tcp: fix tcp_rmem documentation

commit 1d1be91254bbdd189796041561fd430f7553bb88 upstream.

tcp_rmem[1] has been changed to 131072, we should update the documentation
to reflect this.

Fixes: a337531b942b ("tcp: up initial rmem to 128KB and SYN rwin to around 64KB")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Zhibin Liu <zhibinliu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
index 25e6673a085a0f55f1f23bd3974e806ed2706f68..4abcfff15e384756077cf52b721391449389a67f 100644 (file)
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -630,16 +630,15 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max
 
        default: initial size of receive buffer used by TCP sockets.
        This value overrides net.core.rmem_default used by other protocols.
-       Default: 87380 bytes. This value results in window of 65535 with
-       default setting of tcp_adv_win_scale and tcp_app_win:0 and a bit
-       less for default tcp_app_win. See below about these variables.
+       Default: 131072 bytes.
+       This value results in initial window of 65535.
 
        max: maximal size of receive buffer allowed for automatically
        selected receiver buffers for TCP socket. This value does not override
        net.core.rmem_max.  Calling setsockopt() with SO_RCVBUF disables
        automatic tuning of that socket's receive buffer size, in which
        case this value is ignored.
-       Default: between 87380B and 6MB, depending on RAM size.
+       Default: between 131072 and 6MB, depending on RAM size.
 
 tcp_sack - BOOLEAN
        Enable select acknowledgments (SACKS).