selftests/bpf: Move reuseport tests under prog_tests/

Do a pure move the show the actual work needed to adapt the tests in
subsequent patch at the cost of breaking test_progs build for the moment.

Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191212102259.418536-10-jakub@cloudflare.com

1 files changed, 0 insertions, 811 deletions

diff --git a/tools/testing/selftests/bpf/test_select_reuseport.c b/tools/testing/selftests/bpf/test_select_reuseport.c
deleted file mode 100644
index 0d5687feb689..000000000000
--- a/tools/testing/selftests/bpf/test_select_reuseport.c
+++ /dev/null
@@ -1,811 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Copyright (c) 2018 Facebook */
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdbool.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <fcntl.h>
-#include <linux/bpf.h>
-#include <linux/err.h>
-#include <linux/types.h>
-#include <linux/if_ether.h>
-#include <sys/types.h>
-#include <sys/epoll.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#include "bpf_rlimit.h"
-#include "bpf_util.h"
-#include "test_select_reuseport_common.h"
-
-#define MIN_TCPHDR_LEN 20
-#define UDPHDR_LEN 8
-
-#define TCP_SYNCOOKIE_SYSCTL "/proc/sys/net/ipv4/tcp_syncookies"
-#define TCP_FO_SYSCTL "/proc/sys/net/ipv4/tcp_fastopen"
-#define REUSEPORT_ARRAY_SIZE 32
-
-static int result_map, tmp_index_ovr_map, linum_map, data_check_map;
-static enum result expected_results[NR_RESULTS];
-static int sk_fds[REUSEPORT_ARRAY_SIZE];
-static int reuseport_array = -1, outer_map = -1;
-static int select_by_skb_data_prog;
-static int saved_tcp_syncookie;
-static struct bpf_object *obj;
-static int saved_tcp_fo;
-static __u32 index_zero;
-static int epfd;
-
-static union sa46 {
-	struct sockaddr_in6 v6;
-	struct sockaddr_in v4;
-	sa_family_t family;
-} srv_sa;
-
-#define CHECK(condition, tag, format...) ({				\
-	int __ret = !!(condition);					\
-	if (__ret) {							\
-		printf("%s(%d):FAIL:%s ", __func__, __LINE__, tag);	\
-		printf(format);						\
-		exit(-1);						\
-	}								\
-})
-
-#define RET_ERR(condition, tag, format...) ({				\
-	int __ret = !!(condition);					\
-	if (__ret) {							\
-		printf("%s(%d):FAIL:%s ", __func__, __LINE__, tag);	\
-		printf(format);						\
-		return -1;						\
-	}								\
-})
-
-static int create_maps(void)
-{
-	struct bpf_create_map_attr attr = {};
-
-	/* Creating reuseport_array */
-	attr.name = "reuseport_array";
-	attr.map_type = BPF_MAP_TYPE_REUSEPORT_SOCKARRAY;
-	attr.key_size = sizeof(__u32);
-	attr.value_size = sizeof(__u32);
-	attr.max_entries = REUSEPORT_ARRAY_SIZE;
-
-	reuseport_array = bpf_create_map_xattr(&attr);
-	RET_ERR(reuseport_array == -1, "creating reuseport_array",
-		"reuseport_array:%d errno:%d\n", reuseport_array, errno);
-
-	/* Creating outer_map */
-	attr.name = "outer_map";
-	attr.map_type = BPF_MAP_TYPE_ARRAY_OF_MAPS;
-	attr.key_size = sizeof(__u32);
-	attr.value_size = sizeof(__u32);
