// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020 Cloudflare
#include <error.h>
#include <linux/tcp.h>
#include <linux/socket.h>
#include <sys/epoll.h>

#include "test_progs.h"
#include "test_skmsg_load_helpers.skel.h"
#include "test_sockmap_update.skel.h"
#include "test_sockmap_invalid_update.skel.h"
#include "test_sockmap_skb_verdict_attach.skel.h"
#include "test_sockmap_progs_query.skel.h"
#include "test_sockmap_pass_prog.skel.h"
#include "test_sockmap_drop_prog.skel.h"
#include "test_sockmap_change_tail.skel.h"
#include "bpf_iter_sockmap.skel.h"

#include "sockmap_helpers.h"

#define TCP_REPAIR              19      /* TCP sock is under repair right now */

#define TCP_REPAIR_ON           1
#define TCP_REPAIR_OFF_NO_WP    -1      /* Turn off without window probes */

/**
 * SOL_TCP is defined in <netinet/tcp.h> (glibc), but the copybuf_address
 * field of tcp_zerocopy_receive is not yet included in older versions.
 * This workaround remains necessary until the glibc update propagates.
 */
#ifndef SOL_TCP
#define SOL_TCP 6
#endif

static int connected_socket_v4(void)
{
        struct sockaddr_in addr = {
                .sin_family = AF_INET,
                .sin_port = htons(80),
                .sin_addr = { inet_addr("127.0.0.1") },
        };
        socklen_t len = sizeof(addr);
        int s, repair, err;

        s = socket(AF_INET, SOCK_STREAM, 0);
        if (!ASSERT_GE(s, 0, "socket"))
                goto error;

        repair = TCP_REPAIR_ON;
        err = setsockopt(s, SOL_TCP, TCP_REPAIR, &repair, sizeof(repair));
        if (!ASSERT_OK(err, "setsockopt(TCP_REPAIR)"))
                goto error;

        err = connect(s, (struct sockaddr *)&addr, len);
        if (!ASSERT_OK(err, "connect"))
                goto error;

        repair = TCP_REPAIR_OFF_NO_WP;
        err = setsockopt(s, SOL_TCP, TCP_REPAIR, &repair, sizeof(repair));
        if (!ASSERT_OK(err, "setsockopt(TCP_REPAIR)"))
                goto error;

        return s;
error:
        perror(__func__);
        close(s);
        return -1;
}

static void compare_cookies(struct bpf_map *src, struct bpf_map *dst)
{
        __u32 i, max_entries = bpf_map__max_entries(src);
        int err, src_fd, dst_fd;

        src_fd = bpf_map__fd(src);
        dst_fd = bpf_map__fd(dst);

        for (i = 0; i < max_entries; i++) {
                __u64 src_cookie, dst_cookie;

                err = bpf_map_lookup_elem(src_fd, &i, &src_cookie);
                if (err && errno == ENOENT) {
                        err = bpf_map_lookup_elem(dst_fd, &i, &dst_cookie);
                        ASSERT_ERR(err, "map_lookup_elem(dst)");
                        ASSERT_EQ(errno, ENOENT, "map_lookup_elem(dst)");
                        continue;
                }
                if (!ASSERT_OK(err, "lookup_elem(src)"))
                        continue;

                err = bpf_map_lookup_elem(dst_fd, &i, &dst_cookie);
                if (!ASSERT_OK(err, "lookup_elem(dst)"))
                        continue;

                ASSERT_EQ(dst_cookie, src_cookie, "cookie mismatch");
        }
}

/* Create a map, populate it with one socket, and free the map. */
static void test_sockmap_create_update_free(enum bpf_map_type map_type)
{
        const int zero = 0;
        int s, map, err;

        s = connected_socket_v4();
        if (!ASSERT_GE(s, 0, "connected_socket_v4"))
                return;

        map = bpf_map_create(map_type, NULL, sizeof(int), sizeof(int), 1, NULL);
        if (!ASSERT_GE(map, 0, "bpf_map_create"))
                goto out;

        err = bpf_map_update_elem(map, &zero, &s, BPF_NOEXIST);
        if (!ASSERT_OK(err, "bpf_map_update"))
                goto out;

out:
        close(map);
        close(s);
}

static void test_sockmap_vsock_delete_on_close(void)
{
        int map, c, p, err, zero = 0;

        map = bpf_map_create(BPF_MAP_TYPE_SOCKMAP, NULL, sizeof(int),
                             sizeof(int), 1, NULL);
        if (!ASSERT_OK_FD(map, "bpf_map_create"))
                return;

        err = create_pair(AF_VSOCK, SOCK_STREAM, &c, &p);
        if (!ASSERT_OK(err, "create_pair"))
                goto close_map;

        if (xbpf_map_update_elem(map, &zero, &c, BPF_NOEXIST))
                goto close_socks;

        xclose(c);
        xclose(p);

        err = create_pair(AF_VSOCK, SOCK_STREAM, &c, &p);
        if (!ASSERT_OK(err, "create_pair"))
                goto close_map;

        err = bpf_map_update_elem(map, &zero, &c, BPF_NOEXIST);
        ASSERT_OK(err, "after close(), bpf_map_update");

close_socks:
        xclose(c);
        xclose(p);
close_map:
        xclose(map);
}

static void test_skmsg_helpers(enum bpf_map_type map_type)
{
        struct test_skmsg_load_helpers *skel;
        int err, map, verdict;

        skel = test_skmsg_load_helpers__open_and_load();
        if (!ASSERT_OK_PTR(skel, "test_skmsg_load_helpers__open_and_load"))
                return;

        verdict = bpf_program__fd(skel->progs.prog_msg_verdict);
        map = bpf_map__fd(skel->maps.sock_map);

        err = bpf_prog_attach(verdict, map, BPF_SK_MSG_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;

        err = bpf_prog_detach2(verdict, map, BPF_SK_MSG_VERDICT);
        if (!ASSERT_OK(err, "bpf_prog_detach2"))
                goto out;
out:
        test_skmsg_load_helpers__destroy(skel);
}

static void test_skmsg_helpers_with_link(enum bpf_map_type map_type)
{
        struct bpf_program *prog, *prog_clone, *prog_clone2;
        DECLARE_LIBBPF_OPTS(bpf_link_update_opts, opts);
        struct test_skmsg_load_helpers *skel;
        struct bpf_link *link, *link2;
        int err, map;

        skel = test_skmsg_load_helpers__open_and_load();
        if (!ASSERT_OK_PTR(skel, "test_skmsg_load_helpers__open_and_load"))
                return;

        prog = skel->progs.prog_msg_verdict;
        prog_clone = skel->progs.prog_msg_verdict_clone;
        prog_clone2 = skel->progs.prog_msg_verdict_clone2;
        map = bpf_map__fd(skel->maps.sock_map);

        link = bpf_program__attach_sockmap(prog, map);
        if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
                goto out;

