diff options
author | David S. Miller <davem@davemloft.net> | 2021-06-17 20:54:56 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2021-06-17 20:54:56 +0200 |
commit | a52171ae7b803f4587b8172d1768313b4d093d0a (patch) | |
tree | b7504137cddb40533c047a6effd024bb0ba2434f /tools/bpf | |
parent | Merge branch 'gianfar-64-bit-stats' (diff) | |
parent | selftests/bpf: Fix selftests build with old system-wide headers (diff) | |
download | linux-a52171ae7b803f4587b8172d1768313b4d093d0a.tar.xz linux-a52171ae7b803f4587b8172d1768313b4d093d0a.zip |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2021-06-17
The following pull-request contains BPF updates for your *net-next* tree.
We've added 50 non-merge commits during the last 25 day(s) which contain
a total of 148 files changed, 4779 insertions(+), 1248 deletions(-).
The main changes are:
1) BPF infrastructure to migrate TCP child sockets from a listener to another
in the same reuseport group/map, from Kuniyuki Iwashima.
2) Add a provably sound, faster and more precise algorithm for tnum_mul() as
noted in https://arxiv.org/abs/2105.05398, from Harishankar Vishwanathan.
3) Streamline error reporting changes in libbpf as planned out in the
'libbpf: the road to v1.0' effort, from Andrii Nakryiko.
4) Add broadcast support to xdp_redirect_map(), from Hangbin Liu.
5) Extends bpf_map_lookup_and_delete_elem() functionality to 4 more map
types, that is, {LRU_,PERCPU_,LRU_PERCPU_,}HASH, from Denis Salopek.
6) Support new LLVM relocations in libbpf to make them more linker friendly,
also add a doc to describe the BPF backend relocations, from Yonghong Song.
7) Silence long standing KUBSAN complaints on register-based shifts in
interpreter, from Daniel Borkmann and Eric Biggers.
8) Add dummy PT_REGS macros in libbpf to fail BPF program compilation when
target arch cannot be determined, from Lorenz Bauer.
9) Extend AF_XDP to support large umems with 1M+ pages, from Magnus Karlsson.
10) Fix two minor libbpf tc BPF API issues, from Kumar Kartikeya Dwivedi.
11) Move libbpf BPF_SEQ_PRINTF/BPF_SNPRINTF macros that can be used by BPF
programs to bpf_helpers.h header, from Florent Revest.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/bpf')
-rw-r--r-- | tools/bpf/bpftool/Makefile | 5 | ||||
-rw-r--r-- | tools/bpf/bpftool/gen.c | 27 | ||||
-rw-r--r-- | tools/bpf/bpftool/main.c | 4 |
3 files changed, 25 insertions, 11 deletions
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile index d16d289ade7a..d73232be1e99 100644 --- a/tools/bpf/bpftool/Makefile +++ b/tools/bpf/bpftool/Makefile @@ -136,7 +136,7 @@ endif BPFTOOL_BOOTSTRAP := $(BOOTSTRAP_OUTPUT)bpftool -BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o xlated_dumper.o btf_dumper.o) $(OUTPUT)disasm.o +BOOTSTRAP_OBJS = $(addprefix $(BOOTSTRAP_OUTPUT),main.o common.o json_writer.o gen.o btf.o xlated_dumper.o btf_dumper.o disasm.o) OBJS = $(patsubst %.c,$(OUTPUT)%.o,$(SRCS)) $(OUTPUT)disasm.o VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ @@ -180,6 +180,9 @@ endif CFLAGS += $(if $(BUILD_BPF_SKELS),,-DBPFTOOL_WITHOUT_SKELETONS) +$(BOOTSTRAP_OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c + $(QUIET_CC)$(HOSTCC) $(CFLAGS) -c -MMD -o $@ $< + $(OUTPUT)disasm.o: $(srctree)/kernel/bpf/disasm.c $(QUIET_CC)$(CC) $(CFLAGS) -c -MMD -o $@ $< diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c index 13b0aa789178..1d71ff8c52fa 100644 --- a/tools/bpf/bpftool/gen.c +++ b/tools/bpf/bpftool/gen.c @@ -713,6 +713,7 @@ static int do_skeleton(int argc, char **argv) #ifndef %2$s \n\ #define %2$s \n\ \n\ + #include <errno.h> \n\ #include <stdlib.h> \n\ #include <bpf/libbpf.h> \n\ \n\ @@ -793,18 +794,23 @@ static int do_skeleton(int argc, char **argv) %1$s__open_opts(const struct bpf_object_open_opts *opts) \n\ { \n\ struct %1$s *obj; \n\ + int err; \n\ \n\ obj = (struct %1$s *)calloc(1, sizeof(*obj)); \n\ - if (!obj) \n\ + if (!obj) { \n\ + errno = ENOMEM; \n\ return NULL; \n\ - if (%1$s__create_skeleton(obj)) \n\ - goto err; \n\ - if (bpf_object__open_skeleton(obj->skeleton, opts)) \n\ - goto err; \n\ + } \n\ + \n\ + err = %1$s__create_skeleton(obj); \n\ + err = err ?: bpf_object__open_skeleton(obj->skeleton, opts);\n\ + if (err) \n\ + goto err_out; \n\ \n\ return obj; \n\ - err: \n\ + err_out: \n\ %1$s__destroy(obj); \n\ + errno = -err; \n\ return NULL; \n\ } \n\ \n\ @@ -824,12 +830,15 @@ static int do_skeleton(int argc, char **argv) %1$s__open_and_load(void) \n\ { \n\ struct %1$s *obj; \n\ + int err; \n\ \n\ obj = %1$s__open(); \n\ if (!obj) \n\ return NULL; \n\ - if (%1$s__load(obj)) { \n\ + err = %1$s__load(obj); \n\ + if (err) { \n\ %1$s__destroy(obj); \n\ + errno = -err; \n\ return NULL; \n\ } \n\ return obj; \n\ @@ -860,7 +869,7 @@ static int do_skeleton(int argc, char **argv) \n\ s = (struct bpf_object_skeleton *)calloc(1, sizeof(*s));\n\ if (!s) \n\ - return -1; \n\ + goto err; \n\ obj->skeleton = s; \n\ \n\ s->sz = sizeof(*s); \n\ @@ -949,7 +958,7 @@ static int do_skeleton(int argc, char **argv) return 0; \n\ err: \n\ bpf_object__destroy_skeleton(s); \n\ - return -1; \n\ + return -ENOMEM; \n\ } \n\ \n\ #endif /* %s */ \n\ diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 7f2817d97079..3ddfd4843738 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -341,8 +341,10 @@ static int do_batch(int argc, char **argv) n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines); if (!n_argc) continue; - if (n_argc < 0) + if (n_argc < 0) { + err = n_argc; goto err_close; + } if (json_output) { jsonw_start_object(json_wtr); |