-	attr.max_entries = 1;
-	attr.inner_map_fd = reuseport_array;
-	outer_map = bpf_create_map_xattr(&attr);
-	RET_ERR(outer_map == -1, "creating outer_map",
-		"outer_map:%d errno:%d\n", outer_map, errno);
-
-	return 0;
-}
-
-static int prepare_bpf_obj(void)
-{
-	struct bpf_program *prog;
-	struct bpf_map *map;
-	int err;
-
-	obj = bpf_object__open("test_select_reuseport_kern.o");
-	RET_ERR(IS_ERR_OR_NULL(obj), "open test_select_reuseport_kern.o",
-		"obj:%p PTR_ERR(obj):%ld\n", obj, PTR_ERR(obj));
-
-	map = bpf_object__find_map_by_name(obj, "outer_map");
-	RET_ERR(!map, "find outer_map", "!map\n");
-	err = bpf_map__reuse_fd(map, outer_map);
-	RET_ERR(err, "reuse outer_map", "err:%d\n", err);
-
-	err = bpf_object__load(obj);
-	RET_ERR(err, "load bpf_object", "err:%d\n", err);
-
-	prog = bpf_program__next(NULL, obj);
-	RET_ERR(!prog, "get first bpf_program", "!prog\n");
-	select_by_skb_data_prog = bpf_program__fd(prog);
-	RET_ERR(select_by_skb_data_prog == -1, "get prog fd",
-		"select_by_skb_data_prog:%d\n", select_by_skb_data_prog);
-
-	map = bpf_object__find_map_by_name(obj, "result_map");
-	RET_ERR(!map, "find result_map", "!map\n");
-	result_map = bpf_map__fd(map);
-	RET_ERR(result_map == -1, "get result_map fd",
-		"result_map:%d\n", result_map);
-
-	map = bpf_object__find_map_by_name(obj, "tmp_index_ovr_map");
-	RET_ERR(!map, "find tmp_index_ovr_map\n", "!map");
-	tmp_index_ovr_map = bpf_map__fd(map);
-	RET_ERR(tmp_index_ovr_map == -1, "get tmp_index_ovr_map fd",
-		"tmp_index_ovr_map:%d\n", tmp_index_ovr_map);
-
-	map = bpf_object__find_map_by_name(obj, "linum_map");
-	RET_ERR(!map, "find linum_map", "!map\n");
-	linum_map = bpf_map__fd(map);
-	RET_ERR(linum_map == -1, "get linum_map fd",
-		"linum_map:%d\n", linum_map);
-
-	map = bpf_object__find_map_by_name(obj, "data_check_map");
-	RET_ERR(!map, "find data_check_map", "!map\n");
-	data_check_map = bpf_map__fd(map);
-	RET_ERR(data_check_map == -1, "get data_check_map fd",
-		"data_check_map:%d\n", data_check_map);
-
-	return 0;
-}
-
-static void sa46_init_loopback(union sa46 *sa, sa_family_t family)
-{
-	memset(sa, 0, sizeof(*sa));
-	sa->family = family;
-	if (sa->family == AF_INET6)
-		sa->v6.sin6_addr = in6addr_loopback;
-	else
-		sa->v4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
-}
-
-static void sa46_init_inany(union sa46 *sa, sa_family_t family)
-{
-	memset(sa, 0, sizeof(*sa));
-	sa->family = family;
-	if (sa->family == AF_INET6)
-		sa->v6.sin6_addr = in6addr_any;
-	else
-		sa->v4.sin_addr.s_addr = INADDR_ANY;
-}
-
-static int read_int_sysctl(const char *sysctl)
-{
-	char buf[16];
-	int fd, ret;
-
-	fd = open(sysctl, 0);
-	RET_ERR(fd == -1, "open(sysctl)",
-		"sysctl:%s fd:%d errno:%d\n", sysctl, fd, errno);
-
-	ret = read(fd, buf, sizeof(buf));
-	RET_ERR(ret <= 0, "read(sysctl)",
-		"sysctl:%s ret:%d errno:%d\n", sysctl, ret, errno);
-
-	close(fd);
-	return atoi(buf);
-}
-