        /* Fail since bpf_link for the same prog has been created. */
        err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_MSG_VERDICT, 0);
        if (!ASSERT_ERR(err, "bpf_prog_attach"))
                goto out;

        /* Fail since bpf_link for the same prog type has been created. */
        link2 = bpf_program__attach_sockmap(prog_clone, map);
        if (!ASSERT_ERR_PTR(link2, "bpf_program__attach_sockmap")) {
                bpf_link__destroy(link2);
                goto out;
        }

        err = bpf_link__update_program(link, prog_clone);
        if (!ASSERT_OK(err, "bpf_link__update_program"))
                goto out;

        /* Fail since a prog with different type attempts to do update. */
        err = bpf_link__update_program(link, skel->progs.prog_skb_verdict);
        if (!ASSERT_ERR(err, "bpf_link__update_program"))
                goto out;

        /* Fail since the old prog does not match the one in the kernel. */
        opts.old_prog_fd = bpf_program__fd(prog_clone2);
        opts.flags = BPF_F_REPLACE;
        err = bpf_link_update(bpf_link__fd(link), bpf_program__fd(prog), &opts);
        if (!ASSERT_ERR(err, "bpf_link_update"))
                goto out;

        opts.old_prog_fd = bpf_program__fd(prog_clone);
        opts.flags = BPF_F_REPLACE;
        err = bpf_link_update(bpf_link__fd(link), bpf_program__fd(prog), &opts);
        if (!ASSERT_OK(err, "bpf_link_update"))
                goto out;
out:
        bpf_link__destroy(link);
        test_skmsg_load_helpers__destroy(skel);
}

static void test_sockmap_update(enum bpf_map_type map_type)
{
        int err, prog, src;
        struct test_sockmap_update *skel;
        struct bpf_map *dst_map;
        const __u32 zero = 0;
        char dummy[14] = {0};
        LIBBPF_OPTS(bpf_test_run_opts, topts,
                .data_in = dummy,
                .data_size_in = sizeof(dummy),
                .repeat = 1,
        );
        __s64 sk;

        sk = connected_socket_v4();
        if (!ASSERT_NEQ(sk, -1, "connected_socket_v4"))
                return;

        skel = test_sockmap_update__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                goto close_sk;

        prog = bpf_program__fd(skel->progs.copy_sock_map);
        src = bpf_map__fd(skel->maps.src);
        if (map_type == BPF_MAP_TYPE_SOCKMAP)
                dst_map = skel->maps.dst_sock_map;
        else
                dst_map = skel->maps.dst_sock_hash;

        err = bpf_map_update_elem(src, &zero, &sk, BPF_NOEXIST);
        if (!ASSERT_OK(err, "update_elem(src)"))
                goto out;

        err = bpf_prog_test_run_opts(prog, &topts);
        if (!ASSERT_OK(err, "test_run"))
                goto out;
        if (!ASSERT_NEQ(topts.retval, 0, "test_run retval"))
                goto out;

        compare_cookies(skel->maps.src, dst_map);

out:
        test_sockmap_update__destroy(skel);
close_sk:
        close(sk);
}

static void test_sockmap_invalid_update(void)
{
        struct test_sockmap_invalid_update *skel;

        skel = test_sockmap_invalid_update__open_and_load();
        if (!ASSERT_NULL(skel, "open_and_load"))
                test_sockmap_invalid_update__destroy(skel);
}

static void test_sockmap_copy(enum bpf_map_type map_type)
{
        DECLARE_LIBBPF_OPTS(bpf_iter_attach_opts, opts);
        int err, len, src_fd, iter_fd;
        union bpf_iter_link_info linfo = {};
        __u32 i, num_sockets, num_elems;
        struct bpf_iter_sockmap *skel;
        __s64 *sock_fd = NULL;
        struct bpf_link *link;
        struct bpf_map *src;
        char buf[64];

        skel = bpf_iter_sockmap__open_and_load();
        if (!ASSERT_OK_PTR(skel, "bpf_iter_sockmap__open_and_load"))
                return;

        if (map_type == BPF_MAP_TYPE_SOCKMAP) {
                src = skel->maps.sockmap;
                num_elems = bpf_map__max_entries(src);
                num_sockets = num_elems - 1;
        } else {
                src = skel->maps.sockhash;
                num_elems = bpf_map__max_entries(src) - 1;
                num_sockets = num_elems;
        }

        sock_fd = calloc(num_sockets, sizeof(*sock_fd));
        if (!ASSERT_OK_PTR(sock_fd, "calloc(sock_fd)"))
                goto out;

        for (i = 0; i < num_sockets; i++)
                sock_fd[i] = -1;

        src_fd = bpf_map__fd(src);

        for (i = 0; i < num_sockets; i++) {
                sock_fd[i] = connected_socket_v4();
                if (!ASSERT_NEQ(sock_fd[i], -1, "connected_socket_v4"))
                        goto out;

                err = bpf_map_update_elem(src_fd, &i, &sock_fd[i], BPF_NOEXIST);
                if (!ASSERT_OK(err, "map_update"))
                        goto out;
        }

        linfo.map.map_fd = src_fd;
        opts.link_info = &linfo;
        opts.link_info_len = sizeof(linfo);
        link = bpf_program__attach_iter(skel->progs.copy, &opts);
        if (!ASSERT_OK_PTR(link, "attach_iter"))
                goto out;

        iter_fd = bpf_iter_create(bpf_link__fd(link));
        if (!ASSERT_GE(iter_fd, 0, "create_iter"))
                goto free_link;

