netdev - Re: [net-next-2.6 PATCH v8 3/7] TCPCT part 1c: sysctl_tcp_cookie_size, socket option TCP_COOKIE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4B173B1B.1060502@gmail.com>
Date:	Wed, 02 Dec 2009 23:14:19 -0500
From:	William Allen Simpson <william.allen.simpson@...il.com>
To:	Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [net-next-2.6 PATCH v8 3/7] TCPCT part 1c: sysctl_tcp_cookie_size,
 socket option TCP_COOKIE_TRANSACTIONS

Define sysctl (tcp_cookie_size) to turn on and off the cookie option
default globally, instead of a compiled configuration option.

Define per socket option (TCP_COOKIE_TRANSACTIONS) for setting constant
data values, retrieving variable cookie values, and other facilities.

Move inline tcp_clear_options() unchanged from net/tcp.h to linux/tcp.h,
near its corresponding struct tcp_options_received (prior to changes).

This is a straightforward re-implementation of an earlier (year-old)
patch that no longer applies cleanly, with permission of the original
author (Adam Langley):

    http://thread.gmane.org/gmane.linux.network/102586

These functions will also be used in subsequent patches that implement
additional features.

Requires:
   net: TCP_MSS_DEFAULT, TCP_MSS_DESIRED

Signed-off-by: William.Allen.Simpson@...il.com
---
  Documentation/networking/ip-sysctl.txt |    8 +++++++
  include/linux/tcp.h                    |   33 +++++++++++++++++++++++++++++++-
  include/net/tcp.h                      |    6 +----
  net/ipv4/sysctl_net_ipv4.c             |    8 +++++++
  net/ipv4/tcp_output.c                  |    3 ++
  5 files changed, 52 insertions(+), 6 deletions(-)

View attachment "TCPCT+1c8.patch" of type "text/plain" (5022 bytes)