summaryrefslogtreecommitdiffstats
path: root/Makefile
blob: 709fb73dce952228931549c0d4b365a7a3d464b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
# Copyright (c) 2016 Cisco and/or its affiliates.
# 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.

export WS_ROOT=$(CURDIR)
export BR=$(WS_ROOT)/build-root
CCACHE_DIR?=$(BR)/.ccache
GDB?=gdb
PLATFORM?=vpp
SAMPLE_PLUGIN?=no
STARTUP_DIR?=$(PWD)
MACHINE=$(shell uname -m)
SUDO?=sudo
DPDK_CONFIG?=no-pci

,:=,
define disable_plugins
$(if $(1), \
  "plugins {" \
  $(patsubst %,"plugin %_plugin.so { disable }",$(subst $(,), ,$(1))) \
  " }" \
  ,)
endef

MINIMAL_STARTUP_CONF="							\
unix { 									\
	interactive 							\
	cli-listen /run/vpp/cli.sock					\
	gid $(shell id -g)						\
	$(if $(wildcard startup.vpp),"exec startup.vpp",)		\
}									\
$(if $(DPDK_CONFIG), "dpdk { $(DPDK_CONFIG) }",)			\
$(call disable_plugins,$(DISABLED_PLUGINS))				\
"

GDB_ARGS= -ex "handle SIGUSR1 noprint nostop"

#
# OS Detection
#
# We allow Darwin (MacOS) for docs generation; VPP build will still fail.
ifneq ($(shell uname),Darwin)
OS_ID        = $(shell grep '^ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
OS_VERSION_ID= $(shell grep '^VERSION_ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
endif

ifeq ($(filter ubuntu debian,$(OS_ID)),$(OS_ID))
PKG=deb
else ifeq ($(filter rhel centos fedora opensuse opensuse-leap opensuse-tumbleweed,$(OS_ID)),$(OS_ID))
PKG=rpm
endif

# +libganglia1-dev if building the gmond plugin

DEB_DEPENDS  = curl build-essential autoconf automake ccache
DEB_DEPENDS += debhelper dkms git libtool libapr1-dev dh-systemd
DEB_DEPENDS += libconfuse-dev git-review exuberant-ctags cscope pkg-config
DEB_DEPENDS += lcov chrpath autoconf indent clang-format libnuma-dev
DEB_DEPENDS += python3-all python3-setuptools check
DEB_DEPENDS += libboost-all-dev libffi-dev python3-ply libmbedtls-dev
DEB_DEPENDS += cmake ninja-build uuid-dev python3-jsonschema python3-yaml
DEB_DEPENDS += python3-venv  # ensurepip
DEB_DEPENDS += python3-dev   # needed for python3 -m pip install psutil
# python3.6 on 16.04 requires python36-dev

LIBFFI=libffi6 # works on all but 20.04

ifeq ($(OS_VERSION_ID),18.04)
	DEB_DEPENDS += python-dev python-all python-pip python-virtualenv
	DEB_DEPENDS += libssl-dev
	DEB_DEPENDS += clang-9
else ifeq ($(OS_VERSION_ID),20.04)
	DEB_DEPENDS += python3-virtualenv
	LIBFFI=libffi7
else ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-8)
	DEB_DEPENDS += libssl-dev
	DEB_DEPENDS += python-dev python-all python-pip python-virtualenv
	APT_ARGS = -t jessie-backports
else ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-9)
	DEB_DEPENDS += libssl1.0-dev
	DEB_DEPENDS += python-all python-pip
	DEB_DEPENDS += python-dev python-all python-pip python-virtualenv
else
	DEB_DEPENDS += libssl-dev
endif

DEB_DEPENDS += $(LIBFFI)

RPM_DEPENDS  = redhat-lsb glibc-static
RPM_DEPENDS += apr-devel
RPM_DEPENDS += numactl-devel
RPM_DEPENDS += check check-devel
RPM_DEPENDS += boost boost-devel
RPM_DEPENDS += selinux-policy selinux-policy-devel
RPM_DEPENDS += ninja-build
RPM_DEPENDS += libuuid-devel
RPM_DEPENDS += mbedtls-devel

ifeq ($(OS_ID),fedora)
	RPM_DEPENDS += dnf-utils
	RPM_DEPENDS += subunit subunit-devel
	RPM_DEPENDS += compat-openssl10-devel
	RPM_DEPENDS += python3-devel  # needed for python3 -m pip install psutil
	RPM_DEPENDS += python3-ply  # for vppapigen
	RPM_DEPENDS += python3-virtualenv python3-jsonschema
	RPM_DEPENDS += cmake
	RPM_DEPENDS_GROUPS = 'C Development Tools and Libraries'
else ifeq ($(OS_ID)-$(OS_VERSION_ID),centos-8)
	RPM_DEPENDS += yum-utils
	RPM_DEPENDS += compat-openssl10
	RPM_DEPENDS += python36-devel python3-ply
	RPM_DEPENDS += python3-virtualenv python3-jsonschema
	RPM_DEPENDS += cmake
	RPM_DEPENDS_GROUPS = 'Development Tools'
else
	RPM_DEPENDS += yum-utils
	RPM_DEPENDS += openssl-devel
	RPM_DEPENDS += python36-ply  # for vppapigen
	RPM_DEPENDS += python3-devel python3-pip
	RPM_DEPENDS += python-virtualenv python36-jsonschema
	RPM_DEPENDS += devtoolset-9
	RPM_DEPENDS += cmake3
	RPM_DEPENDS_GROUPS = 'Development Tools'
endif

# +ganglia-devel if building the ganglia plugin

RPM_DEPENDS += chrpath libffi-devel rpm-build
# lowercase- replace spaces with dashes.
SUSE_NAME= $(shell grep '^NAME=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g' | sed -e 's/ /-/' | awk '{print tolower($$0)}')
SUSE_ID= $(shell grep '^VERSION_ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g' | cut -d' ' -f2)
RPM_SUSE_BUILDTOOLS_DEPS = autoconf automake ccache check-devel chrpath
RPM_SUSE_BUILDTOOLS_DEPS += clang cmake indent libtool make ninja python3-ply

RPM_SUSE_DEVEL_DEPS = glibc-devel-static libnuma-devel
RPM_SUSE_DEVEL_DEPS += libopenssl-devel openssl-devel mbedtls-devel libuuid-devel

RPM_SUSE_PYTHON_DEPS = python-devel python3-devel python-pip python3-pip
RPM_SUSE_PYTHON_DEPS += python-rpm-macros python3-rpm-macros

RPM_SUSE_PLATFORM_DEPS = distribution-release shadow rpm-build

ifeq ($(OS_ID),opensuse)
ifeq ($(SUSE_NAME),tumbleweed)
	RPM_SUSE_DEVEL_DEPS = libboost_headers1_68_0-devel-1.68.0  libboost_thread1_68_0-devel-1.68.0 gcc
	RPM_SUSE_PYTHON_DEPS += python3-ply python2-virtualenv
endif
ifeq ($(SUSE_ID),15.0)
	RPM_SUSE_DEVEL_DEPS += libboost_headers-devel libboost_thread-devel gcc
	RPM_SUSE_PYTHON_DEPS += python3-ply python2-virtualenv
else
	RPM_SUSE_DEVEL_DEPS += libboost_headers1_68_0-devel-1.68.0 gcc6
	RPM_SUSE_PYTHON_DEPS += python-virtualenv
endif
endif

ifeq ($(OS_ID),opensuse-leap)
ifeq ($(SUSE_ID),15.0)
	RPM_SUSE_DEVEL_DEPS += libboost_headers-devel libboost_thread-devel gcc git curl
	RPM_SUSE_PYTHON_DEPS += python3-ply python2-virtualenv
endif
endif

RPM_SUSE_DEPENDS += $(RPM_SUSE_BUILDTOOLS_DEPS) $(RPM_SUSE_DEVEL_DEPS) $(RPM_SUSE_PYTHON_DEPS) $(RPM_SUSE_PLATFORM_DEPS)

ifneq ($(wildcard $(STARTUP_DIR)/startup.conf),)
        STARTUP_CONF ?= $(STARTUP_DIR)/startup.conf
endif

ifeq ($(findstring y,$(UNATTENDED)),y)
CONFIRM=-y
FORCE=--force-yes
endif

TARGETS = vpp

ifneq ($(SAMPLE_PLUGIN),no)
TARGETS += sample-plugin
endif

define banner
	@echo "========================================================================"
	@echo " $(1)"
	@echo "========================================================================"
	@echo " "
endef

.PHONY: help
help:
	@echo "Make Targets:"
	@echo " install-dep[s]       - install software dependencies"
	@echo " wipe                 - wipe all products of debug build "
	@echo " wipe-release         - wipe all products of release build "
	@echo " build                - build debug binaries"
	@echo " build-release        - build release binaries"
	@echo " build-coverity       - build coverity artifacts"
	@echo " rebuild              - wipe and build debug binaries"
	@echo " rebuild-release      - wipe and build release binaries"
	@echo " run                  - run debug binary"
	@echo " run-release          - run release binary"
	@echo " debug                - run debug binary with debugger"
	@echo " debug-release        - run release binary with debugger"
	@echo " test                 - build and run tests"
	@echo " test-help            - show help on test framework"
	@echo " run-vat              - run vpp-api-test tool"
	@echo " pkg-deb              - build DEB packages"
	@echo " pkg-deb-debug        - build DEB debug packages"
	@echo " pkg-snap             - build SNAP package"
	@echo " snap-clean           - clean up snap build environment"
	@echo " vom-pkg-deb          - build vom DEB packages"
	@echo " vom-pkg-deb-debug    - build vom DEB debug packages"
	@echo " pkg-rpm              - build RPM packages"
	@echo " install-ext-dep[s]   - install external development dependencies"
	@echo " ctags                - (re)generate ctags database"
	@echo " gtags                - (re)generate gtags database"
	@echo " cscope               - (re)generate cscope database"
	@echo " compdb               - (re)generate compile_commands.json"
	@echo " checkstyle           - check coding style"
	@echo " checkstyle-commit    - check commit message format"
	@echo " checkstyle-test      - check test framework coding style"
	@echo " checkstyle-api       - check api for incompatible changes"
	@echo " fixstyle             - fix coding style"
	@echo " doxygen              - (re)generate documentation"
	@echo " bootstrap-doxygen    - setup Doxygen dependencies"
	@echo " wipe-doxygen         - wipe all generated documentation"
	@echo " checkfeaturelist     - check FEATURE.yaml according to schema"
	@echo " featurelist          - dump feature list in markdown"
	@echo " json-api-files       - (re)-generate json api files"
	@echo " json-api-files-debug - (re)-generate json api files for debug target"
	@echo " docs                 - Build the Sphinx documentation"
	@echo " docs-venv            - Build the virtual environment for the Sphinx docs"
	@echo " docs-clean           - Remove the generated files from the Sphinx docs"
	@echo ""
	@echo "Make Arguments:"
	@echo " V=[0|1]                  - set build verbosity level"
	@echo " STARTUP_CONF=<path>      - startup configuration file"
	@echo "                            (e.g. /etc/vpp/startup.conf)"
	@echo " STARTUP_DIR=<path>       - startup directory (e.g. /etc/vpp)"
	@echo "                            It also sets STARTUP_CONF if"
	@echo "                            startup.conf file is present"
	@echo " GDB=<path>               - gdb binary to use for debugging"
	@echo " PLATFORM=<name>          - target platform. default is vpp"
	@echo " TEST=<filter>            - apply filter to test set, see test-help"
	@echo " DPDK_CONFIG=<conf>       - add specified dpdk config commands to"
	@echo "                            autogenerated startup.conf"
	@echo "                            (e.g. \"no-pci\" )"
	@echo " SAMPLE_PLUGIN=yes        - in addition build/run/debug sample plugin"
	@echo " DISABLED_PLUGINS=<list>  - comma separated list of plugins which"
	@echo "                            should not be loaded"
	@echo ""
	@echo "Current Argument Values:"
	@echo " V                 = $(V)"
	@echo " STARTUP_CONF      = $(STARTUP_CONF)"
	@echo " STARTUP_DIR       = $(STARTUP_DIR)"
	@echo " GDB               = $(GDB)"
	@echo " PLATFORM          = $(PLATFORM)"
	@echo " DPDK_VERSION      = $(DPDK_VERSION)"
	@echo " DPDK_CONFIG       = $(DPDK_CONFIG)"
	@echo " SAMPLE_PLUGIN     = $(SAMPLE_PLUGIN)"
	@echo " DISABLED_PLUGINS  = $(DISABLED_PLUGINS)"

$(BR)/.deps.ok:
ifeq ($(findstring y,$(UNATTENDED)),y)
	make install-dep
endif
ifeq ($(filter ubuntu debian,$(OS_ID)),$(OS_ID))
	@MISSING=$$(apt-get install -y -qq -s $(DEB_DEPENDS) | grep "^Inst ") ; \
	if [ -n "$$MISSING" ] ; then \
	  echo "\nPlease install missing packages: \n$$MISSING\n" ; \
	  echo "by executing \"make install-dep\"\n" ; \
	  exit 1 ; \
	fi ; \
	exit 0
else ifneq ("$(wildcard /etc/redhat-release)","")
	@for i in $(RPM_DEPENDS) ; do \
	    RPM=$$(basename -s .rpm "$${i##*/}" | cut -d- -f1,2,3)  ;	\
	    MISSING+=$$(rpm -q $$RPM | grep "^package")	   ;    \
	done							   ;	\
	if [ -n "$$MISSING" ] ; then \
	  echo "Please install missing RPMs: \n$$MISSING\n" ; \
	  echo "by executing \"make install-dep\"\n" ; \
	  exit 1 ; \
	fi ; \
	exit 0
endif
	@touch $@

.PHONY: bootstrap
bootstrap:
	@echo "'make bootstrap' is not needed anymore"

.PHONY: install-dep
install-dep:
ifeq ($(filter ubuntu debian,$(OS_ID)),$(OS_ID))
ifeq ($(OS_VERSION_ID),14.04)
	@sudo -E apt-get $(CONFIRM) $(FORCE) install software-properties-common
endif
ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-8)
	@grep -q jessie-backports /etc/apt/sources.list /etc/apt/sources.list.d/* 2> /dev/null \
           || ( echo "Please install jessie-backports" ; exit 1 )
endif
	@sudo -E apt-get update
	@sudo -E apt-get $(APT_ARGS) $(CONFIRM) $(FORCE) install $(DEB_DEPENDS)
else ifneq ("$(wildcard /etc/redhat-release)","")
ifeq ($(OS_ID),rhel)
	@sudo -E yum-config-manager --enable rhel-server-rhscl-7-rpms
	@sudo -E yum groupinstall $(CONFIRM) $(RPM_DEPENDS_GROUPS)
	@sudo -E yum install $(CONFIRM) $(RPM_DEPENDS)
	@sudo -E debuginfo-install $(CONFIRM) glibc openssl-libs mbedtls-devel zlib
else ifeq ($(OS_ID)-$(OS_VERSION_ID),centos-8)
	@sudo -E dnf groupinstall $(CONFIRM) $(RPM_DEPENDS_GROUPS)
	@sudo -E dnf install $(CONFIRM) $(RPM_DEPENDS)
else ifeq ($(OS_ID),centos)
	@sudo -E yum install $(CONFIRM) centos-release-scl-rh epel-release
	@sudo -E yum groupinstall $(CONFIRM) $(RPM_DEPENDS_GROUPS)
	@sudo -E yum install $(CONFIRM) $(RPM_DEPENDS)
	@sudo -E debuginfo-install $(CONFIRM) glibc openssl-libs mbedtls-devel zlib
else ifeq ($(OS_ID),fedora)
	@sudo -E dnf groupinstall $(CONFIRM) $(RPM_DEPENDS_GROUPS)
	@sudo -E dnf install $(CONFIRM) $(RPM_DEPENDS)
	@sudo -E debuginfo-install $(CONFIRM) glibc openssl-libs mbedtls-devel zlib
endif
else ifeq ($(filter opensuse-tumbleweed,$(OS_ID)),$(OS_ID))
	@sudo -E zypper refresh
	@sudo -E zypper install -y $(RPM_SUSE_DEPENDS)
else ifeq ($(filter opensuse-leap,$(OS_ID)),$(OS_ID))
	@sudo -E zypper refresh
	@sudo -E zypper install  -y $(RPM_SUSE_DEPENDS)
else ifeq ($(filter opensuse,$(OS_ID)),$(OS_ID))
	@sudo -E zypper refresh
	@sudo -E zypper install -y $(RPM_SUSE_DEPENDS)
else
	$(error "This option currently works only on Ubuntu, Debian, RHEL, CentOS or openSUSE systems")
endif
	git config commit.template .git_commit_template.txt

.PHONY: install-deps
install-deps: install-dep

define make
	@make -C $(BR) PLATFORM=$(PLATFORM) TAG=$(1) $(2)
endef

$(BR)/scripts/.version:
ifneq ("$(wildcard /etc/redhat-release)","")
	$(shell $(BR)/scripts/version rpm-string > $(BR)/scripts/.version)
else
	$(shell $(BR)/scripts/version > $(BR)/scripts/.version)
endif

DIST_FILE = $(BR)/vpp-$(shell src/scripts/version).tar
DIST_SUBDIR = vpp-$(shell src/scripts/version|cut -f1 -d-)

.PHONY: dist
dist:
	@if git rev-parse 2> /dev/null ; then \
	    git archive \
	      --prefix=$(DIST_SUBDIR)/ \
	      --format=tar \
	      -o $(DIST_FILE) \
	    HEAD ; \
	    git describe > $(BR)/.version ; \
	else \
	    (cd .. ; tar -cf $(DIST_FILE) $(DIST_SUBDIR) --exclude=*.tar) ; \
	    src/scripts/version > $(BR)/.version ; \
	fi
	@tar --append \
	  --file $(DIST_FILE) \
	  --transform='s,.*/.version,$(DIST_SUBDIR)/src/scripts/.version,' \
	  $(BR)/.version
	@$(RM) $(BR)/.version $(DIST_FILE).xz
	@xz -v --threads=0 $(DIST_FILE)
	@$(RM) $(BR)/vpp-latest.tar.xz
	@ln -rs $(DIST_FILE).xz $(BR)/vpp-latest.tar.xz

.PHONY: build
build: $(BR)/.deps.ok
	$(call make,$(PLATFORM)_debug,$(addsuffix -install,$(TARGETS)))

