net: netpoll: Fix kabi in netpoll_info by using KABI_BROKEN_REPLACE

deepin inclusion
category: kabi

When DEEPIN_KABI_RESERVE=y, struct net_device is kabi whitelist,
commit dc67d67a995e ("net: netpoll: Individualize the skb pool")
upstream introduce skb_pool in every struct netpoll which
"modify the netpoll system to assign a skb pool to each target instead of
using a global one."
and be backport to v6.6.117 stable version for it is Stable-dep-of
49c8d2c ("net: netpoll: fix incorrect refcount handling causing incorrect cleanup")

change struct netpoll { ... +struct sk_buff_head skb_pool; }
->change netpoll_info { ... struct netpoll *netpoll; }
->change net_device { struct netpoll_info *npinfo; }
->change some EXPORT_SYMBOL such as free_netdev etc ...
in our KABI whitelist.

The struct sk_buff_head { struct sk_buff	*next;
struct sk_buff	*prev; .. } is large than KABI reverse in the struct,
so cannot use KABI_USE in this situation.
For netpoll pointer after change is same as before and use internel.
We can use DEEPIN_KABI_BROKEN_REPLACE to fix it.

Fixes: ca946ee ("net: netpoll: Individualize the skb pool")
Signed-off-by: Wentao Guan <guanwentao@uniontech.com>

Author: opsiff

include/linux/netpoll.h

@@ -47,7 +47,23 @@ struct netpoll_info {
 
 	struct delayed_work tx_work;
 
-	struct netpoll *netpoll;
+	/* !!! Kernel Internal USE */
+	DEEPIN_KABI_BROKEN_REPLACE(
+        struct {
+                struct net_device *dev;
+                netdevice_tracker dev_tracker;
+                char dev_name[IFNAMSIZ];
+                const char *name;
+                union inet_addr local_ip;
+                union inet_addr remote_ip;
+                bool ipv6;
+                u16 local_port;
+                u16 remote_port;
+                u8 remote_mac[ETH_ALEN];
+                DEEPIN_KABI_RESERVE(1)
+                DEEPIN_KABI_RESERVE(2)
+        } *netpoll,
+        struct netpoll *netpoll)
 	struct rcu_head rcu;
 };