From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
To: Greg KH <gregkh@linuxfoundation.org>,
Jiri Kosina <jikos@kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>,
Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>, Shuah Khan <shuah@kernel.org>,
Dave Marchevsky <davemarchevsky@fb.com>,
Joe Stringer <joe@cilium.io>
Cc: Tero Kristo <tero.kristo@linux.intel.com>,
linux-kernel@vger.kernel.org, linux-input@vger.kernel.org,
netdev@vger.kernel.org, bpf@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Benjamin Tissoires <benjamin.tissoires@redhat.com>
Subject: [PATCH bpf-next v2 04/28] libbpf: add HID program type and API
Date: Fri, 4 Mar 2022 18:28:28 +0100 [thread overview]
Message-ID: <20220304172852.274126-5-benjamin.tissoires@redhat.com> (raw)
In-Reply-To: <20220304172852.274126-1-benjamin.tissoires@redhat.com>
HID-bpf program type are needing a new SEC.
To bind a hid-bpf program, we can rely on bpf_program__attach_fd()
so export a new function to the API.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
---
changes in v2:
- split the series by bpf/libbpf/hid/selftests and samples
---
tools/lib/bpf/libbpf.c | 7 +++++++
tools/lib/bpf/libbpf.h | 2 ++
tools/lib/bpf/libbpf.map | 1 +
3 files changed, 10 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 81bf01d67671..356bbd3ad2c7 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8680,6 +8680,7 @@ static const struct bpf_sec_def section_defs[] = {
SEC_DEF("cgroup/setsockopt", CGROUP_SOCKOPT, BPF_CGROUP_SETSOCKOPT, SEC_ATTACHABLE | SEC_SLOPPY_PFX),
SEC_DEF("struct_ops+", STRUCT_OPS, 0, SEC_NONE),
SEC_DEF("sk_lookup", SK_LOOKUP, BPF_SK_LOOKUP, SEC_ATTACHABLE | SEC_SLOPPY_PFX),
+ SEC_DEF("hid/device_event", HID, BPF_HID_DEVICE_EVENT, SEC_ATTACHABLE_OPT | SEC_SLOPPY_PFX),
};
#define MAX_TYPE_NAME_SIZE 32
@@ -10659,6 +10660,12 @@ static struct bpf_link *attach_iter(const struct bpf_program *prog, long cookie)
return bpf_program__attach_iter(prog, NULL);
}
+struct bpf_link *
+bpf_program__attach_hid(const struct bpf_program *prog, int hid_fd)
+{
+ return bpf_program__attach_fd(prog, hid_fd, 0, "hid");
+}
+
struct bpf_link *bpf_program__attach(const struct bpf_program *prog)
{
if (!prog->sec_def || !prog->sec_def->attach_fn)
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index c8d8daad212e..f677ac0a9ede 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -529,6 +529,8 @@ struct bpf_iter_attach_opts {
LIBBPF_API struct bpf_link *
bpf_program__attach_iter(const struct bpf_program *prog,
const struct bpf_iter_attach_opts *opts);
+LIBBPF_API struct bpf_link *
+bpf_program__attach_hid(const struct bpf_program *prog, int hid_fd);
/*
* Libbpf allows callers to adjust BPF programs before being loaded
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index 47e70c9058d9..fdc6fa743953 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -424,6 +424,7 @@ LIBBPF_0.6.0 {
LIBBPF_0.7.0 {
global:
bpf_btf_load;
+ bpf_program__attach_hid;
bpf_program__expected_attach_type;
bpf_program__log_buf;
bpf_program__log_level;
--
2.35.1
next prev parent reply other threads:[~2022-03-04 17:31 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 17:28 [PATCH bpf-next v2 00/28] Introduce eBPF support for HID devices Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 01/28] bpf: add new is_sys_admin_prog_type() helper Benjamin Tissoires
2022-03-04 23:12 ` Song Liu
2022-03-05 10:07 ` Benjamin Tissoires
2022-03-05 16:58 ` Sean Young
2022-03-07 18:26 ` Song Liu
2022-03-07 18:23 ` Song Liu
2022-03-09 8:27 ` Sean Young
2022-03-04 17:28 ` [PATCH bpf-next v2 02/28] bpf: introduce hid program type Benjamin Tissoires
2022-03-04 18:21 ` Greg KH
2022-03-07 17:57 ` Benjamin Tissoires
2022-03-05 0:02 ` Song Liu
2022-03-07 18:39 ` Benjamin Tissoires
2022-03-08 0:56 ` Song Liu
2022-03-08 9:20 ` Benjamin Tissoires
2022-03-11 17:16 ` Benjamin Tissoires
2022-03-05 0:20 ` Song Liu
2022-03-04 17:28 ` [PATCH bpf-next v2 03/28] HID: hook up with bpf Benjamin Tissoires