.PHONY: wipedist
wipedist:
	@$(RM) $(BR)/*.tar.xz

.PHONY: wipe
wipe: wipedist test-wipe $(BR)/.deps.ok
	$(call make,$(PLATFORM)_debug,$(addsuffix -wipe,$(TARGETS)))
	@find . -type f -name "*.api.json" ! -path "./test/*" -exec rm {} \;

.PHONY: rebuild
rebuild: wipe build

.PHONY: build-release
build-release: $(BR)/.deps.ok
	$(call make,$(PLATFORM),$(addsuffix -install,$(TARGETS)))

.PHONY: wipe-release
wipe-release: test-wipe $(BR)/.deps.ok
	$(call make,$(PLATFORM),$(addsuffix -wipe,$(TARGETS)))

.PHONY: rebuild-release
rebuild-release: wipe-release build-release

libexpand = $(subst $(subst ,, ),:,$(foreach lib,$(1),$(BR)/install-$(2)-native/vpp/$(lib)/$(3)))

export TEST_DIR ?= $(WS_ROOT)/test
export RND_SEED ?= $(shell python3 -c 'import time; print(time.time())')

define test
	$(if $(filter-out $(3),retest),make -C $(BR) PLATFORM=$(1) TAG=$(2) vpp-install,)
	$(eval libs:=lib lib64)
	make -C test \
	  VPP_BUILD_DIR=$(BR)/build-$(2)-native \
	  VPP_BIN=$(BR)/install-$(2)-native/vpp/bin/vpp \
	  VPP_PLUGIN_PATH=$(call libexpand,$(libs),$(2),vpp_plugins) \
	  VPP_TEST_PLUGIN_PATH=$(call libexpand,$(libs),$(2),vpp_api_test_plugins) \
	  VPP_INSTALL_PATH=$(BR)/install-$(2)-native/ \
	  LD_LIBRARY_PATH=$(call libexpand,$(libs),$(2),) \
	  EXTENDED_TESTS=$(EXTENDED_TESTS) \
	  PYTHON=$(PYTHON) \
	  OS_ID=$(OS_ID) \
	  RND_SEED=$(RND_SEED) \
	  CACHE_OUTPUT=$(CACHE_OUTPUT) \
	  $(3)
endef

.PHONY: test
test:
	$(call test,vpp,vpp,test)

.PHONY: test-debug
test-debug:
	$(call test,vpp,vpp_debug,test)

.PHONY: test-gcov
test-gcov:
	$(call test,vpp,vpp_gcov,test)

.PHONY: test-all
test-all:
	$(if $(filter-out $(3),retest),make -C $(BR) PLATFORM=vpp TAG=vpp vom-install,)
	$(eval EXTENDED_TESTS=yes)
	$(call test,vpp,vpp,test)

.PHONY: test-all-debug
test-all-debug:
	$(if $(filter-out $(3),retest),make -C $(BR) PLATFORM=vpp TAG=vpp_debug vom-install,)
	$(eval EXTENDED_TESTS=yes)
	$(call test,vpp,vpp_debug,test)

.PHONY: papi-wipe
papi-wipe: test-wipe-papi
	$(call banner,"This command is deprecated. Please use 'test-wipe-papi'")

.PHONY: test-wipe-papi
test-wipe-papi:
	@make -C test wipe-papi

.PHONY: test-help
test-help:
	@make -C test help

.PHONY: test-wipe
test-wipe:
	@make -C test wipe

.PHONY: test-shell
test-shell:
	$(call test,vpp,vpp,shell)

.PHONY: test-shell-debug
test-shell-debug:
	$(call test,vpp,vpp_debug,shell)

.PHONY: test-shell-gcov
test-shell-gcov:
	$(call test,vpp,vpp_gcov,shell)

.PHONY: test-dep
test-dep:
	@make -C test test-dep

.PHONY: test-doc
test-doc:
	@make -C test doc

.PHONY: test-wipe-doc
test-wipe-doc:
	@make -C test wipe-doc

.PHONY: test-cov
test-cov:
	@make -C $(BR) PLATFORM=vpp TAG=vpp_gcov vom-install
	$(eval EXTENDED_TESTS=yes)
	$(call test,vpp,vpp_gcov,cov)

.PHONY: test-wipe-cov
test-wipe-cov:
	@make -C test wipe-cov

.PHONY: test-wipe-all
test-wipe-all:
	@make -C test wipe-all

.PHONY: test-checkstyle
test-checkstyle:
	@make -C test checkstyle

.PHONY: test-refresh-deps
test-refresh-deps:
	@make -C test refresh-deps

.PHONY: retest
retest:
	$(call test,vpp,vpp,retest)

.PHONY: retest-debug
retest-debug:
	$(call test,vpp,vpp_debug,retest)

.PHONY: retest-all
retest-all:
	$(eval EXTENDED_TESTS=yes)
	$(call test,vpp,vpp,retest)

.PHONY: retest-all-debug
retest-all-debug:
	$(eval EXTENDED_TESTS=yes)
	$(call test,vpp,vpp_debug,retest)

ifeq ("$(wildcard $(STARTUP_CONF))","")
define run
	@echo "WARNING: STARTUP_CONF not defined or file doesn't exist."
	@echo "         Running with minimal startup config: $(MINIMAL_STARTUP_CONF)\n"
	@cd $(STARTUP_DIR) && \
	  $(SUDO) $(2) $(1)/vpp/bin/vpp $(MINIMAL_STARTUP_CONF)
endef
else
define run
	@cd $(STARTUP_DIR) && \
	  $(SUDO) $(2) $(1)/vpp/bin/vpp $(shell cat $(STARTUP_CONF) | sed -e 's/#.*//')
endef
endif

%.files: .FORCE
	@find . \( -name '*\.[chyS]' -o -name '*\.java' -o -name '*\.lex' \) -and \
		\( -not -path './build-root*' -o -path \
		'./build-root/build-vpp_debug-native/dpdk*' \) > $@

.FORCE:

.PHONY: run
run:
	$(call run, $(BR)/install-$(PLATFORM)_debug-native)

.PHONY: run-release
run-release:
	$(call run, $(BR)/install-$(PLATFORM)-native)

.PHONY: debug
debug:
	$(call run, $(BR)/install-$(PLATFORM)_debug-native,$(GDB) $(GDB_ARGS) --args)

.PHONY: build-coverity
build-coverity:
	$(call make,$(PLATFORM)_coverity,install-packages)

.PHONY: debug-release
debug-release:
	$(call run, $(BR)/install-$(PLATFORM)-native,$(GDB) $(GDB_ARGS) --args)

.PHONY: build-vat
build-vat:
	$(call make,$(PLATFORM)_debug,vpp-api-test-install)

.PHONY: run-vat
run-vat:
	@$(SUDO) $(BR)/install-$(PLATFORM)_debug-native/vpp/bin/vpp_api_test

.PHONY: pkg-deb
pkg-deb:
	$(call make,$(PLATFORM),vpp-package-deb)

.PHONY: pkg-snap
pkg-snap:
	cd extras/snap ;			\
        ./prep ;				\
	SNAPCRAFT_BUILD_ENVIRONMENT_MEMORY=8G 	\
	SNAPCRAFT_BUILD_ENVIRONMENT_CPU=6 	\
	snapcraft --debug

.PHONY: snap-clean
snap-clean:
	cd extras/snap ;			\
        snapcraft clean ;			\
	rm -f *.snap *.tgz

.PHONY: vom-pkg-deb
vom-pkg-deb: pkg-deb
	$(call make,$(PLATFORM),vom-package-deb)

.PHONY: pkg-deb-debug
pkg-deb-debug:
	$(call make,$(PLATFORM)_debug,vpp-package-deb)

.PHONY: vom-pkg-deb-debug
vom-pkg-deb-debug: pkg-deb-debug
	$(call make,$(PLATFORM)_debug,vom-package-deb)

.PHONY: pkg-rpm
pkg-rpm: dist
	make -C extras/rpm

.PHONY: pkg-srpm
pkg-srpm: dist
	make -C extras/rpm srpm

.PHONY: dpdk-install-dev
dpdk-install-dev:
	$(call banner,"This command is deprecated. Please use 'make install-ext-deps'")
	make -C build/external install-$(PKG)

.PHONY: install-ext-deps
install-ext-deps:
	make -C build/external install-$(PKG)

.PHONY: install-ext-dep
install-ext-dep: install-ext-deps

.PHONY: json-api-files
json-api-files:
	$(WS_ROOT)/src/tools/vppapigen/generate_json.py

.PHONY: json-api-files-debug
json-api-files-debug:
	$(WS_ROOT)/src/tools/vppapigen/generate_json.py --debug-target

.PHONY: ctags
ctags: ctags.files
	@ctags --totals --tag-relative -L $<
	@rm $<

.PHONY: gtags
gtags: ctags
	@gtags --gtagslabel=ctags

.PHONY: cscope
cscope: cscope.files
	@cscope -b -q -v

.PHONY: compdb
compdb:
	@ninja -C build-root/build-vpp_debug-native/vpp -t compdb > compile_commands.json

.PHONY: checkstyle
checkstyle: checkfeaturelist
	@build-root/scripts/checkstyle.sh

.PHONY: checkstyle-commit
checkstyle-commit:
	@extras/scripts/check_commit_msg.sh

.PHONY: checkstyle-test
checkstyle-test: test-checkstyle

.PHONY: checkstyle-all
checkstyle-all: checkstyle-commit checkstyle checkstyle-test

.PHONY: fixstyle
fixstyle:
	@build-root/scripts/checkstyle.sh --fix

.PHONY: checkstyle-api
checkstyle-api:
	@extras/scripts/crcchecker.py --check-patch

# necessary because Bug 1696324 - Update to python3.6 breaks PyYAML dependencies
# Status:	CLOSED CANTFIX
# https://bugzilla.redhat.com/show_bug.cgi?id=1696324
.PHONY: centos-pyyaml
centos-pyyaml:
ifeq ($(OS_ID)-$(OS_VERSION_ID),centos-7)
	@python3 -m pip install pyyaml
endif
ifeq ($(OS_ID)-$(OS_VERSION_ID),centos-8)
	@sudo -E yum install $(CONFIRM) python3-pyyaml
endif

.PHONY: featurelist
featurelist: centos-pyyaml
	@build-root/scripts/fts.py --all --markdown

.PHONY: checkfeaturelist
checkfeaturelist: centos-pyyaml
	@build-root/scripts/fts.py --validate --all

#
# Build the documentation
#

# Doxygen configuration and our utility scripts
export DOXY_DIR ?= $(WS_ROOT)/doxygen

define make-doxy
	@OS_ID="$(OS_ID)" make -C $(DOXY_DIR) $@
endef

.PHONY: bootstrap-doxygen
bootstrap-doxygen:
	$(call make-doxy)

.PHONY: doxygen
doxygen: bootstrap-doxygen
	$(call make-doxy)

.PHONY: wipe-doxygen
wipe-doxygen:
	$(call make-doxy)

# Sphinx Documents
export DOCS_DIR = $(WS_ROOT)/docs
export VENV_DIR = $(WS_ROOT)/sphinx_venv
export SPHINX_SCRIPTS_DIR = $(WS_ROOT)/docs/scripts

.PHONY: docs-venv
docs-venv:
	@($(SPHINX_SCRIPTS_DIR)/sphinx-make.sh venv)

.PHONY: docs
docs: $(DOCS_DIR)
	@($(SPHINX_SCRIPTS_DIR)/sphinx-make.sh html)

.PHONY: docs-clean
docs-clean:
	@rm -rf $(DOCS_DIR)/_build
	@rm -rf $(VENV_DIR)

.PHONY: pkg-verify
pkg-verify: install-dep $(BR)/.deps.ok install-ext-deps
	$(call banner,"Building for PLATFORM=vpp using gcc")
	@make -C build-root PLATFORM=vpp TAG=vpp wipe-all install-packages
	$(call banner,"Building sample-plugin")
	@make -C build-root PLATFORM=vpp TAG=vpp sample-plugin-install
	$(call banner,"Building libmemif")
	@make -C build-root PLATFORM=vpp TAG=vpp libmemif-install
	$(call banner,"Building VOM")
	@make -C build-root PLATFORM=vpp TAG=vpp vom-install
	$(call banner,"Building $(PKG) packages")
	@make pkg-$(PKG)
ifeq ($(OS_ID),ubuntu)
	$(call banner,"Building VOM $(PKG) package")
	@make vom-pkg-deb
endif

MAKE_VERIFY_GATE_OS ?= ubuntu-18.04
.PHONY: verify
verify: pkg-verify
ifeq ($(OS_ID)-$(OS_VERSION_ID),$(MAKE_VERIFY_GATE_OS))
	$(call banner,"Testing vppapigen")
	@src/tools/vppapigen/test_vppapigen.py
	$(call banner,"Running tests")
	@make COMPRESS_FAILED_TEST_LOGS=yes RETRIES=3 test
else
	$(call banner,"Skipping tests. Tests under 'make verify' supported on $(MAKE_VERIFY_GATE_OS)")
endif
777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659 4660 4661 4662 4663 4664 4665 4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697 4698 4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774 4775 4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798 4799 4800 4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925 4926 4927 4928 4929 4930 4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963 4964 4965 4966 4967 4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046 5047 5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063 5064 5065 5066 5067
/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * 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.
 */

#include <vlibmemory/api.h>
#include <vnet/lisp-cp/control.h>
#include <vnet/lisp-cp/packets.h>
#include <vnet/lisp-cp/lisp_msg_serdes.h>
#include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
#include <vnet/lisp-gpe/lisp_gpe_tenant.h>
#include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
#include <vnet/ethernet/arp_packet.h>
#include <vnet/ethernet/packet.h>

#include <openssl/evp.h>
#include <vnet/crypto/crypto.h>

#define MAX_VALUE_U24 0xffffff

/* mapping timer control constants (in seconds) */
#define TIME_UNTIL_REFETCH_OR_DELETE  20
#define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)

lisp_cp_main_t lisp_control_main;

u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
static void *send_map_request_thread_fn (void *arg);

typedef enum
{
  LISP_CP_INPUT_NEXT_DROP,
  LISP_CP_INPUT_N_NEXT,
} lisp_cp_input_next_t;

typedef struct
{
  u8 is_resend;
  gid_address_t seid;
  gid_address_t deid;
  u8 smr_invoked;
} map_request_args_t;

u8
vnet_lisp_get_map_request_mode (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->map_request_mode;
}

static u16
auth_data_len_by_key_id (lisp_key_type_t key_id)
{
  switch (key_id)
    {
    case HMAC_SHA_1_96:
      return SHA1_AUTH_DATA_LEN;
    case HMAC_SHA_256_128:
      return SHA256_AUTH_DATA_LEN;
    default:
      clib_warning ("unsupported key type: %d!", key_id);
      return (u16) ~ 0;
    }
  return (u16) ~ 0;
}

static int
queue_map_request (gid_address_t * seid, gid_address_t * deid,
		   u8 smr_invoked, u8 is_resend);

ip_interface_address_t *
ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
					  u32 sw_if_index, u8 loop)
{
  vnet_main_t *vnm = vnet_get_main ();
  vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
  if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
    sw_if_index = swif->unnumbered_sw_if_index;
  u32 ia =
    (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
    vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
    (u32) ~ 0;
  return pool_elt_at_index ((lm)->if_address_pool, ia);
}

void *
ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
				u8 version)
{
  ip_interface_address_t *ia;

  ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
  if (!ia)
    return 0;
  return ip_interface_address_get_address (lm, ia);
}

int
ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
				   u8 version, ip_address_t * result)
{
  ip_lookup_main_t *lm;
  void *addr;

  lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
  addr = ip_interface_get_first_address (lm, sw_if_index, version);
  if (!addr)
    return 0;

  ip_address_set (result, addr, version);
  return 1;
}

/**
 * convert from a LISP address to a FIB prefix
 */
void
ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
{
  if (addr->version == IP4)
    {
      prefix->fp_len = 32;
      prefix->fp_proto = FIB_PROTOCOL_IP4;
      clib_memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
      memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
    }
  else
    {
      prefix->fp_len = 128;
      prefix->fp_proto = FIB_PROTOCOL_IP6;
      memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
    }
}

/**
 * convert from a LISP to a FIB prefix
 */
void
ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
			 fib_prefix_t * fib_prefix)
{
  ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
  fib_prefix->fp_len = ip_prefix->len;
}

/**
 * Find the sw_if_index of the interface that would be used to egress towards
 * dst.
 */
u32
ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
{
  fib_node_index_t fei;
  fib_prefix_t prefix;

  ip_address_to_fib_prefix (dst, &prefix);

  fei = fib_table_lookup (0, &prefix);

  return (fib_entry_get_resolving_interface (fei));
}

/**
 * Find first IP of the interface that would be used to egress towards dst.
 * Returns 1 if the address is found 0 otherwise.
 */
int
ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
				    ip_address_t * result)
{
  u32 si;
  ip_lookup_main_t *lm;
  void *addr = 0;
  u8 ipver;

  ASSERT (result != 0);

  ipver = ip_addr_version (dst);

  lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
  si = ip_fib_get_egress_iface_for_dst (lcm, dst);

  if ((u32) ~ 0 == si)
    return 0;

  /* find the first ip address */
  addr = ip_interface_get_first_address (lm, si, ipver);
  if (0 == addr)
    return 0;

  ip_address_set (result, addr, ipver);
  return 1;
}

static int
dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
		  u8 with_default_route)
{
  uword *dp_table;

  if (!is_l2)
    {
      dp_table = hash_get (lcm->table_id_by_vni, vni);

      if (!dp_table)
	{
	  clib_warning ("vni %d not associated to a vrf!", vni);
	  return VNET_API_ERROR_INVALID_VALUE;
	}
    }
  else
    {
      dp_table = hash_get (lcm->bd_id_by_vni, vni);
      if (!dp_table)
	{
	  clib_warning ("vni %d not associated to a bridge domain!", vni);
	  return VNET_API_ERROR_INVALID_VALUE;
	}
    }

  /* enable/disable data-plane interface */
  if (is_add)
    {
      if (is_l2)
	lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
      else
	lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
					      with_default_route);
    }
  else
    {
      if (is_l2)
	lisp_gpe_tenant_l2_iface_unlock (vni);
      else
	lisp_gpe_tenant_l3_iface_unlock (vni);
    }

  return 0;
}

static void
dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
{
  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
  fwd_entry_t *fe = 0;
  uword *feip = 0;
  clib_memset (a, 0, sizeof (*a));

  feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
  if (!feip)
    return;

  fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);

