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Commit e3e02e1d authored by Stanislav Fomichev's avatar Stanislav Fomichev Committed by Alexei Starovoitov
Browse files

selftests/bpf: test_progs: convert test_sockopt_inherit 



Move the files, adjust includes, remove entry from Makefile & .gitignore

I also added pthread_cond_wait for the server thread startup. We don't
want to connect to the server that's not yet up (for some reason
this existing race is now more prominent with test_progs).

Signed-off-by: default avatarStanislav Fomichev <sdf@google.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 3886bd7c

tools/testing/selftests/bpf/.gitignore

+0 −1
Original line number Diff line number Diff line
@@ -39,5 +39,4 @@ libbpf.so.* 
test_hashmap

test_btf_dump

xdping

test_sockopt_inherit

test_tcp_rtt

tools/testing/selftests/bpf/Makefile

+1 −3
Original line number Diff line number Diff line
@@ -28,8 +28,7 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test 
	test_sock test_btf test_sockmap get_cgroup_id_user test_socket_cookie \

	test_cgroup_storage test_select_reuseport test_section_names \

	test_netcnt test_tcpnotify_user test_sock_fields test_sysctl test_hashmap \

	test_btf_dump test_cgroup_attach xdping \

	test_sockopt_inherit test_tcp_rtt

	test_btf_dump test_cgroup_attach xdping test_tcp_rtt



BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c)))

TEST_GEN_FILES = $(BPF_OBJ_FILES)
@@ -113,7 +112,6 @@ $(OUTPUT)/test_netcnt: cgroup_helpers.c 
$(OUTPUT)/test_sock_fields: cgroup_helpers.c

$(OUTPUT)/test_sysctl: cgroup_helpers.c

$(OUTPUT)/test_cgroup_attach: cgroup_helpers.c

$(OUTPUT)/test_sockopt_inherit: cgroup_helpers.c

$(OUTPUT)/test_tcp_rtt: cgroup_helpers.c



.PHONY: force

tools/testing/selftests/bpf/test_sockopt_inherit.c→tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c

+42 −60
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <error.h>

#include <errno.h>

#include <stdio.h>

#include <unistd.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <pthread.h>



#include <linux/filter.h>

#include <bpf/bpf.h>

#include <bpf/libbpf.h>



#include "bpf_rlimit.h"

#include "bpf_util.h"

#include <test_progs.h>

#include "cgroup_helpers.h"



#define CG_PATH				"/sockopt_inherit"

#define SOL_CUSTOM			0xdeadbeef

#define CUSTOM_INHERIT1			0

#define CUSTOM_INHERIT2			1
@@ -74,6 +59,9 @@ static int verify_sockopt(int fd, int optname, const char *msg, char expected) 
	return 0;

}



static pthread_mutex_t server_started_mtx = PTHREAD_MUTEX_INITIALIZER;

static pthread_cond_t server_started = PTHREAD_COND_INITIALIZER;



static void *server_thread(void *arg)

{

	struct sockaddr_storage addr;
@@ -82,16 +70,26 @@ static void *server_thread(void *arg) 
	int client_fd;

	int err = 0;



	if (listen(fd, 1) < 0)

		error(1, errno, "Failed to listed on socket");

	err = listen(fd, 1);



	pthread_mutex_lock(&server_started_mtx);

	pthread_cond_signal(&server_started);

	pthread_mutex_unlock(&server_started_mtx);



	if (CHECK_FAIL(err < 0)) {

		perror("Failed to listed on socket");

		return NULL;

	}



	err += verify_sockopt(fd, CUSTOM_INHERIT1, "listen", 1);

	err += verify_sockopt(fd, CUSTOM_INHERIT2, "listen", 1);

	err += verify_sockopt(fd, CUSTOM_LISTENER, "listen", 1);



	client_fd = accept(fd, (struct sockaddr *)&addr, &len);

	if (client_fd < 0)

		error(1, errno, "Failed to accept client");

	if (CHECK_FAIL(client_fd < 0)) {

		perror("Failed to accept client");

		return NULL;

