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| author | Paul Chaignon <paul.chaignon@gmail.com> | 2023-11-07 20:41:30 +0100 |
|---|---|---|
| committer | Aleksandr Nogikh <nogikh@google.com> | 2023-11-09 18:26:45 +0000 |
| commit | ec3b566eb26bbe8fa4cf8a9f8625712a21286bf7 (patch) | |
| tree | 5a138eb5cf00fcd632f8ebd4460c83531307eafc /sys/linux/bpf.txt | |
| parent | b642300f6a70aa7ee47406afa523da855fee4e59 (diff) | |
sys/linux: describe BPF helper call to bpf_ringbuf_query
This BPF helper has the prototype:
bpf_ringbuf_query(void *ringbuf, u64 flags)
Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>
Diffstat (limited to 'sys/linux/bpf.txt')
| -rw-r--r-- | sys/linux/bpf.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/linux/bpf.txt b/sys/linux/bpf.txt index 1b1b455d3..72e94157e 100644 --- a/sys/linux/bpf.txt +++ b/sys/linux/bpf.txt @@ -424,6 +424,7 @@ bpf_insn [ printk bpf_insn_trace_printk snprintf bpf_insn_snprintf tail_call bpf_insn_tail_call + ringbuf_query bpf_insn_ringbuf_query ] [varlen] bpf_insn_generic { @@ -785,6 +786,15 @@ bpf_insn_ringbuf_free { bpf_helpers_ringbuf_free = BPF_FUNC_ringbuf_submit, BPF_FUNC_ringbuf_discard +# (18) r1 = map[id:16] +# (b7) r2 = 0 +# (85) call bpf_ringbuf_query#322192 +bpf_insn_ringbuf_query { + insn1 bpf_insn_tail_call_map_fd[BPF_REG_1] + insn2 bpf_insn_mov_imm[BPF_REG_2, 0] + insn3 bpf_insn_call_helper_t[const[BPF_FUNC_ringbuf_query, int32]] +} + define MAX_BPF_REG __MAX_BPF_REG bpf_obj_pin_map [ |