  /* delete dp fwd entry */
  u32 sw_if_index;
  a->is_add = 0;
  a->locator_pairs = fe->locator_pairs;
  a->vni = gid_address_vni (&fe->reid);
  gid_address_copy (&a->rmt_eid, &fe->reid);
  if (fe->is_src_dst)
    gid_address_copy (&a->lcl_eid, &fe->leid);

  vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
  vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);

  /* delete entry in fwd table */
  hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
  vec_free (fe->locator_pairs);
  pool_put (lcm->fwd_entry_pool, fe);
}

/**
 * Finds first remote locator with best (lowest) priority that has a local
 * peer locator with an underlying route to it.
 *
 */
static u32
get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
		   mapping_t * rmt_map, locator_pair_t ** locator_pairs)
{
  u32 i, limitp = 0, li, found = 0, esi;
  locator_set_t *rmt_ls, *lcl_ls;
  ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
  locator_t *lp, *rmt = 0;
  uword *checked = 0;
  locator_pair_t pair;

  rmt_ls =
    pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
  lcl_ls =
    pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);

  if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
    return 0;

  while (1)
    {
      rmt = 0;

      /* find unvisited remote locator with best priority */
      for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
	{
	  if (0 != hash_get (checked, i))
	    continue;

	  li = vec_elt (rmt_ls->locator_indices, i);
	  lp = pool_elt_at_index (lcm->locator_pool, li);

	  /* we don't support non-IP locators for now */
	  if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
	    continue;

	  if ((found && lp->priority == limitp)
	      || (!found && lp->priority >= limitp))
	    {
	      rmt = lp;

	      /* don't search for locators with lower priority and don't
	       * check this locator again*/
	      limitp = lp->priority;
	      hash_set (checked, i, 1);
	      break;
	    }
	}
      /* check if a local locator with a route to remote locator exists */
      if (rmt != 0)
	{
	  /* find egress sw_if_index for rmt locator */
	  esi =
	    ip_fib_get_egress_iface_for_dst (lcm,
					     &gid_address_ip (&rmt->address));
	  if ((u32) ~ 0 == esi)
	    continue;

	  for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
	    {
	      li = vec_elt (lcl_ls->locator_indices, i);
	      locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);

	      /* found local locator with the needed sw_if_index */
	      if (sl->sw_if_index == esi)
		{
		  /* and it has an address */
		  if (0 == ip_interface_get_first_ip_address (lcm,
							      sl->sw_if_index,
							      gid_address_ip_version
							      (&rmt->address),
							      lcl_addr))
		    continue;

		  clib_memset (&pair, 0, sizeof (pair));
		  ip_address_copy (&pair.rmt_loc,
				   &gid_address_ip (&rmt->address));
		  ip_address_copy (&pair.lcl_loc, lcl_addr);
		  pair.weight = rmt->weight;
		  pair.priority = rmt->priority;
		  vec_add1 (locator_pairs[0], pair);
		  found = 1;
		}
	    }
	}
      else
	break;
    }

  hash_free (checked);
  return found;
}

static void
gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
			fid_address_t * fid)
{
  ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));

  dst[0] = src[0];

  switch (fid_addr_type (fid))
    {
    case FID_ADDR_IP_PREF:
      gid_address_type (dst) = GID_ADDR_IP_PREFIX;
      gid_address_ippref (dst) = fid_addr_ippref (fid);
      break;
    case FID_ADDR_MAC:
      gid_address_type (dst) = GID_ADDR_MAC;
      mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
      break;
    default:
      clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
      break;
    }
}

u8
vnet_lisp_map_register_state_get (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->map_registering;
}

u8
vnet_lisp_rloc_probe_state_get (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->rloc_probing;
}

static void
dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
{
  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
  gid_address_t *rmt_eid, *lcl_eid;
  mapping_t *lcl_map, *rmt_map;
  u32 sw_if_index, **rmts, rmts_idx;
  uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
  fwd_entry_t *fe;
  u8 type, is_src_dst = 0;
  int rv;

  clib_memset (a, 0, sizeof (*a));

  /* remove entry if it already exists */
  feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
  if (feip)
    dp_del_fwd_entry (lcm, dst_map_index);

  /*
   * Determine local mapping and eid
   */
  if (lcm->flags & LISP_FLAG_PITR_MODE)
    {
      if (lcm->pitr_map_index != ~0)
	lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
      else
	{
	  clib_warning ("no PITR mapping configured!");
	  return;
	}
    }
  else
    lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
  lcl_eid = &lcl_map->eid;

  /*
   * Determine remote mapping and eid
   */
  rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
  rmt_eid = &rmt_map->eid;

  /*
   * Build and insert data plane forwarding entry
   */
  a->is_add = 1;

  if (MR_MODE_SRC_DST == lcm->map_request_mode)
    {
      if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
	{
	  gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
				  &gid_address_sd_dst (rmt_eid));
	  gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
				  &gid_address_sd_src (rmt_eid));
	}
      else
	{
	  gid_address_copy (&a->rmt_eid, rmt_eid);
	  gid_address_copy (&a->lcl_eid, lcl_eid);
	}
      is_src_dst = 1;
    }
  else
    gid_address_copy (&a->rmt_eid, rmt_eid);

  a->vni = gid_address_vni (&a->rmt_eid);
  a->is_src_dst = is_src_dst;

  /* get vrf or bd_index associated to vni */
  type = gid_address_type (&a->rmt_eid);
  if (GID_ADDR_IP_PREFIX == type)
    {
      dpid = hash_get (lcm->table_id_by_vni, a->vni);
      if (!dpid)
	{
	  clib_warning ("vni %d not associated to a vrf!", a->vni);
	  return;
	}
      a->table_id = dpid[0];
    }
  else if (GID_ADDR_MAC == type)
    {
      dpid = hash_get (lcm->bd_id_by_vni, a->vni);
      if (!dpid)
	{
	  clib_warning ("vni %d not associated to a bridge domain !", a->vni);
	  return;
	}
      a->bd_id = dpid[0];
    }

  /* find best locator pair that 1) verifies LISP policy 2) are connected */
  rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);

  /* Either rmt mapping is negative or we can't find underlay path.
   * Try again with petr if configured */
  if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
    {
      rmt_map = lisp_get_petr_mapping (lcm);
      rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
    }

  /* negative entry */
  if (rv == 0)
    {
      a->is_negative = 1;
      a->action = rmt_map->action;
    }

  rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
  if (rv)
    {
      if (a->locator_pairs)
	vec_free (a->locator_pairs);
      return;
    }

  /* add tunnel to fwd entry table */
  pool_get (lcm->fwd_entry_pool, fe);
  vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);

  fe->locator_pairs = a->locator_pairs;
  gid_address_copy (&fe->reid, &a->rmt_eid);

  if (is_src_dst)
    gid_address_copy (&fe->leid, &a->lcl_eid);
  else
    gid_address_copy (&fe->leid, lcl_eid);

  fe->is_src_dst = is_src_dst;
  hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
	    fe - lcm->fwd_entry_pool);

  /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
  rmts_stored_idxp =
    hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
  if (!rmts_stored_idxp)
    {
      pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
      clib_memset (rmts, 0, sizeof (*rmts));
      rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
      hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
    }
  else
    {
      rmts_idx = (u32) (*rmts_stored_idxp);
      rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
    }
  vec_add1 (rmts[0], dst_map_index);
}

typedef struct
{
  u32 si;
  u32 di;
} fwd_entry_mt_arg_t;

static void *
dp_add_fwd_entry_thread_fn (void *arg)
{
  fwd_entry_mt_arg_t *a = arg;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  dp_add_fwd_entry (lcm, a->si, a->di);
  return 0;
}

static int
dp_add_fwd_entry_from_mt (u32 si, u32 di)
{
  fwd_entry_mt_arg_t a;

  clib_memset (&a, 0, sizeof (a));
  a.si = si;
  a.di = di;

  vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
			       (u8 *) & a, sizeof (a));
  return 0;
}

/**
 * Returns vector of adjacencies.
 *
 * The caller must free the vector returned by this function.
 *
 * @param vni virtual network identifier
 * @return vector of adjacencies
 */
lisp_adjacency_t *
vnet_lisp_adjacencies_get_by_vni (u32 vni)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  fwd_entry_t *fwd;
  lisp_adjacency_t *adjs = 0, adj;

  /* *INDENT-OFF* */
  pool_foreach(fwd, lcm->fwd_entry_pool,
  ({
    if (gid_address_vni (&fwd->reid) != vni)
      continue;

    gid_address_copy (&adj.reid, &fwd->reid);
    gid_address_copy (&adj.leid, &fwd->leid);
    vec_add1 (adjs, adj);
  }));
  /* *INDENT-ON* */

  return adjs;
}

static lisp_msmr_t *
get_map_server (ip_address_t * a)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_msmr_t *m;

  vec_foreach (m, lcm->map_servers)
  {
    if (!ip_address_cmp (&m->address, a))
      {
	return m;
      }
  }
  return 0;
}

static lisp_msmr_t *
get_map_resolver (ip_address_t * a)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_msmr_t *m;

  vec_foreach (m, lcm->map_resolvers)
  {
    if (!ip_address_cmp (&m->address, a))
      {
	return m;
      }
  }
  return 0;
}

int
vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
{
  u32 i;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_msmr_t _ms, *ms = &_ms;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (is_add)
    {
      if (get_map_server (addr))
	{
	  clib_warning ("map-server %U already exists!", format_ip_address,
			addr);
	  return -1;
	}

      clib_memset (ms, 0, sizeof (*ms));
      ip_address_copy (&ms->address, addr);
      vec_add1 (lcm->map_servers, ms[0]);

      if (vec_len (lcm->map_servers) == 1)
	lcm->do_map_server_election = 1;
    }
  else
    {
      for (i = 0; i < vec_len (lcm->map_servers); i++)
	{
	  ms = vec_elt_at_index (lcm->map_servers, i);
	  if (!ip_address_cmp (&ms->address, addr))
	    {
	      if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
		lcm->do_map_server_election = 1;

	      vec_del1 (lcm->map_servers, i);
	      break;
	    }
	}
    }

  return 0;
}

/**
 * Add/remove mapping to/from map-cache. Overwriting not allowed.
 */
int
vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
			     u32 * map_index_result)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 mi, *map_indexp, map_index, i;
  u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
  uword *rmts_idxp;
  mapping_t *m, *old_map;
  u32 **eid_indexes;

  if (gid_address_type (&a->eid) == GID_ADDR_NSH)
    {
      if (gid_address_vni (&a->eid) != 0)
	{
	  clib_warning ("Supported only default VNI for NSH!");
	  return VNET_API_ERROR_INVALID_ARGUMENT;
	}
      if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
	{
	  clib_warning ("SPI is greater than 24bit!");
	  return VNET_API_ERROR_INVALID_ARGUMENT;
	}
    }

  mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
  old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
  if (a->is_add)
    {
      /* TODO check if overwriting and take appropriate actions */
      if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
	{
	  clib_warning ("eid %U found in the eid-table", format_gid_address,
			&a->eid);
	  return VNET_API_ERROR_VALUE_EXIST;
	}

      pool_get (lcm->mapping_pool, m);
      gid_address_copy (&m->eid, &a->eid);
      m->locator_set_index = a->locator_set_index;
      m->ttl = a->ttl;
      m->action = a->action;
      m->local = a->local;
      m->is_static = a->is_static;
      m->key = vec_dup (a->key);
      m->key_id = a->key_id;
      m->authoritative = a->authoritative;

      map_index = m - lcm->mapping_pool;
      gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
			      1);

      if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
	{
	  clib_warning ("Locator set with index %d doesn't exist",
			a->locator_set_index);
	  return VNET_API_ERROR_INVALID_VALUE;
	}

      /* add eid to list of eids supported by locator-set */
      vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
      eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
				      a->locator_set_index);
      vec_add1 (eid_indexes[0], map_index);

      if (a->local)
	{
	  /* mark as local */
	  vec_add1 (lcm->local_mappings_indexes, map_index);
	}
      map_index_result[0] = map_index;
    }
  else
    {
      if (mi == GID_LOOKUP_MISS)
	{
	  clib_warning ("eid %U not found in the eid-table",
			format_gid_address, &a->eid);
	  return VNET_API_ERROR_INVALID_VALUE;
	}

      /* clear locator-set to eids binding */
      eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
				      a->locator_set_index);
      for (i = 0; i < vec_len (eid_indexes[0]); i++)
	{
	  map_indexp = vec_elt_at_index (eid_indexes[0], i);
	  if (map_indexp[0] == mi)
	    break;
	}
      vec_del1 (eid_indexes[0], i);

      /* remove local mark if needed */
      m = pool_elt_at_index (lcm->mapping_pool, mi);
      if (m->local)
	{
	  /* Remove adjacencies associated with the local mapping */
	  rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
	  if (rmts_idxp)
	    {
	      rmts =
		pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
	      vec_foreach (remote_idxp, rmts[0])
	      {
		dp_del_fwd_entry (lcm, remote_idxp[0]);
	      }
	      vec_free (rmts[0]);
	      pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
	      hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
	    }

	  u32 k, *lm_indexp;
	  for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
	    {
	      lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
	      if (lm_indexp[0] == mi)
		break;
	    }
	  vec_del1 (lcm->local_mappings_indexes, k);
	}
      else
	{
	  /* Remove remote (if present) from the vectors of lcl-to-rmts
	   * TODO: Address this in a more efficient way.
	   */
	  /* *INDENT-OFF* */
	  pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
	  ({
	    vec_foreach_index (rmts_itr, rmts[0])
	    {
	      remote_idx = vec_elt (rmts[0], rmts_itr);
	      if (mi == remote_idx)
		{
		  vec_del1 (rmts[0], rmts_itr);
		  break;
		}
	    }
	  }));
	  /* *INDENT-ON* */
	}

      /* remove mapping from dictionary */
      gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
      gid_address_free (&m->eid);
      pool_put_index (lcm->mapping_pool, mi);
    }

  return 0;
}

/**
 *  Add/update/delete mapping to/in/from map-cache.
 */
int
vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
				 u32 * map_index_result)
{
  uword *dp_table = 0;
  u32 vni;
  u8 type;

  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  vni = gid_address_vni (&a->eid);
  type = gid_address_type (&a->eid);
  if (GID_ADDR_IP_PREFIX == type)
    dp_table = hash_get (lcm->table_id_by_vni, vni);
  else if (GID_ADDR_MAC == type)
    dp_table = hash_get (lcm->bd_id_by_vni, vni);

  if (!dp_table && GID_ADDR_NSH != type)
    {
      clib_warning ("vni %d not associated to a %s!", vni,
		    GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
      return VNET_API_ERROR_INVALID_VALUE;
    }

  /* store/remove mapping from map-cache */
  return vnet_lisp_map_cache_add_del (a, map_index_result);
}

static void
add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
{
  u32 **ht = arg;
  u32 version = (u32) kvp->key[0];
  if (IP6 == version)
    return;

  u32 bd = (u32) (kvp->key[0] >> 32);
  hash_set (ht[0], bd, 0);
}

u32 *
vnet_lisp_l2_arp_bds_get (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 *bds = 0;

  gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
				     add_l2_arp_bd, &bds);
  return bds;
}

static void
add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
{
  u32 **ht = arg;
  u32 version = (u32) kvp->key[0];
  if (IP4 == version)
    return;

  u32 bd = (u32) (kvp->key[0] >> 32);
  hash_set (ht[0], bd, 0);
}

u32 *
vnet_lisp_ndp_bds_get (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 *bds = 0;

  gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
				     add_ndp_bd, &bds);
  return bds;
}

typedef struct
{
  void *vector;
  u32 bd;
} lisp_add_l2_arp_ndp_args_t;

static void
add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
{
  lisp_add_l2_arp_ndp_args_t *a = arg;
  lisp_api_l2_arp_entry_t **vector = a->vector, e;

  u32 version = (u32) kvp->key[0];
  if (IP6 == version)
    return;

  u32 bd = (u32) (kvp->key[0] >> 32);

  if (bd == a->bd)
    {
      mac_copy (e.mac, (void *) &kvp->value);
      e.ip4 = (u32) kvp->key[1];
      vec_add1 (vector[0], e);
    }
}

lisp_api_l2_arp_entry_t *
vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
{
  lisp_api_l2_arp_entry_t *entries = 0;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_add_l2_arp_ndp_args_t a;

  a.vector = &entries;
  a.bd = bd;

  gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
				     add_l2_arp_entry, &a);
  return entries;
}

static void
add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
{
  lisp_add_l2_arp_ndp_args_t *a = arg;
  lisp_api_ndp_entry_t **vector = a->vector, e;

  u32 version = (u32) kvp->key[0];
  if (IP4 == version)
    return;

  u32 bd = (u32) (kvp->key[0] >> 32);

  if (bd == a->bd)
    {
      mac_copy (e.mac, (void *) &kvp->value);
      clib_memcpy (e.ip6, &kvp->key[1], 16);
      vec_add1 (vector[0], e);
    }
}

lisp_api_ndp_entry_t *
vnet_lisp_ndp_entries_get_by_bd (u32 bd)
{
  lisp_api_ndp_entry_t *entries = 0;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_add_l2_arp_ndp_args_t a;

  a.vector = &entries;
  a.bd = bd;

  gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
				     add_ndp_entry, &a);
  return entries;
}

int
vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
{
  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  int rc = 0;

  u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
  if (is_add)
    {
      if (res != GID_LOOKUP_MISS_L2)
	{
	  clib_warning ("Entry %U exists in DB!", format_gid_address, key);
	  return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
	}
      u64 val = mac_to_u64 (mac);
      gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
			      1 /* is_add */ );
    }
  else
    {
      if (res == GID_LOOKUP_MISS_L2)
	{
	  clib_warning ("ONE entry %U not found - cannot delete!",
			format_gid_address, key);
	  return -1;
	}
      gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
			      0 /* is_add */ );
    }

  return rc;
}

int
vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
  vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;

  if (!is_l2 && (vni == 0 || dp_id == 0))
    {
      clib_warning ("can't add/del default vni-vrf mapping!");
      return -1;
    }

  dp_idp = hash_get (dp_table_by_vni[0], vni);
  vnip = hash_get (vni_by_dp_table[0], dp_id);

  if (is_add)
    {
      if (dp_idp || vnip)
	{
	  clib_warning ("vni %d or vrf %d already used in vrf/vni "
			"mapping!", vni, dp_id);
	  return -1;
	}
      hash_set (dp_table_by_vni[0], vni, dp_id);
      hash_set (vni_by_dp_table[0], dp_id, vni);

