1 files changed, 37 insertions, 4 deletions

diff --git a/sys/compat/linuxkpi/common/include/linux/rculist.h b/sys/compat/linuxkpi/common/include/linux/rculist.h
index 0a4ad499c3807..bff2f7e131844 100644
--- a/sys/compat/linuxkpi/common/include/linux/rculist.h
+++ b/sys/compat/linuxkpi/common/include/linux/rculist.h
@@ -1,6 +1,6 @@
 /*-
  * Copyright (c) 2015 François Tigeot
- * Copyright (c) 2016-2017 Mellanox Technologies, Ltd.
+ * Copyright (c) 2016-2020 Mellanox Technologies, Ltd.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -37,6 +37,7 @@
 	container_of(READ_ONCE(ptr), type, member)
 
 #define	list_next_rcu(head)	(*((struct list_head **)(&(head)->next)))
+#define	list_prev_rcu(head)	(*((struct list_head **)(&(head)->prev)))
 
 #define	list_for_each_entry_rcu(pos, head, member) \
 	for (pos = list_entry_rcu((head)->next, typeof(*(pos)), member); \
@@ -44,12 +45,44 @@
 	     pos = list_entry_rcu((pos)->member.next, typeof(*(pos)), member))
 
 static inline void
-list_add_rcu(struct list_head *new, struct list_head *prev)
+linux_list_add_rcu(struct list_head *new, struct list_head *prev,
+    struct list_head *next)
 {
-	new->next = prev->next;
+	new->next = next;
 	new->prev = prev;
 	rcu_assign_pointer(list_next_rcu(prev), new);
-	prev->prev = new;
+	next->prev = new;
+}
+
+static inline void
+list_add_rcu(struct list_head *new, struct list_head *head)
+{
+	linux_list_add_rcu(new, head, head->next);
+}
+
+static inline void
+list_add_tail_rcu(struct list_head *new, struct list_head *head)
+{
+	linux_list_add_rcu(new, head->prev, head);
+}
+
+static inline void
+__list_del_rcu(struct list_head *prev, struct list_head *next)
+{
+	next->prev = prev;
+	rcu_assign_pointer(list_next_rcu(prev), next);
+}
+
+static inline void
+__list_del_entry_rcu(struct list_head *entry)
+{
+	__list_del_rcu(entry->prev, entry->next);
+}
+
+static inline void
+list_del_rcu(struct list_head *entry)
+{
+	__list_del_rcu(entry->prev, entry->next);
 }
 
 #define	hlist_first_rcu(head)	(*((struct hlist_node **)(&(head)->first)))