public inbox for passt-dev@passt.top
 help / color / mirror / code / Atom feed
blob b2da6ad621033524fe67ec205e791196af706ee3 11544 bytes (raw)

  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
 
# SPDX-License-Identifier: GPL-2.0-or-later
#
# PASST - Plug A Simple Socket Transport
#  for qemu/UNIX domain socket mode
#
# PASTA - Pack A Subtle Tap Abstraction
#  for network namespace/tap device mode
#
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>

VERSION ?= $(shell git describe --tags HEAD 2>/dev/null || echo "unknown\ version")

# Does the target platform allow IPv4 connections to be handled via
# the IPv6 socket API? (Linux does)
DUAL_STACK_SOCKETS := 1

RLIMIT_STACK_VAL := $(shell /bin/sh -c 'ulimit -s')
ifeq ($(RLIMIT_STACK_VAL),unlimited)
RLIMIT_STACK_VAL := 1024
endif

TARGET ?= $(shell $(CC) -dumpmachine)
# Get 'uname -m'-like architecture description for target
TARGET_ARCH := $(shell echo $(TARGET) | cut -f1 -d- | tr [A-Z] [a-z])
TARGET_ARCH := $(shell echo $(TARGET_ARCH) | sed 's/powerpc/ppc/')

AUDIT_ARCH := $(shell echo $(TARGET_ARCH) | tr [a-z] [A-Z] | sed 's/^ARM.*/ARM/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/I[456]86/I386/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/PPC64/PPC/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/PPCLE/PPC64LE/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/MIPS64EL/MIPSEL64/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/HPPA/PARISC/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/SH4/SH/')

FLAGS := -Wall -Wextra -Wno-format-zero-length
FLAGS += -pedantic -std=c11 -D_XOPEN_SOURCE=700 -D_GNU_SOURCE
FLAGS += -D_FORTIFY_SOURCE=2 -O2 -pie -fPIE
FLAGS += -DPAGE_SIZE=$(shell getconf PAGE_SIZE)
FLAGS += -DNETNS_RUN_DIR=\"/run/netns\"
FLAGS += -DPASST_AUDIT_ARCH=AUDIT_ARCH_$(AUDIT_ARCH)
FLAGS += -DRLIMIT_STACK_VAL=$(RLIMIT_STACK_VAL)
FLAGS += -DARCH=\"$(TARGET_ARCH)\"
FLAGS += -DVERSION=\"$(VERSION)\"
FLAGS += -DDUAL_STACK_SOCKETS=$(DUAL_STACK_SOCKETS)

PASST_SRCS = arch.c arp.c checksum.c conf.c dhcp.c dhcpv6.c flow.c fwd.c \
	icmp.c igmp.c inany.c iov.c ip.c isolation.c lineread.c log.c mld.c \
	ndp.c netlink.c packet.c passt.c pasta.c pcap.c pif.c tap.c tcp.c \
	tcp_buf.c tcp_splice.c udp.c util.c vhost_user.c virtio.c
QRAP_SRCS = qrap.c
SRCS = $(PASST_SRCS) $(QRAP_SRCS)

MANPAGES = passt.1 pasta.1 qrap.1

PASST_HEADERS = arch.h arp.h checksum.h conf.h dhcp.h dhcpv6.h flow.h fwd.h \
	flow_table.h icmp.h icmp_flow.h inany.h iov.h ip.h isolation.h \
	lineread.h log.h ndp.h netlink.h packet.h passt.h pasta.h pcap.h pif.h \
	siphash.h tap.h tcp.h tcp_buf.h tcp_conn.h tcp_internal.h tcp_splice.h \
	udp.h util.h vhost_user.h virtio.h
HEADERS = $(PASST_HEADERS) seccomp.h

C := \#include <linux/tcp.h>\nstruct tcp_info x = { .tcpi_snd_wnd = 0 };
ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
	FLAGS += -DHAS_SND_WND
endif

C := \#include <linux/tcp.h>\nstruct tcp_info x = { .tcpi_bytes_acked = 0 };
ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
	FLAGS += -DHAS_BYTES_ACKED
endif

C := \#include <linux/tcp.h>\nstruct tcp_info x = { .tcpi_min_rtt = 0 };
ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
	FLAGS += -DHAS_MIN_RTT
endif