        /* do some tests */
        while ((len = read(iter_fd, buf, sizeof(buf))) > 0)
                ;
        if (!ASSERT_GE(len, 0, "read"))
                goto close_iter;

        /* test results */
        if (!ASSERT_EQ(skel->bss->elems, num_elems, "elems"))
                goto close_iter;

        if (!ASSERT_EQ(skel->bss->socks, num_sockets, "socks"))
                goto close_iter;

        compare_cookies(src, skel->maps.dst);

close_iter:
        close(iter_fd);
free_link:
        bpf_link__destroy(link);
out:
        for (i = 0; sock_fd && i < num_sockets; i++)
                if (sock_fd[i] >= 0)
                        close(sock_fd[i]);
        if (sock_fd)
                free(sock_fd);
        bpf_iter_sockmap__destroy(skel);
}

static void test_sockmap_skb_verdict_attach(enum bpf_attach_type first,
                                            enum bpf_attach_type second)
{
        struct test_sockmap_skb_verdict_attach *skel;
        int err, map, verdict;

        skel = test_sockmap_skb_verdict_attach__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
        map = bpf_map__fd(skel->maps.sock_map);

        err = bpf_prog_attach(verdict, map, first, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;

        err = bpf_prog_attach(verdict, map, second, 0);
        ASSERT_EQ(err, -EBUSY, "prog_attach_fail");

        err = bpf_prog_detach2(verdict, map, first);
        if (!ASSERT_OK(err, "bpf_prog_detach2"))
                goto out;
out:
        test_sockmap_skb_verdict_attach__destroy(skel);
}

static void test_sockmap_skb_verdict_attach_with_link(void)
{
        struct test_sockmap_skb_verdict_attach *skel;
        struct bpf_program *prog;
        struct bpf_link *link;
        int err, map;

        skel = test_sockmap_skb_verdict_attach__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;
        prog = skel->progs.prog_skb_verdict;
        map = bpf_map__fd(skel->maps.sock_map);
        link = bpf_program__attach_sockmap(prog, map);
        if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
                goto out;

        bpf_link__destroy(link);

        err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;

        /* Fail since attaching with the same prog/map has been done. */
        link = bpf_program__attach_sockmap(prog, map);
        if (!ASSERT_ERR_PTR(link, "bpf_program__attach_sockmap"))
                bpf_link__destroy(link);

        err = bpf_prog_detach2(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT);
        if (!ASSERT_OK(err, "bpf_prog_detach2"))
                goto out;
out:
        test_sockmap_skb_verdict_attach__destroy(skel);
}

static __u32 query_prog_id(int prog_fd)
{
        struct bpf_prog_info info = {};
        __u32 info_len = sizeof(info);
        int err;

        err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
        if (!ASSERT_OK(err, "bpf_prog_get_info_by_fd") ||
            !ASSERT_EQ(info_len, sizeof(info), "bpf_prog_get_info_by_fd"))
                return 0;

        return info.id;
}

static void test_sockmap_progs_query(enum bpf_attach_type attach_type)
{
        struct test_sockmap_progs_query *skel;
        int err, map_fd, verdict_fd;
        __u32 attach_flags = 0;
        __u32 prog_ids[3] = {};
        __u32 prog_cnt = 3;

        skel = test_sockmap_progs_query__open_and_load();
        if (!ASSERT_OK_PTR(skel, "test_sockmap_progs_query__open_and_load"))
                return;

        map_fd = bpf_map__fd(skel->maps.sock_map);

        if (attach_type == BPF_SK_MSG_VERDICT)
                verdict_fd = bpf_program__fd(skel->progs.prog_skmsg_verdict);
        else
                verdict_fd = bpf_program__fd(skel->progs.prog_skb_verdict);

        err = bpf_prog_query(map_fd, attach_type, 0 /* query flags */,
                             &attach_flags, prog_ids, &prog_cnt);
        ASSERT_OK(err, "bpf_prog_query failed");
        ASSERT_EQ(attach_flags,  0, "wrong attach_flags on query");
        ASSERT_EQ(prog_cnt, 0, "wrong program count on query");

        err = bpf_prog_attach(verdict_fd, map_fd, attach_type, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach failed"))
                goto out;

        prog_cnt = 1;
        err = bpf_prog_query(map_fd, attach_type, 0 /* query flags */,
                             &attach_flags, prog_ids, &prog_cnt);
        ASSERT_OK(err, "bpf_prog_query failed");
        ASSERT_EQ(attach_flags, 0, "wrong attach_flags on query");
        ASSERT_EQ(prog_cnt, 1, "wrong program count on query");
        ASSERT_EQ(prog_ids[0], query_prog_id(verdict_fd),
                  "wrong prog_ids on query");

        bpf_prog_detach2(verdict_fd, map_fd, attach_type);
out:
        test_sockmap_progs_query__destroy(skel);
}