-static int write_int_sysctl(const char *sysctl, int v)
-{
-	int fd, ret, size;
-	char buf[16];
-
-	fd = open(sysctl, O_RDWR);
-	RET_ERR(fd == -1, "open(sysctl)",
-		"sysctl:%s fd:%d errno:%d\n", sysctl, fd, errno);
-
-	size = snprintf(buf, sizeof(buf), "%d", v);
-	ret = write(fd, buf, size);
-	RET_ERR(ret != size, "write(sysctl)",
-		"sysctl:%s ret:%d size:%d errno:%d\n",
-		sysctl, ret, size, errno);
-
-	close(fd);
-	return 0;
-}
-
-static void restore_sysctls(void)
-{
-	write_int_sysctl(TCP_FO_SYSCTL, saved_tcp_fo);
-	write_int_sysctl(TCP_SYNCOOKIE_SYSCTL, saved_tcp_syncookie);
-}
-
-static int enable_fastopen(void)
-{
-	int fo;
-
-	fo = read_int_sysctl(TCP_FO_SYSCTL);
-	if (fo < 0)
-		return -1;
-
-	return write_int_sysctl(TCP_FO_SYSCTL, fo | 7);
-}
-
-static int enable_syncookie(void)
-{
-	return write_int_sysctl(TCP_SYNCOOKIE_SYSCTL, 2);
-}
-
-static int disable_syncookie(void)
-{
-	return write_int_sysctl(TCP_SYNCOOKIE_SYSCTL, 0);
-}
-
-static __u32 get_linum(void)
-{
-	__u32 linum;
-	int err;
-
-	err = bpf_map_lookup_elem(linum_map, &index_zero, &linum);
-	CHECK(err == -1, "lookup_elem(linum_map)", "err:%d errno:%d\n",
-	      err, errno);
-
-	return linum;
-}
-
-static void check_data(int type, sa_family_t family, const struct cmd *cmd,
-		       int cli_fd)
-{
-	struct data_check expected = {}, result;
-	union sa46 cli_sa;
-	socklen_t addrlen;
-	int err;
-
-	addrlen = sizeof(cli_sa);
-	err = getsockname(cli_fd, (struct sockaddr *)&cli_sa,
-			  &addrlen);
-	CHECK(err == -1, "getsockname(cli_fd)", "err:%d errno:%d\n",
-	      err, errno);
-
-	err = bpf_map_lookup_elem(data_check_map, &index_zero, &result);
-	CHECK(err == -1, "lookup_elem(data_check_map)", "err:%d errno:%d\n",
-	      err, errno);
-
-	if (type == SOCK_STREAM) {
-		expected.len = MIN_TCPHDR_LEN;
-		expected.ip_protocol = IPPROTO_TCP;
-	} else {
-		expected.len = UDPHDR_LEN;
-		expected.ip_protocol = IPPROTO_UDP;
-	}
-
-	if (family == AF_INET6) {
-		expected.eth_protocol = htons(ETH_P_IPV6);
-		expected.bind_inany = !srv_sa.v6.sin6_addr.s6_addr32[3] &&
-			!srv_sa.v6.sin6_addr.s6_addr32[2] &&
-			!srv_sa.v6.sin6_addr.s6_addr32[1] &&
-			!srv_sa.v6.sin6_addr.s6_addr32[0];
-
-		memcpy(&expected.skb_addrs[0], cli_sa.v6.sin6_addr.s6_addr32,
-		       sizeof(cli_sa.v6.sin6_addr));
-		memcpy(&expected.skb_addrs[4], &in6addr_loopback,
-		       sizeof(in6addr_loopback));
-		expected.skb_ports[0] = cli_sa.v6.sin6_port;
-		expected.skb_ports[1] = srv_sa.v6.sin6_port;
-	} else {
-		expected.eth_protocol = htons(ETH_P_IP);
-		expected.bind_inany = !srv_sa.v4.sin_addr.s_addr;
-
-		expected.skb_addrs[0] = cli_sa.v4.sin_addr.s_addr;
-		expected.skb_addrs[1] = htonl(INADDR_LOOPBACK);
-		expected.skb_ports[0] = cli_sa.v4.sin_port;
-		expected.skb_ports[1] = srv_sa.v4.sin_port;
-	}
-
-	if (memcmp(&result, &expected, offsetof(struct data_check,
-						equal_check_end))) {
-		printf("unexpected data_check\n");
