5_ct_fs_dmfs_ct_rule_del(struct mlx5_ct_fs *fs, struct mlx5_ct_fs_rule *fs_rule)
59 {
60 	struct mlx5_ct_fs_dmfs_rule *dmfs_rule = container_of(fs_rule,
61 							      struct mlx5_ct_fs_dmfs_rule,
62 							      fs_rule);
63 
64 	mlx5_tc_rule_delete(netdev_priv(fs->netdev), dmfs_rule->rule, dmfs_rule->attr);
65 	kfree(dmfs_rule);
66 }
67 
68 static struct mlx5_ct_fs_ops dmfs_ops = {
69 	.ct_rule_add = mlx5_ct_fs_dmfs_ct_rule_add,
70 	.ct_rule_del = mlx5_ct_fs_dmfs_ct_rule_del,
71 
72 	.init = mlx5_ct_fs_dmfs_init,
73 	.destroy = mlx5_ct_fs_dmfs_destroy,
74 };
75 
mlx5_ct_fs_dmfs_ops_get(void)76 struct mlx5_ct_fs_ops *mlx5_ct_fs_dmfs_ops_get(void)
77 {
78 	return &dmfs_ops;
79 }
80