From 4352b8aee98005853aa63f57d6377282de17a33f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 23 Aug 2026 13:28:57 -0700 Subject: Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux Pull I3C updates from Alexandre Belloni: "A new driver this cycle, for the AMD AXI I3C controller. There are also new features such as IBI wakeup support, SETAASA device discovery and ACPI support for the the DAA methods, meaning we can now communicate with the SPD devices on DDR5 modules. New driver: - AMD AXI I3C master controller Subsystem: - I3C Common Command Code (CCC) handling improvements, especially around GET CCCs - SETAASA device discovery support - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as well as I2C devices on I3C bus - IBI-based wakeup support Drivers: - dw: SETAASA support - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C controller support, PIO queue management support for HCI v1.2 - renesas: improve suspend to RAM support, add runtime PM support" * tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits) i3c: dw: reduce do_daa time if there's no client i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2 i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode i3c: dw: rename "pclk" to "apb" to match dt-binding i3c: dw: make struct dw_i3c_cmd smaller i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding i3c: renesas: Don't register devices when ENTDAA times out i3c: master: dw-i3c-master: fix OD timing for first broadcast i3c: mipi-i3c-hci: Advertise IBI wakeup capability i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev() i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI i3c: master: Reject IBI requests from non-IBI-capable devices i3c: master: Add helper to query bus wakeup requirements i3c: master: Report wakeup events for IBIs i3c: master: Support IBI-based wakeup capability i3c: master: Fix potential UAF in i3c_device_match() i3c: master: Fix potential UAF in i3c_device_uevent() i3c: Make dev->desc locking assumptions explicit i3c: master: Fix use-after-free of master->this ... --- tools/testing/selftests/ipc/.gitignore | 3 + tools/testing/selftests/ipc/Makefile | 18 +++ tools/testing/selftests/ipc/config | 2 + tools/testing/selftests/ipc/msgque.c | 256 +++++++++++++++++++++++++++++++++ 4 files changed, 279 insertions(+) create mode 100644 tools/testing/selftests/ipc/.gitignore create mode 100644 tools/testing/selftests/ipc/Makefile create mode 100644 tools/testing/selftests/ipc/config create mode 100644 tools/testing/selftests/ipc/msgque.c (limited to 'tools/testing/selftests/ipc') diff --git a/tools/testing/selftests/ipc/.gitignore b/tools/testing/selftests/ipc/.gitignore new file mode 100644 index 000000000..9ed280e4c --- /dev/null +++ b/tools/testing/selftests/ipc/.gitignore @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0-only +msgque_test +msgque diff --git a/tools/testing/selftests/ipc/Makefile b/tools/testing/selftests/ipc/Makefile new file mode 100644 index 000000000..fad10f2bb --- /dev/null +++ b/tools/testing/selftests/ipc/Makefile @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0 +ARCH ?= $(shell uname -m 2>/dev/null || echo not) +override ARCH := $(shell echo $(ARCH) | sed -e s/i.86/i386/) +ifeq ($(ARCH),i386) + override ARCH := x86 + CFLAGS := -DCONFIG_X86_32 -D__i386__ +endif +ifeq ($(ARCH),x86_64) + override ARCH := x86 + CFLAGS := -DCONFIG_X86_64 -D__x86_64__ +endif + +CFLAGS += $(KHDR_INCLUDES) + +TEST_GEN_PROGS := msgque + +include ../lib.mk + diff --git a/tools/testing/selftests/ipc/config b/tools/testing/selftests/ipc/config new file mode 100644 index 000000000..070244710 --- /dev/null +++ b/tools/testing/selftests/ipc/config @@ -0,0 +1,2 @@ +CONFIG_EXPERT=y +CONFIG_CHECKPOINT_RESTORE=y diff --git a/tools/testing/selftests/ipc/msgque.c b/tools/testing/selftests/ipc/msgque.c new file mode 100644 index 000000000..4b4c1abfa --- /dev/null +++ b/tools/testing/selftests/ipc/msgque.c @@ -0,0 +1,256 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include + +#include "kselftest.h" + +#define MAX_MSG_SIZE 32 + +struct msg1 { + int msize; + long mtype; + char mtext[MAX_MSG_SIZE]; +}; + +#define TEST_STRING "Test sysv5 msg" +#define MSG_TYPE 1 + +#define ANOTHER_TEST_STRING "Yet another test sysv5 msg" +#define ANOTHER_MSG_TYPE 26538 + +struct msgque_data { + key_t key; + int msq_id; + int qbytes; + int qnum; + int mode; + struct msg1 *messages; +}; + +int restore_queue(struct msgque_data *msgque) +{ + int fd, ret, id, i; + char buf[32]; + + fd = open("/proc/sys/kernel/msg_next_id", O_WRONLY); + if (fd == -1) { + ksft_test_result_fail("Failed to open /proc/sys/kernel/msg_next_id\n"); + return -errno; + } + sprintf(buf, "%d", msgque->msq_id); + + ret = write(fd, buf, strlen(buf)); + if (ret != strlen(buf)) { + ksft_test_result_fail("Failed to write to /proc/sys/kernel/msg_next_id\n"); + return -errno; + } + + id = msgget(msgque->key, msgque->mode | IPC_CREAT | IPC_EXCL); + if (id == -1) { + ksft_test_result_fail("Failed to create queue\n"); + return -errno; + } + + if (id != msgque->msq_id) { + ksft_test_result_fail("Restored queue has wrong id (%d instead of %d)\n" + , id, msgque->msq_id); + ret = -EFAULT; + goto destroy; + } + + for (i = 0; i < msgque->qnum; i++) { + if (msgsnd(msgque->msq_id, &msgque->messages[i].mtype, + msgque->messages[i].msize, IPC_NOWAIT) != 0) { + ksft_test_result_fail("msgsnd failed (%m)\n"); + ret = -errno; + goto destroy; + } + } + return 0; + +destroy: + if (msgctl(id, IPC_RMID, NULL)) + printf("Failed to destroy queue: %d\n", -errno); + return ret; +} + +int check_and_destroy_queue(struct msgque_data *msgque) +{ + struct msg1 message; + int cnt = 0, ret; + + while (1) { + ret = msgrcv(msgque->msq_id, &message.mtype, MAX_MSG_SIZE, + 0, IPC_NOWAIT); + if (ret < 0) { + if (errno == ENOMSG) + break; + ksft_test_result_fail("Failed to read IPC message: %m\n"); + ret = -errno; + goto err; + } + if (ret != msgque->messages[cnt].msize) { + ksft_test_result_fail("Wrong message size: %d (expected %d)\n", ret, msgque->messages[cnt].msize); + ret = -EINVAL; + goto err; + } + if (message.mtype != msgque->messages[cnt].mtype) { + ksft_test_result_fail("Wrong message type\n"); + ret = -EINVAL; + goto err; + } + if (memcmp(message.mtext, msgque->messages[cnt].mtext, ret)) { + ksft_test_result_fail("Wrong message content\n"); + ret = -EINVAL; + goto err; + } + cnt++; + } + + if (cnt != msgque->qnum) { + ksft_test_result_fail("Wrong message number\n"); + ret = -EINVAL; + goto err; + } + + ret = 0; +err: + if (msgctl(msgque->msq_id, IPC_RMID, NULL)) { + printf("Failed to destroy queue: %d\n", -errno); + return -errno; + } + return ret; +} + +int dump_queue(struct msgque_data *msgque) +{ + struct msqid_ds ds; + int kern_id; + int i, ret; + + for (kern_id = 0; kern_id < 256; kern_id++) { + ret = msgctl(kern_id, MSG_STAT, &ds); + if (ret < 0) { + if (errno == EINVAL) + continue; + ksft_test_result_fail("Failed to get stats for IPC queue with id %d\n", + kern_id); + return -errno; + } + + if (ret == msgque->msq_id) + break; + } + + msgque->messages = malloc(sizeof(struct msg1) * ds.msg_qnum); + if (msgque->messages == NULL) { + ksft_test_result_fail("Failed to get stats for IPC queue\n"); + return -ENOMEM; + } + + msgque->qnum = ds.msg_qnum; + msgque->mode = ds.msg_perm.mode; + msgque->qbytes = ds.msg_qbytes; + + for (i = 0; i < msgque->qnum; i++) { + ret = msgrcv(msgque->msq_id, &msgque->messages[i].mtype, + MAX_MSG_SIZE, i, IPC_NOWAIT | MSG_COPY); + if (ret < 0) { + if (errno == EOPNOTSUPP) + ksft_exit_skip("MSG_COPY not supported\n"); + + ksft_test_result_fail("Failed to copy IPC message: %m (%d)\n", errno); + return -errno; + } + msgque->messages[i].msize = ret; + } + return 0; +} + +int fill_msgque(struct msgque_data *msgque) +{ + struct msg1 msgbuf; + + msgbuf.mtype = MSG_TYPE; + memcpy(msgbuf.mtext, TEST_STRING, sizeof(TEST_STRING)); + if (msgsnd(msgque->msq_id, &msgbuf.mtype, sizeof(TEST_STRING), + IPC_NOWAIT) != 0) { + ksft_test_result_fail("First message send failed (%m)\n"); + return -errno; + } + + msgbuf.mtype = ANOTHER_MSG_TYPE; + memcpy(msgbuf.mtext, ANOTHER_TEST_STRING, sizeof(ANOTHER_TEST_STRING)); + if (msgsnd(msgque->msq_id, &msgbuf.mtype, sizeof(ANOTHER_TEST_STRING), + IPC_NOWAIT) != 0) { + ksft_test_result_fail("Second message send failed (%m)\n"); + return -errno; + } + return 0; +} + +int main(int argc, char **argv) +{ + int err; + struct msgque_data msgque; + + if (getuid() != 0) + ksft_exit_skip("Please run the test as root - Exiting.\n"); + + msgque.key = ftok(argv[0], 822155650); + if (msgque.key == -1) { + ksft_test_result_fail("Can't make key: %d\n", -errno); + ksft_exit_fail(); + } + + msgque.msq_id = msgget(msgque.key, IPC_CREAT | IPC_EXCL | 0666); + if (msgque.msq_id == -1) { + err = -errno; + ksft_test_result_fail("Can't create queue: %d\n", err); + goto err_out; + } + + err = fill_msgque(&msgque); + if (err) { + ksft_test_result_fail("Failed to fill queue: %d\n", err); + goto err_destroy; + } + + err = dump_queue(&msgque); + if (err) { + ksft_test_result_fail("Failed to dump queue: %d\n", err); + goto err_destroy; + } + + err = check_and_destroy_queue(&msgque); + if (err) { + ksft_test_result_fail("Failed to check and destroy queue: %d\n", err); + goto err_out; + } + + err = restore_queue(&msgque); + if (err) { + ksft_test_result_fail("Failed to restore queue: %d\n", err); + goto err_destroy; + } + + err = check_and_destroy_queue(&msgque); + if (err) { + ksft_test_result_fail("Failed to test queue: %d\n", err); + goto err_out; + } + ksft_exit_pass(); + +err_destroy: + if (msgctl(msgque.msq_id, IPC_RMID, NULL)) { + printf("Failed to destroy queue: %d\n", -errno); + ksft_exit_fail(); + } +err_out: + ksft_exit_fail(); +} -- cgit v1.3.1