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Diffstat (limited to 'tools/testing/selftests/bpf/test_maps.c')
-rw-r--r--tools/testing/selftests/bpf/test_maps.c393
1 files changed, 393 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
index 79601c81e169..4acc772a28c0 100644
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -22,6 +22,7 @@
#include <linux/bpf.h>
#include <bpf/bpf.h>
+#include <bpf/libbpf.h>
#include "bpf_util.h"
static int map_flags;
@@ -438,6 +439,395 @@ static void test_arraymap_percpu_many_keys(void)
close(fd);
}
+static void test_devmap(int task, void *data)
+{
+ int fd;
+ __u32 key, value;
+
+ fd = bpf_create_map(BPF_MAP_TYPE_DEVMAP, sizeof(key), sizeof(value),
+ 2, 0);
+ if (fd < 0) {
+ printf("Failed to create arraymap '%s'!\n", strerror(errno));
+ exit(1);
+ }
+
+ close(fd);
+}
+
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <arpa/inet.h>
+#include <sys/select.h>
+#include <linux/err.h>
+#define SOCKMAP_PARSE_PROG "./sockmap_parse_prog.o"
+#define SOCKMAP_VERDICT_PROG "./sockmap_verdict_prog.o"
+static void test_sockmap(int tasks, void *data)
+{
+ int one = 1, map_fd_rx, map_fd_tx, map_fd_break, s, sc, rc;
+ struct bpf_map *bpf_map_rx, *bpf_map_tx, *bpf_map_break;
+ int ports[] = {50200, 50201, 50202, 50204};
+ int err, i, fd, sfd[6] = {0xdeadbeef};
+ u8 buf[20] = {0x0, 0x5, 0x3, 0x2, 0x1, 0x0};
+ int parse_prog, verdict_prog;
+ struct sockaddr_in addr;
+ struct bpf_object *obj;
+ struct timeval to;
+ __u32 key, value;
+ pid_t pid[tasks];
+ fd_set w;
+
+ /* Create some sockets to use with sockmap */
+ for (i = 0; i < 2; i++) {
+ sfd[i] = socket(AF_INET, SOCK_STREAM, 0);
+ if (sfd[i] < 0)
+ goto out;
+ err = setsockopt(sfd[i], SOL_SOCKET, SO_REUSEADDR,
+ (char *)&one, sizeof(one));
+ if (err) {
+ printf("failed to setsockopt\n");
+ goto out;
+ }
+ err = ioctl(sfd[i], FIONBIO, (char *)&one);
+ if (err < 0) {
+ printf("failed to ioctl\n");
+ goto out;
+ }
+ memset(&addr, 0, sizeof(struct sockaddr_in));
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = inet_addr("127.0.0.1");
+ addr.sin_port = htons(ports[i]);
+ err = bind(sfd[i], (struct sockaddr *)&addr, sizeof(addr));
+ if (err < 0) {
+ printf("failed to bind: err %i: %i:%i\n",
+ err, i, sfd[i]);
+ goto out;
+ }
+ err = listen(sfd[i], 32);
+ if (err < 0) {
+ printf("failed to listen\n");
+ goto out;
+ }
+ }
+
+ for (i = 2; i < 4; i++) {
+ sfd[i] = socket(AF_INET, SOCK_STREAM, 0);
+ if (sfd[i] < 0)
+ goto out;
+ err = setsockopt(sfd[i], SOL_SOCKET, SO_REUSEADDR,
+ (char *)&one, sizeof(one));
+ if (err) {
+ printf("set sock opt\n");
+ goto out;
+ }
+ memset(&addr, 0, sizeof(struct sockaddr_in));
+ addr.sin_family = AF_INET;
+ addr.sin_addr.s_addr = inet_addr("127.0.0.1");
+ addr.sin_port = htons(ports[i - 2]);
+ err = connect(sfd[i], (struct sockaddr *)&addr, sizeof(addr));
+ if (err) {
+ printf("failed to connect\n");
+ goto out;
+ }
+ }
+
+
+ for (i = 4; i < 6; i++) {
+ sfd[i] = accept(sfd[i - 4], NULL, NULL);
+ if (sfd[i] < 0) {
+ printf("accept failed\n");
+ goto out;
+ }
+ }
+
+ /* Test sockmap with connected sockets */
+ fd = bpf_create_map(BPF_MAP_TYPE_SOCKMAP,
+ sizeof(key), sizeof(value),
+ 6, 0);
+ if (fd < 0) {
+ printf("Failed to create sockmap %i\n", fd);
+ goto out_sockmap;
+ }
+
+ /* Test update without programs */
+ for (i = 0; i < 6; i++) {
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
+ if (err) {
+ printf("Failed noprog update sockmap '%i:%i'\n",
+ i, sfd[i]);
