Documentation: Fix tcp_challenge_ack_limit default value

The default value of tcp_challenge_ack_limit has been changed from
100 to 1000 and this patch fixes its documentation.

Signed-off-by: Cambda Zhu <cambda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index ee961d322d931213745e5d4abbc27d400b1420b8..6fcfd313dbe417ee7ee1098870ccb72a42a797a6 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -812,7 +812,7 @@ tcp_limit_output_bytes - INTEGER
 tcp_challenge_ack_limit - INTEGER
        Limits number of Challenge ACK sent per second, as recommended
        in RFC 5961 (Improving TCP's Robustness to Blind In-Window Attacks)
-       Default: 100
+       Default: 1000
 
 tcp_rx_skb_cache - BOOLEAN
        Controls a per TCP socket cache of one skb, that might help