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authorGravatar Thomas Gleixner <tglx@linutronix.de> 2019-07-03 10:50:21 +0200
committerGravatar Thomas Gleixner <tglx@linutronix.de> 2019-07-03 10:50:21 +0200
commit341924049558e5f7c1a148a2c461a417933d35d9 (patch)
tree1340b4f2131737ef4be63f18ee74cd73ad12cd3e /Documentation/networking/ip-sysctl.txt
parenthrtimer: Use a bullet for the returns bullet list (diff)
parentMAINTAINERS: Fix Andy's surname and the directory entries of VDSO (diff)
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Merge branch 'timers/vdso' into timers/core
so the hyper-v clocksource update can be applied.
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
-rw-r--r--Documentation/networking/ip-sysctl.txt16
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diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 14fe93049d28..22f6b8b1110a 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -255,6 +255,14 @@ tcp_base_mss - INTEGER
Path MTU discovery (MTU probing). If MTU probing is enabled,
this is the initial MSS used by the connection.
+tcp_min_snd_mss - INTEGER
+ TCP SYN and SYNACK messages usually advertise an ADVMSS option,
+ as described in RFC 1122 and RFC 6691.
+ If this ADVMSS option is smaller than tcp_min_snd_mss,
+ it is silently capped to tcp_min_snd_mss.
+
+ Default : 48 (at least 8 bytes of payload per segment)
+
tcp_congestion_control - STRING
Set the congestion control algorithm to be used for new
connections. The algorithm "reno" is always available, but
@@ -772,6 +780,14 @@ tcp_challenge_ack_limit - INTEGER
in RFC 5961 (Improving TCP's Robustness to Blind In-Window Attacks)
Default: 100
+tcp_rx_skb_cache - BOOLEAN
+ Controls a per TCP socket cache of one skb, that might help
+ performance of some workloads. This might be dangerous
+ on systems with a lot of TCP sockets, since it increases
+ memory usage.
+
+ Default: 0 (disabled)
+
UDP variables:
udp_l3mdev_accept - BOOLEAN