tcp: add new tcp_mtu_probe_floor sysctl

[linux-2.6-microblaze.git] / Documentation / networking / ip-sysctl.txt

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index df33674..49e95f4 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -256,6 +256,12 @@ tcp_base_mss - INTEGER
        Path MTU discovery (MTU probing).  If MTU probing is enabled,
        this is the initial MSS used by the connection.
 
+tcp_mtu_probe_floor - INTEGER
+       If MTU probing is enabled this caps the minimum MSS used for search_low
+       for the connection.
+
+       Default : 48
+
 tcp_min_snd_mss - INTEGER
        TCP SYN and SYNACK messages usually advertise an ADVMSS option,
        as described in RFC 1122 and RFC 6691.