#define MAX_EVENTS 10
static void test_sockmap_skb_verdict_shutdown(void)
{
        int n, err, map, verdict, c1 = -1, p1 = -1;
        struct epoll_event ev, events[MAX_EVENTS];
        struct test_sockmap_pass_prog *skel;
        int zero = 0;
        int epollfd;
        char b;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
        map = bpf_map__fd(skel->maps.sock_map_rx);

        err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;

        err = create_pair(AF_INET, SOCK_STREAM, &c1, &p1);
        if (err < 0)
                goto out;

        err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
        if (err < 0)
                goto out_close;

        shutdown(p1, SHUT_WR);

        ev.events = EPOLLIN;
        ev.data.fd = c1;

        epollfd = epoll_create1(0);
        if (!ASSERT_GT(epollfd, -1, "epoll_create(0)"))
                goto out_close;
        err = epoll_ctl(epollfd, EPOLL_CTL_ADD, c1, &ev);
        if (!ASSERT_OK(err, "epoll_ctl(EPOLL_CTL_ADD)"))
                goto out_close;
        err = epoll_wait(epollfd, events, MAX_EVENTS, -1);
        if (!ASSERT_EQ(err, 1, "epoll_wait(fd)"))
                goto out_close;

        n = recv(c1, &b, 1, MSG_DONTWAIT);
        ASSERT_EQ(n, 0, "recv(fin)");
out_close:
        close(c1);
        close(p1);
out:
        test_sockmap_pass_prog__destroy(skel);
}


static void do_test_sockmap_skb_verdict_fionread(int sotype, bool pass_prog)
{
        int err, map, verdict, c0 = -1, c1 = -1, p0 = -1, p1 = -1;
        int expected, zero = 0, sent, recvd, avail;
        struct test_sockmap_pass_prog *pass = NULL;
        struct test_sockmap_drop_prog *drop = NULL;
        char buf[256] = "0123456789";
        int split_len = sizeof(buf) / 2;

        if (pass_prog) {
                pass = test_sockmap_pass_prog__open_and_load();
                if (!ASSERT_OK_PTR(pass, "open_and_load"))
                        return;
                verdict = bpf_program__fd(pass->progs.prog_skb_verdict);
                map = bpf_map__fd(pass->maps.sock_map_rx);
                if (sotype == SOCK_DGRAM)
                        expected = split_len; /* FIONREAD for UDP is different from TCP */
                else
                        expected = sizeof(buf);
        } else {
                drop = test_sockmap_drop_prog__open_and_load();
                if (!ASSERT_OK_PTR(drop, "open_and_load"))
                        return;
                verdict = bpf_program__fd(drop->progs.prog_skb_verdict);
                map = bpf_map__fd(drop->maps.sock_map_rx);
                /* On drop data is consumed immediately and copied_seq inc'd */
                expected = 0;
        }


        err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;

        err = create_socket_pairs(AF_INET, sotype, &c0, &c1, &p0, &p1);
        if (!ASSERT_OK(err, "create_socket_pairs()"))
                goto out;

        err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
        if (!ASSERT_OK(err, "bpf_map_update_elem(c1)"))
                goto out_close;

        sent = xsend(p1, &buf, split_len, 0);
        sent += xsend(p1, &buf, sizeof(buf) - split_len, 0);
        ASSERT_EQ(sent, sizeof(buf), "xsend(p1)");
        err = ioctl(c1, FIONREAD, &avail);
        ASSERT_OK(err, "ioctl(FIONREAD) error");
        ASSERT_EQ(avail, expected, "ioctl(FIONREAD)");
        /* On DROP test there will be no data to read */
        if (pass_prog) {
                recvd = recv_timeout(c1, &buf, sizeof(buf), MSG_DONTWAIT, IO_TIMEOUT_SEC);
                ASSERT_EQ(recvd, sizeof(buf), "recv_timeout(c0)");
        }

out_close:
        close(c0);
        close(p0);
        close(c1);
        close(p1);
out:
        if (pass_prog)
                test_sockmap_pass_prog__destroy(pass);
        else
                test_sockmap_drop_prog__destroy(drop);
}

static void test_sockmap_skb_verdict_fionread(bool pass_prog)
{
        do_test_sockmap_skb_verdict_fionread(SOCK_STREAM, pass_prog);
        do_test_sockmap_skb_verdict_fionread(SOCK_DGRAM, pass_prog);
}

static void test_sockmap_skb_verdict_change_tail(void)
{
        struct test_sockmap_change_tail *skel;
        int err, map, verdict;
        int c1, p1, sent, recvd;
        int zero = 0;
        char buf[2];

        skel = test_sockmap_change_tail__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;
        verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
        map = bpf_map__fd(skel->maps.sock_map_rx);

        err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;
        err = create_pair(AF_INET, SOCK_STREAM, &c1, &p1);
        if (!ASSERT_OK(err, "create_pair()"))
                goto out;
        err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
        if (!ASSERT_OK(err, "bpf_map_update_elem(c1)"))
                goto out_close;
        sent = xsend(p1, "Tr", 2, 0);
        ASSERT_EQ(sent, 2, "xsend(p1)");
        recvd = recv(c1, buf, 2, 0);
        ASSERT_EQ(recvd, 1, "recv(c1)");
        ASSERT_EQ(skel->data->change_tail_ret, 0, "change_tail_ret");

        sent = xsend(p1, "G", 1, 0);
        ASSERT_EQ(sent, 1, "xsend(p1)");
        recvd = recv(c1, buf, 2, 0);
        ASSERT_EQ(recvd, 2, "recv(c1)");
        ASSERT_EQ(skel->data->change_tail_ret, 0, "change_tail_ret");

        sent = xsend(p1, "E", 1, 0);
        ASSERT_EQ(sent, 1, "xsend(p1)");
        recvd = recv(c1, buf, 1, 0);
        ASSERT_EQ(recvd, 1, "recv(c1)");
        ASSERT_EQ(skel->data->change_tail_ret, -EINVAL, "change_tail_ret");

out_close:
        close(c1);
        close(p1);
out:
        test_sockmap_change_tail__destroy(skel);
}

static void test_sockmap_skb_verdict_peek_helper(int map)
{
        int err, c1, p1, zero = 0, sent, recvd, avail;
        char snd[256] = "0123456789";
        char rcv[256] = "0";

        err = create_pair(AF_INET, SOCK_STREAM, &c1, &p1);
        if (!ASSERT_OK(err, "create_pair()"))
                return;

        err = bpf_map_update_elem(map, &zero, &c1, BPF_NOEXIST);
        if (!ASSERT_OK(err, "bpf_map_update_elem(c1)"))
                goto out_close;

