cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/mellanox/mlx5/core/vxlan.c

/*
 * 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"


void mlx5e_vxlan_init(struct mlx5e_priv *priv) { struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; spin_lock_init(&vxlan_db->lock); INIT_RADIX_TREE(&vxlan_db->tree, GFP_ATOMIC); }

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Matthew Finlay38100.00%1100.00%
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static int mlx5e_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)); }

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Matthew Finlay7389.02%150.00%
Saeed Mahameed910.98%150.00%
Total82100.00%2100.00%


static int mlx5e_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)); }

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Matthew Finlay7389.02%150.00%
Saeed Mahameed910.98%150.00%
Total82100.00%2100.00%


struct mlx5e_vxlan *mlx5e_vxlan_lookup_port(struct mlx5e_priv *priv, u16 port) { struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; struct mlx5e_vxlan *vxlan; spin_lock(&vxlan_db->lock); vxlan = radix_tree_lookup(&vxlan_db->tree, port); spin_unlock(&vxlan_db->lock); return vxlan; }

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Matthew Finlay61100.00%1100.00%
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static void mlx5e_vxlan_add_port(struct work_struct *work) { struct mlx5e_vxlan_work *vxlan_work = container_of(work, struct mlx5e_vxlan_work, work); struct mlx5e_priv *priv = vxlan_work->priv; struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; u16 port = vxlan_work->port; struct mlx5e_vxlan *vxlan; int err; if (mlx5e_vxlan_lookup_port(priv, port)) goto free_work; if (mlx5e_vxlan_core_add_port_cmd(priv->mdev, port)) goto free_work; vxlan = kzalloc(sizeof(*vxlan), GFP_KERNEL); if (!vxlan) goto err_delete_port; vxlan->udp_port = port; spin_lock_irq(&vxlan_db->lock); err = radix_tree_insert(&vxlan_db->tree, vxlan->udp_port, vxlan); spin_unlock_irq(&vxlan_db->lock); if (err) goto err_free; goto free_work; err_free: kfree(vxlan); err_delete_port: mlx5e_vxlan_core_del_port_cmd(priv->mdev, port); free_work: kfree(vxlan_work); }

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Matthew Finlay180100.00%3100.00%
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static void __mlx5e_vxlan_core_del_port(struct mlx5e_priv *priv, u16 port) { struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; struct mlx5e_vxlan *vxlan; spin_lock_irq(&vxlan_db->lock); vxlan = radix_tree_delete(&vxlan_db->tree, port); spin_unlock_irq(&vxlan_db->lock); if (!vxlan) return; mlx5e_vxlan_core_del_port_cmd(priv->mdev, vxlan->udp_port); kfree(vxlan); }

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Matthew Finlay79100.00%1100.00%
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static void mlx5e_vxlan_del_port(struct work_struct *work) { struct mlx5e_vxlan_work *vxlan_work = container_of(work, struct mlx5e_vxlan_work, work); struct mlx5e_priv *priv = vxlan_work->priv; u16 port = vxlan_work->port; __mlx5e_vxlan_core_del_port(priv, port); kfree(vxlan_work); }

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Matthew Finlay54100.00%2100.00%
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void mlx5e_vxlan_queue_work(struct mlx5e_priv *priv, sa_family_t sa_family, u16 port, int add) { struct mlx5e_vxlan_work *vxlan_work; vxlan_work = kmalloc(sizeof(*vxlan_work), GFP_ATOMIC); if (!vxlan_work) return; if (add) INIT_WORK(&vxlan_work->work, mlx5e_vxlan_add_port); else INIT_WORK(&vxlan_work->work, mlx5e_vxlan_del_port); vxlan_work->priv = priv; vxlan_work->port = port; vxlan_work->sa_family = sa_family; queue_work(priv->wq, &vxlan_work->work); }

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Matthew Finlay98100.00%2100.00%
Total98100.00%2100.00%


void mlx5e_vxlan_cleanup(struct mlx5e_priv *priv) { struct mlx5e_vxlan_db *vxlan_db = &priv->vxlan; struct mlx5e_vxlan *vxlan; unsigned int port = 0; spin_lock_irq(&vxlan_db->lock); while (radix_tree_gang_lookup(&vxlan_db->tree, (void **)&vxlan, port, 1)) { port = vxlan->udp_port; spin_unlock_irq(&vxlan_db->lock); __mlx5e_vxlan_core_del_port(priv, (u16)port); spin_lock_irq(&vxlan_db->lock); } spin_unlock_irq(&vxlan_db->lock); }

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Matthew Finlay103100.00%1100.00%
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Matthew Finlay77597.73%375.00%
Saeed Mahameed182.27%125.00%
Total793100.00%4100.00%
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