kabi: net: reserve space for net bpf 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 bpf 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/skmsg.h

@@ -12,6 +12,7 @@
 #include <net/sock.h>
 #include <net/tcp.h>
 #include <net/strparser.h>
+#include <linux/kabi.h>
 
 #define MAX_MSG_FRAGS			MAX_SKB_FRAGS
 #define NR_MSG_FRAG_IDS			(MAX_MSG_FRAGS + 1)
@@ -58,6 +59,11 @@ struct sk_psock_progs {
 	struct bpf_prog			*msg_parser;
 	struct bpf_prog			*skb_parser;
 	struct bpf_prog			*skb_verdict;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 enum sk_psock_state_bits {
@@ -107,6 +113,11 @@ struct sk_psock {
 		struct rcu_head		rcu;
 		struct work_struct	gc;
 	};
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 int sk_msg_alloc(struct sock *sk, struct sk_msg *msg, int len,

include/net/tcp.h

@@ -45,6 +45,7 @@
 #include <linux/memcontrol.h>
 #include <linux/bpf-cgroup.h>
 #include <linux/siphash.h>
+#include <linux/kabi.h>
 
 extern struct inet_hashinfo tcp_hashinfo;
 
@@ -1084,6 +1085,11 @@ struct tcp_congestion_ops {
 
 	char 		name[TCP_CA_NAME_MAX];
 	struct module 	*owner;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 int tcp_register_congestion_control(struct tcp_congestion_ops *type);

include/net/xdp.h

@@ -7,6 +7,7 @@
 #define __LINUX_NET_XDP_H__
 
 #include <linux/skbuff.h> /* skb_shared_info */
+#include <linux/kabi.h>
 
 /**
  * DOC: XDP RX-queue information
@@ -59,6 +60,11 @@ struct xdp_rxq_info {
 	u32 queue_index;
 	u32 reg_state;
 	struct xdp_mem_info mem;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 } ____cacheline_aligned; /* perf critical, avoid false-sharing */
 
 struct xdp_txq_info {