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author | 2023-08-09 10:34:15 +0200 | |
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committer | 2023-08-21 15:51:25 -0700 | |
commit | 89ae89f53d201143560f1e9ed4bfa62eee34f88e (patch) | |
tree | b680709faee23188f4549c78679a527401dd8d17 /include/uapi/linux/bpf.h | |
parent | bpf: Add attach_type checks under bpf_prog_attach_check_attach_type (diff) | |
download | linux-89ae89f53d201143560f1e9ed4bfa62eee34f88e.tar.gz linux-89ae89f53d201143560f1e9ed4bfa62eee34f88e.tar.bz2 linux-89ae89f53d201143560f1e9ed4bfa62eee34f88e.zip |
bpf: Add multi uprobe link
Adding new multi uprobe link that allows to attach bpf program
to multiple uprobes.
Uprobes to attach are specified via new link_create uprobe_multi
union:
struct {
__aligned_u64 path;
__aligned_u64 offsets;
__aligned_u64 ref_ctr_offsets;
__u32 cnt;
__u32 flags;
} uprobe_multi;
Uprobes are defined for single binary specified in path and multiple
calling sites specified in offsets array with optional reference
counters specified in ref_ctr_offsets array. All specified arrays
have length of 'cnt'.
The 'flags' supports single bit for now that marks the uprobe as
return probe.
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230809083440.3209381-4-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/uapi/linux/bpf.h')
-rw-r--r-- | include/uapi/linux/bpf.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index a4e55e5e84a7..e48780951fc7 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -1039,6 +1039,7 @@ enum bpf_attach_type { BPF_NETFILTER, BPF_TCX_INGRESS, BPF_TCX_EGRESS, + BPF_TRACE_UPROBE_MULTI, __MAX_BPF_ATTACH_TYPE }; @@ -1057,6 +1058,7 @@ enum bpf_link_type { BPF_LINK_TYPE_STRUCT_OPS = 9, BPF_LINK_TYPE_NETFILTER = 10, BPF_LINK_TYPE_TCX = 11, + BPF_LINK_TYPE_UPROBE_MULTI = 12, MAX_BPF_LINK_TYPE, }; @@ -1190,6 +1192,13 @@ enum { BPF_F_KPROBE_MULTI_RETURN = (1U << 0) }; +/* link_create.uprobe_multi.flags used in LINK_CREATE command for + * BPF_TRACE_UPROBE_MULTI attach type to create return probe. + */ +enum { + BPF_F_UPROBE_MULTI_RETURN = (1U << 0) +}; + /* link_create.netfilter.flags used in LINK_CREATE command for * BPF_PROG_TYPE_NETFILTER to enable IP packet defragmentation. */ @@ -1626,6 +1635,13 @@ union bpf_attr { }; __u64 expected_revision; } tcx; + struct { + __aligned_u64 path; + __aligned_u64 offsets; + __aligned_u64 ref_ctr_offsets; + __u32 cnt; + __u32 flags; + } uprobe_multi; }; } link_create; |