-		printf("  result: (0x%x, %u, %u)\n",
-		       result.eth_protocol, result.ip_protocol,
-		       result.bind_inany);
-		printf("expected: (0x%x, %u, %u)\n",
-		       expected.eth_protocol, expected.ip_protocol,
-		       expected.bind_inany);
-		CHECK(1, "data_check result != expected",
-		      "bpf_prog_linum:%u\n", get_linum());
-	}
-
-	CHECK(!result.hash, "data_check result.hash empty",
-	      "result.hash:%u", result.hash);
-
-	expected.len += cmd ? sizeof(*cmd) : 0;
-	if (type == SOCK_STREAM)
-		CHECK(expected.len > result.len, "expected.len > result.len",
-		      "expected.len:%u result.len:%u bpf_prog_linum:%u\n",
-		      expected.len, result.len, get_linum());
-	else
-		CHECK(expected.len != result.len, "expected.len != result.len",
-		      "expected.len:%u result.len:%u bpf_prog_linum:%u\n",
-		      expected.len, result.len, get_linum());
-}
-
-static void check_results(void)
-{
-	__u32 results[NR_RESULTS];
-	__u32 i, broken = 0;
-	int err;
-
-	for (i = 0; i < NR_RESULTS; i++) {
-		err = bpf_map_lookup_elem(result_map, &i, &results[i]);
-		CHECK(err == -1, "lookup_elem(result_map)",
-		      "i:%u err:%d errno:%d\n", i, err, errno);
-	}
-
-	for (i = 0; i < NR_RESULTS; i++) {
-		if (results[i] != expected_results[i]) {
-			broken = i;
-			break;
-		}
-	}
-
-	if (i == NR_RESULTS)
-		return;
-
-	printf("unexpected result\n");
-	printf(" result: [");
-	printf("%u", results[0]);
-	for (i = 1; i < NR_RESULTS; i++)
-		printf(", %u", results[i]);
-	printf("]\n");
-
-	printf("expected: [");
-	printf("%u", expected_results[0]);
-	for (i = 1; i < NR_RESULTS; i++)
-		printf(", %u", expected_results[i]);
-	printf("]\n");
-
-	CHECK(expected_results[broken] != results[broken],
-	      "unexpected result",
-	      "expected_results[%u] != results[%u] bpf_prog_linum:%u\n",
-	      broken, broken, get_linum());
-}
-
-static int send_data(int type, sa_family_t family, void *data, size_t len,
-		     enum result expected)
-{
-	union sa46 cli_sa;
-	int fd, err;
-
-	fd = socket(family, type, 0);
-	CHECK(fd == -1, "socket()", "fd:%d errno:%d\n", fd, errno);
-
-	sa46_init_loopback(&cli_sa, family);
-	err = bind(fd, (struct sockaddr *)&cli_sa, sizeof(cli_sa));
-	CHECK(fd == -1, "bind(cli_sa)", "err:%d errno:%d\n", err, errno);
-
-	err = sendto(fd, data, len, MSG_FASTOPEN, (struct sockaddr *)&srv_sa,
-		     sizeof(srv_sa));
-	CHECK(err != len && expected >= PASS,
-	      "sendto()", "family:%u err:%d errno:%d expected:%d\n",
-	      family, err, errno, expected);
-
-	return fd;
-}
-
-static void do_test(int type, sa_family_t family, struct cmd *cmd,
-		    enum result expected)
-{
-	int nev, srv_fd, cli_fd;
-	struct epoll_event ev;
-	struct cmd rcv_cmd;
-	ssize_t nread;
-
-	cli_fd = send_data(type, family, cmd, cmd ? sizeof(*cmd) : 0,
-			   expected);
-	nev = epoll_wait(epfd, &ev, 1, expected >= PASS ? 5 : 0);
-	CHECK((nev <= 0 && expected >= PASS) ||
-	      (nev > 0 && expected < PASS),
