Re: [PATCH net] samples/bpf: fix a build issue
On 07/10/2017 10:51 PM, Yonghong Song wrote: On 7/10/17 1:27 PM, Daniel Borkmann wrote: On 07/10/2017 10:12 PM, Yonghong Song wrote: From: Yonghong Song With latest net-next: clang -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -Isamples/bpf \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -Wno-compare-distinct-pointer-types \ -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option \ -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found ^~ 1 error generated. net has the same issue. Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h and move it to samples/bpf/ directory so that it can used by both selftests/bpf and samples/bpf. The existing samples/bpf/bpf_helpers.h is already used by both. Signed-off-by: Yonghong Song --- {tools/testing/selftests => samples}/bpf/bpf_endian.h | 14 ++ samples/bpf/Makefile already does: HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ If needed we should rather extend the sample's Makefile to pull in bpf_endian.h also for clang generated files, but not the other way round. It's both kind of messy, but kernel selftests should not need to include or depend upon some sample code. Sounds good. I will then move bpf_helpers.h to selftests as well so samples/bpf will depend on selftests/bpf, but not the other way around. Okay, that's fine by me. (We can later also move some of the test cases over to selftests, so that they get generally more coverage.) Thanks, Yonghong!
Re: [PATCH net] samples/bpf: fix a build issue
On 7/10/17 1:27 PM, Daniel Borkmann wrote: On 07/10/2017 10:12 PM, Yonghong Song wrote: From: Yonghong Song With latest net-next: clang -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -Isamples/bpf \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -Wno-compare-distinct-pointer-types \ -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option \ -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found ^~ 1 error generated. net has the same issue. Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h and move it to samples/bpf/ directory so that it can used by both selftests/bpf and samples/bpf. The existing samples/bpf/bpf_helpers.h is already used by both. Signed-off-by: Yonghong Song --- {tools/testing/selftests => samples}/bpf/bpf_endian.h | 14 ++ samples/bpf/Makefile already does: HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ If needed we should rather extend the sample's Makefile to pull in bpf_endian.h also for clang generated files, but not the other way round. It's both kind of messy, but kernel selftests should not need to include or depend upon some sample code. Sounds good. I will then move bpf_helpers.h to selftests as well so samples/bpf will depend on selftests/bpf, but not the other way around. Other than that looks good to me. tools/testing/selftests/bpf/Makefile | 3 ++- 2 files changed, 16 insertions(+), 1 deletion(-) rename {tools/testing/selftests => samples}/bpf/bpf_endian.h (73%) diff --git a/tools/testing/selftests/bpf/bpf_endian.h b/samples/bpf/bpf_endian.h similarity index 73% rename from tools/testing/selftests/bpf/bpf_endian.h rename to samples/bpf/bpf_endian.h index 487cbfb..74af266 100644 --- a/tools/testing/selftests/bpf/bpf_endian.h +++ b/samples/bpf/bpf_endian.h @@ -23,11 +23,19 @@ # define __bpf_htons(x)__builtin_bswap16(x) # define __bpf_constant_ntohs(x)___constant_swab16(x) # define __bpf_constant_htons(x)___constant_swab16(x) +# define __bpf_ntohl(x)__builtin_bswap32(x) +# define __bpf_htonl(x)__builtin_bswap32(x) +# define __bpf_constant_ntohl(x)___constant_swab32(x) +# define __bpf_constant_htonl(x)___constant_swab32(x) #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ # define __bpf_ntohs(x)(x) # define __bpf_htons(x)(x) # define __bpf_constant_ntohs(x)(x) # define __bpf_constant_htons(x)(x) +# define __bpf_ntohl(x)(x) +# define __bpf_htonl(x)(x) +# define __bpf_constant_ntohl(x)(x) +# define __bpf_constant_htonl(x)(x) #else # error "Fix your compiler's __BYTE_ORDER__?!" #endif @@ -38,5 +46,11 @@ #define bpf_ntohs(x)\ (__builtin_constant_p(x) ?\ __bpf_constant_ntohs(x) : __bpf_ntohs(x)) +#define bpf_htonl(x)\ +(__builtin_constant_p(x) ?\ + __bpf_constant_htonl(x) : __bpf_htonl(x)) +#define bpf_ntohl(x)\ +(__builtin_constant_p(x) ?\ + __bpf_constant_ntohl(x) : __bpf_ntohl(x)) #endif /* __BPF_ENDIAN__ */ diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 2ca51a8..f263c6b 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -8,7 +8,8 @@ ifneq ($(wildcard $(GENHDR)),) GENFLAGS := -DHAVE_GENHDR endif -CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include +CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ +-I../../../../samples/bpf LDLIBS += -lcap -lelf TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
