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b3f63c3d MF |
1 | /* |
2 | * Copyright (c) 2016, 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 | #include <linux/kernel.h> | |
34 | #include <linux/module.h> | |
35 | #include <linux/mlx5/driver.h> | |
36 | #include "mlx5_core.h" | |
37 | #include "vxlan.h" | |
38 | ||
39 | void mlx5e_vxlan_init(struct mlx5e_priv *priv) | |
40 | { | |
41 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; | |
42 | ||
43 | spin_lock_init(&vxlan_db->lock); | |
44 | INIT_RADIX_TREE(&vxlan_db->tree, GFP_ATOMIC); | |
45 | } | |
46 | ||
47 | static int mlx5e_vxlan_core_add_port_cmd(struct mlx5_core_dev *mdev, u16 port) | |
48 | { | |
49 | struct mlx5_outbox_hdr *hdr; | |
50 | int err; | |
51 | ||
52 | u32 in[MLX5_ST_SZ_DW(add_vxlan_udp_dport_in)]; | |
53 | u32 out[MLX5_ST_SZ_DW(add_vxlan_udp_dport_out)]; | |
54 | ||
55 | memset(in, 0, sizeof(in)); | |
56 | memset(out, 0, sizeof(out)); | |
57 | ||
58 | MLX5_SET(add_vxlan_udp_dport_in, in, opcode, | |
59 | MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT); | |
60 | MLX5_SET(add_vxlan_udp_dport_in, in, vxlan_udp_port, port); | |
61 | ||
62 | err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); | |
63 | if (err) | |
64 | return err; | |
65 | ||
66 | hdr = (struct mlx5_outbox_hdr *)out; | |
67 | return hdr->status ? -ENOMEM : 0; | |
68 | } | |
69 | ||
70 | static int mlx5e_vxlan_core_del_port_cmd(struct mlx5_core_dev *mdev, u16 port) | |
71 | { | |
72 | u32 in[MLX5_ST_SZ_DW(delete_vxlan_udp_dport_in)]; | |
73 | u32 out[MLX5_ST_SZ_DW(delete_vxlan_udp_dport_out)]; | |
74 | ||
75 | memset(&in, 0, sizeof(in)); | |
76 | memset(&out, 0, sizeof(out)); | |
77 | ||
78 | MLX5_SET(delete_vxlan_udp_dport_in, in, opcode, | |
79 | MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT); | |
80 | MLX5_SET(delete_vxlan_udp_dport_in, in, vxlan_udp_port, port); | |
81 | ||
82 | return mlx5_cmd_exec_check_status(mdev, in, sizeof(in), out, | |
83 | sizeof(out)); | |
84 | } | |
85 | ||
86 | struct mlx5e_vxlan *mlx5e_vxlan_lookup_port(struct mlx5e_priv *priv, u16 port) | |
87 | { | |
88 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; | |
89 | struct mlx5e_vxlan *vxlan; | |
90 | ||
91 | spin_lock(&vxlan_db->lock); | |
92 | vxlan = radix_tree_lookup(&vxlan_db->tree, port); | |
93 | spin_unlock(&vxlan_db->lock); | |
94 | ||
95 | return vxlan; | |
96 | } | |
97 | ||
d8cf2dda | 98 | static void mlx5e_vxlan_add_port(struct work_struct *work) |
b3f63c3d | 99 | { |
d8cf2dda MF |
100 | struct mlx5e_vxlan_work *vxlan_work = |
101 | container_of(work, struct mlx5e_vxlan_work, work); | |
102 | struct mlx5e_priv *priv = vxlan_work->priv; | |
b3f63c3d | 103 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; |
d8cf2dda | 104 | u16 port = vxlan_work->port; |
b3f63c3d MF |
105 | struct mlx5e_vxlan *vxlan; |
106 | int err; | |
107 | ||
9ceec359 MF |
108 | if (mlx5e_vxlan_lookup_port(priv, port)) |
109 | goto free_work; | |
110 | ||
d8cf2dda MF |
111 | if (mlx5e_vxlan_core_add_port_cmd(priv->mdev, port)) |
