Add vhci support to trigger the hci devcoredump by writing to
force_devcoredump debugfs entry and read the generated devcoredump
file.
---
Changes in v4:
- Split into two patches - vhci patch and mgmt-tester patch
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 ++
2 files changed, 44 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);
--
2.40.0.348.gf938b09366-goog
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.
---
Changes in v4:
- New patch in the series
tools/mgmt-tester.c | 78 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+)
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
This is automated email and please do not reply to this email!
Dear submitter,
Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=733659
---Test result---
Test Summary:
CheckPatch PASS 0.97 seconds
GitLint PASS 0.60 seconds
BuildEll PASS 27.75 seconds
BluezMake PASS 910.23 seconds
MakeCheck PASS 11.99 seconds
MakeDistcheck PASS 154.37 seconds
CheckValgrind PASS 251.74 seconds
CheckSmatch PASS 337.29 seconds
bluezmakeextell PASS 101.48 seconds
IncrementalBuild PASS 1504.22 seconds
ScanBuild PASS 1060.11 seconds
---
Regards,
Linux Bluetooth