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https://passt.top/passt
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745a9ba428
This should be convenient for users managing filesystem-bound network namespaces: monitor the base directory of the namespace and exit if the namespace given as PATH or NAME target is deleted. We can't add an inotify watch directly on the namespace directory, that won't work with nsfs. Add an option to disable this behaviour, --no-netns-quit. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
254 lines
8.6 KiB
Makefile
254 lines
8.6 KiB
Makefile
# SPDX-License-Identifier: AGPL-3.0-or-later
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#
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# PASST - Plug A Simple Socket Transport
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# for qemu/UNIX domain socket mode
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#
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# PASTA - Pack A Subtle Tap Abstraction
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# for network namespace/tap device mode
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#
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# Copyright (c) 2021 Red Hat GmbH
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# Author: Stefano Brivio <sbrivio@redhat.com>
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RLIMIT_STACK_VAL := $(shell /bin/sh -c 'ulimit -s')
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ifeq ($(RLIMIT_STACK_VAL),unlimited)
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RLIMIT_STACK_VAL := 1024
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endif
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AUDIT_ARCH := $(shell uname -m | tr [a-z] [A-Z])
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AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/I[456]86/I386/')
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AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/PPC64/PPC/')
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AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/PPCLE/PPC64LE/')
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CFLAGS += -Wall -Wextra -pedantic -std=c99 -D_XOPEN_SOURCE=700 -D_GNU_SOURCE
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CFLAGS += -DPAGE_SIZE=$(shell getconf PAGE_SIZE)
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CFLAGS += -DNETNS_RUN_DIR=\"/run/netns\"
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CFLAGS += -DPASST_AUDIT_ARCH=AUDIT_ARCH_$(AUDIT_ARCH)
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CFLAGS += -DRLIMIT_STACK_VAL=$(RLIMIT_STACK_VAL)
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CFLAGS += -DARCH=\"$(shell uname -m)\"
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# On gcc 11.2, with -O2 and -flto, tcp_hash() and siphash_20b(), if inlined,
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# seem to be hitting something similar to:
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78993
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# from the pointer arithmetic used from the tcp_tap_handler() path to get the
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# remote connection address.
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ifeq ($(shell $(CC) -dumpversion),11)
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ifneq (,$(filter -flto%,$(CFLAGS)))
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ifneq (,$(filter -O2,$(CFLAGS)))
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CFLAGS += -DTCP_HASH_NOINLINE
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CFLAGS += -DSIPHASH_20B_NOINLINE
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endif
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endif
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endif
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C := \#include <linux/tcp.h>\nstruct tcp_info x = { .tcpi_snd_wnd = 0 };
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ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
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CFLAGS += -DHAS_SND_WND
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endif
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C := \#include <linux/tcp.h>\nstruct tcp_info x = { .tcpi_bytes_acked = 0 };
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ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
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CFLAGS += -DHAS_BYTES_ACKED
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endif
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C := \#include <linux/tcp.h>\nstruct tcp_info x = { .tcpi_min_rtt = 0 };
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ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
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CFLAGS += -DHAS_MIN_RTT
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endif
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C := \#include <sys/random.h>\nint main(){int a=getrandom(0, 0, 0);}
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ifeq ($(shell printf "$(C)" | $(CC) -S -xc - -o - >/dev/null 2>&1; echo $$?),0)
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CFLAGS += -DHAS_GETRANDOM
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endif
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prefix ?= /usr/local
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all: passt pasta qrap
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avx2: CFLAGS += -Ofast -mavx2 -ftree-vectorize -funroll-loops
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avx2: clean all
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static: CFLAGS += -static -DGLIBC_NO_STATIC_NSS