112 | goto free_work; | |
b3f63c3d MF |
113 | |
114 | vxlan = kzalloc(sizeof(*vxlan), GFP_KERNEL); | |
d8cf2dda | 115 | if (!vxlan) |
b3f63c3d | 116 | goto err_delete_port; |
b3f63c3d MF |
117 | |
118 | vxlan->udp_port = port; | |
119 | ||
120 | spin_lock_irq(&vxlan_db->lock); | |
121 | err = radix_tree_insert(&vxlan_db->tree, vxlan->udp_port, vxlan); | |
122 | spin_unlock_irq(&vxlan_db->lock); | |
123 | if (err) | |
124 | goto err_free; | |
125 | ||
d8cf2dda | 126 | goto free_work; |
b3f63c3d MF |
127 | |
128 | err_free: | |
129 | kfree(vxlan); | |
130 | err_delete_port: | |
131 | mlx5e_vxlan_core_del_port_cmd(priv->mdev, port); | |
d8cf2dda MF |
132 | free_work: |
133 | kfree(vxlan_work); | |
b3f63c3d MF |
134 | } |
135 | ||
136 | static void __mlx5e_vxlan_core_del_port(struct mlx5e_priv *priv, u16 port) | |
137 | { | |
138 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; | |
139 | struct mlx5e_vxlan *vxlan; | |
140 | ||
141 | spin_lock_irq(&vxlan_db->lock); | |
142 | vxlan = radix_tree_delete(&vxlan_db->tree, port); | |
143 | spin_unlock_irq(&vxlan_db->lock); | |
144 | ||
145 | if (!vxlan) | |
146 | return; | |
147 | ||
148 | mlx5e_vxlan_core_del_port_cmd(priv->mdev, vxlan->udp_port); | |
149 | ||
150 | kfree(vxlan); | |
151 | } | |
152 | ||
d8cf2dda | 153 | static void mlx5e_vxlan_del_port(struct work_struct *work) |
b3f63c3d | 154 | { |
d8cf2dda MF |
155 | struct mlx5e_vxlan_work *vxlan_work = |
156 | container_of(work, struct mlx5e_vxlan_work, work); | |
157 | struct mlx5e_priv *priv = vxlan_work->priv; | |
158 | u16 port = vxlan_work->port; | |
b3f63c3d MF |
159 | |
160 | __mlx5e_vxlan_core_del_port(priv, port); | |
d8cf2dda MF |
161 | |
162 | kfree(vxlan_work); | |
163 | } | |
164 | ||
165 | void mlx5e_vxlan_queue_work(struct mlx5e_priv *priv, sa_family_t sa_family, | |
166 | u16 port, int add) | |
167 | { | |
168 | struct mlx5e_vxlan_work *vxlan_work; | |
169 | ||
170 | vxlan_work = kmalloc(sizeof(*vxlan_work), GFP_ATOMIC); | |
171 | if (!vxlan_work) | |
172 | return; | |
173 | ||
174 | if (add) | |
175 | INIT_WORK(&vxlan_work->work, mlx5e_vxlan_add_port); | |
176 | else | |
177 | INIT_WORK(&vxlan_work->work, mlx5e_vxlan_del_port); | |
178 | ||
179 | vxlan_work->priv = priv; | |
180 | vxlan_work->port = port; | |
181 | vxlan_work->sa_family = sa_family; | |
182 | queue_work(priv->wq, &vxlan_work->work); | |
b3f63c3d MF |
183 | } |
184 | ||
185 | void mlx5e_vxlan_cleanup(struct mlx5e_priv *priv) | |
186 | { | |
187 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; | |
188 | struct mlx5e_vxlan *vxlan; | |
189 | unsigned int port = 0; | |
190 | ||
191 | spin_lock_irq(&vxlan_db->lock); | |
192 | while (radix_tree_gang_lookup(&vxlan_db->tree, (void **)&vxlan, port, 1)) { | |
193 | port = vxlan->udp_port; | |
194 | spin_unlock_irq(&vxlan_db->lock); | |
195 | __mlx5e_vxlan_core_del_port(priv, (u16)port); | |
196 | spin_lock_irq(&vxlan_db->lock); | |
197 | } | |
198 | spin_unlock_irq(&vxlan_db->lock); | |
199 | } |