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yaml
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r: 13807
b: refs/heads/master
c: 6d23c8b
h: refs/heads/master
i:
  13805: 0ef5687
  13803: 96c3b7a
  13799: 696d9aa
  13791: e785432
v: v3
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Linus Torvalds committed Nov 10, 2005
1 parent 21ca105 commit 12990c1
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Showing 147 changed files with 12,551 additions and 2,856 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 780d09e895032207a6b070a44d392a3c60574b70
refs/heads/master: 6d23c8bc7a6af4300b3c5244f4c21211f9adb960
56 changes: 56 additions & 0 deletions trunk/Documentation/networking/dccp.txt
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DCCP protocol
============

Last updated: 10 November 2005

Contents
========

- Introduction
- Missing features
- Socket options
- Notes

Introduction
============

Datagram Congestion Control Protocol (DCCP) is an unreliable, connection
based protocol designed to solve issues present in UDP and TCP particularly
for real time and multimedia traffic.

It has a base protocol and pluggable congestion control IDs (CCIDs).

It is at draft RFC status and the homepage for DCCP as a protocol is at:
http://www.icir.org/kohler/dcp/

Missing features
================

The DCCP implementation does not currently have all the features that are in
the draft RFC.

In particular the following are missing:
- CCID2 support
- feature negotiation

When testing against other implementations it appears that elapsed time
options are not coded compliant to the specification.

Socket options
==============

DCCP_SOCKOPT_PACKET_SIZE is used for CCID3 to set default packet size for
calculations.

DCCP_SOCKOPT_SERVICE sets the service. This is compulsory as per the
specification. If you don't set it you will get EPROTO.

Notes
=====

SELinux does not yet have support for DCCP. You will need to turn it off or
else you will get EACCES.

DCCP does not travel through NAT successfully at present. This is because
the checksum covers the psuedo-header as per TCP and UDP. It should be
relatively trivial to add Linux NAT support for DCCP.
2 changes: 1 addition & 1 deletion trunk/MAINTAINERS
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Expand Up @@ -707,7 +707,7 @@ DCCP PROTOCOL
P: Arnaldo Carvalho de Melo
M: acme@mandriva.com
L: dccp@vger.kernel.org
W: http://www.wlug.org.nz/DCCP
W: http://linux-net.osdl.org/index.php/DCCP
S: Maintained

DECnet NETWORK LAYER
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4 changes: 2 additions & 2 deletions trunk/Makefile
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Expand Up @@ -347,7 +347,7 @@ AFLAGS_KERNEL =
# Needed to be compatible with the O= option
LINUXINCLUDE := -Iinclude \
$(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
-imacros include/linux/autoconf.h
-include include/linux/autoconf.h

CPPFLAGS := -D__KERNEL__ $(LINUXINCLUDE)

Expand Down Expand Up @@ -407,7 +407,7 @@ outputmakefile:
# of make so .config is not included in this case either (for *config).

no-dot-config-targets := clean mrproper distclean \
cscope TAGS tags help %docs check%
cscope TAGS tags help %docs check% kernelrelease

config-targets := 0
mixed-targets := 0
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2 changes: 2 additions & 0 deletions trunk/arch/arm/Kconfig
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Expand Up @@ -239,6 +239,8 @@ source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"

source "arch/arm/mach-omap2/Kconfig"

source "arch/arm/mach-s3c2410/Kconfig"

source "arch/arm/mach-lh7a40x/Kconfig"
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1 change: 1 addition & 0 deletions trunk/arch/arm/Makefile
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Expand Up @@ -93,6 +93,7 @@ textaddr-$(CONFIG_ARCH_FORTUNET) := 0xc0008000
machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
machine-$(CONFIG_ARCH_IXP2000) := ixp2000
machine-$(CONFIG_ARCH_OMAP1) := omap1
machine-$(CONFIG_ARCH_OMAP2) := omap2
incdir-$(CONFIG_ARCH_OMAP) := omap
machine-$(CONFIG_ARCH_S3C2410) := s3c2410
machine-$(CONFIG_ARCH_LH7A40X) := lh7a40x
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