# Makefile - Network stack Makefile for Qemu based testing

#
# Copyright (c) 2015 Intel Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

PIPE_BASE=/tmp/ip-stack

ifeq ($(MAKECMDGOALS),server)
	QEMU_NUM=server
endif
ifeq ($(MAKECMDGOALS),client)
	QEMU_NUM=client
endif
ifdef QEMU_NUM
	QEMU_EXTRA_FLAGS += -serial none -serial pipe:${PIPE_BASE}-${QEMU_NUM}	\
			    -pidfile qemu-${QEMU_NUM}.pid
else
	QEMU_EXTRA_FLAGS += -serial none -serial unix:/tmp/slip.sock
endif

PIPE_SERVER_IN=${PIPE_BASE}-server.in
PIPE_SERVER_OUT=${PIPE_BASE}-server.out
PIPE_CLIENT_IN=${PIPE_BASE}-client.in
PIPE_CLIENT_OUT=${PIPE_BASE}-client.out

.PHONY: remove_pipes
remove_pipes:
	rm -f ${PIPE_SERVER_IN} ${PIPE_SERVER_OUT} ${PIPE_CLIENT_IN} \
	      ${PIPE_CLIENT_OUT}

${PIPE_SERVER_IN}:
	mkfifo $@
${PIPE_SERVER_OUT}:
	mkfifo $@
${PIPE_CLIENT_IN}:
	mkfifo $@
${PIPE_CLIENT_OUT}:
	mkfifo $@
LINK_CLIENT_PIPES:
	ln ${PIPE_SERVER_IN} ${PIPE_CLIENT_OUT}
	ln ${PIPE_SERVER_OUT} ${PIPE_CLIENT_IN}

.PHONY: PIPE_CLIENT_IN_LINK
PIPE_CLIENT_IN_LINK: ${PIPE_SERVER_IN}
	-ln ${PIPE_SERVER_IN} ${PIPE_CLIENT_OUT}

.PHONY: PIPE_CLIENT_OUT_LINK
PIPE_CLIENT_OUT_LINK: ${PIPE_SERVER_OUT}
	-ln ${PIPE_SERVER_OUT} ${PIPE_CLIENT_IN}

# Setup the dual qemu test case with pcap support (two qemus passing data
# between them and saving data to pcap via help of monitor applicaiton)
.PHONY: setup_pipes_dual_monitor
setup_pipes_dual_monitor: ${PIPE_SERVER_IN} ${PIPE_SERVER_OUT} \
			  ${PIPE_CLIENT_IN} ${PIPE_CLIENT_OUT}

# Setup the dual qemu test case with (two qemus passing data
# between them)
.PHONY: setup_pipes
setup_pipes: ${PIPE_SERVER_IN} ${PIPE_SERVER_OUT} LINK_CLIENT_PIPES

export QEMU_NUM
export QEMU_EXTRA_FLAGS

PID_FILE=/tmp/monitor_15_4.pid

hosttoolsmake = @$(MAKE) -C $(ZEPHYR_BASE)/net/tools $1

${ZEPHYR_BASE}/net/tools/monitor_15_4:
	$(Q)$(call hosttoolsmake,monitor_15_4)

.PHONY: start_monitor
start_monitor: ${ZEPHYR_BASE}/net/tools/monitor_15_4
	${ZEPHYR_BASE}/net/tools/monitor_15_4 \
		${PCAP} \
		${PIPE_BASE}-server ${PIPE_BASE}-client > /dev/null & \
		echo "$$!" > ${PID_FILE}

ifeq ($(PCAP),)
server: remove_pipes setup_pipes $(DOTCONFIG)
	$(Q)$(call zephyrmake,$(O),qemu); true
	$(Q)stty sane
else
server: remove_pipes setup_pipes_dual_monitor start_monitor $(DOTCONFIG)
	$(Q)$(call zephyrmake,$(O),qemu); true
	$(Q)kill `cat ${PID_FILE}`
	$(Q)rm -f ${PID_FILE}
	-@killall monitor_15_4 > /dev/null 2>&1 ; true
	$(Q)stty sane
endif

client: $(DOTCONFIG)
	$(Q)$(call zephyrmake,$(O),qemu); true
	$(Q)stty sane