linux-toradex.git/include/linux/sysctl.h, branch v2.6.20.21

[PATCH] IPV6: Disallow RH0 by default.

2007-04-26T05:06:33+00:00

[IPV6]: Disallow RH0 by default.

A security issue is emerging.  Disallow Routing Header Type 0 by default
as we have been doing for IPv4.
Note: We allow RH2 by default because it is harmless.

Signed-off-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

Remove duplicate "have to" in comment

2006-12-12T18:23:02+00:00

Introduced in commit 7cc13edc139108bb527b692f0548dce6bc648572.

Signed-off-by: Rolf Eike Beer 
Acked-by: Eric W. Biederman 
Signed-off-by: Adrian Bunk

[PATCH] sysctl: remove unused "context" param

2006-12-10T17:55:41+00:00

Signed-off-by: Alexey Dobriyan 
Cc: Andi Kleen 
Cc: "David S. Miller" 
Cc: David Howells 
Cc: Ralf Baechle 
Cc: "Eric W. Biederman" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[DCCP]: Remove allocation of sysctl numbers

2006-12-03T05:30:56+00:00

This is in response to a request sent earlier by Eric W. Biederman
and replaces all sysctl numbers for net.dccp.default with CTL_UNNUMBERED.

It has been tested to compile and to work.

Commiter note: I've removed the use of CTL_UNNUMBERED, not setting .ctl_name
               sets it to 0, that is the what CTL_UNNUMBERED is, reason is
               to avoid unneeded source code cluttering.

Signed-off-by: Gerrit Renker  
Signed-off-by: Ian McDonald 
Signed-off-by: Arnaldo Carvalho de Melo

[DCCP]: Adds the tx buffer sysctls

2006-12-03T05:24:42+00:00

This one got lost on the way from Ian to Gerrit to me, fix it.

Signed-off-by: Ian McDonald 
Signed-off-by: Arnaldo Carvalho de Melo

[DCCP]: Add sysctls to control retransmission behaviour

2006-12-03T05:22:18+00:00

This adds 3 sysctls which govern the retransmission behaviour of DCCP control
packets (3way handshake, feature negotiation).

It removes 4 FIXMEs from the code.

The close resemblance of sysctl variables to their TCP analogues is emphasised
not only by their name, but also by giving them the same initial values.
This is useful since there is not much practical experience with DCCP yet.

Furthermore, with regard to the previous patch, it is now possible to limit
the number of keepalive-Responses by setting net.dccp.default.request_retries
(also a bit like in TCP).

Lastly, added documentation of all existing DCCP sysctls.

Signed-off-by: Gerrit Renker 
Signed-off-by: Arnaldo Carvalho de Melo

[TCP]: Restrict congestion control choices.

2006-12-03T05:21:49+00:00

Allow normal users to only choose among a restricted set of congestion
control choices.  The default is reno and what ever has been configured
as default. But the policy can be changed by administrator at any time.

For example, to allow any choice:
    cp /proc/sys/net/ipv4/tcp_available_congestion_control \
       /proc/sys/net/ipv4/tcp_allowed_congestion_control

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[TCP]: Add tcp_available_congestion_control sysctl.

2006-12-03T05:21:48+00:00

Create /proc/sys/net/ipv4/tcp_available_congestion_control
that reflects currently available TCP choices.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[PATCH] sysctl: implement CTL_UNNUMBERED

2006-11-06T09:46:23+00:00

This patch takes the CTL_UNNUMBERD concept from NFS and makes it available to
all new sysctl users.

At the same time the sysctl binary interface maintenance documentation is
updated to mention and to describe what is needed to successfully maintain the
sysctl binary interface.

Signed-off-by: Eric W. Biederman 
Acked-by: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] sysctl: allow a zero ctl_name in the middle of a sysctl table

2006-11-06T09:46:23+00:00

Since it is becoming clear that there are just enough users of the binary
sysctl interface that completely removing the binary interface from the kernel
will not be an option for foreseeable future, we need to find a way to address
the sysctl maintenance issues.

The basic problem is that sysctl requires one central authority to allocate
sysctl numbers, or else conflicts and ABI breakage occur.  The proc interface
to sysctl does not have that problem, as names are not densely allocated.

By not terminating a sysctl table until I have neither a ctl_name nor a
procname, it becomes simple to add sysctl entries that don't show up in the
binary sysctl interface.  Which allows people to avoid allocating a binary
sysctl value when not needed.

I have audited the kernel code and in my reading I have not found a single
sysctl table that wasn't terminated by a completely zero filled entry.  So
this change in behavior should not affect anything.

I think this mechanism eases the pain enough that combined with a little
disciple we can solve the reoccurring sysctl ABI breakage.

Signed-off-by: Eric W. Biederman 
Acked-by: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds