xref: /openbmc/linux/net/dccp/ccids/Kconfig (revision 266f3128)
1# SPDX-License-Identifier: GPL-2.0-only
2menu "DCCP CCIDs Configuration"
3
4config 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
14config IP_DCCP_CCID3
15	bool "CCID-3 (TCP-Friendly)"
16	def_bool y if (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
39config 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
50config IP_DCCP_TFRC_LIB
51	def_bool y if IP_DCCP_CCID3
52
53config IP_DCCP_TFRC_DEBUG
54	def_bool y if IP_DCCP_CCID3_DEBUG
55endmenu
56