tcp: Change usage factor of sending buffer in tcp_get_sndbuf() to 75%

Now that we have a new clamped_scale() function, which makes it simple
to specify a precise usage factor, change the amount of sending buffer
we want to use at and above 4 MiB: 75% looks perfectly safe.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/tcp.c b/tcp.c
index 026546a..37aceed 100644
--- a/tcp.c
+++ b/tcp.c
@@ -773,7 +773,7 @@ static void tcp_rtt_dst_check(const struct tcp_tap_conn *conn,
 }
 
 /**
- * tcp_get_sndbuf() - Get, scale SO_SNDBUF between thresholds (1 to 0.5 usage)
+ * tcp_get_sndbuf() - Get, scale SO_SNDBUF between thresholds (1 to 0.75 usage)
  * @conn:	Connection pointer
  */
 static void tcp_get_sndbuf(struct tcp_tap_conn *conn)
@@ -788,7 +788,7 @@ static void tcp_get_sndbuf(struct tcp_tap_conn *conn)
 		return;
 	}
 
-	v = clamped_scale(sndbuf, sndbuf, SNDBUF_SMALL, SNDBUF_BIG, 50);
+	v = clamped_scale(sndbuf, sndbuf, SNDBUF_SMALL, SNDBUF_BIG, 75);
 
 	SNDBUF_SET(conn, MIN(INT_MAX, v));
 }