-	      "nev <> expected",
-	      "nev:%d expected:%d type:%d family:%d data:(%d, %d)\n",
-	      nev, expected, type, family,
-	      cmd ? cmd->reuseport_index : -1,
-	      cmd ? cmd->pass_on_failure : -1);
-	check_results();
-	check_data(type, family, cmd, cli_fd);
-
-	if (expected < PASS)
-		return;
-
-	CHECK(expected != PASS_ERR_SK_SELECT_REUSEPORT &&
-	      cmd->reuseport_index != ev.data.u32,
-	      "check cmd->reuseport_index",
-	      "cmd:(%u, %u) ev.data.u32:%u\n",
-	      cmd->pass_on_failure, cmd->reuseport_index, ev.data.u32);
-
-	srv_fd = sk_fds[ev.data.u32];
-	if (type == SOCK_STREAM) {
-		int new_fd = accept(srv_fd, NULL, 0);
-
-		CHECK(new_fd == -1, "accept(srv_fd)",
-		      "ev.data.u32:%u new_fd:%d errno:%d\n",
-		      ev.data.u32, new_fd, errno);
-
-		nread = recv(new_fd, &rcv_cmd, sizeof(rcv_cmd), MSG_DONTWAIT);
-		CHECK(nread != sizeof(rcv_cmd),
-		      "recv(new_fd)",
-		      "ev.data.u32:%u nread:%zd sizeof(rcv_cmd):%zu errno:%d\n",
-		      ev.data.u32, nread, sizeof(rcv_cmd), errno);
-
-		close(new_fd);
-	} else {
-		nread = recv(srv_fd, &rcv_cmd, sizeof(rcv_cmd), MSG_DONTWAIT);
-		CHECK(nread != sizeof(rcv_cmd),
-		      "recv(sk_fds)",
-		      "ev.data.u32:%u nread:%zd sizeof(rcv_cmd):%zu errno:%d\n",
-		      ev.data.u32, nread, sizeof(rcv_cmd), errno);
-	}
-
-	close(cli_fd);
-}
-
-static void test_err_inner_map(int type, sa_family_t family)
-{
-	struct cmd cmd = {
-		.reuseport_index = 0,
-		.pass_on_failure = 0,
-	};
-
-	expected_results[DROP_ERR_INNER_MAP]++;
-	do_test(type, family, &cmd, DROP_ERR_INNER_MAP);
-	printf("OK\n");
-}
-
-static void test_err_skb_data(int type, sa_family_t family)
-{
-	expected_results[DROP_ERR_SKB_DATA]++;
-	do_test(type, family, NULL, DROP_ERR_SKB_DATA);
-	printf("OK\n");
-}
-
-static void test_err_sk_select_port(int type, sa_family_t family)
-{
-	struct cmd cmd = {
-		.reuseport_index = REUSEPORT_ARRAY_SIZE,
-		.pass_on_failure = 0,
-	};
-
-	expected_results[DROP_ERR_SK_SELECT_REUSEPORT]++;
-	do_test(type, family, &cmd, DROP_ERR_SK_SELECT_REUSEPORT);
-	printf("OK\n");
-}
-
-static void test_pass(int type, sa_family_t family)
-{
-	struct cmd cmd;
-	int i;
-
-	cmd.pass_on_failure = 0;
-	for (i = 0; i < REUSEPORT_ARRAY_SIZE; i++) {
-		expected_results[PASS]++;
-		cmd.reuseport_index = i;
-		do_test(type, family, &cmd, PASS);
-	}
-	printf("OK\n");
-}
-
-static void test_syncookie(int type, sa_family_t family)
-{
-	int err, tmp_index = 1;
-	struct cmd cmd = {
-		.reuseport_index = 0,
-		.pass_on_failure = 0,
-	};
-
-	if (type != SOCK_STREAM)
-		return;
-
-	/*
-	 * +1 for TCP-SYN and
-	 * +1 for the TCP-ACK (ack the syncookie)
-	 */
-	expected_results[PASS] += 2;
-	enable_syncookie();
-	/*
-	 * Simulate TCP-SYN and TCP-ACK are handled by two different sk:
-	 * TCP-SYN: select sk_fds[tmp_index = 1] tmp_index is from the
-	 *          tmp_index_ovr_map
-	 * TCP-ACK: select sk_fds[reuseport_index = 0] reuseport_index