      /* create dp iface */
      dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
			1 /* with_default_route */ );
    }
  else
    {
      if (!dp_idp || !vnip)
	{
	  clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
			"mapping!", vni, dp_id);
	  return -1;
	}
      /* remove dp iface */
      dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ );

      hash_unset (dp_table_by_vni[0], vni);
      hash_unset (vni_by_dp_table[0], dp_id);
    }
  return 0;

}

/* return 0 if the two locator sets are identical 1 otherwise */
static u8
compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
		  locator_t * new_locators)
{
  u32 i, old_li;
  locator_t *old_loc, *new_loc;

  if (vec_len (old_ls_indexes) != vec_len (new_locators))
    return 1;

  for (i = 0; i < vec_len (new_locators); i++)
    {
      old_li = vec_elt (old_ls_indexes, i);
      old_loc = pool_elt_at_index (lcm->locator_pool, old_li);

      new_loc = vec_elt_at_index (new_locators, i);

      if (locator_cmp (old_loc, new_loc))
	return 1;
    }
  return 0;
}

typedef struct
{
  u8 is_negative;
  void *lcm;
  gid_address_t *eids_to_be_deleted;
} remove_mapping_args_t;

/**
 * Callback invoked when a sub-prefix is found
 */
static void
remove_mapping_if_needed (u32 mi, void *arg)
{
  u8 delete = 0;
  remove_mapping_args_t *a = arg;
  lisp_cp_main_t *lcm = a->lcm;
  mapping_t *m;
  locator_set_t *ls;

  m = pool_elt_at_index (lcm->mapping_pool, mi);
  if (!m)
    return;

  ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);

  if (a->is_negative)
    {
      if (0 != vec_len (ls->locator_indices))
	delete = 1;
    }
  else
    {
      if (0 == vec_len (ls->locator_indices))
	delete = 1;
    }

  if (delete)
    vec_add1 (a->eids_to_be_deleted, m->eid);
}

/**
 * This function searches map cache and looks for IP prefixes that are subset
 * of the provided one. If such prefix is found depending on 'is_negative'
 * it does follows:
 *
 * 1) if is_negative is true and found prefix points to positive mapping,
 *    then the mapping is removed
 * 2) if is_negative is false and found prefix points to negative mapping,
 *    then the mapping is removed
 */
static void
remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
				 u8 is_negative)
{
  gid_address_t *e;
  remove_mapping_args_t a;

  clib_memset (&a, 0, sizeof (a));

  /* do this only in src/dst mode ... */
  if (MR_MODE_SRC_DST != lcm->map_request_mode)
    return;

  /* ... and  only for IP prefix */
  if (GID_ADDR_SRC_DST != gid_address_type (eid)
      || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
    return;

  a.is_negative = is_negative;
  a.lcm = lcm;

  gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
			      remove_mapping_if_needed, &a);

  vec_foreach (e, a.eids_to_be_deleted)
  {
    vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;

    clib_memset (adj_args, 0, sizeof (adj_args[0]));
    gid_address_copy (&adj_args->reid, e);
    adj_args->is_add = 0;
    if (vnet_lisp_add_del_adjacency (adj_args))
      clib_warning ("failed to del adjacency!");

    vnet_lisp_del_mapping (e, NULL);
  }

  vec_free (a.eids_to_be_deleted);
}

static void
mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
{
  timing_wheel_delete (&lcm->wheel, mi);
}

static int
is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
{
  fib_node_index_t fei;
  fib_prefix_t prefix;
  fib_entry_flag_t flags;

  ip_address_to_fib_prefix (addr, &prefix);

  fei = fib_table_lookup (0, &prefix);
  flags = fib_entry_get_flags (fei);
  return (FIB_ENTRY_FLAG_LOCAL & flags);
}

/**
 * Adds/updates mapping. Does not program forwarding.
 *
 * @param a parameters of the new mapping
 * @param rlocs vector of remote locators
 * @param res_map_index index of the newly created mapping
 * @param locators_changed indicator if locators were updated in the mapping
 * @return return code
 */
int
vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
		       locator_t * rlocs,
		       u32 * res_map_index, u8 * is_updated)
{
  vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 mi, ls_index = 0, dst_map_index;
  mapping_t *old_map;
  locator_t *loc;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (res_map_index)
    res_map_index[0] = ~0;
  if (is_updated)
    is_updated[0] = 0;

  clib_memset (ls_args, 0, sizeof (ls_args[0]));

  ls_args->locators = rlocs;
  mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
  old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;

  /* check if none of the locators match locally configured address */
  vec_foreach (loc, rlocs)
  {
    ip_prefix_t *p = &gid_address_ippref (&loc->address);
    if (is_local_ip (lcm, &ip_prefix_addr (p)))
      {
	clib_warning ("RLOC %U matches a local address!",
		      format_gid_address, &loc->address);
	return VNET_API_ERROR_LISP_RLOC_LOCAL;
      }
  }

  /* overwrite: if mapping already exists, decide if locators should be
   * updated and be done */
  if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
    {
      if (!a->is_static && (old_map->is_static || old_map->local))
	{
	  /* do not overwrite local or static remote mappings */
	  clib_warning ("mapping %U rejected due to collision with local "
			"or static remote mapping!", format_gid_address,
			&a->eid);
	  return 0;
	}

      locator_set_t *old_ls;

      /* update mapping attributes */
      old_map->action = a->action;
      if (old_map->action != a->action && NULL != is_updated)
	is_updated[0] = 1;

      old_map->authoritative = a->authoritative;
      old_map->ttl = a->ttl;

      old_ls = pool_elt_at_index (lcm->locator_set_pool,
				  old_map->locator_set_index);
      if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
	{
	  /* set locator-set index to overwrite */
	  ls_args->is_add = 1;
	  ls_args->index = old_map->locator_set_index;
	  vnet_lisp_add_del_locator_set (ls_args, 0);
	  if (is_updated)
	    is_updated[0] = 1;
	}
      if (res_map_index)
	res_map_index[0] = mi;
    }
  /* new mapping */
  else
    {
      if (is_updated)
	is_updated[0] = 1;
      remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);

      ls_args->is_add = 1;
      ls_args->index = ~0;

      vnet_lisp_add_del_locator_set (ls_args, &ls_index);

      /* add mapping */
      a->is_add = 1;
      a->locator_set_index = ls_index;
      vnet_lisp_map_cache_add_del (a, &dst_map_index);

      if (res_map_index)
	res_map_index[0] = dst_map_index;
    }

  /* success */
  return 0;
}

/**
 * Removes a mapping. Does not program forwarding.
 *
 * @param eid end-host identifier
 * @param res_map_index index of the removed mapping
 * @return return code
 */
int
vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
  vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
  mapping_t *old_map;
  u32 mi;

  clib_memset (ls_args, 0, sizeof (ls_args[0]));
  clib_memset (m_args, 0, sizeof (m_args[0]));
  if (res_map_index)
    res_map_index[0] = ~0;

  mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
  old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;

  if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
    {
      clib_warning ("cannot delete mapping for eid %U",
		    format_gid_address, eid);
      return -1;
    }

  m_args->is_add = 0;
  gid_address_copy (&m_args->eid, eid);
  m_args->locator_set_index = old_map->locator_set_index;

  /* delete mapping associated from map-cache */
  vnet_lisp_map_cache_add_del (m_args, 0);

  ls_args->is_add = 0;
  ls_args->index = old_map->locator_set_index;

  /* delete locator set */
  vnet_lisp_add_del_locator_set (ls_args, 0);

  /* delete timer associated to the mapping if any */
  if (old_map->timer_set)
    mapping_delete_timer (lcm, mi);

  /* return old mapping index */
  if (res_map_index)
    res_map_index[0] = mi;

  /* success */
  return 0;
}

int
vnet_lisp_clear_all_remote_adjacencies (void)
{
  int rv = 0;
  u32 mi, *map_indices = 0, *map_indexp;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
  vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;

  /* *INDENT-OFF* */
  pool_foreach_index (mi, lcm->mapping_pool,
  ({
    vec_add1 (map_indices, mi);
  }));
  /* *INDENT-ON* */

  vec_foreach (map_indexp, map_indices)
  {
    mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
    if (!map->local)
      {
	dp_del_fwd_entry (lcm, map_indexp[0]);

	dm_args->is_add = 0;
	gid_address_copy (&dm_args->eid, &map->eid);
	dm_args->locator_set_index = map->locator_set_index;

	/* delete mapping associated to fwd entry */
	vnet_lisp_map_cache_add_del (dm_args, 0);

	ls->is_add = 0;
	ls->local = 0;
	ls->index = map->locator_set_index;
	/* delete locator set */
	rv = vnet_lisp_add_del_locator_set (ls, 0);
	if (rv != 0)
	  goto cleanup;
      }
  }

cleanup:
  if (map_indices)
    vec_free (map_indices);
  return rv;
}

/**
 * Adds adjacency or removes forwarding entry associated to remote mapping.
 * Note that adjacencies are not stored, they only result in forwarding entries
 * being created.
 */
int
vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
{
  lisp_cp_main_t *lcm = &lisp_control_main;
  u32 local_mi, remote_mi = ~0;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
					&a->reid, &a->leid);
  if (GID_LOOKUP_MISS == remote_mi)
    {
      clib_warning ("Remote eid %U not found. Cannot add adjacency!",
		    format_gid_address, &a->reid);

      return -1;
    }

  if (a->is_add)
    {
      /* check if source eid has an associated mapping. If pitr mode is on,
       * just use the pitr's mapping */
      if (lcm->flags & LISP_FLAG_PITR_MODE)
	{
	  if (lcm->pitr_map_index != ~0)
	    {
	      local_mi = lcm->pitr_map_index;
	    }
	  else
	    {
	      /* PITR mode is on, but no mapping is configured */
	      return -1;
	    }
	}
      else
	{
	  if (gid_address_type (&a->reid) == GID_ADDR_NSH)
	    {
	      if (lcm->nsh_map_index == ~0)
		local_mi = GID_LOOKUP_MISS;
	      else
		local_mi = lcm->nsh_map_index;
	    }
	  else
	    {
	      local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
						&a->leid);
	    }
	}

      if (GID_LOOKUP_MISS == local_mi)
	{
	  clib_warning ("Local eid %U not found. Cannot add adjacency!",
			format_gid_address, &a->leid);

	  return -1;
	}

      /* update forwarding */
      dp_add_fwd_entry (lcm, local_mi, remote_mi);
    }
  else
    dp_del_fwd_entry (lcm, remote_mi);

  return 0;
}

int
vnet_lisp_set_map_request_mode (u8 mode)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (mode >= _MR_MODE_MAX)
    {
      clib_warning ("Invalid LISP map request mode %d!", mode);
      return VNET_API_ERROR_INVALID_ARGUMENT;
    }

  lcm->map_request_mode = mode;
  return 0;
}

int
vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
  u32 locator_set_index = ~0;
  mapping_t *m;
  uword *p;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (is_add)
    {
      if (lcm->nsh_map_index == (u32) ~ 0)
	{
	  p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
	  if (!p)
	    {
	      clib_warning ("locator-set %v doesn't exist", locator_set_name);
	      return -1;
	    }
	  locator_set_index = p[0];

	  pool_get (lcm->mapping_pool, m);
	  clib_memset (m, 0, sizeof *m);
	  m->locator_set_index = locator_set_index;
	  m->local = 1;
	  m->nsh_set = 1;
	  lcm->nsh_map_index = m - lcm->mapping_pool;

	  if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
	    return -1;
	}
    }
  else
    {
      if (lcm->nsh_map_index != (u32) ~ 0)
	{
	  /* remove NSH mapping */
	  pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
	  lcm->nsh_map_index = ~0;
	  vnet_lisp_gpe_del_nsh_iface (lgm);
	}
    }
  return 0;
}

int
vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 locator_set_index = ~0;
  mapping_t *m;
  uword *p;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
  if (!p)
    {
      clib_warning ("locator-set %v doesn't exist", locator_set_name);
      return -1;
    }
  locator_set_index = p[0];

  if (is_add)
    {
      pool_get (lcm->mapping_pool, m);
      m->locator_set_index = locator_set_index;
      m->local = 1;
      m->pitr_set = 1;
      lcm->pitr_map_index = m - lcm->mapping_pool;
    }
  else
    {
      /* remove pitr mapping */
      pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
      lcm->pitr_map_index = ~0;
    }
  return 0;
}

int
vnet_lisp_map_register_fallback_threshold_set (u32 value)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  if (0 == value)
    {
      return VNET_API_ERROR_INVALID_ARGUMENT;
    }

  lcm->max_expired_map_registers = value;
  return 0;
}

u32
vnet_lisp_map_register_fallback_threshold_get (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->max_expired_map_registers;
}

/**
 * Configure Proxy-ETR
 *
 * @param ip PETR's IP address
 * @param is_add Flag that indicates if this is an addition or removal
 *
 * return 0 on success
 */
int
vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 ls_index = ~0;
  mapping_t *m;
  vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
  locator_t loc;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  clib_memset (ls_args, 0, sizeof (*ls_args));

  if (is_add)
    {
      /* Create dummy petr locator-set */
      clib_memset (&loc, 0, sizeof (loc));
      gid_address_from_ip (&loc.address, ip);
      loc.priority = 1;
      loc.state = loc.weight = 1;
      loc.local = 0;

      ls_args->is_add = 1;
      ls_args->index = ~0;
      vec_add1 (ls_args->locators, loc);
      vnet_lisp_add_del_locator_set (ls_args, &ls_index);

      /* Add petr mapping */
      pool_get (lcm->mapping_pool, m);
      m->locator_set_index = ls_index;
      lcm->petr_map_index = m - lcm->mapping_pool;

      /* Enable use-petr */
      lcm->flags |= LISP_FLAG_USE_PETR;
    }
  else
    {
      m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);

      /* Remove petr locator */
      ls_args->is_add = 0;
      ls_args->index = m->locator_set_index;
      vnet_lisp_add_del_locator_set (ls_args, 0);

      /* Remove petr mapping */
      pool_put_index (lcm->mapping_pool, lcm->petr_map_index);

      /* Disable use-petr */
      lcm->flags &= ~LISP_FLAG_USE_PETR;
      lcm->petr_map_index = ~0;
    }
  return 0;
}

/* cleans locator to locator-set data and removes locators not part of
 * any locator-set */
static void
clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
{
  u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
  locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
  for (i = 0; i < vec_len (ls->locator_indices); i++)
    {
      loc_indexp = vec_elt_at_index (ls->locator_indices, i);
      ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
				     loc_indexp[0]);
      for (j = 0; j < vec_len (ls_indexes[0]); j++)
	{
	  ls_indexp = vec_elt_at_index (ls_indexes[0], j);
	  if (ls_indexp[0] == lsi)
	    break;
	}

      /* delete index for removed locator-set */
      vec_del1 (ls_indexes[0], j);

      /* delete locator if it's part of no locator-set */
      if (vec_len (ls_indexes[0]) == 0)
	{
	  pool_put_index (lcm->locator_pool, loc_indexp[0]);
	  vec_add1 (to_be_deleted, i);
	}
    }

  if (to_be_deleted)
    {
      for (i = 0; i < vec_len (to_be_deleted); i++)
	{
	  loc_indexp = vec_elt_at_index (to_be_deleted, i);
	  vec_del1 (ls->locator_indices, loc_indexp[0]);
	}
      vec_free (to_be_deleted);
    }
}

static inline uword *
get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  ASSERT (a != NULL);
  ASSERT (p != NULL);

  /* find locator-set */
  if (a->local)
    {
      ASSERT (a->name);
      p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
    }
  else
    {
      *p = a->index;
    }

  return p;
}

static inline int
is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
			   locator_t * loc)
{
  locator_t *itloc;
  u32 *locit;

  ASSERT (ls != NULL);
  ASSERT (loc != NULL);

  vec_foreach (locit, ls->locator_indices)
  {
    itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
    if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
	(!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
      {
	clib_warning ("Duplicate locator");
	return VNET_API_ERROR_VALUE_EXIST;
      }
  }

  return 0;
}

static void
update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
				 u32 mapping_index, u8 remove_only)
{
  fwd_entry_t *fwd;
  mapping_t *map;
  uword *fei = 0, *rmts_idxp = 0;
  u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
  vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
  clib_memset (a, 0, sizeof (*a));

  map = pool_elt_at_index (lcm->mapping_pool, mapping_index);

  if (map->local)
    {
      rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
      if (rmts_idxp)
	{
	  rmts =
	    pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
	  rmts_copy = vec_dup (rmts[0]);

	  vec_foreach (remote_idxp, rmts_copy)
	  {
	    fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
	    if (!fei)
	      continue;

	    fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
	    a->is_add = 0;
	    gid_address_copy (&a->leid, &fwd->leid);
	    gid_address_copy (&a->reid, &fwd->reid);
	    vnet_lisp_add_del_adjacency (a);

	    if (!remove_only)
	      {
		a->is_add = 1;
		vnet_lisp_add_del_adjacency (a);
	      }
	  }
	  vec_free (rmts_copy);
	}
    }
  else
    {
      fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
      if (!fei)
	return;

      fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
      a->is_add = 0;
      gid_address_copy (&a->leid, &fwd->leid);
      gid_address_copy (&a->reid, &fwd->reid);
      vnet_lisp_add_del_adjacency (a);

      if (!remove_only)
	{
	  a->is_add = 1;
	  vnet_lisp_add_del_adjacency (a);
	}
    }
}

static void
update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
				   u32 ls_index, u8 remove_only)
{
  u32 i, *map_indexp;
  u32 **eid_indexes;

  if (vec_len (lcm->locator_set_to_eids) <= ls_index)
    return;

  eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);

  for (i = 0; i < vec_len (eid_indexes[0]); i++)
    {
      map_indexp = vec_elt_at_index (eid_indexes[0], i);
      update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
    }
}

static inline void
remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
				 u32 ls_index, u32 loc_id)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 **ls_indexes = NULL;

  ASSERT (ls != NULL);
  ASSERT (locit != NULL);

  ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
  pool_put_index (lcm->locator_pool, locit[0]);
  vec_del1 (ls->locator_indices, loc_id);
  vec_del1 (ls_indexes[0], ls_index);
}

int
vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
			   locator_set_t * ls, u32 * ls_result)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  locator_t *loc = NULL, *itloc = NULL;
  uword _p = (u32) ~ 0, *p = &_p;
  u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
  u32 loc_id = ~0;
  int ret = 0;

