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authorZhu Yanjun <zyjzyj2000@gmail.com>2015-12-16 13:55:04 +0800
committerDavid S. Miller <davem@davemloft.net>2015-12-16 10:56:50 -0500
commit566178f853c1aa57be9c16007c7cca07df5d51b6 (patch)
tree06be833c93f5428271951e61c30b63acbef46a3d /Documentation/networking/ip-sysctl.txt
parent6857a02af5386e9f5d11734363741dbe6b0a6959 (diff)
downloadlinux-566178f853c1aa57be9c16007c7cca07df5d51b6.tar.bz2
net: sctp: dynamically enable or disable pf state
As we all know, the value of pf_retrans >= max_retrans_path can disable pf state. The variables of pf_retrans and max_retrans_path can be changed by the userspace application. Sometimes the user expects to disable pf state while the 2 variables are changed to enable pf state. So it is necessary to introduce a new variable to disable pf state. According to the suggestions from Vlad Yasevich, extra1 and extra2 are removed. The initialization of pf_enable is added. Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: Zhu Yanjun <zyjzyj2000@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking/ip-sysctl.txt')
-rw-r--r--Documentation/networking/ip-sysctl.txt23
1 files changed, 22 insertions, 1 deletions
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 2ea4c45cf1c8..5de632ed0ec0 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -1723,6 +1723,25 @@ addip_enable - BOOLEAN
Default: 0
+pf_enable - INTEGER
+ Enable or disable pf (pf is short for potentially failed) state. A value
+ of pf_retrans > path_max_retrans also disables pf state. That is, one of
+ both pf_enable and pf_retrans > path_max_retrans can disable pf state.
+ Since pf_retrans and path_max_retrans can be changed by userspace
+ application, sometimes user expects to disable pf state by the value of
+ pf_retrans > path_max_retrans, but occasionally the value of pf_retrans
+ or path_max_retrans is changed by the user application, this pf state is
+ enabled. As such, it is necessary to add this to dynamically enable
+ and disable pf state. See:
+ https://datatracker.ietf.org/doc/draft-ietf-tsvwg-sctp-failover for
+ details.
+
+ 1: Enable pf.
+
+ 0: Disable pf.
+
+ Default: 1
+
addip_noauth_enable - BOOLEAN
Dynamic Address Reconfiguration (ADD-IP) requires the use of
authentication to protect the operations of adding or removing new
@@ -1799,7 +1818,9 @@ pf_retrans - INTEGER
having to reduce path_max_retrans to a very low value. See:
http://www.ietf.org/id/draft-nishida-tsvwg-sctp-failover-05.txt
for details. Note also that a value of pf_retrans > path_max_retrans
- disables this feature
+ disables this feature. Since both pf_retrans and path_max_retrans can
+ be changed by userspace application, a variable pf_enable is used to
+ disable pf state.
Default: 0