From: Geliang Tang <tanggeliang@kylinos.cn>

The first parameter "skb" in mptcp_userspace_pm_get_addr() is only used
to obtained the network namespace, which can also be obtained through the
second parameter "info" by using genl_info_net() helper. This patch drop
these useless parameters "skb" in all three get_addr() interfaces.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 net/mptcp/pm_netlink.c   | 10 +++++-----
 net/mptcp/pm_userspace.c |  5 ++---
 net/mptcp/protocol.h     |  3 +--
 3 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index d7a4199b142e..f02378e9a9c8 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -1790,7 +1790,7 @@ int mptcp_nl_fill_addr(struct sk_buff *skb,
 	return -EMSGSIZE;
 }
 
-static int mptcp_pm_nl_get_addr(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_nl_get_addr(struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct pm_nl_pernet *pernet = genl_info_pm_nl(info);
@@ -1840,16 +1840,16 @@ static int mptcp_pm_nl_get_addr(struct sk_buff *skb, struct genl_info *info)
 	return ret;
 }
 
-static int mptcp_pm_get_addr(struct sk_buff *skb, struct genl_info *info)
+static int mptcp_pm_get_addr(struct genl_info *info)
 {
 	if (info->attrs[MPTCP_PM_ATTR_TOKEN])
-		return mptcp_userspace_pm_get_addr(skb, info);
-	return mptcp_pm_nl_get_addr(skb, info);
+		return mptcp_userspace_pm_get_addr(info);
+	return mptcp_pm_nl_get_addr(info);
 }
 
 int mptcp_pm_nl_get_addr_doit(struct sk_buff *skb, struct genl_info *info)
 {
-	return mptcp_pm_get_addr(skb, info);
+	return mptcp_pm_get_addr(info);
 }
 
 static int mptcp_pm_nl_dump_addr(struct sk_buff *msg,
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index ff82ae39d5cf..afff0ab3d5e9 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -668,13 +668,12 @@ int mptcp_userspace_pm_dump_addr(struct sk_buff *msg,
 	return ret;
 }
 
-int mptcp_userspace_pm_get_addr(struct sk_buff *skb,
-				struct genl_info *info)
+int mptcp_userspace_pm_get_addr(struct genl_info *info)
 {
 	struct nlattr *attr = info->attrs[MPTCP_PM_ENDPOINT_ADDR];
 	struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN];
 	struct mptcp_pm_addr_entry addr, *entry;
-	struct net *net = sock_net(skb->sk);
+	struct net *net = genl_info_net(info);
 	struct mptcp_sock *msk;
 	struct sk_buff *msg;
 	int ret = -EINVAL;
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 95533d5b82c4..238fb2ddb68a 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -1127,8 +1127,7 @@ bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
 bool mptcp_userspace_pm_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
 int mptcp_userspace_pm_dump_addr(struct sk_buff *msg,
 				 struct netlink_callback *cb);
-int mptcp_userspace_pm_get_addr(struct sk_buff *skb,
-				struct genl_info *info);
+int mptcp_userspace_pm_get_addr(struct genl_info *info);
 
 static inline u8 subflow_get_local_id(const struct mptcp_subflow_context *subflow)
 {
-- 
2.43.0