  ASSERT (a != NULL);

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  p = get_locator_set_index (a, p);
  if (!p)
    {
      clib_warning ("locator-set %v doesn't exist", a->name);
      return VNET_API_ERROR_INVALID_ARGUMENT;
    }

  if (ls == 0)
    {
      ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
      if (!ls)
	{
	  clib_warning ("locator-set %d to be overwritten doesn't exist!",
			p[0]);
	  return VNET_API_ERROR_INVALID_ARGUMENT;
	}
    }

  if (a->is_add)
    {
      if (ls_result)
	ls_result[0] = p[0];

      /* allocate locators */
      vec_foreach (itloc, a->locators)
      {
	ret = is_locator_in_locator_set (lcm, ls, itloc);
	if (0 != ret)
	  {
	    return ret;
	  }

	pool_get (lcm->locator_pool, loc);
	loc[0] = itloc[0];
	loc_index = loc - lcm->locator_pool;

	vec_add1 (ls->locator_indices, loc_index);

	vec_validate (lcm->locator_to_locator_sets, loc_index);
	ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
				       loc_index);
	vec_add1 (ls_indexes[0], p[0]);
      }
    }
  else
    {
      ls_index = p[0];
      u8 removed;

      vec_foreach (itloc, a->locators)
      {
	removed = 0;
	loc_id = 0;
	vec_foreach (locit, ls->locator_indices)
	{
	  loc = pool_elt_at_index (lcm->locator_pool, locit[0]);

	  if (loc->local && loc->sw_if_index == itloc->sw_if_index)
	    {
	      removed = 1;
	      remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
	    }
	  if (0 == loc->local &&
	      !gid_address_cmp (&loc->address, &itloc->address))
	    {
	      removed = 1;
	      remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
	    }

	  if (removed)
	    {
	      /* update fwd entries using this locator in DP */
	      update_fwd_entries_by_locator_set (lcm, ls_index,
						 vec_len (ls->locator_indices)
						 == 0);
	    }

	  loc_id++;
	}
      }
    }

  return 0;
}

int
vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
			       u32 * ls_result)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  locator_set_t *ls;
  uword _p = (u32) ~ 0, *p = &_p;
  u32 ls_index;
  u32 **eid_indexes;
  int ret = 0;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (a->is_add)
    {
      p = get_locator_set_index (a, p);

      /* overwrite */
      if (p && p[0] != (u32) ~ 0)
	{
	  ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
	  if (!ls)
	    {
	      clib_warning ("locator-set %d to be overwritten doesn't exist!",
			    p[0]);
	      return -1;
	    }

	  /* clean locator to locator-set vectors and remove locators if
	   * they're not part of another locator-set */
	  clean_locator_to_locator_set (lcm, p[0]);

	  /* remove locator indices from locator set */
	  vec_free (ls->locator_indices);

	  ls_index = p[0];

	  if (ls_result)
	    ls_result[0] = p[0];
	}
      /* new locator-set */
      else
	{
	  pool_get (lcm->locator_set_pool, ls);
	  clib_memset (ls, 0, sizeof (*ls));
	  ls_index = ls - lcm->locator_set_pool;

	  if (a->local)
	    {
	      ls->name = vec_dup (a->name);

	      if (!lcm->locator_set_index_by_name)
		lcm->locator_set_index_by_name = hash_create_vec (
								   /* size */
								   0,
								   sizeof
								   (ls->name
								    [0]),
								   sizeof
								   (uword));
	      hash_set_mem (lcm->locator_set_index_by_name, ls->name,
			    ls_index);

	      /* mark as local locator-set */
	      vec_add1 (lcm->local_locator_set_indexes, ls_index);
	    }
	  ls->local = a->local;
	  if (ls_result)
	    ls_result[0] = ls_index;
	}

      ret = vnet_lisp_add_del_locator (a, ls, NULL);
      if (0 != ret)
	{
	  return ret;
	}
    }
  else
    {
      p = get_locator_set_index (a, p);
      if (!p)
	{
	  clib_warning ("locator-set %v doesn't exists", a->name);
	  return -1;
	}

      ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
      if (!ls)
	{
	  clib_warning ("locator-set with index %d doesn't exists", p[0]);
	  return -1;
	}

      if (lcm->mreq_itr_rlocs == p[0])
	{
	  clib_warning ("Can't delete the locator-set used to constrain "
			"the itr-rlocs in map-requests!");
	  return -1;
	}

      if (vec_len (lcm->locator_set_to_eids) != 0)
	{
	  eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
	  if (vec_len (eid_indexes[0]) != 0)
	    {
	      clib_warning
		("Can't delete a locator that supports a mapping!");
	      return -1;
	    }
	}

      /* clean locator to locator-sets data */
      clean_locator_to_locator_set (lcm, p[0]);

      if (ls->local)
	{
	  u32 it, lsi;

	  vec_foreach_index (it, lcm->local_locator_set_indexes)
	  {
	    lsi = vec_elt (lcm->local_locator_set_indexes, it);
	    if (lsi == p[0])
	      {
		vec_del1 (lcm->local_locator_set_indexes, it);
		break;
	      }
	  }
	  hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
	}
      vec_free (ls->name);
      vec_free (ls->locator_indices);
      pool_put (lcm->locator_set_pool, ls);
    }
  return 0;
}

int
vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  lcm->rloc_probing = is_enable;
  return 0;
}

int
vnet_lisp_map_register_enable_disable (u8 is_enable)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  lcm->map_registering = is_enable;
  return 0;
}

static void
lisp_cp_register_dst_port (vlib_main_t * vm)
{
  udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
			 lisp_cp_input_node.index, 1 /* is_ip4 */ );
  udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
			 lisp_cp_input_node.index, 0 /* is_ip4 */ );
}

static void
lisp_cp_unregister_dst_port (vlib_main_t * vm)
{
  udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
  udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
}

/**
 * lisp_cp_enable_l2_l3_ifaces
 *
 * Enable all l2 and l3 ifaces
 */
static void
lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
{
  u32 vni, dp_table;

  /* *INDENT-OFF* */
  hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
    dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
                     with_default_route);
  }));
  hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
    dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
                     with_default_route);
  }));
  /* *INDENT-ON* */
}

static void
lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
{
  u32 **rmts;

  /* clear interface table */
  hash_free (lcm->fwd_entry_by_mapping_index);
  pool_free (lcm->fwd_entry_pool);
  /* Clear state tracking rmt-lcl fwd entries */
  /* *INDENT-OFF* */
  pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
  {
    vec_free(rmts[0]);
  });
  /* *INDENT-ON* */
  hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
  pool_free (lcm->lcl_to_rmt_adjacencies);
}

clib_error_t *
vnet_lisp_enable_disable (u8 is_enable)
{
  clib_error_t *error = 0;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;

  a->is_en = is_enable;
  error = vnet_lisp_gpe_enable_disable (a);
  if (error)
    {
      return clib_error_return (0, "failed to %s data-plane!",
				a->is_en ? "enable" : "disable");
    }

  /* decide what to do based on mode */

  if (lcm->flags & LISP_FLAG_XTR_MODE)
    {
      if (is_enable)
	{
	  lisp_cp_register_dst_port (lcm->vlib_main);
	  lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
	}
      else
	{
	  lisp_cp_unregister_dst_port (lcm->vlib_main);
	  lisp_cp_disable_l2_l3_ifaces (lcm);
	}
    }

  if (lcm->flags & LISP_FLAG_PETR_MODE)
    {
      /* if in xTR mode, the LISP ports were already (un)registered above */
      if (!(lcm->flags & LISP_FLAG_XTR_MODE))
	{
	  if (is_enable)
	    lisp_cp_register_dst_port (lcm->vlib_main);
	  else
	    lisp_cp_unregister_dst_port (lcm->vlib_main);
	}
    }

  if (lcm->flags & LISP_FLAG_PITR_MODE)
    {
      if (is_enable)
	{
	  /* install interfaces, but no default routes */
	  lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
	}
      else
	{
	  lisp_cp_disable_l2_l3_ifaces (lcm);
	}
    }

  if (is_enable)
    vnet_lisp_create_retry_process (lcm);

  /* update global flag */
  lcm->is_enabled = is_enable;

  return 0;
}

u8
vnet_lisp_enable_disable_status (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->is_enabled;
}

int
vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 i;
  lisp_msmr_t _mr, *mr = &_mr;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (a->is_add)
    {

      if (get_map_resolver (&a->address))
	{
	  clib_warning ("map-resolver %U already exists!", format_ip_address,
			&a->address);
	  return -1;
	}

      clib_memset (mr, 0, sizeof (*mr));
      ip_address_copy (&mr->address, &a->address);
      vec_add1 (lcm->map_resolvers, *mr);

      if (vec_len (lcm->map_resolvers) == 1)
	lcm->do_map_resolver_election = 1;
    }
  else
    {
      for (i = 0; i < vec_len (lcm->map_resolvers); i++)
	{
	  mr = vec_elt_at_index (lcm->map_resolvers, i);
	  if (!ip_address_cmp (&mr->address, &a->address))
	    {
	      if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
		lcm->do_map_resolver_election = 1;

	      vec_del1 (lcm->map_resolvers, i);
	      break;
	    }
	}
    }
  return 0;
}

int
vnet_lisp_map_register_set_ttl (u32 ttl)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lcm->map_register_ttl = ttl;
  return 0;
}

u32
vnet_lisp_map_register_get_ttl (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->map_register_ttl;
}

int
vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  uword *p = 0;

  if (vnet_lisp_enable_disable_status () == 0)
    {
      clib_warning ("LISP is disabled!");
      return VNET_API_ERROR_LISP_DISABLED;
    }

  if (a->is_add)
    {
      p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
      if (!p)
	{
	  clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
	  return VNET_API_ERROR_INVALID_ARGUMENT;
	}

      lcm->mreq_itr_rlocs = p[0];
    }
  else
    {
      lcm->mreq_itr_rlocs = ~0;
    }

  return 0;
}

/* Statistics (not really errors) */
#define foreach_lisp_cp_lookup_error           \
_(DROP, "drop")                                \
_(MAP_REQUESTS_SENT, "map-request sent")       \
_(ARP_REPLY_TX, "ARP replies sent")            \
_(NDP_NEIGHBOR_ADVERTISEMENT_TX,               \
  "neighbor advertisement sent")

static char *lisp_cp_lookup_error_strings[] = {
#define _(sym,string) string,
  foreach_lisp_cp_lookup_error
#undef _
};

typedef enum
{
#define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
  foreach_lisp_cp_lookup_error
#undef _
    LISP_CP_LOOKUP_N_ERROR,
} lisp_cp_lookup_error_t;

typedef enum
{
  LISP_CP_LOOKUP_NEXT_DROP,
  LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
  LISP_CP_LOOKUP_N_NEXT,
} lisp_cp_lookup_next_t;

typedef struct
{
  gid_address_t dst_eid;
  ip_address_t map_resolver_ip;
} lisp_cp_lookup_trace_t;

u8 *
format_lisp_cp_lookup_trace (u8 * s, va_list * args)
{
  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);

  s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
	      format_ip_address, &t->map_resolver_ip, format_gid_address,
	      &t->dst_eid);
  return s;
}

int
get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
			   ip_address_t * sloc)
{
  lisp_msmr_t *mrit;
  ip_address_t *a;

  if (vec_len (lcm->map_resolvers) == 0)
    {
      clib_warning ("No map-resolver configured");
      return 0;
    }

  /* find the first mr ip we have a route to and the ip of the
   * iface that has a route to it */
  vec_foreach (mrit, lcm->map_resolvers)
  {
    a = &mrit->address;
    if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
      {
	ip_address_copy (mr_ip, a);

	/* also update globals */
	return 1;
      }
  }

  clib_warning ("Can't find map-resolver and local interface ip!");
  return 0;
}

static gid_address_t *
build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
{
  void *addr;
  u32 i;
  locator_t *loc;
  u32 *loc_indexp;
  ip_interface_address_t *ia = 0;
  gid_address_t gid_data, *gid = &gid_data;
  gid_address_t *rlocs = 0;
  ip_prefix_t *ippref = &gid_address_ippref (gid);
  ip_address_t *rloc = &ip_prefix_addr (ippref);

  clib_memset (gid, 0, sizeof (gid[0]));
  gid_address_type (gid) = GID_ADDR_IP_PREFIX;
  for (i = 0; i < vec_len (loc_set->locator_indices); i++)
    {
      loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
      loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);

      /* Add ipv4 locators first TODO sort them */

      /* *INDENT-OFF* */
      foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
				    loc->sw_if_index, 1 /* unnumbered */,
      ({
	addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
	ip_address_set (rloc, addr, IP4);
        ip_prefix_len (ippref) = 32;
        ip_prefix_normalize (ippref);
        vec_add1 (rlocs, gid[0]);
      }));

      /* Add ipv6 locators */
      foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
				    loc->sw_if_index, 1 /* unnumbered */,
      ({
        addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
        ip_address_set (rloc, addr, IP6);
        ip_prefix_len (ippref) = 128;
        ip_prefix_normalize (ippref);
        vec_add1 (rlocs, gid[0]);
      }));
      /* *INDENT-ON* */

    }
  return rlocs;
}

static vlib_buffer_t *
build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
		   ip_address_t * sloc, ip_address_t * rloc,
		   gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
{
  vlib_buffer_t *b;
  u32 bi;
  vlib_main_t *vm = lcm->vlib_main;

  if (vlib_buffer_alloc (vm, &bi, 1) != 1)
    {
      clib_warning ("Can't allocate buffer for Map-Request!");
      return 0;
    }

  b = vlib_get_buffer (vm, bi);

  /* leave some space for the encap headers */
  vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);

  /* put lisp msg */
  lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
		     1 /* rloc probe */ , nonce_res);

  /* push outer ip header */
  pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
		       rloc, 1);

  bi_res[0] = bi;

  return b;
}

static vlib_buffer_t *
build_encapsulated_map_request (lisp_cp_main_t * lcm,
				gid_address_t * seid, gid_address_t * deid,
				locator_set_t * loc_set, ip_address_t * mr_ip,
				ip_address_t * sloc, u8 is_smr_invoked,
				u64 * nonce_res, u32 * bi_res)
{
  vlib_buffer_t *b;
  u32 bi;
  gid_address_t *rlocs = 0;
  vlib_main_t *vm = lcm->vlib_main;

  if (vlib_buffer_alloc (vm, &bi, 1) != 1)
    {
      clib_warning ("Can't allocate buffer for Map-Request!");
      return 0;
    }

  b = vlib_get_buffer (vm, bi);
  b->flags = 0;

  /* leave some space for the encap headers */
  vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);

  /* get rlocs */
  rlocs = build_itr_rloc_list (lcm, loc_set);

  if (MR_MODE_SRC_DST == lcm->map_request_mode
      && GID_ADDR_SRC_DST != gid_address_type (deid))
    {
      gid_address_t sd;
      clib_memset (&sd, 0, sizeof (sd));
      build_src_dst (&sd, seid, deid);
      lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
			 0 /* rloc probe */ , nonce_res);
    }
  else
    {
      /* put lisp msg */
      lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
			 0 /* rloc probe */ , nonce_res);
    }

  /* push ecm: udp-ip-lisp */
  lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);

  /* push outer ip header */
  pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
		       mr_ip, 1);

  bi_res[0] = bi;

  vec_free (rlocs);
  return b;
}

static void
reset_pending_mr_counters (pending_map_request_t * r)
{
  r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
  r->retries_num = 0;
}

#define foreach_msmr \
  _(server) \
  _(resolver)

#define _(name) \
static int                                                              \
elect_map_ ## name (lisp_cp_main_t * lcm)                               \
{                                                                       \
  lisp_msmr_t *mr;                                                      \
  vec_foreach (mr, lcm->map_ ## name ## s)                              \
  {                                                                     \
    if (!mr->is_down)                                                   \
      {                                                                 \
	ip_address_copy (&lcm->active_map_ ##name, &mr->address);       \
	lcm->do_map_ ## name ## _election = 0;                          \
	return 1;                                                       \
      }                                                                 \
  }                                                                     \
  return 0;                                                             \
}
foreach_msmr
#undef _
  static void
free_map_register_records (mapping_t * maps)
{
  mapping_t *map;
  vec_foreach (map, maps) vec_free (map->locators);

  vec_free (maps);
}

static void
add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
	      ip_address_t * probed_loc)
{
  u32 *li;
  locator_t *loc, new;
  ip_interface_address_t *ia = 0;
  void *addr;
  ip_address_t *new_ip = &gid_address_ip (&new.address);

  m->locators = 0;
  locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
					 locator_set_index);
  vec_foreach (li, ls->locator_indices)
  {
    loc = pool_elt_at_index (lcm->locator_pool, li[0]);
    new = loc[0];
    if (loc->local)
      {
          /* *INDENT-OFF* */
          foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
                                        loc->sw_if_index, 1 /* unnumbered */,
          ({
            addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
                                                     ia);
            ip_address_set (new_ip, addr, IP4);
          }));

          /* Add ipv6 locators */
          foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
                                        loc->sw_if_index, 1 /* unnumbered */,
          ({
            addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
                                                     ia);
            ip_address_set (new_ip, addr, IP6);
          }));
          /* *INDENT-ON* */

	if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
	  new.probed = 1;
      }
    vec_add1 (m->locators, new);
  }
}

static mapping_t *
build_map_register_record_list (lisp_cp_main_t * lcm)
{
  mapping_t *recs = 0, rec, *m;

