Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 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 | { |
Saeed Mahameed | c4f287c | 2016-07-19 20:17:12 +0300 | [diff] [blame] | 49 | u32 in[MLX5_ST_SZ_DW(add_vxlan_udp_dport_in)] = {0}; |
| 50 | u32 out[MLX5_ST_SZ_DW(add_vxlan_udp_dport_out)] = {0}; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 51 | |
| 52 | MLX5_SET(add_vxlan_udp_dport_in, in, opcode, |
| 53 | MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT); |
| 54 | MLX5_SET(add_vxlan_udp_dport_in, in, vxlan_udp_port, port); |
Saeed Mahameed | c4f287c | 2016-07-19 20:17:12 +0300 | [diff] [blame] | 55 | return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | static int mlx5e_vxlan_core_del_port_cmd(struct mlx5_core_dev *mdev, u16 port) |
| 59 | { |
Saeed Mahameed | c4f287c | 2016-07-19 20:17:12 +0300 | [diff] [blame] | 60 | u32 in[MLX5_ST_SZ_DW(delete_vxlan_udp_dport_in)] = {0}; |
| 61 | u32 out[MLX5_ST_SZ_DW(delete_vxlan_udp_dport_out)] = {0}; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 62 | |
| 63 | MLX5_SET(delete_vxlan_udp_dport_in, in, opcode, |
| 64 | MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT); |
| 65 | MLX5_SET(delete_vxlan_udp_dport_in, in, vxlan_udp_port, port); |
Saeed Mahameed | c4f287c | 2016-07-19 20:17:12 +0300 | [diff] [blame] | 66 | return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | struct mlx5e_vxlan *mlx5e_vxlan_lookup_port(struct mlx5e_priv *priv, u16 port) |
| 70 | { |
| 71 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; |
| 72 | struct mlx5e_vxlan *vxlan; |
| 73 | |
| 74 | spin_lock(&vxlan_db->lock); |
| 75 | vxlan = radix_tree_lookup(&vxlan_db->tree, port); |
| 76 | spin_unlock(&vxlan_db->lock); |
| 77 | |
| 78 | return vxlan; |
| 79 | } |
| 80 | |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 81 | static void mlx5e_vxlan_add_port(struct work_struct *work) |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 82 | { |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 83 | struct mlx5e_vxlan_work *vxlan_work = |
| 84 | container_of(work, struct mlx5e_vxlan_work, work); |
| 85 | struct mlx5e_priv *priv = vxlan_work->priv; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 86 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 87 | u16 port = vxlan_work->port; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 88 | struct mlx5e_vxlan *vxlan; |
| 89 | int err; |
| 90 | |
Matthew Finlay | 9ceec35 | 2016-06-27 12:08:36 +0300 | [diff] [blame] | 91 | if (mlx5e_vxlan_lookup_port(priv, port)) |
| 92 | goto free_work; |
| 93 | |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 94 | if (mlx5e_vxlan_core_add_port_cmd(priv->mdev, port)) |
| 95 | goto free_work; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 96 | |
| 97 | vxlan = kzalloc(sizeof(*vxlan), GFP_KERNEL); |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 98 | if (!vxlan) |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 99 | goto err_delete_port; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 100 | |
| 101 | vxlan->udp_port = port; |
| 102 | |
| 103 | spin_lock_irq(&vxlan_db->lock); |
| 104 | err = radix_tree_insert(&vxlan_db->tree, vxlan->udp_port, vxlan); |
| 105 | spin_unlock_irq(&vxlan_db->lock); |
| 106 | if (err) |
| 107 | goto err_free; |
| 108 | |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 109 | goto free_work; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 110 | |
| 111 | err_free: |
| 112 | kfree(vxlan); |
| 113 | err_delete_port: |
| 114 | mlx5e_vxlan_core_del_port_cmd(priv->mdev, port); |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 115 | free_work: |
| 116 | kfree(vxlan_work); |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | static void __mlx5e_vxlan_core_del_port(struct mlx5e_priv *priv, u16 port) |
| 120 | { |
| 121 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; |
| 122 | struct mlx5e_vxlan *vxlan; |
| 123 | |
| 124 | spin_lock_irq(&vxlan_db->lock); |
| 125 | vxlan = radix_tree_delete(&vxlan_db->tree, port); |
| 126 | spin_unlock_irq(&vxlan_db->lock); |
| 127 | |
| 128 | if (!vxlan) |
| 129 | return; |
| 130 | |
| 131 | mlx5e_vxlan_core_del_port_cmd(priv->mdev, vxlan->udp_port); |
| 132 | |
| 133 | kfree(vxlan); |
| 134 | } |
| 135 | |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 136 | static void mlx5e_vxlan_del_port(struct work_struct *work) |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 137 | { |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 138 | struct mlx5e_vxlan_work *vxlan_work = |
| 139 | container_of(work, struct mlx5e_vxlan_work, work); |
| 140 | struct mlx5e_priv *priv = vxlan_work->priv; |
| 141 | u16 port = vxlan_work->port; |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 142 | |
| 143 | __mlx5e_vxlan_core_del_port(priv, port); |
Matthew Finlay | d8cf2dd | 2016-05-01 22:59:57 +0300 | [diff] [blame] | 144 | |
| 145 | kfree(vxlan_work); |
| 146 | } |
| 147 | |
| 148 | void mlx5e_vxlan_queue_work(struct mlx5e_priv *priv, sa_family_t sa_family, |
| 149 | u16 port, int add) |
| 150 | { |
| 151 | struct mlx5e_vxlan_work *vxlan_work; |
| 152 | |
| 153 | vxlan_work = kmalloc(sizeof(*vxlan_work), GFP_ATOMIC); |
| 154 | if (!vxlan_work) |
| 155 | return; |
| 156 | |
| 157 | if (add) |
| 158 | INIT_WORK(&vxlan_work->work, mlx5e_vxlan_add_port); |
| 159 | else |
| 160 | INIT_WORK(&vxlan_work->work, mlx5e_vxlan_del_port); |
| 161 | |
| 162 | vxlan_work->priv = priv; |
| 163 | vxlan_work->port = port; |
| 164 | vxlan_work->sa_family = sa_family; |
| 165 | queue_work(priv->wq, &vxlan_work->work); |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | void mlx5e_vxlan_cleanup(struct mlx5e_priv *priv) |
| 169 | { |
| 170 | struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; |
| 171 | struct mlx5e_vxlan *vxlan; |
| 172 | unsigned int port = 0; |
| 173 | |
| 174 | spin_lock_irq(&vxlan_db->lock); |
| 175 | while (radix_tree_gang_lookup(&vxlan_db->tree, (void **)&vxlan, port, 1)) { |
| 176 | port = vxlan->udp_port; |
| 177 | spin_unlock_irq(&vxlan_db->lock); |
| 178 | __mlx5e_vxlan_core_del_port(priv, (u16)port); |
| 179 | spin_lock_irq(&vxlan_db->lock); |
| 180 | } |
| 181 | spin_unlock_irq(&vxlan_db->lock); |
| 182 | } |