kabi: net: reserve space for net can subsystem related structure

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4HE7P?from=project-issue
CVE: NA

--------

Reserve some fields beforehand for net can framework related structures prone
to change.

---------
Signed-off-by: NWang Hai <wanghai38@huawei.com>
Reviewed-by: NWei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: NYue Haibing <yuehaibing@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

include/linux/can/core.h

@@ -17,6 +17,7 @@
 #include <linux/can.h>
 #include <linux/skbuff.h>
 #include <linux/netdevice.h>
+#include <linux/kabi.h>
 
 #define DNAME(dev) ((dev) ? (dev)->name : "any")
 
@@ -32,6 +33,9 @@ struct can_proto {
 	int protocol;
 	const struct proto_ops *ops;
 	struct proto *prot;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 /* required_size

include/linux/can/dev.h

@@ -20,6 +20,7 @@
 #include <linux/can/netlink.h>
 #include <linux/can/skb.h>
 #include <linux/netdevice.h>
+#include <linux/kabi.h>
 
 /*
  * CAN mode
@@ -80,6 +81,11 @@ struct can_priv {
 	struct led_trigger *rxtx_led_trig;
 	char rxtx_led_trig_name[CAN_LED_NAME_SZ];
 #endif
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 #define CAN_SYNC_SEG 1

include/linux/can/rx-offload.h

@@ -11,6 +11,7 @@
 
 #include <linux/netdevice.h>
 #include <linux/can.h>
+#include <linux/kabi.h>
 
 struct can_rx_offload {
 	struct net_device *dev;
@@ -28,6 +29,9 @@ struct can_rx_offload {
 	struct napi_struct napi;
 
 	bool inc;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 int can_rx_offload_add_timestamp(struct net_device *dev,

include/linux/can/skb.h

@@ -34,6 +34,7 @@
 struct can_skb_priv {
 	int ifindex;
 	int skbcnt;
+
 	struct can_frame cf[];
 };
 

include/net/netns/can.h

@@ -7,6 +7,7 @@
 #define __NETNS_CAN_H__
 
 #include <linux/spinlock.h>
+#include <linux/kabi.h>
 
 struct can_dev_rcv_lists;
 struct can_pkg_stats;
@@ -35,6 +36,8 @@ struct netns_can {
 
 	/* CAN GW per-net gateway jobs */
 	struct hlist_head cgw_list;
+
+	KABI_RESERVE(1)
 };
 
 #endif /* __NETNS_CAN_H__ */