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static: clean all
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seccomp.h: *.c $(filter-out seccomp.h,$(wildcard *.h))
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@ ./seccomp.sh
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passt: $(filter-out qrap.c,$(wildcard *.c)) \
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$(filter-out qrap.h,$(wildcard *.h)) seccomp.h
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$(CC) $(CFLAGS) $(filter-out qrap.c,$(wildcard *.c)) -o passt
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pasta: passt
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ln -s passt pasta
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ln -s passt.1 pasta.1
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qrap: qrap.c passt.h
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$(CC) $(CFLAGS) \
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qrap.c -o qrap
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.PHONY: clean
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clean:
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-${RM} passt *.o seccomp.h qrap pasta pasta.1 \
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passt.tar passt.tar.gz *.deb *.rpm
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install: passt pasta qrap
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mkdir -p $(DESTDIR)$(prefix)/bin $(DESTDIR)$(prefix)/share/man/man1
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cp -d passt pasta qrap $(DESTDIR)$(prefix)/bin
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cp -d passt.1 pasta.1 qrap.1 $(DESTDIR)$(prefix)/share/man/man1
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uninstall:
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-${RM} $(DESTDIR)$(prefix)/bin/passt
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-${RM} $(DESTDIR)$(prefix)/bin/pasta
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-${RM} $(DESTDIR)$(prefix)/bin/qrap
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-${RM} $(DESTDIR)$(prefix)/share/man/man1/passt.1
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-${RM} $(DESTDIR)$(prefix)/share/man/man1/pasta.1
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-${RM} $(DESTDIR)$(prefix)/share/man/man1/qrap.1
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pkgs:
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tar cf passt.tar -P --xform 's//\/usr\/bin\//' passt pasta qrap
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tar rf passt.tar -P --xform 's//\/usr\/share\/man\/man1\//' \
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passt.1 pasta.1 qrap.1
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gzip passt.tar
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EMAIL="sbrivio@redhat.com" fakeroot alien --to-deb \
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--description="User-mode networking for VMs and namespaces" \
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-k --version=$(shell git rev-parse --short HEAD) \
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passt.tar.gz
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fakeroot alien --to-rpm --target=$(shell uname -m) \
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--description="User-mode networking for VMs and namespaces" \
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-k --version=g$(shell git rev-parse --short HEAD) passt.tar.gz
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# Checkers currently disabled for clang-tidy:
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# - llvmlibc-restrict-system-libc-headers
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# TODO: this is Linux-only for the moment, nice to fix eventually
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#
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# - bugprone-macro-parentheses
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# - google-readability-braces-around-statements
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# - hicpp-braces-around-statements
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# - readability-braces-around-statements
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# Debatable whether that improves readability, right now it would look
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# like a mess
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#
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# - readability-magic-numbers
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# - cppcoreguidelines-avoid-magic-numbers
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# TODO: in most cases they are justified, but probably not everywhere
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#
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# - clang-analyzer-valist.Uninitialized
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# TODO: enable once https://bugs.llvm.org/show_bug.cgi?id=41311 is fixed
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#
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# - clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling
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# Probably not doable to impement this without plain memcpy(), memset()
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#
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# - cppcoreguidelines-init-variables
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# Dubious value, would kill readability
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#
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# - hicpp-signed-bitwise
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# Those are needed for syscalls, epoll_wait flags, etc.