+ goto out_sockmap;
+ }
+ }
+
+ /* Test attaching bad fds */
+ err = bpf_prog_attach(-1, fd, BPF_SK_SKB_STREAM_PARSER, 0);
+ if (!err) {
+ printf("Failed invalid parser prog attach\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_prog_attach(-1, fd, BPF_SK_SKB_STREAM_VERDICT, 0);
+ if (!err) {
+ printf("Failed invalid verdict prog attach\n");
+ goto out_sockmap;
+ }
+
+ /* Load SK_SKB program and Attach */
+ err = bpf_prog_load(SOCKMAP_PARSE_PROG,
+ BPF_PROG_TYPE_SK_SKB, &obj, &parse_prog);
+ if (err) {
+ printf("Failed to load SK_SKB parse prog\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_prog_load(SOCKMAP_VERDICT_PROG,
+ BPF_PROG_TYPE_SK_SKB, &obj, &verdict_prog);
+ if (err) {
+ printf("Failed to load SK_SKB verdict prog\n");
+ goto out_sockmap;
+ }
+
+ bpf_map_rx = bpf_object__find_map_by_name(obj, "sock_map_rx");
+ if (IS_ERR(bpf_map_rx)) {
+ printf("Failed to load map rx from verdict prog\n");
+ goto out_sockmap;
+ }
+
+ map_fd_rx = bpf_map__fd(bpf_map_rx);
+ if (map_fd_rx < 0) {
+ printf("Failed to get map fd\n");
+ goto out_sockmap;
+ }
+
+ bpf_map_tx = bpf_object__find_map_by_name(obj, "sock_map_tx");
+ if (IS_ERR(bpf_map_tx)) {
+ printf("Failed to load map tx from verdict prog\n");
+ goto out_sockmap;
+ }
+
+ map_fd_tx = bpf_map__fd(bpf_map_tx);
+ if (map_fd_tx < 0) {
+ printf("Failed to get map tx fd\n");
+ goto out_sockmap;
+ }
+
+ bpf_map_break = bpf_object__find_map_by_name(obj, "sock_map_break");
+ if (IS_ERR(bpf_map_break)) {
+ printf("Failed to load map tx from verdict prog\n");
+ goto out_sockmap;
+ }
+
+ map_fd_break = bpf_map__fd(bpf_map_break);
+ if (map_fd_break < 0) {
+ printf("Failed to get map tx fd\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_prog_attach(parse_prog, map_fd_break,
+ BPF_SK_SKB_STREAM_PARSER, 0);
+ if (!err) {
+ printf("Allowed attaching SK_SKB program to invalid map\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_prog_attach(parse_prog, map_fd_rx,
+ BPF_SK_SKB_STREAM_PARSER, 0);
+ if (err) {
+ printf("Failed stream parser bpf prog attach\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_prog_attach(verdict_prog, map_fd_rx,
+ BPF_SK_SKB_STREAM_VERDICT, 0);
+ if (err) {
+ printf("Failed stream verdict bpf prog attach\n");
+ goto out_sockmap;
+ }
+
+ /* Test map update elem afterwards fd lives in fd and map_fd */
+ for (i = 0; i < 6; i++) {
+ err = bpf_map_update_elem(map_fd_rx, &i, &sfd[i], BPF_ANY);
+ if (err) {
+ printf("Failed map_fd_rx update sockmap %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ err = bpf_map_update_elem(map_fd_tx, &i, &sfd[i], BPF_ANY);
+ if (err) {
+ printf("Failed map_fd_tx update sockmap %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ }
+
+ /* Test map delete elem and remove send/recv sockets */
+ for (i = 2; i < 4; i++) {
+ err = bpf_map_delete_elem(map_fd_rx, &i);
+ if (err) {
+ printf("Failed delete sockmap rx %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ err = bpf_map_delete_elem(map_fd_tx, &i);
+ if (err) {
+ printf("Failed delete sockmap tx %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ }
+
+ /* Test map send/recv */
+ for (i = 0; i < 2; i++) {
+ buf[0] = i;
+ buf[1] = 0x5;
+ sc = send(sfd[2], buf, 20, 0);
+ if (sc < 0) {
+ printf("Failed sockmap send\n");
+ goto out_sockmap;
+ }
+
+ FD_ZERO(&w);
+ FD_SET(sfd[3], &w);
+ to.tv_sec = 1;
+ to.tv_usec = 0;
+ s = select(sfd[3] + 1, &w, NULL, NULL, &to);
+ if (s == -1) {
+ perror("Failed sockmap select()");
