[OLK-5.10] 添加bond驱动vendor hook

添加bond驱动vendor hook点vendor_bond_check_dev_link，产品基于hook实现自己的fix逻辑，避免侵入式修改。

使用方式如下：

#include <trace/hooks/bonding.h>

static void vendor_foo(void *data, const struct bonding *bond,
                       const struct slave *slave, int *state)
{
        pr_info("%s\n", __func__);                                                                                                                                                                                                                                                                              
}

static int __init vendor_bond_init(void)
{
      return register_trace_vendor_bond_check_dev_link(&vendor_foo, NULL);
}

static void __exit vendor_bond_exit(void)
{
        unregister_trace_vendor_bond_check_dev_link(&vendor_foo, NULL);
}

module_init(vendor_bond_init);
module_exit(vendor_bond_exit);

vendor_foo函数实现自己的逻辑

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测试模块代码如下：

#include <linux/kernel.h>                                                                                                                                                                                                                                                                                         
#include <linux/module.h>
#include <net/bonding.h>
#include <trace/hooks/bonding.h>

static void vendor_bond_check_dev_link(void *data, const struct bonding *bond,
                                       const struct slave *slave, int *state)
{
        pr_info("%s\n", __func__);
}

static int __init bondingTestInit(void)
{
        return register_trace_vendor_bond_check_dev_link(
                        &vendor_bond_check_dev_link, NULL);
}

static void __exit bondingTestExit(void)
{
        printk("bonding test exit\n");
        unregister_trace_vendor_bond_check_dev_link(&vendor_bond_check_dev_link, NULL);
}

/* 模块入口和出口函数 */
module_init(bondingTestInit)
module_exit(bondingTestExit)

/* 模块信息 */
MODULE_AUTHOR("Wei Yongjun <weiyongjun1@huawei.com>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("bondtest driver");

测试步骤：

modprobe bonding mode=0 miimon=100 max_bonds=2
ip link set eth0 down
echo +eth0 > /sys/class/net/bond0/bonding/slaves
ip link set eth0 up
ip link set bond0 up
modprobe bond_vendor

正常输出：
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[OLK-5.10] 添加bond驱动vendor hook

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