-	 *          is from the cmd.reuseport_index
-	 */
-	err = bpf_map_update_elem(tmp_index_ovr_map, &index_zero,
-				  &tmp_index, BPF_ANY);
-	CHECK(err == -1, "update_elem(tmp_index_ovr_map, 0, 1)",
-	      "err:%d errno:%d\n", err, errno);
-	do_test(type, family, &cmd, PASS);
-	err = bpf_map_lookup_elem(tmp_index_ovr_map, &index_zero,
-				  &tmp_index);
-	CHECK(err == -1 || tmp_index != -1,
-	      "lookup_elem(tmp_index_ovr_map)",
-	      "err:%d errno:%d tmp_index:%d\n",
-	      err, errno, tmp_index);
-	disable_syncookie();
-	printf("OK\n");
-}
-
-static void test_pass_on_err(int type, sa_family_t family)
-{
-	struct cmd cmd = {
-		.reuseport_index = REUSEPORT_ARRAY_SIZE,
-		.pass_on_failure = 1,
-	};
-
-	expected_results[PASS_ERR_SK_SELECT_REUSEPORT] += 1;
-	do_test(type, family, &cmd, PASS_ERR_SK_SELECT_REUSEPORT);
-	printf("OK\n");
-}
-
-static void test_detach_bpf(int type, sa_family_t family)
-{
-#ifdef SO_DETACH_REUSEPORT_BPF
-	__u32 nr_run_before = 0, nr_run_after = 0, tmp, i;
-	struct epoll_event ev;
-	int cli_fd, err, nev;
-	struct cmd cmd = {};
-	int optvalue = 0;
-
-	err = setsockopt(sk_fds[0], SOL_SOCKET, SO_DETACH_REUSEPORT_BPF,
-			 &optvalue, sizeof(optvalue));
-	CHECK(err == -1, "setsockopt(SO_DETACH_REUSEPORT_BPF)",
-	      "err:%d errno:%d\n", err, errno);
-
-	err = setsockopt(sk_fds[1], SOL_SOCKET, SO_DETACH_REUSEPORT_BPF,
-			 &optvalue, sizeof(optvalue));
-	CHECK(err == 0 || errno != ENOENT, "setsockopt(SO_DETACH_REUSEPORT_BPF)",
-	      "err:%d errno:%d\n", err, errno);
-
-	for (i = 0; i < NR_RESULTS; i++) {
-		err = bpf_map_lookup_elem(result_map, &i, &tmp);
-		CHECK(err == -1, "lookup_elem(result_map)",
-		      "i:%u err:%d errno:%d\n", i, err, errno);
-		nr_run_before += tmp;
-	}
-
-	cli_fd = send_data(type, family, &cmd, sizeof(cmd), PASS);
-	nev = epoll_wait(epfd, &ev, 1, 5);
-	CHECK(nev <= 0, "nev <= 0",
-	      "nev:%d expected:1 type:%d family:%d data:(0, 0)\n",
-	      nev,  type, family);
-
-	for (i = 0; i < NR_RESULTS; i++) {
-		err = bpf_map_lookup_elem(result_map, &i, &tmp);
-		CHECK(err == -1, "lookup_elem(result_map)",
-		      "i:%u err:%d errno:%d\n", i, err, errno);
-		nr_run_after += tmp;
-	}
-
-	CHECK(nr_run_before != nr_run_after,
-	      "nr_run_before != nr_run_after",
-	      "nr_run_before:%u nr_run_after:%u\n",
-	      nr_run_before, nr_run_after);
-
-	printf("OK\n");
-	close(cli_fd);
-#else
-	printf("SKIP\n");
-#endif
-}
-
-static void prepare_sk_fds(int type, sa_family_t family, bool inany)
-{
-	const int first = REUSEPORT_ARRAY_SIZE - 1;
-	int i, err, optval = 1;
-	struct epoll_event ev;
-	socklen_t addrlen;
-
-	if (inany)
-		sa46_init_inany(&srv_sa, family);
-	else
-		sa46_init_loopback(&srv_sa, family);
-	addrlen = sizeof(srv_sa);
-
-	/*
-	 * The sk_fds[] is filled from the back such that the order
-	 * is exactly opposite to the (struct sock_reuseport *)reuse->socks[].
