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
| | # 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 $(TARGET_ARCH) | sed 's/powerpc/ppc/')
# On some systems enabling optimization also enables source fortification,
# automagically. Do not override it.
FORTIFY_FLAG :=
ifeq ($(shell $(CC) -O2 -dM -E - < /dev/null 2>&1 | grep ' _FORTIFY_SOURCE ' > /dev/null; echo $$?),1)
FORTIFY_FLAG := -D_FORTIFY_SOURCE=2
endif
FLAGS := -Wall -Wextra -Wno-format-zero-length
FLAGS += -pedantic -std=c11 -D_XOPEN_SOURCE=700 -D_GNU_SOURCE
FLAGS += $(FORTIFY_FLAG) -O2 -pie -fPIE
FLAGS += -DPAGE_SIZE=$(shell getconf PAGE_SIZE)
FLAGS += -DRLIMIT_STACK_VAL=$(RLIMIT_STACK_VAL)
FLAGS += -DARCH=\"$(TARGET_ARCH)\"
FLAGS += -DVERSION=\"$(VERSION)\"
FLAGS += -DDUAL_STACK_SOCKETS=$(DUAL_STACK_SOCKETS)
PASST_SRCS = arch.c arp.c checksum.c conf.c dhcp.c dhcpv6.c flow.c fwd.c \
icmp.c igmp.c inany.c iov.c ip.c isolation.c lineread.c log.c mld.c \
ndp.c netlink.c packet.c passt.c pasta.c pcap.c pif.c tap.c tcp.c \
tcp_buf.c tcp_splice.c udp.c udp_flow.c util.c
QRAP_SRCS = qrap.c
SRCS = $(PASST_SRCS) $(QRAP_SRCS)
MANPAGES = passt.1 pasta.1 qrap.1
PASST_HEADERS = arch.h arp.h checksum.h conf.h dhcp.h dhcpv6.h flow.h fwd.h \
flow_table.h icmp.h icmp_flow.h inany.h iov.h ip.h isolation.h \
lineread.h log.h ndp.h netlink.h packet.h passt.h pasta.h pcap.h pif.h \
siphash.h tap.h tcp.h tcp_buf.h tcp_conn.h tcp_internal.h tcp_splice.h \
udp.h udp_flow.h util.h
HEADERS = $(PASST_HEADERS) seccomp.h
C := \#include <sys/random.h>\nint main(){int a=getrandom(0, 0, 0);}
ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),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 \
rt_sigreturn getpid gettid kill clock_gettime mmap \
mmap2 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
clang-tidy: $(PASST_SRCS) $(HEADERS)
clang-tidy $(PASST_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: $(PASST_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)) \
$(PASST_SRCS) $(HEADERS)
|