        sent = xsend(p1, snd, sizeof(snd), 0);
        ASSERT_EQ(sent, sizeof(snd), "xsend(p1)");
        recvd = recv(c1, rcv, sizeof(rcv), MSG_PEEK);
        ASSERT_EQ(recvd, sizeof(rcv), "recv(c1)");
        err = ioctl(c1, FIONREAD, &avail);
        ASSERT_OK(err, "ioctl(FIONREAD) error");
        ASSERT_EQ(avail, sizeof(snd), "after peek ioctl(FIONREAD)");
        recvd = recv(c1, rcv, sizeof(rcv), 0);
        ASSERT_EQ(recvd, sizeof(rcv), "recv(p0)");
        err = ioctl(c1, FIONREAD, &avail);
        ASSERT_OK(err, "ioctl(FIONREAD) error");
        ASSERT_EQ(avail, 0, "after read ioctl(FIONREAD)");

out_close:
        close(c1);
        close(p1);
}

static void test_sockmap_skb_verdict_peek(void)
{
        struct test_sockmap_pass_prog *pass;
        int err, map, verdict;

        pass = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(pass, "open_and_load"))
                return;
        verdict = bpf_program__fd(pass->progs.prog_skb_verdict);
        map = bpf_map__fd(pass->maps.sock_map_rx);

        err = bpf_prog_attach(verdict, map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto out;

        test_sockmap_skb_verdict_peek_helper(map);

out:
        test_sockmap_pass_prog__destroy(pass);
}

static void test_sockmap_skb_verdict_peek_with_link(void)
{
        struct test_sockmap_pass_prog *pass;
        struct bpf_program *prog;
        struct bpf_link *link;
        int err, map;

        pass = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(pass, "open_and_load"))
                return;
        prog = pass->progs.prog_skb_verdict;
        map = bpf_map__fd(pass->maps.sock_map_rx);
        link = bpf_program__attach_sockmap(prog, map);
        if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
                goto out;

        err = bpf_link__update_program(link, pass->progs.prog_skb_verdict_clone);
        if (!ASSERT_OK(err, "bpf_link__update_program"))
                goto out;

        /* Fail since a prog with different attach type attempts to do update. */
        err = bpf_link__update_program(link, pass->progs.prog_skb_parser);
        if (!ASSERT_ERR(err, "bpf_link__update_program"))
                goto out;

        test_sockmap_skb_verdict_peek_helper(map);
        ASSERT_EQ(pass->bss->clone_called, 1, "clone_called");
out:
        bpf_link__destroy(link);
        test_sockmap_pass_prog__destroy(pass);
}

static void test_sockmap_unconnected_unix(void)
{
        int err, map, stream = -1, dgram = -1, zero = 0;
        struct test_sockmap_pass_prog *skel;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        map = bpf_map__fd(skel->maps.sock_map_rx);

        stream = xsocket(AF_UNIX, SOCK_STREAM, 0);
        if (stream < 0)
                goto out;

        dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
        if (dgram < 0)
                goto out;

        err = bpf_map_update_elem(map, &zero, &stream, BPF_ANY);
        if (!ASSERT_ERR(err, "bpf_map_update_elem(stream)"))
                goto out;

        err = bpf_map_update_elem(map, &zero, &dgram, BPF_ANY);
        ASSERT_OK(err, "bpf_map_update_elem(dgram)");
out:
        close(stream);
        close(dgram);
        test_sockmap_pass_prog__destroy(skel);
}

static void test_sockmap_many_socket(void)
{
        struct test_sockmap_pass_prog *skel;
        int stream[2], dgram, udp, tcp;
        int i, err, map, entry = 0;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        map = bpf_map__fd(skel->maps.sock_map_rx);

        dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
        if (dgram < 0) {
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        tcp = connected_socket_v4();
        if (!ASSERT_GE(tcp, 0, "connected_socket_v4")) {
                close(dgram);
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        udp = xsocket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
        if (udp < 0) {
                close(dgram);
                close(tcp);
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        err = socketpair(AF_UNIX, SOCK_STREAM, 0, stream);
        ASSERT_OK(err, "socketpair(af_unix, sock_stream)");
        if (err)
                goto out;

        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map, &entry, &stream[0], BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(stream)");
        }
        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map, &entry, &dgram, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(dgram)");
        }
        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map, &entry, &udp, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(udp)");
        }
        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map, &entry, &tcp, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(tcp)");
        }
        for (entry--; entry >= 0; entry--) {
                err = bpf_map_delete_elem(map, &entry);
                ASSERT_OK(err, "bpf_map_delete_elem(entry)");
        }

        close(stream[0]);
        close(stream[1]);
out:
        close(dgram);
        close(tcp);
        close(udp);
        test_sockmap_pass_prog__destroy(skel);
}

static void test_sockmap_many_maps(void)
{
        struct test_sockmap_pass_prog *skel;
        int stream[2], dgram, udp, tcp;
        int i, err, map[2], entry = 0;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        map[0] = bpf_map__fd(skel->maps.sock_map_rx);
        map[1] = bpf_map__fd(skel->maps.sock_map_tx);

        dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
        if (dgram < 0) {
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        tcp = connected_socket_v4();
        if (!ASSERT_GE(tcp, 0, "connected_socket_v4")) {
                close(dgram);
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        udp = xsocket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
        if (udp < 0) {
                close(dgram);
                close(tcp);
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        err = socketpair(AF_UNIX, SOCK_STREAM, 0, stream);
        ASSERT_OK(err, "socketpair(af_unix, sock_stream)");
        if (err)
                goto out;

        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map[i], &entry, &stream[0], BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(stream)");
        }
        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map[i], &entry, &dgram, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(dgram)");
        }
        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map[i], &entry, &udp, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(udp)");
        }
        for (i = 0; i < 2; i++, entry++) {
                err = bpf_map_update_elem(map[i], &entry, &tcp, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(tcp)");
        }
        for (entry--; entry >= 0; entry--) {
                err = bpf_map_delete_elem(map[1], &entry);
                entry--;
                ASSERT_OK(err, "bpf_map_delete_elem(entry)");
                err = bpf_map_delete_elem(map[0], &entry);
                ASSERT_OK(err, "bpf_map_delete_elem(entry)");
        }

        close(stream[0]);
        close(stream[1]);
out:
        close(dgram);
        close(tcp);
        close(udp);
        test_sockmap_pass_prog__destroy(skel);
}

static void test_sockmap_same_sock(void)
{
        struct test_sockmap_pass_prog *skel;
        int stream[2], dgram, udp, tcp;
        int i, err, map, zero = 0;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        map = bpf_map__fd(skel->maps.sock_map_rx);

        dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
        if (dgram < 0) {
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        tcp = connected_socket_v4();
        if (!ASSERT_GE(tcp, 0, "connected_socket_v4")) {
                close(dgram);
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        udp = xsocket(AF_INET, SOCK_DGRAM | SOCK_NONBLOCK, 0);
        if (udp < 0) {
                close(dgram);
                close(tcp);
                test_sockmap_pass_prog__destroy(skel);
                return;
        }

        err = socketpair(AF_UNIX, SOCK_STREAM, 0, stream);
        ASSERT_OK(err, "socketpair(af_unix, sock_stream)");
        if (err) {
                close(tcp);
                goto out;
        }

        for (i = 0; i < 2; i++) {
                err = bpf_map_update_elem(map, &zero, &stream[0], BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(stream)");
        }
        for (i = 0; i < 2; i++) {
                err = bpf_map_update_elem(map, &zero, &dgram, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(dgram)");
        }
        for (i = 0; i < 2; i++) {
                err = bpf_map_update_elem(map, &zero, &udp, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(udp)");
        }
        for (i = 0; i < 2; i++) {
                err = bpf_map_update_elem(map, &zero, &tcp, BPF_ANY);
                ASSERT_OK(err, "bpf_map_update_elem(tcp)");
        }

        close(tcp);
        err = bpf_map_delete_elem(map, &zero);
        ASSERT_ERR(err, "bpf_map_delete_elem(entry)");

        close(stream[0]);
        close(stream[1]);
out:
        close(dgram);
        close(udp);
        test_sockmap_pass_prog__destroy(skel);
}

static void test_sockmap_skb_verdict_vsock_poll(void)
{
        struct test_sockmap_pass_prog *skel;
        int err, map, conn, peer;
        struct bpf_program *prog;
        struct bpf_link *link;
        char buf = 'x';
        int zero = 0;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        if (create_pair(AF_VSOCK, SOCK_STREAM, &conn, &peer))
                goto destroy;

        prog = skel->progs.prog_skb_verdict;
        map = bpf_map__fd(skel->maps.sock_map_rx);
        link = bpf_program__attach_sockmap(prog, map);
        if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))
                goto close;

        err = bpf_map_update_elem(map, &zero, &conn, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem"))
                goto detach;

        if (xsend(peer, &buf, 1, 0) != 1)
                goto detach;

        err = poll_read(conn, IO_TIMEOUT_SEC);
        if (!ASSERT_OK(err, "poll"))
                goto detach;

        if (xrecv_nonblock(conn, &buf, 1, 0) != 1)
                FAIL("xrecv_nonblock");
detach:
        bpf_link__destroy(link);
close:
        xclose(conn);
        xclose(peer);
destroy:
        test_sockmap_pass_prog__destroy(skel);
}

static void test_sockmap_vsock_unconnected(void)
{
        struct sockaddr_storage addr;
        int map, s, zero = 0;
        socklen_t alen;

        map = bpf_map_create(BPF_MAP_TYPE_SOCKMAP, NULL, sizeof(int),
                             sizeof(int), 1, NULL);
        if (!ASSERT_OK_FD(map, "bpf_map_create"))
                return;

        s = xsocket(AF_VSOCK, SOCK_STREAM, 0);
        if (s < 0)
                goto close_map;

        /* Fail connect(), but trigger transport assignment. */
        init_addr_loopback(AF_VSOCK, &addr, &alen);
        if (!ASSERT_ERR(connect(s, sockaddr(&addr), alen), "connect"))
                goto close_sock;

        ASSERT_ERR(bpf_map_update_elem(map, &zero, &s, BPF_ANY), "map_update");

close_sock:
        xclose(s);
close_map:
        xclose(map);
}

/* it is used to reproduce WARNING */
static void test_sockmap_zc(void)
{
        int map, err, sent, recvd, zero = 0, one = 1, on = 1;
        char buf[10] = "0123456789", rcv[11], addr[100];
        struct test_sockmap_pass_prog *skel = NULL;
        int c0 = -1, p0 = -1, c1 = -1, p1 = -1;
        struct tcp_zerocopy_receive zc;
        socklen_t zc_len = sizeof(zc);
        struct bpf_program *prog;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        if (create_socket_pairs(AF_INET, SOCK_STREAM, &c0, &c1, &p0, &p1))
                goto end;

        prog = skel->progs.prog_skb_verdict_ingress;
        map = bpf_map__fd(skel->maps.sock_map_rx);

        err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach"))
                goto end;

        err = bpf_map_update_elem(map, &zero, &p0, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem"))
                goto end;

        err = bpf_map_update_elem(map, &one, &p1, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem"))
                goto end;

        sent = xsend(c0, buf, sizeof(buf), 0);
        if (!ASSERT_EQ(sent, sizeof(buf), "xsend"))
                goto end;

        /* trigger tcp_bpf_recvmsg_parser and inc copied_seq of p1 */
        recvd = recv_timeout(p1, rcv, sizeof(rcv), MSG_DONTWAIT, 1);
        if (!ASSERT_EQ(recvd, sent, "recv_timeout(p1)"))
                goto end;

        /* uninstall sockmap of p1 */
        bpf_map_delete_elem(map, &one);