C := \#include <sys/random.h>\nint main(){int a=getrandom(0, 0, 0);}
ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
	FLAGS += -DHAS_GETRANDOM
endif

ifeq ($(shell :|$(CC) -fstack-protector-strong -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
	FLAGS += -fstack-protector-strong
endif

C := \#define _GNU_SOURCE\n\#include <fcntl.h>\nint x = FALLOC_FL_COLLAPSE_RANGE;
ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
	EXTRA_SYSCALLS += fallocate
endif

prefix		?= /usr/local
exec_prefix	?= $(prefix)
bindir		?= $(exec_prefix)/bin
datarootdir	?= $(prefix)/share
docdir		?= $(datarootdir)/doc/passt
mandir		?= $(datarootdir)/man
man1dir		?= $(mandir)/man1

ifeq ($(TARGET_ARCH),x86_64)
BIN := passt passt.avx2 pasta pasta.avx2 qrap
else
BIN := passt pasta qrap
endif

all: $(BIN) $(MANPAGES) docs

static: FLAGS += -static -DGLIBC_NO_STATIC_NSS
static: clean all

seccomp.h: seccomp.sh $(PASST_SRCS) $(PASST_HEADERS)
	@ EXTRA_SYSCALLS="$(EXTRA_SYSCALLS)" ARCH="$(TARGET_ARCH)" CC="$(CC)" ./seccomp.sh $(PASST_SRCS) $(PASST_HEADERS)

passt: $(PASST_SRCS) $(HEADERS)
	$(CC) $(FLAGS) $(CFLAGS) $(CPPFLAGS) $(PASST_SRCS) -o passt $(LDFLAGS)

passt.avx2: FLAGS += -Ofast -mavx2 -ftree-vectorize -funroll-loops
passt.avx2: $(PASST_SRCS) $(HEADERS)
	$(CC) $(filter-out -O2,$(FLAGS)) $(CFLAGS) $(CPPFLAGS) \
		$(PASST_SRCS) -o passt.avx2 $(LDFLAGS)

passt.avx2: passt

pasta.avx2 pasta.1 pasta: pasta%: passt%
	ln -sf $< $@

qrap: $(QRAP_SRCS) passt.h
	$(CC) $(FLAGS) $(CFLAGS) $(CPPFLAGS) $(QRAP_SRCS) -o qrap $(LDFLAGS)

valgrind: EXTRA_SYSCALLS += rt_sigprocmask rt_sigtimedwait rt_sigaction	\
			    getpid gettid kill clock_gettime mmap	\
			    munmap open unlink gettimeofday futex
valgrind: FLAGS += -g -DVALGRIND
valgrind: all

.PHONY: clean
clean:
	$(RM) $(BIN) *~ *.o seccomp.h pasta.1 \
		passt.tar passt.tar.gz *.deb *.rpm \
		passt.pid README.plain.md

install: $(BIN) $(MANPAGES) docs
	mkdir -p $(DESTDIR)$(bindir) $(DESTDIR)$(man1dir)
	cp -d $(BIN) $(DESTDIR)$(bindir)
	cp -d $(MANPAGES) $(DESTDIR)$(man1dir)
	mkdir -p $(DESTDIR)$(docdir)
	cp -d README.plain.md $(DESTDIR)$(docdir)/README.md
	cp -d doc/demo.sh $(DESTDIR)$(docdir)

uninstall:
	$(RM) $(BIN:%=$(DESTDIR)$(prefix)/bin/%)
	$(RM) $(MANPAGES:%=$(DESTDIR)$(man1dir)/%)
	$(RM) $(DESTDIR)$(docdir)/README.md
	$(RM) $(DESTDIR)$(docdir)/demo.sh
	-rmdir $(DESTDIR)$(docdir)

pkgs: static
	tar cf passt.tar -P --xform 's//\/usr\/bin\//' $(BIN)
	tar rf passt.tar -P --xform 's//\/usr\/share\/man\/man1\//' \
		$(MANPAGES)
	gzip passt.tar
	EMAIL="sbrivio@redhat.com" fakeroot alien --to-deb \
		--description="User-mode networking for VMs and namespaces" \
		-k --version=$(shell git rev-parse --short HEAD) \
		passt.tar.gz
	fakeroot alien --to-rpm --target=$(shell uname -m) \
		--description="User-mode networking for VMs and namespaces" \
		-k --version=g$(shell git rev-parse --short HEAD) passt.tar.gz

