[PATCH 09/24] tcp: extract buffer management from tcp_conn_tap_mss()

[Laurent Vivier <lvivier@redhat.com>]

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
 tcp.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/tcp.c b/tcp.c
index 20ad8a4e5271..cdbceed65033 100644
--- a/tcp.c
+++ b/tcp.c
@@ -1813,6 +1813,14 @@ int tcp_conn_new_sock(const struct ctx *c, sa_family_t af)
 	return s;
 }
 
+static uint16_t tcp_buf_conn_tap_mss(const struct tcp_tap_conn *conn)
+{
+	if (CONN_V4(conn))
+		return MSS4;
+
+	return MSS6;
+}
+
 /**
  * tcp_conn_tap_mss() - Get MSS value advertised by tap/guest
  * @conn:	Connection pointer
@@ -1832,10 +1840,7 @@ static uint16_t tcp_conn_tap_mss(const struct tcp_tap_conn *conn,
 	else
 		mss = ret;
 
-	if (CONN_V4(conn))
-		mss = MIN(MSS4, mss);
-	else
-		mss = MIN(MSS6, mss);
+	mss = MIN(tcp_buf_conn_tap_mss(conn), mss);
 
 	return MIN(mss, USHRT_MAX);
 }
-- 
@@ -1813,6 +1813,14 @@ int tcp_conn_new_sock(const struct ctx *c, sa_family_t af)
 	return s;
 }
 
+static uint16_t tcp_buf_conn_tap_mss(const struct tcp_tap_conn *conn)
+{
+	if (CONN_V4(conn))
+		return MSS4;
+
+	return MSS6;
+}
+
 /**
  * tcp_conn_tap_mss() - Get MSS value advertised by tap/guest
  * @conn:	Connection pointer
@@ -1832,10 +1840,7 @@ static uint16_t tcp_conn_tap_mss(const struct tcp_tap_conn *conn,
 	else
 		mss = ret;
 
-	if (CONN_V4(conn))
-		mss = MIN(MSS4, mss);
-	else
-		mss = MIN(MSS6, mss);
+	mss = MIN(tcp_buf_conn_tap_mss(conn), mss);
 
 	return MIN(mss, USHRT_MAX);
 }
-- 
2.42.0