        /* trigger tcp stack and the rcv_nxt of p1 is less than copied_seq */
        sent = xsend(c1, buf, sizeof(buf) - 1, 0);
        if (!ASSERT_EQ(sent, sizeof(buf) - 1, "xsend"))
                goto end;

        err = setsockopt(p1, SOL_SOCKET, SO_ZEROCOPY, &on, sizeof(on));
        if (!ASSERT_OK(err, "setsockopt"))
                goto end;

        memset(&zc, 0, sizeof(zc));
        zc.copybuf_address = (__u64)((unsigned long)addr);
        zc.copybuf_len = sizeof(addr);

        err = getsockopt(p1, IPPROTO_TCP, TCP_ZEROCOPY_RECEIVE, &zc, &zc_len);
        if (!ASSERT_OK(err, "getsockopt"))
                goto end;

end:
        if (c0 >= 0)
                close(c0);
        if (p0 >= 0)
                close(p0);
        if (c1 >= 0)
                close(c1);
        if (p1 >= 0)
                close(p1);
        test_sockmap_pass_prog__destroy(skel);
}

/* it is used to check whether copied_seq of sk is correct */
static void test_sockmap_copied_seq(bool strp)
{
        int i, map, err, sent, recvd, zero = 0, one = 1;
        struct test_sockmap_pass_prog *skel = NULL;
        int c0 = -1, p0 = -1, c1 = -1, p1 = -1;
        char buf[10] = "0123456789", rcv[11];
        struct bpf_program *prog;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        if (create_socket_pairs(AF_INET, SOCK_STREAM, &c0, &c1, &p0, &p1))
                goto end;

        prog = skel->progs.prog_skb_verdict_ingress;
        map = bpf_map__fd(skel->maps.sock_map_rx);

        err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach verdict"))
                goto end;

        if (strp) {
                prog = skel->progs.prog_skb_verdict_ingress_strp;
                err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_PARSER, 0);
                if (!ASSERT_OK(err, "bpf_prog_attach parser"))
                        goto end;
        }

        err = bpf_map_update_elem(map, &zero, &p0, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem(p0)"))
                goto end;

        err = bpf_map_update_elem(map, &one, &p1, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem(p1)"))
                goto end;

        /* just trigger sockamp: data sent by c0 will be received by p1 */
        sent = xsend(c0, buf, sizeof(buf), 0);
        if (!ASSERT_EQ(sent, sizeof(buf), "xsend(c0), bpf"))
                goto end;

        /* do partial read */
        recvd = recv_timeout(p1, rcv, 1, MSG_DONTWAIT, 1);
        recvd += recv_timeout(p1, rcv + 1, sizeof(rcv) - 1, MSG_DONTWAIT, 1);
        if (!ASSERT_EQ(recvd, sent, "recv_timeout(p1), bpf") ||
            !ASSERT_OK(memcmp(buf, rcv, recvd), "data mismatch"))
                goto end;

        /* uninstall sockmap of p1 and p0 */
        err = bpf_map_delete_elem(map, &one);
        if (!ASSERT_OK(err, "bpf_map_delete_elem(1)"))
                goto end;

        err = bpf_map_delete_elem(map, &zero);
        if (!ASSERT_OK(err, "bpf_map_delete_elem(0)"))
                goto end;

        /* now all sockets become plain socket, they should still work */
        for (i = 0; i < 5; i++) {
                /* test copied_seq of p1 by running tcp native stack */
                sent = xsend(c1, buf, sizeof(buf), 0);
                if (!ASSERT_EQ(sent, sizeof(buf), "xsend(c1), native"))
                        goto end;

                recvd = recv(p1, rcv, sizeof(rcv), MSG_DONTWAIT);
                if (!ASSERT_EQ(recvd, sent, "recv_timeout(p1), native"))
                        goto end;

                /* p0 previously redirected skb to p1, we also check copied_seq of p0 */
                sent = xsend(c0, buf, sizeof(buf), 0);
                if (!ASSERT_EQ(sent, sizeof(buf), "xsend(c0), native"))
                        goto end;

                recvd = recv(p0, rcv, sizeof(rcv), MSG_DONTWAIT);
                if (!ASSERT_EQ(recvd, sent, "recv_timeout(p0), native"))
                        goto end;
        }

end:
        if (c0 >= 0)
                close(c0);
        if (p0 >= 0)
                close(p0);
        if (c1 >= 0)
                close(c1);
        if (p1 >= 0)
                close(p1);
        test_sockmap_pass_prog__destroy(skel);
}

/* Wait until FIONREAD returns the expected value or timeout */
static int wait_for_fionread(int fd, int expected, unsigned int timeout_ms)
{
        unsigned int elapsed = 0;
        int avail = 0;

        while (elapsed < timeout_ms) {
                if (ioctl(fd, FIONREAD, &avail) < 0)
                        return -errno;
                if (avail >= expected)
                        return avail;
                usleep(1000);
                elapsed++;
        }
        return avail;
}

/* it is used to send data to via native stack and BPF redirecting */
static void test_sockmap_multi_channels(int sotype)
{
        int map, err, sent, recvd, zero = 0, one = 1, avail = 0, expected;
        struct test_sockmap_pass_prog *skel = NULL;
        int c0 = -1, p0 = -1, c1 = -1, p1 = -1;
        char buf[10] = "0123456789", rcv[11];
        struct bpf_program *prog;

        skel = test_sockmap_pass_prog__open_and_load();
        if (!ASSERT_OK_PTR(skel, "open_and_load"))
                return;

        err = create_socket_pairs(AF_INET, sotype, &c0, &c1, &p0, &p1);
        if (err)
                goto end;

        prog = skel->progs.prog_skb_verdict_ingress;
        map = bpf_map__fd(skel->maps.sock_map_rx);

        err = bpf_prog_attach(bpf_program__fd(prog), map, BPF_SK_SKB_STREAM_VERDICT, 0);
        if (!ASSERT_OK(err, "bpf_prog_attach verdict"))
                goto end;

        err = bpf_map_update_elem(map, &zero, &p0, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem(p0)"))
                goto end;

        err = bpf_map_update_elem(map, &one, &p1, BPF_ANY);
        if (!ASSERT_OK(err, "bpf_map_update_elem"))
                goto end;

        /* send data to p1 via native stack */
        sent = xsend(c1, buf, 2, 0);
        if (!ASSERT_EQ(sent, 2, "xsend(2)"))
                goto end;

        avail = wait_for_fionread(p1, 2, IO_TIMEOUT_SEC);
        ASSERT_EQ(avail, 2, "ioctl(FIONREAD) partial return");

