A bug appeared in hid_bpf_dispatch.c where it wasn't properly handling unnumbered reports. Add a device variant without report IDs so we can also test them.
Signed-off-by: Benjamin Tissoires <[email protected]> --- tools/testing/selftests/hid/hid_bpf.c | 53 ++++++++++++++++++++++++++------ tools/testing/selftests/hid/hid_common.h | 24 ++++++++++++++- tools/testing/selftests/hid/progs/hid.c | 2 +- 3 files changed, 68 insertions(+), 11 deletions(-) diff --git a/tools/testing/selftests/hid/hid_bpf.c b/tools/testing/selftests/hid/hid_bpf.c index e865ee55b4f1..d1bd07caf991 100644 --- a/tools/testing/selftests/hid/hid_bpf.c +++ b/tools/testing/selftests/hid/hid_bpf.c @@ -54,11 +54,27 @@ FIXTURE_TEARDOWN(hid_bpf) { hid_bpf_teardown(_metadata, self, variant); \ } while (0) +FIXTURE_VARIANT(hid_bpf) { + __u8 *rdesc; + size_t rdesc_size; +}; + +FIXTURE_VARIANT_ADD(hid_bpf, numbered) { + .rdesc = rdesc, + .rdesc_size = sizeof(rdesc), +}; + +FIXTURE_VARIANT_ADD(hid_bpf, unnumbered) { + .rdesc = fido2_rdesc, + .rdesc_size = sizeof(fido2_rdesc), +}; + FIXTURE_SETUP(hid_bpf) { int err; - err = setup_uhid(_metadata, &self->hid, BUS_USB, 0x0001, 0x0a36, rdesc, sizeof(rdesc)); + err = setup_uhid(_metadata, &self->hid, BUS_USB, 0x0001, 0x0a36, + variant->rdesc, variant->rdesc_size); ASSERT_OK(err); } @@ -402,8 +418,11 @@ TEST_F(hid_bpf, test_hid_user_input_report_call) args.hid = self->hid.hid_id; args.data[0] = 1; /* report ID */ - args.data[1] = 2; /* report ID */ - args.data[2] = 42; /* report ID */ + args.data[1] = 2; + args.data[2] = 42; + + if (variant->rdesc == fido2_rdesc) + args.data[0] = 0; prog_fd = bpf_program__fd(self->skel->progs.hid_user_input_report); @@ -421,8 +440,13 @@ TEST_F(hid_bpf, test_hid_user_input_report_call) /* read the data from hidraw */ memset(buf, 0, sizeof(buf)); err = read(self->hidraw_fd, buf, sizeof(buf)); - ASSERT_EQ(err, 6) TH_LOG("read_hidraw"); - ASSERT_EQ(buf[0], 1); + if (variant->rdesc == rdesc) { + ASSERT_EQ(err, 6) TH_LOG("read_hidraw"); + } else { + ASSERT_EQ(err, 64) + TH_LOG("read_hidraw"); + } + ASSERT_EQ(buf[0], args.data[0]); ASSERT_EQ(buf[1], 2); ASSERT_EQ(buf[2], 42); } @@ -448,8 +472,11 @@ TEST_F(hid_bpf, test_hid_user_output_report_call) args.hid = self->hid.hid_id; args.data[0] = 1; /* report ID */ - args.data[1] = 2; /* report ID */ - args.data[2] = 42; /* report ID */ + args.data[1] = 2; + args.data[2] = 42; + + if (variant->rdesc == fido2_rdesc) + args.data[0] = 0; prog_fd = bpf_program__fd(self->skel->progs.hid_user_output_report); @@ -465,9 +492,14 @@ TEST_F(hid_bpf, test_hid_user_output_report_call) ASSERT_OK(err) TH_LOG("error while calling bpf_prog_test_run_opts"); ASSERT_OK(cond_err) TH_LOG("error while calling waiting for the condition"); - ASSERT_EQ(args.retval, 3); + if (variant->rdesc == rdesc) { + ASSERT_EQ(args.retval, 3); + } else if (variant->rdesc == fido2_rdesc) { + ASSERT_EQ(args.retval, 65) + TH_LOG("report size error, should have 64 + 1 extra byte for the report ID 0"); + } - ASSERT_EQ(output_report[0], 1); + ASSERT_EQ(output_report[0], args.data[0]); ASSERT_EQ(output_report[1], 2); ASSERT_EQ(output_report[2], 42); @@ -879,6 +911,9 @@ TEST_F(hid_bpf, test_rdesc_fixup) }; int err, desc_size; + if (variant->rdesc != rdesc) + SKIP(return, "not compatible report descriptor"); + LOAD_PROGRAMS(progs); /* check that hid_rdesc_fixup() was executed */ diff --git a/tools/testing/selftests/hid/hid_common.h b/tools/testing/selftests/hid/hid_common.h index 4567336f131d..b7890ba2878f 100644 --- a/tools/testing/selftests/hid/hid_common.h +++ b/tools/testing/selftests/hid/hid_common.h @@ -13,7 +13,7 @@ #include <linux/uhid.h> #define SHOW_UHID_DEBUG 0 -#define MAX_BUF_SIZE 10 +#define MAX_BUF_SIZE 128 #define min(a, b) \ ({ __typeof__(a) _a = (a); \ @@ -98,6 +98,28 @@ static unsigned char rdesc[] = { static __u8 feature_data[] = { 1, 2 }; +static __maybe_unused unsigned char fido2_rdesc[] = { + 0x06, 0xd0, 0xf1, /* Usage Page (FIDO Alliance) */ + 0x09, 0x01, /* Usage (U2F Authenticator Device) */ + 0xa1, 0x01, /* Collection (Application) */ + 0x09, 0x20, /* Usage (Input Report Data) */ + 0x15, 0x00, /* Logical Minimum (0) */ + 0x26, 0xff, 0x00, /* Logical Maximum (255) */ + 0x75, 0x08, /* Report Size (8) */ + 0x95, 0x40, /* Report Count (64) */ + 0x81, 0x02, /* Input (Data,Var,Abs) */ + 0x09, 0x21, /* Usage (Output Report Data) */ + 0x15, 0x00, /* Logical Minimum (0) */ + 0x26, 0xff, 0x00, /* Logical Maximum (255) */ + 0x75, 0x08, /* Report Size (8) */ + 0x95, 0x40, /* Report Count (64) */ + 0x91, 0x02, /* Output (Data,Var,Abs) */ + 0x06, 0x00, 0xff, /* Usage Page (Vendor Defined Page 1) */ + 0x09, 0x22, /* Usage (Vendor Usage 0x22) */ + 0xb1, 0x02, /* Feature (Data,Var,Abs) */ + 0xc0, /* End Collection */ +}; + #define ASSERT_OK(data) ASSERT_FALSE(data) #define ASSERT_OK_PTR(ptr) ASSERT_NE(NULL, ptr) diff --git a/tools/testing/selftests/hid/progs/hid.c b/tools/testing/selftests/hid/progs/hid.c index b21fbb13c926..605d8a5f9cb2 100644 --- a/tools/testing/selftests/hid/progs/hid.c +++ b/tools/testing/selftests/hid/progs/hid.c @@ -98,7 +98,7 @@ struct hid_bpf_ops change_report_id = { struct hid_hw_request_syscall_args { /* data needs to come at offset 0 so we can use it in calls */ - __u8 data[10]; + __u8 data[128]; unsigned int hid; int retval; size_t size; -- 2.55.0
