mptcp: add struct mptcp_pm_add_entry

Add a new struct mptcp_pm_add_entry to describe add_addr's entry.
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mptcp/pm_netlink.c

@@ -28,6 +28,11 @@ struct mptcp_pm_addr_entry {
 	struct rcu_head		rcu;
 };
 
+struct mptcp_pm_add_entry {
+	struct list_head	list;
+	struct mptcp_addr_info	addr;
+};
+
 struct pm_nl_pernet {
 	/* protects pernet updates */
 	spinlock_t		lock;
@@ -181,7 +186,7 @@ static void check_work_pending(struct mptcp_sock *msk)
 static bool lookup_anno_list_by_saddr(struct mptcp_sock *msk,
 				      struct mptcp_addr_info *addr)
 {
-	struct mptcp_pm_addr_entry *entry;
+	struct mptcp_pm_add_entry *entry;
 
 	list_for_each_entry(entry, &msk->pm.anno_list, list) {
 		if (addresses_equal(&entry->addr, addr, false))
@@ -194,23 +199,23 @@ static bool lookup_anno_list_by_saddr(struct mptcp_sock *msk,
 static bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
 				     struct mptcp_pm_addr_entry *entry)
 {
-	struct mptcp_pm_addr_entry *clone = NULL;
+	struct mptcp_pm_add_entry *add_entry = NULL;
 
 	if (lookup_anno_list_by_saddr(msk, &entry->addr))
 		return false;
 
-	clone = kmemdup(entry, sizeof(*entry), GFP_ATOMIC);
-	if (!clone)
+	add_entry = kmalloc(sizeof(*add_entry), GFP_ATOMIC);
+	if (!add_entry)
 		return false;
 
-	list_add(&clone->list, &msk->pm.anno_list);
+	list_add(&add_entry->list, &msk->pm.anno_list);
 
 	return true;
 }
 
 void mptcp_pm_free_anno_list(struct mptcp_sock *msk)
 {
-	struct mptcp_pm_addr_entry *entry, *tmp;
+	struct mptcp_pm_add_entry *entry, *tmp;
 
 	pr_debug("msk=%p", msk);
 
@@ -654,7 +659,7 @@ __lookup_addr_by_id(struct pm_nl_pernet *pernet, unsigned int id)
 static bool remove_anno_list_by_saddr(struct mptcp_sock *msk,
 				      struct mptcp_addr_info *addr)
 {
-	struct mptcp_pm_addr_entry *entry, *tmp;
+	struct mptcp_pm_add_entry *entry, *tmp;
 
 	list_for_each_entry_safe(entry, tmp, &msk->pm.anno_list, list) {
 		if (addresses_equal(&entry->addr, addr, false)) {