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Message-ID: <160384962569.698509.4528110378641773523.stgit@localhost.localdomain>
Date: Tue, 27 Oct 2020 18:47:05 -0700
From: Alexander Duyck <alexander.duyck@...il.com>
To: bpf@...r.kernel.org
Cc: ast@...nel.org, daniel@...earbox.net, kafai@...com,
john.fastabend@...il.com, kernel-team@...com,
netdev@...r.kernel.org, edumazet@...gle.com, brakmo@...com,
alexanderduyck@...com
Subject: [bpf-next PATCH 1/4] selftests/bpf: Move test_tcppbf_user into
test_progs
From: Alexander Duyck <alexanderduyck@...com>
Recently a bug was missed due to the fact that test_tcpbpf_user is not a
part of test_progs. In order to prevent similar issues in the future move
the test functionality into test_progs. By doing this we can make certain
that it is a part of standard testing and will not be overlooked.
As a part of moving the functionality into test_progs it is necessary to
integrate with the test_progs framework and to drop any redundant code.
This patch:
1. Cleans up the include headers
2. Dropped a duplicate definition of bpf_find_map
3. Replaced printf calls with fprintf to stderr
4. Renamed main to test_tcpbpf_user
5. Dropped return value in favor of CHECK calls to check for errors
Signed-off-by: Alexander Duyck <alexanderduyck@...com>
---
tools/testing/selftests/bpf/Makefile | 3
.../testing/selftests/bpf/prog_tests/tcpbpf_user.c | 138 +++++++++++++++++
tools/testing/selftests/bpf/test_tcpbpf_user.c | 165 --------------------
3 files changed, 139 insertions(+), 167 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c
delete mode 100644 tools/testing/selftests/bpf/test_tcpbpf_user.c
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 542768f5195b..50e5b18fc455 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -32,7 +32,7 @@ LDLIBS += -lcap -lelf -lz -lrt -lpthread
# Order correspond to 'make run_tests' order
TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
- test_verifier_log test_dev_cgroup test_tcpbpf_user \
+ test_verifier_log test_dev_cgroup \
test_sock test_sockmap get_cgroup_id_user test_socket_cookie \
test_cgroup_storage \
test_netcnt test_tcpnotify_user test_sysctl \
@@ -163,7 +163,6 @@ $(OUTPUT)/test_sock: cgroup_helpers.c
$(OUTPUT)/test_sock_addr: cgroup_helpers.c
$(OUTPUT)/test_socket_cookie: cgroup_helpers.c
$(OUTPUT)/test_sockmap: cgroup_helpers.c
-$(OUTPUT)/test_tcpbpf_user: cgroup_helpers.c
$(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
$(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
$(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
diff --git a/tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c b/tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c
new file mode 100644
index 000000000000..5becab8b04e3
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c
@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <inttypes.h>
+#include <test_progs.h>
+
+#include "test_tcpbpf.h"
+#include "cgroup_helpers.h"
+
+#define CG_NAME "/tcpbpf-user-test"
+
+/* 3 comes from one listening socket + both ends of the connection */
+#define EXPECTED_CLOSE_EVENTS 3
+
+#define EXPECT_EQ(expected, actual, fmt) \
+ do { \
+ if ((expected) != (actual)) { \
+ fprintf(stderr, " Value of: " #actual "\n" \
+ " Actual: %" fmt "\n" \
+ " Expected: %" fmt "\n", \
+ (actual), (expected)); \
+ ret--; \
+ } \
+ } while (0)
+
+int verify_result(const struct tcpbpf_globals *result)
+{
+ __u32 expected_events;
+ int ret = 0;
+
+ expected_events = ((1 << BPF_SOCK_OPS_TIMEOUT_INIT) |
+ (1 << BPF_SOCK_OPS_RWND_INIT) |