2022-03-04 18:24 ` Greg KH
2022-03-05 0:23 ` Song Liu
2022-03-15 16:29 ` Tero Kristo
2022-03-04 17:28 ` Benjamin Tissoires [this message]
2022-03-05 0:31 ` [PATCH bpf-next v2 04/28] libbpf: add HID program type and API Song Liu
2022-03-08 1:30 ` Andrii Nakryiko
2022-03-08 1:38 ` Song Liu
2022-03-08 5:52 ` Andrii Nakryiko
2022-03-04 17:28 ` [PATCH bpf-next v2 05/28] selftests/bpf: add tests for the HID-bpf initial implementation Benjamin Tissoires
2022-03-05 0:41 ` Song Liu
2022-03-05 10:10 ` Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 06/28] samples/bpf: add new hid_mouse example Benjamin Tissoires
2022-03-04 18:26 ` Greg KH
2022-03-04 17:28 ` [PATCH bpf-next v2 07/28] bpf/hid: add a new attach type to change the report descriptor Benjamin Tissoires
2022-03-04 18:32 ` Greg KH
2022-03-04 17:28 ` [PATCH bpf-next v2 08/28] HID: allow to change the report descriptor from an eBPF program Benjamin Tissoires
2022-03-04 18:32 ` Greg KH
2022-03-04 17:28 ` [PATCH bpf-next v2 09/28] libbpf: add new attach type BPF_HID_RDESC_FIXUP Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 10/28] selftests/bpf: add report descriptor fixup tests Benjamin Tissoires
2022-03-04 18:34 ` Greg KH
2022-03-04 17:28 ` [PATCH bpf-next v2 11/28] samples/bpf: add a report descriptor fixup Benjamin Tissoires
2022-03-04 18:36 ` Greg KH
2022-03-04 17:28 ` [PATCH bpf-next v2 12/28] bpf/hid: add hid_{get|set}_data helpers Benjamin Tissoires
2022-03-04 18:37 ` Greg KH
2022-03-04 18:41 ` Greg KH
2022-03-05 10:33 ` Benjamin Tissoires
2022-03-05 10:47 ` Greg KH
2022-03-11 0:40 ` Song Liu
2022-03-11 15:08 ` Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 13/28] HID: bpf: implement hid_bpf_get|set_data Benjamin Tissoires
2022-03-04 18:39 ` Greg KH
2022-03-04 17:28 ` [PATCH bpf-next v2 14/28] selftests/bpf: add tests for hid_{get|set}_data helpers Benjamin Tissoires
2022-03-15 16:49 ` Tero Kristo
2022-03-15 17:02 ` Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 15/28] bpf/hid: add new BPF type to trigger commands from userspace Benjamin Tissoires
2022-03-11 0:46 ` Song Liu
2022-03-04 17:28 ` [PATCH bpf-next v2 16/28] libbpf: add new attach type BPF_HID_USER_EVENT Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 17/28] selftests/bpf: add test for user call of HID bpf programs Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 18/28] selftests/bpf: hid: rely on uhid event to know if a test device is ready Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 19/28] bpf/hid: add bpf_hid_raw_request helper function Benjamin Tissoires
2022-03-11 0:50 ` Song Liu
2022-03-04 17:28 ` [PATCH bpf-next v2 20/28] HID: add implementation of bpf_hid_raw_request Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 21/28] selftests/bpf: add tests for bpf_hid_hw_request Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 22/28] bpf/verifier: prevent non GPL programs to be loaded against HID Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 23/28] HID: bpf: compute only the required buffer size for the device Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 24/28] HID: bpf: only call hid_bpf_raw_event() if a ctx is available Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 25/28] bpf/hid: Add a flag to add the program at the beginning of the list Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 26/28] libbpf: add handling for BPF_F_INSERT_HEAD in HID programs Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 27/28] selftests/bpf: Add a test for BPF_F_INSERT_HEAD Benjamin Tissoires
2022-03-04 17:28 ` [PATCH bpf-next v2 28/28] samples/bpf: fix bpf_program__attach_hid() api change Benjamin Tissoires
2022-03-05 1:13 ` [PATCH bpf-next v2 00/28] Introduce eBPF support for HID devices Song Liu
2022-03-05 10:23 ` Benjamin Tissoires
2022-03-07 18:11 ` Song Liu
2022-03-08 13:37 ` Benjamin Tissoires
2022-03-15 17:04 ` Tero Kristo
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