Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/net/dccp/ccids/Kconfig b/net/dccp/ccids/Kconfig
new file mode 100644
index 000000000..8ba3fc9d6
--- /dev/null
+++ b/net/dccp/ccids/Kconfig
@@ -0,0 +1,54 @@
+menu "DCCP CCIDs Configuration"
+
+config IP_DCCP_CCID2_DEBUG
+	bool "CCID-2 debugging messages"
+	---help---
+	  Enable CCID-2 specific debugging messages.
+
+	  The debugging output can additionally be toggled by setting the
+	  ccid2_debug parameter to 0 or 1.
+
+	  If in doubt, say N.
+
+config IP_DCCP_CCID3
+	bool "CCID-3 (TCP-Friendly)"
+	def_bool y if (IP_DCCP = y || IP_DCCP = m)
+	---help---
+	  CCID-3 denotes TCP-Friendly Rate Control (TFRC), an equation-based
+	  rate-controlled congestion control mechanism.  TFRC is designed to
+	  be reasonably fair when competing for bandwidth with TCP-like flows,
+	  where a flow is "reasonably fair" if its sending rate is generally
+	  within a factor of two of the sending rate of a TCP flow under the
+	  same conditions.  However, TFRC has a much lower variation of
+	  throughput over time compared with TCP, which makes CCID-3 more
+	  suitable than CCID-2 for applications such streaming media where a
+	  relatively smooth sending rate is of importance.
+
+	  CCID-3 is further described in RFC 4342,
+	  http://www.ietf.org/rfc/rfc4342.txt
+
+	  The TFRC congestion control algorithms were initially described in
+	  RFC 5348.
+
+	  This text was extracted from RFC 4340 (sec. 10.2),
+	  http://www.ietf.org/rfc/rfc4340.txt
+
+	  If in doubt, say N.
+
+config IP_DCCP_CCID3_DEBUG
+	bool "CCID-3 debugging messages"
+	depends on IP_DCCP_CCID3
+	---help---
+	  Enable CCID-3 specific debugging messages.
+
+	  The debugging output can additionally be toggled by setting the
+	  ccid3_debug parameter to 0 or 1.
+
+	  If in doubt, say N.
+
+config IP_DCCP_TFRC_LIB
+	def_bool y if IP_DCCP_CCID3
+
+config IP_DCCP_TFRC_DEBUG
+	def_bool y if IP_DCCP_CCID3_DEBUG
+endmenu