Re: [PATCH net] samples/bpf: fix a build issue
On 07/10/2017 10:12 PM, Yonghong Song wrote: From: Yonghong Song With latest net-next: clang -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -Isamples/bpf \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -Wno-compare-distinct-pointer-types \ -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option \ -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found ^~ 1 error generated. net has the same issue. Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h and move it to samples/bpf/ directory so that it can used by both selftests/bpf and samples/bpf. The existing samples/bpf/bpf_helpers.h is already used by both. Signed-off-by: Yonghong Song --- {tools/testing/selftests => samples}/bpf/bpf_endian.h | 14 ++ samples/bpf/Makefile already does: HOSTCFLAGS += -I$(srctree)/tools/testing/selftests/bpf/ If needed we should rather extend the sample's Makefile to pull in bpf_endian.h also for clang generated files, but not the other way round. It's both kind of messy, but kernel selftests should not need to include or depend upon some sample code. Other than that looks good to me. tools/testing/selftests/bpf/Makefile | 3 ++- 2 files changed, 16 insertions(+), 1 deletion(-) rename {tools/testing/selftests => samples}/bpf/bpf_endian.h (73%) diff --git a/tools/testing/selftests/bpf/bpf_endian.h b/samples/bpf/bpf_endian.h similarity index 73% rename from tools/testing/selftests/bpf/bpf_endian.h rename to samples/bpf/bpf_endian.h index 487cbfb..74af266 100644 --- a/tools/testing/selftests/bpf/bpf_endian.h +++ b/samples/bpf/bpf_endian.h @@ -23,11 +23,19 @@ # define __bpf_htons(x) __builtin_bswap16(x) # define __bpf_constant_ntohs(x) ___constant_swab16(x) # define __bpf_constant_htons(x) ___constant_swab16(x) +# define __bpf_ntohl(x)__builtin_bswap32(x) +# define __bpf_htonl(x)__builtin_bswap32(x) +# define __bpf_constant_ntohl(x) ___constant_swab32(x) +# define __bpf_constant_htonl(x) ___constant_swab32(x) #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ # define __bpf_ntohs(x) (x) # define __bpf_htons(x) (x) # define __bpf_constant_ntohs(x) (x) # define __bpf_constant_htons(x) (x) +# define __bpf_ntohl(x)(x) +# define __bpf_htonl(x)(x) +# define __bpf_constant_ntohl(x) (x) +# define __bpf_constant_htonl(x) (x) #else # error "Fix your compiler's __BYTE_ORDER__?!" #endif @@ -38,5 +46,11 @@ #define bpf_ntohs(x) \ (__builtin_constant_p(x) ? \ __bpf_constant_ntohs(x) : __bpf_ntohs(x)) +#define bpf_htonl(x) \ + (__builtin_constant_p(x) ? \ +__bpf_constant_htonl(x) : __bpf_htonl(x)) +#define bpf_ntohl(x) \ + (__builtin_constant_p(x) ? \ +__bpf_constant_ntohl(x) : __bpf_ntohl(x)) #endif /* __BPF_ENDIAN__ */ diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 2ca51a8..f263c6b 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -8,7 +8,8 @@ ifneq ($(wildcard $(GENHDR)),) GENFLAGS := -DHAVE_GENHDR endif -CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include +CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ + -I../../../../samples/bpf LDLIBS += -lcap -lelf TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
Re: [PATCH net] samples/bpf: fix a build issue
Thank you for fixing it. On 7/10/17, 1:12 PM, "Yonghong Song" wrote: From: Yonghong Song With latest net-next: clang -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -Isamples/bpf \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -Wno-compare-distinct-pointer-types \ -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option \ -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found ^~ 1 error generated. net has the same issue. Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h and move it to samples/bpf/ directory so that it can used by both selftests/bpf and samples/bpf. The existing samples/bpf/bpf_helpers.h is already used by both. Signed-off-by: Yonghong Song y...