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path: root/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/vxlan.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/vxlan.c230
1 files changed, 0 insertions, 230 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c b/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c
deleted file mode 100644
index 9a8fd762167b..000000000000
--- a/drivers/net/ethernet/mellanox/mlx5/core/vxlan.c
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * Copyright (c) 2016, Mellanox Technologies, Ltd. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mlx5/driver.h>
-#include "mlx5_core.h"
-#include "vxlan.h"
-
-struct mlx5_vxlan {
- struct mlx5_core_dev *mdev;
- spinlock_t lock; /* protect vxlan table */
- /* max_num_ports is usuallly 4, 16 buckets is more than enough */
- DECLARE_HASHTABLE(htable, 4);
- int num_ports;
- struct mutex sync_lock; /* sync add/del port HW operations */
-};
-
-struct mlx5_vxlan_port {
- struct hlist_node hlist;
- atomic_t refcount;
- u16 udp_port;
-};
-
-static inline u8 mlx5_vxlan_max_udp_ports(struct mlx5_core_dev *mdev)
-{
- return MLX5_CAP_ETH(mdev, max_vxlan_udp_ports) ?: 4;
-}
-
-static int mlx5_vxlan_core_add_port_cmd(struct mlx5_core_dev *mdev, u16 port)
-{
- u32 in[MLX5_ST_SZ_DW(add_vxlan_udp_dport_in)] = {0};
- u32 out[MLX5_ST_SZ_DW(add_vxlan_udp_dport_out)] = {0};
-
- MLX5_SET(add_vxlan_udp_dport_in, in, opcode,
- MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT);
- MLX5_SET(add_vxlan_udp_dport_in, in, vxlan_udp_port, port);
- return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
-}
-
-static int mlx5_vxlan_core_del_port_cmd(struct mlx5_core_dev *mdev, u16 port)
-{
- u32 in[MLX5_ST_SZ_DW(delete_vxlan_udp_dport_in)] = {0};
- u32 out[MLX5_ST_SZ_DW(delete_vxlan_udp_dport_out)] = {0};
-
- MLX5_SET(delete_vxlan_udp_dport_in, in, opcode,
- MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT);
- MLX5_SET(delete_vxlan_udp_dport_in, in, vxlan_udp_port, port);
- return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
-}
-
-static struct mlx5_vxlan_port*
-mlx5_vxlan_lookup_port_locked(struct mlx5_vxlan *vxlan, u16 port)
-{
- struct mlx5_vxlan_port *vxlanp;
-
- hash_for_each_possible(vxlan->htable, vxlanp, hlist, port) {
- if (vxlanp->udp_port == port)
- return vxlanp;
- }
-
- return NULL;
-}
-
-struct mlx5_vxlan_port *mlx5_vxlan_lookup_port(struct mlx5_vxlan *vxlan, u16 port)
-{
- struct mlx5_vxlan_port *vxlanp;
-
- if (!mlx5_vxlan_allowed(vxlan))
- return NULL;
-
- spin_lock_bh(&vxlan->lock);
- vxlanp = mlx5_vxlan_lookup_port_locked(vxlan, port);
- spin_unlock_bh(&vxlan->lock);
-
- return vxlanp;
-}
-
-int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port)
-{
- struct mlx5_vxlan_port *vxlanp;
- int ret = -ENOSPC;
-
- vxlanp = mlx5_vxlan_lookup_port(vxlan, port);
- if (vxlanp) {
- atomic_inc(&vxlanp->refcount);
- return 0;
- }
-
- mutex_lock(&vxlan->sync_lock);
- if (vxlan->num_ports >= mlx5_vxlan_max_udp_ports(vxlan->mdev)) {
- mlx5_core_info(vxlan->mdev,
- "UDP port (%d) not offloaded, max number of UDP ports (%d) are already offloaded\n",
- port, mlx5_vxlan_max_udp_ports(vxlan->mdev));
- ret = -ENOSPC;
- goto unlock;
- }
-
- ret = mlx5_vxlan_core_add_port_cmd(vxlan->mdev, port);
- if (ret)
- goto unlock;
-
- vxlanp = kzalloc(sizeof(*vxlanp), GFP_KERNEL);
- if (!vxlanp) {
- ret = -ENOMEM;
- goto err_delete_port;
- }
-
- vxlanp->udp_port = port;
- atomic_set(&vxlanp->refcount, 1);
-
- spin_lock_bh(&vxlan->lock);
- hash_add(vxlan->htable, &vxlanp->hlist, port);
- spin_unlock_bh(&vxlan->lock);
-
- vxlan->num_ports++;
- mutex_unlock(&vxlan->sync_lock);
- return 0;
-
-err_delete_port:
- mlx5_vxlan_core_del_port_cmd(vxlan->mdev, port);
-
-unlock:
- mutex_unlock(&vxlan->sync_lock);
- return ret;
-}
-
-int mlx5_vxlan_del_port(struct mlx5_vxlan *vxlan, u16 port)
-{
- struct mlx5_vxlan_port *vxlanp;
- bool remove = false;
- int ret = 0;
-
- mutex_lock(&vxlan->sync_lock);
-
- spin_lock_bh(&vxlan->lock);
- vxlanp = mlx5_vxlan_lookup_port_locked(vxlan, port);
- if (!vxlanp) {
- ret = -ENOENT;
- goto out_unlock;
- }
-
- if (atomic_dec_and_test(&vxlanp->refcount)) {
- hash_del(&vxlanp->hlist);
- remove = true;
- }
-
-out_unlock:
- spin_unlock_bh(&vxlan->lock);
-
- if (remove) {
- mlx5_vxlan_core_del_port_cmd(vxlan->mdev, port);
- kfree(vxlanp);
- vxlan->num_ports--;
- }
-
- mutex_unlock(&vxlan->sync_lock);
-
- return ret;
-}
-
-struct mlx5_vxlan *mlx5_vxlan_create(struct mlx5_core_dev *mdev)
-{
- struct mlx5_vxlan *vxlan;
-
- if (!MLX5_CAP_ETH(mdev, tunnel_stateless_vxlan) || !mlx5_core_is_pf(mdev))
- return ERR_PTR(-ENOTSUPP);
-
- vxlan = kzalloc(sizeof(*vxlan), GFP_KERNEL);
- if (!vxlan)
- return ERR_PTR(-ENOMEM);
-
- vxlan->mdev = mdev;
- mutex_init(&vxlan->sync_lock);
- spin_lock_init(&vxlan->lock);
- hash_init(vxlan->htable);
-
- /* Hardware adds 4789 by default */
- mlx5_vxlan_add_port(vxlan, 4789);
-
- return vxlan;
-}
-
-void mlx5_vxlan_destroy(struct mlx5_vxlan *vxlan)
-{
- struct mlx5_vxlan_port *vxlanp;
- struct hlist_node *tmp;
- int bkt;
-
- if (!mlx5_vxlan_allowed(vxlan))
- return;
-
- /* Lockless since we are the only hash table consumers*/
- hash_for_each_safe(vxlan->htable, bkt, tmp, vxlanp, hlist) {
- hash_del(&vxlanp->hlist);
- mlx5_vxlan_core_del_port_cmd(vxlan->mdev, vxlanp->udp_port);
- kfree(vxlanp);
- }
-
- kfree(vxlan);
-}
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