// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2020 Cloudflare
#include <error.h>
#include <netinet/tcp.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 "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 */
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_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__detach(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__detach(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__detach(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__detach(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, SOCK_NONBLOCK);
ASSERT_EQ(n, 0, "recv_timeout(fin)");
out_close:
close(c1);
close(p1);
out:
test_sockmap_pass_prog__destroy(skel);
}
static void test_sockmap_skb_verdict_fionread(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";
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);
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, SOCK_STREAM, &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, sizeof(buf), 0);
ASSERT_EQ(sent, sizeof(buf), "xsend(p0)");
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), SOCK_NONBLOCK, 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_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__detach(link);
test_sockmap_pass_prog__destroy(pass);
}
static void test_sockmap_unconnected_unix(void)
{
int err, map, stream = 0, dgram = 0, 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)
return;
dgram = xsocket(AF_UNIX, SOCK_DGRAM, 0);
if (dgram < 0) {
close(stream);
return;
}
err = bpf_map_update_elem(map, &zero, &stream, BPF_ANY);
ASSERT_ERR(err, "bpf_map_update_elem(stream)");
err = bpf_map_update_elem(map, &zero, &dgram, BPF_ANY);
ASSERT_OK(err, "bpf_map_update_elem(dgram)");
close(stream);
close(dgram);
}
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)
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)");
}
err = bpf_map_delete_elem(map, &zero);
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);
}
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 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 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);
}
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