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Linux/net/dccp/ccids/Kconfig

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  1 # SPDX-License-Identifier: GPL-2.0-only
  2 menu "DCCP CCIDs Configuration"
  3 
  4 config IP_DCCP_CCID2_DEBUG
  5         bool "CCID-2 debugging messages"
  6         help
  7           Enable CCID-2 specific debugging messages.
  8 
  9           The debugging output can additionally be toggled by setting the
 10           ccid2_debug parameter to 0 or 1.
 11 
 12           If in doubt, say N.
 13 
 14 config IP_DCCP_CCID3
 15         bool "CCID-3 (TCP-Friendly)"
 16         default IP_DCCP = y || IP_DCCP = m
 17         help
 18           CCID-3 denotes TCP-Friendly Rate Control (TFRC), an equation-based
 19           rate-controlled congestion control mechanism.  TFRC is designed to
 20           be reasonably fair when competing for bandwidth with TCP-like flows,
 21           where a flow is "reasonably fair" if its sending rate is generally
 22           within a factor of two of the sending rate of a TCP flow under the
 23           same conditions.  However, TFRC has a much lower variation of
 24           throughput over time compared with TCP, which makes CCID-3 more
 25           suitable than CCID-2 for applications such streaming media where a
 26           relatively smooth sending rate is of importance.
 27 
 28           CCID-3 is further described in RFC 4342,
 29           https://www.ietf.org/rfc/rfc4342.txt
 30 
 31           The TFRC congestion control algorithms were initially described in
 32           RFC 5348.
 33 
 34           This text was extracted from RFC 4340 (sec. 10.2),
 35           https://www.ietf.org/rfc/rfc4340.txt
 36 
 37           If in doubt, say N.
 38 
 39 config IP_DCCP_CCID3_DEBUG
 40         bool "CCID-3 debugging messages"
 41         depends on IP_DCCP_CCID3
 42         help
 43           Enable CCID-3 specific debugging messages.
 44 
 45           The debugging output can additionally be toggled by setting the
 46           ccid3_debug parameter to 0 or 1.
 47 
 48           If in doubt, say N.
 49 
 50 config IP_DCCP_TFRC_LIB
 51         def_bool y if IP_DCCP_CCID3
 52 
 53 config IP_DCCP_TFRC_DEBUG
 54         def_bool y if IP_DCCP_CCID3_DEBUG
 55 endmenu

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