1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "DCCP CCIDs Configuration"
4 config IP_DCCP_CCID2_DEBUG
5 bool "CCID-2 debugging messages"
7 Enable CCID-2 specific debugging messages.
9 The debugging output can additionally be toggled by setting the
10 ccid2_debug parameter to 0 or 1.
15 bool "CCID-3 (TCP-Friendly)"
16 def_bool y if (IP_DCCP = y || IP_DCCP = m)
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.
28 CCID-3 is further described in RFC 4342,
29 https://www.ietf.org/rfc/rfc4342.txt
31 The TFRC congestion control algorithms were initially described in
34 This text was extracted from RFC 4340 (sec. 10.2),
35 https://www.ietf.org/rfc/rfc4340.txt
39 config IP_DCCP_CCID3_DEBUG
40 bool "CCID-3 debugging messages"
41 depends on IP_DCCP_CCID3
43 Enable CCID-3 specific debugging messages.
45 The debugging output can additionally be toggled by setting the
46 ccid3_debug parameter to 0 or 1.
50 config IP_DCCP_TFRC_LIB
51 def_bool y if IP_DCCP_CCID3
53 config IP_DCCP_TFRC_DEBUG
54 def_bool y if IP_DCCP_CCID3_DEBUG