[TFRC]: Provide central source file and debug facility

This patch changes the tfrc_lib module in the following manner:

 (1) a dedicated tfrc source file to call the packet history &
     loss interval init/exit functions.
 (2) a dedicated tfrc_pr_debug macro with toggle switch `tfrc_debug'.

Commiter note: renamed tfrc_module.c to tfrc.c, and made CONFIG_IP_DCCP_CCID3
select IP_DCCP_TFRC_LIB.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 4 deletions

diff --git a/net/dccp/ccids/Kconfig b/net/dccp/ccids/Kconfig
index 3d7d867a7c4e..12275943eab8 100644
--- a/net/dccp/ccids/Kconfig
+++ b/net/dccp/ccids/Kconfig
@@ -38,6 +38,7 @@ config IP_DCCP_CCID2_DEBUG
 config IP_DCCP_CCID3
         tristate "CCID3 (TCP-Friendly) (EXPERIMENTAL)"
         def_tristate IP_DCCP
+        select IP_DCCP_TFRC_LIB
         ---help---
           CCID 3 denotes TCP-Friendly Rate Control (TFRC), an equation-based
           rate-controlled congestion control mechanism.  TFRC is designed to
@@ -63,10 +64,6 @@ config IP_DCCP_CCID3
 
           If in doubt, say M.
 
-config IP_DCCP_TFRC_LIB
-        depends on IP_DCCP_CCID3
-        def_tristate IP_DCCP_CCID3
-
 config IP_DCCP_CCID3_DEBUG
           bool "CCID3 debugging messages"
           depends on IP_DCCP_CCID3
@@ -110,5 +107,13 @@ config IP_DCCP_CCID3_RTO
             is serious network congestion: experimenting with larger values should
             therefore not be performed on WANs.
 
+config IP_DCCP_TFRC_LIB
+        tristate
+        default n
+
+config IP_DCCP_TFRC_DEBUG
+        bool
+        depends on IP_DCCP_TFRC_LIB
+        default y if IP_DCCP_CCID3_DEBUG
 
 endmenu