Hi Manish,
On Fri, Mar 24, 2023 at 10:22 AM Manish Mandlik <mmandlik@xxxxxxxxxx> wrote:
>
> Add mgmt-tester test for hci devcoredump. This test triggers the
> devcoredump with a test data and verifies the generated devcoredump
> file for the test data and correct devcoredump header fields.
>
> Signed-off-by: Manish Mandlik <mmandlik@xxxxxxxxxx>
> ---
>
> Changes in v3:
> - Fix compiler warning for signed comparision in test_hci_devcd()
>
> Changes in v2:
> - Rename function names to *_devcd
>
> emulator/vhci.c | 42 ++++++++++++++++++++++++
> emulator/vhci.h | 2 ++
> tools/mgmt-tester.c | 78 +++++++++++++++++++++++++++++++++++++++++++++
Looks like you forgot to split the vhci changes.
> 3 files changed, 122 insertions(+)
>
> diff --git a/emulator/vhci.c b/emulator/vhci.c
> index a12b11e0f..1676f1697 100644
> --- a/emulator/vhci.c
> +++ b/emulator/vhci.c
> @@ -22,6 +22,7 @@
> #include <sys/uio.h>
> #include <fcntl.h>
> #include <unistd.h>
> +#include <dirent.h>
>
> #include "lib/bluetooth.h"
> #include "lib/hci.h"
> @@ -32,6 +33,7 @@
> #include "vhci.h"
>
> #define DEBUGFS_PATH "/sys/kernel/debug/bluetooth"
> +#define DEVCORE_PATH "/sys/class/devcoredump"
>
> struct vhci {
> enum btdev_type type;
> @@ -267,3 +269,43 @@ int vhci_set_force_static_address(struct vhci *vhci, bool enable)
> return vhci_debugfs_write(vhci, "force_static_address", &val,
> sizeof(val));
> }
> +
> +int vhci_force_devcd(struct vhci *vhci, void *data, size_t len)
> +{
> + return vhci_debugfs_write(vhci, "force_devcoredump", data, len);
> +}
> +
> +int vhci_read_devcd(struct vhci *vhci, void *buf, size_t size)
> +{
> + DIR *dir;
> + struct dirent *entry;
> + char filename[PATH_MAX];
> + int fd;
> + int count;
> +
> + dir = opendir(DEVCORE_PATH);
> + if (dir == NULL)
> + return -errno;
> +
> + while ((entry = readdir(dir)) != NULL) {
> + if (strstr(entry->d_name, "devcd"))
> + break;
> + }
> +
> + if (entry == NULL) {
> + closedir(dir);
> + return -ENOENT;
> + }
> +
> + sprintf(filename, DEVCORE_PATH "/%s/data", entry->d_name);
> + fd = open(filename, O_RDONLY);
> + if (fd < 0) {
> + closedir(dir);
> + return -errno;
> + }
> +
> + count = read(fd, buf, size);
> + close(fd);
> +
> + return count;
> +}
> diff --git a/emulator/vhci.h b/emulator/vhci.h
> index 6da56cb58..5dd28b627 100644
> --- a/emulator/vhci.h
> +++ b/emulator/vhci.h
> @@ -29,3 +29,5 @@ int vhci_set_msft_opcode(struct vhci *vhci, uint16_t opcode);
> int vhci_set_aosp_capable(struct vhci *vhci, bool enable);
> int vhci_set_emu_opcode(struct vhci *vhci, uint16_t opcode);
> int vhci_set_force_static_address(struct vhci *vhci, bool enable);
> +int vhci_force_devcd(struct vhci *vhci, void *data, size_t len);
> +int vhci_read_devcd(struct vhci *vhci, void *buf, size_t size);
> diff --git a/tools/mgmt-tester.c b/tools/mgmt-tester.c
> index a56c38173..838ae5d2b 100644
> --- a/tools/mgmt-tester.c
> +++ b/tools/mgmt-tester.c
> @@ -12511,6 +12511,77 @@ static void test_suspend_resume_success_10(const void *test_data)
> tester_wait(2, trigger_force_resume, NULL);
> }
>
> +#define MAX_COREDUMP_BUF_LEN 512
> +#define MAX_COREDUMP_LINE_LEN 40
> +
> +static void test_hci_devcd(const void *test_data)
> +{
> + struct test_data *data = tester_get_data();
> + struct vhci *vhci = hciemu_get_vhci(data->hciemu);
> + char buf[MAX_COREDUMP_BUF_LEN] = {0};
> + char delim[] = "\n";
> + char *line;
> + char *saveptr;
> + unsigned int i = 0;
> +
> + char dump_data[] = "test data";
> + char expected[][MAX_COREDUMP_LINE_LEN] = {
> + "Bluetooth devcoredump",
> + "State: 2",
> + "Controller Name: vhci_ctrl",
> + "Firmware Version: vhci_fw",
> + "Driver: vhci_drv",
> + "Vendor: vhci",
> + "--- Start dump ---",
> + };
> +
> + /* Triggers the devcoredump */
> + if (vhci_force_devcd(vhci, dump_data, sizeof(dump_data))) {
> + tester_warn("Unable to set force_devcoredump");
> + tester_test_failed();
> + return;
> + }
> +
> + /* Read the generated devcoredump file */
> + if (vhci_read_devcd(vhci, buf, sizeof(buf)) <= 0) {
> + tester_warn("Unable to read devcoredump");
> + tester_test_failed();
> + return;
> + }
> +
> + /* Verify if all devcoredump header fields are present */
> + line = strtok_r(buf, delim, &saveptr);
> + while (i < ARRAY_SIZE(expected)) {
> + if (!line || strcmp(line, expected[i])) {
> + tester_warn("Incorrect coredump data: %s (expected %s)",
> + line, expected[i]);
> + tester_test_failed();
> + return;
> + }
> +
> + if (!strcmp(line, "State: 2")) {
> + /* After updating the devcoredump state, the HCI
> + * devcoredump API adds a `\0` at the end. Skip it
> + * before reading the next line.
> + */
> + saveptr++;
> + }
> +
> + line = strtok_r(NULL, delim, &saveptr);
> + i++;
> + }
> +
> + /* Verify the devcoredump data */
> + if (!line || strcmp(line, dump_data)) {
> + tester_warn("Incorrect coredump data: %s (expected %s)", line,
> + dump_data);
> + tester_test_failed();
> + return;
> + }
> +
> + tester_test_passed();
> +}
> +
> int main(int argc, char *argv[])
> {
> tester_init(&argc, &argv);
> @@ -14651,5 +14722,12 @@ int main(int argc, char *argv[])
> setup_ll_privacy_add_device,
> test_command_generic);
>
> + /* HCI devcoredump
> + * Setup : Power on
> + * Run: Trigger devcoredump via force_devcoredump
> + * Expect: Devcoredump is generated with correct data
> + */
> + test_bredrle("HCI devcoredump", NULL, NULL, test_hci_devcd);
> +
> return tester_run();
> }
> --
> 2.40.0.348.gf938b09366-goog
>
--
Luiz Augusto von Dentz
