netdev - [PATCH net-next 5/6] mptcp: remove MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR

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Date:   Mon, 23 Aug 2021 18:05:43 -0700
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Yonglong Li <liyonglong@...natelecom.cn>, davem@...emloft.net,
        kuba@...nel.org, matthieu.baerts@...sares.net,
        mptcp@...ts.linux.dev, Geliang Tang <geliangtang@...il.com>,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>
Subject: [PATCH net-next 5/6] mptcp: remove MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR_PORT

From: Yonglong Li <liyonglong@...natelecom.cn>

MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR_PORT are not necessary, we can get
these info from pm.local or pm.remote.

Drop mptcp_pm_should_add_signal_ipv6 and mptcp_pm_should_add_signal_port
too.

Co-developed-by: Geliang Tang <geliangtang@...il.com>
Signed-off-by: Geliang Tang <geliangtang@...il.com>
Signed-off-by: Yonglong Li <liyonglong@...natelecom.cn>
Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
 net/mptcp/pm.c         |  6 +-----
 net/mptcp/pm_netlink.c |  6 ++----
 net/mptcp/protocol.h   | 12 ------------
 3 files changed, 3 insertions(+), 21 deletions(-)

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index f1b520df228a..da0c4c925350 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -37,10 +37,6 @@ int mptcp_pm_announce_addr(struct mptcp_sock *msk,
 		msk->pm.local = *addr;
 		add_addr |= BIT(MPTCP_ADD_ADDR_SIGNAL);
 	}
-	if (addr->family == AF_INET6)
-		add_addr |= BIT(MPTCP_ADD_ADDR_IPV6);
-	if (addr->port)
-		add_addr |= BIT(MPTCP_ADD_ADDR_PORT);
 	WRITE_ONCE(msk->pm.addr_signal, add_addr);
 	return 0;
 }
@@ -280,7 +276,7 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, struct sk_buff *skb,
 	}
 
 	*echo = mptcp_pm_should_add_signal_echo(msk);
-	*port = mptcp_pm_should_add_signal_port(msk);
+	*port = !!(*echo ? msk->pm.remote.port : msk->pm.local.port);
 
 	family = *echo ? msk->pm.remote.family : msk->pm.local.family;
 	if (remaining < mptcp_add_addr_len(family, *echo, *port))
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index d8dfd872a6dd..1e4289c507ff 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -647,10 +647,8 @@ void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk)
 		bool slow;
 
 		spin_unlock_bh(&msk->pm.lock);
-		pr_debug("send ack for %s%s%s",
-			 mptcp_pm_should_add_signal(msk) ? "add_addr" : "rm_addr",
-			 mptcp_pm_should_add_signal_ipv6(msk) ? " [ipv6]" : "",
-			 mptcp_pm_should_add_signal_port(msk) ? " [port]" : "");
+		pr_debug("send ack for %s",
+			 mptcp_pm_should_add_signal(msk) ? "add_addr" : "rm_addr");
 
 		slow = lock_sock_fast(ssk);
 		tcp_send_ack(ssk);
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 27afacb6fde2..7cd3d5979bcd 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -178,8 +178,6 @@ enum mptcp_pm_status {
 enum mptcp_addr_signal_status {
 	MPTCP_ADD_ADDR_SIGNAL,
 	MPTCP_ADD_ADDR_ECHO,
-	MPTCP_ADD_ADDR_IPV6,
-	MPTCP_ADD_ADDR_PORT,
 	MPTCP_RM_ADDR_SIGNAL,
 };
 
@@ -762,16 +760,6 @@ static inline bool mptcp_pm_should_add_signal_echo(struct mptcp_sock *msk)
 	return READ_ONCE(msk->pm.addr_signal) & BIT(MPTCP_ADD_ADDR_ECHO);
 }
 
-static inline bool mptcp_pm_should_add_signal_ipv6(struct mptcp_sock *msk)
-{
-	return READ_ONCE(msk->pm.addr_signal) & BIT(MPTCP_ADD_ADDR_IPV6);
-}
-
-static inline bool mptcp_pm_should_add_signal_port(struct mptcp_sock *msk)
-{
-	return READ_ONCE(msk->pm.addr_signal) & BIT(MPTCP_ADD_ADDR_PORT);
-}
-
 static inline bool mptcp_pm_should_rm_signal(struct mptcp_sock *msk)
 {
 	return READ_ONCE(msk->pm.addr_signal) & BIT(MPTCP_RM_ADDR_SIGNAL);
-- 
2.33.0