# TODO: This hack makes a "plain" Markdown version of README.md that can be
# reasonably shipped as documentation file, while the current README.md is
# definitely intended for web browser consumption. It should probably work the
# other way around: the web version should be obtained by adding HTML and
# JavaScript portions to a plain Markdown, instead. However, cgit needs to use
# a file in the git tree. Find a better way around this.
docs: README.md
	@(								\
		skip=0;							\
		while read l; do					\
			case $$l in					\
			"## Demo")	exit 0		;;		\
			"<!"*)				;;		\
			"</"*)		skip=1		;;		\
			"<"*)		skip=2		;;		\
			esac;						\
									\
			[ $$skip -eq 0 ]	&& echo "$$l";		\
			[ $$skip -eq 1 ]	&& skip=0;		\
		done < README.md;					\
	) > README.plain.md

# Checkers currently disabled for clang-tidy:
# - llvmlibc-restrict-system-libc-headers
#	TODO: this is Linux-only for the moment, nice to fix eventually
#
# - google-readability-braces-around-statements
# - hicpp-braces-around-statements
# - readability-braces-around-statements
#	Debatable whether that improves readability, right now it would look
#	like a mess
#
# - readability-magic-numbers
# - cppcoreguidelines-avoid-magic-numbers
#	TODO: in most cases they are justified, but probably not everywhere
#
# - clang-analyzer-valist.Uninitialized
#	TODO: enable once https://bugs.llvm.org/show_bug.cgi?id=41311 is fixed
#
# - clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling
#	Probably not doable to impement this without plain memcpy(), memset()
#
# - cppcoreguidelines-init-variables
#	Dubious value, would kill readability
#
# - hicpp-signed-bitwise
#	Those are needed for syscalls, epoll_wait flags, etc.
#
# - llvm-include-order
#	TODO: not really important, but nice to fix eventually
#
# - readability-isolate-declaration
#	Dubious value, would kill readability
#
# - bugprone-narrowing-conversions
# - cppcoreguidelines-narrowing-conversions
#	TODO: nice to fix eventually
#
# - cppcoreguidelines-avoid-non-const-global-variables
#	TODO: check, fix, and more in general constify wherever possible
#
# - altera-unroll-loops
# - altera-id-dependent-backward-branch
#	TODO: check paths where it might make sense to improve performance
#
# - bugprone-easily-swappable-parameters
#	Not much can be done about them other than being careful
#
# - readability-function-cognitive-complexity
#	TODO: split reported functions
#
# - altera-struct-pack-align
#	"Poor" alignment needed for structs reflecting message formats/headers
#
# - concurrency-mt-unsafe
#	TODO: check again if multithreading is implemented
#
# - readability-identifier-length
#	Complains about any identifier <3 characters, reasonable for
#	globals, pointlessly verbose for locals and parameters.
#
# - bugprone-assignment-in-if-condition
#	Dubious value over the compiler's built-in warning.  Would
#	increase verbosity.
#
# - misc-include-cleaner
#	Wants to include headers which *directly* provide the things
#	we use.  That sounds nice, but means it will often want a OS
#	specific header instead of a mostly standard one, such as
#	<linux/limits.h> instead of <limits.h>.
#
# - cppcoreguidelines-macro-to-enum
#	Want to replace all #defines of integers with enums.  Kind of
#	makes sense when those defines form an enum-like set, but
#	weird for cases like standalone constants, and causes other
#	awkwardness for a bunch of cases we use