	}



	err += verify_sockopt(client_fd, CUSTOM_INHERIT1, "accept", 1);

	err += verify_sockopt(client_fd, CUSTOM_INHERIT2, "accept", 1);
@@ -167,7 +165,7 @@ static int prog_attach(struct bpf_object *obj, int cgroup_fd, const char *title) 
	return 0;

}



static int run_test(int cgroup_fd)

static void run_test(int cgroup_fd)

{

	struct bpf_prog_load_attr attr = {

		.file = "./sockopt_inherit.o",
@@ -180,40 +178,41 @@ static int run_test(int cgroup_fd) 
	int err;



	err = bpf_prog_load_xattr(&attr, &obj, &ignored);

	if (err) {

		log_err("Failed to load BPF object");

		return -1;

	}

	if (CHECK_FAIL(err))

		return;



	err = prog_attach(obj, cgroup_fd, "cgroup/getsockopt");

	if (err)

	if (CHECK_FAIL(err))

		goto close_bpf_object;



	err = prog_attach(obj, cgroup_fd, "cgroup/setsockopt");

	if (err)

	if (CHECK_FAIL(err))

		goto close_bpf_object;



	server_fd = start_server();

	if (server_fd < 0) {

		err = -1;

	if (CHECK_FAIL(server_fd < 0))

		goto close_bpf_object;



	if (CHECK_FAIL(pthread_create(&tid, NULL, server_thread,

				      (void *)&server_fd)))

		goto close_bpf_object;

	}



	pthread_create(&tid, NULL, server_thread, (void *)&server_fd);

	pthread_mutex_lock(&server_started_mtx);

	pthread_cond_wait(&server_started, &server_started_mtx);

	pthread_mutex_unlock(&server_started_mtx);



	client_fd = connect_to_server(server_fd);

	if (client_fd < 0) {

		err = -1;

	if (CHECK_FAIL(client_fd < 0))

		goto close_server_fd;

	}



	err += verify_sockopt(client_fd, CUSTOM_INHERIT1, "connect", 0);

	err += verify_sockopt(client_fd, CUSTOM_INHERIT2, "connect", 0);

	err += verify_sockopt(client_fd, CUSTOM_LISTENER, "connect", 0);

	CHECK_FAIL(verify_sockopt(client_fd, CUSTOM_INHERIT1, "connect", 0));

	CHECK_FAIL(verify_sockopt(client_fd, CUSTOM_INHERIT2, "connect", 0));

	CHECK_FAIL(verify_sockopt(client_fd, CUSTOM_LISTENER, "connect", 0));



	pthread_join(tid, &server_err);



	err += (int)(long)server_err;

	err = (int)(long)server_err;

	CHECK_FAIL(err);



	close(client_fd);
@@ -221,33 +220,16 @@ static int run_test(int cgroup_fd) 
	close(server_fd);

close_bpf_object:

	bpf_object__close(obj);

	return err;

}



int main(int args, char **argv)

void test_sockopt_inherit(void)

{

	int cgroup_fd;

	int err = EXIT_SUCCESS;



	if (setup_cgroup_environment())

		return err;



	cgroup_fd = create_and_get_cgroup(CG_PATH);

	if (cgroup_fd < 0)

		goto cleanup_cgroup_env;



	if (join_cgroup(CG_PATH))

		goto cleanup_cgroup;



	if (run_test(cgroup_fd))

		err = EXIT_FAILURE;



	printf("test_sockopt_inherit: %s\n",

	       err == EXIT_SUCCESS ? "PASSED" : "FAILED");

	cgroup_fd = test__join_cgroup("/sockopt_inherit");

	if (CHECK_FAIL(cgroup_fd < 0))

		return;



cleanup_cgroup:

	run_test(cgroup_fd);

	close(cgroup_fd);

cleanup_cgroup_env:

	cleanup_cgroup_environment();

	return err;

}