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-rw-r--r--Documentation/networking/ip-sysctl.txt13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 1b5581a30d77..c7a81ace35d0 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -769,8 +769,21 @@ icmp_ratelimit - INTEGER
icmp_ratemask (see below) to specific targets.
0 to disable any limiting,
otherwise the minimal space between responses in milliseconds.
+ Note that another sysctl, icmp_msgs_per_sec limits the number
+ of ICMP packets sent on all targets.
Default: 1000
+icmp_msgs_per_sec - INTEGER
+ Limit maximal number of ICMP packets sent per second from this host.
+ Only messages whose type matches icmp_ratemask (see below) are
+ controlled by this limit.
+ Default: 1000
+
+icmp_msgs_burst - INTEGER
+ icmp_msgs_per_sec controls number of ICMP packets sent per second,
+ while icmp_msgs_burst controls the burst size of these packets.
+ Default: 50
+
icmp_ratemask - INTEGER
Mask made of ICMP types for which rates are being limited.
Significant bits: IHGFEDCBA9876543210