+ (1 << BPF_SOCK_OPS_TCP_CONNECT_CB) |
+ (1 << BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB) |
+ (1 << BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB) |
+ (1 << BPF_SOCK_OPS_NEEDS_ECN) |
+ (1 << BPF_SOCK_OPS_STATE_CB) |
+ (1 << BPF_SOCK_OPS_TCP_LISTEN_CB));
+
+ EXPECT_EQ(expected_events, result->event_map, "#" PRIx32);
+ EXPECT_EQ(501ULL, result->bytes_received, "llu");
+ EXPECT_EQ(1002ULL, result->bytes_acked, "llu");
+ EXPECT_EQ(1, result->data_segs_in, PRIu32);
+ EXPECT_EQ(1, result->data_segs_out, PRIu32);
+ EXPECT_EQ(0x80, result->bad_cb_test_rv, PRIu32);
+ EXPECT_EQ(0, result->good_cb_test_rv, PRIu32);
+ EXPECT_EQ(1, result->num_listen, PRIu32);
+ EXPECT_EQ(EXPECTED_CLOSE_EVENTS, result->num_close_events, PRIu32);
+
+ return ret;
+}
+
+int verify_sockopt_result(int sock_map_fd)
+{
+ __u32 key = 0;
+ int ret = 0;
+ int res;
+ int rv;
+
+ /* check setsockopt for SAVE_SYN */
+ rv = bpf_map_lookup_elem(sock_map_fd, &key, &res);
+ EXPECT_EQ(0, rv, "d");
+ EXPECT_EQ(0, res, "d");
+ key = 1;
+ /* check getsockopt for SAVED_SYN */
+ rv = bpf_map_lookup_elem(sock_map_fd, &key, &res);
+ EXPECT_EQ(0, rv, "d");
+ EXPECT_EQ(1, res, "d");
+ return ret;
+}
+
+void test_tcpbpf_user(void)
+{
+ const char *file = "test_tcpbpf_kern.o";
+ int prog_fd, map_fd, sock_map_fd;
+ struct tcpbpf_globals g = {0};
+ struct bpf_object *obj;
+ int cg_fd = -1;
+ int retry = 10;
+ __u32 key = 0;
+ int rv;
+
+ cg_fd = cgroup_setup_and_join(CG_NAME);
+ if (CHECK_FAIL(cg_fd < 0))
+ goto err;
+
+ if (CHECK_FAIL(bpf_prog_load(file, BPF_PROG_TYPE_SOCK_OPS, &obj, &prog_fd))) {
+ fprintf(stderr, "FAILED: load_bpf_file failed for: %s\n", file);
+ goto err;
+ }
+
+ rv = bpf_prog_attach(prog_fd, cg_fd, BPF_CGROUP_SOCK_OPS, 0);
+ if (CHECK_FAIL(rv)) {
+ fprintf(stderr, "FAILED: bpf_prog_attach: %d (%s)\n",
+ errno, strerror(errno));
+ goto err;
+ }
+
+ if (CHECK_FAIL(system("./tcp_server.py"))) {
+ fprintf(stderr, "FAILED: TCP server\n");
+ goto err;
+ }
+
+ map_fd = bpf_find_map(__func__, obj, "global_map");
+ if (CHECK_FAIL(map_fd < 0))
+ goto err;
+
+ sock_map_fd = bpf_find_map(__func__, obj, "sockopt_results");
+ if (CHECK_FAIL(sock_map_fd < 0))
+ goto err;
+
+retry_lookup:
+ rv = bpf_map_lookup_elem(map_fd, &key, &g);
+ if (CHECK_FAIL(rv != 0)) {
+ fprintf(stderr, "FAILED: bpf_map_lookup_elem returns %d\n", rv);
+ goto err;
+ }
+
+ if (g.num_close_events != EXPECTED_CLOSE_EVENTS && retry--) {
+ fprintf(stderr,
+ "Unexpected number of close events (%d), retrying!\n",
+ g.num_close_events);
+ usleep(100);
+ goto retry_lookup;
+ }
+
+ if (CHECK_FAIL(verify_result(&g))) {
+ fprintf(stderr, "FAILED: Wrong stats\n");
+ goto err;
+ }
+
+ if (CHECK_FAIL(verify_sockopt_result(sock_map_fd))) {
+ fprintf(stderr, "FAILED: Wrong sockopt stats\n");
+ goto err;
+ }
+err:
+ bpf_prog_detach(cg_fd, BPF_CGROUP_SOCK_OPS);
+ close(cg_fd);
+ cleanup_cgroup_environment();
+}
diff --git a/tools/testing/selftests/bpf/test_tcpbpf_user.c b/tools/testing/selftests/bpf/test_tcpbpf_user.c
deleted file mode 100644
index 74a9e49988b6..000000000000
--- a/tools/testing/selftests/bpf/test_tcpbpf_user.c
+++ /dev/null
@@ -1,165 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <linux/bpf.h>
-#include <sys/types.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-
-#include "bpf_rlimit.h"
-#include "bpf_util.h"
-#include "cgroup_helpers.h"
-
-#include "test_tcpbpf.h"
-
-/* 3 comes from one listening socket + both ends of the connection */
-#define EXPECTED_CLOSE_EVENTS 3
-
-#define EXPECT_EQ(expected, actual, fmt) \
- do { \
