diff options
Diffstat (limited to 'sys/linux')
| -rw-r--r-- | sys/linux/bpf.txt | 22 | ||||
| -rw-r--r-- | sys/linux/bpf.txt.const | 1 | ||||
| -rw-r--r-- | sys/linux/test/bpf_helpers | 2 |
3 files changed, 25 insertions, 0 deletions
diff --git a/sys/linux/bpf.txt b/sys/linux/bpf.txt index 974106867..eb1c2761b 100644 --- a/sys/linux/bpf.txt +++ b/sys/linux/bpf.txt @@ -387,6 +387,7 @@ bpf_core_relo { bpf_instructions [ raw array[bpf_insn] framed bpf_framed_program + ringbuf bpf_program_ringbuf ] [varlen] bpf_framed_program { @@ -395,6 +396,13 @@ bpf_framed_program { exit bpf_insn_exit } [packed] +bpf_program_ringbuf { + initr0 bpf_insn_init_r0 + reserve bpf_insn_ringbuf_reserve + body array[bpf_insn] + exit bpf_insn_exit +} [packed] + bpf_insn [ generic bpf_insn_generic ldst bpf_insn_ldst @@ -593,6 +601,7 @@ type bpf_insn_map_fd_t[DST, MAP_FD] { type bpf_insn_map_fd bpf_insn_map_fd_t[flags[bpf_reg, int8:4], fd_bpf_map] type bpf_insn_tail_call_map_fd[DST] bpf_insn_map_fd_t[const[DST, int8:4], tail_call_map] +type bpf_insn_ringbuf_fd[DST] bpf_insn_map_fd_t[const[DST, int8:4], ringbuf_map_fd] bpf_insn_map_idx { code const[bpf_insn_load_imm_dw, int8] @@ -727,6 +736,19 @@ bpf_insn_tail_call { insn4 bpf_insn_mov_imm[BPF_REG_0, 0] } +# (18) r1 = map[id:16] +# (b7) r2 = 8 +# (b7) r3 = 0 +# (85) call bpf_ringbuf_reserve#320112 +# (bf) r9 = r0 +bpf_insn_ringbuf_reserve { + insn1 bpf_insn_ringbuf_fd[BPF_REG_1] + insn2 bpf_insn_mov_imm[BPF_REG_2, 20] + insn3 bpf_insn_mov_imm[BPF_REG_3, 0] + insn4 bpf_insn_call_helper_t[const[BPF_FUNC_ringbuf_reserve, int32]] + insn5 bpf_insn_mov_reg[BPF_REG_0, BPF_REG_9] +} + define MAX_BPF_REG __MAX_BPF_REG bpf_obj_pin_map [ diff --git a/sys/linux/bpf.txt.const b/sys/linux/bpf.txt.const index 4e55324c0..8091b3944 100644 --- a/sys/linux/bpf.txt.const +++ b/sys/linux/bpf.txt.const @@ -66,6 +66,7 @@ BPF_EXIST = 2 BPF_EXIT0 = 9 BPF_FLOW_DISSECTOR = 17 BPF_FUNC_INFO_SIZE = 8 +BPF_FUNC_ringbuf_reserve = 131 BPF_FUNC_snprintf = 165 BPF_FUNC_tail_call = 12 BPF_FUNC_trace_printk = 6 diff --git a/sys/linux/test/bpf_helpers b/sys/linux/test/bpf_helpers index 246e903b0..0bc1ce513 100644 --- a/sys/linux/test/bpf_helpers +++ b/sys/linux/test/bpf_helpers @@ -24,3 +24,5 @@ r4 = bpf$PROG_LOAD(AUTO, &AUTO={0x3, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUT # Prepare, load, and execute a BPF program that calls ringbuf helpers r1 = bpf$MAP_CREATE_RINGBUF(AUTO, &AUTO={AUTO, AUTO, AUTO, 0x40000, AUTO, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x0, 0x0, 0x0, 0x0, AUTO}, 0x48) + +r2 = bpf$PROG_LOAD(AUTO, &AUTO={0x3, AUTO, &AUTO=@ringbuf={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, {{AUTO, AUTO, AUTO, AUTO, r1, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO}, {AUTO, AUTO, AUTO, AUTO, AUTO, AUTO, AUTO}}, [], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0xa0) # EINVAL |