no ns-2.35/dsrc/ ?
$ cd ns-allinone-2.35/
$ patch -p0 < Vanet-Wave1609.r2_ns235.patch
patching file ns-2.35/common/packet.h
patching file ns-2.35/dsrc/channel_sched.cc
patching file ns-2.35/dsrc/channel_sched.h
patching file ns-2.35/dsrc/dsrc_app.cc
patching file ns-2.35/dsrc/dsrc_app.h
patching file ns-2.35/dsrc/dsrc.cc
patching file ns-2.35/dsrc/dsrc_const.h
patching file ns-2.35/dsrc/dsrc.h
patching file ns-2.35/dsrc/round_robin.cc
patching file ns-2.35/dsrc/round_robin.h
patching file ns-2.35/mac/mac-802_11Ext.cc
patching file ns-2.35/mac/mac-802_11Ext.h
patching file ns-2.35/mac/mac.h
patching file ns-2.35/mac/wireless-phyExt.cc
patching file ns-2.35/mac/wireless-phyExt.h
patching file ns-2.35/Makefile.in
patching file ns-2.35/tcl/lib/ns-default.tcl
patching file ns-2.35/tcl/lib/ns-packet.tcl
patching file ns-2.35/trace/cmu-trace.cc
........ If any doubt, do not run make, but 'export CC=gcc-4.8 CXX=g++-4.8 && ./install' in ns-allinone-2.35