netdev - [PATCH net-next 04/11] mptcp: use adding up size to get ADD

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Message-Id: <20201209235128.175473-5-mathew.j.martineau@linux.intel.com>
Date:   Wed,  9 Dec 2020 15:51:21 -0800
From:   Mat Martineau <mathew.j.martineau@...ux.intel.com>
To:     netdev@...r.kernel.org
Cc:     Geliang Tang <geliangtang@...il.com>, davem@...emloft.net,
        kuba@...nel.org, mptcp@...ts.01.org,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>
Subject: [PATCH net-next 04/11] mptcp: use adding up size to get ADD_ADDR length

From: Geliang Tang <geliangtang@...il.com>

This patch uses adding up size to get the ADD_ADDR suboption length rather
than returning the ADD_ADDR size constants.

Signed-off-by: Geliang Tang <geliangtang@...il.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@...ux.intel.com>
---
 net/mptcp/protocol.h | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 987046d9d1d4..5c45aabf4c6a 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -578,10 +578,14 @@ static inline bool mptcp_pm_should_rm_signal(struct mptcp_sock *msk)
 
 static inline unsigned int mptcp_add_addr_len(int family, bool echo)
 {
-	if (family == AF_INET)
-		return echo ? TCPOLEN_MPTCP_ADD_ADDR_BASE
-			    : TCPOLEN_MPTCP_ADD_ADDR;
-	return echo ? TCPOLEN_MPTCP_ADD_ADDR6_BASE : TCPOLEN_MPTCP_ADD_ADDR6;
+	u8 len = TCPOLEN_MPTCP_ADD_ADDR_BASE;
+
+	if (family == AF_INET6)
+		len = TCPOLEN_MPTCP_ADD_ADDR6_BASE;
+	if (!echo)
+		len += MPTCPOPT_THMAC_LEN;
+
+	return len;
 }
 
 bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
-- 
2.29.2