Commit b88ceab5 authored by Wei Yongjun's avatar Wei Yongjun Committed by Zheng Zengkai
Browse files

drivers: hooks: add bonding driver vendor hooks 

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4UV43


CVE: NA

---------------------------

Allow vendor modules to attach bonding driver hooks. This
patch introduce vendor_bond_check_dev_link hook.

Usage:

  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);

Signed-off-by: default avatarWei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: default avatarZhang Jialin <zhangjialin11@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 79246e86

arch/arm64/configs/openeuler_defconfig

+1 −0
Original line number Diff line number Diff line
@@ -6090,6 +6090,7 @@ CONFIG_USB4=m 
# Vendor Hooks

#

CONFIG_VENDOR_HOOKS=y

CONFIG_VENDOR_BOND_HOOKS=y

# end of Vendor Hooks



CONFIG_LIBNVDIMM=m

arch/x86/configs/openeuler_defconfig

+1 −0
Original line number Diff line number Diff line
@@ -7183,6 +7183,7 @@ CONFIG_USB4=m 
# Vendor Hooks

#

CONFIG_VENDOR_HOOKS=y

CONFIG_VENDOR_BOND_HOOKS=y

# end of Vendor Hooks



CONFIG_LIBNVDIMM=m

drivers/hooks/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -10,4 +10,14 @@ config VENDOR_HOOKS 
          Allow vendor modules to attach to tracepoint "hooks" defined via

          DECLARE_HOOK or DECLARE_RESTRICTED_HOOK.



config VENDOR_BOND_HOOKS

        bool "Ethernet Bonding driver Vendor Hooks"

        depends on VENDOR_HOOKS && BONDING

        default n

        help

	  Enable ethernet bonding driver vendor hooks



          Allow vendor modules to attach bonding driver hooks defined via

          DECLARE_HOOK or DECLARE_RESTRICTED_HOOK.



endmenu

drivers/hooks/vendor_hooks.c

+4 −0
Original line number Diff line number Diff line
@@ -8,9 +8,13 @@ 


#define CREATE_TRACE_POINTS

#include <trace/hooks/vendor_hooks.h>

#include <trace/hooks/bonding.h>



/*

 * Export tracepoints that act as a bare tracehook (ie: have no trace event

 * associated with them) to allow external modules to probe them.

 */



#ifdef CONFIG_VENDOR_BOND_HOOKS

EXPORT_TRACEPOINT_SYMBOL_GPL(vendor_bond_check_dev_link);

#endif

drivers/net/bonding/bond_main.c

+5 −0
Original line number Diff line number Diff line
@@ -83,6 +83,7 @@ 
#include <net/bonding.h>

#include <net/bond_3ad.h>

#include <net/bond_alb.h>

#include <trace/hooks/bonding.h>



#include "bonding_priv.h"
@@ -2415,6 +2416,10 @@ static int bond_miimon_inspect(struct bonding *bond) 


		link_state = bond_check_dev_link(bond, slave->dev, 0);



#ifdef CONFIG_VENDOR_BOND_HOOKS

		trace_vendor_bond_check_dev_link(bond, slave, &link_state);

#endif



		switch (slave->link) {

		case BOND_LINK_UP:

			if (link_state)