  /* *INDENT-OFF* */
  pool_foreach(m, lcm->mapping_pool,
  {
    /* for now build only local mappings */
    if (!m->local)
      continue;

    rec = m[0];
    add_locators (lcm, &rec, m->locator_set_index, NULL);
    vec_add1 (recs, rec);
  });
  /* *INDENT-ON* */

  return recs;
}

static vnet_crypto_alg_t
lisp_key_type_to_crypto_alg (lisp_key_type_t key_id)
{
  switch (key_id)
    {
    case HMAC_SHA_1_96:
      return VNET_CRYPTO_ALG_HMAC_SHA1;
    case HMAC_SHA_256_128:
      return VNET_CRYPTO_ALG_HMAC_SHA256;
    default:
      clib_warning ("unsupported encryption key type: %d!", key_id);
      break;
    }
  return VNET_CRYPTO_ALG_NONE;
}

static vnet_crypto_op_id_t
lisp_key_type_to_crypto_op (lisp_key_type_t key_id)
{
  switch (key_id)
    {
    case HMAC_SHA_1_96:
      return VNET_CRYPTO_OP_SHA1_HMAC;
    case HMAC_SHA_256_128:
      return VNET_CRYPTO_OP_SHA256_HMAC;
    default:
      clib_warning ("unsupported encryption key type: %d!", key_id);
      break;
    }
  return VNET_CRYPTO_OP_NONE;
}

static int
update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
			       lisp_key_type_t key_id, u8 * key,
			       u16 auth_data_len, u32 msg_len)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
  MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
  vnet_crypto_op_t _op, *op = &_op;
  vnet_crypto_key_index_t ki;

  vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
  op->len = msg_len;
  op->digest = MREG_DATA (map_reg_hdr);
  op->src = (u8 *) map_reg_hdr;
  op->digest_len = 0;
  op->iv = 0;

  ki = vnet_crypto_key_add (lcm->vlib_main,
			    lisp_key_type_to_crypto_alg (key_id), key,
			    vec_len (key));

  op->key_index = ki;

  vnet_crypto_process_ops (lcm->vlib_main, op, 1);
  vnet_crypto_key_del (lcm->vlib_main, ki);

  return 0;
}

static vlib_buffer_t *
build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
		    ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
		    mapping_t * records, lisp_key_type_t key_id, u8 * key,
		    u32 * bi_res)
{
  void *map_reg_hdr;
  vlib_buffer_t *b;
  u32 bi, auth_data_len = 0, msg_len = 0;
  vlib_main_t *vm = lcm->vlib_main;

  if (vlib_buffer_alloc (vm, &bi, 1) != 1)
    {
      clib_warning ("Can't allocate buffer for Map-Register!");
      return 0;
    }

  b = vlib_get_buffer (vm, bi);

  /* leave some space for the encap headers */
  vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);

  auth_data_len = auth_data_len_by_key_id (key_id);
  map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
					   auth_data_len, nonce_res,
					   &msg_len);

  update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
				 msg_len);

  /* push outer ip header */
  pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
		       ms_ip, 1);

  bi_res[0] = bi;
  return b;
}

#define _(name) \
static int                                                              \
get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip)  \
{                                                                       \
  lisp_msmr_t *mr;                                                      \
  while (lcm->do_map_ ## name ## _election                              \
	 | (0 == ip_fib_get_first_egress_ip_for_dst                     \
            (lcm, &lcm->active_map_ ##name, ip)))                       \
    {                                                                   \
      if (0 == elect_map_ ## name (lcm))                                \
	/* all map resolvers/servers are down */                        \
	{                                                               \
	  /* restart MR/MS checking by marking all of them up */        \
	  vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0;     \
	  return -1;                                                    \
	}                                                               \
    }                                                                   \
  return 0;                                                             \
}

foreach_msmr
#undef _
/* CP output statistics */
#define foreach_lisp_cp_output_error                  \
_(MAP_REGISTERS_SENT, "map-registers sent")           \
_(MAP_REQUESTS_SENT, "map-requests sent")             \
_(RLOC_PROBES_SENT, "rloc-probes sent")
static char *lisp_cp_output_error_strings[] = {
#define _(sym,string) string,
  foreach_lisp_cp_output_error
#undef _
};

typedef enum
{
#define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
  foreach_lisp_cp_output_error
#undef _
    LISP_CP_OUTPUT_N_ERROR,
} lisp_cp_output_error_t;

static uword
lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
		vlib_frame_t * from_frame)
{
  return 0;
}

/* dummy node used only for statistics */
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (lisp_cp_output_node) = {
  .function = lisp_cp_output,
  .name = "lisp-cp-output",
  .vector_size = sizeof (u32),
  .format_trace = format_lisp_cp_input_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = LISP_CP_OUTPUT_N_ERROR,
  .error_strings = lisp_cp_output_error_strings,

  .n_next_nodes = LISP_CP_INPUT_N_NEXT,

  .next_nodes = {
      [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
  },
};
/* *INDENT-ON* */

static int
send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
		 u32 local_locator_set_index, ip_address_t * sloc,
		 ip_address_t * rloc)
{
  locator_set_t *ls;
  u32 bi;
  vlib_buffer_t *b;
  vlib_frame_t *f;
  u64 nonce = 0;
  u32 next_index, *to_next;
  gid_address_t *itr_rlocs;

  ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
  itr_rlocs = build_itr_rloc_list (lcm, ls);

  b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
  vec_free (itr_rlocs);
  if (!b)
    return -1;

  vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;

  next_index = (ip_addr_version (rloc) == IP4) ?
    ip4_lookup_node.index : ip6_lookup_node.index;

  f = vlib_get_frame_to_node (lcm->vlib_main, next_index);

  /* Enqueue the packet */
  to_next = vlib_frame_vector_args (f);
  to_next[0] = bi;
  f->n_vectors = 1;
  vlib_put_frame_to_node (lcm->vlib_main, next_index, f);

  return 0;
}

static int
send_rloc_probes (lisp_cp_main_t * lcm)
{
  u8 lprio = 0;
  mapping_t *lm;
  fwd_entry_t *e;
  locator_pair_t *lp;
  u32 si, rloc_probes_sent = 0;

  /* *INDENT-OFF* */
  pool_foreach (e, lcm->fwd_entry_pool,
  {
    if (vec_len (e->locator_pairs) == 0)
      continue;

    si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
    if (~0 == si)
      {
        clib_warning ("internal error: cannot find local eid %U in "
                      "map-cache!", format_gid_address, &e->leid);
        continue;
      }
    lm = pool_elt_at_index (lcm->mapping_pool, si);

    /* get the best (lowest) priority */
    lprio = e->locator_pairs[0].priority;

    /* send rloc-probe for pair(s) with the best remote locator priority */
    vec_foreach (lp, e->locator_pairs)
      {
        if (lp->priority != lprio)
          break;

        /* get first remote locator */
        send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
                         &lp->rmt_loc);
        rloc_probes_sent++;
      }
  });
  /* *INDENT-ON* */

  vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
			       LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
			       rloc_probes_sent);
  return 0;
}

static int
send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
{
  pending_map_register_t *pmr;
  u32 bi, map_registers_sent = 0;
  vlib_buffer_t *b;
  ip_address_t sloc;
  vlib_frame_t *f;
  u64 nonce = 0;
  u32 next_index, *to_next;
  mapping_t *records, *r, *group, *k;

  if (get_egress_map_server_ip (lcm, &sloc) < 0)
    return -1;

  records = build_map_register_record_list (lcm);
  if (!records)
    return -1;

  vec_foreach (r, records)
  {
    u8 *key = r->key;
    u8 key_id = r->key_id;

    if (!key)
      continue;			/* no secret key -> map-register cannot be sent */

    group = 0;
    vec_add1 (group, r[0]);

    /* group mappings that share common key */
    for (k = r + 1; k < vec_end (records); k++)
      {
	if (k->key_id != r->key_id)
	  continue;

	if (vec_is_equal (k->key, r->key))
	  {
	    vec_add1 (group, k[0]);
	    k->key = 0;		/* don't process this mapping again */
	  }
      }

    b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
			    want_map_notif, group, key_id, key, &bi);
    vec_free (group);
    if (!b)
      continue;

    vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;

    next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
      ip4_lookup_node.index : ip6_lookup_node.index;

    f = vlib_get_frame_to_node (lcm->vlib_main, next_index);

    /* Enqueue the packet */
    to_next = vlib_frame_vector_args (f);
    to_next[0] = bi;
    f->n_vectors = 1;
    vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
    map_registers_sent++;

    pool_get (lcm->pending_map_registers_pool, pmr);
    clib_memset (pmr, 0, sizeof (*pmr));
    pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
    hash_set (lcm->map_register_messages_by_nonce, nonce,
	      pmr - lcm->pending_map_registers_pool);
  }
  free_map_register_records (records);

  vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
			       LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
			       map_registers_sent);

  return 0;
}

#define send_encapsulated_map_request(lcm, seid, deid, smr) \
  _send_encapsulated_map_request(lcm, seid, deid, smr, 0)

#define resend_encapsulated_map_request(lcm, seid, deid, smr) \
  _send_encapsulated_map_request(lcm, seid, deid, smr, 1)

static int
_send_encapsulated_map_request (lisp_cp_main_t * lcm,
				gid_address_t * seid, gid_address_t * deid,
				u8 is_smr_invoked, u8 is_resend)
{
  u32 next_index, bi = 0, *to_next, map_index;
  vlib_buffer_t *b;
  vlib_frame_t *f;
  u64 nonce = 0;
  locator_set_t *loc_set;
  mapping_t *map;
  pending_map_request_t *pmr, *duplicate_pmr = 0;
  ip_address_t sloc;
  u32 ls_index;

  /* if there is already a pending request remember it */

  /* *INDENT-OFF* */
  pool_foreach(pmr, lcm->pending_map_requests_pool,
  ({
    if (!gid_address_cmp (&pmr->src, seid)
        && !gid_address_cmp (&pmr->dst, deid))
      {
        duplicate_pmr = pmr;
        break;
      }
  }));
  /* *INDENT-ON* */

  if (!is_resend && duplicate_pmr)
    {
      /* don't send the request if there is a pending map request already */
      return 0;
    }

  u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;

  /* get locator-set for seid */
  if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
    {
      map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
      if (map_index == ~0)
	{
	  clib_warning ("No local mapping found in eid-table for %U!",
			format_gid_address, seid);
	  return -1;
	}

      map = pool_elt_at_index (lcm->mapping_pool, map_index);

      if (!map->local)
	{
	  clib_warning
	    ("Mapping found for src eid %U is not marked as local!",
	     format_gid_address, seid);
	  return -1;
	}
      ls_index = map->locator_set_index;
    }
  else
    {
      if (pitr_mode)
	{
	  if (lcm->pitr_map_index != ~0)
	    {
	      map =
		pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
	      ls_index = map->locator_set_index;
	    }
	  else
	    {
	      return -1;
	    }
	}
      else
	{
	  if (lcm->nsh_map_index == (u32) ~ 0)
	    {
	      clib_warning ("No locator-set defined for NSH!");
	      return -1;
	    }
	  else
	    {
	      map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
	      ls_index = map->locator_set_index;
	    }
	}
    }

  /* overwrite locator set if map-request itr-rlocs configured */
  if (~0 != lcm->mreq_itr_rlocs)
    {
      ls_index = lcm->mreq_itr_rlocs;
    }

  loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);

  if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
    {
      if (duplicate_pmr)
	duplicate_pmr->to_be_removed = 1;
      return -1;
    }

  /* build the encapsulated map request */
  b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
				      &lcm->active_map_resolver,
				      &sloc, is_smr_invoked, &nonce, &bi);

  if (!b)
    return -1;

  /* set fib index to default and lookup node */
  vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
  next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
    ip4_lookup_node.index : ip6_lookup_node.index;

  f = vlib_get_frame_to_node (lcm->vlib_main, next_index);

  /* Enqueue the packet */
  to_next = vlib_frame_vector_args (f);
  to_next[0] = bi;
  f->n_vectors = 1;
  vlib_put_frame_to_node (lcm->vlib_main, next_index, f);

  vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
			       LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);

  if (duplicate_pmr)
    /* if there is a pending request already update it */
    {
      if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
	{
	  /* remove the oldest nonce */
	  u64 CLIB_UNUSED (tmp), *nonce_del;
	  nonce_del = clib_fifo_head (duplicate_pmr->nonces);
	  hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
	  clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
	}

      clib_fifo_add1 (duplicate_pmr->nonces, nonce);
      hash_set (lcm->pending_map_requests_by_nonce, nonce,
		duplicate_pmr - lcm->pending_map_requests_pool);
    }
  else
    {
      /* add map-request to pending requests table */
      pool_get (lcm->pending_map_requests_pool, pmr);
      clib_memset (pmr, 0, sizeof (*pmr));
      gid_address_copy (&pmr->src, seid);
      gid_address_copy (&pmr->dst, deid);
      clib_fifo_add1 (pmr->nonces, nonce);
      pmr->is_smr_invoked = is_smr_invoked;
      reset_pending_mr_counters (pmr);
      hash_set (lcm->pending_map_requests_by_nonce, nonce,
		pmr - lcm->pending_map_requests_pool);
    }

  return 0;
}

static void
get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
{
  ip4_header_t *ip4 = hdr;
  ip6_header_t *ip6;

  if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
    {
      ip_address_set (src, &ip4->src_address, IP4);
      ip_address_set (dst, &ip4->dst_address, IP4);
    }
  else
    {
      ip6 = hdr;
      ip_address_set (src, &ip6->src_address, IP6);
      ip_address_set (dst, &ip6->dst_address, IP6);
    }
}

static u32
lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
			     u8 version)
{
  uword *vnip;
  u32 vni = ~0, table_id = ~0;

  table_id = fib_table_get_table_id_for_sw_if_index ((version ==
						      IP4 ? FIB_PROTOCOL_IP4 :
						      FIB_PROTOCOL_IP6),
						     vnet_buffer
						     (b)->sw_if_index
						     [VLIB_RX]);

  vnip = hash_get (lcm->vni_by_table_id, table_id);
  if (vnip)
    vni = vnip[0];
  else
    clib_warning ("vrf %d is not mapped to any vni!", table_id);

  return vni;
}

always_inline u32
lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
{
  u32 sw_if_index0;

  l2input_main_t *l2im = &l2input_main;
  l2_input_config_t *config;
  l2_bridge_domain_t *bd_config;

  sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
  config = vec_elt_at_index (l2im->configs, sw_if_index0);
  bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);

  return bd_config->bd_id;
}

always_inline u32
lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
{
  uword *vnip;
  u32 vni = ~0;
  u32 bd = lisp_get_bd_from_buffer_eth (b);

  vnip = hash_get (lcm->vni_by_bd_id, bd);
  if (vnip)
    vni = vnip[0];
  else
    clib_warning ("bridge domain %d is not mapped to any vni!", bd);

  return vni;
}

void
get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
				  gid_address_t * src, gid_address_t * dst,
				  u16 type)
{
  ethernet_header_t *eh;
  u32 vni = 0;
  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;

  clib_memset (src, 0, sizeof (*src));
  clib_memset (dst, 0, sizeof (*dst));

  gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
  gid_address_type (src) = GID_ADDR_NO_ADDRESS;

  if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
    {
      ip4_header_t *ip;
      u8 version, preflen;

      gid_address_type (src) = GID_ADDR_IP_PREFIX;
      gid_address_type (dst) = GID_ADDR_IP_PREFIX;

      ip = vlib_buffer_get_current (b);
      get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));

      version = gid_address_ip_version (src);
      preflen = ip_address_max_len (version);
      gid_address_ippref_len (src) = preflen;
      gid_address_ippref_len (dst) = preflen;

      vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
      gid_address_vni (dst) = vni;
      gid_address_vni (src) = vni;
    }
  else if (LISP_AFI_MAC == type)
    {
      ethernet_arp_header_t *ah;

      eh = vlib_buffer_get_current (b);

      if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
	{
	  ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
	  gid_address_type (dst) = GID_ADDR_ARP;

	  if (clib_net_to_host_u16 (ah->opcode)
	      != ETHERNET_ARP_OPCODE_request)
	    {
	      clib_memset (&gid_address_arp_ndp_ip (dst), 0,
			   sizeof (ip_address_t));
	      ip_addr_version (&gid_address_arp_ndp_ip (dst)) = IP4;
	      gid_address_arp_ndp_bd (dst) = ~0;
	      return;
	    }

	  gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
	  clib_memcpy (&gid_address_arp_ip4 (dst),
		       &ah->ip4_over_ethernet[1].ip4, 4);
	}
      else
	{
	  if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
	    {
	      ip6_header_t *ip;
	      ip = (ip6_header_t *) (eh + 1);

	      if (IP_PROTOCOL_ICMP6 == ip->protocol)
		{
		  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
		  ndh = ip6_next_header (ip);
		  if (ndh->icmp.type == ICMP6_neighbor_solicitation)
		    {
		      gid_address_type (dst) = GID_ADDR_NDP;

		      /* check that source link layer address option is present */
		      opt = (void *) (ndh + 1);
		      if ((opt->header.type !=
			   ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
			  || (opt->header.n_data_u64s != 1))
			{
			  clib_memset (&gid_address_arp_ndp_ip (dst), 0,
				       sizeof (ip_address_t));
			  ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
			    IP6;
			  gid_address_arp_ndp_bd (dst) = ~0;
			  gid_address_type (src) = GID_ADDR_NO_ADDRESS;
			  return;
			}

		      gid_address_ndp_bd (dst) =
			lisp_get_bd_from_buffer_eth (b);
		      ip_address_set (&gid_address_arp_ndp_ip (dst),
				      &ndh->target_address, IP6);
		      return;
		    }
		}
	    }

	  gid_address_type (src) = GID_ADDR_MAC;
	  gid_address_type (dst) = GID_ADDR_MAC;
	  mac_copy (&gid_address_mac (src), eh->src_address);
	  mac_copy (&gid_address_mac (dst), eh->dst_address);

	  /* get vni */
	  vni = lisp_get_vni_from_buffer_eth (lcm, b);

	  gid_address_vni (dst) = vni;
	  gid_address_vni (src) = vni;
	}
    }
  else if (LISP_AFI_LCAF == type)
    {
      lisp_nsh_hdr_t *nh;
      eh = vlib_buffer_get_current (b);

      if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
	{
	  nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
	  u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
	  u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
	  gid_address_nsh_spi (dst) = spi;
	  gid_address_nsh_si (dst) = si;

	  gid_address_type (dst) = GID_ADDR_NSH;
	  gid_address_type (src) = GID_ADDR_NSH;
	}
    }
}

static uword
lisp_cp_lookup_inline (vlib_main_t * vm,
		       vlib_node_runtime_t * node,
		       vlib_frame_t * from_frame, int overlay)
{
  icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
  u32 *from, *to_next, di, si;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 next_index;
  uword n_left_from, n_left_to_next;
  vnet_main_t *vnm = vnet_get_main ();

  from = vlib_frame_vector_args (from_frame);
  n_left_from = from_frame->n_vectors;
  next_index = node->cached_next_index;

  while (n_left_from > 0)
    {
      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);

      while (n_left_from > 0 && n_left_to_next > 0)
	{
	  u32 pi0, sw_if_index0, next0;
	  u64 mac0;
	  vlib_buffer_t *b0;
	  gid_address_t src, dst;
	  ethernet_arp_header_t *arp0;
	  ethernet_header_t *eth0;
	  vnet_hw_interface_t *hw_if0;
	  ethernet_header_t *eh0;
	  icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
	  ip6_header_t *ip0;

	  pi0 = from[0];
	  from += 1;
	  n_left_from -= 1;
	  to_next[0] = pi0;
	  to_next += 1;
	  n_left_to_next -= 1;

	  b0 = vlib_get_buffer (vm, pi0);