        /* send data to p1 via bpf redirecting */
        sent = xsend(c0, buf + 2, sizeof(buf) - 2, 0);
        if (!ASSERT_EQ(sent, sizeof(buf) - 2, "xsend(remain-data)"))
                goto end;

        /* Poll FIONREAD until expected bytes arrive, poll_read() is unreliable
         * here since it may return immediately if prior data is already queued.
         */
        expected = sotype == SOCK_DGRAM ? 2 : sizeof(buf);
        avail = wait_for_fionread(p1, expected, IO_TIMEOUT_SEC);
        ASSERT_EQ(avail, expected, "ioctl(FIONREAD) full return");

        recvd = recv_timeout(p1, rcv, sizeof(rcv), MSG_DONTWAIT, 1);
        if (!ASSERT_EQ(recvd, sizeof(buf), "recv_timeout(p1)") ||
            !ASSERT_OK(memcmp(buf, rcv, recvd), "data mismatch"))
                goto end;
end:
        if (c0 >= 0)
                close(c0);
        if (p0 >= 0)
                close(p0);
        if (c1 >= 0)
                close(c1);
        if (p1 >= 0)
                close(p1);
        test_sockmap_pass_prog__destroy(skel);
}

void test_sockmap_basic(void)
{
        if (test__start_subtest("sockmap create_update_free"))
                test_sockmap_create_update_free(BPF_MAP_TYPE_SOCKMAP);
        if (test__start_subtest("sockhash create_update_free"))
                test_sockmap_create_update_free(BPF_MAP_TYPE_SOCKHASH);
        if (test__start_subtest("sockmap vsock delete on close"))
                test_sockmap_vsock_delete_on_close();
        if (test__start_subtest("sockmap sk_msg load helpers"))
                test_skmsg_helpers(BPF_MAP_TYPE_SOCKMAP);
        if (test__start_subtest("sockhash sk_msg load helpers"))
                test_skmsg_helpers(BPF_MAP_TYPE_SOCKHASH);
        if (test__start_subtest("sockmap update"))
                test_sockmap_update(BPF_MAP_TYPE_SOCKMAP);
        if (test__start_subtest("sockhash update"))
                test_sockmap_update(BPF_MAP_TYPE_SOCKHASH);
        if (test__start_subtest("sockmap update in unsafe context"))
                test_sockmap_invalid_update();
        if (test__start_subtest("sockmap copy"))
                test_sockmap_copy(BPF_MAP_TYPE_SOCKMAP);
        if (test__start_subtest("sockhash copy"))
                test_sockmap_copy(BPF_MAP_TYPE_SOCKHASH);
        if (test__start_subtest("sockmap skb_verdict attach")) {
                test_sockmap_skb_verdict_attach(BPF_SK_SKB_VERDICT,
                                                BPF_SK_SKB_STREAM_VERDICT);
                test_sockmap_skb_verdict_attach(BPF_SK_SKB_STREAM_VERDICT,
                                                BPF_SK_SKB_VERDICT);
        }
        if (test__start_subtest("sockmap skb_verdict attach_with_link"))
                test_sockmap_skb_verdict_attach_with_link();
        if (test__start_subtest("sockmap msg_verdict progs query"))
                test_sockmap_progs_query(BPF_SK_MSG_VERDICT);
        if (test__start_subtest("sockmap stream_parser progs query"))
                test_sockmap_progs_query(BPF_SK_SKB_STREAM_PARSER);
        if (test__start_subtest("sockmap stream_verdict progs query"))
                test_sockmap_progs_query(BPF_SK_SKB_STREAM_VERDICT);
        if (test__start_subtest("sockmap skb_verdict progs query"))
                test_sockmap_progs_query(BPF_SK_SKB_VERDICT);
        if (test__start_subtest("sockmap skb_verdict shutdown"))
                test_sockmap_skb_verdict_shutdown();
        if (test__start_subtest("sockmap skb_verdict fionread"))
                test_sockmap_skb_verdict_fionread(true);
        if (test__start_subtest("sockmap skb_verdict fionread on drop"))
                test_sockmap_skb_verdict_fionread(false);
        if (test__start_subtest("sockmap skb_verdict change tail"))
                test_sockmap_skb_verdict_change_tail();
        if (test__start_subtest("sockmap skb_verdict msg_f_peek"))
                test_sockmap_skb_verdict_peek();
        if (test__start_subtest("sockmap skb_verdict msg_f_peek with link"))
                test_sockmap_skb_verdict_peek_with_link();
        if (test__start_subtest("sockmap unconnected af_unix"))
                test_sockmap_unconnected_unix();
        if (test__start_subtest("sockmap one socket to many map entries"))
                test_sockmap_many_socket();
        if (test__start_subtest("sockmap one socket to many maps"))
                test_sockmap_many_maps();
        if (test__start_subtest("sockmap same socket replace"))
                test_sockmap_same_sock();
        if (test__start_subtest("sockmap sk_msg attach sockmap helpers with link"))
                test_skmsg_helpers_with_link(BPF_MAP_TYPE_SOCKMAP);
        if (test__start_subtest("sockhash sk_msg attach sockhash helpers with link"))
                test_skmsg_helpers_with_link(BPF_MAP_TYPE_SOCKHASH);
        if (test__start_subtest("sockmap skb_verdict vsock poll"))
                test_sockmap_skb_verdict_vsock_poll();
        if (test__start_subtest("sockmap vsock unconnected"))
                test_sockmap_vsock_unconnected();
        if (test__start_subtest("sockmap with zc"))
                test_sockmap_zc();
        if (test__start_subtest("sockmap recover"))
                test_sockmap_copied_seq(false);
        if (test__start_subtest("sockmap recover with strp"))
                test_sockmap_copied_seq(true);
        if (test__start_subtest("sockmap tcp multi channels"))
                test_sockmap_multi_channels(SOCK_STREAM);
        if (test__start_subtest("sockmap udp multi channels"))
                test_sockmap_multi_channels(SOCK_DGRAM);
}