- if ((expected) != (actual)) { \
- printf(" Value of: " #actual "\n" \
- " Actual: %" fmt "\n" \
- " Expected: %" fmt "\n", \
- (actual), (expected)); \
- ret--; \
- } \
- } while (0)
-
-int verify_result(const struct tcpbpf_globals *result)
-{
- __u32 expected_events;
- int ret = 0;
-
- expected_events = ((1 << BPF_SOCK_OPS_TIMEOUT_INIT) |
- (1 << BPF_SOCK_OPS_RWND_INIT) |
- (1 << BPF_SOCK_OPS_TCP_CONNECT_CB) |
- (1 << BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB) |
- (1 << BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB) |
- (1 << BPF_SOCK_OPS_NEEDS_ECN) |
- (1 << BPF_SOCK_OPS_STATE_CB) |
- (1 << BPF_SOCK_OPS_TCP_LISTEN_CB));
-
- EXPECT_EQ(expected_events, result->event_map, "#" PRIx32);
- EXPECT_EQ(501ULL, result->bytes_received, "llu");
- EXPECT_EQ(1002ULL, result->bytes_acked, "llu");
- EXPECT_EQ(1, result->data_segs_in, PRIu32);
- EXPECT_EQ(1, result->data_segs_out, PRIu32);
- EXPECT_EQ(0x80, result->bad_cb_test_rv, PRIu32);
- EXPECT_EQ(0, result->good_cb_test_rv, PRIu32);
- EXPECT_EQ(1, result->num_listen, PRIu32);
- EXPECT_EQ(EXPECTED_CLOSE_EVENTS, result->num_close_events, PRIu32);
-
- return ret;
-}
-
-int verify_sockopt_result(int sock_map_fd)
-{
- __u32 key = 0;
- int ret = 0;
- int res;
- int rv;
-
- /* check setsockopt for SAVE_SYN */
- rv = bpf_map_lookup_elem(sock_map_fd, &key, &res);
- EXPECT_EQ(0, rv, "d");
- EXPECT_EQ(0, res, "d");
- key = 1;
- /* check getsockopt for SAVED_SYN */
- rv = bpf_map_lookup_elem(sock_map_fd, &key, &res);
- EXPECT_EQ(0, rv, "d");
- EXPECT_EQ(1, res, "d");
- return ret;
-}
-
-static int bpf_find_map(const char *test, struct bpf_object *obj,
- const char *name)
-{
- struct bpf_map *map;
-
- map = bpf_object__find_map_by_name(obj, name);
- if (!map) {
- printf("%s:FAIL:map '%s' not found\n", test, name);
- return -1;
- }
- return bpf_map__fd(map);
-}
-
-int main(int argc, char **argv)
-{
- const char *file = "test_tcpbpf_kern.o";
- int prog_fd, map_fd, sock_map_fd;
- struct tcpbpf_globals g = {0};
- const char *cg_path = "/foo";
- int error = EXIT_FAILURE;
- struct bpf_object *obj;
- int cg_fd = -1;
- int retry = 10;
- __u32 key = 0;
- int rv;
-
- cg_fd = cgroup_setup_and_join(cg_path);
- if (cg_fd < 0)
- goto err;
-
- if (bpf_prog_load(file, BPF_PROG_TYPE_SOCK_OPS, &obj, &prog_fd)) {
- printf("FAILED: load_bpf_file failed for: %s\n", file);
- goto err;
- }
-
- rv = bpf_prog_attach(prog_fd, cg_fd, BPF_CGROUP_SOCK_OPS, 0);
- if (rv) {
- printf("FAILED: bpf_prog_attach: %d (%s)\n",
- error, strerror(errno));
- goto err;
- }
-
- if (system("./tcp_server.py")) {
- printf("FAILED: TCP server\n");
- goto err;
- }
-
- map_fd = bpf_find_map(__func__, obj, "global_map");
- if (map_fd < 0)
- goto err;
-
- sock_map_fd = bpf_find_map(__func__, obj, "sockopt_results");
- if (sock_map_fd < 0)
- goto err;
-
-retry_lookup:
- rv = bpf_map_lookup_elem(map_fd, &key, &g);
- if (rv != 0) {
- printf("FAILED: bpf_map_lookup_elem returns %d\n", rv);
- goto err;
- }
-
- if (g.num_close_events != EXPECTED_CLOSE_EVENTS && retry--) {
- printf("Unexpected number of close events (%d), retrying!\n",
- g.num_close_events);
- usleep(100);
- goto retry_lookup;
- }
-
- if (verify_result(&g)) {
- printf("FAILED: Wrong stats\n");
- goto err;
- }
-
- if (verify_sockopt_result(sock_map_fd)) {
- printf("FAILED: Wrong sockopt stats\n");
- goto err;
- }
-
- printf("PASSED!\n");
- error = 0;
-err:
- bpf_prog_detach(cg_fd, BPF_CGROUP_SOCK_OPS);
- close(cg_fd);
- cleanup_cgroup_environment();
- return error;
-}
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