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#
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# - llvm-include-order
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# TODO: not really important, but nice to fix eventually
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#
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# - readability-isolate-declaration
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# Dubious value, would kill readability
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#
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# - android-cloexec-open
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# - android-cloexec-pipe
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# - android-cloexec-pipe2
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# - android-cloexec-epoll-create1
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# - android-cloexec-inotify-init1
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# TODO: check, fix except for the few cases where we need to share fds
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#
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# - bugprone-narrowing-conversions
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# - cppcoreguidelines-narrowing-conversions
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# TODO: nice to fix eventually
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#
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# - cppcoreguidelines-avoid-non-const-global-variables
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# TODO: check, fix, and more in general constify wherever possible
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#
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# - bugprone-suspicious-string-compare
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# Return value of memcmp(), not really suspicious
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#
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# - altera-unroll-loops
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# - altera-id-dependent-backward-branch
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# TODO: check paths where it might make sense to improve performance
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#
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# - bugprone-easily-swappable-parameters
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# Not much can be done about them other than being careful
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#
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# - readability-function-cognitive-complexity
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# TODO: split reported functions
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#
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# - altera-struct-pack-align
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# "Poor" alignment needed for structs reflecting message formats/headers
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#
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# - concurrency-mt-unsafe
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# TODO: check again if multithreading is implemented
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clang-tidy: $(wildcard *.c) $(wildcard *.h)
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clang-tidy -checks=*,-modernize-*,\
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-clang-analyzer-valist.Uninitialized,\
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-cppcoreguidelines-init-variables,\
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-bugprone-macro-parentheses,\
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-google-readability-braces-around-statements,\
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-hicpp-braces-around-statements,\
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-readability-braces-around-statements,\
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-readability-magic-numbers,\
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-llvmlibc-restrict-system-libc-headers,\
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-hicpp-signed-bitwise,\
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-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling,\
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-llvm-include-order,\
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-cppcoreguidelines-avoid-magic-numbers,\
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-readability-isolate-declaration,\
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-android-cloexec-open,-android-cloexec-pipe,-android-cloexec-pipe2,\
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-android-cloexec-epoll-create1,-android-cloexec-inotify-init1,\
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-bugprone-narrowing-conversions,\
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-cppcoreguidelines-narrowing-conversions,\
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-cppcoreguidelines-avoid-non-const-global-variables,\
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-bugprone-suspicious-string-compare,\
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-altera-unroll-loops,-altera-id-dependent-backward-branch,\
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-bugprone-easily-swappable-parameters,\
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-readability-function-cognitive-complexity,\
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-altera-struct-pack-align,\
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-concurrency-mt-unsafe \
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--warnings-as-errors=* $(wildcard *.c) -- $(CFLAGS)
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ifeq ($(shell $(CC) -v 2>&1 | grep -c "gcc version"),1)
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TARGET := $(shell ${CC} -v 2>&1 | sed -n 's/Target: \(.*\)/\1/p')
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VER := $(shell $(CC) -dumpversion)
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EXTRA_INCLUDES := /usr/lib/gcc/$(TARGET)/$(VER)/include
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EXTRA_INCLUDES_OPT := -I$(EXTRA_INCLUDES)
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else
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EXTRA_INCLUDES_OPT :=
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endif
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cppcheck: $(wildcard *.c) $(wildcard *.h)
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cppcheck --std=c99 --error-exitcode=1 --enable=all --force \
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--inconclusive --library=posix \
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-I/usr/include $(EXTRA_INCLUDES_OPT) \
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\
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--suppress=syntaxError:/usr/include/stdlib.h \
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--suppress=missingIncludeSystem \
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--suppress="*:$(EXTRA_INCLUDES)/avx512fintrin.h" \
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--suppress="*:$(EXTRA_INCLUDES)/xmmintrin.h" \
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--suppress="*:$(EXTRA_INCLUDES)/emmintrin.h" \
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--suppress="*:$(EXTRA_INCLUDES)/avxintrin.h" \
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--suppress="*:$(EXTRA_INCLUDES)/bmiintrin.h" \
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\
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--suppress=objectIndex:tcp.c --suppress=objectIndex:udp.c \
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--suppress=va_list_usedBeforeStarted:util.c \
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--suppress=unusedFunction \
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--suppress=knownConditionTrueFalse:conf.c \
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--suppress=strtokCalled:conf.c --suppress=strtokCalled:qrap.c \
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--suppress=getpwnamCalled:passt.c \
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--suppress=localtimeCalled:pcap.c \
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--suppress=unusedStructMember:pcap.c \
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--suppress=funcArgNamesDifferent:util.h \
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\
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--suppress=unmatchedSuppression:conf.c \
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--suppress=unmatchedSuppression:passt.c \
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--suppress=unmatchedSuppression:pcap.c \
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--suppress=unmatchedSuppression:qrap.c \
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--suppress=unmatchedSuppression:tcp.c \
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--suppress=unmatchedSuppression:udp.c \
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--suppress=unmatchedSuppression:util.c \
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--suppress=unmatchedSuppression:util.h \
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$(filter -D%,$(CFLAGS)) \
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.
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