dccp ccid-3: Simplify and consolidate tx_parse_options

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This simplifies and consolidates the TX option-parsing code:

 1. The Loss Intervals option is not currently used, so dead code related to
    this option is removed. I am aware of no plans to support the option, but
    if someone wants to implement it (e.g. for inter-op tests), it is better
    to start afresh than having to also update currently unused code.

 2. The Loss Event and Receive Rate options have a lot of code in common (both
    are 32 bit, both have same length etc.), so this is consolidated.

 3. The test against GSR is not necessary, because
    - on first loading CCID3, ccid_new() zeroes out all fields in the socket; 
    - ccid3_hc_tx_packet_recv() treats 0 and ~0U equivalently, due to

	pinv = opt_recv->ccid3or_loss_event_rate;
	if (pinv == ~0U || pinv == 0)
		hctx->p = 0;

    - as a result, the sequence number field is removed from opt_recv.
 
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>

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This commit is contained in:

Gerrit Renker 2008-09-04 07:30:19 +02:00

parent 63b3a73bb8

commit 47a61e7b43

2 changed files with 14 additions and 46 deletions

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net/dccp/ccids/ccid3.c

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3

net/dccp/ccids/ccid3.h

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