linux-toradex.git/include/linux/dccp.h, branch v2.6.20.17

[DCCP]: Whitespace cleanups

2006-12-11T22:35:00+00:00

That accumulated over the last months hackaton, shame on me for not
using git-apply whitespace helping hand, will do that from now on.

Signed-off-by: Arnaldo Carvalho de Melo

[DCCP]: Tidy up unused structures

2006-12-03T05:30:59+00:00

This removes and cleans up unused variables and structures which have become
unnecessary following the introduction of the EWMA patch to automatically track
the CCID 3 receiver/sender packet sizes `s'.

It deprecates the PACKET_SIZE socket option by returning an error code and
printing a deprecation warning if an application tries to read or write this
socket option.

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

[NET]: Annotate checksums in on-the-wire packets.

2006-12-03T05:23:26+00:00

Signed-off-by: Al Viro 
Signed-off-by: David S. Miller

[DCCP]: Miscellaneous code tidy-ups

2006-12-03T05:22:30+00:00

This patch does not change code; it performs some trivial clean/tidy-ups:

  * removal of a `debug_prefix' string in favour of the
    already existing dccp_role(sk)

  * add documentation of structures and constants

  * separated out the cases for invalid packets (step 1
    of the packet validation)

  * removing duplicate statements

  * combining declaration & initialisation

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

[DCCP]: Make feature negotiation more readable

2006-12-03T05:22:29+00:00

This patch replaces cryptic feature negotiation messages of type

Oct 31 15:42:20 kernel: dccp_feat_change: feat change type=32 feat=1
Oct 31 15:42:21 kernel: dccp_feat_change: feat change type=34 feat=1
Oct 31 15:42:21 kernel: dccp_feat_change: feat change type=32 feat=5

into ones of type:

Nov  2 13:54:45 kernel: dccp_feat_change: ChangeL(CCID (1), 3)
Nov  2 13:54:45 kernel: dccp_feat_change: ChangeR(CCID (1), 3)
Nov  2 13:54:45 kernel: dccp_feat_change: ChangeL(Ack Ratio (5), 2)

Also,
	* completed the feature number list wrt RFC 4340 sec. 6.4
	* annotating which ones have been implemented so far
	* implemented rudimentary sanity checking in feat.c (FIXMEs)
	* some minor fixes

Commiter note: uninlined dccp_feat_name and dccp_feat_typename, for
               consistency with dccp_{state,packet}_name, that, BTW,
               should be compiled only if CONFIG_IP_DCCP_DEBUG is
               selected, leaving this to another cset tho. Also
               shortened dccp_feat_negotiation_debug to dccp_feat_debug.

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

[DCCP]: Combine allocating & zeroing header space on skb

2006-12-03T05:21:55+00:00

This is a code simplification:
it combines three often recurring operations into one inline function,

        * allocate `len' bytes header space in skb
        * fill these `len' bytes with zeroes
        * cast the start of this header space as dccp_hdr

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

[PATCH] dccp __user annotations

2006-10-10T22:37:20+00:00

Signed-off-by: Al Viro 
Acked-by: David S. Miller 
Signed-off-by: Linus Torvalds

[DCCP]: Introduce constants for CCID numbers

2006-09-24T20:56:32+00:00

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

[DCCP]: Allow default/fallback service code.

2006-09-24T20:49:26+00:00

This has been discussed on dccp@vger and removes the necessity for applications
to supply service codes in each and every case.

If an application does not want to provide a service code, that's fine, it will
be given 0. Otherwise, service codes can be set via socket options as before.

This patch has been tested using various client/server configurations
(including listening on multiple service codes).

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