@fb.com Acked-by: Lawrence Brakmo --- {tools/testing/selftests => samples}/bpf/bpf_endian.h | 14 ++ tools/testing/selftests/bpf/Makefile | 3 ++- 2 files changed, 16 insertions(+), 1 deletion(-) rename {tools/testing/selftests => samples}/bpf/bpf_endian.h (73%) diff --git a/tools/testing/selftests/bpf/bpf_endian.h b/samples/bpf/bpf_endian.h similarity index 73% rename from tools/testing/selftests/bpf/bpf_endian.h rename to samples/bpf/bpf_endian.h index 487cbfb..74af266 100644 --- a/tools/testing/selftests/bpf/bpf_endian.h +++ b/samples/bpf/bpf_endian.h @@ -23,11 +23,19 @@ # define __bpf_htons(x)__builtin_bswap16(x) # define __bpf_constant_ntohs(x) ___constant_swab16(x) # define __bpf_constant_htons(x) ___constant_swab16(x) +# define __bpf_ntohl(x)__builtin_bswap32(x) +# define __bpf_htonl(x)__builtin_bswap32(x) +# define __bpf_constant_ntohl(x) ___constant_swab32(x) +# define __bpf_constant_htonl(x) ___constant_swab32(x) #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ # define __bpf_ntohs(x)(x) # define __bpf_htons(x)(x) # define __bpf_constant_ntohs(x) (x) # define __bpf_constant_htons(x) (x) +# define __bpf_ntohl(x)(x) +# define __bpf_htonl(x)(x) +# define __bpf_constant_ntohl(x) (x) +# define __bpf_constant_htonl(x) (x) #else # error "Fix your compiler's __BYTE_ORDER__?!" #endif @@ -38,5 +46,11 @@ #define bpf_ntohs(x) \ (__builtin_constant_p(x) ? \ __bpf_constant_ntohs(x) : __bpf_ntohs(x)) +#define bpf_htonl(x) \ + (__builtin_constant_p(x) ? \ +__bpf_constant_htonl(x) : __bpf_htonl(x)) +#define bpf_ntohl(x) \ + (__builtin_constant_p(x) ? \ +__bpf_constant_ntohl(x) : __bpf_ntohl(x)) #endif /* __BPF_ENDIAN__ */ diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 2ca51a8..f263c6b 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -8,7 +8,8 @@ ifneq ($(wildcard $(GENHDR)),) GENFLAGS := -DHAVE_GENHDR endif -CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include +CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ + -I../../../../samples/bpf LDLIBS += -lcap -lelf TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ -- 2.9.4
[PATCH net] samples/bpf: fix a build issue
From: Yonghong Song With latest net-next: clang -nostdinc -isystem /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include -I./arch/x86/include -I./arch/x86/include/generated/uapi -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./include/uapi -I./include/generated/uapi -include ./include/linux/kconfig.h -Isamples/bpf \ -D__KERNEL__ -D__ASM_SYSREG_H -Wno-unused-value -Wno-pointer-sign \ -Wno-compare-distinct-pointer-types \ -Wno-gnu-variable-sized-type-not-at-end \ -Wno-address-of-packed-member -Wno-tautological-compare \ -Wno-unknown-warning-option \ -O2 -emit-llvm -c samples/bpf/tcp_synrto_kern.c -o -| llc -march=bpf -filetype=obj -o samples/bpf/tcp_synrto_kern.o samples/bpf/tcp_synrto_kern.c:20:10: fatal error: 'bpf_endian.h' file not found ^~ 1 error generated. net has the same issue. Add support for ntohl and htonl in tools/testing/selftests/bpf/bpf_endian.h and move it to samples/bpf/ directory so that it can used by both selftests/bpf and samples/bpf. The existing samples/bpf/bpf_helpers.h is already used by both. Signed-off-by: Yonghong Song --- {tools/testing/selftests => samples}/bpf/bpf_endian.h | 14 ++ tools/testing/selftests/bpf/Makefile | 3 ++- 2 files changed, 16 insertions(+), 1 deletion(-) rename {tools/testing/selftests => samples}/bpf/bpf_endian.h (73%) diff --git a/tools/testing/selftests/bpf/bpf_endian.h b/samples/bpf/bpf_endian.h similarity index 73% rename from tools/testing/selftests/bpf/bpf_endian.h rename to samples/bpf/bpf_endian.h index 487cbfb..74af266 100644 --- a/tools/testing/selftests/bpf/bpf_endian.h +++ b/samples/bpf/bpf_endian.h @@ -23,11 +23,19 @@ # define __bpf_htons(x)__builtin_bswap16(x) # define __bpf_constant_ntohs(x) ___constant_swab16(x) # define __bpf_constant_htons(x) ___constant_swab16(x) +# define __bpf_ntohl(x)__builtin_bswap32(x) +# define __bpf_htonl(x)__builtin_bswap32(x) +# define __bpf_constant_ntohl(x) ___constant_swab32(x) +# define __bpf_constant_htonl(x) ___constant_swab32(x) #elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ # define __bpf_ntohs(x)(x) # define __bpf_htons(x)(x) # define __bpf_constant_ntohs(x) (x) # define __bpf_constant_htons(x) (x) +# define __bpf_ntohl(x)(x) +# define __bpf_htonl(x)(x) +# define __bpf_constant_ntohl(x) (x) +# define __bpf_constant_htonl(x) (x) #else # error "Fix your compiler's __BYTE_ORDER__?!" #endif @@ -38,5 +46,11 @@ #define bpf_ntohs(x) \ (__builtin_constant_p(x) ? \ __bpf_constant_ntohs(x) : __bpf_ntohs(x)) +#define bpf_htonl(x) \ + (__builtin_constant_p(x) ? \ +__bpf_constant_htonl(x) : __bpf_htonl(x)) +#define bpf_ntohl(x) \ + (__builtin_constant_p(x) ? \ +__bpf_constant_ntohl(x) : __bpf_ntohl(x)) #endif /* __BPF_ENDIAN__ */ diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 2ca51a8..f263c6b 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -8,7 +8,8 @@ ifneq ($(wildcard $(GENHDR)),) GENFLAGS := -DHAVE_GENHDR endif -CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include +CFLAGS += -Wall -O2 -I$(APIDIR) -I$(LIBDIR) -I$(GENDIR) $(GENFLAGS) -I../../../include \ + -I../../../../samples/bpf LDLIBS += -lcap -lelf TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \ -- 2.9.4