+ goto out_sockmap;
+ } else if (!s) {
+ printf("Failed sockmap unexpected timeout\n");
+ goto out_sockmap;
+ }
+
+ if (!FD_ISSET(sfd[3], &w)) {
+ printf("Failed sockmap select/recv\n");
+ goto out_sockmap;
+ }
+
+ rc = recv(sfd[3], buf, sizeof(buf), 0);
+ if (rc < 0) {
+ printf("Failed sockmap recv\n");
+ goto out_sockmap;
+ }
+ }
+
+ /* Negative null entry lookup from datapath should be dropped */
+ buf[0] = 1;
+ buf[1] = 12;
+ sc = send(sfd[2], buf, 20, 0);
+ if (sc < 0) {
+ printf("Failed sockmap send\n");
+ goto out_sockmap;
+ }
+
+ /* Push fd into same slot */
+ i = 2;
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_NOEXIST);
+ if (!err) {
+ printf("Failed allowed sockmap dup slot BPF_NOEXIST\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
+ if (err) {
+ printf("Failed sockmap update new slot BPF_ANY\n");
+ goto out_sockmap;
+ }
+
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_EXIST);
+ if (err) {
+ printf("Failed sockmap update new slot BPF_EXIST\n");
+ goto out_sockmap;
+ }
+
+ /* Delete the elems without programs */
+ for (i = 0; i < 6; i++) {
+ err = bpf_map_delete_elem(fd, &i);
+ if (err) {
+ printf("Failed delete sockmap %i '%i:%i'\n",
+ err, i, sfd[i]);
+ }
+ }
+
+ /* Test having multiple maps open and set with programs on same fds */
+ err = bpf_prog_attach(parse_prog, fd,
+ BPF_SK_SKB_STREAM_PARSER, 0);
+ if (err) {
+ printf("Failed fd bpf parse prog attach\n");
+ goto out_sockmap;
+ }
+ err = bpf_prog_attach(verdict_prog, fd,
+ BPF_SK_SKB_STREAM_VERDICT, 0);
+ if (err) {
+ printf("Failed fd bpf verdict prog attach\n");
+ goto out_sockmap;
+ }
+
+ for (i = 4; i < 6; i++) {
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_ANY);
+ if (!err) {
+ printf("Failed allowed duplicate programs in update ANY sockmap %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_NOEXIST);
+ if (!err) {
+ printf("Failed allowed duplicate program in update NOEXIST sockmap %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ err = bpf_map_update_elem(fd, &i, &sfd[i], BPF_EXIST);
+ if (!err) {
+ printf("Failed allowed duplicate program in update EXIST sockmap %i '%i:%i'\n",
+ err, i, sfd[i]);
+ goto out_sockmap;
+ }
+ }
+
+ /* Test tasks number of forked operations */
+ for (i = 0; i < tasks; i++) {
+ pid[i] = fork();
+ if (pid[i] == 0) {
+ for (i = 0; i < 6; i++) {
+ bpf_map_delete_elem(map_fd_tx, &i);
+ bpf_map_delete_elem(map_fd_rx, &i);
+ bpf_map_update_elem(map_fd_tx, &i,
+ &sfd[i], BPF_ANY);
+ bpf_map_update_elem(map_fd_rx, &i,
+ &sfd[i], BPF_ANY);
+ }
+ exit(0);
+ } else if (pid[i] == -1) {
+ printf("Couldn't spawn #%d process!\n", i);
+ exit(1);
+ }
+ }
+
+ for (i = 0; i < tasks; i++) {
+ int status;
+
+ assert(waitpid(pid[i], &status, 0) == pid[i]);
+ assert(status == 0);
+ }
+
+ /* Test map close sockets */
+ for (i = 0; i < 6; i++)
+ close(sfd[i]);
+ close(fd);
+ close(map_fd_rx);
+ bpf_object__close(obj);
+ return;
+out:
+ for (i = 0; i < 6; i++)
+ close(sfd[i]);
+ printf("Failed to create sockmap '%i:%s'!\n", i, strerror(errno));
+ exit(1);
+out_sockmap:
+ for (i = 0; i < 6; i++)
+ close(sfd[i]);
+ close(fd);
+ exit(1);
+}
+
#define MAP_SIZE (32 * 1024)
static void test_map_large(void)
@@ -605,6 +995,9 @@ static void run_all_tests(void)
test_arraymap_percpu_many_keys();
+ test_devmap(0, NULL);
+ test_sockmap(0, NULL);
+
test_map_large();
test_map_parallel();
test_map_stress();
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-04 20:26:57 +0300