linux.git/Documentation/networking, branch v2.6.20

[DCCP]: Update documentation

2006-12-11T22:34:38+00:00

As Eddie Kohler points out the RFC is Proposed Standard not experimental.
Also removed documentation about deprecated socket option.

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

[NETLIK]: Add a pointer to the Generic Netlink wiki page.

2006-12-07T02:39:10+00:00

Add a pointer to the OSDL wiki page on Generic Netlink.

Signed-off-by: Paul Moore 
Signed-off-by: David S. Miller

[XFRM]: Fix aevent structuring to be more complete.

2006-12-03T06:22:25+00:00

aevents can not uniquely identify an SA. We break the ABI with this
patch, but consensus is that since it is not yet utilized by any
(known) application then it is fine (better do it now than later).

Signed-off-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller

[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]: Update Documentation

2006-12-03T05:24:40+00:00

This patch just updates DCCP documentation a bit.

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

[NET]: Supporting UDP-Lite (RFC 3828) in Linux

2006-12-03T05:22:46+00:00

This is a revision of the previously submitted patch, which alters
the way files are organized and compiled in the following manner:

	* UDP and UDP-Lite now use separate object files
	* source file dependencies resolved via header files
	  net/ipv{4,6}/udp_impl.h
	* order of inclusion files in udp.c/udplite.c adapted
	  accordingly

[NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)

This patch adds support for UDP-Lite to the IPv4 stack, provided as an
extension to the existing UDPv4 code:
        * generic routines are all located in net/ipv4/udp.c
        * UDP-Lite specific routines are in net/ipv4/udplite.c
        * MIB/statistics support in /proc/net/snmp and /proc/net/udplite
        * shared API with extensions for partial checksum coverage

[NET/IPv6]: Extension for UDP-Lite over IPv6

It extends the existing UDPv6 code base with support for UDP-Lite
in the same manner as per UDPv4. In particular,
        * UDPv6 generic and shared code is in net/ipv6/udp.c
        * UDP-Litev6 specific extensions are in net/ipv6/udplite.c
        * MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
        * support for IPV6_ADDRFORM
        * aligned the coding style of protocol initialisation with af_inet6.c
        * made the error handling in udpv6_queue_rcv_skb consistent;
          to return `-1' on error on all error cases
        * consolidation of shared code

[NET]: UDP-Lite Documentation and basic XFRM/Netfilter support

The UDP-Lite patch further provides
        * API documentation for UDP-Lite
        * basic xfrm support
        * basic netfilter support for IPv4 and IPv6 (LOG target)

Signed-off-by: Gerrit Renker 
Signed-off-by: David S. Miller

[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

[DCCP]: Support for partial checksums (RFC 4340, sec. 9.2)

2006-12-03T05:22:09+00:00

This patch does the following:
  a) introduces variable-length checksums as specified in [RFC 4340, sec. 9.2]
  b) provides necessary socket options and documentation as to how to use them
  c) basic support and infrastructure for the Minimum Checksum Coverage feature
     [RFC 4340, sec. 9.2.1]: acceptability tests, user notification and user
     interface

In addition, it

 (1) fixes two bugs in the DCCPv4 checksum computation:
 	* pseudo-header used checksum_len instead of skb->len
	* incorrect checksum coverage calculation based on dccph_x
 (2) removes dccp_v4_verify_checksum() since it reduplicates code of the
     checksum computation; code calling this function is updated accordingly.
 (3) now uses skb_checksum(), which is safer than checksum_partial() if the
     sk_buff has is a non-linear buffer (has pages attached to it).
 (4) fixes an outstanding TODO item:
        * If P.CsCov is too large for the packet size, drop packet and return.

The code has been tested with applications, the latest version of tcpdump now
comes with support for partial DCCP checksums.

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

[NET] ip-sysctl.txt: Alphabetize.

2006-12-03T05:21:51+00:00

Rearrange TCP entries in alpha order.

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

[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