BMC/Intel-BMC/linux.git/tools/lib/bpf/bpf.c, branch dev-4.19

bpf: libbpf: retry map creation without the name

2019-02-12T18:47:00+00:00

[ Upstream commit 23499442c319412aa8e54e7a939e2eb531bdd77d ] Since commit 88cda1c9da02 ("bpf: libbpf: Provide basic API support to specify BPF obj name"), libbpf unconditionally sets bpf_attr->name for maps. Pre v4.14 kernels don't know about map names and return an error about unexpected non-zero data. Retry sys_bpf without a map name to cover older kernels. v2 changes: * check for errno == EINVAL as suggested by Daniel Borkmann Signed-off-by: Stanislav Fomichev Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin

bpf: Test BPF_PROG_TYPE_SK_REUSEPORT

2018-08-10T23:58:46+00:00

This patch add tests for the new BPF_PROG_TYPE_SK_REUSEPORT. The tests cover: - IPv4/IPv6 + TCP/UDP - TCP syncookie - TCP fastopen - Cases when the bpf_sk_select_reuseport() returning errors - Cases when the bpf prog returns SK_DROP - Values from sk_reuseport_md - outer_map => reuseport_array The test depends on commit 3eee1f75f2b9 ("bpf: fix bpf_skb_load_bytes_relative pkt length check") Signed-off-by: Martin KaFai Lau Acked-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

tools/bpf: sync kernel header bpf.h and add bpf_task_fd_query in libbpf

2018-05-25T01:18:19+00:00

Sync kernel header bpf.h to tools/include/uapi/linux/bpf.h and implement bpf_task_fd_query() in libbpf. The test programs in samples/bpf and tools/testing/selftests/bpf, and later bpftool will use this libbpf function to query kernel. Acked-by: Martin KaFai Lau Signed-off-by: Yonghong Song Signed-off-by: Alexei Starovoitov

bpf: btf: Add tests for the btf uapi changes

2018-05-23T10:03:32+00:00

This patch does the followings: 1. Modify libbpf and test_btf to reflect the uapi changes in btf 2. Add test for the btf_header changes 3. Add tests for array->index_type 4. Add err_str check to the tests 5. Fix a 4 bytes hole in "struct test #1" by swapping "m" and "n" Signed-off-by: Martin KaFai Lau Signed-off-by: Daniel Borkmann

libbpf: add ifindex to enable offload support

2018-05-16T22:54:26+00:00

BPF programs currently can only be offloaded using iproute2. This patch will allow programs to be offloaded using libbpf calls. Signed-off-by: David Beckett Reviewed-by: Jakub Kicinski Signed-off-by: Daniel Borkmann

bpf: btf: Tests for BPF_OBJ_GET_INFO_BY_FD and BPF_BTF_GET_FD_BY_ID

2018-05-09T15:25:14+00:00

This patch adds test for BPF_BTF_GET_FD_BY_ID and the new btf_id/btf_key_id/btf_value_id in the "struct bpf_map_info". It also modifies the existing BPF_OBJ_GET_INFO_BY_FD test to reflect the new "struct bpf_btf_info". Signed-off-by: Martin KaFai Lau Acked-by: Alexei Starovoitov Acked-by: Song Liu Signed-off-by: Daniel Borkmann

bpf: btf: Add BTF support to libbpf

2018-04-19T19:46:25+00:00

If the ".BTF" elf section exists, libbpf will try to create a btf_fd (through BPF_BTF_LOAD). If that fails, it will still continue loading the bpf prog/map without the BTF. If the bpf_object has a BTF loaded, it will create a map with the btf_fd. libbpf will try to figure out the btf_key_id and btf_value_id of a map by finding the BTF type with name "_key" and "_value". If they cannot be found, it will continue without using the BTF. Signed-off-by: Martin KaFai Lau Acked-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

libbpf: Support expected_attach_type at prog load

2018-03-31T00:15:05+00:00

Support setting `expected_attach_type` at prog load time in both `bpf/bpf.h` and `bpf/libbpf.h`. Since both headers already have API to load programs, new functions are added not to break backward compatibility for existing ones: * `bpf_load_program_xattr()` is added to `bpf/bpf.h`; * `bpf_prog_load_xattr()` is added to `bpf/libbpf.h`. Both new functions accept structures, `struct bpf_load_program_attr` and `struct bpf_prog_load_attr` correspondingly, where new fields can be added in the future w/o changing the API. Standard `_xattr` suffix is used to name the new API functions. Since `bpf_load_program_name()` is not used as heavily as `bpf_load_program()`, it was removed in favor of more generic `bpf_load_program_xattr()`. Signed-off-by: Andrey Ignatov Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

libbpf: add bpf_raw_tracepoint_open helper

2018-03-28T20:55:19+00:00

add bpf_raw_tracepoint_open(const char *name, int prog_fd) api to libbpf Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

libbpf: add missing SPDX-License-Identifier

2018-02-03T01:53:48+00:00

Signed-off-by: Eric Leblond Acked-by: Alexei Starovoitov Signed-off-by: Alexei Starovoitov