diff options
| author | Paul Chaignon <paul@isovalent.com> | 2021-12-19 20:34:43 +0100 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2021-12-21 05:33:37 +0100 |
| commit | b747e572ec589543e9ccb870158f467f7fa3d825 (patch) | |
| tree | cc4eeb105cd902cb111bacd0d2f636d1d0292c35 /sys/linux/test/btf_id | |
| parent | 5e875b312eef29ed23019a5819cec96ef3afdee0 (diff) | |
sys/linux: support map fd arrays
Commit [1] upstream introduced a new way to reference BPF maps in eBPF
instructions. An array of BPF map fds is passed at program load time.
Instructions can then reference fds in this array instead of carrying
the fds directly. The goal is to allow BPF instructions to be immutable
after compilation.
Since we don't yet have a good way to reference indexes in an array, we
define a new type map_fd_id for that purpose, with indexes between 0 and
16 only.
1 - https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=387544bfa291
Signed-off-by: Paul Chaignon <paul@isovalent.com>
Diffstat (limited to 'sys/linux/test/btf_id')
| -rw-r--r-- | sys/linux/test/btf_id | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/linux/test/btf_id b/sys/linux/test/btf_id index 0e004659e..dde131829 100644 --- a/sys/linux/test/btf_id +++ b/sys/linux/test/btf_id @@ -4,7 +4,7 @@ r0 = syz_btf_id_by_name$bpf_lsm(&AUTO='bpf_lsm_path_mkdir\x00') # Load the bpf program. -r1 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &AUTO=@bpf_lsm={0x1d, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, [], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x1b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, r0, 0x0}, 0x78) +r1 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &AUTO=@bpf_lsm={0x1d, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, [], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x1b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, r0, 0x0, 0x0, 0x0}, 0x90) # Attach the bpf program to the lsm hook. @@ -14,6 +14,6 @@ r2 = bpf$BPF_RAW_TRACEPOINT_OPEN_UNNAMED(0x11, &AUTO={AUTO, r1}, 0x10) r3 = syz_btf_id_by_name$bpf_lsm(&AUTO='bpf_lsm_path_mkdir\x00') -r4 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &AUTO=@bpf_lsm={0x1d, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, [], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x1b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, r3, 0x0}, 0x78) +r4 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &AUTO=@bpf_lsm={0x1d, AUTO, &AUTO=@framed={{AUTO, AUTO, AUTO, AUTO, 0x0, AUTO, AUTO, AUTO, 0x0}, [], {AUTO, AUTO, AUTO, AUTO}}, &AUTO='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, "00000000000000000000000000000000", 0x0, 0x1b, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, r3, 0x0, 0x0, 0x0}, 0x90) r5 = bpf$BPF_RAW_TRACEPOINT_OPEN_UNNAMED(0x11, &AUTO={AUTO, r4}, 0x10) |