Signed-off-by: Mauricio Vasquez B <mauricio.vasq...@polito.it> --- tools/include/uapi/linux/bpf.h | 5 ++ tools/testing/selftests/bpf/test_maps.c | 71 +++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+)
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h index 0ebaaf7f3568..2c171c40eb45 100644 --- a/tools/include/uapi/linux/bpf.h +++ b/tools/include/uapi/linux/bpf.h @@ -120,6 +120,7 @@ enum bpf_map_type { BPF_MAP_TYPE_CPUMAP, BPF_MAP_TYPE_XSKMAP, BPF_MAP_TYPE_SOCKHASH, + BPF_MAP_TYPE_QUEUE, }; enum bpf_prog_type { @@ -255,6 +256,10 @@ enum bpf_attach_type { /* Flag for stack_map, store build_id+offset instead of pointer */ #define BPF_F_STACK_BUILD_ID (1U << 5) +/* Flags for queue_map, type of queue */ +#define BPF_F_QUEUE_FIFO (1U << 16) +#define BPF_F_QUEUE_LIFO (2U << 16) + enum bpf_stack_build_id_status { /* user space need an empty entry to identify end of a trace */ BPF_STACK_BUILD_ID_EMPTY = 0, diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c index 6c253343a6f9..96b551e69b5c 100644 --- a/tools/testing/selftests/bpf/test_maps.c +++ b/tools/testing/selftests/bpf/test_maps.c @@ -457,6 +457,76 @@ static void test_devmap(int task, void *data) close(fd); } +static void test_queuemap(int task, void *data) +{ + __u32 value; + int fd, i; + + /* test FIFO */ + fd = bpf_create_map(BPF_MAP_TYPE_QUEUE, 0, sizeof(value), 32, + BPF_F_QUEUE_FIFO); + if (fd < 0) { + printf("Failed to create queuemap '%s'!\n", strerror(errno)); + exit(1); + } + + /* Push 32 elements */ + for (i = 0; i < 32; i++) { + value = 1000 - i * 3; + assert(bpf_map_update_elem(fd, NULL, &value, 0) == 0); + } + + /* Check that element cannot be pushed due to max_entries limit */ + value = 1000; + assert(bpf_map_update_elem(fd, NULL, &value, 0) == -1 && errno == E2BIG); + + /* Pop all elements */ + for (i = 0; i < 32; i++) + assert(bpf_map_lookup_elem(fd, NULL, &value) == 0 && + value == (1000 - i * 3)); + + /* Check that there are not elements left */ + assert(bpf_map_lookup_elem(fd, NULL, &value) == -1 && errno == ENOENT); + + assert(bpf_map_delete_elem(fd, NULL) == -1 && errno == EINVAL); + assert(bpf_map_get_next_key(fd, NULL, NULL) == -1 && errno == EINVAL); + + close(fd); + + /* test LIFO */ + fd = bpf_create_map(BPF_MAP_TYPE_QUEUE, 0, sizeof(value), 32, + BPF_F_QUEUE_LIFO); + if (fd < 0) { + printf("Failed to create queuemap '%s'!\n", strerror(errno)); + exit(1); + } + + /* Push 32 elements */ + for (i = 0; i < 32; i++) { + value = 1000 - i * 3; + assert(bpf_map_update_elem(fd, NULL, &value, 0) == 0); + } + + /* Check that element cannot be pushed due to max_entries limit */ + value = 1000; + assert(bpf_map_update_elem(fd, NULL, &value, 0) == -1 && + errno == E2BIG); + + /* Pop all elements */ + for (i = 31; i >= 0; i--) + assert(bpf_map_lookup_elem(fd, NULL, &value) == 0 && + value == (1000 - i * 3)); + + /* Check that there are not elements left */ + assert(bpf_map_lookup_elem(fd, NULL, &value) == -1 && + errno == ENOENT); + + assert(bpf_map_delete_elem(fd, NULL) == -1 && errno == EINVAL); + assert(bpf_map_get_next_key(fd, NULL, NULL) == -1 && errno == EINVAL); + + close(fd); +} + #include <sys/socket.h> #include <sys/ioctl.h> #include <arpa/inet.h> @@ -1162,6 +1232,7 @@ static void run_all_tests(void) test_arraymap_percpu_many_keys(); test_devmap(0, NULL); + test_queuemap(0, NULL); test_sockmap(0, NULL); test_map_large(); -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#1421): https://lists.iovisor.org/g/iovisor-dev/message/1421 Mute This Topic: https://lists.iovisor.org/mt/24146812/21656 Group Owner: iovisor-dev+ow...@lists.iovisor.org Unsubscribe: https://lists.iovisor.org/g/iovisor-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-