net/mlx5e: Vxlan, move vxlan logic to core driver

Move vxlan logic and objects to mlx5 core dirver.
Since it going to be used from different mlx5 interfaces.
e.g. mlx5e PF NIC netdev and mlx5e E-Switch representors.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>

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);
-}