[PATCH 3/3] ipv4: add documentation of two sysctls about icmp
From: <hidden>
Date: 2022-08-22 04:56:34
Subsystem:
documentation, networking [general], the rest · Maintainers:
Jonathan Corbet, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: xu xin <xu.xin16@zte.com.cn> Add the descriptions of the sysctls of error_cost and error_burst in Documentation/networking/ip-sysctl.rst. Signed-off-by: xu xin <xu.xin16@zte.com.cn> Reviewed-by: Yunkai Zhang <redacted> Signed-off-by: CGEL ZTE <redacted> --- Documentation/networking/ip-sysctl.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/Documentation/networking/ip-sysctl.rst b/Documentation/networking/ip-sysctl.rst
index 56cd4ea059b2..c113a34a4115 100644
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst@@ -156,6 +156,23 @@ route/max_size - INTEGER From linux kernel 3.6 onwards, this is deprecated for ipv4 as route cache is no longer used. +route/error_cost - INTEGER + The minimum time interval between two consecutive ICMP-DEST- + UNREACHABLE packets allowed sent to the same peer in the stable + period. Basically, The higher its value is, the lower the general + frequency of sending ICMP DEST-UNREACHABLE packets. + + Default: HZ (one second) + +route/error_burst - INTEGER + Together with error_cost, it controls the max number of burstly + sent ICMP DEST-UNREACHABLE packets after a long calm time (no + sending ICMP DEST-UNREACHABLE). Basically, the higher the rate + of error_burst over error_cost is, the more allowed burstly sent + ICMP DEST-UNREACHABLE packets after a long calm time. + + Default: 5 * HZ + neigh/default/gc_thresh1 - INTEGER Minimum number of entries to keep. Garbage collector will not purge entries if there are fewer than this number.
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2.25.1