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Thu, 02 Mar 2023 15:17:00 -0800 (PST) Date: Thu, 2 Mar 2023 15:16:54 -0800 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.0.rc0.216.gc4246ad0f0-goog Message-ID: <20230302151621.BlueZ.v1.1.I21ac5a143b0e42eef4ff71ef04ef0e53a294932a@changeid> Subject: [BlueZ PATCH v1] mgmt-tester: Add devcoredump test From: Manish Mandlik To: marcel@holtmann.org, luiz.dentz@gmail.com Cc: chromeos-bluetooth-upstreaming@chromium.org, linux-bluetooth@vger.kernel.org, Manish Mandlik Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Add mgmt-tester test for hci devcoredump. --- emulator/vhci.c | 42 ++++++++++++++++++++++++ emulator/vhci.h | 2 ++ tools/mgmt-tester.c | 78 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 122 insertions(+) diff --git a/emulator/vhci.c b/emulator/vhci.c index a12b11e0f..048ea08c6 100644 --- a/emulator/vhci.c +++ b/emulator/vhci.c @@ -22,6 +22,7 @@ #include #include #include +#include #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_devcoredump(struct vhci *vhci, void *data, size_t len) +{ + return vhci_debugfs_write(vhci, "force_devcoredump", data, len); +} + +int vhci_read_devcoredump(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..cb969911c 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_devcoredump(struct vhci *vhci, void *data, size_t len); +int vhci_read_devcoredump(struct vhci *vhci, void *buf, size_t size); diff --git a/tools/mgmt-tester.c b/tools/mgmt-tester.c index a56c38173..70b425547 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_devcoredump(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; + 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_devcoredump(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_devcoredump(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_devcoredump); + return tester_run(); }