-	 */
-	for (i = first; i >= 0; i--) {
-		sk_fds[i] = socket(family, type, 0);
-		CHECK(sk_fds[i] == -1, "socket()", "sk_fds[%d]:%d errno:%d\n",
-		      i, sk_fds[i], errno);
-		err = setsockopt(sk_fds[i], SOL_SOCKET, SO_REUSEPORT,
-				 &optval, sizeof(optval));
-		CHECK(err == -1, "setsockopt(SO_REUSEPORT)",
-		      "sk_fds[%d] err:%d errno:%d\n",
-		      i, err, errno);
-
-		if (i == first) {
-			err = setsockopt(sk_fds[i], SOL_SOCKET,
-					 SO_ATTACH_REUSEPORT_EBPF,
-					 &select_by_skb_data_prog,
-					 sizeof(select_by_skb_data_prog));
-			CHECK(err == -1, "setsockopt(SO_ATTACH_REUEPORT_EBPF)",
-			      "err:%d errno:%d\n", err, errno);
-		}
-
-		err = bind(sk_fds[i], (struct sockaddr *)&srv_sa, addrlen);
-		CHECK(err == -1, "bind()", "sk_fds[%d] err:%d errno:%d\n",
-		      i, err, errno);
-
-		if (type == SOCK_STREAM) {
-			err = listen(sk_fds[i], 10);
-			CHECK(err == -1, "listen()",
-			      "sk_fds[%d] err:%d errno:%d\n",
-			      i, err, errno);
-		}
-
-		err = bpf_map_update_elem(reuseport_array, &i, &sk_fds[i],
-					  BPF_NOEXIST);
-		CHECK(err == -1, "update_elem(reuseport_array)",
-		      "sk_fds[%d] err:%d errno:%d\n", i, err, errno);
-
-		if (i == first) {
-			socklen_t addrlen = sizeof(srv_sa);
-
-			err = getsockname(sk_fds[i], (struct sockaddr *)&srv_sa,
-					  &addrlen);
-			CHECK(err == -1, "getsockname()",
-			      "sk_fds[%d] err:%d errno:%d\n", i, err, errno);
-		}
-	}
-
-	epfd = epoll_create(1);
-	CHECK(epfd == -1, "epoll_create(1)",
-	      "epfd:%d errno:%d\n", epfd, errno);
-
-	ev.events = EPOLLIN;
-	for (i = 0; i < REUSEPORT_ARRAY_SIZE; i++) {
-		ev.data.u32 = i;
-		err = epoll_ctl(epfd, EPOLL_CTL_ADD, sk_fds[i], &ev);
-		CHECK(err, "epoll_ctl(EPOLL_CTL_ADD)", "sk_fds[%d]\n", i);
-	}
-}
-
-static void setup_per_test(int type, sa_family_t family, bool inany,
-			   bool no_inner_map)
-{
-	int ovr = -1, err;
-
-	prepare_sk_fds(type, family, inany);
-	err = bpf_map_update_elem(tmp_index_ovr_map, &index_zero, &ovr,
-				  BPF_ANY);
-	CHECK(err == -1, "update_elem(tmp_index_ovr_map, 0, -1)",
-	      "err:%d errno:%d\n", err, errno);
-
-	/* Install reuseport_array to outer_map? */
-	if (no_inner_map)
-		return;
-
-	err = bpf_map_update_elem(outer_map, &index_zero, &reuseport_array,
-				  BPF_ANY);
-	CHECK(err == -1, "update_elem(outer_map, 0, reuseport_array)",
-	      "err:%d errno:%d\n", err, errno);
-}
-
-static void cleanup_per_test(bool no_inner_map)
-{
-	int i, err;
-
-	for (i = 0; i < REUSEPORT_ARRAY_SIZE; i++)
-		close(sk_fds[i]);
-	close(epfd);
-
-	/* Delete reuseport_array from outer_map? */
-	if (no_inner_map)