clang-tidy: $(SRCS) $(HEADERS)
	clang-tidy -checks=*,-modernize-*,\
	-clang-analyzer-valist.Uninitialized,\
	-cppcoreguidelines-init-variables,\
	-bugprone-assignment-in-if-condition,\
	-google-readability-braces-around-statements,\
	-hicpp-braces-around-statements,\
	-readability-braces-around-statements,\
	-readability-magic-numbers,\
	-llvmlibc-restrict-system-libc-headers,\
	-hicpp-signed-bitwise,\
	-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,\
	-llvm-include-order,\
	-cppcoreguidelines-avoid-magic-numbers,\
	-readability-isolate-declaration,\
	-bugprone-narrowing-conversions,\
	-cppcoreguidelines-narrowing-conversions,\
	-cppcoreguidelines-avoid-non-const-global-variables,\
	-altera-unroll-loops,-altera-id-dependent-backward-branch,\
	-bugprone-easily-swappable-parameters,\
	-readability-function-cognitive-complexity,\
	-altera-struct-pack-align,\
	-concurrency-mt-unsafe,\
	-readability-identifier-length,\
	-misc-include-cleaner,\
	-cppcoreguidelines-macro-to-enum \
	-config='{CheckOptions: [{key: bugprone-suspicious-string-compare.WarnOnImplicitComparison, value: "false"}]}' \
	--warnings-as-errors=* $(SRCS) -- $(filter-out -pie,$(FLAGS) $(CFLAGS) $(CPPFLAGS)) -DCLANG_TIDY_58992

SYSTEM_INCLUDES := /usr/include $(wildcard /usr/include/$(TARGET))
ifeq ($(shell $(CC) -v 2>&1 | grep -c "gcc version"),1)
VER := $(shell $(CC) -dumpversion)
SYSTEM_INCLUDES += /usr/lib/gcc/$(TARGET)/$(VER)/include
endif
cppcheck: $(SRCS) $(HEADERS)
	if cppcheck --check-level=exhaustive /dev/null > /dev/null 2>&1; then \
		CPPCHECK_EXHAUSTIVE="--check-level=exhaustive";		\
	else								\
		CPPCHECK_EXHAUSTIVE=;					\
	fi;								\
	cppcheck --std=c11 --error-exitcode=1 --enable=all --force	\
	--inconclusive --library=posix --quiet				\
	$${CPPCHECK_EXHAUSTIVE}						\
	$(SYSTEM_INCLUDES:%=-I%)					\
	$(SYSTEM_INCLUDES:%=--config-exclude=%)				\
	$(SYSTEM_INCLUDES:%=--suppress=*:%/*)				\
	$(SYSTEM_INCLUDES:%=--suppress=unmatchedSuppression:%/*)	\
	--inline-suppr							\
	--suppress=unusedStructMember					\
	$(filter -D%,$(FLAGS) $(CFLAGS) $(CPPFLAGS))			\
	$(SRCS) $(HEADERS)

debug log:

solving b2da6ad62103 ...
found b2da6ad62103 in https://archives.passt.top/passt-dev/20240621145640.1914287-4-lvivier@redhat.com/ ||
	https://archives.passt.top/passt-dev/20240712153244.831436-4-lvivier@redhat.com/
found 39613a7cf1f2 in https://archives.passt.top/passt-dev/20240621145640.1914287-3-lvivier@redhat.com/ ||
	https://archives.passt.top/passt-dev/20240712153244.831436-3-lvivier@redhat.com/
found 09fc461d087e in https://passt.top/passt
preparing index
index prepared:
100644 09fc461d087e7c736f75d447a43cf0b6d9eaf1f6	Makefile

applying [1/2] https://archives.passt.top/passt-dev/20240621145640.1914287-3-lvivier@redhat.com/
diff --git a/Makefile b/Makefile
index 09fc461d087e..39613a7cf1f2 100644

Checking patch Makefile...
Applied patch Makefile cleanly.

skipping https://archives.passt.top/passt-dev/20240712153244.831436-3-lvivier@redhat.com/ for 39613a7cf1f2
index at:
100644 39613a7cf1f2efc4c78f6d80aae4ba1d89ff0293	Makefile

applying [2/2] https://archives.passt.top/passt-dev/20240621145640.1914287-4-lvivier@redhat.com/
diff --git a/Makefile b/Makefile
index 39613a7cf1f2..b2da6ad62103 100644

Checking patch Makefile...
Applied patch Makefile cleanly.

skipping https://archives.passt.top/passt-dev/20240712153244.831436-4-lvivier@redhat.com/ for b2da6ad62103
index at:
100644 b2da6ad621033524fe67ec205e791196af706ee3	Makefile

Code repositories for project(s) associated with this public inbox

	https://passt.top/passt

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for IMAP folder(s).