KABI: Add KABI_AUX_PTR extenstions to some more base structures

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4JBL0
CVE: NA

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

Add KABI_AUX_PTR extenstions to the following base structures
before KABI freeze:

struct device_driver
struct class
struct device
struct hrtimer
struct ipmi_smi_handlers
struct net_device
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

include/linux/device.h

@@ -370,6 +370,12 @@ struct dev_links_info {
 	enum dl_dev_state status;
 };
 
+/**
+ * struct device_extended_resvd - KABI extension struct
+ */
+struct device_extended_resvd {
+};
+
 /**
  * struct device - The basic device structure
  * @parent:	The device's "parent" device, the device to which it is attached.
@@ -560,7 +566,7 @@ struct device {
 #ifdef CONFIG_DMA_OPS_BYPASS
 	bool			dma_ops_bypass : 1;
 #endif
-
+	/* Use device_extended after all RESERVE fields used */
 	KABI_RESERVE(1)
 	KABI_RESERVE(2)
 	KABI_RESERVE(3)
@@ -577,6 +583,7 @@ struct device {
 	KABI_RESERVE(14)
 	KABI_RESERVE(15)
 	KABI_RESERVE(16)
+	KABI_AUX_PTR(device_extended)
 };
 
 /**

include/linux/device/class.h

@@ -24,6 +24,12 @@
 struct device;
 struct fwnode_handle;
 
+/**
+ * struct class_resvd - KABI extension struct
+ */
+struct class_resvd {
+};
+
 /**
  * struct class - device classes
  * @name:	Name of the class.
@@ -82,6 +88,7 @@ struct class {
 	KABI_RESERVE(2)
 	KABI_RESERVE(3)
 	KABI_RESERVE(4)
+	KABI_AUX_PTR(class)
 };
 
 struct class_dev_iter {

include/linux/device/driver.h

@@ -48,6 +48,12 @@ enum probe_type {
 	PROBE_FORCE_SYNCHRONOUS,
 };
 
+/**
+ * struct device_driver_resvd - KABI extension struct
+ */
+struct device_driver_resvd {
+};
+
 /**
  * struct device_driver - The basic device driver structure
  * @name:	Name of the device driver.
@@ -124,6 +130,7 @@ struct device_driver {
 	KABI_RESERVE(2)
 	KABI_RESERVE(3)
 	KABI_RESERVE(4)
+	KABI_AUX_PTR(device_driver)
 };
 
 

include/linux/hrtimer.h

@@ -95,6 +95,12 @@ enum hrtimer_restart {
 #define HRTIMER_STATE_INACTIVE	0x00
 #define HRTIMER_STATE_ENQUEUED	0x01
 
+/**
+ * struct hrtimer_resvd - KABI extension struct
+ */
+struct hrtimer_resvd {
+};
+
 /**
  * struct hrtimer - the basic hrtimer structure
  * @node:	timerqueue node, which also manages node.expires,
@@ -128,6 +134,7 @@ struct hrtimer {
 
 	KABI_RESERVE(1)
 	KABI_RESERVE(2)
+	KABI_AUX_PTR(hrtimer)
 };
 
 /**

include/linux/ipmi_smi.h

@@ -70,6 +70,15 @@ struct ipmi_smi_msg {
 	void (*done)(struct ipmi_smi_msg *msg);
 };
 
+/**
+ * struct ipmi_smi_handlers_resvd - KABI extension struct
+ * This extension must be dynamically allocated for every instance of
+ * ipmi_smi_handlers, because ipmi_smi_handlers is embedded in another
+ * struct.
+ */
+struct ipmi_smi_handlers_resvd {
+};
+
 struct ipmi_smi_handlers {
 	struct module *owner;
 
@@ -153,6 +162,7 @@ struct ipmi_smi_handlers {
 	 * block.
 	 */
 	void (*set_maintenance_mode)(void *send_info, bool enable);
+	KABI_AUX_PTR(ipmi_smi_handlers)
 };
 
 struct ipmi_device_id {

include/linux/netdevice.h

@@ -1639,6 +1639,12 @@ enum netdev_ml_priv_type {
 	ML_PRIV_CAN,
 };
 
+/**
+ * struct net_device_extended_resvd - KABI extension struct
+ */
+struct net_device_extended_resvd {
+};
+
 /**
  *	struct net_device - The DEVICE structure.
  *
@@ -2215,6 +2221,7 @@ struct net_device {
 	KABI_RESERVE(6)
 	KABI_RESERVE(7)
 	KABI_RESERVE(8)
+	KABI_AUX_PTR(net_device_extended)
 };
 #define to_net_dev(d) container_of(d, struct net_device, dev)