11553 Want pluggable TCP congestion control algorithms
Portions contributed by: Cody Peter Mello <cody.mello@joyent.com>
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Robert Mustacchi <robert.mustacchi@joyent.com>

@@ -20,10 +20,11 @@
 #
 #
 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright 2019 Joyent, Inc.
 #
 #       This makefile drives the production of the ip driver 
 #       kernel module.
 #
 #       sparc architecture dependent

@@ -64,10 +65,23 @@
 # To get the BPF header files included by ipnet.h
 #
 INC_PATH        += -I$(UTSBASE)/common/io/bpf
 
 #
+# Depends on md5 and swrand (for SCTP). SCTP needs to depend on
+# swrand as it needs random numbers early on during boot before
+# kCF subsystem can load swrand.
+#
+LDFLAGS         += -dy -Nmisc/md5 -Ncrypto/swrand -Nmisc/hook -Nmisc/neti
+
+#
+# Depends on the congestion control framework for TCP connections.
+# We make several different algorithms available by default.
+#
+LDFLAGS         += -N misc/cc -N cc/cc_sunreno -N cc/cc_newreno -N cc/cc_cubic
+
+#
 # For now, disable these lint checks; maintainers should endeavor
 # to investigate and remove these for maximum lint coverage.
 # Please do not carry these forward to new Makefiles.
 #
 LINTTAGS        += -erroff=E_SUSPICIOUS_COMPARISON

@@ -84,17 +98,10 @@
 CERRWARN        += -_gcc=-Wno-switch
 CERRWARN        += -_gcc=-Wno-uninitialized
 CERRWARN        += -_gcc=-Wno-type-limits
 
 #
-# Depends on md5 and swrand (for SCTP). SCTP needs to depend on
-# swrand as it needs random numbers early on during boot before
-# kCF subsystem can load swrand.
-#
-LDFLAGS         += -dy -Nmisc/md5 -Ncrypto/swrand -Nmisc/hook -Nmisc/neti 
-
-#
 #       Default build targets.
 #
 .KEEP_STATE:
 
 def:            $(DEF_DEPS)