icmp: fix units for ratelimit

Convert the sysctl values for icmp ratelimit to use milliseconds instead
of jiffies which is based on kernel configured HZ.
Internal kernel jiffies are not a proper unit for any userspace API.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 4 deletions

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 17a6e46fbd43..71c7bea97160 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -548,8 +548,9 @@ icmp_echo_ignore_broadcasts - BOOLEAN
 icmp_ratelimit - INTEGER
         Limit the maximal rates for sending ICMP packets whose type matches
         icmp_ratemask (see below) to specific targets.
-        0 to disable any limiting, otherwise the maximal rate in jiffies(1)
-        Default: 100
+        0 to disable any limiting,
+        otherwise the minimal space between responses in milliseconds.
+        Default: 1000
 
 icmp_ratemask - INTEGER
         Mask made of ICMP types for which rates are being limited.
@@ -1027,8 +1028,9 @@ max_addresses - INTEGER
 icmp/*:
 ratelimit - INTEGER
         Limit the maximal rates for sending ICMPv6 packets.
-        0 to disable any limiting, otherwise the maximal rate in jiffies(1)
-        Default: 100
+        0 to disable any limiting,
+        otherwise the minimal space between responses in milliseconds.
+        Default: 1000
 
 
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