	  /* src/dst eid pair */
	  get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);

	  if (gid_address_type (&dst) == GID_ADDR_ARP)
	    {
	      mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
	      if (GID_LOOKUP_MISS_L2 == mac0)
		goto drop;

	      /* send ARP reply */
	      sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
	      vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;

	      hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);

	      eth0 = vlib_buffer_get_current (b0);
	      arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
						+ sizeof (*eth0));
	      arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
	      arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
	      mac_address_from_u64 (&arp0->ip4_over_ethernet[0].mac, mac0);
	      clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
			   &gid_address_arp_ip4 (&dst), 4);

	      /* Hardware must be ethernet-like. */
	      ASSERT (vec_len (hw_if0->hw_address) == 6);

	      clib_memcpy (eth0->dst_address, eth0->src_address, 6);
	      clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);

	      b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
	      next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
	      goto enqueue;
	    }
	  else if (gid_address_type (&dst) == GID_ADDR_NDP)
	    {
	      mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
	      if (GID_LOOKUP_MISS_L2 == mac0)
		goto drop;

	      sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
	      vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;

	      eh0 = vlib_buffer_get_current (b0);
	      ip0 = (ip6_header_t *) (eh0 + 1);
	      ndh = ip6_next_header (ip0);
	      int bogus_length;
	      ip0->dst_address = ip0->src_address;
	      ip0->src_address = ndh->target_address;
	      ip0->hop_limit = 255;
	      opt = (void *) (ndh + 1);
	      opt->header.type =
		ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
	      clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
	      ndh->icmp.type = ICMP6_neighbor_advertisement;
	      ndh->advertisement_flags = clib_host_to_net_u32
		(ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
		 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
	      ndh->icmp.checksum = 0;
	      ndh->icmp.checksum =
		ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
						   &bogus_length);
	      clib_memcpy (eh0->dst_address, eh0->src_address, 6);
	      clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
	      b0->error =
		node->errors
		[LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
	      next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
	      goto enqueue;
	    }

	  /* if we have remote mapping for destination already in map-cache
	     add forwarding tunnel directly. If not send a map-request */
	  di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
					 &src);
	  if (~0 != di)
	    {
	      mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
	      /* send a map-request also in case of negative mapping entry
	         with corresponding action */
	      if (m->action == LISP_SEND_MAP_REQUEST)
		{
		  /* send map-request */
		  queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
				     0 /* is_resend */ );
		}
	      else
		{
		  if (GID_ADDR_NSH != gid_address_type (&dst))
		    {
		      si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
						  &src);
		    }
		  else
		    si = lcm->nsh_map_index;

		  if (~0 != si)
		    {
		      dp_add_fwd_entry_from_mt (si, di);
		    }
		}
	    }
	  else
	    {
	      /* send map-request */
	      queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
				 0 /* is_resend */ );
	    }

	drop:
	  b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
	  next0 = LISP_CP_LOOKUP_NEXT_DROP;
	enqueue:
	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
	    {
	      lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
							   sizeof (*tr));

	      clib_memset (tr, 0, sizeof (*tr));
	      gid_address_copy (&tr->dst_eid, &dst);
	      ip_address_copy (&tr->map_resolver_ip,
			       &lcm->active_map_resolver);
	    }
	  gid_address_free (&dst);
	  gid_address_free (&src);
	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
					   to_next,
					   n_left_to_next, pi0, next0);
	}

      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
    }
  return from_frame->n_vectors;
}

static uword
lisp_cp_lookup_ip4 (vlib_main_t * vm,
		    vlib_node_runtime_t * node, vlib_frame_t * from_frame)
{
  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
}

static uword
lisp_cp_lookup_ip6 (vlib_main_t * vm,
		    vlib_node_runtime_t * node, vlib_frame_t * from_frame)
{
  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
}

static uword
lisp_cp_lookup_l2 (vlib_main_t * vm,
		   vlib_node_runtime_t * node, vlib_frame_t * from_frame)
{
  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
}

static uword
lisp_cp_lookup_nsh (vlib_main_t * vm,
		    vlib_node_runtime_t * node, vlib_frame_t * from_frame)
{
  /* TODO decide if NSH should be propagated as LCAF or not */
  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
  .function = lisp_cp_lookup_ip4,
  .name = "lisp-cp-lookup-ip4",
  .vector_size = sizeof (u32),
  .format_trace = format_lisp_cp_lookup_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = LISP_CP_LOOKUP_N_ERROR,
  .error_strings = lisp_cp_lookup_error_strings,

  .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,

  .next_nodes = {
      [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
      [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
  },
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
  .function = lisp_cp_lookup_ip6,
  .name = "lisp-cp-lookup-ip6",
  .vector_size = sizeof (u32),
  .format_trace = format_lisp_cp_lookup_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = LISP_CP_LOOKUP_N_ERROR,
  .error_strings = lisp_cp_lookup_error_strings,

  .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,

  .next_nodes = {
      [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
      [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
  },
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
  .function = lisp_cp_lookup_l2,
  .name = "lisp-cp-lookup-l2",
  .vector_size = sizeof (u32),
  .format_trace = format_lisp_cp_lookup_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = LISP_CP_LOOKUP_N_ERROR,
  .error_strings = lisp_cp_lookup_error_strings,

  .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,

  .next_nodes = {
      [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
      [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
  },
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
  .function = lisp_cp_lookup_nsh,
  .name = "lisp-cp-lookup-nsh",
  .vector_size = sizeof (u32),
  .format_trace = format_lisp_cp_lookup_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = LISP_CP_LOOKUP_N_ERROR,
  .error_strings = lisp_cp_lookup_error_strings,

  .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,

  .next_nodes = {
      [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
      [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
  },
};
/* *INDENT-ON* */

/* lisp_cp_input statistics */
#define foreach_lisp_cp_input_error                               \
_(DROP, "drop")                                                   \
_(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received")        \
_(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received")         \
_(MAP_NOTIFIES_RECEIVED, "map-notifies received")                 \
_(MAP_REPLIES_RECEIVED, "map-replies received")

static char *lisp_cp_input_error_strings[] = {
#define _(sym,string) string,
  foreach_lisp_cp_input_error
#undef _
};

typedef enum
{
#define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
  foreach_lisp_cp_input_error
#undef _
    LISP_CP_INPUT_N_ERROR,
} lisp_cp_input_error_t;

typedef struct
{
  gid_address_t dst_eid;
  ip4_address_t map_resolver_ip;
} lisp_cp_input_trace_t;

u8 *
format_lisp_cp_input_trace (u8 * s, va_list * args)
{
  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  CLIB_UNUSED (lisp_cp_input_trace_t * t) =
    va_arg (*args, lisp_cp_input_trace_t *);

  s = format (s, "LISP-CP-INPUT: TODO");
  return s;
}

static void
remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
{
  mapping_t *m;
  vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
  clib_memset (adj_args, 0, sizeof (adj_args[0]));

  m = pool_elt_at_index (lcm->mapping_pool, mi);

  gid_address_copy (&adj_args->reid, &m->eid);
  adj_args->is_add = 0;
  if (vnet_lisp_add_del_adjacency (adj_args))
    clib_warning ("failed to del adjacency!");

  vnet_lisp_del_mapping (&m->eid, NULL);
  mapping_delete_timer (lcm, mi);
}

static void
mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
				f64 expiration_time)
{
  mapping_t *m;
  u64 now = clib_cpu_time_now ();
  u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
  u64 exp_clock_time = now + expiration_time * cpu_cps;

  m = pool_elt_at_index (lcm->mapping_pool, mi);

  m->timer_set = 1;
  timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
}

static void
process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
{
  int rv;
  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
  mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
  uword *fei;
  fwd_entry_t *fe;
  vlib_counter_t c;
  u8 have_stats = 0;

  if (m->delete_after_expiration)
    {
      remove_expired_mapping (lcm, mi);
      return;
    }

  fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
  if (!fei)
    return;

  fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);

  clib_memset (a, 0, sizeof (*a));
  a->rmt_eid = fe->reid;
  if (fe->is_src_dst)
    a->lcl_eid = fe->leid;
  a->vni = gid_address_vni (&fe->reid);

  rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
  if (0 == rv)
    have_stats = 1;

  if (m->almost_expired)
    {
      m->almost_expired = 0;	/* reset flag */
      if (have_stats)
	{
	  if (m->packets != c.packets)
	    {
	      /* mapping is in use, re-fetch */
	      map_request_args_t mr_args;
	      clib_memset (&mr_args, 0, sizeof (mr_args));
	      mr_args.seid = fe->leid;
	      mr_args.deid = fe->reid;

	      send_map_request_thread_fn (&mr_args);
	    }
	  else
	    remove_expired_mapping (lcm, mi);
	}
      else
	remove_expired_mapping (lcm, mi);
    }
  else
    {
      m->almost_expired = 1;
      mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);

      if (have_stats)
	/* save counter */
	m->packets = c.packets;
      else
	m->delete_after_expiration = 1;
    }
}

static void
map_records_arg_free (map_records_arg_t * a)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  mapping_t *m;
  vec_foreach (m, a->mappings)
  {
    vec_free (m->locators);
    gid_address_free (&m->eid);
  }
  pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
}

void *
process_map_reply (map_records_arg_t * a)
{
  mapping_t *m;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u32 dst_map_index = 0;
  pending_map_request_t *pmr;
  u64 *noncep;
  uword *pmr_index;
  u8 is_changed = 0;

  if (a->is_rloc_probe)
    goto done;

  /* Check pending requests table and nonce */
  pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
  if (!pmr_index)
    {
      clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
      goto done;
    }
  pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);

  vec_foreach (m, a->mappings)
  {
    vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
    clib_memset (m_args, 0, sizeof (m_args[0]));
    gid_address_copy (&m_args->eid, &m->eid);
    m_args->action = m->action;
    m_args->authoritative = m->authoritative;
    m_args->ttl = m->ttl;
    m_args->is_static = 0;

    /* insert/update mappings cache */
    vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);

    if (dst_map_index == (u32) ~ 0)
      continue;

    if (is_changed)
      {
	/* try to program forwarding only if mapping saved or updated */
	vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
	clib_memset (adj_args, 0, sizeof (adj_args[0]));

	gid_address_copy (&adj_args->leid, &pmr->src);
	gid_address_copy (&adj_args->reid, &m->eid);
	adj_args->is_add = 1;

	if (vnet_lisp_add_del_adjacency (adj_args))
	  clib_warning ("failed to add adjacency!");
      }

    if ((u32) ~ 0 != m->ttl)
      mapping_start_expiration_timer (lcm, dst_map_index,
				      (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
  }

  /* remove pending map request entry */

  /* *INDENT-OFF* */
  clib_fifo_foreach (noncep, pmr->nonces, ({
    hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
  }));
  /* *INDENT-ON* */

  clib_fifo_free (pmr->nonces);
  pool_put (lcm->pending_map_requests_pool, pmr);

done:
  a->is_free = 1;
  return 0;
}

static int
is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
		    lisp_key_type_t key_id, u8 * key)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u8 *auth_data = 0;
  u16 auth_data_len;
  int result;
  vnet_crypto_op_t _op, *op = &_op;
  vnet_crypto_key_index_t ki;
  u8 out[EVP_MAX_MD_SIZE] = { 0, };

  auth_data_len = auth_data_len_by_key_id (key_id);
  if ((u16) ~ 0 == auth_data_len)
    {
      clib_warning ("invalid length for key_id %d!", key_id);
      return 0;
    }

  /* save auth data */
  vec_validate (auth_data, auth_data_len - 1);
  clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);

  /* clear auth data */
  clib_memset (MNOTIFY_DATA (h), 0, auth_data_len);

  vnet_crypto_op_init (op, lisp_key_type_to_crypto_op (key_id));
  op->len = msg_len;
  op->digest = out;
  op->src = (u8 *) h;
  op->digest_len = 0;
  op->iv = 0;

  ki = vnet_crypto_key_add (lcm->vlib_main,
			    lisp_key_type_to_crypto_alg (key_id), key,
			    vec_len (key));

  op->key_index = ki;

  vnet_crypto_process_ops (lcm->vlib_main, op, 1);
  vnet_crypto_key_del (lcm->vlib_main, ki);

  result = memcmp (out, auth_data, auth_data_len);

  vec_free (auth_data);

  return !result;
}

static void
process_map_notify (map_records_arg_t * a)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  uword *pmr_index;

  pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
  if (!pmr_index)
    {
      clib_warning ("No pending map-register entry with nonce %lu!",
		    a->nonce);
      return;
    }

  a->is_free = 1;
  pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
  hash_unset (lcm->map_register_messages_by_nonce, a->nonce);

  /* reset map-notify counter */
  lcm->expired_map_registers = 0;
}

static mapping_t *
get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
{
  u32 mi;

  mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
  if (~0 == mi)
    {
      clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
		    e);
      return 0;
    }
  return pool_elt_at_index (lcm->mapping_pool, mi);
}

/**
 * When map-notify is received it is necessary that all EIDs in the record
 * list share common key. The key is then used to verify authentication
 * data in map-notify message.
 */
static int
map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
			    u32 key_id, u8 ** key_out)
{
  u32 i, len = vec_len (maps);
  mapping_t *m;

  /* get key of the first mapping */
  m = get_mapping (lcm, &maps[0].eid);
  if (!m || !m->key)
    return -1;

  key_out[0] = m->key;

  for (i = 1; i < len; i++)
    {
      m = get_mapping (lcm, &maps[i].eid);
      if (!m || !m->key)
	return -1;

      if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
	{
	  clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
	  return -1;
	}
    }
  return 0;
}

static int
parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
{
  locator_t *locators = 0;
  u32 i, len;
  gid_address_t deid;
  mapping_t m;
  locator_t *loc;

  clib_memset (&m, 0, sizeof (m));

  /* parse record eid */
  for (i = 0; i < count; i++)
    {
      locators = 0;
      len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
      if (len == ~0)
	{
	  clib_warning ("Failed to parse mapping record!");
	  vec_foreach (loc, locators) locator_free (loc);
	  vec_free (locators);
	  return -1;
	}

      m.locators = locators;
      gid_address_copy (&m.eid, &deid);
      vec_add1 (a->mappings, m);
    }

  return 0;
}

static map_records_arg_t *
map_record_args_get ()
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  map_records_arg_t *rec;

  /* Cleanup first */
  /* *INDENT-OFF* */
  pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
    if (rec->is_free)
      map_records_arg_free (rec);
  }));
  /* *INDENT-ON* */

  pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
  return rec;
}

static map_records_arg_t *
parse_map_notify (vlib_buffer_t * b)
{
  int rc = 0;
  map_notify_hdr_t *mnotif_hdr;
  lisp_key_type_t key_id;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u8 *key = 0;
  gid_address_t deid;
  u16 auth_data_len = 0;
  u8 record_count;
  map_records_arg_t *a;

  a = map_record_args_get ();
  clib_memset (a, 0, sizeof (*a));
  mnotif_hdr = vlib_buffer_get_current (b);
  vlib_buffer_pull (b, sizeof (*mnotif_hdr));
  clib_memset (&deid, 0, sizeof (deid));

  a->nonce = MNOTIFY_NONCE (mnotif_hdr);
  key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
  auth_data_len = auth_data_len_by_key_id (key_id);

  /* advance buffer by authentication data */
  vlib_buffer_pull (b, auth_data_len);

  record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
  rc = parse_map_records (b, a, record_count);
  if (rc != 0)
    {
      map_records_arg_free (a);
      return 0;
    }

  rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
  if (rc != 0)
    {
      map_records_arg_free (a);
      return 0;
    }

  /* verify authentication data */
  if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
			   - (u8 *) mnotif_hdr, key_id, key))
    {
      clib_warning ("Map-notify auth data verification failed for nonce "
		    "0x%lx!", a->nonce);
      map_records_arg_free (a);
      return 0;
    }
  return a;
}

static vlib_buffer_t *
build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
		 ip_address_t * dst, u64 nonce, u8 probe_bit,
		 mapping_t * records, u16 dst_port, u32 * bi_res)
{
  vlib_buffer_t *b;
  u32 bi;
  vlib_main_t *vm = lcm->vlib_main;

  if (vlib_buffer_alloc (vm, &bi, 1) != 1)
    {
      clib_warning ("Can't allocate buffer for Map-Register!");
      return 0;
    }

  b = vlib_get_buffer (vm, bi);

  /* leave some space for the encap headers */
  vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);

  lisp_msg_put_map_reply (b, records, nonce, probe_bit);

  /* push outer ip header */
  pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);

  bi_res[0] = bi;
  return b;
}

static int
send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
		u8 probe_bit, u64 nonce, u16 dst_port,
		ip_address_t * probed_loc)
{
  ip_address_t src;
  u32 bi;
  vlib_buffer_t *b;
  vlib_frame_t *f;
  u32 next_index, *to_next;
  mapping_t *records = 0, *m;

  m = pool_elt_at_index (lcm->mapping_pool, mi);
  if (!m)
    return -1;

  vec_add1 (records, m[0]);
  add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
  clib_memset (&src, 0, sizeof (src));

  if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
    {
      clib_warning ("can't find interface address for %U", format_ip_address,
		    dst);
      return -1;
    }

  b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
		       &bi);
  if (!b)
    return -1;
  free_map_register_records (records);

  vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
  next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
    ip4_lookup_node.index : ip6_lookup_node.index;

  f = vlib_get_frame_to_node (lcm->vlib_main, next_index);

  /* Enqueue the packet */
  to_next = vlib_frame_vector_args (f);
  to_next[0] = bi;
  f->n_vectors = 1;
  vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
  return 0;
}

static void
find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
{
  const i32 start = vnet_buffer (b)->l3_hdr_offset;
  if (start < 0 && start < -sizeof (b->pre_data))
    {
      *ip_hdr = 0;
      return;
    }