-		return;
-
-	err = bpf_map_delete_elem(outer_map, &index_zero);
-	CHECK(err == -1, "delete_elem(outer_map)",
-	      "err:%d errno:%d\n", err, errno);
-}
-
-static void cleanup(void)
-{
-	if (outer_map != -1)
-		close(outer_map);
-	if (reuseport_array != -1)
-		close(reuseport_array);
-	if (obj)
-		bpf_object__close(obj);
-}
-
-static const char *family_str(sa_family_t family)
-{
-	switch (family) {
-	case AF_INET:
-		return "IPv4";
-	case AF_INET6:
-		return "IPv6";
-	default:
-		return "unknown";
-	}
-}
-
-static const char *sotype_str(int sotype)
-{
-	switch (sotype) {
-	case SOCK_STREAM:
-		return "TCP";
-	case SOCK_DGRAM:
-		return "UDP";
-	default:
-		return "unknown";
-	}
-}
-
-#define TEST_INIT(fn, ...) { fn, #fn, __VA_ARGS__ }
-
-static void test_config(int type, sa_family_t family, bool inany)
-{
-	const struct test {
-		void (*fn)(int sotype, sa_family_t family);
-		const char *name;
-		bool no_inner_map;
-	} tests[] = {
-		TEST_INIT(test_err_inner_map, true /* no_inner_map */),
-		TEST_INIT(test_err_skb_data),
-		TEST_INIT(test_err_sk_select_port),
-		TEST_INIT(test_pass),
-		TEST_INIT(test_syncookie),
-		TEST_INIT(test_pass_on_err),
-		TEST_INIT(test_detach_bpf),
-	};
-	const struct test *t;
-
-	printf("######## %s/%s %s ########\n",
-	       family_str(family), sotype_str(type),
-	       inany ? " INANY  " : "LOOPBACK");
-
-	for (t = tests; t < tests + ARRAY_SIZE(tests); t++) {
-		setup_per_test(type, family, inany, t->no_inner_map);
-		printf("%s: ", t->name);
-		t->fn(type, family);
-		cleanup_per_test(t->no_inner_map);
-	}
-
-	printf("\n");
-}
-
-#define BIND_INANY true
-
-static void test_all(void)
-{
-	const struct config {
-		int sotype;
-		sa_family_t family;
-		bool inany;
-	} configs[] = {
-		{ SOCK_STREAM, AF_INET },
-		{ SOCK_STREAM, AF_INET, BIND_INANY },
-		{ SOCK_STREAM, AF_INET6 },
-		{ SOCK_STREAM, AF_INET6, BIND_INANY },
-		{ SOCK_DGRAM, AF_INET },
-		{ SOCK_DGRAM, AF_INET6 },
-	};
-	const struct config *c;
-
-	for (c = configs; c < configs + ARRAY_SIZE(configs); c++)
-		test_config(c->sotype, c->family, c->inany);
-}
-
-int main(int argc, const char **argv)
-{
-	int ret = EXIT_FAILURE;
-
-	if (create_maps())
-		goto out;
-	if (prepare_bpf_obj())
-		goto out;
-
-	saved_tcp_fo = read_int_sysctl(TCP_FO_SYSCTL);
-	saved_tcp_syncookie = read_int_sysctl(TCP_SYNCOOKIE_SYSCTL);
-	if (saved_tcp_syncookie < 0 || saved_tcp_syncookie < 0)
-		goto out;
-	atexit(restore_sysctls);
-
-	if (enable_fastopen())
-		goto out;
-	if (disable_syncookie())
-		goto out;
-
-	test_all();
-
-	ret = EXIT_SUCCESS;
-out:
-	cleanup();
-	return ret;
-}