  *ip_hdr = b->data + start;
  if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
    *ip_hdr = 0;
}

void
process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
		     lisp_cp_main_t * lcm, vlib_buffer_t * b)
{
  u8 *ip_hdr = 0;
  ip_address_t *dst_loc = 0, probed_loc, src_loc;
  mapping_t m;
  map_request_hdr_t *mreq_hdr;
  gid_address_t src, dst;
  u64 nonce;
  u32 i, len = 0, rloc_probe_recv = 0;
  gid_address_t *itr_rlocs = 0;

  mreq_hdr = vlib_buffer_get_current (b);
  if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
    {
      clib_warning
	("Only SMR Map-Requests and RLOC probe supported for now!");
      return;
    }

  vlib_buffer_pull (b, sizeof (*mreq_hdr));
  nonce = MREQ_NONCE (mreq_hdr);

  /* parse src eid */
  len = lisp_msg_parse_addr (b, &src);
  if (len == ~0)
    return;

  len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
				  MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
  if (len == ~0)
    goto done;

  /* parse eid records and send SMR-invoked map-requests */
  for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
    {
      clib_memset (&dst, 0, sizeof (dst));
      len = lisp_msg_parse_eid_rec (b, &dst);
      if (len == ~0)
	{
	  clib_warning ("Can't parse map-request EID-record");
	  goto done;
	}

      if (MREQ_SMR (mreq_hdr))
	{
	  /* send SMR-invoked map-requests */
	  queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
	}
      else if (MREQ_RLOC_PROBE (mreq_hdr))
	{
	  find_ip_header (b, &ip_hdr);
	  if (!ip_hdr)
	    {
	      clib_warning ("Cannot find the IP header!");
	      goto done;
	    }
	  rloc_probe_recv++;
	  clib_memset (&m, 0, sizeof (m));
	  u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);

	  // TODO: select best locator; for now use the first one
	  dst_loc = &gid_address_ip (&itr_rlocs[0]);

	  /* get src/dst IP addresses */
	  get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);

	  // TODO get source port from buffer
	  u16 src_port = LISP_CONTROL_PORT;

	  send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
			  src_port, &probed_loc);
	}
    }

done:
  vlib_node_increment_counter (vm, node->node_index,
			       LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
			       rloc_probe_recv);
  vec_free (itr_rlocs);
}

map_records_arg_t *
parse_map_reply (vlib_buffer_t * b)
{
  locator_t probed;
  gid_address_t deid;
  void *h;
  u32 i, len = 0;
  mapping_t m;
  map_reply_hdr_t *mrep_hdr;
  map_records_arg_t *a;

  a = map_record_args_get ();
  clib_memset (a, 0, sizeof (*a));

  locator_t *locators;

  mrep_hdr = vlib_buffer_get_current (b);
  a->nonce = MREP_NONCE (mrep_hdr);
  a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
  if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
    {
      map_records_arg_free (a);
      return 0;
    }
  vlib_buffer_pull (b, sizeof (*mrep_hdr));

  for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
    {
      clib_memset (&m, 0, sizeof (m));
      locators = 0;
      h = vlib_buffer_get_current (b);

      m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
      m.action = MAP_REC_ACTION (h);
      m.authoritative = MAP_REC_AUTH (h);

      len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
      if (len == ~0)
	{
	  clib_warning ("Failed to parse mapping record!");
	  map_records_arg_free (a);
	  return 0;
	}

      m.locators = locators;
      gid_address_copy (&m.eid, &deid);
      vec_add1 (a->mappings, m);
    }
  return a;
}

static void
queue_map_reply_for_processing (map_records_arg_t * a)
{
  vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
}

static void
queue_map_notify_for_processing (map_records_arg_t * a)
{
  vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
}

static uword
lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
	       vlib_frame_t * from_frame)
{
  u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
    map_notifies_recv = 0;
  lisp_msg_type_e type;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  map_records_arg_t *a;

  from = vlib_frame_vector_args (from_frame);
  n_left_from = from_frame->n_vectors;


  while (n_left_from > 0)
    {
      u32 n_left_to_next_drop;

      vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
			   to_next_drop, n_left_to_next_drop);
      while (n_left_from > 0 && n_left_to_next_drop > 0)
	{
	  u32 bi0;
	  vlib_buffer_t *b0;

	  bi0 = from[0];
	  from += 1;
	  n_left_from -= 1;
	  to_next_drop[0] = bi0;
	  to_next_drop += 1;
	  n_left_to_next_drop -= 1;

	  b0 = vlib_get_buffer (vm, bi0);

	  type = lisp_msg_type (vlib_buffer_get_current (b0));
	  switch (type)
	    {
	    case LISP_MAP_REPLY:
	      a = parse_map_reply (b0);
	      if (a)
		{
		  if (a->is_rloc_probe)
		    rloc_probe_rep_recv++;
		  queue_map_reply_for_processing (a);
		}
	      break;
	    case LISP_MAP_REQUEST:
	      process_map_request (vm, node, lcm, b0);
	      break;
	    case LISP_MAP_NOTIFY:
	      a = parse_map_notify (b0);
	      if (a)
		{
		  map_notifies_recv++;
		  queue_map_notify_for_processing (a);
		}
	      break;
	    default:
	      clib_warning ("Unsupported LISP message type %d", type);
	      break;
	    }

	  b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];

	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
	    {

	    }
	}

      vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
			   n_left_to_next_drop);
    }
  vlib_node_increment_counter (vm, node->node_index,
			       LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
			       rloc_probe_rep_recv);
  vlib_node_increment_counter (vm, node->node_index,
			       LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
			       map_notifies_recv);
  return from_frame->n_vectors;
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (lisp_cp_input_node) = {
  .function = lisp_cp_input,
  .name = "lisp-cp-input",
  .vector_size = sizeof (u32),
  .format_trace = format_lisp_cp_input_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = LISP_CP_INPUT_N_ERROR,
  .error_strings = lisp_cp_input_error_strings,

  .n_next_nodes = LISP_CP_INPUT_N_NEXT,

  .next_nodes = {
      [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
  },
};
/* *INDENT-ON* */

clib_error_t *
lisp_cp_init (vlib_main_t * vm)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  clib_error_t *error = 0;
  vlib_thread_main_t *vtm = vlib_get_thread_main ();
  u32 num_threads;

  if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
    return error;

  lcm->im4 = &ip4_main;
  lcm->im6 = &ip6_main;
  lcm->vlib_main = vm;
  lcm->vnet_main = vnet_get_main ();
  lcm->mreq_itr_rlocs = ~0;
  lcm->flags = 0;
  lcm->pitr_map_index = ~0;
  lcm->petr_map_index = ~0;
  clib_memset (&lcm->active_map_resolver, 0,
	       sizeof (lcm->active_map_resolver));
  clib_memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));

  gid_dictionary_init (&lcm->mapping_index_by_gid);
  lcm->do_map_resolver_election = 1;
  lcm->do_map_server_election = 1;
  lcm->map_request_mode = MR_MODE_DST_ONLY;

  num_threads = 1 /* main thread */  + vtm->n_threads;
  vec_validate (lcm->map_records_args_pool, num_threads - 1);

  /* default vrf mapped to vni 0 */
  hash_set (lcm->table_id_by_vni, 0, 0);
  hash_set (lcm->vni_by_table_id, 0, 0);

  u64 now = clib_cpu_time_now ();
  timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
  lcm->nsh_map_index = ~0;
  lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
  lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
  lcm->expired_map_registers = 0;
  lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
  lcm->flags |= LISP_FLAG_XTR_MODE;
  return 0;
}

static int
lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
		     lisp_api_stats_t * stat, lisp_stats_key_t * key,
		     u32 stats_index)
{
  vlib_counter_t v;
  vlib_combined_counter_main_t *cm = &lgm->counters;
  lisp_gpe_fwd_entry_key_t fwd_key;
  const lisp_gpe_tunnel_t *lgt;
  fwd_entry_t *fe;

  clib_memset (stat, 0, sizeof (*stat));
  clib_memset (&fwd_key, 0, sizeof (fwd_key));

  fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
  ASSERT (fe != 0);

  gid_to_dp_address (&fe->reid, &stat->deid);
  gid_to_dp_address (&fe->leid, &stat->seid);
  stat->vni = gid_address_vni (&fe->reid);

  lgt = lisp_gpe_tunnel_get (key->tunnel_index);
  stat->loc_rloc = lgt->key->lcl;
  stat->rmt_rloc = lgt->key->rmt;

  vlib_get_combined_counter (cm, stats_index, &v);
  stat->counters = v;
  return 1;
}

lisp_api_stats_t *
vnet_lisp_get_stats (void)
{
  lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_api_stats_t *stats = 0, stat;
  lisp_stats_key_t *key;
  u32 index;

  /* *INDENT-OFF* */
  hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
  {
    if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
      vec_add1 (stats, stat);
  });
  /* *INDENT-ON* */

  return stats;
}

static void *
send_map_request_thread_fn (void *arg)
{
  map_request_args_t *a = arg;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  if (a->is_resend)
    resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
  else
    send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);

  return 0;
}

static int
queue_map_request (gid_address_t * seid, gid_address_t * deid,
		   u8 smr_invoked, u8 is_resend)
{
  map_request_args_t a;

  a.is_resend = is_resend;
  gid_address_copy (&a.seid, seid);
  gid_address_copy (&a.deid, deid);
  a.smr_invoked = smr_invoked;

  vl_api_rpc_call_main_thread (send_map_request_thread_fn,
			       (u8 *) & a, sizeof (a));
  return 0;
}

/**
 * Take an action with a pending map request depending on expiration time
 * and re-try counters.
 */
static void
update_pending_request (pending_map_request_t * r, f64 dt)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_msmr_t *mr;

  if (r->time_to_expire - dt < 0)
    /* it's time to decide what to do with this pending request */
    {
      if (r->retries_num >= NUMBER_OF_RETRIES)
	/* too many retries -> assume current map resolver is not available */
	{
	  mr = get_map_resolver (&lcm->active_map_resolver);
	  if (!mr)
	    {
	      clib_warning ("Map resolver %U not found - probably deleted "
			    "by the user recently.", format_ip_address,
			    &lcm->active_map_resolver);
	    }
	  else
	    {
	      clib_warning ("map resolver %U is unreachable, ignoring",
			    format_ip_address, &lcm->active_map_resolver);

	      /* mark current map resolver unavailable so it won't be
	       * selected next time */
	      mr->is_down = 1;
	      mr->last_update = vlib_time_now (lcm->vlib_main);
	    }

	  reset_pending_mr_counters (r);
	  elect_map_resolver (lcm);

	  /* try to find a next eligible map resolver and re-send */
	  queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
			     1 /* resend */ );
	}
      else
	{
	  /* try again */
	  queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
			     1 /* resend */ );
	  r->retries_num++;
	  r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
	}
    }
  else
    r->time_to_expire -= dt;
}

static void
remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
{
  u64 *nonce;
  pending_map_request_t *pmr;
  u32 *to_be_removed = 0, *pmr_index;

  /* *INDENT-OFF* */
  pool_foreach (pmr, lcm->pending_map_requests_pool,
  ({
    if (pmr->to_be_removed)
      {
        clib_fifo_foreach (nonce, pmr->nonces, ({
          hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
        }));

        vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
      }
  }));
  /* *INDENT-ON* */

  vec_foreach (pmr_index, to_be_removed)
    pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);

  vec_free (to_be_removed);
}

static void
update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
{
  static f64 time_left = RLOC_PROBING_INTERVAL;

  if (!lcm->is_enabled || !lcm->rloc_probing)
    return;

  time_left -= dt;
  if (time_left <= 0)
    {
      time_left = RLOC_PROBING_INTERVAL;
      send_rloc_probes (lcm);
    }
}

static int
update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  lisp_msmr_t *ms;
  del_all[0] = 0;

  r->time_to_expire -= dt;

  if (r->time_to_expire < 0)
    {
      lcm->expired_map_registers++;

      if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
	{
	  ms = get_map_server (&lcm->active_map_server);
	  if (!ms)
	    {
	      clib_warning ("Map server %U not found - probably deleted "
			    "by the user recently.", format_ip_address,
			    &lcm->active_map_server);
	    }
	  else
	    {
	      clib_warning ("map server %U is unreachable, ignoring",
			    format_ip_address, &lcm->active_map_server);

	      /* mark current map server unavailable so it won't be
	       * elected next time */
	      ms->is_down = 1;
	      ms->last_update = vlib_time_now (lcm->vlib_main);
	    }

	  elect_map_server (lcm);

	  /* indication for deleting all pending map registers */
	  del_all[0] = 1;
	  lcm->expired_map_registers = 0;
	  return 0;
	}
      else
	{
	  /* delete pending map register */
	  return 0;
	}
    }
  return 1;
}

static void
update_map_register (lisp_cp_main_t * lcm, f64 dt)
{
  u32 *to_be_removed = 0, *pmr_index;
  static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
  static u64 mreg_sent_counter = 0;

  pending_map_register_t *pmr;
  u8 del_all = 0;

  if (!lcm->is_enabled || !lcm->map_registering)
    return;

  /* *INDENT-OFF* */
  pool_foreach (pmr, lcm->pending_map_registers_pool,
  ({
    if (!update_pending_map_register (pmr, dt, &del_all))
    {
      if (del_all)
        break;
      vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
    }
  }));
  /* *INDENT-ON* */

  if (del_all)
    {
      /* delete all pending map register messages so they won't
       * trigger another map server election.. */
      pool_free (lcm->pending_map_registers_pool);
      hash_free (lcm->map_register_messages_by_nonce);

      /* ..and trigger registration against next map server (if any) */
      time_left = 0;
    }
  else
    {
      vec_foreach (pmr_index, to_be_removed)
	pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
    }

  vec_free (to_be_removed);

  time_left -= dt;
  if (time_left <= 0)
    {
      if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
	time_left = MAP_REGISTER_INTERVAL;
      else
	{
	  mreg_sent_counter++;
	  time_left = QUICK_MAP_REGISTER_INTERVAL;
	}
      send_map_register (lcm, 1 /* want map notify */ );
    }
}

static uword
send_map_resolver_service (vlib_main_t * vm,
			   vlib_node_runtime_t * rt, vlib_frame_t * f)
{
  u32 *expired = 0;
  f64 period = 2.0;
  pending_map_request_t *pmr;
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  while (1)
    {
      vlib_process_wait_for_event_or_clock (vm, period);

      /* currently no signals are expected - just wait for clock */
      (void) vlib_process_get_events (vm, 0);

      /* *INDENT-OFF* */
      pool_foreach (pmr, lcm->pending_map_requests_pool,
      ({
        if (!pmr->to_be_removed)
          update_pending_request (pmr, period);
      }));
      /* *INDENT-ON* */

      remove_dead_pending_map_requests (lcm);

      update_map_register (lcm, period);
      update_rloc_probing (lcm, period);

      u64 now = clib_cpu_time_now ();

      expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
      if (vec_len (expired) > 0)
	{
	  u32 *mi = 0;
	  vec_foreach (mi, expired)
	  {
	    process_expired_mapping (lcm, mi[0]);
	  }
	  _vec_len (expired) = 0;
	}
    }

  /* unreachable */
  return 0;
}

vnet_api_error_t
vnet_lisp_stats_enable_disable (u8 enable)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  if (vnet_lisp_enable_disable_status () == 0)
    return VNET_API_ERROR_LISP_DISABLED;

  if (enable)
    lcm->flags |= LISP_FLAG_STATS_ENABLED;
  else
    lcm->flags &= ~LISP_FLAG_STATS_ENABLED;

  return 0;
}

u8
vnet_lisp_stats_enable_disable_state (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  if (vnet_lisp_enable_disable_status () == 0)
    return VNET_API_ERROR_LISP_DISABLED;

  return lcm->flags & LISP_FLAG_STATS_ENABLED;
}

void
vnet_lisp_create_retry_process (lisp_cp_main_t * lcm)
{
  if (lcm->retry_service_index)
    return;

  lcm->retry_service_index = vlib_process_create (vlib_get_main (),
						  "lisp-retry-service",
						  send_map_resolver_service,
						  16 /* stack_bytes */ );
}

u32
vnet_lisp_set_transport_protocol (u8 protocol)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();

  if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
      protocol > LISP_TRANSPORT_PROTOCOL_API)
    return VNET_API_ERROR_INVALID_ARGUMENT;

  lcm->transport_protocol = protocol;
  return 0;
}

lisp_transport_protocol_t
vnet_lisp_get_transport_protocol (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return lcm->transport_protocol;
}

int
vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
  u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
  u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;

  if (pitr_mode && is_enabled)
    return VNET_API_ERROR_INVALID_ARGUMENT;

  if (is_enabled && xtr_mode)
    return 0;
  if (!is_enabled && !xtr_mode)
    return 0;

  if (is_enabled)
    {
      if (!petr_mode)
	{
	  lisp_cp_register_dst_port (lcm->vlib_main);
	}
      lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
      lcm->flags |= LISP_FLAG_XTR_MODE;
    }
  else
    {
      if (!petr_mode)
	{
	  lisp_cp_unregister_dst_port (lcm->vlib_main);
	}
      lisp_cp_disable_l2_l3_ifaces (lcm);
      lcm->flags &= ~LISP_FLAG_XTR_MODE;
    }
  return 0;
}

int
vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
  u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;

  if (xtr_mode && is_enabled)
    return VNET_API_ERROR_INVALID_VALUE;

  if (is_enabled && pitr_mode)
    return 0;
  if (!is_enabled && !pitr_mode)
    return 0;

  if (is_enabled)
    {
      /* create iface, no default route */
      lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
      lcm->flags |= LISP_FLAG_PITR_MODE;
    }
  else
    {
      lisp_cp_disable_l2_l3_ifaces (lcm);
      lcm->flags &= ~LISP_FLAG_PITR_MODE;
    }
  return 0;
}

int
vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
  u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;

  if (is_enabled && petr_mode)
    return 0;
  if (!is_enabled && !petr_mode)
    return 0;

  if (is_enabled)
    {
      if (!xtr_mode)
	{
	  lisp_cp_register_dst_port (lcm->vlib_main);
	}
      lcm->flags |= LISP_FLAG_PETR_MODE;
    }
  else
    {
      if (!xtr_mode)
	{
	  lisp_cp_unregister_dst_port (lcm->vlib_main);
	}
      lcm->flags &= ~LISP_FLAG_PETR_MODE;
    }
  return 0;
}

u8
vnet_lisp_get_xtr_mode (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return (lcm->flags & LISP_FLAG_XTR_MODE);
}

u8
vnet_lisp_get_pitr_mode (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return (lcm->flags & LISP_FLAG_PITR_MODE);
}

u8
vnet_lisp_get_petr_mode (void)
{
  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
  return (lcm->flags & LISP_FLAG_PETR_MODE);
}

VLIB_INIT_FUNCTION (lisp_cp_init);

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */